Prepreg

FIELD: printing industry.

SUBSTANCE: prepreg is proposed, made by impregnation of decorative paper-base with a solution of impregnating resin, containing at least one polymer latex and at least one modified starch with molecular-weight distribution: not more than 6 wt % of molecules with molecular weight of up to 1000 g/mole, from 5 to 20 wt % of molecules with molecular weight from 1000 to 5000 g/mole, from 20 to 40 wt % of molecules with molecular weight from 5000 to 25000 g/mole, from 20 to 45 wt % of molecules with molecular weight from 25000 to 200000 g/mole, from 5 to 22 wt % of molecules with molecular weight from 200000 to 1000000 g/mole, from 0.5 to 5 wt % of molecules with molecular weight of more than 1000000 g/mole.

EFFECT: decorative paper or material for decorative coating made from prepreg are proposed.

2 cl

 

The invention relates to pre-impregnated products and get them decorative impregnated (imprintirovannymi) material or materials for decorative coatings.

Materials for decorative coatings, so-called decorative paper or decorative film, preferably used for the surface coating in the manufacture of furniture and for interior decoration, in particular in laminate floors. Under the decorative paper/decorative film means impregnated with artificial resin or impregnated with artificial resin and surface-treated paper with drawing or without printing. Decorative paper/decorative film glued to the substrate or bonded to it.

Depending on the type of impregnation process are distinguished decorative paper/decorative film impregnated through the core of the paper and the pre-impregnated products, so-called prepregs, whose paper in the paper machine is only partially impregnated in the production line or offline. None of the known still prepregs, which include formaldehydefree thermosetting resin or depleted acrylate formaldehyde binder, does not meet all requirements, such as good suitability for printing, high the first resistance to delamination, good sleevenote and good suitability for coating.

For gluing decorative films on chipboard material such as chipboard or fibreboard medium density, commonly used adhesives urea-based or polyvinyl acetate (PVAC). Bonding decorative films is not always guaranteed.

Laminated plastics (high pressure laminates are laminates which are obtained by crushing a few soaked, stacked on top of other layers of paper. The structure of such laminates generally consists of creating a very high surface durability transparent upper layer of the impregnated resin decorative paper and one or more impregnated with phenolic resin layers of Kraft paper. As grounds for this are, for example, solid fibreboard and chipboard, and plywood.

The laminates obtained korotkoactuti method (low pressure laminates), decorative paper, impregnated with synthetic resin, immediately pressed with a base, such as wood-shaving plate, applying low pressures.

Decorative paper used in the above-mentioned materials for the coating is white or colored and is used with or without additional n is dicator.

With regard to technological properties, serving as the source material of the so-called decorative base paper must meet certain requirements. These include high opacity for better camouflage Foundation, homogeneous structure and uniformity of the weight of the sheet for uniform absorption resin, high light resistance, high purity and uniformity of color for good reproducibility napechatanogo picture, high moisture resistance for easy impregnation process, the corresponding absorption to achieve the desired degree of impregnation of the resin, the strength in the dry state, which is important for the processes of winding in the paper machine and printing in the printing machine. In addition, of particular importance is the resistance to delamination, as it is a measure of how well you can handle decorative base paper. So, pasted decorative paper/decorative film should not be disarranged during these process steps, such as sawing or drilling.

To obtain the decorative surface of the decorative base paper put print. First of all, we use the so-called rotary method of gravure printing in which the print is transferred to the paper by means of several fluted rollers. Individual dots print dalinapominaete on the surface of the paper fully and with greater intensity. But it was while decorative gravure printing on the surface of the paper is transferred only a small part of the existing corrugated rolls halftone dots. There are so-called missing the point, i.e. defective places. Often printing ink penetrates too deeply into the tissue paper, which decreases the intensity of the color. The necessary conditions for a good print with a small number of defects and high intensity colors are smooth and homogeneous surface topography and agreed characteristics of color perception by the surface of the paper.

For this reason, the base paper usually looks so-called soft calenders, sometimes the so-called Janus-calenders. This processing may result in flattening the surface of the paper and thereby to its seal, which disadvantageously affects the ability to absorb the resin.

The above properties are significantly affected by the impregnation of decorative paper base, i.e. the type of impregnating products.

Solutions impregnating resin used for impregnation of decorative paper base, are containing formaldehyde resins based on urea, melamine or phenol, which leads to fragile products with poor resistance to tear propagation and poor suitability for printing.

