KR102677624B1 - Manufacturing method for upcycled coating glove using waste fiber, upcycled coating glove manufactured using the same - Google Patents

Abstract

The present invention relates to a method of manufacturing upcycled coated gloves using waste fibers and upcycled coated gloves manufactured thereby. In one embodiment, the method of manufacturing upcycled coated gloves includes cutting and dismantling fabric waste to produce waste fibers; A mixing step of mixing raw materials including the waste fibers and reinforcing fibers and removing foreign substances; A carding step of manufacturing sliver using the raw materials that have undergone the mixing step; A stretching step of manufacturing one sliver by combining and stretching the plurality of sliver strands; A spinning step of manufacturing yarn using the drawn sliver; Knitting the yarn to produce a glove-shaped knit; and applying a coating solution to at least a portion of the knitted fabric and curing it, wherein the coating solution includes one or more of latex, polyurethane, polyvinyl chloride, natural rubber, and synthetic rubber.

Description

Method for manufacturing upcycle coated gloves using waste fiber and upcycle coated gloves manufactured thereby {MANUFACTURING METHOD FOR UPCYCLED COATING GLOVE USING WASTE FIBER, UPCYCLED COATING GLOVE MANUFACTURED USING THE SAME}

The present invention relates to a method of manufacturing upcycled coated gloves using waste fibers and upcycled coated gloves manufactured thereby.

Environmental pollution due to waste generation is serious around the world, and recycling is being implemented in many areas. The amount of clothing waste, such as discarded clothes generated in daily life, and fabric waste, such as waste scrap generated during the clothing production process, increases every year, making it urgent to prepare measures to deal with this.

In particular, at large clothing and shoe production sites, the amount of fabric waste such as scrap is discarded every year. Currently, most of it is incinerated or landfilled. If it is possible to produce coated gloves for work by recycling them, waste can be reduced and existing gloves can be recycled. It is expected that the use of petrochemical products will also be reduced.

However, in the case of fabric waste such as scrap, there are still many limitations in recycling, and new technologies to improve these are desperately needed. Specifically, waste fiber is an item that needs to be recycled, but due to lack of appropriate disposal methods, most of it is incinerated or disposed of through landfill or ocean dumping. However, incineration of waste fibers is expensive, increases greenhouse gas emissions, and has a negative impact on the environment due to the generation of leachate containing harmful substances during landfilling and ocean dumping.

Therefore, methods are being researched to minimize the costs incurred in disposing of waste clothing by recycling waste clothing and waste fiber scraps, and to manufacture gloves with excellent mechanical properties while preventing environmental pollution.

Background technology related to the present invention is disclosed in Republic of Korea Patent Publication No. 2019-0089728 (published on July 31, 2019, title of the invention: System and method for recycling fiber from waste fiber).

One purpose of the present invention is to provide a method of manufacturing upcycled coated gloves that are economical by utilizing waste fibers and are eco-friendly by preventing environmental pollution.

Another object of the present invention is to provide a method of manufacturing upcycled coated gloves that have excellent yarn strength and uniformity and prevent the generation of lint (pilling).

Another object of the present invention is to provide a method of manufacturing upcycled coated gloves that have excellent conductivity, enabling the operation of touch screen devices while wearing coated gloves, and capable of handling oil and gas by preventing static electricity.

Another object of the present invention is to provide upcycled coated gloves manufactured by the upcycle coated gloves manufacturing method.

One aspect of the present invention relates to a method of manufacturing upcycled coated gloves using waste fiber. In one embodiment, the method of manufacturing upcycled coated gloves includes cutting and dismantling fabric waste to produce waste fibers; A mixing step of mixing raw materials including the waste fibers and reinforcing fibers and removing foreign substances; A carding step of manufacturing sliver using the raw materials that have undergone the mixing step; A stretching step of manufacturing one sliver by combining and stretching the plurality of sliver strands; A spinning step of manufacturing yarn using the drawn sliver; Knitting the yarn to produce a glove-shaped knit; and applying a coating solution to at least a portion of the knitted fabric and curing it, wherein the coating solution includes one or more of latex, polyurethane, polyvinyl chloride, natural rubber, and synthetic rubber.

In one embodiment, the raw material further includes low-melting point polyester short fibers, and the low-melting point polyester short fibers are formed on a core including polyester fibers with a melting point of 250°C or higher and an outer peripheral surface of the core and have a melting point of 110 to 200°C. It may include a sheath containing low melting point polyester.

In one embodiment, the yarn has a thickness of Ne10/1 to Ne40/1 and a twist number of 300 to 1000 TPM (twist per meter), and when the yarn is a 2-ply yarn, the yarn has a thickness of Ne20/2 to Ne40/2 and a twist number. 300 to 800 TPM, and the yarn may have a tensile strength of 200 to 1,100 gf, an elongation of 6 to 13%, and a specific strength of 18 to 35 g/tex.

In one embodiment, the reinforcing staple fibers may include one or more of polyester fibers, cotton fibers, viscose rayon-based fibers, wool fibers, and acrylic fibers.

In one embodiment, between the drawing step and the spinning step, a roving step of stretching and twisting the sliver may be further included.

In one embodiment, the step of manufacturing the glove-shaped knitted fabric may be performed by knitting the yarn and the conductive yarn to form a conductive portion in at least a portion of the knitted fabric.

In one embodiment, the coating solution may further include a conductive material.

