JP2020534451A - Protective gloves with self-obstructive cuffs - Google Patents

Abstract

A glove (1) containing cut-resistant fibers, wherein the glove (1) includes a glove body (2) and a cuff (3), and the cuff (3) further defines an opening (4) in the glove (1). And has a circumferential inner surface that faces the body when worn, and the cuffs (3) further include a plurality of magnet pieces (5), where the gloves (1) are worn. When not, the magnet piece (5) tightens the cuffs (3) and closes the opening (4), gloves.

Description

The present invention relates to improvements in gloves containing cut resistant fibers and filaments.

Magnets are used to replace buttons relating to apparel, such as Albert's U.S. Patent Application Publication No. 2009/0178245; Horton's U.S. Pat. No. 9,210,953; and Boggs' U.S. Patent No. Some are as disclosed in specification 2,319,292. Such applications typically use magnets to hold together the overlapping edges of the garment while wearing the garment.

Gloves made of cut-resistant fibers are used in industry to protect workers' hands from cuts and abrasions from things like metal parts. For example, automobile factory workers wear protective gloves to protect their hands when handling metal hoods. Such gloves can become dirty with use and are washed. During the washing cycle, small pieces of metal collected on the outer surface of the glove during use can be washed off; and even transferred to the inside of the glove. Workers who subsequently wear washed gloves can now be injured by this metal residue present inside the gloves.

What is needed is a method of restricting foreign matter from entering the glove when it is not worn, especially when the glove is washed.

The present invention is a glove containing cut resistant fibers, including a glove body and cuffs, which further define an opening in the glove and provide an inner surface of the circumference facing the body when worn. Having, the cuffs further comprises a plurality of pieces of magnets, wherein when the glove is not worn, the pieces of magnets tighten the cuffs and close the opening, relating to the glove.

FIG. 1 is an explanatory view of a glove body, cuffs, and a glove having magnet pieces distributed on the cuffs. FIG. 2 is a perspective view of a glove having magnet pieces distributed on the cuffs and an opening for inserting a hand. FIG. 3 is a perspective view of a glove having magnet pieces distributed on the cuffs and having magnet pieces that tighten the cuffs and close the opening. FIG. 4 is a detailed view of the tightening cuffs given by the attractive force of the magnet piece. FIG. 5 is an explanatory diagram of possible polarities of the magnet pieces distributed on the cuffs of the glove. FIG. 6 is an explanatory diagram of possible polarities of the magnet pieces distributed on the cuffs of the glove. FIG. 7 is an explanatory diagram of possible polarities of the magnet pieces distributed on the cuffs of the glove. FIG. 8 is an explanatory view of a continuous elastomer band having distributed magnet pieces for insertion into glove cuffs.

1 and 2 illustrate a glove 1 including a glove body 2 and a cuff 3, where the cuff further defines a glove opening 4 for hand insertion, and the cuff faces the body when worn. It has an inner surface around the circumference. The cuffs further include a plurality of magnet pieces 5. As shown in perspective view 3 and detailed view 4, when gloves are not worn, the magnet piece 5 tightens the cuffs 3 and closes the openings together with the opposite sides of the inner surface of the cuffs together.

The glove body contains a fabric containing cut resistant fibers. The fabric may be a knitted or woven fabric or any other fabric, but is preferably a knitted fabric. The cuffs also preferably contain cut resistant fibers. In many cases, cufflinks are the same common type of fabric as the glove body. The glove body may have an uppermost side covering the back of the hand and a palm side covering the palm and is connected to the cuffs. Similarly, the cuffs may have a top side covering the back of the wrist (ie, adjacent to the back of the hand) and a bottom side covering the opposite side of the wrist (ie, adjacent to the palm). The cuffs are connected to the glove body and in a typically preferred configuration the gloves and cuffs are knitted directly from the yarn using an advanced knitting machine. The cuffs also preferably incorporate some elastomeric material, such as an elastomer yarn with elongation and recovery.

One preferred elastomer yarn uses spandex fibers; however, any fibers that generally have stretch and recovery can be used. As used herein, "spandex" has its usual definition: manufactured fibers in which the fibrogenic material is a long-chain synthetic polymer composed of at least 85% by weight of segmented polyurethane. Among spandex-type segmented polyurethanes, for example, U.S. Pat. Nos. 2,929,801; 2,929,802; 2,929,803; 2,929. , 804; No. 2,935,839; No. 2,957,852; No. 2,962,470; No. 2,999,839; And those described in the same No. 3,009,901.

