US20070062173A1 - Cut and abrasion resistant yarn and protective garment made therefrom - Google Patents
Cut and abrasion resistant yarn and protective garment made therefrom Download PDFInfo
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- US20070062173A1 US20070062173A1 US11/210,336 US21033605A US2007062173A1 US 20070062173 A1 US20070062173 A1 US 20070062173A1 US 21033605 A US21033605 A US 21033605A US 2007062173 A1 US2007062173 A1 US 2007062173A1
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- yarn
- wrap
- low coefficient
- fiber
- cut
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- 230000001681 protective effect Effects 0.000 title claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 38
- 239000000835 fiber Substances 0.000 claims description 68
- 239000002783 friction material Substances 0.000 claims description 31
- 229920000728 polyester Polymers 0.000 claims description 26
- -1 polytetrafluoroethylene Polymers 0.000 claims description 14
- 229910001220 stainless steel Inorganic materials 0.000 claims description 13
- 239000011152 fibreglass Substances 0.000 claims description 10
- 238000009940 knitting Methods 0.000 claims description 10
- 239000004698 Polyethylene Substances 0.000 claims description 8
- 229920000573 polyethylene Polymers 0.000 claims description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
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Images
Classifications
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/442—Cut or abrasion resistant yarns or threads
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D19/00—Gloves
- A41D19/015—Protective gloves
- A41D19/01505—Protective gloves resistant to mechanical aggressions, e.g. cutting. piercing
- A41D19/01511—Protective gloves resistant to mechanical aggressions, e.g. cutting. piercing made of wire-mesh, e.g. butchers' gloves
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/24—Resistant to mechanical stress, e.g. pierce-proof
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/12—Threads containing metallic filaments or strips
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/38—Threads in which fibres, filaments, or yarns are wound with other yarns or filaments, e.g. wrap yarns, i.e. strands of filaments or staple fibres are wrapped by a helically wound binder yarn
Definitions
- the present invention relates to yarn for machine knitting and to safety garments made with the yarn.
- Gloves and other protective apparel are typically worn by individuals handling and processing food, such as individuals working in the meat packing industry.
- the gloves should be cut-resistant to maximize the useful life of the glove and to provide a degree of protection to the wearer against injury.
- the glove should not overly limit the wearer's needed dexterity and tactile sensitivity.
- U.S. Pat. No. 4,651,514 issued to Collett provides an example of a cut-resistant yarn.
- the disclosed cut-resistant yarn has a core of nylon with a first wrap of an aramid fiber and a second wrap of a textured nylon.
- the present invention provides a cut and abrasion resistant, knittable composite yarn that utilizes a strand or fiber that has incorporated therein a material that causes the outer surface of the fiber or strand to have lower coefficient of friction than fibers or strands of comparable denier and weight.
- a preferred suitable yarn is of a diameter suitably for machine knitting and is flexible enough to be used for making protective gloves.
- the yarn is of composite construction utilizing synthetic fibers and a cut-resistant material as part of the core.
- the yarn comprises a core having at least one fiber of a cut-resistant material within the core.
- the material of the core can be any cut resistant material such as but not limited to polyethylene, fiberglass and metal wire and can be any combination of cut-resistant materials as know to those of skill in the art.
- the core includes a strand of polyethylene, a stand of fiberglass material and stainless steel wire.
- the polyethylene that is typically employed has a denier in the range from about 215 to about 1200.
- the fiberglass that is typically employed has a size in the range from about 150 to about 450.
- the stainless steel wire is that typically used has a diameter of about 0.002 inches.
- the preferred embodiment includes a wrap about the core that comprises at least one strand or fiber having a low coefficient of friction material.
- a low coefficient of friction fiber is commercially know as Friction Free and is available from Friction Free Technologies, Inc. having a principal place of business at 30 East 39 th Street, New York, N.Y.
- the low coefficient of friction material incorporates polytetrafluoroethylene which provides a lower coefficient of friction throughout the fiber.
- the low coefficient of friction fiber that is typically used has a denier of about 70.
- the low coefficient of friction material may be combined with other materials, such as but not limited to polyester, to make up a wrap about the core.
- polyester fibers of low coefficient of friction material each having a denier of about 70, are combined with one or more polyester fibers to produce a wrap about the core.
- the polyester fiber combined with the low coefficient of friction material preferably has a denier ranging from about 70 to about 300.
