Nonwoven tape for filling seams, having property of low swelling when moistened, and method of its application

FIELD: construction.

SUBSTANCE: tape is designed to fill seams between construction slabs. It contains a non-woven base, containing fibres, selected from a group made of natural cellulose fibres, synthetic polymer fibres, glass fibres and their combinations. At the same time the nonwoven base has the following properties, determined according to ASTM C474-05: relative swelling in cross direction is below approximately 1.3%; relative swelling in longitudinal direction is below approximately 0.2% and breaking strength in cross direction is at least approximately 2625 N/m. Besides, a method is proposed for finishing treatment of a seam between slabs, including the following: (1) application of a tape for filling seams onto a seam between slabs by submersion of a tape for seam filling into the first layer of the composition for filling seams; (ii) application of the second layer of the composition for filling seams above the tape, besides, the stage (ii) is carried out before the tape for seam filling and the composition for seam filling applied at the stage (i), have dried substantially, and if required, (iii) application of the third, filling or final layer of the composition for filling seams above the tape, besides, the stage (iii) is carried out before the tape for seam filling and the second layer have substantially dried.

EFFECT: improved quality of the tape due to high strength and reduction of swelling during moistening at simultaneous acceleration of seams filling.

20 cl, 2 tbl, 1 ex

 

The technical FIELD

Walls, ceilings, floors, partitions, highlight baths, etc. usually constructed integral part of the plate (sometimes referred to as “panel”). The plate may consist of any of a variety of materials, including but not limited to, mineral binders, such as cement or gypsum. Usually when using two plate parts adjacent to each other, between the plates define a gap or joint, which is called the seam. It is well known that these seams are filled and revet with the use of specially prepared binders called “composition for sealing seams. Professionals in this field are known two types of composition for sealing seams: composition for sealing joints seizing the type and composition for sealing seams drying type, which is available in the form of ready-to-use mixture. This method is also used to remove defects, such as uneven surfaces, holes, grooves, cracks, dents and other defects, including defects around electrical boxes, pipes and channels, and angles formed by the intersection of the plates of the walls of dry masonry.

Specialists in this field is well known that the finishing of the weld between plates with application tape for sealing joints usually includes three stages. First on the plate surface is weld a thin layer of the composition for sealing seams and immerse him in the tape. This stage is usually referred to as the stage dive. Then on top of submerged tape for sealing seams put the second layer of the composition for sealing seams. This stage is usually referred to as the stage of filling. The second layer of the composition for sealing seams usually goes approximately 5.08 cm (2 inches) beyond the edges of the tape for sealing joints. Finally, the third layer of the composition for the grout is applied over the first two layers and the third layer usually extends even further beyond the edges of the tape for sealing joints. This stage is usually called the final stage. Since paper tape for sealing joints swells in the presence of moisture from the composition for sealing seams, second and third layers of the composition for sealing seams cannot be applied up until the previous layer composition for sealing seams and tape for sealing joints are completely dry, which often takes up to 24 hours, This means that for finishing the seam between the plates is required for up to three days. When the tape is an adhesive tape requires only stage (ii) and (iii), and therefore, for finishing the seam you up to two full days.

Tape for sealing seams improves durability and crack resistance, and also smooths the defects on the flat seams and inside corners. Traditionally use three types of tape for sealing joints: a simple strip of Kraft paper; tape of woven Steklovolokno the a and the tape of nonwoven fiberglass. Strips of Kraft paper and the tape of nonwoven glass fiber is glued to the plate surfaces, such as dry wall masonry, by applying a layer of the composition for sealing seams, or they are self-adhesive. The tape is woven from fiberglass is usually a tape self-adhesive type, but it can also be attached to the wall brackets. After applying paper tape for sealing joints need to wait up to a day to fully dry composition for sealing seams and tape before applying the next layer of the composition for sealing seams.

The glass tape does not swell and resists stretching and wrinkling. However, strips of non-woven glass fiber have low tensile strength and are prone to cracking when used with traditional compositions for sealing seams. The tape is woven from fiberglass possess sufficient tensile strength, but the seams between the plates obtained with the use of the composition for sealing seams drying type, prone to cracking, and thus, the tape is woven from fiberglass recommended only for use with the compositions for the grout setting type.

Therefore, in this area there is a need for improved tape for sealing seams, which has high strength and low swelling when wet. In addition, when there is a need for an improved method of finishing joints between the parts of the plate, which reduces or eliminates the need to wait for the drying of the composition for sealing seams. This invention provides such a tape for sealing joints and such a way. These and other advantages of the present invention, and further features of the invention will be understood from the present description.

BRIEF description of the INVENTION

In the proposed invention the tape for sealing joints for finishing the seam between the plates (such as, for example, dry wall masonry, cement slab, etc.), including non-woven base, which essentially does not swell in the presence of water and which has sufficient strength to resist tearing and cracking during application. In one of the embodiments of the present invention the tape for sealing joints includes a non-woven base, including fibers selected from the group consisting of natural cellulosic fibers, synthetic polymer fibers, glass fibers and combinations thereof, and non-woven backing preferably has the following characteristics defined in accordance with ASTM C-05:

the relative swelling in the transverse direction of less than about 1.3%;

the relative swelling in the longitudinal direction of less than about 0.2% and

the tensile strength in the transverse direction of at least approx the positive 2625 N/m (15 pounds-force per inch).

