KR101212677B1 - Method of manufacturing eco-friendly biodegradable knitted fabric - Google Patents

Abstract

PURPOSE: A method of manufacturing environment-friendly biodegradable knitted fabrics is provided to manufacture knitted and woven fabrics having the property that is biodegraded by natural microbes when dumped to landfill and does not cause the environmental contamination due to waste. CONSTITUTION: The manufacturing method of environment-friendly biodegradable knitted fabrics uses yarns with the arrangement of polylactic acid 150D/144F 2ply in the middle ground yarn M1 and polylactic acid 150D/144F 3ply in both-side piles M2, M3 and M4 to 1:1, 3:3, 3:1 alternately; and a warp knitting apparatus with a pipe guide which includes a steel plate with multiple elliptical pipes fixed side by side and fixing holes, and a guide bar combined with the steel plate through the fixing holes so that the route of the yarn is positioned in the center of each elliptical pipe, wherein the elliptical pipe is formed with the length of 2cm and arranged in the steel plate with 1mm gap. The manufacturing method of environment-friendly biodegradable knitted fabrics uses a pure polylactic acid yarn intermingled with 150D/144F 1ply in M1 and 150D/144F 2ply in both-side piles M2, M3, and M4, and a warp knitting apparatus with a pipe guide consisting of a steel plate with multiple elliptical pipes are fixed side by side and a fixing hole, and a guide bar combined with the steel plate through the fixing hole so that the route of the yarn is positioned in the center of the elliptical pipe, wherein the elliptical pipe is formed with the length of 2cm and arranged in the steel plate with 1mm gap. [Reference numerals] (AA) Classification; (BB) Embodiment 1; (CC,EE,GG,II,KK) Performance; (DD) Embodiment 2; (FF) Embodiment 3; (HH) Comparison example 1; (JJ) Comparison example 2; (LL) Tissue photo; (MM) OIL-Wiping; (NN) OIL + contaminant attaching amount; (OO) Moisture rate; (PP,SS) Initial weight; (QQ,TT) Weight after a test; (RR) Attaching amount; (UU) Saturation moisture rate; (VV) Good; (WW) Normal; (XX) Bad

Description

Manufacturing method of eco-friendly biodegradable knitted fabrics {METHOD OF MANUFACTURING ECO-FRIENDLY BIODEGRADABLE KNITTED FABRIC}

The present invention relates to a method for manufacturing an eco-friendly biodegradable knitted fabric for use in environmentally friendly kitchens, bathing articles, bedding and clothing.

In general, kitchens, bath products, bedding and clothing has been used as a yarn used in the manufacture of only synthetic fibers or a mixture of natural and synthetic fibers.

In addition, products have been produced that are superior to natural materials by developing and commercializing various types of processing and weaving in order to lower prices and produce products close to natural fiber textures.

However, conventional kitchens, bath products, bedding, and clothing products contain synthetic fibers such as nylon, rayon, and polyester, and thus are not biodegradable by natural microorganisms when disposed of after use. There is a problem that causes environmental pollution due to waste.

The technical problem to be achieved by the present invention is to provide a method for producing a knitted fabric of biodegradation by natural microorganisms in the landfill disposal after use does not cause environmental pollution due to waste.

According to the present invention, yarns of polylactic acid 150D / 144F (denier / filament) and polyplymic acid 150D / 144F 3 in both piles M2, M3, and M4 are inclined intermediate tissues M1 1: 1, 3: 3, 3 : 1 alternating,

A steel plate having a plurality of elliptical pipes fixed side by side, a fixing hole formed in the iron plate, and a guide bar coupled to the steel plate through the fixing holes, wherein the path through which the yarn is moved is located at the center of the elliptical pipe. Provides a method for manufacturing an eco-friendly biodegradable knitted fabric, characterized in that using a warp knitting device using a pipe guide is fixed to the guide bar.

And entangle the pure polylactic acid yarn with M1 150D / 144F 1 set and 150D / 144F 2 sum with both M2, M3 and M4,

A steel plate to which a plurality of elliptical pipes are fixed side by side, and a fixing hole formed in the iron plate and an elliptical guide bar coupled to the iron plate through the fixing hole, the iron plate is guided to the guide bar so that the path to the yarn is located in the center of the elliptical pipe It also provides a method for producing an eco-friendly biodegradable knitted fabric, characterized in that using a warp knitting device using a fixed pipe guide.