Another aspect of the present invention relates to upcycled coated gloves manufactured by the upcycle coated gloves manufacturing method using waste fiber. In one embodiment, the upcycled coated gloves include a glove portion including a knitted fabric; and a coating portion formed on at least a portion of the surface of the armored portion, wherein the coating portion includes one or more of latex, polyurethane, polyvinyl chloride, natural rubber, and synthetic rubber, and the knitted fabric includes waste fibers and reinforcing staple fibers. It is manufactured by knitting yarn containing.

In one embodiment, the yarn may further include low melting point polyester short fibers.

In one embodiment, a conductive portion formed by knitting the yarn and the conductive yarn may be further formed on at least a portion of the armored portion.

In one embodiment, the coating part may further include a conductive material.

In one embodiment, the yarn has a thickness of Ne10/1 to Ne40/1 and a twist number of 300 to 1000 TPM (twist per meter), and if the yarn is a 2-ply yarn, the yarn has a thickness of Ne20/2 to Ne40/2 and a twist number. 300 to 800 TPM, and the yarn may have a tensile strength of 200 to 1,100 gf, an elongation of 6 to 13%, and a specific strength of 18 to 35 g/tex.

The upcycled coated gloves according to the present invention utilize discarded waste fibers to manufacture upcycle coated gloves, which minimizes the cost of discarding waste clothing, thereby providing excellent economic efficiency, excellent eco-friendliness by preventing environmental pollution, and conductivity. Excellent, it is possible to operate touch screen devices while wearing coated gloves. It prevents the generation of static electricity, making it possible to handle oil and gas, etc. The strength and uniformity of the coated gloves are excellent, and the generation of lint (pilling) is minimized. , it is easy to knit or weave, and can have excellent sensory properties such as a soft feel.

Figure 1 shows a method of manufacturing upcycled coated gloves using waste fiber according to one embodiment of the present invention.
Figure 2 shows one side of an upcycled coated glove using waste fiber according to an embodiment of the present invention.
Figure 3 shows the other side of an upcycled coated glove using waste fiber according to an embodiment of the present invention.
Figure 4(a) is an enlarged photograph of the upcycled yarn of Example 1, and Figure 4(b) is an enlarged photograph of the glove knit fabric of Example 1.
Figure 5(a) is a photograph of one side of the upcycled coated gloves of Example 1, and Figure 5(b) is a photograph of the other side of the upcycled coated gloves of Example 1.

In describing the present invention, if it is determined that a detailed description of related known technology or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

In addition, the terms described below are terms defined in consideration of the functions in the present invention, and may vary depending on the intention or custom of the user or operator, so the definitions should be made based on the content throughout the specification explaining the present invention.

The present invention was created in response to the above-mentioned need, and produces fiber for spinning through processes such as cutting, shredding, and carneting of fabric waste such as waste clothing, followed by mixing, carding, and drawing. The purpose is to produce recyclable yarn (or spun yarn) through processes such as sliver manufacturing, roving, and spinning (yarn manufacturing), and to provide a method of manufacturing coated gloves using it. .

Method for manufacturing upcycled coated gloves using waste fiber

One aspect of the present invention relates to a method of manufacturing upcycled coated gloves using waste fiber. Figure 1 shows a method of manufacturing upcycled coated gloves using waste fiber according to one embodiment of the present invention. Referring to FIG. 1, the method of manufacturing upcycled coated gloves using the waste fiber includes (S10) a waste fiber manufacturing step; (S20) Hontamyeon stage; (S30) carding step; (S40) Drawing step; (S50) spinning step; (S60) Knitting step; and (S70) coating glove manufacturing step.

More specifically, the method of manufacturing upcycled coated gloves using the waste fiber includes (S10) cutting and dismantling fabric waste to produce waste fiber; (S20) a mixing step of mixing raw materials including the waste fibers and reinforcing fibers and removing foreign substances; (S30) a carding step of manufacturing sliver using the raw materials that have passed through the mixing step; (S40) a stretching step of manufacturing one sliver by combining and stretching the plurality of sliver strands; (S50) a spinning step of manufacturing yarn using the drawn sliver; (S60) knitting the yarn to produce a glove-shaped knit; and (S70) applying a coating solution to at least a portion of the knitted fabric and curing it, wherein the coating solution includes one or more of latex, polyurethane, polyvinyl chloride, natural rubber, and synthetic rubber.

Hereinafter, the method of manufacturing upcycled coated gloves according to the present invention will be described in detail step by step.

(S10) Waste fiber manufacturing stage

This step is to manufacture waste fiber by cutting and carding fabric waste.

The above fabric waste can be used as a conventional material. For example, it may include one or more of PIR (post industrial recycle), such as waste scraps generated in the clothing and shoe production process such as sewing, and waste clothing discarded after consumer use (PCR, post consumer recycle). Not limited.

For example, the fabric waste may include one or more of cotton fibers, thermoplastic elastomer fibers, thermoplastic polyurethane fibers, polyester fibers, nylon fibers, and viscose rayon fibers. When the above types of fabric waste are included, recycled yarn can be easily manufactured.

The fabric waste can be put into a cutting facility and cut into a predetermined size. For example, depending on the material, structure, and processing status of the fabric waste, it can be cut more than once. For example, it can be cut to a size of less than 7cm in width and height. The length may be the maximum length of the fabric waste.

The cut fabric waste can be shredding and unraveling the cut fabric waste using a maigiri equipment. During the above-mentioned cotton, the carnet work to be described later can be easily performed and waste fibers can be easily manufactured.