In addition, the invention proposed a method of finishing a seam between the plates, including the use of tape for sealing joints according to this invention. Applicants unexpectedly found that the application of tape for sealing joints in this invention can significantly reduce the time required for finishing the seam. In particular, the second layer composition for sealing seams can be applied over the first layer, without waiting for drying of the first layer or tape to seal joints. Therefore, in another embodiment, the invention is a method including (i) the application of tape for sealing seams on this invention on the seam between the plates by immersing the tape in the first layer composition for sealing seams, (ii) the drawing of the second filling layer composition for sealing seams on top of the tape and, if required, (iii) applying a third filling or final layer of the composition for sealing seams on top of the tape, and stage (ii) and/or (iii) being carried out before the previous layer and/or tape for sealing joints essentially dried or hardened.

DETAILED description of the INVENTION

The invention relates to a tape for sealing joints, finishing of joints between the plates and reinforcement for mineral binders in General. Used here, the expression "finishing seam" refers to N. the keeping tape and composition for sealing seams on the seam between the plates to create a modular design of the plates, after finishing processing can be further processed, for example, applying paint, Wallpaper, tiles, panelling etc. Tape for sealing joints according to this invention can be used with a stove used to create walls, ceilings, floors, walls, edges baths, walls vertical and horizontal shafts, stair wells, separation walls, etc. for Example, tape for sealing joints according to this invention can be used with such products as dry wall masonry SHEETROCK® and cement wall DUROCK®, sold by United States Gypsum Company, as well as with competing products and similar products. The plate may consist of any of a variety of materials, including but not limited to, mineral binders, such as cement or gypsum. The term “dry wall masonry” is used as illustrations, but as is clear to any average person skilled in the art, it includes many products such as wall plate, wood, glass-fronted gypsum boards, cement slab, etc. the Term "strip" means a strip of material, which may be supplied, for example, in the form of a roll, which may contain or not contain adhesive back layer and which preferably conforms to the standards set forth in ASTM C-05 and C.

The invention is directed to l the NTU for the grout, including the base, including fiber, which essentially does not swell in the presence of moisture. In this regard, the present invention is based at least in part on the unexpected and unpredictable discovered by the authors of the present invention the tape for sealing joints, including the basis for which the relative swelling in the transverse direction is less than about 1.3%, and the relative swelling in the longitudinal direction is less than about 0.2%; these values are determined according to ASTM C-05. For example, in some embodiments of the present invention relative swelling of the base in the transverse direction is less than about 1%, and the relative swelling of the base in the longitudinal direction is less than about 0.15%. Preferably, the relative swelling of the base in the transverse direction is less than about 0.8%, and the relative swelling of the base in the longitudinal direction is less than about 0.1%. In some embodiments of the present invention relative swelling of the base in the transverse direction is less than about 1.3%, and the relative swelling of the base in the longitudinal direction is less than about 0.15%; the relative swelling in the transverse direction is less than about 1.3%, and consider what inoe swelling in the longitudinal direction is less than about 0.1%; the relative swelling in the transverse direction is less than about 1%, and the relative swelling in the longitudinal direction is less than about 0.2%; the relative swelling in the transverse direction is less than about 1%, and the relative swelling in the longitudinal direction is less than about 0.1%; the relative swelling in the transverse direction is less than about 0.8%, and the relative swelling in the longitudinal direction is less than about 0.2% or relative swelling in the transverse direction is less than about 1%, and the relative swelling in the longitudinal direction is less than about 0.15%.

Also preferably, the tape jointing possessed sufficient strength to avoid rupture during application on the seam of drywall. Therefore, the tape for sealing joints according to this invention preferably includes a base, for which the tensile strength in the transverse direction determined according to ASTM C-05, is at least approximately 2625 N/m (15 pounds-force per inch). In some embodiments of the present invention, the base has a tensile strength in the transverse direction, which is at least approximately 3150 N/m (18 lb-force is and inch). Preferably, the base has a tensile strength in the transverse direction, which is at least about 3500 N/m (20 lb-force per inch).

The Foundation is a non-woven base. Used here, the term “non-woven backing” refers to the canvas, having a structure of individual fibers or threads which are replaced, but not in a specific way, as in a knitted cloth. Woven canvas or canvases prepared in many ways, such as, for example, ways of blowing of the melt bond spinning (spunbonding processes and ways of getting glued cartooning canvas. Non-woven backing may be of any suitable pore size that provides sufficient permeability tape composition for sealing seams, thereby improving the adhesion of a composition for sealing seams (i.e., the adhesion to the composition for sealing seams, qualified according to ASTM C-05, is at least approximately 90%) between the tape and the wall of dry masonry, on which it is applied. Preferably, the permeability of the nonwoven basis for the fluid, as measured by air permeability according to the method TAPPI T-460 (method gerli (Gurley)), is approximately 6 seconds or less (for example, approximately 5 seconds or less, or approximately 4 seconds or less). The upper limit of the permeability of nonwoven basis is limited neo is the requirement of sufficient tensile strength, what was discussed above.