In the front terry tissue, the yarn 30S single yarn mixed with 40% polylactic acid and 60% cotton is arranged in cross-section unevenness, and the rest is interlaced in 3D and 2 polylactic acid 150D / 144F, and knitted into an uneven pattern.

A steel plate to which a plurality of elliptical pipes are fixed side by side, and a fixing bar formed in the iron plate and a guide bar coupled to the iron plate through the fixing hole, the steel plate is fixed to the guide bar so that the path to the yarn is located in the center of the elliptical pipe It also provides a method for producing an eco-friendly biodegradable knitted fabric, characterized in that using a warp knitting device using a pipe guide.

The elliptical pipe may be formed in a length of 2cm length and arranged on the iron plate with a pipe spacing of 1mm, and two fixing holes may be formed in the iron plate.

The present invention has the effect of providing a method for producing a knitted fabric of a nature that is not biodegraded by natural microorganisms when disposed of landfill after use does not cause environmental pollution due to waste.

1 is a front photograph showing a pipe guide device of the present invention.
Figure 2 is a rear photograph of the pipe guide device of Figure 1;
3 is a front photograph showing the pipe guide device of FIG.
Figure 4 is a photograph showing that the pipe guide is mounted on the guide bar.
Figure 5 is a front photograph showing a five gauge pipe guide device of the present invention.
Figure 6 is a rear photograph of the five gauge pipe guide device of FIG.
7 is a front photograph showing a five-gauge pipe guide device of FIG.
8 is a table evaluating an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 is a front photograph showing a pipe guide device of the present invention, FIG. 2 is a rear photograph showing a pipe guide device of FIG. 1, FIG. 3 is a front photograph showing a pipe guide device of FIG. 1, and FIG. 4 is a guide bar. The picture shows that the pipe guide is mounted.

The present invention is the biggest feature of using a 100% biodegradable yarn to implement a knitted fabric used in kitchens, bath products, bedding and clothing.

In the present invention, 100% biodegradable raw material does not scratch the article with excellent lipophilic and soft texture, and is non-toxic, non-irritating, and uses human-friendly polylactic acid (PLA) or biopolyester (BioPolyester) as a yarn. I would like to.

However, since the polylactic acid is silky smooth, soft, and light in weight, it is difficult to knit by using 100% of filament yarn, and various methods for using it as biodegradable plastic have been known as a method of obtaining lactic acid as a raw material from corn starch. Although it has been developed, there are still various process problems and poor production quality problems for fiberization.

In addition, biopolyester has a problem that it is difficult to knit using 100% long fiber because it is silky, soft and light.

However, the present invention provides a method for producing 100% polylactic acid knitted fabric by mechanically supplementing and improving these problems.

In order to provide a 100% polylactic acid or biopolyester knitted fabric production method, polylactic acid or biopolyester DTY 75D / is commonly utilized using Karl Meyer warp knitting machine FBZ 24 gauge or Superpole 12 gauge. I arranged a 72F 260cone and tried knitting with terry cloth.

However, due to the smooth nature of the polylactic acid or biopolyester long fibers during operation, the main part of the machine tissue formation is the Terry Loop due to friction generated during the movement of the guide bar, sinker and presser. ), There is a problem that a terry loop is formed unevenly and jaggedly unevenly.

In order to improve this problem, we arranged 274 bones on the Superpole 12 gauge with polylactic acid or biopolyester long fiber DTY 150D / 144F. Observed.

However, it was confirmed that the variation of the terry loop formation due to yarn friction and tension during the movement of the major parts of tissue formation was performed as in the knitting machine.

In order to improve the non-uniformity of the terry loop formation according to the yarn friction and tension, the present invention broadens the range of movement of the guide bar during terry formation and does not generate friction with the yarn passing through the guide. It provides a warp knitting device having.

The rest of the warp knitting device except for the pipe guide is similar to the warp knitting device which is generally used.

The pipe guide device may be divided into 10 gauges and 5 gauge pipe guides.

The manufacturing process of the 10 gauge pipe guide is as follows.

First, cut a stainless steel plate with a thickness of 1mm or more in width (a) 5cm, length (b) 4cm, and cut the fixing hole to be fixed to the guide bar with a diameter (e) of 1cm. Drill 1cm in diameter (d) and work two fixing holes to be fixed to the pipe guide bar.

