TW201512485A - Preparation process of elastic jacquard three-layer mesh cloth - Google Patents

Abstract

Disclosed is a preparation process of elastic jacquard three-layer mesh cloth. The preparation process comprises the following steps: (1) machinery wrap yarn preparation: rotating an externally-wrapped fiber filament and winding the externally-wrapped fiber filament on core silk spandex drafted at a constant speed; (2) three-layer mesh cloth preparation: weaving the machinery wrap yarn, dacron or chinlon monofilament, dacron or polymide fabric and spandex into three-layer mesh cloth in a warp knitting manner, so that the facial material of the three-layer mesh cloth is machinery wrap yarn, the middle layer material is dacron or chinlon monofilament, and the bottom material is dacron or polyamide fabric and spandex; and (3) surface jacquard: forming a design pattern in the surface part of the three-layer mesh cloth by using the jacquard process.

Description

Method for preparing elastic jacquard three-layer mesh cloth

The invention relates to an elastic jacquard three-layer mesh cloth, in particular to a preparation method of an elastic jacquard three-layer mesh cloth.

The invention relates to an elastic jacquard three-layer mesh cloth, in particular to a preparation method of an elastic jacquard three-layer mesh cloth.

SUMMARY OF THE INVENTION It is an object of the invention to provide a method for preparing a three-layer mesh of elastic jacquard fabric which is smooth and delicate.

In order to achieve the above object, the technical solution adopted by the present invention is: a method for preparing an elastic jacquard three-layer mesh, comprising the following steps: a) mechanical covering yarn preparation: rotating and winding the outer fiber filaments in a uniform draft b) three-layer mesh preparation: the mechanical covering yarn, polyester or nylon monofilament, polyester or nylon fiber and spandex are woven into a three-layer mesh by warp knitting, so that the face of the three-layer mesh The material is mechanically covered yarn, the middle layer is made of polyester or nylon monofilament, the bottom material is polyester or nylon fiber and spandex; c) The facial jacquard: the design pattern is presented on the face of the three-layer mesh by jacquard.

Wherein, the process of preparing the mechanical covering yarn in the step a) controls the thickness of the mechanical covering yarn to be 50D-150D polyester, nylon fiber or composite fiber (hemp gray) coated with 40D spandex, 70D spandex, 100D spandex.

Wherein, step b) is woven into a three-layer mesh fabric by using a warp knitting machine, and the warp knitting yarn is not adjusted by the spring piece. According to the characteristics of the raw material of the mechanical covering yarn, the fabric fabric does not pass the spring sheet adjusting machine, and the weaving efficiency is improved, and the cloth surface is flat/fine.

Among them, the following steps are also included: d) Mesh dyeing: d1) The elastic jacquard three-layer mesh cloth to be dyed is slackened at a temperature of 70-85 ° C to adjust the cloth tension; d2) predetermined: at a temperature of 185 ° C - 200 ° C The fabric is longitudinally micro-shaped, the horizontal width is set according to the pattern, and the longitudinal micro-pull is 1.5-2cm smaller than the finished pattern; d3) dyeing: dyeing the predetermined fabric according to the fabric fiber Control dyeing temperature, dyeing temperature rise and fall is less than or equal to 1 degree / minute; d4) Set: The size of the dyed fabric is shaped at 180 °C, the horizontal width is set according to the standard size setting, and the overall pattern is aligned. The size control is within 0.3-0.5 CM. In step d1), the cloth traveling speed is controlled to be 10Y/min; in step d2), the cloth traveling speed is controlled to be 5-8Y/min; in step d3), the cloth traveling speed is controlled to be 250-300Y/min; in step d4), the cloth traveling is controlled. The speed is 5-8Y/min.

The beneficial effects of the present invention are: the existing upper structure, the components are generally divided into a front sleeve, a back sleeve, a toe, a waist, a shoe eye, a tongue, etc., these pieces are usually separately manufactured, according to each part body The size of the cutter is cut and cut, and then stitched together. If the pattern needs to be attached to different parts of the upper, it must be printed or high-frequency pressed to form a complete upper. If the elastic upper is to be produced, it must be stitched by elastic parts. It is more difficult to curl, the size is not well controlled, the production process is numerous, the production efficiency is low, and the cost is high. The fabric of the invention mainly selects raw materials, on-machine process, drawing, weaving, relaxation pre-shrinking, predetermined, overflow dyeing, and forming; according to the size of the shoe type, the finished product is shaped according to the size of the shoe, and the process technology is woven last time. The shoe type not only protects the environment, but also simplifies the upper production process, improves production efficiency and reduces production costs.