Non-woven backing may be composed of any suitable fiber. For example, non-woven backing may include fibers selected from the group consisting of natural cellulosic fibers, synthetic polymer fibers, glass fibers and combinations thereof. Natural fibers may include fibers of wood pulp, including fiber coniferous and deciduous wood pulp, fibers, straw, cellulose fibers from plants and herbs such as cellulose fibers from hemp, jute, kenaf and bamboo fiber cotton cellulose, etc. In some embodiments of the present invention natural cellulose fibers are fibers of wood pulp, such as fiber used in the manufacture of paper. Synthetic polymer fibers can include fibers comprising polymers selected from the group consisting of a complex of the polyester, polyethylene, polypropylene, nylon, polyacetate, polyacrylic acid, polystyrene, polyvinyl acetate, viscose, polyvinyl chloride, copolymers and combinations thereof. In some embodiments of the present invention the synthetic polymer fibers include complex polyester, polyethylene, polypropylene or combinations thereof.

The fibers used to produce nonwoven basis used in the tape for sealing joints according to this invention is chosen so that th is would they meet the requirements on the relative swelling and tensile strength, described above. Typically, non-woven backing includes a high percentage of synthetic polymer fibers, preferably, a complex of polyester fibers. In addition, non-woven backing may include natural cellulose fibers, preferably fibers of wood pulp, and/or fiberglass. In one of the embodiments of the present invention the non-woven base includes a synthetic polymer fibers, the fibers of wood pulp and fiber. In some embodiments of the present invention the non-woven base includes at least about 30 wt.%. or more synthetic polymeric fibers, less than about 1% wt. natural cellulose fibers and/or less than about 50% wt. optical fibers, and the content given in the calculation of the total weight of the nonwoven base.

If required, non-woven backing used in the tape for sealing joints in this invention, further includes a binder. The binder is usually added during formation of the nonwoven basis to facilitate the adhesion of the fibers and to increase the strength of the resulting framework. The binder can be any suitable binder, many of which are known to specialists in this field. The binder may be a polymer binder, for example, polymer clay is, derived from vinyl acetate, vinyl alcohol, vinyl chloride, acrylic acid, a copolymer of ethylene and vinyl acetate and a copolymer of ethylene and vinyl chloride, starch and combinations thereof.

The binder may also be a starch or a derivative of starch. Suitable starches include starches from corn, waxy maize, sorghum, white sorghum, wheat, potato and tapioca starches. Suitable starch derivatives include hydroxyethyloxy ether of starch, starch acetate, starch phosphate, starch maleate, propionamide starch, cationic starch, oxidized starch and cyanoethylidene starch and, in particular, gidroksietilirovanny potato starch, cationic potato starch, modified acid, corn starch, gidroksietilirovanny corn starch, oxidized corn starch, and mixtures thereof. Also included cross-linked starches and products of saccharification of starch, such as dextrins (e.g., white dextrins, light yellow and yellow dextrins dextrins, maltodextrins, thermal-chemically treated starches and oxidized starches.

The binder is preferably selected from the group consisting of polyvinyl alcohol, polyvinyl acetate, copolymer of ethylene and vinyl acetate, polyvinyl chloride, cross-linked starch and combinations thereof. In some embodiments of danagoulian binder is preferably a cross-linked starch. In other embodiments of the present invention the binder is preferably a polyvinyl alcohol and/or polyvinyl acetate. In other embodiments of this invention, the binder preferably is a mixture of cross-linked starch and polyvinyl alcohol and/or polyvinyl acetate.

If required, non-woven base used in the tape for sealing joints according to this invention, at least partially covered with a substance that enhances grip. A substance that enhances the grip, is any substance that increases the adhesion between the tape for sealing joints and jointing, after the tape is applied to the wall, and the subsequent adherence of the tape, impregnated with the composition for sealing seams, to the surface of the plate (for example, the walls of dry masonry). For example, a substance that enhances the grip, you can choose from the group consisting of polymers derived from vinyl acetate, vinyl alcohol, vinyl chloride, acrylic acid, copolymer of ethylene and vinyl acetate and a copolymer of ethylene and vinyl chloride, starch and combinations thereof.

Preferably, a substance that enhances the grip, which are selected from the group consisting of polyvinyl acetate, polyvinyl alcohol and combinations thereof.

In some embodiments of the present invention the non-woven base used in the tape for sealing the Bob on this invention, if required, includes an adhesive material at least on the back side of the nonwoven base. The adhesive material can be used instead of substances that increase grip, or in addition to it. Typically, the adhesive material is a pressure-sensitive adhesive, many of which are known to specialists in this field. Used here, the expression “pressure-sensitive” refers to any releasable glue or releasable adhesive means. Suitable adhesives include acrylic adhesives, for example, a copolymer of itachinaruto and acrylic acid or a copolymer of vinyl acetate and 2-ethylhexyl acrylate, which can be used in combination with substances that increase the adhesiveness. Alternatively, the adhesive may include bystrootverdevayuschey thermoplastic “hot melt” adhesives.