Meanwhile, 20 stainless steel oval pipes to serve as guides are cut into lengths (c) 2cm and arranged at a pipe spacing (g) of 1mm, and then fixed by welding to expose 11 mm on a stainless steel plate as shown in the drawing.

The warp knitting device used in the present invention includes an iron plate to which 20 oval pipes are fixed side by side, a fixing hole formed in the iron plate, and a guide bar coupled to the iron plate through the fixing hole, but a path through which the yarn is moved is located at the center of the oval pipe. The iron plate is fixed to the guide bar so as to.

As a result of the knitting test using the pipe guide thus made, the formation of tissue and terry loops is free and stable, and the quality is improved. Test results The yarn thickness of the 10 gauge pipe guide can be freely knitted from 50 denier to 800 denier on a long fiber basis.

The following is a description of the actual production pictures of elliptical pipes among the 10 gauge pipe guides.

By adjusting the pipe hole diameter of the guide made of pipe according to the size of the tissue forming particle (loop), the yarn thickness can be freely adjusted, and the density can also be adjusted according to the pipe guide thickness.

Looking at the shape of the pipe guide, it is an oval shape, 1mm ㅧ 2mm cylindrical, cut the pipe into 2cm length, weld the stainless steel 1mm iron plate to the horizontal 5cm length 4.2cm square, and balance the hole to fix the guide on the iron plate with 1cm diameter. Pipe guide is made by drilling two at 1.5cm intervals.

In the case of a 10 gauge pipe guide, regardless of the type of yarn, the thickness of the yarn can be freely knitted from 50 denier of long fibers to 1,200 denier of 150 deniers and 8 sums.

Meanwhile, the manufacturing process of the 5-gauge pipe guide will be described as follows.

5 is a front photograph showing a five gauge pipe guide device of the present invention, FIG. 6 is a rear photograph showing a five gauge pipe guide device of FIG. 5, and FIG. 7 is a front photograph showing a five gauge pipe guide device of FIG. 5. .

Two fixing holes for cutting 1cm diameter stainless steel plate with a thickness of 5cm and a length of 4cm, with a hole of 1cm in diameter in the upper position and a hole of 1cm in diameter with a space of 1.5cm next to each other. To form.

And 10 stainless steel pipes with a diameter of 2mm to serve as guides are cut into 4cm lengths and arranged horizontally at 2mm intervals. At this time, the length of the pipe guide to be exposed after welding to the steel plate of the cut pipe guide is 2.5cm.

The length of the pipe guide attached to the stainless steel plate is 4 cm or less, so the pipe strength is important. The characteristic of the pipe guide is that the guide bar can be lengthened by moving the guide farther when forming the surface terry. This is to facilitate the exercise. As a result of the knitting test using the circular pipe guide thus manufactured, a terry of thicker and more stable quality than the 10 gauge elliptical guide bar was completed.

As a result of the test, when the 5-gauge circular guide bar is used, the thickness of the yarn is preferably 1,800 denier from 75 denier of long fibers.

The oval pipe of the five gauge pipe guide is described as follows.

Unlike 10-gauge elliptical pipe guide, the guide hole into which yarn is inserted, uses 5 gauge elliptical pipe, the pipe hole diameter is 2mm, and the pipe guide attached to the steel plate is 4cm, so the pipe strength is important. The purpose is to smoothly guide the movement of the guide bar to form a long loop when forming the surface tissue.

In the case of a five-gauge pipe guide, the thickness of the yarn used is preferably 1,800 denier from 75 denier based on long fibers.

Therefore, the diameter of the pipe guide can be freely adjusted according to the yarn used by allowing the diameter of the pipe guide to be selected according to the thickness of the yarn used.

After installing the pipe guide, and using a polylactic acid or biopolyester long fiber DTY75D / 72F 2 in combination double-sided terry fabric, the fabric was thin and the density of the terry loop was too low to maintain the formed tissue .

Therefore, in the present invention, in order to make the most stable tissues, polylactic acid or biopolyester DTY 150D / 144F was arranged in three pairs of double-sided terry loops, respectively, and DTY 150D / 144F one in the bottom tissue.

As a result, the present invention was able to obtain 100% polylactic acid or biopolyester double-sided terry knitted fabric in a very stable form.

In order to increase the density of the terry loop according to the application of the terry fabric by applying the same method, it is possible to form up to 150 denier 8-ply on the basis of long fiber, and 4 ply based on the 150 denier. Experimental results showed that 1,200 denier is preferred at 150 denier based on long fiber.