The details of the technical contents, structural features, and objects and effects of the present invention will be described in detail below with reference to the embodiments.

The invention provides a method for preparing an elastic jacquard three-layer mesh, comprising the following steps:

a) Preparation of mechanical coated yarn: Rotating and wrapping the outer fiber filament on the filament yarn which is uniformly drawn; preparing the mechanical covering yarn program to control the thickness of the mechanical covering yarn is 50D-150D polyester, nylon fiber or composite Fiber (hemp ash) coated with 40D spandex, 70D spandex, 100D spandex. b) Preparation of three-layer mesh: mechanically covered yarn, polyester or nylon monofilament, polyester or nylon fiber and spandex are woven into three layers of mesh through warp knitting, so that the surface material of the three-layer mesh is mechanically covered yarn The middle layer is made of polyester or nylon monofilament, and the bottom material is polyester or nylon fiber and spandex. The step is to weave a three-layer mesh with a warp knitting machine. The warp yarn does not pass the spring piece to adjust the tension; c) the facial jacquard : Design a pattern on the face of a three-layer mesh by jacquard.

The invention adopts the new technical material wrapping yarn-mechanical covering yarn, and continuously rotates the outer fiber filament and wraps it on the core silk spandex which is uniformly drawn, and the pre-pulling ratio of the spandex in the spinning process is a Important process parameters, which affect the elasticity of the covered yarn and the fabric, and affect the strength of the covered yarn, the unevenness of the strip and the creep performance. The pre-draw ratio is small, and the elastic fabric fabric can not be fully utilized. The advantage is that it is difficult to draw high yarn, and it is easy to cause broken yarn, and the quality of the product will decrease.

At the same time, the invention has also been adjusted in terms of cost. This elastic fabric, 50D-150D (polyester/brocade or composite fiber) covered yarn + intermediate layer (polyester/brocade monofilament) + bottom ordinary (polyester/brocade) Fiber + spandex production.

The main features of the present invention: due to the density problem of the device itself (number of stitches), it is impossible to produce a fine cloth surface like the weft knitting machine, and the original equipment must be adjusted according to the elastic shrinkage of the raw material and the process of weaving. The spring piece adjusts the tension. According to the characteristics of the raw material of the mechanical covering yarn, the machine fabric process does not pass the spring piece adjusting machine, and the weaving efficiency is improved, and the cloth surface is flat/fine.

The elastic jacquard three-layer mesh of the invention further comprises a dyeing process step:

D1) Relaxation and refining: The elastic jacquard three-layer mesh cloth prepared for dyeing is relaxed at a temperature of 70-85 ° C, and refined by water washing. The washing liquid contains 3% soda ash, 3% emulsifier, 0.5% glacial acetic acid, and is adjusted at the same time. The PH value is between 6-7, the control cloth travel speed is 10Y/min, the water absorption is 30kg pressure, the cloth tension is adjusted, the energy saving is 30% compared with the previous dyeing cylinder refining process, and the cleanness of the grey cloth is improved to reduce the oil content;

D2) Predetermined: After the cloth head of the fabric is loosened, the cloth is cut and the guide cloth is connected. The length of the guide cloth is more than 10 meters. After the cloth is trimmed, the fabric is longitudinally micro-shaped at a temperature of 185 °C-200 °C. According to the pattern setting standard door width, the longitudinal micro-pull to the flower pattern is 1.5-2cm smaller than the finished pattern pattern; the equipment tension is less than 1kg, and the control cloth travel speed is 5-8Y/min, the step of the invention can not be reduced (reduced Fine lines will appear, and wrinkles due to fine lines will appear easily after entering the cylinder. Therefore, it can only be micro-pulled (the longitudinal dimension of the grey fabric must be budgeted (the size of the original pattern is 1-1.5CM). After slack refining, the longitudinal dimension (small 1.5-2.5CM), the longitudinal dimension after micro-tensioning (1-2CM smaller than the original pattern), the longitudinal dimension (0.5-1CM) produced after the dyeing into the cylinder , the timing is in accordance with the original pattern size, must be arranged according to the size;