In other embodiments of this invention it is preferable that the nonwoven base was lightly sanded before application. A light sanding of the surface to improve the adhesion of the tape with the composition for sealing seams during application and subsequent adhesion to the surface of drywall. Grinding can be applied separately or in combination with a substance that enhances traction, and/or adhesive material.

Tape for sealing joints according to this invention can have any suitable thickness. According to ASTM C-05 thickness tapes for sealing seams, suitable for use in industry, should be approximately 0.3 mm (0,012 inch) or less. In some embodiments of the present invention, the thickness of the tape for sealing joints according to this invention is about 0.25 mm (0.01 inch) or less, or about 0.2 mm (0.008 inches) or less. Preferably, the thickness of the tape for sealing joints according to this invention is approximately 0.18 mm (0.007 inch) or less, about 0.15 mm (0.006 in) or less, about 0.13 mm (0.005 inch) or less, or about 0.1 mm (0.004 in) or less.

In any of the embodiments of the present invention the tape for sealing seams may optionally include any suitable additives, such as dyes or pigments, fire retardants and labels, many of which are known to specialists in this field. In addition, tape for sealing joints can be pre-bent or marked in the middle, in order to facilitate the application of internal corners.

Tape for sealing joints according to this invention is preferably used for finishing joints between the slabs. One of the advantages of tape for sealing joints according to this invention is that the non-woven backing that has a low relative swelling in the presence of moisture. This property is particularly preferred in which texte finishing joints between the plates, because when applying tape for sealing joints in this invention is not required to wait until such time as the composition for sealing seams and tape to dry before applying another layer of the composition for sealing seams.

Therefore, the tape for sealing joints in accordance with any embodiment of the present invention is preferably used in the method of finishing a seam of drywall. In one of the embodiments of the present invention, this method comprises (i) immersing the tape for sealing joints in the first layer composition for sealing seams above the seam between the plates, (ii) the drawing of the second filling layer composition for sealing seams on tape for sealing joints and, if required, (iii) applying a third filling or final layer of the composition for sealing seams on top of the tape, and stage (ii) and/or (iii) being carried out before the previous layer has essentially dried up. If required, this method further includes (iv) applying a fourth filling or final layer of the composition for sealing seams on top of the tape and, if required, (v) the application of the fifth, the final layer of the composition for sealing seams on top of the tape, and stage (iv) and (v) carry out before the previous layer has essentially dried up. Used here, the term “immersion” means the placement or location of the tape at least partially on the composition for sealing seams or him. The tape groundwork and joints can be fully or partially immersed in the composition for sealing seams.

In another embodiment of the present invention, this method comprises (i) applying tape to seal joints in accordance with any of the embodiments of the present invention on the seam between the plates using an adhesive material, such as a pressure-sensitive adhesive, (ii) applying the first filling layer composition for sealing seams on tape for sealing joints and, if required, (iii) applying a second filling or final layer of the composition for sealing seams on top of the tape, and stage (iii) is carried out before the first layer has essentially dried up. If required, this method further includes applying a third, fourth or even fifth filling or final layer of the composition for sealing seams on top of the tape, with each additional layer is applied before the previously applied layer has essentially dried up.

Used here, the expression “essentially dry” refers to the moment when the water present in the composition for sealing seams, which was deposited on top of the paper tape for sealing joints, evaporated sufficiently so that any swelling tape, which occurred due to the presence of moisture, essentially or completely eliminated. In the method according to this invention subsequent layer composition for sealing seams can be applied before all the water present in the composition for the grout has been removed, n is the sample, by evaporation. Usually the second or subsequent layers of the composition for sealing seams can be applied immediately, for example, for about 30 minutes, within about 1 hour, or within about 3 o'clock

The following examples additionally illustrate the invention, but, of course, they should not be construed as in any way limiting its scope.

EXAMPLE

This example illustrates that kinabuhayan tape for sealing joints according to this invention have a tensile strength and adhesion to the composition for sealing seams, which is comparable to traditional paper tapes for sealing seams.

Non-woven material comprising a mixture of fibers of a complex polyester, fiberglass and wood pulp fibers (Ahlstrom 7136), cut two strips the length of 91.44 cm (3 ft) to simulate sizes standard paper tape for sealing joints. One of the strips slightly polished on one side using sandpaper grit 120. The thickness of the unpolished non-woven strips was 242±7 µm (9,5±0,3 mil). The thickness of the polished non-woven strips were 207±4 μm (8,2±0,2 mil).

In addition, in order to compare acquired two traditional paper tape for sealing seams (tape Sheetrock brandTM). One of the paper tape for sealing joints slightly polished on one side using the sandpaper grit 120. The thickness of the unpolished paper strip was 216±7 µm (8,5±0,3 mil). The thickness of sanded paper strip was 217±2 μm (8,5±0,1 mil).

Determined the tensile strength of each of the four strips. The tensile strength in the transverse direction were determined in accordance With ASTM 474 (1/2-inch measuring device (1/2” gauge), 0.66 inch/min (1,68 cm/min, 73°F (23°C), relative humidity of 50%for polished materials and according to TAPPI T 494om (7-inch measuring device, 1 inch/minute (2.54 cm/min), 73°F (23°C), 50%relative humidity) for unpolished materials. The tensile strength in the longitudinal direction was determined according to TAPPI T 494om (7-inch measuring device, 1 inch/minute (2.54 cm/min), 73°F (23°C), relative humidity 50%) for both polished and unpolished materials. The data of tensile strength are shown in Table 1.