- the yarn of the present invention includes a first wrap about the core and a second wrap about the first wrap where the second wrap includes the low coefficient of friction material.
- the first wrap comprises at least one or more polyester fibers having a denier ranging from about 70 to about 420.
- This first wrap is wrapped about the core at a rate ranging from about 8 to about 10 turns per inch.
- a second wrap is wrapped in an opposite direction about the first wrap and the second wrap includes at least one strand or fiber of a low coefficient of friction material. It is recognized that the second wrap can include at least one additional fiber of different material, such as polyester.
- the second wrap is wrapped about the first wrap at a rate of about 8 to about 10 turns per inch.
- the low coefficient of friction material preferably, is in the outermost wrap. This allows for the greatest abrasion resistance since this material will be the first to contact any abrasive surface.
- the low coefficient of fiction material can be employed in any internal wraps or in the core to aid or increase the cut and/or abrasion resistance of the garment. For instance, if a low coefficient of friction material is placed in the core it is also preferable to have the low coefficient of friction material in the outer wrap although it is not necessary.
- the fibers used in conjunction with the low coefficient of friction fibers are preferably polyester due to its comfort and lower cost.
- other fibers and cut-resistant fibers such as spun Kevlar, normal spun fibers, acrylic, liquid crystal polymer, polyolefin and the like may be employed along with the low coefficient of friction fibers.
- any combination of known cut-resistant fibers and any configuration may be employed with the low coefficient of friction fibers.
- the present invention is also directed to a method of making a cut and abrasion resistant garment, such as a glove, including a low coefficient of friction material.
- the method preferably includes the steps of providing a knittable, cut and abrasion resistant yarn comprising a cut-resistant core having at least one cut-resistant fiber, a first wrap about the core wherein said first wrap includes at least one fiber of a polyester material; and a second wrap about said first wrap wherein said second wrap includes at least one fiber including a low coefficient of friction material.
- the yarn is then knitted on a knitting machine in the form of a cut resistant garment such as a glove.
- FIG. 1 is a diagrammatic view of an article of apparel, i.e., a knitted glove, made of yarn embodying the present invention and shown in FIGS. 2 through 4 ;
- FIG. 2 is a fragmentary, diagrammatic view of a first yarn embodying the features of the present invention
- FIG. 3 is a fragmentary, diagrammatic view of a second yarn embodying the features of the present invention.
- FIG. 4 is a fragmentary, diagrammatic view of a third yarn embodying the features of the present invention.
- FIG. 5A is a fragmentary, diagrammatic view of a prior art yarn for comparison purposes.
- FIG. 5B is a fragmentary, diagrammatic view of a fourth yarn embodying the features of the present invention.
- the glove 10 depicted in FIG. 1 is exemplary of a safety article of apparel embodying the yarn of the present invention and is a safety or protective glove suitable to be worn by operatives in the food processing and other industries where sharp instruments or articles, such as knives, or material having sharp edges, for example, sheet metal, glass and the like, are handled.
- the glove is knitted from a multi-strand composite yarn in accordance with FIGS. 2-4 and 5 B.
- the glove 10 includes the usual finger and thumb stalls, 12 and 14 , respectively, and a wrist portion 16 incorporating an elastic thread or yarn and a cuff trim overwrapping 18 .
- the glove 10 is made using conventional methods and glove knitting machinery, such as a Shima Seiki glove knitting machine.
- FIGS. 2-4 and 5 B illustrate different embodiments incorporating the features of the present invention.
- a yarn 20 comprises a core 22 , a first wrap about the core 24 and a second wrap 26 about the first wrap 24 .
- the wrappings 24 and 26 include synthetic fibers and are wound about the core 22 .
- the second wrapping 26 is wrapped about the core 22 in an opposing direction than that of the first wrapping 24 .
- the fact that each wrappings 24 , 26 is wrapped about the core in an opposite direction than the previous wrapping has been known to balance the forces incident to the wrappings so the yarn has no unusual twist or tendency to coil and assists in holding the wrappings in place on the core 22 .
- the core 22 includes a strand 28 of a polyolefin material such as polyethylene (known in the industry as Spectra) having a denier of about 650, a second strand 30 being stainless steel wire having a diameter of about 0.002 inches, and a third strand 32 being a 150 denier fiberglass material.