Recently in the e more watch to a solution impregnating resin used for impregnation of decorative paper base, does not contain harmful substances, in particular formaldehyde.

In the document DE 19728250 A1 describes the use of bettermanaged resins based on copolymers of styrene and acrylic ester to obtain not prone to yellowing of the prepregs. The disadvantage of this material is that it leads to a product with poor resistance to delamination.

Bettermanaged solutions impregnating resin for impregnation of decorative base paper also described in documents EP 0648248 A1 and EP 0739435 A1. They consist preferably of a copolymer of styrene and acrylic ester, and polyvinyl alcohol. However, the quality of paper impregnated with this solution impregnating resin can be further improved in respect of resistance to delamination.

In document WO 01/11139 offered setformelement composition comprising a binder, an aqueous polymer dispersion and glyoxal, which allows you to get resistant to delamination decorative paper. However, the paper is impregnated with this composition, not very well masked.

Therefore, the basis of the invention has the task to provide besformenny the prepreg, which does not have the above-mentioned disadvantages and which is characterized, in particular, good suitability for printing the Oia and high resistance to delamination.

This problem is solved by a prepreg, which can be obtained by impregnation of the paper base solution impregnating resin containing at least one polymer latex and at least one modified starch, which has a molecular weight distribution, characterized by the coefficient of polydispersity Mw/Mn of at least 6. Preferred starches having a coefficient of polydispersity from 6 to 23.

In one particular form of the invention, the solution impregnating resin contains at least one polymer latex and at least one modified starch, which preferably has the following distribution of molecules of starch molecular weights:

- not more than 6 wt.% molecules with a molecular weight of from 0 to 1000 g/mol,

from 5 to 20 wt.% molecules with a molecular weight of from 1000 to 5000 g/mol,

from 20 to 40 wt.% molecules with a molecular weight of from 5000 to 25000 g/mol,

- from 20 to 45 wt.% molecules with a molecular weight of from 25,000 to 200,000 g/mol,

from 5 to 22 wt.% molecules with a molecular weight of 200,000 to 1,000,000 g/mol,

from 0.5 to 5 wt.% molecules with a molecular weight of more than 1,000,000 g/mol.

As the coefficient of polydispersity usually given ratio srednevekovoi molecular weight to srednekamennogo, Mw/Mn. It provides the information about the width of the curve of molecular weight distribution.

Molecular wasowo the distribution of modified starches is installed in the usual way with the manufacturer of starch using gel chromatography (GPC). GPC analysis was carried out on the chromatograph columns Shodex KS. The eluent was 0,05 m NaOH solution at a throughput rate of 1 ml/min Calibration was carried out with pullulanase standards with known molecular masses.

All modified starches used according to the invention, commercially available. This involves, in particular, corn and potato starch subjected to thermal and oxidative breakdown.

Under the prepreg according to the invention is paper, partially impregnated with resin. The amount of impregnating resin is preferably from 10 to 35 wt.%, but especially from 12 to 30 wt.%, in the calculation of the density of decorative base paper.

It turned out that the solution impregnating resin according to the invention is particularly well suited, as it not only leads to improved resistance to delamination soaked them with paper, but you also gain a comparable good or even better than in the prior art, results in relation to other properties, such as suitability for printing, the state of varnish or yellowing. In addition, there is regular when using hydrophilic binder problems laminating (bonding or glue with base) impregnated paper. This means that the solution impregnating resin according to the invention allows to obtain a prepreg with a good prigoda the awn for laminating. Another advantage is that the prepreg can economically be obtained at high speeds of the machine.

The polymer latex may preferably be a styrene copolymer such as a copolymer of styrene and acrylic ester, a copolymer of styrene with vinyl acetate, the best choice is a copolymer or a copolymer of styrene with maleic acid. But can also be used and mixtures of these copolymers. Particularly preferred polymers that have a high ability to samosiuk. Also suitable samonasraivayuschiesya polymers.

In one particular form of the invention, the solution impregnating resin used to obtain the prepreg according to the invention contains not including ethyl copolymer of styrene and an ester of (meth)acrylic acid.

The quantitative ratio of starch/polymer latex in solution impregnating resin is preferably from 80/20 to 20/80, however, preferably quantitative ratio of from 45/55 to 65/35, and especially from 50/50 to 60/40, each time calculated on the weight of the impregnating resin (absolutely dry).