The woven fabric waste is dismantled by passing through a carnet facility containing 2 to 8 drums (cylinders) tightly equipped with a plurality of needles (carnet process) to secure the optimal fiber length and fiber condition. Fiber can be manufactured.

In one embodiment, the closed fiber may have a length of 10 to 70 mm. The yarn of the present invention can be easily manufactured under the above length conditions. For example, the length may be 15 to 50 mm.

(S20) Hontamyeon stage

This step is a step of mixing raw materials including the waste fibers and reinforcing fibers and removing foreign substances. In the blowing step, blending is performed to mix the raw materials into lumps, then opening is performed to loosen the mixed raw material lumps and mix them evenly, and first remove impurities in the raw material fibers. This may be to carry out cleaning.

For example, the raw material may include 10 to 40% by weight of waste fibers and 60 to 90% by weight of reinforcing short fibers.

In one embodiment, the reinforcing single fiber may have a length of 10 to 70 mm. Under the above length conditions, yarn can be easily manufactured. For example, the length may be 15 to 50 mm.

The reinforcing short fibers may be included for the purpose of securing sensory properties such as physical properties and touch of the yarn. In one embodiment, the reinforcing staple fibers may include one or more of polyester fibers, cotton fibers, viscose rayon-based fibers, wool fibers, and acrylic fibers.

In one embodiment, the polyester fiber may include one or more of recycled polyester fiber and virgin polyester fiber.

When the reinforcing short fibers are included, the cost reduction effect due to yarn recycling can be excellent without deteriorating the sensory properties such as mechanical properties and texture of the yarn.

The recycled polyester fiber can be used as a conventional fiber. For example, the recycled polyester fiber is produced by melting waste polyester such as polyester fiber, polyester film, and polyester molded bodies such as bottles, etc.; Obtaining a filtrate by filtering other inorganic substances, foreign substances, and denatured components; Extruding the filtrate to produce recycled polyester pellets; Melting and kneading a mixture containing the recycled polyester pellets and regular polyester pellets to prepare a kneaded product; and spinning the kneaded product into single fibers.

In one embodiment, the waste fiber may be included in an amount of 10 to 40% by weight based on the total weight of the raw material. When included in the above content range, production costs are reduced and economic efficiency is excellent, knitted gloves are easy to manufacture, and the mechanical properties of the coated gloves can be excellent. For example, it may contain 15 to 30% by weight.

In one embodiment, the reinforcing short fibers may be included in an amount of 60 to 90% by weight based on the total weight of the raw material. When included in the above content range, it is easy to manufacture knitted gloves, and the mechanical properties of the coated gloves can be excellent. For example, it may contain 65 to 80% by weight. For another example, it may contain 70 to 85% by weight.

In one embodiment, the raw material may further include low melting point polyester short fibers. When the low-melting point polyester short fibers are included, fluff generation can be prevented and the mechanical properties of the coated gloves can be improved.

In one embodiment, the low melting point polyester single fiber may have a length of 10 to 70 mm. Under the above length conditions, yarn can be easily manufactured. For example, the length may be 15 to 50 mm.

The low melting point polyester staple fiber may be included for the purpose of improving the mechanical properties of the yarn by fusion with the waste staple fiber and the reinforcing staple fiber, improving uniformity, and preventing the generation of lint (pilling).

The low-melting point polyester short fibers can be manufactured by composite spinning regular polyester and modified low-melting point polyester. The low-melting point polyester staple fiber can be fused with the waste fiber and reinforcing staple fiber to produce yarn by using the property of low-melting polyester components to adhere to each other through heat treatment.

In particular, low melting point polyester short fibers can be melted and bonded at a relatively low temperature, so they are environmentally friendly due to low energy usage and carbon dioxide emissions, and can have an excellent ability to maintain a certain shape after combining with the components of the raw materials. For example, as the outer sheath melts at a certain temperature (maintaining the shape of the sheath), it becomes adhesive, and after manufacturing yarn by adhering to other raw material components, both the core and the sheath can maintain their shape. there is.

In one embodiment, the low-melting polyester short fibers include a core containing polyester fibers with a melting point of 250°C or higher and a sheath formed on the outer peripheral surface of the core and containing low-melting polyester with a melting point of 110 to 200°C. ) may include. For example, the core may include polyester fibers with a melting point of 250 to 270°C.

When applying a sheath containing low-melting polyester with a melting point of 110 to 200°C, raw material adhesion is excellent, so yarn can be easily manufactured, uniformity can be improved, and lint (pilling) generation can be prevented.

In one embodiment, the low-melting polyester short fiber is manufactured using a composition containing one or more of terephthalic acid, isophthalic acid, and adipic acid, and a diol-based compound. can do. The diol-based compound may include one or more of ethylene glycol and 1,4-butanediol.

For example, the composition may be spun using a spinneret, the spun composition may be cooled to prepare a coolant, and the cooled product may be stretched and heat treated.

In one embodiment, the low melting point polyester short fiber may be included in an amount of 5 to 15% by weight based on the total weight of the raw material. When included in the above content range, the adhesion of the raw material is excellent, so the yarn can be easily manufactured, and it prevents excessive hardness of the yarn from increasing, making it easy to knit or weave and providing excellent feel, and improving the uniformity of the yarn to prevent fluff (pilling). While preventing this from occurring, the strength and durability of the yarn can be excellent. For example, it may contain 5 to 10% by weight.