- the strand 28 and the third strand 32 typically lay side by side having the second strand 30 of stainless steel wire wrapped about the first strand 28 and third strand 32 to complete the makeup of the core 22 .
- the first wrapping 24 is a single strand of 420 denier polyester wrapped at a rate of 8-10 turns per inch about the core 22 .
- the second wrapping 26 or outer wrap is wrapped about the first wrap 24 in an opposite direction as the first wrap 24 at a rate of 8-10 turns per inch.
- the second wrap 26 includes a first fiber 34 of 220 denier polyester and four additional fibers 36 each having a low coefficient of friction material and each fiber having a denier of 70.
- the fibers 34 and 36 of the second wrap can be intertwined or separate, depending on what effects are desired.
- the low coefficient of friction fibers 36 are typically extruded, impregnated, laminated or coated with a low coefficient of friction material added during the process of making the fiber.
- the low coefficient of friction material is polytetrafluoroethylene or commonly known and sold under the tradename Teflon®.
- Teflon® polytetrafluoroethylene or commonly known and sold under the tradename Teflon®.
- the construction of the low coefficient of friction fibers is further detailed in U.S. Pat. No. 6,596,207 to Gunn and U.S. Pat. No. 6,143,368 to Gunn, both of which are hereby incorporated by reference in their entirety.
- the yarn illustrated in FIG. 2 may be employed with a 13 gauge Shima knitting machine to knit a cut and abrasion resistant glove.
- FIG. 3 sets forth a second embodiment incorporating the features of the present invention.
- An alternative yarn 40 of the present invention includes a core part 22 A having a strand 44 of a polyolefin material such as polyethylene (known in the industry as Spectra) having a denier of 1200, a second strand 46 being a 150 size fiberglass material, and a third strand 48 being a 0.002 inch diameter stainless steel wire.
- the first strand 44 and the second strand 46 typically lay side by side with the third strand 48 of stainless steel wire wrapped about the first strand 44 and second strand 46 to complete the makeup of the core 22 A.
- a first wrap 24 A about the core 22 A is a polyester material that has a denier of about 420 and is wrapped about the core 22 A at a rate of about 8-10 turns per inch.
- a second wrap 26 A includes three fibers of material.
- the first fiber 50 is a polyester material having a denier of 300.
- the second and third fibers 52 are fibers which incorporate a low coefficient of friction material where each fiber has a denier of about 70.
- the fibers 50 and 52 of the second wrap 26 A can be intertwined with each other or wrapped separate, depending on the desired effects.
- the second wrap 26 A is wrapped about the first wrap 24 A in an opposite direction at a rate of 8-10 turns per inch.
- the yarn illustrated in FIG. 3 may be employed with a 7 gauge Shima knitting machine to knit a cut and abrasion resistant glove.
- FIG. 4 illustrates a yarn of a third embodiment 60 having a core 22 B, a first wrap 24 B about the core 22 B and a second wrap 26 B about the first wrap 24 B.
- the core 22 B includes a first strand 62 of a 450 size fiberglass material, a second strand 64 of a polyolefin material such as polyethylene (known in the industry as Spectra) that has a denier of 215, and a third strand 66 being stainless steel wire having a diameter of 0.002 inches.
- the first strand 62 and the second strand 64 typically lay side by side having the third strand 66 of stainless steel wire wrapped about the first strand 62 and second strand 64 to complete the makeup of the core 22 B.
- a first wrap 24 B is wrapped about the core 22 B and is made up of six strands 68 of polyester material where each individual strand has a denier of 70.
- the first wrap 24 B is wrapped about the core at a rate of 8-10 turns per inch.
- a second and outer wrap 26 B is wrapped about the first wrap 24 B and includes three strands 70 of polyester material each strand having a denier of 70 and three strands 72 of a material having a low coefficient of friction where each strand of low coefficient of friction material has a denier of 70.
- the second wrap 26 B is wrapped about the first wrap 24 B at a rate of 8-10 turns per inch in an opposite direction as the first wrap 24 B.
- the yarn illustrated in FIG. 4 may be employed with a 10 gauge Shima knitting machine to knit a cut and abrasion resistant glove.
- Stainless steel wire as used in the present invention has a diameter of about 0.002. Thicker diameters may be used where increased cut resistance is desired and smaller diameters may be employed where flexibility is more desired over cut-resistance.