The following form of the invention, the solution impregnating resin contains pigments and/or fillers. The amount of pigment and/or filler can be from 1 to 30 wt.%, in particular from 2 to 20 wt.%. Data on the number calculated on the weight of binder (absolute is dry). The term binder refers to a mixture containing a polymer latex and modified starch.

The solution impregnating resin used to produce prepregs according to the invention, has a total solids content, based on dry weight, 9 to 40 wt.%, preferably from 20 to 35 wt.%, and particularly preferably from 26 to 30 wt.%.

Upon receipt of a solution impregnating resin is first mixed starch, which is soluble in cold water, i.e. at a temperature from room temperature up to at most 60°C, or boiled at a temperature of about 120-145°C. this is approximately 40-45%suspension with a pH of about 5-6. In the next step, subject to the desired solids content and the quantitative relationship starch/latex, is adding about 50%dispersion of latex at pH values from 5 to 10. The next step may be conducted by adding a pigment or filler.

Impregnated decorative paper-based paper, which is not subject to the sizing in the mass, nor the gluing surface. It consists mainly of cellulose, pigments and fillers and conventional additives. Conventional additives can be agents, giving blagorodnost, agents holding and fixing means. Decorative base paper differs from ordinary paper is much higher the obsession of filler or pigment and a lack of normal for paper sizing in the mass or surface sizing.

Impregnated according to the invention, the base paper may contain a high proportion of pigment or filler. The proportion of filler in the paper-based can be up to 55 wt.%, in particular from 8 to 45 wt.%, in the calculation of the density. Suitable pigments and fillers are, for example, titanium dioxide, talc, zinc sulfide, kaolin, aluminum oxide, calcium carbonate, aluminum oxide, aluminosilicates and magnesium silicates or mixtures thereof.

As the cellulose to obtain a base paper can be applied cellulose from softwood (long fiber pulp) and/or pulp of hardwood (short-fiber pulp). Can also be used cotton fibers and their mixtures with the already mentioned pulp grades. Especially preferred, for example, a mixture of cellulose from softwood and hardwood in the ratio of from 10:90 to 90:10, in particular from 20:80 to 80:20. But favorable was the use of 100 wt.% pulp from hardwood. Quantitative data calculated on the weight of cellulose (absolutely dry).

Preferably the pulp mixture may have the content of the cation-modified cellulose fibers of at least 5 wt.%, based on the weight of the pulp mixture. Particularly advantageous has proved a content of from 10 to 50 wt.%, in particular from 10 to 20 wt.%, cation-Modific the trated cellulose in the pulp mixture. Cationic modification of cellulose fibers is carried out by reaction of the fibers with epichlorhydrine resin and a tertiary amine or by reaction with Quaternary ameriglide, such as chargereservationresponse or glycidylmethacrylate. Cation-modified cellulose, as well as receive them known, for example, DAS PAPIER, Heft 12 (1980) S.575-579.

The paper base may be produced on paper machines Furdrine or samojedny paper machines. This pulp mixture with a consistency of 2-5 wt.% you can grind to the consistency of grind from 10 to 45°SR. In a mixing VAT, you can add fillers such as titanium dioxide and talc, and the agent, giving blagorodnost, and mixed with the pulp mixture. Obtained a dense mass can be diluted to a consistency of about 1% and, if required, add further auxiliary substances, such as agent retention, non, aluminum sulfate and other above-mentioned excipients. This diluted the weight carried through the drain on the grid paper machine wire section. Formed non-woven fabric, and after removal of water receive a base paper which is then dried. The density of the resulting paper may be from 15 to 300 g/m2. However, particularly suitable is a boom is a-basis with a density of from 40 to 100 g/m 2.

The coating used according to the invention the solution of the impregnating resin can be carried out in a paper machine or offline by spraying, impregnation, coating rollers or smearing (squeegee). Especially preferably the application through a size press or film press.

Drying the impregnated paper is carried out in the usual way using the infrared drying or roller drying in the temperature range from 120 to 180°C to a residual moisture content of 2-6%.

After drying, the impregnated paper so (prepreg) can optionally be glossed over or put a seal upon it, and then the usual way to laminate with different bases, such as chipboard or hardboard.