In one embodiment, the raw material (or yarn) may include 10 to 35% by weight of waste fibers, 60 to 85% by weight of reinforcing short fibers, and 5 to 15% by weight of low melting point polyester short fibers.

(S30) Carding step

This step is a step of manufacturing sliver using the raw materials that have passed through the mixing step. In the carding (or carding) step, slivers can be manufactured after combing the raw materials from the Honta (carding, sorting, and secondary debris removal).

For example, the raw materials are put into a carding facility to remove fiber neps and other foreign substances remaining in the waste fibers, and the waste fibers are combed parallel to each other in one direction to align them. Sliver can be manufactured using raw materials.

In one embodiment, a combing step may be further performed after the carding step. The top surface may be combed using a finer comb than the carding.

(S40) Drawing stage

This step is a step of manufacturing one sliver by combining and stretching the plurality of sliver strands.

In one embodiment, the produced sliver can be manufactured by combining 5 to 8 strands (bones) through a drawing process and stretching them into one sliver. For example, the drawing process can be performed more than once to make the thin and thick parts of each sliver complement each other, make the thickness even, and adjust the uniformity to produce drawn sliver.

In one embodiment, after the drawing step (S40) and before performing the spinning step, a spinning step of stretching and twisting the sliver may be further included. In the roving step, roving, which is an intermediate state between sliver and yarn, can be manufactured by stretching and twisting the sliver.

(S50) spinning stage

The above step is a step of manufacturing yarn using the drawn sliver (or roving). For example, in the above step, yarn can be manufactured from the stretched sliver (or roving) using spinning equipment.

In one embodiment, the yarn manufactured in the spinning facility may further include a winding step in which the yarn is wound into a cheese shape.

In one embodiment, the yarn may be produced by one or more of ring spinning, air jet spinning or MVS spinning, and open end spinning (OE).

In one embodiment, in the ring yarn process, raw materials containing waste fibers are used to produce yarn through the stages of mixing, carding, combing, drawing, roving, spinning and winding. .

In another embodiment, in the MVS yarn or OE yarn process, raw materials containing waste fibers can be used to produce yarn through the stages of mixing, carding, combing, drawing, and spinning. . In the MVS yarn or OE yarn process, yarn can be manufactured using the sliver and immediately wound into a cheese shape.

When the yarn is dyed and used, melt bonding is possible during the dyeing process, but the coated gloves of the present invention can be manufactured without dyeing for eco-friendliness.

The low-melting point polyester short fibers are melt-bonded with other raw materials in the glove coating process, which will be described later, and this can suppress pilling that may occur during use of the gloves and extend the use period of the gloves. This can also help reduce secondary waste.

The yarn may have a thickness (count) of Ne10/1 to Ne40/1. Under the above thickness conditions, the durability of the yarn is excellent and it is possible to manufacture a variety of knitted gloves with excellent tactile feel and excellent versatility.

In one embodiment, the yarn may have a twist number of 300 to 1000 TPM (twist per meter). Under the above twisting conditions, coated gloves can have a soft feel and have excellent strength and mechanical properties.

In one embodiment, when the yarn is a 2-ply yarn, it may have a thickness of Ne20/2 to Ne40/2 and a twist number of 300 to 800 TPM. Under the above thickness and twist conditions, coated gloves can have a soft feel and excellent strength and mechanical properties.

In one embodiment, the yarn may have a tensile strength of 200 to 1,100 gf, an elongation of 6 to 13%, and a specific strength of 18 to 35 g/tex. Under the above conditions, coated gloves can have a soft feel and excellent strength and mechanical properties.

In one embodiment, the tensile strength, elongation, and specific strength of the yarn may be measured using a measuring device. For example, it can be measured using a testing device manufactured by USTER.

(S60) Knitting step

This step is a step of manufacturing a glove-shaped knit by knitting the yarn. Glove-shaped knitted fabric can be manufactured by knitting the yarn using a typical glove knitting machine. For example, using the glove knitting equipment, knitted fabrics can be manufactured under 7 gauge, 10 gauge, 13 gauge, 15 gauge, or 18 gauge conditions. Meanwhile, the gauge indicates the number of knitting needles within 1 inch of length.

In the knitting step (S60), covering yarn may be further included when manufacturing the glove-shaped knitted fabric. For example, a two-layer knitted fabric having a glove shape can be manufactured by knitting the yarn and covering yarn.

When the covering yarn is further included, the elasticity of the glove can be further improved. In one embodiment, the covering yarn may include one or more of spandex yarn, polyester yarn, and nylon yarn. When the covering yarn is included, the elasticity and mechanical properties of the glove can be excellent. For example, the nylon yarn may include nylon draw textured yarn (DTY).

The covering yarn may have a thickness of 40 to 200 denier. For example, the covering yarn may be spandex/nylon false-twist yarn under the conditions of 20d/40d, 30d/40d, 40d/40d, or 40d/70d (denier).

In another embodiment, the glove knit fabric can be produced as a single layer (1 layer) by directly covering the upcycled yarn and spandex. The spandex may have a thickness of 40 to 140 denier.

In one embodiment, the step of manufacturing the glove-shaped knitted fabric may be performed by knitting the yarn and the conductive yarn to form a conductive portion in at least a portion of the knitted fabric. When forming the conductive part as described above, it is possible to operate a touch screen device while wearing coated gloves, and it also has an anti-static effect, making it possible to handle oil, gas, etc.