As a result of installing the pipe-type guide, the effect of freely adjusting the size of the tissue-forming particle (pile loop) is generated, and the effect of creating a distinct and uniform tissue pattern is generated.

In addition, various kinds of knitted fabrics were treated with 2% of the absorbent FC-226 (3M) for 20 minutes at 100 ° C, which is lower than that of general polyester dyeing, to increase the absorbency.

In addition, in the present invention, the polylactic acid layer or the biopolyester layer may have a two-layer or three-layer structure or may have a single-sided or double-sided structure, and the size of the terry loop can be freely or thickly adjusted, and the uneven pattern is formed on the surface of the fabric. Since it can be formed freely, there is an effect that can be formed in a variety of structures according to the intended use.

The tissue composition of the polylactic acid or biopolyester is a knitted fabric with a terry loop protruding from the surface and a back surface or a ribbed shape, and when the terry is formed on the surface, the length of the terry can be freely formed up to 20 cm. It is also available in the form of a chessboard, and when it is formed in the shape of a rib, the surface irregularities can be freely formed in a rhombus or a square shape.

In addition, the width can be freely adjusted by dividing the width according to the intended use, and the bottom tissue, the surface tissue, and the back tissue are formed by alternating polylactic acid or biopolyester 100% spun yarn or long fibers.

The bottom tissue is composed of polylactic acid or biopolyester long fiber yarn of 75D ~ 450D and the upper and lower surfaces of the bottom tissue is composed of polylactic acid or biopolyester long fiber of terry or corrugated form, or 1 ~ 5 ply of yarn The upper and lower terry loops of the tissue may protrude to 0.5 to 10 cm, and the particle size of the terry loops may also be 3 mm to 3 cm in diameter.

Hereinafter, the manufacturing method of the eco-friendly biodegradable knitted fabric of the present invention is specified by the embodiment. In the present invention, both polylactic acid or biopolyester are applicable, but the following describes an example using polylactic acid.

≪ Example 1 >

Yarn is a combination of two polylactic acid 150D / 144F (manufactured by Huvis) in a middle ground yarn M1 and a polylactic acid 150D / 144F three in a double-sided pile M2, M3, M4 1: 1, 3: 3 , 3: 1 alternately arranged.

In addition, 100% natural biodegradable polylactic acid was used, and as described above, the newly developed pipe-type guide can be used to freely adjust the size of the tissue particles, and the length of the pile can also be adjusted at 20 cm or less. In about 4mm was formed.

In addition, during knitting, polylactic acid was formed with a lot of irregularities to increase hygroscopicity, quick-drying, and wipeability, thereby improving breathability and increasing friction by forming irregularities.

The knitting machine used was a warp knitting machine which was a modification of the Carl Meier knitting machine FBZ, Superpole, and Comez.

The fabric knitted above was dyed under the following conditions.

1. Pretreatment

Pretreatment was carried out under the conditions of removing impurities by the same method as general polyester.

Rapid dyeing machine uses rapid dyeing machine, pretreatment temperature and time is 20 minutes at 60 ~ 95 ℃ and Na ₂ CO ₃ is used as refining agent 0.5 ~ 1 g / 1.

The pretreated knitted fabrics were dyed under the following conditions in the same facility.

2. Dyeing <Caution due to the nature of polylactic acid melts at high temperature and embrittles in alkali

The most recommended dyes are Esperse Red PLA, Esperse Yellow PLA, Esperse Blue PLA, Esperse Orange PLA, Esperse Rubine PLA and Esperse Navy PLA.

Temperature and time are dispersed and dyed for 30 minutes at 100 ~ 110 ℃, FC-226 (3M) 2% owf is used as the absorbent.

3.drying

Drying was processed at a temperature of 110 ~ 130 ℃ with an 8 chamber gas tenter (Ilsung Machinery), the speed of the tenter was adjusted according to the thickness of the fabric. In this case, attention should be paid to the change in the texture of the knitted fabric at a temperature of 130 ° C. or higher.

The knitted fabric treated as above was slitted three to make each finished product.

&Lt; Example 2 >

As in Example 1, 100% polylactic acid yarns were arranged in the same manner as the front, back, and intermediate tissue yarns in 150D / 144 1 M1 and 150D / 144F 2 pieces M2, M3, and M4 interwoven and knitted into plain weave tissue. It was.

