Textile surface with increased degree of visual contrast

FIELD: textile industry, in particular, providing textile surface with at least one side having increased degree of visual contrast.

SUBSTANCE: textile surface is produced on the basis of threads or filaments of at least three types, namely, extinguishing threads or filaments, thermally stable threads or filaments and threads or filaments with increased degree of visual contrast.

EFFECT: enhanced protection from elevated temperatures and free flame.

10 cl, 1 dwg

 

The invention relates to the manufacture of textile surfaces with high visual contrast. More specifically, the invention relates to the formation of woven textiles, which can be used for the manufacture of items of special clothing with high visual contrast and providing reliable protection to the user from exposure to high temperatures, and from exposure to open flame.

In some areas of industrial production workers production may be exposed to high temperatures or open flame. In these conditions, these workers should wear appropriate protective clothing made of special textile materials. This protective clothing is subject to control by regulations designed to ensure that only one type of protection. In this regard, we can mention, in particular, the standard EN 531.

In other cases, special clothing, providing high visual contrast in order to give visual information about the presence in this place, the employees of the respective departments. Thus, to solve this problem, there are special fabric yellow fluorescing color, fabric orange fluorescing colors and fabrics red fluo esteroideo color. The use of special clothing of different colors can serve as a definite hallmark and can provide, for example, the discernment of relevant services belonging to different teams, at the construction site or within range of specialists in different fields.

For example, there are threads of yellow and orange thread, which, when entered in a special cloth, allow to maintain a high level of visual contrast. While criteria such visual contrast may be determined, for example, in the standard EN 471.

In many areas of human activity there is a need for workers wore special clothes, which, while providing protection against hazards associated with open flames, and would have high visual contrast. To solve this problem known fabric yellow, meeting the criteria of high visual contrast and protection from open flame. These fabrics obtained using threads, inherently resistant to high temperature and containing a yellow dye. In addition, these fabrics have relatively poor color stability.

This solution cannot provide tissue orange with h is some visual contrast and has protective properties with respect to high temperature. Not currently known threads of orange color, can give a special clothing sufficient protective properties in relation to the open fire.

From US 6009560 And well-known textile surface which has at least one side, with increased visual contrast and containing heat-resistant yarn or fiber. However, increased visual contrast makes known facing reflecting material which is a solid impermeable film, such as manufactured by the 3M company under the names "SCOTCHLITE" or "SCOTCHLITE II TRIPLE TRIM".

We have to admit that the problem of the manufacture of protective clothing, high visual contrast, in particular protective clothing with orange color with a high color stability and has protective properties against the hazards associated with open flames, still has no satisfactory solution.

The technical problem of this invention is to provide a solution to the aforementioned problems and to propose new textile surface, high visual contrast and providing protection from hazards associated with exposure to open flame, in particular new protective textile surface having a yellow color.

To solve this is a technical problem in accordance with this invention Features a textile surface, having at least one side, with increased visual contrast and containing heat-resistant yarn or fiber (type a), characterized in that the textile surface is obtained on the basis of at least two other types of threads or fibers, namely:

- thread or fiber type: filament or fiber damping, causing the release of gases in the case when they are exposed to open flame;

- filament or fiber type: filament or fiber with optical properties, in which the fabric is made only from such filaments or fibers, has a chromatic coordinates and reflectance, choose among:

- chromatic coordinates enclosed in the ellipse determined by the pairs of coordinates (X, Y), namely coordinates(0,610; 0,390), (0,544; 0,376), (0,579; 0,341), (0,655; 0,344) with reflectance β, the value of which exceeds 0,40;

- chromatic coordinates enclosed in the ellipse defined by the pairs of coordinates (X, Y), namely coordinates(0,387; 0,610), (0,356; 0,494), (0,398; 0,452), (0,460; 0,540) with reflectance β, the value of which exceeds 0,76.

This textile surface has at least one side with a high visual contrast and has a yellow or orange color. This high visual contrast is characterized by a chromatic coord. is Tami and reflectance in accordance with standard EN 471. The way of measuring these chromatic coordinates and reflectance are precisely defined in the normative document CIE 15:2:1968.