In one embodiment, the conductive yarn may include one or more of copper conductive yarn and carbon-based yarn. For example, the copper conductive yarn may be a nylon-based yarn coated with copper (Cu) on the surface.

(S70) Coated gloves manufacturing stage

The step is to manufacture coated gloves by applying a coating solution to at least a portion of the knitted fabric and curing it. For example, coated gloves can be manufactured by applying a coating solution to at least a portion of the knitted fabric or by hardening it after dipping to form a coating portion.

In one embodiment, the coating solution includes one or more of latex, polyurethane, polyvinyl chloride, natural rubber, and synthetic rubber. In one embodiment, the synthetic rubber may include one or more of acrylonitrile-butadiene rubber (ABR), nitrile-butadiene rubber (NBR), Buna-N rubber, and chloroprene. . When the coating liquid is included, the coating part is easily formed, and the coating part can be excellent in preventing slipping and having excellent mechanical properties.

In one embodiment, the coating component may be included in an amount of 5 to 60% by weight based on the total weight of the coating solution. When included in the above range, mixing and dispersibility are excellent, and the anti-slip and mechanical properties of coated gloves can be excellent. For example, it may contain 5 to 50% by weight, 5 to 40% by weight, 5 to 30% by weight, or 5 to 25% by weight.

In one embodiment, the coating solution may include one or more coating ingredients selected from latex, polyurethane, polyvinyl chloride, natural rubber, and synthetic rubber, and a solvent. In one embodiment, the coating solution may further include a conductive material.

In one embodiment, the coating solution may include 5 to 60% by weight of coating ingredient, 1 to 30% by weight of conductive material, and 5 to 70% by weight of solvent based on the total weight. When included in the above content range, miscibility and dispersibility are excellent, the mechanical properties of the coating part are excellent, and conductivity can be easily secured.

In one embodiment, the coating solution may further include a conductive material. In one embodiment, the conductive material may include one or more of conductive carbon, graphite, and acetylene black. When the conductive material is included, the conductivity of the coated gloves can be easily secured.

In one embodiment, the conductive material may be included in an amount of 1 to 30% by weight based on the total weight of the coating solution. When included within the above range, miscibility and dispersibility are excellent, and conductivity can be easily imparted. For example, it may contain 2 to 25% by weight, 5 to 20% by weight, or 5 to 10% by weight.

In another embodiment, the coating solution may further include one or more additives selected from the group consisting of a crosslinking agent, dispersant, emulsion stabilizer, and thickener. The additive may be included in an amount of 0.1 to 20% by weight based on the total weight of the coating solution. For example, it may contain 0.1 to 15% by weight, 0.1 to 10% by weight, or 0.5 to 5% by weight.

In another embodiment, the coating glove manufacturing step may further include forming a conductive coating layer by applying a conductive coating solution to at least a portion of the coating portion formed by applying the coating solution to at least a portion of the knitted fabric and curing it. there is.

The conductive coating liquid may include one or more conductive materials and a solvent selected from conductive carbon, graphite, and acetylene black. For example, the conductive coating solution may include 1 to 50% by weight of a conductive material and 50 to 99% by weight of a solvent. When included in the above content range, miscibility and dispersibility are excellent, the mechanical properties of the conductive coating layer are excellent, and conductivity can be easily secured.

In one embodiment, the coating liquid may have a viscosity (25°C) of 10 to 1000 cPs. Workability may be easy under the above conditions.

In one embodiment, coated gloves can be manufactured by forming the coating portion and going through processes such as washing (refining) and drying (curing). For example, the coated gloves may include coated gloves for work.

The curing (drying) may be performed at 50 to 200° C., but is not limited thereto. For example, it may be carried out at 100-150°C.

At this time, when the low-melting point polyester short fiber component is included in the yarn during the coating glove manufacturing process, melt adhesion of the low-melting point polyester component may occur. In the coating process, the glove knitted fabric mounted on the mold is dipped into a bath containing coating liquids such as PU, NBR, and Latex, and passed through a continuous process of scouring (washing) and drying. Typical conditions at this time are about 120 Melt adhesion of the low melting point polyester component can occur in 60 minutes at ℃. Meanwhile, when applying nitrile butadiene rubber (NBR), it does not harden below 100℃, so it must be above 100℃. If it exceeds 150℃, it should be avoided as there is a risk of discoloration and changes in physical properties, especially if the inner layer of the glove is made of a material such as nylon. . In addition, drying time of the coating agent alone can be done in 20 minutes, but since there is a scouring (washing) process after coating, the time for the gloves to dry must be taken into account, so it may take about an hour.

Upcycled coated gloves manufactured using an upcycle coated glove manufacturing method using waste fiber.

Another aspect of the present invention relates to upcycled coated gloves manufactured by a method of manufacturing upcycle coated gloves using waste fibers.

Figure 2 shows one side of an upcycled coated glove using waste fiber according to an embodiment of the present invention, and Figure 3 shows the other coated side of the upcycled glove. Referring to FIGS. 2 and 3, the upcycled gloves 100 include a glove portion 10 including knitted fabric; and a coating portion 20 formed on at least a portion of the surface of the armor portion 10.

For example, the coating portion 20 may be formed on the finger and palm portions of the glove portion 10.

The coating portion includes one or more of latex, polyurethane, polyvinyl chloride, natural rubber, and synthetic rubber.