- the various wrappings about the core can have from 2-20 turns per inch. Metal strands can also be employed in the wrappings and can have from 2 to 12 turns per inch.
- the core bundling wrappings, if present, can have from 2 to 20 turns per inch.
- the first wrapping about the core and additional wrappings will have from 8 to 12 turns per inch.
- the outer wrap 26 B has a total of six strands of fibers each having a denier of 70 for a total denier of the outer wrap 26 B of about 420.
- the depicted glove 10 in FIG. 1 when knit from any of the yarns illustrated in FIGS. 2-4 is a safety glove especially advantageous for use in the food processing industries and is highly cut and abrasion resistant, readily cleanable at high temperatures, comfortable to wear, attractive appearing, flexible and relatively non-absorbent, all of which are important in the food processing industry.
- the glove is highly chemical-resistant and fatigue resistant, and resistant to the transfer of heat or cold, is conformable, does not acquire a set during use, is non-shrinkable, is light in weight, and provides a secure grip.
- the following example compares the performance of a glove constructed with low friction yarn that is shown in FIG. 5B with a glove constructed of standard yarn that is shown in FIG. 5A .
- Both yarns had a 650 Spectra core 144 including two strands of 0.003 stainless steel wire 148 followed by a first wrap of 400 Kevlar 124 at 12 turns per inch and a third wrap 175 of 440 polyester at 8 turns per inch.
- the standard yarn includes a second wrap 150 of 650 Spectra at 8 turns per inch ( FIG. 5A ) while the low friction yarn includes a second wrap 250 of two strands of the low friction fiber at 8 turns per inch ( FIG. 5B ).
- the glove made with the low friction yarn exhibited a significant improvement in abrasion resistance while still maintaining acceptable cut resistance.
- the yarn of the invention has been described and shown incorporated into a knit glove, it is to be understood that the yarn of the present invention can be used to make other fabrics and articles of apparel, safety or otherwise, such as wrist guards, protective sleeves, gaiters, safety aprons, etc. for use in industries where cut and abrasion resistant safety apparel is needed.
Abstract
Provided is a cut and abrasion resistant yarn and safety garment made from such yarn. The yarn includes a cut-resistant core material, covered by a first wrap having at least one strand of a polymeric material wrapped about the core. A second wrap is included and is wrapped about the first wrap in an opposite direction. The second or outer wrap includes at least one strand having a low coefficient of friction. Also provided is a method of making a protective garment from the inventive yarn wherein the protective garment has increased cut and abrasion resistance.
Description
- The present invention relates to yarn for machine knitting and to safety garments made with the yarn.
- Gloves and other protective apparel are typically worn by individuals handling and processing food, such as individuals working in the meat packing industry. Preferably, the gloves should be cut-resistant to maximize the useful life of the glove and to provide a degree of protection to the wearer against injury. In addition, the glove should not overly limit the wearer's needed dexterity and tactile sensitivity.
- The disclosure of U.S. Pat. No. 4,651,514 issued to Collett provides an example of a cut-resistant yarn. The disclosed cut-resistant yarn has a core of nylon with a first wrap of an aramid fiber and a second wrap of a textured nylon.
- An example of a cut-resistant glove is provided by the disclosure of U.S. Pat. No. 5,568,657 issued to Cordova et al. “Comparative Example 10” of the Cordova patent discloses a yarn having a core of ECG 75 fiberglass filaments and 650 denier SPECTRA. overwrapped with counter opposing helixes of 650 denier SPECTRA. SPECTRA. is the name of a high-density polyethylene fiber manufactured by Honeywell. “Comparative Example 12” of the Cordova patent discloses a yarn having a core of ECG 75 fiberglass filaments and a 500 denier polyester fiber overwrapped with counter opposing helixes of the same 500 denier polyester fiber. Although the above referenced cut-resistant yarns, gloves and apparel are satisfactory for their intended purposes, there is a need for a yarn which provides both cut-resistant and abrasion-resistant properties. Protective gloves are quickly worn by sharp instruments, not just by direct contact of the instrument with the glove but also by “scratching” by the instrument over the glove. This “scratching” causes instruments to abrade the glove, thus, decreasing the useful life of the glove or garment.