In some processes for making spandex elastomer filaments, fusion jets are used to solidify the spandex filaments immediately after extrusion. It is also well known that dry spun spandex filaments are sticky immediately after extrusion. The combination of combining such groups of adhesive filaments with the use of a fusion jet produces a fusion multifilament yarn, which is then typically silicone or other finish before winding. It is coated with an agent to prevent sticking in the package. Fusion clustering of such filaments, which are actually a number of very small individual filaments that adhere to each other along their length, is in many respects superior to a single filament of spandex of the same linear density. ing.

The elastomer yarn used is preferably a continuous filament and may be present in the elastomer yarn in the form of one or more individual filaments or one or more fusion grouped filaments. However, it is preferred to use only one fusion grouped filament with the preferred elastomer yarn. The overall linear density of the elastomeric filaments in the relaxed state, whether present as one or more individual filaments or filaments of one or more fusion clusters, is generally at 17-560 denier (15-500 denier). A preferred linear density range is 44 to 220 decitex (40 to 200 denier). In some embodiments, coated elastomer yarns may be used; i.e., a yarn core containing at least one elastomer yarn or spandex yarn and one or more spirally wrapped around the elastomer yarn core or spandex yarn core. 20-300 denier (22-340 decitex) wrapping yarn, preferably a wrapping yarn containing an aliphatic polyamide, polyester, natural fiber, cellulose fiber, or a mixture thereof.

In addition to, or instead of, the use of elastomer yarn, cuffs may incorporate continuous or discontinuous elastomer bands. The discontinuous elastomer band means that the cuffs can contain one or more pieces or segments of elastomer band material. The use of elastomeric material not only allows the glove cuffs to gather around the wrist or grip the wrist tightly and keep the glove better on the hand while wearing, but also stretches and the hand is in the glove It may also be possible to get in and out of the glove through the opening 4.

The cuffs further include a plurality of pieces of magnets. By magnetism, it means a material that has its component atoms ordered to show its magnetic properties, eg, attracting other iron-containing objects, or aligning itself with an external magnetic field. Will be done. Typically, such magnet pieces are iron or metal alloys and are known as permanent magnets.

The magnet pieces have preferably smaller thickness dimensions, as well as larger dimensions, typically either effective length and width, or effective radius. The larger dimensions of the magnet pieces can have many shapes, and useful shapes include circular pieces, rectangular pieces, or square pieces. The size of the magnet pieces should match the size of the cuffs they are embedded in. Typically, the magnet pieces has larger dimensions than the results in larger size area of 4.5mm ² ~75mm ² (length × width, or the effective radius) of greater than dimension area of 12mm ² ~24mm ² A magnet piece having the above is preferable. While multiple pieces of magnet are distributed on the cuffs to allow the cuffs to stretch while wearing gloves, the pieces of magnets are also preferably individual magnet pieces that are separate magnets on the opposite side of the cuffs. It is positioned on the cuffs so that it can be closed by pulling the pieces together and tightening the cuffs. In some embodiments, the magnet pieces are sewn into the cuffs. This can be done by folding the ends of the cuffs over itself to form a circumferential pocket, followed by inserting and distributing magnet pieces, and then stitching to close the pocket. Preferably, additional stitches can be used to stabilize the desired circumferential position of the magnet pieces in the cuffs.

In one embodiment, the cuffs may incorporate a continuous elastomer band 6 having a magnet piece 5 as shown in FIG. In another embodiment, the cuffs may use a discontinuous elastomeric band with magnet pieces, as previously described herein. For example, two or more elastomer band pieces with magnet pieces can be incorporated into the cuffs without forming a continuous circumferential elastomer band around the wrist. The elastomeric band material can preferably be used in addition to, or instead of, the elastomeric yarn in the cuffs as the only elastomeric material in the cuffs.

Like the magnet pieces, preferably the elastomeric band or portion of the band is sewn into the cuffs, preferably in pockets formed by stitching; then the pockets are further closed with further stitching. When multiple elastomer band portions are used, preferably additional stitches are used to position and stabilize the portion in the cuff at the desired circumferential position.

Elastomer bands can be made from elastomeric polymers, silicone and polyurethane polymers are two such polymers in which they are useful; polyurethane polymers are the preferred material. The magnet pieces can be incorporated into the elastomer band by curing the elastomeric material in a band mold with magnet pieces located at selected intervals around the mold.