In one embodiment, the synthetic rubber may include one or more of acrylonitrile-butadiene rubber (ABR), nitrile-butadiene rubber (NBR), Buna-N rubber, and chloroprene. .

When forming the coating portion, slip prevention and mechanical properties can be excellent. For example, the gloves may include work gloves.

In one embodiment, the coating part may further include a conductive material. In one embodiment, the conductive material may include one or more of conductive carbon, graphite, and acetylene black. When the conductive material is included, the conductivity of the coated gloves can be excellent.

The coating may include 50 to 99% by weight of one or more coating ingredients selected from latex, polyurethane, polyvinyl chloride, natural rubber, and synthetic rubber, and 1 to 50% by weight of a conductive material. Under the above conditions, the coated gloves may have excellent conductivity, anti-slip and excellent mechanical properties.

In one embodiment, a conductive coating layer may be further formed on at least a portion of the surface of the coating portion. The conductive coating layer may be formed on areas corresponding to the fingertips and palm of the coating portion.

The conductive coating layer may include one or more conductive materials selected from conductive carbon, graphite, and acetylene black. Under the above conditions, conductivity can be easily secured.

The knitted fabric is manufactured by knitting yarn containing waste staple fibers and reinforcing staple fibers. For example, the yarn may include 10 to 40% by weight of waste fibers and 60 to 90% by weight of reinforcing short fibers. The waste fibers and reinforcing fibers may be the same as those described above.

In one embodiment, the waste fiber may be included in an amount of 10 to 40% by weight based on the total weight of the raw material. When included in the above content range, production costs are reduced and economic efficiency is excellent, knitted gloves are easy to manufacture, and the mechanical properties of the coated gloves can be excellent. For example, it may contain 15 to 30% by weight.

In one embodiment, the reinforcing short fibers may be included in an amount of 60 to 90% by weight based on the total weight of the raw material. When included in the above content range, it is easy to manufacture knitted gloves, and the mechanical properties of the coated gloves can be excellent. For example, it may contain 65 to 80% by weight. For another example, it may contain 70 to 85% by weight.

In one embodiment, the raw material may further include low melting point polyester short fibers. When the low-melting point polyester short fibers are included, fluff generation can be prevented and the mechanical properties of the coated gloves can be improved.

In one embodiment, the low melting point polyester single fiber may have a length of 10 to 70 mm. Under the above length conditions, yarn can be easily manufactured. For example, the length may be 15 to 50 mm.

The low melting point polyester staple fiber may be included for the purpose of improving the mechanical properties of the yarn by fusion with the waste staple fiber and the reinforcing staple fiber, improving uniformity, and preventing the generation of lint (pilling).

In one embodiment, the low-melting polyester short fibers include a core containing polyester fibers with a melting point of 250°C or higher and a sheath formed on the outer peripheral surface of the core and containing low-melting polyester with a melting point of 110 to 200°C. ) may include. For example, the core may include polyester fibers with a melting point of 250 to 270°C.

When applying a sheath containing low-melting polyester with a melting point of 110 to 200°C, raw material adhesion is excellent, so yarn can be easily manufactured, uniformity can be improved, and lint (pilling) generation can be minimized.

In one embodiment, the yarn may have at least a portion of the low-melting point polyester single fibers (or the core of the low-melting point polyester single fibers) fused to each other with the closed fibers and the reinforcing single fibers.

In one embodiment, the low melting point polyester short fiber may be included in an amount of 5 to 15% by weight based on the total weight of the raw material. When included in the above content range, the adhesion of the raw material is excellent, so the yarn can be easily manufactured, and it prevents excessive hardness of the yarn from increasing, making it easy to knit or weave and providing excellent feel, and improving the uniformity of the yarn to prevent fluff (pilling). While preventing this from occurring, the strength and durability of the yarn can be excellent. For example, it may contain 5 to 10% by weight.

In one embodiment, the yarn may be formed from raw materials containing 10 to 35% by weight of waste fibers, 60 to 85% by weight of reinforcing short fibers, and 5 to 15% by weight of low melting point polyester short fibers.

In one embodiment, a conductive portion manufactured by knitting the yarn and the conductive yarn may be further formed on at least a portion of the armored portion. When forming the conductive part as described above, the touch screen device can be operated while wearing coated gloves, and the effect of preventing static electricity generation is excellent, so oil and gas can be handled. For example, the conductive portion may be formed in areas such as the fingertips and palm of the glove portion.

In one embodiment, the conductive yarn may include one or more of copper conductive yarn and carbon-based yarn. For example, the conductive yarn may include copper conductive yarn coated with copper (Cu) on the surface of a nylon-based yarn. For example, nylon-based yarn can be coated by impregnating it with a copper-containing solution.

The yarn may have a thickness (count) of Ne10/1 to Ne40/1. Under the above thickness conditions, it may be possible to manufacture knitted fabrics with excellent yarn durability and excellent feel.

In one embodiment, the yarn may have a twist number of 300 to 1000 TPM (twist per meter). Under the twist condition, the gloves can have a soft feel and minimize the occurrence of pilling.

In one embodiment, when the yarn is a 2-ply yarn, it may have a thickness of Ne20/2 to Ne40/2 and a twist number of 300 to 800 TPM. Under the above thickness and twist conditions, coated gloves can have a soft feel and excellent strength and mechanical properties.

In one embodiment, the yarn may have a tensile strength of 200 to 1,100 gf, an elongation of 6 to 13%, and a specific strength of 18 to 35 g/tex. Under the above conditions, the glove may have a hard touch and have excellent strength and mechanical properties.

