CN102677262B - A kind of pure copper ammonia jacquard fabric and production method thereof - Google Patents

Abstract

The invention discloses pure-copper-ammonia jacquard fabric consisting of warps and wefts in a woven manner. Both the warps and the wefts are 75-150D (denier) pure-copper-ammonia filaments. The warp-wise density ranges from 429/10cm to 600/10cm, the weft-wise density ranges from 310/10cm to 429/10cm. Meanwhile, the invention further discloses a production method of the pure-copper-ammonia jacquard fabric. The production method includes the following steps of firstly, selecting the copper ammonia filaments as raw materials; secondly, beaming until the thickness of copper ammonia filaments wound on a beaming shaft is not more than 5mm; thirdly, pulping and keeping the speed of a yarn guide roll of a pulping machine lower than the speed of a pulping roll during pulping; fourthly, shaft integrating; fifthly, threading harness wires and inserting reed; and sixthly, weaving on the machine. Compared with the prior art, the pure-copper-ammonia jacquard fabric is soft and smooth in touch, low in cost and breakage and higher in integral strength than the like products and meets the requirement of environment friendliness. The production method is simple to operate, effectively solves the problem of easiness in copper ammonia fibers during production and reduces production difficulty of the pure-copper-ammonia jacquard fabric.

Description

A kind of pure copper ammonia jacquard fabric and production method thereof

technical field

The invention relates to a textile fabric, in particular to a pure copper ammonia jacquard fabric, and also relates to a production method of the fabric.

Background technique

Cupro fiber is a kind of regenerated cellulose fiber. It is made by dissolving natural cellulose raw materials such as cotton linters in a concentrated ammonia solution of copper hydroxide or alkaline copper salt to prepare a spinning solution. Cellulose molecular chemicals are decomposed to regenerate cellulose, and the resulting hydrated cellulose is post-processed to obtain cupro ammonia fiber. The cross-section of cupro fiber is round, without sheath-core structure, and the monofilament produced is relatively thin, so the cupro fiber fabric is soft to the touch, soft in luster, has a real silk feel, and has good hygroscopicity. However, its wet strength is low and its wet elongation is high, so it is difficult to process the cupro fabric, and the cupro fiber is easy to break during the weaving process.

Therefore, at present, when cupro fiber is used for fabric weaving, it is usually blended with other fibers, such as the Chinese invention patent with application number 200910145158.7, which discloses the dyeing method of wool/cupro fiber blended fabric; as another application number is 200910049036.8 The Chinese invention patent disclosed a mulberry silk and cupro ammonia silk interwoven fabric and its weaving method.

Certainly also have patent to disclose the production method of pure cupro-ammonia fabric, the data of this aspect can refer to as the Chinese invention patent that application number is 200910186478.7, and it discloses a kind of manufacture method of cupro-ammonia fabric. However, the main improvement in this patent lies in the dyeing and finishing part of the pure cupro fabric, but in fact, when the cupro fiber is woven into gray cloth, due to its integrity, the strength of the pure cupro fabric has been affected by its characteristics. smaller. Due to the characteristics of low wet strength and high wet elongation of cupro fiber, the difficulty in the production process of pure cupro fabric lies in its weaving process, which is not mentioned in this patent application.

Contents of the invention

Aiming at the deficiencies in the prior art, the invention provides a pure cupro ammonia jacquard fabric with low cost, high strength and low end-break rate in the production process.

In order to solve the above technical problems, the present invention is solved by the following technical solutions: a pure cupro jacquard fabric, which is woven from warp yarns and weft yarns, is characterized in that: the warp yarns and the weft yarns are both 75D to 150D cupro ammonia Filament; among them, the warp direction density is: 429 threads/10cm to 600 threads/10cm, and the weft direction density is: 310 threads/10cm to 429 threads/10cm. There is a pattern on the fabric, and the warp direction of the pattern is The density is 429/10cm, and the weft density is 310/10cm.

