KR102387838B1 - Cut resistant glove and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a safety glove using a metal composite yarn and a method for manufacturing the same, and is a screening outer perimeter made of at least one metal yarn of tungsten yarn/stainless yarn/nitinol yarn, any one of polyester yarn or nylon yarn or polyethylene yarn Select or select two or more to use as the first auxiliary yarn, but divide the first auxiliary yarn into 2 strands and twist them in different directions around the core to form the primary covering yarn, and use high molecular weight/ultra-high molecular weight polyethylene yarn The metal composite yarn is formed by covering the second auxiliary yarn including the second auxiliary yarn on the outer periphery of the first covering yarn, and the safety device value is knitted using the metal composite yarn, but the metal composite yarn is used as an auxiliary excellent in the knitting process. By knitting gloves with an excellent knitting machine, the cut resistance and fit of the safety gloves knitted with the metal composite yarn are excellent, while the installation of the judges is easily bent or cut, so hand movement is free when wearing the gloves, so excellent workability can be secured. It relates to a safety glove using a metal composite yarn and a manufacturing method therefor.

Description

Safety gloves using metal composite yarn and manufacturing method thereof {CUT RESISTANT GLOVE AND MANUFACTURING METHOD THEREOF}

The present invention relates to a safety glove using a metal composite yarn and a method for manufacturing the same, and more specifically, a metal yarn is used as the screening, and the screening is performed using a first auxiliary yarn selected from polyester yarn, nylon yarn, or polyethylene yarn. The primary covering yarn is divided into 2 strands, but the first auxiliary yarn is twisted in opposite directions to prepare a first covering yarn, and then the primary covering yarn is a second auxiliary yarn containing a high molecular weight/ultra-high molecular weight polyethylene (HMWPE, UHMWPE) yarn. The metal composite yarn is manufactured by covering the The present invention relates to a safety glove using a metal composite yarn, and a method for manufacturing the same, so that the knitted safety glove can secure excellent wearability and workability while having excellent cut resistance.

In general, in industrial sites, various types of safety gloves are used to protect the hands of workers and to prevent slipping of products or tools. Safety gloves for preventing cuts with reinforced characteristics are used. In Europe and other countries, the use of safety gloves to prevent cuts is mandated by law.

Specifically, safety gloves for preventing cuts are mainly used in workplaces that use cutting tools such as knives or saws, such as meat processing and seafood processing, or in workplaces that handle sharp metal materials and metal products, such as automobile factories, steel mills, and shipyards. It is usually knitted using aramid or high molecular weight/ultra-high molecular weight polyethylene (HMWPE, UHMWPE) fibers.

However, the safety gloves using the above aramid and high molecular weight/ultra-high molecular weight polyethylene fibers have superior cutting strength compared to ordinary gloves, but most of them did not secure sufficient cutting strength with a cutting strength of 4 or less grades, but also meet European standards. It did not reach 'F' grade.

Accordingly, safety gloves using high denier thick aramid or high molecular weight/ultra-high molecular weight polyethylene fibers were manufactured to secure sufficient cutting resistance to prevent cuts. A problem occurred.

In addition, in the case of Dyneema yarn among ultra-high molecular weight polyethylene (UHMWPE) fibers, it is expensive and economically limited to use at work sites.

On the other hand, there are cases where wire or glass yarn is used instead of expensive dynemasa, but compared to the improved cutting resistance, it has no elasticity and it is not easy to bend and unfold, so it is not comfortable to wear and the workability is remarkably poor. Not only could it not be used as a glove for delicate work such as handling, but if a wire or glass wire is short-circuited, the end of the wire or glass wire protrudes to the surface of the glove, impairing the fit and injuring the hand of the glove wearer. There were also problems.

Patent Publication 10-2016-0139479

In the present invention, in order to solve the above problems, a metal yarn is used as a core, and the outer periphery of the screening is first covered using a first auxiliary yarn selected from polyester, nylon, or polyethylene, and then high molecular weight/ultra-high molecular weight An object of the present invention is to provide a safety glove and a method for manufacturing the same that have excellent cutting strength at a low price by secondary covering with a second auxiliary yarn containing polyethylene (HMWPE, UHMWPE) yarn and do not reduce wearing comfort.