In one embodiment, the tensile strength, elongation, and specific strength of the yarn may be measured using a measuring device. For example, it can be measured using a testing device manufactured by USTER.

In one embodiment, the armored portion may further include a covering yarn and include a double knitted fabric.

For example, the armor part may include a double knit fabric including one side manufactured by knitting the yarn and the other side manufactured by knitting the covering yarn.

When the covering yarn is further included, the elasticity of the glove can be further improved. In one embodiment, the covering yarn may include one or more of spandex yarn and nylon yarn. When the covering yarn is included, the elasticity and mechanical properties of the glove can be excellent. For example, the nylon yarn may include nylon draw textured yarn (DTY).

The covering yarn may have a thickness of 20 to 120 denier. For example, the covering yarn may be spandex/nylon false-twist yarn under the conditions of 20d/40d, 30d/40d, 40d/40d, or 40d/70d (denier).

In another embodiment, the glove knit fabric can be produced as a single layer (1 layer) by directly covering the upcycled yarn and spandex. The spandex may have a thickness of 40 to 70 denier.

Hereinafter, the configuration and operation of the present invention will be described in more detail through preferred embodiments of the present invention. However, this is presented as a preferred example of the present invention and should not be construed as limiting the present invention in any way. Any information not described here can be technically inferred by anyone skilled in the art, so description thereof will be omitted.

Examples and Comparative Examples

Example 1

(1) Upcycled yarn manufacturing: Put the fabric waste into the cutting equipment and cut it three times, then put it into the cotton (maigiri) equipment to tear and unravel the cut fabric waste, and then put it into the carnet equipment and make a plurality of yarns. Waste fabric was dismantled by passing through 2 to 8 drums tightly equipped with needles several times to produce waste fibers with a length of 15 to 50 mm.

Next, reinforcing single fibers (cotton fibers) with a length of 15 to 50 mm, a core containing low-melting polyester single fibers with a length of 15 to 50 mm (polyester fibers with a melting point of 265°C), and a core formed on the outer peripheral surface of the core with a melting point of 110 to 200 (including a sheath containing low-melting point polyester at ℃) is prepared, and the raw materials containing 15% by weight of waste fibers, 80% by weight of reinforcing short fibers, and 5% by weight of low-melting point polyester short fibers are mixed into a lump (blending). , the raw materials in the form of mixed lumps were loosened and mixed evenly (opening), and a mixed cotton process was performed in which impurities in the raw fibers were first removed (cleaning).

Sliver (sliver) was manufactured by combing (carding, sorting, and secondarily removing impurities) the raw material that had undergone the above-mentioned mixing process. Next, the sliver is put into a drawing facility, and 5 to 8 strands (bones) of the sliver are combined and stretched into one sliver, so that the thin and thick parts of each sliver complement each other to determine the thickness. The uniformity was adjusted to produce a rolled sliver.

Next, the drawn sliver was put into a spinning facility and spun out while being twisted to produce yarn (spun yarn). Yarn from the spinning facility was wound into a cheese shape. An enlarged photograph of the manufactured yarn is shown in Figure 4(a) below.

(2) Manufacture of upcycled coated gloves for work: The yarn prepared above was put into a glove knitting machine to manufacture a glove-shaped knitted fabric. A photograph of the knitted fabric is shown in Figure 4(b) below. Next, a coating solution (including nitrile-butadiene rubber and solvent) was applied (dipped) to the fingers and palm of the knitted fabric, washed and cured (dried) using a known method to prepare upcycled coated gloves for work. During the drying, melt adhesion of the low melting point polyester single fibers among the yarns occurred. Figure 5(a) below is a photo showing one side of the upcycled coated gloves of Example 1, and Figure 5(b) is a photograph showing the other side of the upcycled coated gloves of Example 1.

Example 2

Upcycled coated gloves were manufactured in the same manner as Example 1, except that upcycled yarn made by applying recycled polyester fiber was used as the reinforcing short fiber.

Example 3

Upcycled coated gloves were manufactured in the same manner as in Example 1, except that the yarn prepared in Example 1 and the covering yarn (spandex/nylon twisted yarn (DTY) 20d/40d) were added to the glove knitting equipment. The upcycled coated gloves of Example 3 include a glove portion formed of a double knit having one side manufactured by knitting the yarn and the other side manufactured by knitting the covering yarn, and a coating portion formed on the fingers and palm of the glove portion. It was formed in a structure that

Example 4

When manufacturing a glove-shaped knitted fabric by putting the yarn prepared in Example 1 into a glove knitting equipment, except that the finger portion of the knitted fabric was knitted with yarn and conductive yarn (copper (Cu) coated on a nylon base) to form a conductive portion. Upcycled coated gloves were manufactured in the same manner as Example 1.

Example 5

Upcycle coating in the same manner as Example 1, except that the coating solution (including nitrile-butadiene rubber, conductive material (conductive carbon black), and solvent) was applied (dipped) to the fingers and palm of the knitted fabric of Example 1. Gloves were manufactured.

Experiment example

Among the above examples, the physical properties of the yarn constituting the upcycled coated gloves of Examples 1 and 2 were evaluated as follows, and the results are shown in Table 1 below.

(1) Tensile strength (gf), elongation (%), and specific strength (g/tex): Tensile strength, elongation, and specific strength of the yarns of Examples 1 and 2 were measured using a USTER measuring device (USTER TESTER). were measured respectively.