&Lt; Example 3 >

As in Example 1, yarn 30S single yarn (manufactured by Huvis) mixed with 40% of polylactic acid and 60% of cotton is arranged in the front terry tissue, and the rest is entangled with 3 sets of polylactic acid 150D / 144F and 2 sets. It was arranged and knitted by uneven pattern and dyed.

&Lt; Comparative Example 1 &

The terry fabric woven by mixing a common cotton yarn 30S and polyester was dyed by a general cotton fiber dyeing method.

&Lt; Comparative Example 2 &

Rayon 30S single yarn was arranged on both sides of the terry area, and the intermediate tissues were interlaced with polyester 150D / 48F 2p, knitted with double-sided terry with a superpole warp knitting machine, and dyed by the general cotton fiber dyeing method as in Comparative Example 1.

8 is a table evaluating an embodiment of the present invention.

Referring to Figure 8, it can be seen that the fabric produced according to the embodiment of the present invention, the wiping performance, the adhesion amount of contaminants is much better than that of the comparative example.

In addition, the wiping performance was evaluated by the tester by rubbing 10 times before and after 10 times at 15cm intervals at a pressure of 15kg weight, comparing the fabric weight before the test and the weight after the test to quantify the amount of contaminant adhesion, and the functionality was measured by the weight of the sample. Was sufficiently immersed in a beaker immersed in 100 ml of water and then taken out and expressed as a weight when the water no longer dropped and evaluated.

Knitted fabrics according to the present invention are naturally biodegradable by 100% microorganisms due to the nature of polylactic acid and do not scratch the article with excellent lipophilic and soft texture, and are friendly due to non-toxic, non-irritating kitchens, bath products, bedding and clothing. It is expected to be widely used in the product.

In particular, unlike general cotton, synthetic fibers, and polyester / nylon split yarn, polylactic acid 100% knitted fabric is a vegetable raw material, which is applicable to bathing, kitchen, socks, clothing, and bedding.

The kitchens, bath products, beddings and clothing of the present invention are 100% biodegradable, yet have a lipophilic layer composed of 100% human-friendly polylactic acid with non-toxic, non-irritating properties, with excellent lipophilic and soft texture. This allows 100% biodegradation without causing environmental pollution during disposal.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

a: horizontal b: vertical

Claims (5)

The yarns are arranged in a 1: 1, 3: 3, 3: 1 alternating polylactic acid 150D / 144F summation on the inclined intermediate tissue M1 and the polylactic acid 150D / 144F summation on the double side piles M2, M3, and M4,
A steel plate to which a plurality of elliptical pipes are fixed side by side, and a fixing bar formed in the iron plate and a guide bar coupled to the iron plate through the fixing hole, the steel plate is fixed to the guide bar so that the path to the yarn is located in the center of the elliptical pipe Using a warp knitting device with a pipe guide,
The elliptical pipe is formed with a length of 2cm, the method of producing an eco-friendly biodegradable knitted fabric, characterized in that arranged on the iron plate with a pipe spacing of 1mm. Interlaced pure polylactic acid yarns into M1 150D / 144F 1p and double-sided piles M2, M3 and M4 150D / 144F 2p,
A steel plate to which a plurality of elliptical pipes are fixed side by side, and a fixing bar formed in the iron plate and a guide bar coupled to the iron plate through the fixing hole, the steel plate is fixed to the guide bar so that the path to the yarn is located in the center of the elliptical pipe Using a warp knitting device with a pipe guide,
The elliptical pipe is formed with a length of 2cm, the method of producing an eco-friendly biodegradable knitted fabric, characterized in that arranged on the iron plate with a pipe spacing of 1mm. Spun yarn 30S single yarn mixed with 40% polylactic acid and 60% cotton in the front terry tissue is arranged in cross-sectional unevenness, and the rest is interlaced with polylactic acid 150D / 144F 3p and 2p.
A steel plate to which a plurality of elliptical pipes are fixed side by side, and a fixing bar formed in the iron plate and a guide bar coupled to the iron plate through the fixing hole, the steel plate is fixed to the guide bar so that the path to the yarn is located in the center of the elliptical pipe Using a warp knitting device with a pipe guide,
The elliptical pipe is formed with a length of 2cm, the method of producing an eco-friendly biodegradable knitted fabric, characterized in that arranged on the iron plate with a pipe spacing of 1mm. delete 4. The method according to any one of claims 1 to 3,
The iron plate is a manufacturing method of eco-friendly biodegradable knitted fabric, characterized in that two fixing holes are formed.

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