The following examples serve to further explain the invention. Unless otherwise specified, indicate the weight percent calculated on the weight of cellulose. The quantitative ratio means the ratio of the masses or scales.

Examples

Example 1

Preparing a suspension of pulp, crushing the pulp mixture with a consistency of 5%, consisting of 80 wt.% pulp from eucalyptus and 20 wt.% sulphate pulp from pine, to the extent of the grinding, 33°SR (Schopper-Riegler). Then was carried out by adding 1.8 wt.% epichlorhydrine resin as a wet strength agent. Aluminium sulphate was determined the pH of this suspension is ellulose 6.5. Then to the pulp suspension was added a mixture consisting of 30 wt.% titanium dioxide and 5 wt.% talc, 0.11 wt.% holding auxiliary agent and 0.03 wt.% the non, and received decorative base paper with a density of about 50 g/m2and ash content of about 23 wt.%. Weight data calculated on the weight of cellulose (absolutely dry).

This base paper in a size press with both sides impregnated with an aqueous solution of the resin (solids content of about 25 wt.%), containing modified starch C-Film 07324 (starch I, table 1) and the copolymer of styrene and n-butyl acrylate (Acronal®S 305 (D) in a quantitative ratio of 80:20. To do this, first prepared 45%mixture of starch and was diluted with water to a concentration of 25 wt.%. Then add the appropriate amount of a 50%aqueous dispersion of the polymer and the resulting polymer solution was diluted with water to a solids content of 25 wt.%.

Then the impregnated paper was dried at a temperature of about 120°C to a residual moisture content of 2.5%. The amount of deposited substance was after drying, 10 g/m2.

Example 2

Base paper from example 1 was impregnated by a size press with an aqueous solution of resin containing modified starch I and copolymer of styrene and n-butyl acrylate (Acronal®S 305 (D) in a quantitative ratio of 60:40, with three different quantities of the x of the applied substances. The solids content of the resin solution was 26 wt.%.

Then the impregnated paper was dried at a temperature of about 120°C to a residual moisture content of 2.5%. The amount of deposited substance was after drying, 7 g/m2(example 2A), 10 g/m2(example 2B) and 14 g/m2(example 2C).

Example 3

Base paper from example 1 was impregnated by a size press with an aqueous solution of the resin (solids content of 27 wt.%), which contains modified starch I and copolymer of styrene and n-butyl acrylate (Acronal®S 305 (D) in a quantitative ratio of 50:50.

Then the impregnated paper was dried at a temperature of about 120°C to a residual moisture content of 2.5%. The amount of deposited substance was after drying, 10 g/m2.

Example 4

Base paper from example 1 was impregnated by a size press with an aqueous solution of the resin (solids content of 25 wt.%), which contains modified starch I and copolymer of styrene and n-butyl acrylate (Acronal®S 305 (D) in a quantitative ratio of 20:80.

Then the impregnated paper was dried at a temperature of about 120°C to a residual moisture content of 2.5%. The amount of deposited substance was after drying, 10 g/m2.

Example 5

Base paper from example 1 was impregnated by a size press with an aqueous solution resin (content of solid substances is 25 wt.%), which contains modified starch C-Film 07311 (starch II, see table 1) and the copolymer of styrene and n-butyl acrylate (Acronal®S 305 (D) in a quantitative ratio of 60:40.

Then the impregnated paper was dried at a temperature of about 120°C to a residual moisture content of 2.5%. The amount of deposited substance was after drying, 10 g/m2.

Example 6

Base paper from example 1 was impregnated by a size press with an aqueous solution of the resin (solids content of 25 wt.%), which contains modified starch C-Film 07302 (starch III, see table 1) and the copolymer of styrene and n-butyl acrylate (Acronal®S 305 (D) in a quantitative ratio of 60:40.

Then the impregnated paper was dried at a temperature of about 120°C to a residual moisture content of 2.5%. The amount of deposited substance was after drying, 10 g/m2.

Example 7

Base paper from example 1 was impregnated by a size press with an aqueous solution of resin containing modified starch I and gidrofobizirovannym copolymer of styrene and butyl acrylate (Cartacoat®B 641) in a quantitative ratio of 60:40. The solids content of the resin solution was 26 wt.%. Then the impregnated paper was dried at a temperature of about 120°C to a residual moisture content of 2.5%. The amount of deposited substance was after drying, 10 g/m2.