- The present invention provides a cut and abrasion resistant, knittable composite yarn that utilizes a strand or fiber that has incorporated therein a material that causes the outer surface of the fiber or strand to have lower coefficient of friction than fibers or strands of comparable denier and weight. A preferred suitable yarn is of a diameter suitably for machine knitting and is flexible enough to be used for making protective gloves. Preferably, the yarn is of composite construction utilizing synthetic fibers and a cut-resistant material as part of the core.
- In the preferred embodiment, the yarn comprises a core having at least one fiber of a cut-resistant material within the core. The material of the core can be any cut resistant material such as but not limited to polyethylene, fiberglass and metal wire and can be any combination of cut-resistant materials as know to those of skill in the art. In one embodiment, the core includes a strand of polyethylene, a stand of fiberglass material and stainless steel wire. The polyethylene that is typically employed has a denier in the range from about 215 to about 1200. The fiberglass that is typically employed has a size in the range from about 150 to about 450. Further, the stainless steel wire is that typically used has a diameter of about 0.002 inches.
- The preferred embodiment includes a wrap about the core that comprises at least one strand or fiber having a low coefficient of friction material. One suitable low coefficient of friction fiber is commercially know as Friction Free and is available from Friction Free Technologies, Inc. having a principal place of business at 30 East 39th Street, New York, N.Y. The low coefficient of friction material incorporates polytetrafluoroethylene which provides a lower coefficient of friction throughout the fiber. The low coefficient of friction fiber that is typically used has a denier of about 70. In another embodiment, the low coefficient of friction material may be combined with other materials, such as but not limited to polyester, to make up a wrap about the core. In yet another embodiment, several fibers of low coefficient of friction material each having a denier of about 70, are combined with one or more polyester fibers to produce a wrap about the core. The polyester fiber combined with the low coefficient of friction material preferably has a denier ranging from about 70 to about 300.
- In yet another embodiment, the yarn of the present invention includes a first wrap about the core and a second wrap about the first wrap where the second wrap includes the low coefficient of friction material. Preferably, the first wrap comprises at least one or more polyester fibers having a denier ranging from about 70 to about 420. This first wrap is wrapped about the core at a rate ranging from about 8 to about 10 turns per inch. A second wrap is wrapped in an opposite direction about the first wrap and the second wrap includes at least one strand or fiber of a low coefficient of friction material. It is recognized that the second wrap can include at least one additional fiber of different material, such as polyester. The second wrap is wrapped about the first wrap at a rate of about 8 to about 10 turns per inch.
- In the several embodiments of the present invention, the low coefficient of friction material, preferably, is in the outermost wrap. This allows for the greatest abrasion resistance since this material will be the first to contact any abrasive surface. However, the low coefficient of fiction material can be employed in any internal wraps or in the core to aid or increase the cut and/or abrasion resistance of the garment. For instance, if a low coefficient of friction material is placed in the core it is also preferable to have the low coefficient of friction material in the outer wrap although it is not necessary.
- The fibers used in conjunction with the low coefficient of friction fibers are preferably polyester due to its comfort and lower cost. However, other fibers and cut-resistant fibers such as spun Kevlar, normal spun fibers, acrylic, liquid crystal polymer, polyolefin and the like may be employed along with the low coefficient of friction fibers. As is apparent to those of ordinary skill in the art in view of this disclosure, any combination of known cut-resistant fibers and any configuration may be employed with the low coefficient of friction fibers.
- The present invention is also directed to a method of making a cut and abrasion resistant garment, such as a glove, including a low coefficient of friction material. The method preferably includes the steps of providing a knittable, cut and abrasion resistant yarn comprising a cut-resistant core having at least one cut-resistant fiber, a first wrap about the core wherein said first wrap includes at least one fiber of a polyester material; and a second wrap about said first wrap wherein said second wrap includes at least one fiber including a low coefficient of friction material. The yarn is then knitted on a knitting machine in the form of a cut resistant garment such as a glove.