The present invention also provides an easy-to-operate method for producing the pure cupro ammonia jacquard fabric. According to the method, the cupro ammonia fiber is not easy to break during the production process, which ensures the overall strength and quality of the woven pure cupro ammonia fabric. In order to solve the above-mentioned technical problems, the present invention is solved by the following technical solutions: a production method of the above-mentioned cupro ammonia jacquard fabric, which is characterized in that it includes the following steps: 1) selecting 75D to 150D cupro ammonia filaments as raw materials; 2) Warping, using a batch warping machine for warping, the unwinding tension during warping is greater than the winding tension, after the warping is completed, the difference in thickness of the copper ammonia wires wound around the warping shaft is not more than 5mm; 3 ) sizing, the speed of the drawing roller of the sizing machine in the sizing process should be lower than the speed of the sizing roller, and the speed of the drawing roller is 90-110m/min; 4) Coaxial; 5) According to the warp direction of the fabric Density and weft density, as well as the warp density and weft density required for the position of the pattern, are threaded and reeded; 6) Weaving on the machine. The invention mainly achieves the purpose of reducing the breakage of the cupro ammonia filament by adjusting the unwinding tension and the winding tension in the warping link and the speed of the drawing roller and the sizing roller in the sizing link. In fact, the breakage of cupro ammonia filaments is mainly concentrated in the sizing process. The reason is that the wet strength of cupro ammonia filaments is low and the wet elongation is large after absorbing moisture, especially if the filaments at various positions in the process of sizing The different lengths lead to the inconsistent tension of each wire and cause the cupro ammonia filament to break. If the winding tension is greater than the unwinding tension during warping, once a deviation occurs, the thickness of the silk thread on the warping beam will be different at different positions. Due to the large winding tension, the cupro ammonia filaments will collapse tightly, so in Where the thickness is large, the number of copper ammonia filaments winding will increase, and the thickness will become larger and larger. When sizing, the length of the cupro ammonia filaments released at this position is longer than other places, resulting in The different lengths of the cupro filaments at various positions lead to inconsistent tensions on the cupro filaments, resulting in breakage of the cupro filaments. In the present invention, the unwinding tension is greater than the winding tension during warping, so that the cupro filaments have the ability to self-regulate when they are wound on the warping beam, and the thickness of the cupro filaments winding at each position on the warping beam will not appear. Inconsistency ensures that the difference in thickness of the cupro filaments wound around the warping beam after warping is not more than 5mm, so as to avoid the phenomenon that the cupro filaments are broken due to different lengths during sizing. On the other hand, when sizing, since the cupro filaments absorb moisture and prolong, if the speed of the drawing roller is greater than or equal to the speed of the sizing roller, more and more cupro filaments will stay in the slurry, and the It is easy to cause the breakage of the cupro ammonia filament. Therefore, the present invention sets the speed of the drawing roller less than the speed of the sizing roller, so that the cupro ammonia filaments passing through the slurry can leave the slurry in time, avoiding the breakage of the cupro ammonia filaments. In the actual operation process, the drawing rollers The speed needs to be determined according to the speed of the sizing roller and the moisture absorption elongation of the cupro filament.

As a preference, the formulation of the slurry used in the above step 3 is: by weight percentage, the main ingredient is 98%-99% 0588PVA, and the auxiliary material is 2%-1% antistatic agent.

As a preference, the number of warping machines in the above step 2 is 720-1200.

Preferably, the loom used for weaving in the above step 6 is an electronic dobby shuttleless loom, and the width of the shuttleless loom is 55-57 inches.

Preferably, the rotational speed of the above-mentioned shuttleless loom is 500-650 rpm.

Compared with the prior art, the beneficial effect of the present invention is that the pure cupro jacquard fabric has a soft and smooth touch, is low in cost, meets the requirements of green environmental protection, has a low end-breakage rate, and has a higher overall strength than similar products. The method is simple to operate, effectively solves the problem that the cupro ammonia fiber is easily broken during the production process, and reduces the production difficulty of the pure cupro ammonia fabric.

Detailed ways

Below in conjunction with specific embodiment the present invention is described in further detail: embodiment 1.

A pure cupro jacquard fabric, woven from warp yarns and weft yarns, characterized in that: the warp yarns and the weft yarns are both 75D to 150D cupro ammonia filaments; wherein, the warp direction density is: 429 / 10cm to 600 Roots/10cm, weft density: 310 to 429/10cm. There is a pattern on the fabric. The warp density of the pattern is 429/10cm, and the weft density is 310/10cm.

Example 2.

