JPS602703A - Protective clothes - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to protective clothing made of wire or fiber strands and coated with an elastomer.

Cut-resistant clothing made of steel wire and aramid fibers has been proposed. The cut-resistant knitted glove has a core of two stainless steel strands and one aramid fiber strand extended in opposite directions by a plurality of aramid fiber strands or one aramid strand and a covering strand of nylon polyamide. Made from motsu yarn. Aramid fibers are strong and cut resistant, making gloves made from such materials extremely effective and useful in protecting against injuries from sharp tools, such as those used to cut and handle meat. Moreover, aramid yarn is somewhat abrasive (self-abrasive, causing wear and has a rough texture), and is easy to absorb dust, fat, blood, or other liquids, and can be easily cleaned as desired. I can't.

Moreover, detergents, light and water are prone to destroying aramid fibers. Furthermore, the aramid fibers that provide much of the glove's strength and cut resistance are relatively expensive. Although the use of coated nylon strands to form the yarn eliminates the above disadvantages, it also provides a significant improvement. For example, such gloves still lack liquid tightness, moisture resistance, slip resistance or heat resistance. As a result of each or a combination of these drawbacks, current gloves have their own limitations in use. The glove industry has long sought the development of gloves that are particularly lightweight, comfortable to use, have acceptable liquid tightness, are cut resistant, and are heat resistant at a reasonable price.

The present invention provides an improved cut-resistant, highly cut-resistant material that is moisture-resistant, oil-resistant, non-absorbent, slip-resistant, durable, comfortable to wear and use, and economically manufacturable. To provide flexible and lightweight clothing.

A garment according to the invention includes at least a portion of the wire and fiber strands interwoven with each other and at least a portion of the garment is covered with an adhesive elastomer coating. In embodiments of this invention, the coating is cured in situ.

The wire and fiber strands are combined into one yarn,
Preferably, frilled clothing is made of this. Comfortably
If used, garments are knitted with this yarn to increase flexibility. The yarn is preferably made of non-ttM steel wire, with a core of one or more wire strands, parallel fiber strands of synthetic fiber, preferably polyester fibers, and synthetic fiber in the form of a single thread or strand of polyester. The fibers are preferably made of at least two fibrous jackets, and this polyester Wfi? The jffl external waves are wound around the core material in opposite directions, one outside the other u11].

The garment is knitted with yarn and is coated with a suitable elastomeric material by dipping the garment to coat one side, for example the outer surface of a glove, and then heat curing the material.

The coating material must also have 0T properties, some degree of extensibility, toughness, strength, moisture resistance, sagging resistance, and good wearability. Nitrile rubber is particularly good. Slip resistance can be achieved by depositing an abrasive substance in or on the coating material.

The garment made as described above has substantially improved cut resistance due to this covering. What is most surprising here is that uncoated garments knitted with aramid and steel wire yarns have greater resistance than similarly constructed garments using other synthetic or natural fibers. However, such garments do not maintain their advantages over yarn garments using polyester fibers when the garment is laminated.

Moreover, it is difficult to adhere suitable coatings onto aramid and polyamide yarns.

Preferably, the garment is assembled with a fabric liner adhered to the knitted yarns by a coating that is transparent to the knitted yarns when applied, as is generally achieved by dipping.

A preferred product and yarn according to the invention is a protective glove consisting of a knitted yarn with a cloth liner covered with a coating of cured elastomeric material and adhered to the area with this coating, the yarn having a diameter of Habo 0.076 my
It has a core consisting of four strands of stainless steel of rt (0,003 in) and one parallel synthetic polymer fiber of 800-1500 denier, with a total core wire diameter of 0.51 mrtt (O1o20 in). ), the yarn has two strands of polyester fibers of 210 to 630 denier wrapped around a core in opposite directions, overlapping each other, and the a diameter of the yarn is 1,2
Not exceeding '7 mrn (0,050in), the gloves have high cut resistance, non-absorption to dust, fat, blood, etc., high slip resistance, excellent wearability, lightweight and stretchable. It has properties and flexibility.

These and other features and advantages of the invention will become apparent from the following description with reference to the drawings.

Protective gloves 10 which are one embodiment of the protective clothing according to the present invention
They are widely used when handling objects with sharp or rough edges, such as cutting metal or glass, and are used to prevent injury from sharp cutting blades and the like. Glove 1o is particularly suitable for use in processing meat, where a sharp hand-held knife is used. The invention also applies to other articles of clothing such as wrist protectors, protective sleeves, gaiters, etc.