This surface can be obtained on the basis of the threads or fibers of different types, namely filaments or fibers of types a, b or C. If this thread or fiber is simultaneously the characteristics of the filaments or fibers of two types a and b, it emphasizes each of the above-mentioned characteristics.

This surface can be obtained, for example, by weaving or weaving with the provision of such a structure to be used in this case, the thread or fiber type were visible on the side with a high visual contrast. In accordance with the preferred method of implementation of the filament or fiber type And are located on this textile surface in two different directions, for example, in two directions textile.

In this case, the term “thread” can be understood solid multivalency object, the yarn of continuous fibers derived from fibers of the same type or from a mixture of fibers of different types, for example, on the basis of a dense mixture of fibers of type a and b or a mixture of fibers of type a or b with other fibers. You can also involve in this case a continuous filament obtained by connecting a number of filaments.

The filament or fiber type Aplauda heat-resistant. They represent a filament or fiber, for which thermal shrinkage and loss of mechanical properties is limited in a certain way after a short direct exposure to open flame (the duration of this exposure is about 3-4 seconds).

The filament or fiber type And are based on synthetic material, selected among polyamidimide, polyparaphenyleneterephtalamide, polymethacrylamide, polybenzimidazole (PBI) or polyparaphenylene-2, 6-benzo-bis-oxazole (PVO).

Thread type And can be formed by a simple mixture of fibers, dense mixtures thereof or a mixture of type core/shell (filament fibers with core). In this case we can talk about, for example, a mixture of fibers of polyamidimide and flame-retardant viscose fibers with the addition, if necessary, fibers paraphenylenediamine. Fiber can also consist of polymethylene isophthalamide fibers or of mixtures of these fibers, in particular fibers polyparaphenyleneterephtalamide.

The filament or fiber type To represent a filament or fiber damping, causing the selection of the gases involved in the process of combustion. Emitted when they are burned gas is the preferred way is a gas that is not oxygen. These strands or fibers provide containment of the combustion neighbors of Dominica or fibers. The above-mentioned emission usually occurs as a result of decomposition of the material forming the thread or fiber. This emission can also be achieved by introduction of appropriate additives or appropriate impregnation of these threads or fibers. The filament or fiber type are based modified acrylic fibers or fiber pre-oxidized polyacrylonitrile (PPAN).

You can also use composite filaments containing at least two twisted strands, one of these filaments is heat-resistant, and the other thread contains fiber damping, taken separately or in mixture with other fibers. You can also use the thread, which is not twisted and contains fiber damping, taken individually or in a mixture with other fibers.

As an example, mention can be made use of as threads damping, causing the release of gases:

- yarn of modified acrylic fibers or fiber type PPAN, the yarn of a dense mixture of fibers containing modified acrylic fibers or fiber type PPAN, and heat-resistant fiber selected among, for example, aramid fibers, fibers of polybenzimidazole, fibers VBOs, fibers based on phenolic resins, fiberglass, carbon fibers or melamine,

- twisted threads, which contains a single thread, set up shop data is private from the above-mentioned heat-resistant fibers, taken individually or in a mixture with other fibers, and filament formed from the above-described yarn.

As an example, yarn made of fibers containing modified acrylic fibers, mention may be made of fiber type Protex M or S, distributed in the market by the firm CAPeCA, fiber type Lufnen VF1 and VE1, and fiber type Super valzer.

The filament or fiber type In the preferred way are limiting oxygen index in excess of 30%.

The filament or fiber type are thread or fiber orange or yellow with optical properties that the fabric is made only from one of these threads or fibers will have chromatic coordinates and reflectance, chosen among the following values:

chromatic coordinates enclosed in the ellipse determined by the pairs of coordinates (X,Y), namely, coordinate(0,610; 0,390), (0,544; 0,376), (0,579; 0,341), (0,655; 0,344), with reflectance uh, having a value in excess of 0.40. In this case we are talking about threads or fibers fluorescing orange - chromatic coordinates enclosed in the ellipse determined by the pairs of coordinates (X,Y), namely coordinates(0,387; 0,610), (0,356; 0,494), (0,398; 0,452), (0,460; 0,540), with reflectance J3, having a value in excess of 0.16. In this case we are talking about threads or fibers fluorescense'or is newago color.

The filament or fiber type are based, for example, polyethylene terephthalate, as well as coloring pigment, entered before spinning and giving the filaments or fibers to the desired color.