Table 1
MaterialTransverse directionLongitudinal direction
Ahlstrom 7136-unpolished5200±123 N/m (29,7±0.7 lb/inch)7719±192 N/m (44,1±1.1 lb/inch)
Ahlstrom 7136-polished2564±119 N/m (14,6±1,3 fu is dpi) 4651±618 N/m (26,6±3.5 lbs/inch)
Paper - unpolished5274±23 N/m (30,1±0.1 lb/inch)9225±50 N/m (52,7±0.3 lb/inch)
Paper - polished5441±186 N/m (31,1±1.1 lb/inch)7270±270 N/m (41,5±1.5 lbs/inch)

Then each strip of nonwoven material was applied to the seam between the panels wall plates (walls of dry masonry) with the use of the composition for the grout hardens type SHEETROCK brand™. Determined the resulting coupling strips, a composition for sealing seams of the wall plate and the wall surface of dry masonry in accordance with ASTM C 474-05 under different conditions. Qualified according to ASTM adhesion to the composition for sealing joints for each material under various conditions are shown in Table 2.

Table 2
ConditionsAhlstrom 7136Paper
Room temperature100%100%
Oven (43°C(110°F))100%100%
29°C (85°F) / relative humidity 10%100%100%
24°C (75°F) / 50%relative humidity83% - 100%90% - 100%
4°C (40°F) / relative humidity 80%0% - 20%56% - 72%
Return to 24°C (75°F) / 50%relative humidity100%100%

These results show that non-woven, kinabuhayan materials according to this invention can be used as a tape for sealing joints without sacrificing tensile strength and adhesion to the composition for sealing seams and with the surface of drywall.

All references, including publications, patents and patent applications, cited here included by reference to the same extent as if it had been specified that each reference was individually and specifically incorporated by reference and were set forth here in its entirety.

The use of words in singular and plural, and similar designations in the context of describing the invention (especially in the context of subsequent claims should be construed as covering both the singular and the plural, if tol is to here is not specified or it is clearly not contrary to the context. The expressions “including”, “having”, “including” and “comprising” should be interpreted as a non-limiting expressions (i.e. mean “includes, but is not limited to”)unless otherwise indicated. Enumeration of intervals of values here is only intended to serve as a legend individual links to each separate value falling within this interval, if only not here specified, and each separate value is incorporated into the description of the invention, as if it had been listed here individually. All methods described here can be performed in any suitable order, if only here, not specified or it is clearly not contrary to the context. The use of any and all examples, or exemplary language (e.g., “such as”)provided here are intended only to better explain the present invention and not to impose restrictions on the scope of the present invention, unless stated otherwise. No language in the specification should be construed as indicating any undeclared element, which is essential for the application of the invention in practice.

Here is described the preferred embodiment of the present invention, including the best-known authors of this variant of the invention on which westline of the present invention. When reading the above description of the invention any average person skilled in the art can detect changes in these preferred embodiments of the present invention. The authors of the present invention assume that the experts in this field use such changes accordingly, and the authors of the present invention involve the implementation of this invention otherwise than specifically described herein. Therefore, this invention includes all modifications and equivalents of the subject matter set forth in the attached claims, which allows the current legislation. In addition, this invention covers any combination of the above-described elements in all possible variations, if only here, not specified or it is clearly not contrary to the context.

1. Tape for sealing joints, including non-woven base, including fibers selected from the group consisting of natural cellulosic fibers, synthetic polymer fibers, glass fibers and combinations thereof, and non-woven backing has the following characteristics defined in accordance with ASTM C474-05:
the relative swelling in the transverse direction of less than about 1.3%;
the relative swelling in the longitudinal direction of less than about 0.2% and
- tensile strength in n the peppery direction at least approximately 2625 N/m (15 pounds-force per inch).

2. Tape for sealing joints according to claim 1, where the non-woven framework has the following characteristics defined in accordance with ASTM C474-05:
the relative swelling in the transverse direction of less than about 0.8%;
the relative swelling in the longitudinal direction of less than about 0.1% and
the tensile strength in the transverse direction of at least about 3500 N/m (20 lb-force per inch).

3. Tape for sealing joints according to claim 1, where the fibers include natural cellulose fibers and fiberglass.

4. Tape for sealing joints according to claim 1, where the fibers include synthetic polymeric fiber selected from the group consisting of a complex of the polyester, polyethylene, polypropylene, nylon, polyacetate, polyacrylate, polystyrene, polyvinyl acetate, viscose, polyvinyl chloride, copolymers and combinations thereof.

5. Tape for sealing joints according to claim 1, where the fibers include fibers of a tough polyester.

6. Tape for sealing joints according to claim 1, where the fibers include natural cellulose fibers, and natural fibers are fibers of wood pulp.