The glove 10 has a yarn 12 shown in FIG. 3 which is inserted one fan as a glove body 13. The glove 10 has a knitted fabric liner 14 that is separately manufactured and inserted within the body 13. Elastomer material covering 16 is overlocked 20
It is fixed to the glove at the edge of the arm circumference portion 18 by. Coating 16 is formed by depositing body 13 and liner together by dipping them into a suitable rupture material in the form of a powder, removing the same, and curing the coating in place. This coating material passes through the knitted fabric to secure the liner 14 in place, but does not pass through the liner itself. This is shown in FIG.

The yarn 12 has a plurality of parallel wire strands 24 extending along the length of the yarn and one parallel fiber strand 2.
6 and two +a Kk spirally wound in opposite directions
The strands 28 are wound directly around the core 22 and the strands 30 are outer strands that are spirally wound around the strands 28 in the opposite direction.

The wire strand 24 is flexible and has high strength.
It is preferable to have high corrosion resistance.

Solid copper is a particularly preferred wire strand material, and hard-annealed, stainless steel wire is also preferred. Although the yarn core 22 of the illustrated embodiment employs four strands of wire, the number of wire strands can vary from one to twenty, with two to six strands being commonly used.

The diameter of the wire strand 24 is 0.025 to 0.25 m
m (o,ool ~0.010 in), with a range of 0.051~0.15 mm (0,002~0.0
0.06 in) and 0.076 mr
n (0,0031n) is most suitable. The preferred material is fully annealed scrap 304 stainless steel. 0.051
Wires with a diameter smaller than mrtt (0,0021n) have a short life and are t-valued, and do not offer any advantages over larger diameters. 015mri (0,006i
Wire diameters larger than n) are substantially less flexible. The single wire strand or wire strands for forming the core material 22 should not exceed 0.51 it (0.02 in), ignoring the fiber strands 26, and should not exceed 0.02 in. It is preferred that the overall diameter Vd be less than 0.25 in. (0.01 in.) in order to easily obtain a small overall diameter Vd. Rustless steel is a preferred wire material;
Although it is particularly suitable for packaging as clothing used in the food industry where cormorant erosion and food contamination must be avoided and where working conditions are often required, other materials are also used for various purposes, e.g. Steel, titanium, and other materials are used to make yarns that are flexible and strong enough to be used in clothing.

The parallel fiber strands 26 preferably have high tensile strength, are relatively non-absorbable, and have a thickness of 800 to 1500 denier. Suitable core fibers include polyester, aramid (aromatic polyamide), and polyamide multilayer fibers.

The preferred fiber is approximately 1000 denier polyester, which avoids the disadvantages of aramid.

The multiple fiber strands 26 within the core material have advantages.

Multi-N fibers are continuous rather than spun, and during assembly and subsequent use of garment products made from yarns,
It slides or flows with the rest of the core material. The high strength, multi-fiber core strands carry much, if not most, of the tensile loads that the yarn is subjected to during knitting and use. The fiber core strands also provide greater flexibility in the yarn core than an all-metal core. The fiber core strands also improve the basic quality of the yarn so that it becomes even more inward, even in the case of a so-called outer layer of the yarn. What is upper roll?
It involves wrapping the covering strands over the core material. For wire cores, the first winding or outer winding 28 has a tendency to slip longitudinally, and one fiber core strand has a close spacing between adjacent turns of the windings around the core or Provides greater uniformity of contact conditions. Additionally, the presence of fiber strands within the core material acts as a filler and aids in the cut resistance of the wire.

Outer wrappers 28, 30 are preferably synthetic polymer fibers in the form of threads or strands, each made of twisted fibers. Suitable fibers for the outer wrapper are multifilament or spun polyester or polyamide. Each strand 26.28 is from 210 to 630 denier,
In this example, it is approximately 440 denier. Preferably, the outer wrapping material 28.30 is polyester.

Although aramids and polyamides are effective in knitting high-strength, cut-resistant gloves that are used in uncoated form, these materials have drawbacks when the gloves are coated, as is the case with this invention. Indicated. Temperature measurements for aramid and polyamide are common, and aramid is more expensive than polyester.

A multi-woven outerwrap material 28.30 is preferred, but spun fibers having a cotton count of 1 to 60, preferably 15 to 35, can also be used. Single 1
%1. Textile type fibers are preferred over spun fibers because they are stiffer and less abrasive when twisted, and their tensile strength is greater for a given denier, making them less cut resistant. .