A safety glove using a metal composite yarn and a method for manufacturing the same according to the present invention for achieving the above object is an outer perimeter made of at least one metal yarn of tungsten yarn / stainless yarn / nitinol yarn, polyester yarn or nylon yarn Alternatively, select any one of polyethylene yarns or select two or more and use them as the first auxiliary yarn, but divide the first auxiliary yarn into 2 strands and twist them in different directions around the core to form a primary covering yarn, and a high molecular weight / A second auxiliary yarn including an ultra-high molecular weight polyethylene yarn is covered secondarily on the outer periphery of the first covering yarn to form a metal composite yarn, and a safety glove is knitted using the metal composite yarn, but the metal composite yarn in the knitting process It is characterized in that the gloves are knitted with a double superior knitting machine by using it as an auxiliary superior.

And the present invention further includes an attachment forming process for forming an attachment (a highly brittle part) on the core made of metal thread by pressing the core at regular intervals, so that when a tensile force is applied over a certain level, such as bending a finger while using gloves, There is another feature in the configuration in which the installation is short-circuited to enable precise work in the worn state.

According to the present invention of the configuration as described above, the outside of the metal yarn is first covered with a first auxiliary yarn composed of polyester, nylon, or polyethylene yarn, and then covered with a second auxiliary yarn containing a high molecular weight/ultra-high molecular weight polyethylene yarn. By constructing safety gloves using metal composite yarn, the price is low compared to safety gloves made of only expensive yarns such as Dyneema yarn in the related art, and it is of sufficient grade (e.g., 'F' grade of European standards). It has the effect of satisfying the cutting strength.

In addition, when a tensile force is applied to the metal composite yarn by forming an attachment in the examination, the attachment is short-circuited, so the safety gloves knitted with the metal composite yarn can be increased, so actions such as bending fingers or clenching a fist are free, as a result This has the effect of providing a safety glove with excellent workability that can be used even for sophisticated work.

In addition, even if the examination made of metal thread is short-circuited, the end is not exposed to the surface of the glove by the double-covered second auxiliary yarn, and the metal composite yarn is used as an auxiliary excellent to be positioned on the outer surface of the glove. Since the inner surface of the glove has a thread free of metallic yarn, such as nylon yarn, so that the hand is not injured, it is more comfortable to wear compared to the conventional safety glove.

1 is a view showing an examination and a first auxiliary yarn constituting the primary covering yarn of the present invention;
2 is a view showing the metal composite yarn of the present invention;
3 is a view showing an embodiment of the metal composite yarn that has been subjected to the mounting and forming process in the present invention;
4 to 5 are views showing the mounting and forming process of the present invention;
6 is a view showing the working state of the safety glove according to the present invention;

A preferred embodiment of the present invention will be described in detail below with reference to the drawings.

As shown in FIGS. 1 and 2, the safety glove using the metal composite yarn according to the present invention is a core 10 made of at least one metal yarn of tungsten yarn/stainless steel yarn/nitinol yarn, and a polyester yarn or nylon yarn. Alternatively, after dividing the first auxiliary yarns 22 and 24 composed of any one selected from polyethylene yarns or a mixture thereof into two strands, and covering the first auxiliary yarn 22 of one of the two strands with the outer periphery of the examination (10) By covering the other first auxiliary yarns 24 on the outside thereof in different directions, the first auxiliary yarns 22 and 24 are twisted in different directions to form the primary covering yarn 30, high molecular weight/ultra-high molecular weight polyethylene yarn A metal composite yarn 50 is formed by secondly covering the second auxiliary yarns 42 and 44 including However, in the knitting process, the metal composite yarn 50 is used as an auxiliary excellent to knit gloves with a double excellent knitting machine.

In the above, the core 10 may be composed of at least any one metal yarn from among tungsten yarn/stainless yarn/nitinol yarn alone or in overlapping form. production cost can be reduced.

At this time, the metal yarn used as the screening 10 should satisfy the low-cost and sufficient cut resistance. To satisfy this, the tungsten yarn has a diameter of 20 to 30 μm, the stainless yarn has a diameter of 20 to 60 μm, and the nitinol yarn has a diameter of 20. It is preferable to configure the core 10 with a metal thread having a thickness of ~90 μm.

And the first auxiliary yarn 20 covered on the outer circumferential surface of the examination 10 uses only one of 70-400 denier nylon yarn, polyester yarn, or polyethylene yarn, or a mixture of two or more, and the first auxiliary yarn is 2 Divide into strands, and cover by making the 2 strands of the 1st auxiliary yarn tightly twisted in different directions (S and Z twist) under the condition of 1000~1500T/M (Twist per Meter) so that the screening 10 is not exposed to the outside. do.

On the other hand, the polyester yarn is inexpensive and can reduce the cost of safety gloves, and the fiber itself has no moisture content and low hygroscopicity, so it dries quickly because it hardly absorbs water. It is suitable for use as a first auxiliary agent that is primarily covered.