A method for producing pure cupro ammonia jacquard fabric, comprising the following steps: 1) selecting 75D to 150D cupro ammonia filaments as raw materials; 2) warping, using batch warping machines for warping, and the unwinding tension during warping greater than the winding tension, the difference in thickness of the copper ammonia wires wound on the warping beam after the warping is completed is not more than 5mm; The speed of the roller, the speed of the yarn drawing roller is 90m/min; 4) Coaxial; 6) weaving on the upper machine, the loom used for weaving is an electronic dobby shuttleless loom, the width of the shuttleless loom is 55-57 inches, and its rotating speed is 650 rpm.

Wherein, the formula of the slurry used in the above step 3 is: by weight percentage, the main material is 99% 0588PVA, the auxiliary material is 1% antistatic agent, the number of warping threads of the warping machine in the above step 2 It is 720 pieces.

Example 3.

A method for producing pure cupro ammonia jacquard fabric, comprising the following steps: 1) selecting 75D to 150D cupro ammonia filaments as raw materials; 2) warping, using batch warping machines for warping, and the unwinding tension during warping greater than the winding tension, the difference in thickness of the copper ammonia wires wound on the warping beam after the warping is completed is not more than 5mm; The speed of the roller, the speed of the yarn drawing roller is 110m/min; 4) parallel axis; 5) according to the warp density and weft density of the fabric and the warp density and weft density required by the position of the pattern. 6) weaving on the upper machine, the loom used for weaving is an electronic dobby shuttleless loom, the width of the shuttleless loom is 55-57 inches, and its rotating speed is 500 rpm.

Wherein, the formula of the slurry used in the above step 3 is: by weight percentage, the main material is 98% 0588PVA, the auxiliary material is 2% antistatic agent, the number of warping threads of the warping machine in the above step 2 1200 pieces.

Example 4.

A method for producing pure cupro ammonia jacquard fabric, comprising the following steps: 1) selecting 75D to 150D cupro ammonia filaments as raw materials; 2) warping, using batch warping machines for warping, and the unwinding tension during warping greater than the winding tension, the difference in thickness of the copper ammonia wires wound on the warping beam after the warping is completed is not more than 5mm; The speed of the roller, the speed of the drawing roller is 100m/min; 4) parallel axis; 5) according to the warp density and weft density of the fabric and the warp density and weft density required by the position of the pattern. 6) weaving on the upper machine, the loom used for weaving is an electronic dobby shuttleless loom, the width of the shuttleless loom is 55-57 inches, and its rotating speed is 580 rpm.

Wherein, the formula of the slurry used in the above step 3 is: by weight percentage, the main material is 98% 0588PVA, the auxiliary material is 2% antistatic agent, the number of warping threads of the warping machine in the above step 2 for 1000 pieces.

Claims (5)

1. A pure cupro jacquard fabric, which is woven from warp yarns and weft yarns, is characterized in that: the warp yarns and the weft yarns are 75D to 150D cupro ammonia filaments; wherein, the warp density is: 429 pieces/10cm to 600 threads/10cm, the weft density is: 310 threads/10cm to 429 threads/10cm, there is a pattern on the fabric, the warp density of the pattern is 429 threads/10cm, and the weft density is 310 threads/ 10cm, which is obtained through the following steps: 1) select 75D to 150D cupro ammonia filament as raw material; After completion, the difference in thickness of the cupro wire wound around the warping beam is not more than 5mm; 3) sizing, the speed of the drawing roller of the sizing machine during the sizing process should be smaller than the speed of the sizing roller, the The speed of the drawing roller is 90-110m/min; 4) Parallel; 5) According to the warp density and weft density of the fabric and the warp density and weft density required by the position of the pattern, the heddle threading and insertion are carried out. Reed; 6) Machine weaving. 2. A pure cupro ammonia jacquard fabric according to claim 1, characterized in that: the formula of the slurry used in the step 3 is: by weight percentage, the main ingredient is 98%-99% 0588PVA, the auxiliary material is 2%-1% antistatic agent. 3. A pure cupro ammonia jacquard fabric according to claim 1, characterized in that: the number of warping wires of the warping machine in the step 2 is 720-1200 wires. 4. A kind of pure cupro jacquard fabric according to claim 1, 2 or 3, characterized in that: the loom used for weaving in the step 6 is an electronic dobby shuttleless loom, and the shuttleless loom The door width is 55-57 inches. 5. A pure cupro ammonia jacquard fabric according to claim 4, characterized in that: the speed of the shuttleless loom is 500-650 rpm.