This pigment is the preferred way is in orange color. In this case we can speak, for example, about orange threads, distributed in the market by the company Trevira under the trade name Texturgarn Tour 501 V.

In accordance with a specific implementation method of the present invention, this textile surface is obtained by weaving at least three families of threads. These families yarns define, at least partially, the structure and building the textile surface. Each collection thread may contain filaments or fibers of different types.

The first family of threads is called a family of the upper thread. This family of upper thread forms a textile or textile ducks, visible on the side of the fabric with high visual contrast. This family contains a filament or fiber type, but may also contain, if necessary, filament or fiber type and/or type C.

The second family of threads is called the family of lower yarns. This family of lower yarns formed of filaments parallel to the family of the top threads. These lower thread is not visible on the surface of the fabric with high quality is some visual contrast.

The third family of threads is called a family of transverse threads. This family of transverse yarns formed of fibers, perpendicular to the bottom threads. The threads of this family are woven together, at least with the family of lower yarns. This family of transverse threads can be woven together with other families of threads, for example, with a family of upper threads or other family filaments or fibers other than the family of upper thread and of the family of lower yarns.

In accordance with the preferred method of implementing the invention, at least one family selected among the family of lower yarns and family weft threads, contains a filament or fiber type, and the family of lower yarns and the family of transverse filaments contain, each, filament or fiber type A. Thus, one of these families, in accordance with this implementation contains both filaments or fibers of type a and the threads or fibers of type C. In this case we can talk about yarn, spun from the fibers of the a-type or fiber type C. This family can be formed, for example, a yarn of fibers of type a and type b, connected in a dense mixture. In accordance with the preferred method of implementation of the family of transverse yarns formed of fibers, spun from the fiber type and fiber type, connected tightly in the mixture, and the family of lower yarns formed of fibers, obtained on the basis of heat-resistant fibers, taken individually or in a mixture, for example, in a dense mixture with other fibers. These strands can, for example, be a dense mixture of aramid fibers and flame resistant fibers on the basis of viscose.

This textile surface can be obtained, for example, by weaving with double textile or with double textile weft. Such structures are well known. For textile double textile substrates family of the upper thread forms the upper base, the family of lower yarns forms a bottom base and a family of transverse yarns forming the textile weft. To create textile patterns with double weft family of the upper thread forms the upper textile weft, the family of lower yarns forms a lower textile ducks and a family of transverse yarns forming a textile basis of this tissue. In accordance with a specific mode of implementation, when provide the textile with double textile based and textile with double textile weft, the family of lower yarns does not appear on the face of this fabric with high visual contrast. On the other side of the surface of the fabric do not receive the family of the top threads. The two sides represent the textile weft threads, respectively, with the top n the authorities and with the lower threads. Weave textile can be a weave type of canvas, satin or twill. The preferred weave is a twill weave 4 type double textile fundamentals or double textile duck. The proportion by weight in this textile surface of the filaments or fibers of the type And preferably greater than 35%. The threads or fibers of the type cover at least 70% of the textile surface with high contrast.

The weight ratio of the filaments or fibers of the type In comparison with the threads or fibers of the type manufactured, for example, on the basis of polyethylene terephthalate, the preferred image has a value in the range of from 25/75 to 75/25.

In accordance with the method of implementation of the present invention, all the threads from the family of transverse filaments are filaments obtained by connecting thread type and thread type, or by a dense mixture of fiber type and fiber type Century.

In accordance with the preferred method of implementing this invention, all the threads of a family of lower yarns are yarns of type A.

Thread a family of upper threads cover preferably at least 70% of the upper side of this textile surface.

Other details and advantages of the invention will be better understood when considering at what can be found below and non-limiting example of implementation, illustrated in the drawing.

For the implementation of the present invention produces a fabric in accordance with the known technology of textile with double textile basis and using a twill weave 4. Use the following thread:

the upper base (1): yarn of polyester staple fibres, dyed in the mass in the orange fluorescence color and distributed in the market by the company Trevira under the name Textilgarn Tour 501 V dtex 167/48*1,

the lower base (2): yarn of fibers, which is a thick mixture of aramid (polyamide-imide)/viscose FR in a weight ratio of 70/30,

- ducks (3): yarn of fibers, which is a thick mixture of aramid (polyamide-imide)/PROTEX (fiber blanking,

- distributed in the market by the firm KANECA, in a weight ratio 70/30).