Other pieces, such as metal pieces that are not magnets but are attracted to or attracted to the magnet pieces, can be used in the cufflinks with the magnet pieces. These pieces may have the same general shape and size as the magnet pieces. In some embodiments, one side of the cuff may have a piece of magnet, while the other side has a piece of metal that is attracted by the piece of magnet; the piece of metal has a piece of metal on the opposite side of the cuff. Positioned on the cuffs so that they can be attracted, tightened and closed.

FIG. 3 is a perspective view and FIG. 4 is a detailed view of the glove, where the magnet piece 5 closes, ie, closes, the opening in the glove, resulting in debris entering. Can't. 5, 6 and 7 are simplified detailed views of some potential arrangements of the polarities of the four sets of magnet pieces 5 shown in FIG. 3 that generate a magnetic field between the opposite sides of the cuffs. The upper set of magnet pieces is located on the top side of the cuffs and the lower set of magnet pieces is located on the bottom side of the cuffs. As shown, the positive and negative properties can vary between pairs of magnet pieces, or each pair can have different polarities. Also, one set may simply be several pieces of metal that are attracted by the pieces of magnet. While four sets of magnet pieces are shown in these figures, any number of magnet pieces (or magnet pieces and metal pieces) can be used as long as the cuffs function as desired. In some preferred embodiments, the cuff preferably has at least three sets of magnet pieces, or magnets and metal pieces.

Gloves are self-obstructive when not worn. By self-occlusion, as shown in FIGS. 2 and 3, without substantial additional force other than placing unworn gloves on another surface, such as a pile of laundry or a flat table. It is meant that the magnetic force generated by the magnet pieces attracts and tightens the opposite side of the inner surface of the cuffs together, closing the opening 4. The magnetic force generated by the pieces of magnet tightens the two sides of the cuff together to prevent metal fragments from passing inside the glove when it is washed. In other words, when the glove is not worn, the piece of magnet tightens the cuff and the opposite contact on the inner surface of the circumference of the cuff closes the opening formed by the cuff and the debris enters the glove. To prevent. In one embodiment, when the glove is not worn, the top side of the cuff (hand / wrist back) is tightened to the bottom side (glove hand / wrist palm side).

In addition, the opposite sides of the inner surface of the cuffs can be separated without undue force to wear gloves. In general, the force between the opposing sides of the inner surface of the cuffs is to tighten the opposite sides of the cuffs together when the glove is removed and placed on a flat surface, and to maintain facing contact throughout the washing cycle. At least it should be appropriate. In some embodiments, the force required to either tighten or separate the opposite side is about 1-7 Newtons. In some preferred embodiments, the force required to either tighten or separate the opposite side is about 2 to about 5 Newtons. The force required to separate the opposite sides is that one side of the cuff is attached to a still life and then the other side is pulled with a digital dynamometer, eg, a dynamometer available from Pesola®, of the cuff. The force required to separate the opposite sides can be determined. Here, the force required to tighten the opposite side of the cuff is considered to be the same as the force required to separate the opposite side.

In some embodiments, cut resistant fibers are present in the glove, preferably in the form of yarn, although the preferred cut resistant fibers are organic fibers, either in staple or continuous filament form; however. , Inorganic fibers can also be used. The yarn can be a filament yarn, a textured yarn, a staple yarn, or a mixture of any of these. The fibers preferably have a diameter of 5 to 25 micrometers and a linear density of 0.5 to 7 decitex. When staple fibers are used in yarn, the staple fibers can have a preferred length of 2 to 20 centimeters, more preferably 3.5 to 6 centimeters.

Cut resistant fibers have a cut index of at least 0.8, preferably a cut index of 1.2 or higher. Most preferred fibers have a cut index of 1.5 or greater. As used herein, the incision index is 475 grams / fabric woven or woven from 100% of the fibers to be tested with an incision performance of 1 square meter (14 ounces / square yard). Yes, with either a gram weight per gram / gram or a centimeter-newton unit per gram / square meter. To determine the cut index, first use either CPPT Cut Device with ASTM F1790-15 or TDM Cut Device with either ASTM 2992-15 or ISO 13997-1999 to perform cut protection performance. The (Cut Protection Performance) (CPP) value is measured. The cut index is calculated by dividing the CPP value, either in grams or centimeters-newtons, by the areal density of the fabric tested in grams per square meter. Table 1 lists some useful fibers and their cut performance. The CPP values listed below are average fabric weights with an area density of approximately 475 grams / square meter (14 ounces / square yard). Individual measurements made from a series of fabric weights may have cut index values that differ slightly from the values below.

