CS233227B1 - The method of chemically reinforcing the back of the hair fabrics - Google Patents

Abstract

Reinforcement of the reverse side of textiles with a combed face, which are used as linings for warm winter shoes, with polyethylene in the form of a fleece, the most suitable with an area weight of 100 g/m, which is first preheated to a temperature of 100 to 110 °C, then melted into a molten state at a temperature of 160 to 170 °C and then pressurized by shaping the rolling hidden surface, it is woven into interwoven prlestors of woven, plaited or woven textlllg hair-like, which is also preheated to a temperature in the range of 100 to 110 °C before consolidation. Perfect reinforcement of the structure of hair textiles of woven, knitted and non-woven designs is achieved when checking the textile character of the reverse side of the fabric, and at the same time savings are achieved on insufficient raw materials, such as the previously used cotton textiles and glue on beige natural rubber, and it is easy to manpuléce with a reinforcing bar.

Description

233227 2

BACKGROUND OF THE INVENTION The present invention relates to a method of chemically reinforcing the reverse side of a hairline, i.e., a faced fabric intended for use with a winter shoe lining wherein the fabric is applied to the fabric in a molten state.

Footwear lining, such as the footwear upper, is formed by joining individual surface sections with a sik-sak suture to a single-needle or a sik-sak. double-shaft machines. Attaching the upper to the hoof, when the upper takes on a spatial shape, results in a considerable pulling of the sewn joints, as well as a basic lining of the lining fabric in close proximity. If the stress is less than the strength of the sewn joint, but greater than the strength of the base bond of the fabric, release of the base bond, i.e., tear-uptile of the adjacent joint occurs. This problem is solved by reinforcing the base bond to a textile-in-the-bond strength level. x

Up to now, the reinforcement of the pile backbone of the pile fabric has been achieved by lightweight fabrics in linen weave using water or solution adhesives. When using dispersion-based water-based adhesives! the plastomers, or the elastomers, increase the hardness of the lining fabric, the loss of the textile character, resulting in increased processing effort in the lining of the footwear production. The use of solution adhesives increases the amount of work required, as it is necessary to apply a glue on both the molino and the back of the pile fabric. The method requires the use of scarce cotton fabric as well as adhesives based on scarce natural rubber.

Another method of reinforcing the pile backbone binding is by applying aqueous dispersions of polymers to the back of the pile fabric by spraying or shedding. A disadvantage of this method is that when applying a smaller layer of polymer dispersion, the desired structure strength of the woven fabrics is not achieved. While applying the larger polymer dispersion dispersion layer, the desired reinforcement of the structure is achieved, but the softness and textile feel of the warm warm fabric is lost, thereby deteriorating its workability in the shoe manufacturing. Also known from the Czechoslovak copyright certificate No. 162 843 is the method of manufacture in which the textile substrate is applied in the form of a melt of polystyrene in the pre-heating. However, their build-up is allowed to solidify on the surface of the applied textile backing, so that for the purposes of linings reinforced in their own structure, this method is not practical.

The described drawbacks are eliminated by the method of chemically reinforcing the reverse side of the hair fabrics with the brushed face. fabrics intended for use with winter shoe lining, in which the fabric is applied to fabrics in the molten state of which it is applied. The present invention is based on the fact that polyethylene is used as a reinforcing material during the polyethylene wound, preferably at a weight of 100 g / m 2, which is first preheated together with the pile fabric to a temperature of 100 to 110 ° C, followed by of the molten state at a temperature of 160 DEG-170 DEG C. and then pressed into the inter-fibrous spaces of the base woven, lined, or nonwoven hair fabric by the pressure-exerted curved surface.

Advantages of the method according to the invention include, in particular, the perfect reinforcement of the bonded lining material which prevents the release of the base bond under the stress of the sewn joints. Polyethylene is firmly anchored in the interlayer of the bonding base, so the warm hair lining, understood as the final product in footwear, is of a higher quality.

In particular, the handling of the polyethylene wound reinforcing polyethylene is simpler and easier to handle than, for example, the handling of resilient polystyrene according to AO 162 843, starting from a granulate requiring special machinery. Last but not least, the inventive method saves the cotton fabric as well as the natural rubber based adhesive, both of which are scarce.

Claims (1)

3 233227 Reinforcing the back of the pile materials according to the invention is carried out, for example, on a non-stick coating machine, such that the polyethylene web, for example, having a basis weight of 100 g / m 2, is pre-heated on the first two rollers of the coating machine together with the pile fabric. , the coating rollers are melted and transferred in the molten state and pressed into the structure of the back side of the warm pile fabric, where it solidifies upon cooling and fills the structure while retaining the strong nature of the pile fabric. o Good reinforcement is achieved by a surface weight of 100 g / m polyethylene rune arriving through the machine. It allows to strengthen woven, knitted and nonwoven hair fabrics. A polyethylene web is, for example, a spunbonded web, the PETEX trade name, with a weight of 100 g / m 2. Advantages of the invention are better excluded from the following examples of a method for producing a chemically reinforced pile liner according to the invention, which is intended, in particular, for footwear and lining material for winter footwear, which may be used, for example, in the textile industry and wherever textile fabric reinforcement is needed. EXAMPLE 1 [0007] MERINO textiles and as the top polyethylene webs of PETEX 100 g / m < 2 > On the first two-cylinder machines, heated to 130 ° C, both materials are preheated. On the third cylinder, heated to 170 ° C, Petex is melted. The reverse side of the preheated MERINA is compressed by the pneumatic cylinder to the surface of the third cylinder of the machine from which the molten polyethylene is removed, which at the outlet of the machine cools in the basic bond of the MERINO material. Compressing the calenders with cold presses the surface of the reinforced back of MERINA. EXAMPLE 2 The needle punched fabric JUDITAa as the top material Petex 100 g / m < 2 > The other process, including the temperatures used, is the same as Example 1. OBJECT OF THE INVENTION A method of chemically reinforcing the backside of a hairline, that is, a facial lining intended for lining winter footwear, in which the bonding substance is applied to the fabric in a molten state characterized by that the sapolyethylene in the form of a fleece, preferably with a basis weight of 100 g / m, is firstly preheated as well as a woven fabric at a temperature of 100 to 110 ° C, subsequently melted into the interlayer to be subjected to a temperature of 160 to 170 ° C and then to a pressurized curvilinear surface. a woven, knitted, or non-woven fabric compartment.