(2) Number of twists (TPM) and thickness (Ne): The number of twists and thickness of the yarns of Examples 1 and 2 were measured by a known method.

(3) Appearance: The yarn was evaluated by observing fluffing (pilling) (◎: almost no pilling, ○: slight pilling, △: considerable pilling, X: very severe pilling).

Referring to the results in Table 1, Examples 1 and 2 were excellent in economic efficiency by recycling waste fibers, had excellent mechanical strengths such as tensile strength, elongation, and specific strength of the yarn, had excellent uniformity of the yarn, and reduced lint ( It was found that the occurrence of pilling) was significantly less than that of regular spun yarn.

Figure 5(a) below is a photograph of one side of the upcycled coated gloves of Example 1, and Figure 5(b) is a photograph of the other side of the upcycled coated gloves of Example 1. Referring to FIG. 5, Examples 1 and 2 manufactured coated gloves for upcycling work using discarded waste fibers, which were excellent in economic efficiency by minimizing the cost of discarding waste clothing, and were excellent in eco-friendliness by preventing environmental pollution. It was found that the strength and uniformity of the gloves were excellent, the generation of lint (pilling) was minimized, and the gloves had a soft feel and excellent sensory properties.

So far, the present invention has been examined focusing on the embodiments. A person skilled in the art to which the present invention pertains will understand that the present invention can be implemented in a modified form without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered from an illustrative rather than a restrictive perspective. The scope of the present invention is indicated in the claims rather than the foregoing description, and all differences within the equivalent scope should be construed as being included in the present invention.

Claims (12)

Cutting and dismantling fabric waste to produce waste fiber;
A mixing step of mixing raw materials containing 10 to 35% by weight of the waste short fibers, 60 to 85% by weight of the reinforcing short fibers, and 5 to 15% by weight of the low melting point polyester short fibers and removing foreign substances;
A carding step of manufacturing sliver using the raw materials that have undergone the mixing step;
A stretching step of manufacturing one sliver by combining and stretching the plurality of sliver strands;
A spinning step of manufacturing yarn using the drawn sliver;
Knitting the yarn to produce a glove-shaped knit; and
It includes applying a coating solution to at least a portion of the knitted fabric and curing it,
The low-melting polyester short fiber includes a core containing polyester fibers with a melting point of 250°C or higher and a sheath formed on the outer peripheral surface of the core and containing low-melting polyester with a melting point of 110 to 200°C,
A method of manufacturing upcycled coated gloves using waste fiber, characterized in that the coating liquid contains one or more of latex, polyurethane, polyvinyl chloride, natural rubber, and synthetic rubber.
delete The method of claim 1, wherein the yarn has a thickness of Ne10/1 to Ne40/1 and a twist number of 300 to 1000 TPM (twist per meter),
If the yarn is a 2-ply yarn, the thickness is Ne20/2 to Ne40/2 and the number of twists is 300 to 800 TPM,
The yarn is a method of manufacturing upcycled coated gloves using waste fibers with a tensile strength of 200 to 1,100 gf, an elongation of 6 to 13%, and a specific strength of 18 to 35 g/tex.
The method of manufacturing upcycled coated gloves using waste fibers according to claim 1, wherein the reinforcing short fibers include one or more of polyester fibers, cotton fibers, viscose rayon-based fibers, wool fibers, and acrylic fibers. .
The method of claim 1, between the drawing step and the spinning step,
A method of manufacturing upcycled coated gloves using waste fiber, further comprising a roving step of stretching and twisting the sliver.
The method of claim 1, wherein the step of manufacturing the glove-shaped knitted fabric is,
A method of manufacturing upcycled coated gloves using waste fiber, which is carried out including the step of knitting the yarn and the conductive yarn to form a conductive portion in at least a portion of the knitted fabric.
The method of manufacturing upcycled coated gloves using waste fiber according to claim 1, wherein the coating solution further contains a conductive material.
A glove portion containing knitted fabric; and
It includes a coating portion formed on at least a portion of the surface of the armored portion,
The coating portion includes one or more of latex, polyurethane, polyvinyl chloride, natural rubber, and synthetic rubber,
The low-melting polyester short fiber includes a core containing polyester fibers with a melting point of 250°C or higher and a sheath formed on the outer peripheral surface of the core and containing low-melting polyester with a melting point of 110 to 200°C,
The knitted fabric is an upcycle using waste fiber, characterized in that it is manufactured by knitting yarn containing 10 to 35% by weight of waste fiber, 60 to 85% by weight of reinforcing staple fiber, and 5 to 15% by weight of low melting point polyester staple fiber. Coated gloves.
delete The upcycled coated glove using waste fiber according to claim 8, wherein at least a portion of the glove portion is further formed with a conductive portion formed by knitting the yarn and the conductive yarn.
The upcycled coated glove using waste fiber according to claim 8, wherein the coating further includes a conductive material.
The method of claim 8, wherein the yarn has a thickness of Ne10/1 to Ne40/1 and a twist number of 300 to 1000 TPM (twist per meter),
If the yarn is a 2-ply yarn, the thickness is Ne20/2 to Ne40/2 and the number of twists is 300 to 800 TPM,
The above yarn is an upcycled coated glove using waste fiber with a tensile strength of 200 to 1,100 gf, an elongation of 6 to 13%, and a specific strength of 18 to 35 g/tex.