7. Tape for sealing joints according to claim 1, where the non-woven base includes binder.

8. Tape for sealing joints according to claim 7, where the binder is selected from the group consisting of polyvinyl alcohol, polyvinyl acetate, copolymers of ethylene and vinyl acetate is, polyvinyl chloride, starch, crosslinked starch, and combinations thereof.

9. Tape for sealing joints according to claim 7, where the binder is a crosslinked starch, or a combination of cross-linked starch and polyvinyl alcohol.

10. Tape for sealing joints according to claim 1, where the non-woven base at least partially covered with a substance that enhances grip.

11. Tape for sealing seams of claim 10, where the substance, reinforcing the clutch selected from the group consisting of polymers derived from vinyl acetate, vinyl alcohol, vinyl chloride, acrylic acid, copolymers of ethylene and vinyl acetate and copolymers of ethylene and vinyl chloride, starch and combinations thereof.

12. Tape for sealing seams of claim 10, where the substance, reinforcing the clutch is a polyvinyl acetate, polyvinyl alcohol or a combination thereof.

13. Tape for sealing joints according to claim 1, further comprising an adhesive material at least on the back side of the nonwoven base.

14. Tape for sealing joints according to claim 1, where the non-woven base includes at least about 30% or more of synthetic polymer fibers based on the total weight of the nonwoven base.

15. Tape for sealing joints according to claim 1, where the non-woven base includes less than about 1 wt.% natural cellulose fibers.

16. Method of finishing a seam between plates, including:
(i) applying tape C is delky seams, including non-woven base containing fibers selected from the group consisting of natural cellulosic fibers, synthetic polymer fibers, glass fibers and combinations thereof, on the seam between the plates by at least partial immersion of the tape for sealing joints in the first layer composition for sealing seams, and non-woven backing has the following characteristics defined in accordance with ASTM C474-05:
the relative swelling in the transverse direction of less than about 1.3%,
the relative swelling in the longitudinal direction of less than about 0.2% and
the tensile strength in the transverse direction at least approximately 2625 N/m (15 pounds-force per inch), and
(ii) applying a second layer of the composition for sealing seams on top of the tape, and stage (ii) is carried out before the first layer of the composition for sealing seams, put on stage (i)essentially dried up.

17. The method according to clause 16, where the non-woven base further includes an adhesive material at least on the back side of the nonwoven base.

18. The method according to item 16, further comprising (iii) applying a third layer of the composition for sealing seams on top of the tape, and stage (iii) is carried out before the second layer is essentially dried up.

19. The method according to clause 16, where the plates are selected from the group consisting of slabs of drywall and cement slabs.

20. The way the earnest processing seam between the plates, including:
(i) the application of tape for sealing joints, including non-woven base, including fibers selected from the group consisting of natural cellulosic fibers, synthetic polymer fibers, glass fibers and combinations thereof, and an adhesive material at least on the back side of the nonwoven basis at the seam between the plates with the use of the adhesive material and non-woven backing has the following characteristics defined in accordance with ASTM C474-05:
the relative swelling in the transverse direction of less than about 1.3%,
the relative swelling in the longitudinal direction of less than about 0.2% and
the tensile strength in the transverse direction at least approximately 2625 N/m (15 pounds-force per inch) and
(ii) applying the first layer of the composition for sealing seams on top of the tape and
(iii) applying a second layer of the composition for sealing seams on top of the tape, and stage (iii) is carried out before the first layer of the composition for sealing seams, put on stage (ii), essentially dried up.



 

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SUBSTANCE: method to strengthen bent monolithic reinforced concrete slabs is realised with a reinforcement cable fixed in the lower part of the strengthened slab. The cable is laid into a groove made in the lower part of the slab. One end of the cable is rigidly fixed. The other end of the cable is forcedly displaced to obtain the required prestressing in the cable. Then such prestressed cable is rigidly fixed in the slab. Afterwards protruding parts are cut, and the groove is covered with the cable aflush with the lower part of the slab. Also a device for slabs reinforcement is disclosed.

EFFECT: even distribution of unloading forces in a stretched zone, elimination of prestressing forces transfer towards working reinforcement of structures, reduced labour intensiveness of works, increased operational reliability and durability of reinforcement.

3 cl, 2 dwg

FIELD: construction.

SUBSTANCE: in an apartment building the bathroom units to be repaired are arranged above each other. Bearing structures at various floors resting on walls of bathroom units are supported outside the bathroom units walls with supports. Supports pass from the upper part of one bearing structure to the other. Bathroom units are cut from the rest of the building structure between the areas of support and walls of bathroom units and are fully removed. New independent sections of bathroom units are lowered downright into a shaft formed in this manner and are laid one onto another. Bearing structures of various floors are connected to bathroom units arranged at according height. Afterwards supports arranged at various floors are removed.

EFFECT: quickness and simplicity of repair.

10 cl, 6 dwg

FIELD: construction.

SUBSTANCE: main cross beam is mounted, a pair of beam balancers covering column at both sides and balancing on the main traction rods are suspended to cross beam ends at main traction rods hanging along sides of emergency cantilever. Short arms of this pair of balancers are brought and rested at the bottom under supports of adjacent crane beams, and long arms of this pair are rested at the bottom against ends of thrust beams protruding beyond sides of column via adjustment nuts of traction rods. Accordingly middle parts of these beams are rested at the bottom against fixed supports of angles welded to bare working reinforcement of column at its back side. In gap between crane beams and near front face of upper part of column, next to centre of gravity of lower part of column, basement is locally fixed, and low modular pad is rested against it, for instance, from conveyor belt.