-
FIG. 1 is a diagrammatic view of an article of apparel, i.e., a knitted glove, made of yarn embodying the present invention and shown inFIGS. 2 through 4 ; -
FIG. 2 is a fragmentary, diagrammatic view of a first yarn embodying the features of the present invention; -
FIG. 3 is a fragmentary, diagrammatic view of a second yarn embodying the features of the present invention; -
FIG. 4 is a fragmentary, diagrammatic view of a third yarn embodying the features of the present invention; -
FIG. 5A is a fragmentary, diagrammatic view of a prior art yarn for comparison purposes; and -
FIG. 5B is a fragmentary, diagrammatic view of a fourth yarn embodying the features of the present invention. - The
glove 10 depicted inFIG. 1 is exemplary of a safety article of apparel embodying the yarn of the present invention and is a safety or protective glove suitable to be worn by operatives in the food processing and other industries where sharp instruments or articles, such as knives, or material having sharp edges, for example, sheet metal, glass and the like, are handled. The glove is knitted from a multi-strand composite yarn in accordance withFIGS. 2-4 and 5B. Theglove 10 includes the usual finger and thumb stalls, 12 and 14, respectively, and awrist portion 16 incorporating an elastic thread or yarn and a cuff trim overwrapping 18. Theglove 10 is made using conventional methods and glove knitting machinery, such as a Shima Seiki glove knitting machine. -
FIGS. 2-4 and 5B illustrate different embodiments incorporating the features of the present invention. Turing first toFIG. 2 , ayarn 20 comprises a core 22, a first wrap about thecore 24 and asecond wrap 26 about thefirst wrap 24. Thewrappings core 22. Thesecond wrapping 26 is wrapped about the core 22 in an opposing direction than that of thefirst wrapping 24. The fact that eachwrappings core 22. Thecore 22 includes a strand 28 of a polyolefin material such as polyethylene (known in the industry as Spectra) having a denier of about 650, asecond strand 30 being stainless steel wire having a diameter of about 0.002 inches, and athird strand 32 being a 150 denier fiberglass material. The strand 28 and thethird strand 32 typically lay side by side having thesecond strand 30 of stainless steel wire wrapped about the first strand 28 andthird strand 32 to complete the makeup of thecore 22. - The
first wrapping 24 is a single strand of 420 denier polyester wrapped at a rate of 8-10 turns per inch about thecore 22. Thesecond wrapping 26 or outer wrap is wrapped about thefirst wrap 24 in an opposite direction as thefirst wrap 24 at a rate of 8-10 turns per inch. Thesecond wrap 26 includes afirst fiber 34 of 220 denier polyester and fouradditional fibers 36 each having a low coefficient of friction material and each fiber having a denier of 70. Thefibers friction fibers 36 are typically extruded, impregnated, laminated or coated with a low coefficient of friction material added during the process of making the fiber. Typically the low coefficient of friction material is polytetrafluoroethylene or commonly known and sold under the tradename Teflon®. The construction of the low coefficient of friction fibers is further detailed in U.S. Pat. No. 6,596,207 to Gunn and U.S. Pat. No. 6,143,368 to Gunn, both of which are hereby incorporated by reference in their entirety. The yarn illustrated inFIG. 2 may be employed with a 13 gauge Shima knitting machine to knit a cut and abrasion resistant glove. -
FIG. 3 sets forth a second embodiment incorporating the features of the present invention. Analternative yarn 40 of the present invention includes acore part 22A having astrand 44 of a polyolefin material such as polyethylene (known in the industry as Spectra) having a denier of 1200, asecond strand 46 being a 150 size fiberglass material, and athird strand 48 being a 0.002 inch diameter stainless steel wire. Thefirst strand 44 and thesecond strand 46 typically lay side by side with thethird strand 48 of stainless steel wire wrapped about thefirst strand 44 andsecond strand 46 to complete the makeup of thecore 22A. Afirst wrap 24A about thecore 22A is a polyester material that has a denier of about 420 and is wrapped about thecore 22A at a rate of about 8-10 turns per inch. Asecond wrap 26A includes three fibers of material. The first fiber 50 is a polyester material having a denier of 300. The second andthird fibers 52 are fibers which incorporate a low coefficient of friction material where each fiber has a denier of about 70. Thefibers 50 and 52 of thesecond wrap 26A can be intertwined with each other or wrapped separate, depending on the desired effects. Thesecond wrap 26A is wrapped about thefirst wrap 24A in an opposite direction at a rate of 8-10 turns per inch. The yarn illustrated inFIG. 3 may be employed with a 7 gauge Shima knitting machine to knit a cut and abrasion resistant glove. -