In addition, the polyester yarn is strong in frictional strength and heat, so that when used in safety gloves, the user's hands are safely protected and the durability of the safety gloves is improved.

In addition, the second auxiliary yarn may consist of only high molecular weight or ultra-high molecular weight polyethylene yarn, and in addition to using nylon yarn, etc., the second auxiliary yarn is divided into 2 strands and covered with the second auxiliary yarn, but the second auxiliary yarn is the outer side of the first auxiliary yarn and the twist direction Make sure that this is the opposite, and when using two second auxiliary yarns, make sure that the twist direction is also opposite between each second auxiliary yarn.

In the above, the second auxiliary yarn 42 composed of high molecular weight or ultra-high molecular weight polyethylene yarn uses 300-500 denier, and the second auxiliary yarn 44 composed of nylon yarn uses 50-100 denier, and in the embodiment of the present invention, the The second auxiliary yarn 44 made of nylon yarn is configured on the outermost side, and the second auxiliary yarn 42 made of high molecular weight or ultra-high molecular weight polyethylene yarn is configured on the inside thereof, so that the second auxiliary yarns 42 and 44 are twisted in the twist direction. make them opposite to each other.

On the other hand, the nylon yarn has excellent elasticity, has a soft touch, contamination is easily removed, dries quickly, has excellent strength, elongation, and toughness, and has high frictional strength, so that when applied to gloves, even when applied to gloves, gripping objects and friction It makes the life of the product longer, has excellent elasticity and does not wrinkle.

In addition, the high molecular weight or ultra high molecular weight polyethylene yarn is a material that has both the rigidity of a metal material and the flexibility of a plastic, and is strong in shock and compression and has excellent restoring force.

On the other hand, UHMWPE fiber (ultra high-molecular-weight polyethylene), which has a higher molecular weight than HMWPE, is a polyethylene fiber that greatly increases strength by highly orienting ultra-high molecular weight polyethylene. It has a density of 0.97 g/cm ³ compared to other fiber materials. Lightweight, does not absorb water, strength. Abrasion and elastic modulus are very high, so it is easy to work in post processes such as weaving or knitting, and it is chemically safe, has wide chemical resistance, and has excellent light resistance to UV rays, so physical properties do not deteriorate even when used underwater or outdoors.

In the above, 300-1500 T/M (TWIST PER METER) of the first auxiliary yarn of the two strands used for the first covering is applied, and 300-500 T/M is applied for the second covering.

In an embodiment of the present invention having such a configuration, using a 20㎛ diameter tungsten yarn as a core, and twisting two nylon yarns of 70de as a first auxiliary yarn at 400t/m in each S/Z/direction for the primary covering After forming the yarn, it was confirmed that the tensile strength of the metal composite yarn produced by twisting 400 de high molecular weight polyethylene yarn with 400 t/m of S twist on the outside was 13.53 gF/d, the density was 647.5 de, and the breaking load was 8760 g.

As another example, using tungsten yarn with a diameter of 20 μm as the core, and 2 strands of 70de nylon yarn as the first auxiliary yarn, twisting each at 1300 t/m in the S/Z/ direction to form a primary covering yarn, and then In the case of a metal composite yarn prepared by twisting 400de high molecular weight polyethylene yarn with S twist at 330t/m and twisting 70de nylon yarn at 330t/m in the Z direction on the outside, the tensile strength is 9.36 gF/d, and the density is 837de. , it was confirmed that the cutting load was 7834 g.

On the other hand, the screening 10 is an attachment forming process, that is, it is compressed at regular intervals so that attachments 12 with weak strength are formed at predetermined intervals as shown in FIG. 3 .

To this end, the examination 10 passes through a plurality of rollers 62 and 64 for compression as shown in FIG. The other roller 62 is flat or has a groove (not shown) in which the protrusion 66 is accommodated. Mounting 12 is formed with a reduced diameter of 30-60%.

In addition, the other roller 64 on which the protrusion 66 is formed is compressed while heat is transferred and the part of the core 10 in contact with the projection 66 is heated to form the mounting portion 12 more easily, at this time the core 10 is formed. Since the heat is moved along the other side roller 62 to which no heat is transmitted, heat is not transmitted to the core 10 except for the portion in contact with the protrusion 66 , so that the attachment 12 is formed only in a part of the core 10 .