The figure schematically shows the structure thus obtained fabric.

This fabric was subjected to the tests defined in the regulations EN 471 and EN 531. This fabric meets these standards with the classification A, Bl, Cl, E1 to standard EN 531.

1. Textile surface having at least one side having high visual contrast, and containing heat-resistant yarn or fiber (type a), characterized in that the textile surface is obtained on the basis of at least two other types neath the th or fibers, namely:

- thread or fiber type: filament or fiber damping, causing the release of gases in the case when they are exposed to open flame;

- filament or fiber type: filament or fiber with optical properties, in which the fabric is made only from such filaments or fibers, has a chromatic coordinates and reflectance, choose among:

- chromatic coordinates enclosed in the ellipse determined by the pairs of coordinates (X, Y), namely, coordinate(0,610; 0,390), (0,544; 0,376), (0,579; 0,341), (0,655; 0,344) with reflectance β, the value of which exceeds 0,40;

- chromatic coordinates enclosed in the ellipse defined by the pairs of coordinates (X, Y), namely, coordinate(0,387; 0,610), (0,356; 0,494), (0,398; 0,452), (0,460; 0,540) with reflectance β, the value of which exceeds 0,76.

2. Textile surface according to claim 1, characterized in that it is obtained by weaving at least three families of threads, namely:

family, the so-called upper yarns forming a textile or textile ducks, visible on the side of this fabric with high visual contrast,

family, the so-called bottom of the threads parallel to the family of the upper thread and not visible on the side of this fabric with high visual contrast,

- the family of so-called transverse filaments perpendicular to the family of lower yarns and woven together with the family of lower yarns

- at least one family chosen from the family of lower yarns and family of transverse yarns containing filaments or fiber type,

family of transverse filaments and the family of lower yarns containing filaments or fibers of a type

- the family of upper yarn containing filaments or fibers of the type and, if necessary, filament or fiber types a or C.

3. Textile surface according to claim 2, characterized in that the textile surface is obtained by weaving a double textile fundamentals or double textile weft, and the family of the upper thread forms the upper textile basis for products with dual basis or textile upper ducks for products with double weft, the family of lower yarns forms a lower textile basis for products with dual base or bottom of textile ducks for products with double weft, and the family of transverse yarns forming the textile weft for products with double textile or a textile basis for products with double textile weft.

4. Textile surface according to claim 2 or 3, characterized in that at least one family of fibers, selected from the family of lower yarns and family poperen the x threads contains yarn, spun from the fiber type and fiber type Century.

5. Textile surface according to claim 2 or 3, characterized in that the family of transverse yarns formed of fibers, spun from the fiber type and fiber type, located in a dense mix, and also that the family of lower yarns formed of fibers, spun from fibers of type a, taken individually or in a mixture with other fibers.

6. Textile surface according to any one of the preceding paragraphs, characterized in that the filament or fiber type are based modified acrylic fibers or fiber pre-oxidized polyacrylonitrile.

7. Textile surface according to any one of the preceding paragraphs, characterized in that the filament or fiber type And are based on synthetic material, selected among polyamidimide, polyparaphenyleneterephtalamide, polymethacrylamide, polybenzimidazole or polyparaphenylene-2,6-benzo-bis-oxazole.

8. Textile surface according to any one of the preceding paragraphs, characterized in that the filaments or fibers of the type are based on polyethylene terephthalate, and also contain pigments, entered before spinning and giving them the desired color.

9. Textile surface according to any one of the preceding paragraphs, characterized in that the filaments or fibers of the type cover at least 70% of the textile surface with high visual contrast.

10. Textile surface according to any one of the preceding paragraphs, characterized in that the filaments or fibers of the type represent less than 35% by weight of this textile surface.



 

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FIELD: textile industry, in particular, providing textile surface with at least one side having increased degree of visual contrast.

SUBSTANCE: textile surface is produced on the basis of threads or filaments of at least three types, namely, extinguishing threads or filaments, thermally stable threads or filaments and threads or filaments with increased degree of visual contrast.

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10 cl, 1 dwg

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