In some embodiments, the preferred cut resistant fiber is a para-aramid fiber. Para-aramid fibers mean fibers made from para-aramid polymers; poly (p-phenylene terephthalamide) (PPD-T) is the preferred para-aramid polymer. Homopolymers obtained from molar-to-molar polymerization of p-phenylenediamine and terephthaloyl chloride by PPD-T, and small amounts of other diamines with p-phenylenediamine, and small amounts of other diacids with terephthaloyl chloride. It means a copolymer obtained from the incorporation of chloride. Other diamines and other diamines can be used in amounts up to about 10 mol% of p-phenylenediamine or terephthaloyl chloride, or perhaps slightly higher amounts, provided that the other diamines are used. And only the condition is that the acid chloride does not have a reactive group that interferes with the polymerization reaction. PPD-T also means copolymers obtained from the incorporation of other aromatic diamines and other aromatic diate products, such as 2,6-naphthaloyl chloride or chloro- or dichloroterephthaloyl chloride. However, it is only required that other aromatic diamines and aromatic dioxides are present in an amount that does not adversely affect the properties of para-aramid.

Additives can be used with para-aramid in the fiber and as much as 10% other polymeric materials up to 10% by weight can be blended with the aramid or replaced with the diamine of the aramid. It has been found that copolymers can be used with other diamines, or as much as 10% of the other diamines that have been replaced by the diamines of aramid.

Para-aramid (p-aramid) fibers are generally spun by extrusion of a solution of p-aramid through a capillary into a coagulation bath. In the case of poly (p-phenylene terephthalamide), the solvent of the solution is generally concentrated sulfuric acid and the extrusion is generally carried out through an air gap into a cold aqueous coagulation bath. Such processes are generally described in US Pat. Nos. 3,063,966; 3,767,756; 3,869,429, and 3,869,430. It is disclosed in the specification. The p-aramid fiber is E.I. I. It is commercially available as Kevlar® fiber, available from duPont de Nemours and Company, and Twaron® fiber, available from Teijin Limited.

Other preferred cut-resistant fibers useful in the present invention are, for example, ultra-high molecular weight or stretch-cut chain polyethylene fibers generally prepared as discussed in US Pat. No. 4,457,985. Such fibers are commercially available under the trade names Dynema® available from DSM and Spectra® available from Honeywell.

One preferred and preferred cut resistant inorganic fiber is glass fiber. The terms glass fiber and fiberglass are used interchangeably herein and generally refer to fiberglass filament yarn. Glass fibers are formed by extruding fused silica-based or other formulations of glass into fine strands or filaments with a diameter suitable for textile processing. The two commonly used types of fiberglass are referred to as S-glass and E-glass. E-glass has good insulation properties and maintains those properties up to 1500 ° F (800 ° C). S-glass has high tensile strength and is harder than E-glass. Suitable glass fibers are described in B & W Fiber Glass, Inc. And available from several other fiberglass manufacturers. In some embodiments, the use of E-glass is preferred for cut resistant composite yarns.

Another preferred cut-resistant fiber is a copoly (p-phenylene / 3,4'-diphenyl ether terephthalamide) -based aramid fiber, such as that known as Technora® available from Teijin Limited. .. Less preferred, but still useful at higher weights, are fibers made from polybenzoxazole, anisotropic fused polyesters, polyamides; polyesters; and blends of preferred cut resistant fibers with less cut resistant fibers. Is.

Test method Cut resistance. The incision index is the incision performance of 1 square meter (14 ounces / square yard) of fabric woven or woven from 100% of the fibers to be tested, 475 grams / gram per square meter. It has either weight or units of centimeters-newtons per gram / square meter. To determine the cut index, first use either CPPT Cut Device with ASTM F1790-15 or TDM Cut Device with either ASTM 2992-15 or ISO 13997-1999 to perform cut protection performance. The (CPP) value is measured. The cut index is calculated by dividing the CPP value in either grams or centi-Newton by the areal density of the fabric being tested in grams per square meter.

Separation / tightening force. The force required to separate the opposite side of the tightening cuff is to attach one side of the cuff to a still life and then pull the other side with a digital dynamometer, eg, a dynamometer available from Pesola®. It can be determined by separating the opposite sides of the cuffs. As used herein, the force required to tighten the opposite side of the cuff is considered to be the same as the force required to separate the opposite side.