EFFECT: full recovery of building carcass column serviceability without interruption of production process.

2 dwg

FIELD: construction.

SUBSTANCE: method of column reinforcement is realised with the help of steel race, elements of which are tightly applied onto column and welded to each other. Race elements are "П"-shaped rods, which are arranged directly on column body in pairs. In each pair the ends of "П"-shaped rods are directed towards each other. Pairs are arranged on column with a pitch. Pairs are tightly fixed on column with the help of pressing devices. Ends of "П"-shaped rods, applied onto each other, are welded to each other. Rods are installed between pairs at height of pitch, and their ends are welded to pairs.

EFFECT: increased bearing capacity and prevention of column and column joints damage.

6 dwg

FIELD: construction.

SUBSTANCE: method for dismantling of brick vaults consists in arrangement of unloading stands, within trestle work. Process of dismantling is started from the centre, and braces are installed in place of dismantled sections in process of works.

EFFECT: lower pernicious effect of structure dismantling against bearing system of a building, lower injury rate in process of dismantling.

2 cl, 2 dwg

FIELD: construction.

SUBSTANCE: in method of reinforcement tightened reinforcement bars are additionally installed, which are made of reinforcement items as separate sections of reinforcement coupled by buckle, with installation of permanent circular anchors and anchor distribution plates. Tightened reinforcement rods are installed in cavity channels of floor panel through horizontal holes cut in middle part of panel lower shelf, permanent circular anchors are installed in near-support part of panel and are equipped with anchor plates.

EFFECT: improved safety of damaged panel condition in process of recovery works, creation of reliable link of reinforced panel and coupled elements of reinforcement device.

16 cl, 7 dwg

FIELD: construction.

SUBSTANCE: in method for accelerated assembly of attics from unified sandwich panels, including installation of assembly lift at one of building ends, arrangement of assembly platform on roof and arrangement of concrete belt around building perimetre, the first row of panels is installed on both sides of building, which consists of angular panels installed on anchors, afterwards intermediate support pillars and longitudinal crossbars are installed, on which movable assembly truss-template is installed, used for prevention of frame folding and sagging in process of assembly, assembly truss moves in guides with the help of rolls, sandwich panels are installed into design position by means of hydraulic manipulator fixed by high-strength bolts by torque spanner, subsequent arcs of attic type are assembled by movement of assembly truss-template.

EFFECT: reduced labour intensiveness and simplified assembly of structure, reduced time for attic assembly, mechanisation of works.

1 cl, 6 dwg

FIELD: construction.

SUBSTANCE: device includes installed pulled reinforcement rods equipped with reinforcement items and installed into panel channels. Each installed pulled reinforcement rod is arranged of reinforcement items. Reinforcement items include separate sections of reinforcement coupled with turnbuckle, permanent end anchors and anchor distribution plates. Sections of pulled reinforcement rod are installed in cavity channels of panel via horizontal holes. Horizontal holes are cut in middle part of panel lower shelf along axis of symmetry of cavity channels. Permanent end anchors of pulled reinforcement rod are installed in near-support part of panel and are equipped with distributing plates. Plates are placed into vertical narrow slots cut in upper shelf and inner ribs of panel.

EFFECT: recovery of main operational characteristics of reinforced panel.

14 cl, 7 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to a method of preparing gypsum mortar, a method of making a gypsum article using the said mortar and a gypsum article made from said mortar. The invention can be used in the building industry. The method of preparing gypsum mortar involves obtaining a certain amount of dry components containing gypsum plaster; preliminary dissolution of the modifier and plasticiser in water to obtain a solution, where the modifier is selected from a group comprising potassium phosphonate and carbonate; and mixing the said solution with the dry components. The method of making the gypsum article involves preparation of gypsum mortar using the method described above, moulding the said gypsum mortar into the article and solidification of the liquid gypsum mortar. The article is obtained using the method described above. The invention is developed in subclaims.

EFFECT: high fluidity of the mortar while reducing content of plasticiser, shorter setting time.

21 cl, 3 ex, 3 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a method of preparing gypsum suspensions, as well as to making articles from said suspensions. The invention discloses gypsum-containing suspensions which contain gypsum plaster, naphthalene sulphonate dispersing agent and pre-gelled starch. The naphthalene sulphonate dispersing agent is present in amount of at least approximately 0.58% of the mass of the gypsum plaster. The pre-gelled starch is present in amount of at least approximately 0.5-10% of the mass of the dry gypsum plaster in the mixture. The suspension can contain other additives, including trimethaphosphate salts, catalysts, binding materials, lint, glass fibre and other known ingredients. The invention also discloses gypsum-containing products made from such suspensions, e.g. gypsum facing slabs, and a method of making gypsum facing slabs. The invention is developed in subclaims.

EFFECT: high strength of strength of the gypsum plate.