Example 8

The paper is about the Nova from example 1 was impregnated by a size press with an aqueous solution of the resin, containing modified starch I and copolymer of styrene and n-butyl acrylate (Acronal®S 305 (D) in a quantitative ratio of 60:40, and titanium dioxide in the amount of 15 wt.% (based on the binder content (absolutely dry)). The solids content of the resin solution was 28 wt.%. Then the impregnated paper was dried at a temperature of about 120°C to a residual moisture content of 2.5%. The amount of deposited substance was after drying, 10 g/m2.

Comparative example V1

Base paper from example 1 was impregnated by a size press with an aqueous solution of resin containing dextrin (see table 1) and the copolymer of styrene and n-butyl acrylate (Acronal®S 305 (D) in a quantitative ratio of 60:40. The solids content of the resin solution was about 26 wt.%. Then the impregnated paper was dried at a temperature of about 120°C to a residual moisture content of 2.5%. The amount of deposited substance was after drying, 10 g/m2.

Comparative example V2

Base paper from example 1 was impregnated by a size press with an aqueous solution of resin containing modified starch C-Film 07380 (starch IV, see table 1) and the copolymer of styrene and butyl acrylate (Acronal®S 305 (D) in a quantitative ratio of 60:40. The solids content of the resin solution was about 26 wt.%.

Then soaked b is the magician was dried at a temperature of about 120°C to a residual moisture content of 2.5%. The amount of deposited substance was after drying, 10 g/m2.

Comparative example V3

Base paper from example 1 was impregnated by a size press with an aqueous solution of resin containing polyvinyl alcohol (Mowiol®4-98) and a copolymer of styrene with butyl acrylate (Acronal®S 305 (D) in a quantitative ratio of 20:80. The solids content of the resin solution was approximately 27 wt.%.

Then the impregnated paper was dried at a temperature of about 120°C to a residual moisture content of 2.5%. The amount of deposited substance was after drying, 10 g/m2.

The following table 2 shows the test results of the paper treated according to the invention, compared with the prior art. Tested the following properties.

z-Strength (as a measure of the resistance to delamination)

z-Strength (ultimate tensile strength) across the surface of the paper was determined according to TGL 25290/11 (wood technology Institute in Zurich) the usual decorative paper way. For this first test prepreg was cut on the stamp of test specimens with a diameter of 20 mm, were introduced one by one between two cylindrical surfaces, glued with these surfaces and utverjdali. Obtained samples for testing were secured in the clamping device across the surface of the film and subjected us livaudais load up to rupture. Ultimate tensile strength was calculated as follows:

σ ≈ 1B = Fmax/A

σ ≈ 1B - tensile stress in a direction across the film surface, in MPa (N/mm2),

Fmax- force at the moment of rupture of the sample, N,

A - area of the sample in mm2(314 mm2when d=20 mm).

Suitability for printing

Visual evaluation was carried out according to reference the directory of assessment: from 1 (very good) to 6 (very bad).

The condition of the lacquer (visual evaluation)

The evaluation was conducted by comparing with prepregs prior art (prepreg from Arjo Wiggins, comparative example 3). For this sample prepregs smeared suitable for this purpose conventional SH-varnish (SH-primer/water resistant lacquer entered acidic curing agent) in an amount of 12 g/m2. Then lacquered surface was evaluated by lateral illumination and compared with each other.

Yellowing (Definition values & Delta; b)

The degree of yellowing was measured according to DIN 6167. It shows the change in the yellowness of the sample under the action of temperature during a certain period of time. This is the difference between the so-called index of yellowness & Delta; b treated and untreated sample.

The value of parameter b was measured by the colorimeter SF 600 (Datacolor) with D65 10°.

As can be seen from table 2, the prepregs according to the invention detect the indicate good strength in the z-direction and best suitability for printing. Characteristics yellowing, in particular at elevated temperatures, the prepregs according to the invention is also improved. State of Lac compared with conventional prepregs better or comparable good.