The outer wraps 28,30 are wrapped one after the other, adjacent to each other as shown. Each outer wrap is wound in opposite directions.

Two outer wraps are preferred, but more are possible. However, in order to balance the tension, it is preferable to provide an even number of outer wrapping members. In order to make the yarns equally easy to use on common knitting machines and to maintain visibility of the final product, the total diameter of the 16 yarns is 1.27 my ((λ05
Preferably, it does not exceed 0 in.

The body 13 is not made by known methods but is made of knitted fabric for reasons of visibility, comfort, seamless construction and manufacturing efficiency.

Preferably, it is knitted with a single yarn strand 12.

Preferred lengths 12 are each 0.076 m.
4 of 304 stainless steel with a diameter of rn (0,003 in)
A core of strands 22, one parallel strand 26 of 1ooo denier multifilament polyester, and two outer wrappings 28.30 of 440 denier multifilament fiber strands spirally wound in opposite directions. Begging. The overall diameter of the preferred yarn is
It is approximately 0.64 mrn (0,025 in).

Instead of one yarn, the body 13 could also use two yarns (ie, two yarns 12 could also be knitted, but smaller diameter yarns are preferred to reduce the weight of the glove).

Gloves knitted from a single yarn are further characterized in this invention because the strength and cut resistance of the garment is obtained to a greater extent from the core metal strands and coating 16 than from the textile outer wrapping 28.30. It is desirable. Therefore,
The use of a slightly larger core with four metal strands, and therefore a larger diameter yarn, is more effective than using thinner yarns and two-yarn knitting techniques for making single-yarn gloves. For uncovered gloves using substantially higher strength, cut resistant outer wrapping materials such as aramid, the opposite 414 configuration is used. A single yarn glove of this construction is also more flexible and less expensive than a two yarn knitted glove.

A second preferred construction of the body 13 uses a 1500 tenier aramid 1ll126 for the core and three pieces of stainless steel instead of four, in which case the pieces of stainless steel are respectively 0 and 10 m (0
,004 in) or the same as the preferred embodiment 7.

Liner 1 made of cotton or other suitable fabric such as polyester
4 is comfortable due to its flexibility and sweat absorption. gloves 1
0 fabrication, the liner 14 is placed on the pattern to ensure a proper fit. The body 13 is then placed over the liner, and the liner and body are immersed in the liquid elastomeric material in a molded manner. This dipping material penetrates the braided yarns of the body 13, but
Preferably, it does not transmit.

However, when the material hardens, it contacts the liner 14 and bonds it in place within the body 13.

The coated body and adhered liner are removed from the model after curing and the liner and body are then sewn around the arm with a stitch 20.

Nitrile rubber is a suitable elastomeric coating material because it has flexibility, extensibility, durability, oil resistance, moisture resistance, toughness, cut resistance, and slip resistance even at low temperatures. Nitrile rubbers include acrylonitrile rubber, acrylonitrile butadiene rubber, nitrile silicone rubber that combines the properties of silicone with the oil resistance of nitrile rubber, acrylonitrile butadiene rubber, and nitrile butadiene rubber. A suitable nitrile rubber is Ryco]d Ch
A butadiene acrylonitrile copolymer latex with reduced carboxyl groups made of p+n1cal Co, and containing zinc sulfide butyl timate, clay filler and pigment. Nitrile rubber is preferred, but other synthetic polymers (plastisols and organosols) and other elastomers such as natural rubber (polyisoprene) can also be used. The temporary wrapping material is hardened after the wrapped main body 13 is immersed in a bath of material to be Φ and taken out from the bath. The technique of making cloth gloves with elastomeric materials is known per se and is well known to those skilled in the art.

In a preferred embodiment, the glove 13 has continuous threads (i.e., no !N yarns) over the entire surface of the glove.
is soaked to make it sex. The thickness of the covering is necessary to completely cover the fabric, thereby preserving maximum flexibility, and ensuring the patterned surface obtained by the covered body yarns disposed on the loosely woven underside. Preferably, the minimum thickness is the same. The coating thickness is sufficient to make the glove impermeable to liquids, provide good wearability, and be thick enough to add cutability to the glove.
If nitrile rubber is used as the glove and the glove has the structure shown in Figure 1, the dry weight of the medium-sized teshigawa material will be approximately 37.2/(0,082 lb).
). The main body of M is almost 54.9? (0,1
21lb) and the liner is 47.79 (0,1051
lb), and the gloves are all about their strength, cut resistance and other! It is quite lightweight considering its LF quality.