As another example, as shown in FIG. 5 , the examination 70 is narrowly formed at the lower longitudinal end and the attachment is formed while passing through the press 72 that reciprocates up and down at regular intervals. A guide 76 having a guide groove 75 formed thereon is provided on the upper portion of the die 74 through which the examination 10 passes in order to prevent it from happening.

When knitting with the metal composite yarn to which the core 10 configured as described above is applied, the core may be cut by bending the fingers, etc., as shown in FIG. Since it still exists, when applied to safety gloves, the cut resistance of the gloves is maintained while maximizing elasticity and flexibility.

On the other hand, in the safety glove knitting process using the metal composite yarn, the main superiority is a nylon yarn having a diameter of 40 to 150D, and a covering yarn such as a span yarn having a diameter of 40 to 150D is applied, and the auxiliary superiority is of the present invention By applying the metal composite yarn, the structure is designed so that the nylon span covering yarn on the inside of the knitted fabric and the metal composite yarn come on the outside, and it is knitted with a 13 gauge double superior knitting machine.

The safety glove of the present invention manufactured in this way has very good cutting resistance, but has a thin diameter, has self-elasticity, and is soft to the touch. , in the metal composite yarn, the examination composed of the metal yarn is not directly exposed to the working environment, but is covered and protected by the primary and secondary covering yarns of the outer surface, and as a result, the primary and secondary covering yarns of the outer surface are worn out or damaged. Safety and service life are greatly improved, such as preventing the loss of the original function of the knitted fabric even if it is lost.

On the other hand, the safety gloves manufactured as described above can be used by coating the silicone according to the intended use.

10: Examination 12: Installation
22, 24: 1st auxiliary thread 30: 1st covering thread
42, 44: second auxiliary element 50: metal composite yarn

Claims (5)

It consists of any one selected from tungsten yarn with a diameter of 20 to 30 μm, stainless yarn with a diameter of 20 to 60 μm, or nitinol yarn with a diameter of 20 to 90 μm, or a mixture thereof, and an external force is applied to install ( 12) is formed by the examination (10) outsourcing,
The first auxiliary yarns 22 and 24 composed of any one selected from polyester yarn, nylon yarn, or polyethylene yarn or a mixture thereof are divided into two strands, and the first auxiliary yarn 22 of one of the two strands is evaluated (10). ) After covering with the outer periphery, the primary covering yarn 30 is formed by covering the other first auxiliary yarn 24 on the outside in different directions,
The metal composite yarn 50 is formed by covering the second auxiliary yarns 42 and 44 including the high molecular weight or ultra high molecular weight polyethylene yarn on the outer periphery of the first covering yarn 30,
Safety gloves using a metal composite yarn, characterized in that it is knitted using the metal composite yarn (50), and can be easily stretched while the attachment (12) is short-circuited when a tensile force is applied to the metal composite yarn (50).
The safety glove using a metal composite yarn according to claim 1, wherein a double superior knitting machine is used when knitting the glove, and a metal composite yarn is used as an auxiliary excellent yarn to form the outer surface of the knitted glove with the metal composite yarn. .
The method according to claim 1 or 2, wherein the second auxiliary yarn is composed of a high molecular weight or ultra high molecular weight polyethylene yarn and a nylon yarn, and a second auxiliary yarn 42 composed of a high molecular weight or ultra high molecular weight polyethylene yarn is formed on the outside of the primary covering yarn, , a second auxiliary yarn 44 made of nylon yarn is formed on the outside of the second auxiliary yarn 42 made of high molecular weight or ultra-high molecular weight polyethylene yarn, and the second auxiliary yarns 42 and 44 are twisted in opposite directions. Safety gloves using a metal composite yarn, characterized in that.
delete By applying an external force to the core 10 made of tungsten yarn with a diameter of 20 to 30 μm, stainless yarn with a diameter of 20 to 60 μm, or nitinol yarn with a diameter of 20 to 90 μm, or a mixture thereof, by forming,
As the outer periphery of the core 10 on which the attachment is formed, the first auxiliary yarns 22 and 24 composed of any one selected from polyester yarn, nylon yarn, or polyethylene yarn or a mixture thereof are divided into two strands, and one of the two strands is divided into two strands. The first covering yarn 30 is formed by covering the first auxiliary yarn 22 of
The metal composite yarn 50 is formed by secondly covering the second auxiliary yarns 42 and 44 including high molecular weight or ultrahigh molecular weight polyethylene yarns on the outer periphery of the first covering yarn 30,
The metal composite yarn 50 is used to knit the glove, and when a tensile force is applied to the metal composite yarn 50, the attachment 12 is short-circuited and the glove can be easily stretched. Manufacturing method of safety gloves.

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