Table 1
Modified starches
Molecular weight distribution,
g/mol
Starch IStarch IIStarch IIIStarch IVDextrin (Licopol
from South starch)
0-10003,904,421,8312,208,54
1000-500014,5416,367,6334,4133,88
5000-2500036,5628,6822,5947,5048,98
25000-20000038,853,54 42,74of 5.898,61
200000-1000000the ceiling of 5.6012,520,710,000,00
1000000-50000000,562,484,500,000,00
>50000000,000,020,000,000,00
The coefficient of polydispersity11,222,319,04,23,4

Table 2
The results of the tests
TestExamples
12A2B2C3 45678V1V2V3
z-Strength888888888,57,5777
Suitability for printing2222222221,5324
The condition of the lacquerbetterbetterbetterbetterbettergoodbetter betterbetterbettergoodgoodgood
Yellowing & Delta; b
140°-190°C
1,31,31,31,31,31,31,51,51,21,52,01,71,5
Yellowing & Delta; b
140°-210°C
3,03,03,03,03,03,03,23,22,72,94,03,53,6

1. The prepreg obtained by impregnation of decorative paper base solution impregnating resin, characterized in that the solution impregnating resin contains at least one polymer latex and at least one modified starch with a special Molek is Jarno-weight distribution, moreover, the molecular weight of the starch molecules are distributed as follows:
- not more than 6 wt.% molecules with molecular weight up to 1000 g/mol,
from 5 to 20 wt.% molecules with a molecular weight of from 1000 to 5000 g/mol,
from 20 to 40 wt.% molecules with a molecular weight of from 5000 to 25000 g/mol,
- from 20 to 45 wt.% molecules with a molecular weight of from 25,000 to 200,000 g/mol,
from 5 to 22 wt.% molecules with a molecular weight of 200,000 to 1,000,000 g/mol,
from 0.5 to 5 wt.% molecules with a molecular weight of more than 1,000,000 g/mol.

2. The prepreg according to claim 1, wherein the polymer latex is a copolymer of styrene and an ester of (meth)acrylic acid.

3. The prepreg according to claim 1, wherein the polymer latex is a copolymer of styrene and butyl acrylate.

4. The prepreg according to claim 1, characterized in that the quantitative ratio between the starch and the polymer latex is from 20/80 to 80/20 in the calculation of the mass of the impregnating resin (absolutely dry).

5. The prepreg according to claim 4, characterized in that the quantitative ratio of from 45/55 to 65/35 in the calculation of the mass of the impregnating resin (absolutely dry).

6. The prepreg according to claim 1, characterized in that the solution impregnating resin contains from 1 to 30 wt%. pigment and/or filler based on the weight of binder (absolutely dry).

7. The prepreg according to claim 6, characterized in that the pigment may be titanium dioxide, kaolin, bentonite and/or carbonate ka is ice.

8. The prepreg according to claim 1, characterized in that the solution impregnating resin has a solids content of from 9 to 40 wt.%.

9. The prepreg according to claim 1, characterized in that the amount of impregnating resin is from 10 to 35% of the density of decorative base paper.

10. Decorative paper or material for decorative coatings produced from the prepreg according to one of claims 1 to 9.



 

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1 cl

FIELD: construction industry; methods of production of decorative tiles with a grainy coating.

SUBSTANCE: the invention is pertaining to the field of construction industry, in particular, to the method of production of decorative tiles with a grainy coating to increase their water-resistance. The method provides, that the base before application of an adhesive underlayer is subjected to a water-repelling process and in the capacity of an adhesive underlayer use a 8-I2 % water solution of sodium salt of carboxymethylcellulose.

EFFECT: the invention ensures production of decorative tiles with a grainy coating.

4 cl

FIELD: decorative-lining sheet material for producing of material simulating natural or artificial stone or various kinds of wood.

SUBSTANCE: method involves providing thermal vacuum forming of thermoplastic sheets having thickness of 0.5-8 mm and comprising on its face side decorative-protective polymeric film.

EFFECT: wider range of decorative and lining materials and increased efficiency in simulating structure of natural or artificial materials.

2 cl, 1 dwg

FIELD: ceramic decorations.

SUBSTANCE: method of making ceramic decorative art wall panel comes to the following: tiles are placed on backing secured vertically with tilting of 10-15° successively, starting from lower horizontal row, tiles of which are placed on corresponding limiting step of backing.

EFFECT: improved quality of wall panels.

5 cl, 1 tbl, 4 dwg

FIELD: construction industry; methods of manufacture of the architectural-decorative products.

SUBSTANCE: the invention is pertaining to the method of manufacture of the architectural-decorative products. To increase the quality the products the method provides for laying of the color mixtures in the mold for casting of the product is conducted with usage of a vibration process on the vibration exciter.

