Technical fabric strip

 

(57) Abstract:

The invention relates to the field of the textile industry and for the technical fabric strip, formed by the weave woven synthetic core yarn and flat fibrillated weft threads. The structure of the fabric strip belongs 7,5 - 8,5 phase structure, while the main thread is executed fibrillated with a coefficient of twist of 4.6 to 6.1, with respect to technological densities in the warp and weft is of 1.56 - 1.95, while the coupling coefficient of the tissue strip is 5.3 - 7,0, and its surface porosity is in the range of 1.6-9.1 per cent. This gasket has a high resistance and low permeability. 1 C.p. f-crystals, 1 table.

The invention relates to the textile industry, in particular the production of technical fabric strips used in the sealing rubber fabric and other rubber pieces.

The basic technical requirements of fabric strips for sealing raw rubber and rubber-fabric blanks are low permeability (less than 80 DM3/m2(C) excluding active contact with air and oxidation powerhouse processing Department of the fabric strip from the surface of the raw rubber without damaging it and dimensional stability of a gasket. The shape stability of the strip, characterized by the surface density and the degree of sustainability of the warp and weft, determines its bending stiffness. Optimal bending stiffness of the strip eliminates the formation of embossed marks on the surface of the wrap rubberized textile materials.

Known fabric strip by A. S. USSR 1030434, D 03 D 15/00. A fabric strip is formed by interweaving the main woven synthetic mnogoelementnykh (complex) yarns and weft monofilament synthetic yarns. The surface porosity of the famous strip of 28.5%, the coefficient of coupling equal to 3.5, the hardness does not exceed 15,8 GSM, the permeability - 480 DM3/m2C. the Disadvantages of the above gaskets are high surface porosity and due to its high permeability and low bending stiffness.

Closest to the technical essence and the achieved result is a technical fabric strip formed by a plain weave synthetic mnogoelementnykh twisted core yarn and synthetic fibrillated flat weft threads. Surface porosity strip Ave is in the 15/34].

This fabric strip having a permeability 91-135 DM3/m2c, does not ensure the absence of air diffusion to the surface of rubberized fabric, which leads to oxidation and artificial aging of rubber. In addition, the presence mnogoelementnykh yarns in the warp strip does not provide sufficient rigidity of the latter. This reduces the resistance of the strip to repeated deformations.

The technical result of the use of the present invention is to reduce the permeability and increase the sustainability of the strip to repeated deformations.

This problem is solved by the fact that the structure of the fabric strip belongs 7,5-8,5 phase structure made of plain weave woven split with a coefficient of twist of 4.6 to 6.1 fibrillated main thread and flat fibrillated weft threads. The coupling coefficient of the tissue strip is 5.3 - 7,0, surface porosity is in the range of 1.6-9.1 percent, and the coefficient of static friction is equal to 2,6 - 2,8, breathability 69 -90 DM3/m2C.

If you increase the value of the coefficient of coupling strip above the values specified in the claims, and the decrease in value is s thread there is an increase of shape and stiffness of the strip when the bending. This leads to reduced resistance to repeated strains, i.e., wear resistance strip, and complicates the technology of molding roll.

By reducing the coefficient of coupling and increase the surface porosity of the strip, while reducing the coefficient of twist fibrillated main threads beyond the values of the claims, a decrease of stiffness in bending and increase the total surface porosity of the strip. This leads to an increase in the permeability of the strip, resulting in an increase in the diffusion of air to the surface of rubberized fabric blanks, leading to oxidation, i.e., rapid aging of raw rubber blanks.

These distinctive features, each separately and all together, and are essential aimed at solving the problem.

To confirm the technical result of the invention were experimental samples of tissue linings of the proposed design. Main technical characteristics of the proposed structures fabric strips are summarized in table. Data ostroy porosity, air permeability, adhesion to raw rubber that provides optimum processing of workpieces containing crude rubber, producing quality products and increase service life of the fabric strip.

Samples of fabric strips, corresponding to the formula of the invention, with a positive result tested at the Yaroslavl and Moscow tyre plant. Test results fabric strip recommended for commercial use as cushioning of the canvas when the sealing, transportation, storage and processing of rubber and rubber pieces of raw rubber.

1. Technical fabric strip formed weave woven synthetic core yarn and flat fibrillated weft threads, characterized in that the structure of the fabric strip belongs 7,5 - 8,5 phase structure, while the main thread is executed fibrillated with a coefficient of twist of 4.6 to 6.1, with respect to technological densities in the warp and weft is of 1.56 - 1.95, while the coupling coefficient of the tissue strip is 5.3 - 7,0, and its surface porosity is in the range of 1.6 - 9.1 per cent.

2. Technical fabric strip under item 1, call

 

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