22 cl, 6 tbl, 6 ex

FIELD: civil engineering.

SUBSTANCE: particular invention relates to structures of interior walls of building with application of its coating by compound and connective material. There are described structures of interior walls of building (versions), differs by that contains film coating of components of dry wall, including elements of dry wall, containing at least one layer of film coating on element of dry wall, herewith compound of film coating includes water, coupling medium, filler, including at least about 60% by weight CaCO3, and non-cellulose thickener, herewith specified non-cellulose thickener contains polyacrylate; and at least one connective material, connecting coating by film elements of dry wall, forming in essence flat outside surface. Also it is proposed method of creation of interior walls, compound of coating for dry walls and coated by film coating element of dry wall.

EFFECT: effectiveness increase of installation of dry walls and improvement of its texture, and also increasing of its qualitative characteristics.

56 cl, 2 tbl, 3 ex

Reinforced product // 2350721

FIELD: construction industry.

SUBSTANCE: invention refers to construction industry, and namely to reinforced structures, and can be used for constructing buildings and structures of various configuration and with various number of storeys. Reinforced product consists of interior structure made in the form of reinforcement cage, and external curing filling with a mesh located thereinside and interconnected with reinforcement cage. Mesh is provided with solid elements fixed thereon, thus obtaining uniformly thickened layer of curing filling, which is proportional to dimensions of fixed solid elements, and forming load-carrying and enclosing layer.

EFFECT: enlarging technological capabilities, and namely performing load-carrying and enclosing function of construction.

1 cl, 3 dwg

FIELD: construction, superstructures.

SUBSTANCE: method applies to the field of finishing works that are done in construction during execution and reconstruction of buildings, and also internal finishes in already finished buildings and constructions. The problem of the current technical solution involves simplifying the technology and ensuring the possibility of forming covers on housing spaces of different functions, which would visually covers its possible initial defects. The method of executing the relief covering on walls (partitions, ceilings) of housing buildings, involves preparation of its surface prime coat under priming of the first layer of plaster, application of the first layer of plaster and discrete on the area of application of further layers with the formation on the layers of different height relative to the first layer projections. Starting from the second layer, subsequent layers are applied by a palette knife on the projection parts of the previous relief. The subsequent applied layer is done after the preceding layer has dried up, and this determines the loss of mobility under the action of tangential and/or normal force of application of subsequent layer using the palette knife. Layers are applied with a thickness of up to 2.5 mm. Here is a description of relief covering done by the described method.

EFFECT: getting covers for the hiding of surface defects with a simplified technology of preparation.

9 cl, 5 dwg

FIELD: building, particularly three-dimensional framework structures.

SUBSTANCE: building panel comprises frame members, connection means, which connect frame member one to another to create laminated frame in frame plane. The laminated frame includes steel members and hardened flowing material layer defining inner cavity, as well as insulation means located in the cavity. Hardened flowing material layer is made as flat asbestos cement sheet installed so that the sheet adjoins outer steel frame layers and may be detachably fastened thereto. The connection means are made as threaded members arranged in frame cavity and as orifices for threaded member receiving. Heat insulation means is made as expanded vermiculite located in frame cavity after three-dimensional building structure erection at building site. Method of building panel production, foundation structure, three-dimensional building structure, method of three-dimensional building structure production and method of building heat-insulation are also disclosed.

EFFECT: increased heat insulation and soundproof properties, possibility of compact three-dimensional building structure panel member storage and transportation together with foundation structure members, provision of incremental building frame erection without climbing crane usage, improved manufacturability and reduced operational costs regardless of weather conditions.

16 cl, 15 dwg

The invention relates to the field of construction and can be used for insulation of external walls
The invention relates to the construction, namely, plaster decorative and artistic works, in particular, to a technology of performing molded products

FIELD: construction.

SUBSTANCE: light heat-insulation building unit arranged in internal and external walls of a building and formed from bubble synthetic resin, comprises a connecting ledge on the upper side, so that when it is laid, no cavity is formed, a connecting slot in the basement of the unit corresponding to the connecting ledge, and also a protruding section and a section of the slot arranged on the front and rear surfaces of the unit. At the same it is equipped with an auxiliary unit having the same shape as the heat insulation unit, which is cut as "L" on a segment of the upper section of its one surface, and has a ledge of cylindrical shape on the upper section of the cut element, and is joined to one side of the heat insulation unit. Also versions of the units are described.

EFFECT: development of units that make it possible to complete treatment of building walls by attachment of a finishing material to a unit, reduction of costs, simplified process of unit formation.

13 cl, 21 dwg

FIELD: construction.

SUBSTANCE: multilayer building block comprises a decorative layer, a central layer arranged between an inner and outer structural layers made of ceramsite-concrete mix. The mix to make the central layer contains the following components, per 1 m3 of the mix: ceramsite gravel of 8÷22 mm fraction with apparent density of 350÷450 kg/m3 in volume of 1 m3; portland cement 130÷440 kg, polyvinyl acetate glue in volume of 1.3÷4.7 l, water in volume of 115÷125 l. The method is characterised to manufacture the multilayer building block.

EFFECT: increased strength of the block and simplified method of its manufacturing.

5 cl, 3 dwg

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