After the glove has been immersed in and withdrawn from the coating material, drying in a nitrile debonder is carried out by heating the object on the body for a sufficient period of time.

Slip resistance during grasping is obtained by dosing or adding a friction agent to the surface of the glove to increase the coefficient of friction between the palm and fingers of the glove before the material to be protected is dried. Such materials include, for example, rockfall. Additionally or alternatively, a natural comb or cotton waste is used for the surface and a pattern is applied onto the glove in the palm and finger areas.

U.S. Patent Application No. 4.004.295, U.S. Patent Application No. 99
．． In comparison to the known aramid fiber gloves disclosed in No. 092 and No. 891,611, this glove exhibits a different Ifi'4 measure of cut resistance, and is free from temporary and h materials. It offers many advantages. For example, aramid It:r,
= IQ Kaede requires a chemical adhesive that is easily bonded to the JN '7FI adhesive, which is generally hazardous to food, limiting the use of this glove.

Furthermore, the sensuousness of the aramid in the supported material is due to the deterioration of the yarn.
bring about The use of even larger numbers of wire strands 24 is possible by using aramid polyester in the 4i1Gm product. Since aramid does not stretch, yarns used in the form of four or more wire strands are too stiff for primary use in knitting and when aramid is used as core and wrap material.

By using today's 41f construction and more extensible polyester, the large diameter add-on wire provides high cut resistance without undesirable stiffness. Regarding strength, when the yarn is subjected to strain, the readability and strength of the core fibers requires increased tensile strength of the steel utilized for cut resistance. The flexibility of the yarn also allows the use of elastomer coatings without exceeding the allowable stiffness in the final product.

From the above, it is clear that a new and improved protective garment is provided which is liquid-tight, does not absorb dust, fat, oil, blood or other fluids, is cut resistant, comfortable to wear, lightweight,
A garment is provided that is flexible, non-abrasive, and does not abrade objects or fabrics with which it comes in contact (unless the fabric is intentionally modified to increase friction). It also provides insulation against heat. When this clothing is in the form of gloves,
Has good feel and grasping ability.

While the glove industry has traditionally used layered materials to provide cut resistance and protection, this garment provides a highly cut resistant unitary construction. Its combined properties suit a wide range of applications.

Although the embodiments of the present invention have been described in detail above, it is clear that modifications can be made without departing from the scope of the claims of the present invention.

[Brief explanation of the drawing]

FIG. 1 is a front view of Embodiment a.11 of the present invention, FIG. 2 is an enlarged view of a part of FIG.
It is a front view of a part of constituent wood of the thing of figure f.

Claims (1)

[Claims] 1. A yarn consisting of a core material having a coating of one or more strands of flexible wire and one or more fiber strands;
A protective garment having a special ridged outer sheath of elastomeric material hardened on at least a portion of the yarn. 2. The protective garment of claim 1, wherein the core has fiber strands extending parallel to the one or more wires, and the one or more fiber strands are spirally wound around the core. 3. 2 to 2 core materials with a diameter of 0.025 to 0.25 mm
3. A protective garment according to claim 1 or claim 2, comprising 0 rA dullness r stainless steel wire strands. 4. Protective clothing according to any one of the above claims, wherein the total diameter of the yarns does not exceed 1.27 mmY. 5. 2 to 6 strands of annealed stainless steel wire, at least partially tubular and at least partially made of yarn, the yarn having a diameter between 0.051 and 0.15;
It has one parallel synthetic polymer R fiber strand with a thickness of 0.00 to 1500 deniers, and the total diameter of the wire strands is 0.51 or better than 8. 5. A protective garment according to any one of claims 1 to 4, comprising opposite directions around the material. 6. The protective clothing according to claim 5, wherein the core material has four strands of stainless steel with a diameter of 0.076 mm, and the clothing comprises a protective glove. 7. The protective clothing according to any one of the above claims, wherein the fiber strands are made of polyamide or polyester fibers. 8. Claims in which the elastomeric material coating is made of nitrile rubber; -9. Claims in which the clothing is a knitted fabric; -9. Claims in which the clothing is a knitted fabric. . 10. A protective garment as claimed in any one of the preceding claims, comprising a fabric liner adhered to the garment by a covering material.