D3) Dyeing: dyeing cylinder with large nozzle, bath ratio 1:15, PH value 4-5, spray pressure 33PA, dyeing and keeping the predetermined fabric for 40-60 minutes, controlling the cloth traveling speed at 250-300Y/min, dyeing Temperature: nylon 100-105 ° C, polyester 130-135 ° C, polyester brocade 120 ° C, dyeing temperature rise and fall is less than or equal to 1 degree / minute, the speed can not be too fast, the temperature depends on the fiber, the nylon blending temperature should not exceed 120 degrees Dyeing, otherwise it will be easy to appear cylinder wrinkles, anti-wrinkle agent must be added during the dyeing process;

D1) Set: at a temperature of 180 ° C, a speed of 5-8Y, a wind of 1800 rpm, a tension of 1 kg, an upwind of 80%, a downwind of 50% relative to the dyed fabric for size setting, and a lateral width of the horizontal width according to the pattern. Stereotype, the overall pattern alignment size is controlled within 0.3-0.5CM. Through the selection of material weaving, special dyeing and finishing process (relaxed refining - predetermined - dyeing - forming), used in the production of high-grade jacquard elastic three-layer fabric, improved the limitations of the three-layer fabric in terms of elasticity, with a soft touch and elasticity, The cloth surface is exquisite and has no squeezing effect on the toes. The shoes made by the invention give a feeling of easy and unconstrained feeling, and the process technology is woven into a shoe type last time, which not only protects the environment, but also simplifies the production process of the upper and improves the production. Efficiency, reducing production costs, giving people a new green and healthy comfort.

The above is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformation made by using the content of the specification of the present invention, or directly or indirectly applied in other related technical fields, The same is included in the scope of patent protection of the present invention.

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Claims (5)

A method for preparing an elastic jacquard three-layer mesh, the method steps comprising: a) preparing a mechanical covering yarn: rotating and wrapping the outer fiber filament on a uniformly drawn core silk spandex; b) preparing a three-layer mesh : Mechanically covered yarn, polyester or nylon monofilament, polyester or nylon fiber and spandex are woven into a three-layer mesh by warp knitting, so that the surface material of the three-layer mesh is mechanically covered yarn, and the middle layer is made of polyester or Nylon monofilament, the bottom material is polyester or nylon fiber and spandex; c) Facial jacquard: design pattern on the face of the three-layer mesh by jacquard. The method for preparing an elastic jacquard three-layer mesh according to claim 1, wherein the step of preparing the mechanical covering yarn in the step a) controls the thickness of the mechanical covering yarn to be 50D-150D polyester, nylon fiber or composite fiber (hemp gray). ) coated with 40D spandex, 70D spandex, 100D spandex. The method for preparing an elastic jacquard three-layer mesh according to claim 1, wherein the step b) is woven into a three-layer mesh by a warp knitting machine, and the warp yarn is adjusted by the warp yarn without adjusting the tension. The method for preparing an elastic jacquard three-layer mesh according to claim 1, further comprising the following steps: d) mesh dyeing: d1) relaxing the elastic jacquard three-layer mesh prepared for dyeing at a temperature of 70-85 ° C for relaxation , adjust the cloth tension; d2) predetermined: the fabric is longitudinally micro-drawn at a temperature of 185 ° C -200 ° C, the longitudinal micro-pull to the pattern is 1.5-2 cm smaller than the finished pattern; d3) dyeing: the predetermined fabric is Dyeing, control dyeing temperature according to fabric fiber, dyeing temperature rise and fall is less than or equal to 1 degree/minute; d4) Set: The dyed fabric is dimensioned at a temperature of 180 °C, and the overall pattern alignment size is controlled at 0.3-0.5CM within. The method for preparing an elastic jacquard three-layer mesh according to claim 4, wherein the traveling speed of the cloth is controlled to be 10Y/min in step d1); the traveling speed of the cloth is controlled to be 5-8Y/min in step d2); step d3) The medium control cloth travel speed is 250-300Y/min; in step d4), the cloth travel speed is controlled at 5-8Y/min.