Example 1
Cut resistant gloves made from 720 decitex (650 denier) 100% cut resistant Kevlar® para-phenylene terephthalamide (aramid) spun yarn (Style 970 Z), which has a cotton count of 16/2 and It had a 7.86 twist / inch twist. These gloves were directly knitted with Shima Seiki 13 gauge knitting machine, model SFG-I L2 / L3. Gloves were knitted at a speed of 120 rpm on the knitting machine with 30 knitting stitches (according to Shima Seiki scale) to form size 9 gloves according to EN 420, except for cuffs having a length of 9.5 cm. Cuffs were knitted directly into the glove during the same process with the addition of an elastomer yarn of 53% polyamide and 47% elastodiene with a linear density of 2600 decitex supplied by Adatex Sa Industrial E Commercial.

Permanent magnets (model ZCE-V12-03-N40) were mounted on Systemmag S. A. Obtained from S. Cufflink the magnet by rotating the cuff to form a hem stitch, inserting the magnet (which is evenly distributed in the cuff), then sewing the closed hem stitch and enclosing the magnet in the cuff. Incorporated in. The magnet pieces were positioned on the cuffs so that the magnet pieces could be attracted and closed on the opposite side of the cuffs when the gloves were not worn. The force required to open the closed cuffs was 3N as measured by a Pesola® dynamometer.

Example 2
Example 1 is repeated, but similar results are obtained except that the combination of the magnet pieces and the metal pieces attracted by the magnet pieces is inserted into the cuffs and evenly distributed over the cuffs, rather than using all the individual magnets. ..

Example 3 and Example 4
For Example 3, Example 1 is repeated except that a continuous elastomer band with distributed magnet pieces rather than individual magnets is inserted into the cuffs. The elastomeric material in the band is in the form of a polyurethane elastomer matrix with permanent magnets, according to Systemmag S. A. It is available from S. Similarly, for Example 4, Example 2 is repeated using a continuous elastomer band having both the magnet pieces and the metal pieces rather than the individual magnet pieces and the metal pieces.

In both embodiments, the magnet pieces (or magnet pieces and metal pieces) in the band are positioned on the cuffs so that they attract the magnet pieces (or metal pieces) on the opposite side of the cuffs. Both gloves work with similar results.

Example 5 and Example 6
With respect to Examples 5 and 6, Examples 3 and 4 are repeated except that the discontinuous elastomer band is used in the cuffs. For Example 5, two parts of an elastomer band with distributed magnet pieces, each having a length of approximately 30% of the circumference of the cuff, rather than a continuous band, are inserted into the cuff and the two parts Place the cuffs on the top side of the wrist and on the bottom side (palm side) of the wrist. With respect to Example 6, a portion of the elastomer band having a distributed magnet piece and a portion of the elastomer band simply having a distributed metal piece are inserted into the cuffs, the two parts having one part on the top side of the wrist and the other. Placed on the cuffs with the portion of the wrist on the bottom side (palm side), each portion having the same length as in Example 5.

In both embodiments, the portion of the elastomer band is positioned on the cuff so that each piece of magnet attracts a piece of magnet (or piece of metal) on the opposite side of the cuff. Both gloves work with similar results.

Claims (9)

A glove containing cut-resistant fibers, including a glove body and cuffs, the cuffs further defining an opening in the glove and having a circumferential inner surface facing the body when worn.
The cuffs further include multiple pieces of magnets.
Here, when the glove is not worn, the magnet piece tightens the cuff and closes the opening, the glove. The glove according to claim 1, wherein the cuffs are tightened by attraction of the magnet piece on the opposite side of the cuffs. The glove according to claim 1 or 2, wherein the opening is closed by contact of the opposite inner surface of the cuff. The glove according to any one of claims 1 to 3, wherein the magnet piece is sewn into the cuff. The glove according to any one of claims 1 to 4, wherein the magnet piece is distributed in a circumferential pocket formed in the cuff. The glove according to any one of claims 1 to 5, wherein the magnet piece is distributed in an elastomer band incorporated in the cuffs. The glove according to any one of claims 1 to 6, wherein the cut-resistant fiber is aramid, polyethylene, glass, or a mixture thereof. The glove according to any one of claims 1 to 7, wherein the cuffs further include a piece of metal. The glove according to claim 8, wherein the magnet piece and the metal piece are on the opposite side of the cuffs.

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