EFFECT: the invention allows to improve quality of manufacture of the architectural-decorative products.

6 cl, 3 dwg

FIELD: papermaking.

SUBSTANCE: pre-impregnate is manufactured by impregnation of crude paper with thermosetting formaldehyde-free resin until content thereof 10 to 70%. Residual moisture content in pre-impregnate is 2-3%. Resin contains: at least one radical-polymerization polymer with less than 5% of α,β-ethylenically unsaturated mono- or dicarboxylic acid; at least one radical-polymerization polymer containing more than 5% of α,β-ethylenically unsaturated mono- or dicarboxylic acid; and at least one alkanolamine with at least two hydroxyl groups; or resin contains at least one radical-polymerization polymer with 5-100%, particularly 5-50%, or more particularly 10-40% of α,β-ethylenically unsaturated mono- or dicarboxylic acid and at least one above alkanolamine.

EFFECT: improved quality of surface, printing properties, delamination resistance, and varnishing capacity.

16 cl, 3 dwg, 2 tbl, 2 ex

FIELD: construction industry; domestic appliances; electrical engineering; motor-car industry; methods of production and application of the laminated composite materials with the different layers of a resin.

SUBSTANCE: the invention is pertaining to the method of production and application of the laminated composite material with the different layers of a resin and may used in construction industry, domestic appliances, electrical engineering, motor-car industry. The laminated composite material contains the carrier made out of the thermoplastic polymeric compound, the located on it intermediate layer also made out of the thermoplastic polymeric compound and the applied on the intermediate layer of the thermoreactive layer. Between the carrier and the intermediate layer there is a layer of the resin (a) with the rate of consolidation of at least 20 %. Between the intermediate layer and the thermoreactive layer there is the layer of the resin (c) with the rate of consolidation of at least 60 %. The materials of the layers are laid as the flat sheets and at the temperature of 150-300° C link to the carrier. The material possess the high degree of stiffness and impact toughness, the high quality of the surface, the fast and easy solidification.

EFFECT: the invention ensures the high degree of stiffness and impact toughness, the high quality of the surface, the fast and easy solidification.

13 cl, 1 ex

FIELD: construction materials industry; production of the moldable decorative laminated material.

SUBSTANCE: the invention is pertaining to the moldable complicated decorative laminated material, which contains the polymer impregnated decorative layer made out of the bilateral expansible decorative paper and the core polymer impregnated layer formed out of the bilateral extendable kraft-paper. The laminated material is used for production of the different products requiring the molding concerning the surface of the complicated form, in particular, to the packet made out of the laminated material. The board made out of the laminated material has the moldable base in addition to the decorative layer. The method of manufacture of the moldable decorative laminated material includes the following operations: treatment of the decorating paper, its impregnation, the treatment and impregnation of the kraft-paper, the layer by layer stacking and joining of the layers of the decorative and kraft-paper under pressure with their preliminary impregnation with the phenol-formaldehyde polymeric compound. The technical result of the invention is improvement of the surface properties of the decorative laminated material.

EFFECT: the invention ensures improvement of the surface properties of the decorative laminated material.

37 cl, 8 dwg

FIELD: construction.

SUBSTANCE: method comprises applying a lining material on the surface of the panel, gluing the lining material to the surface of the panel, pressing, and conditioning. Before applying the lining material, the panel is dampened and treated with steam. Pressing is performed at a temperature 127-132°C and at a pressure of 170 bar for 4-6 min.

EFFECT: enhanced efficiency.

3 cl

FIELD: manufacture of decorative panels.

SUBSTANCE: prior to delivery of PVC blank to working area, its surface is subjected to loosening for increase of surface activity and for enhancing adhesion by applying solution of primer; use is made in working area of contra-shaft for holding-down the blank to drive guide transporting wheels and for rolling-on the facing material and connecting it with front surface; used as hold-down device is hold-down shaft with its own program-controlled shaft which is made from soft elastic material for copying the configuration of front and side surfaces of blank at the moment of connection with facing material at simultaneous stretching of it for avoidance of folds; its longitudinal axis is located at angle of from 0 to 90° relative to delivery of blank.

EFFECT: improved quality of facing; simplified construction of device; increased productivity of process.

5 cl, 3 dwg

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