FIG. 4 illustrates a yarn of athird embodiment 60 having a core 22B, afirst wrap 24B about thecore 22B and asecond wrap 26B about thefirst wrap 24B. The core 22B includes afirst strand 62 of a 450 size fiberglass material, asecond strand 64 of a polyolefin material such as polyethylene (known in the industry as Spectra) that has a denier of 215, and athird strand 66 being stainless steel wire having a diameter of 0.002 inches. Thefirst strand 62 and thesecond strand 64 typically lay side by side having thethird strand 66 of stainless steel wire wrapped about thefirst strand 62 andsecond strand 64 to complete the makeup of the core 22B. Afirst wrap 24B is wrapped about thecore 22B and is made up of sixstrands 68 of polyester material where each individual strand has a denier of 70. Thefirst wrap 24B is wrapped about the core at a rate of 8-10 turns per inch. A second andouter wrap 26B is wrapped about thefirst wrap 24B and includes threestrands 70 of polyester material each strand having a denier of 70 and threestrands 72 of a material having a low coefficient of friction where each strand of low coefficient of friction material has a denier of 70. Thesecond wrap 26B is wrapped about thefirst wrap 24B at a rate of 8-10 turns per inch in an opposite direction as thefirst wrap 24B. The yarn illustrated inFIG. 4 may be employed with a 10 gauge Shima knitting machine to knit a cut and abrasion resistant glove. - While specific deniers and other features of the preferred embodiments have been set forth, different values can be selected within acceptable ranges to provide useful cut-resistant yarns. The specific values selected will of course cause a variation in cut-resistance, flexibility, weight and thickness of the yarn and the fabric knitted therefrom, and cost. The preceding embodiments employ fibers having specific deniers, however, other known fibers may be used in their place. The cut-resistance of a yarn employing a metal wire is in part a function of the diameter of the metal wire. Multiple strands are advantageous for flexibility over one larger strand or the one strand of wire is combined with other strands of polymeric fibers. Other kinds of metal other than stainless steel may be employed, such as aluminum, copper, bronze and steel. Stainless steel wire as used in the present invention has a diameter of about 0.002. Thicker diameters may be used where increased cut resistance is desired and smaller diameters may be employed where flexibility is more desired over cut-resistance. The various wrappings about the core can have from 2-20 turns per inch. Metal strands can also be employed in the wrappings and can have from 2 to 12 turns per inch. The core bundling wrappings, if present, can have from 2 to 20 turns per inch. The first wrapping about the core and additional wrappings will have from 8 to 12 turns per inch. Further, in the preceding embodiments, a wrap that include several fibers of one or more materials each having the same or different deniers, the sum of the deniers of each fiber equals the total denier of the wrap. For instance, with regard to the third embodiment, the
outer wrap 26B has a total of six strands of fibers each having a denier of 70 for a total denier of theouter wrap 26B of about 420. - The depicted
glove 10 inFIG. 1 when knit from any of the yarns illustrated inFIGS. 2-4 is a safety glove especially advantageous for use in the food processing industries and is highly cut and abrasion resistant, readily cleanable at high temperatures, comfortable to wear, attractive appearing, flexible and relatively non-absorbent, all of which are important in the food processing industry. The glove is highly chemical-resistant and fatigue resistant, and resistant to the transfer of heat or cold, is conformable, does not acquire a set during use, is non-shrinkable, is light in weight, and provides a secure grip. The following example compares the performance of a glove constructed with low friction yarn that is shown inFIG. 5B with a glove constructed of standard yarn that is shown inFIG. 5A . Both yarns had a 650Spectra core 144 including two strands of 0.003stainless steel wire 148 followed by a first wrap of 400Kevlar 124 at 12 turns per inch and athird wrap 175 of 440 polyester at 8 turns per inch. The standard yarn includes asecond wrap 150 of 650 Spectra at 8 turns per inch (FIG. 5A ) while the low friction yarn includes asecond wrap 250 of two strands of the low friction fiber at 8 turns per inch (FIG. 5B ). -
Glove Made of Standard Yarn Glove Made with Low Friction Yarn Core: 650 Spectra & 2/0.003 Core: 650 Spectra & 2/0.003 SS Wire SS Wire 1st Wrap: 400 Kevlar (12) 1st Wrap: 400 Kevlar (12) 2nd Wrap: 650 Spectra (8) 2nd Wrap: 300/2 Friction Free (8) 3rd Wrap: 440 Polyester (8) 3rd Wrap: 440 Polyester (8) Cut Test CPPT(grams): 6591 CPPT(grams): 6314 CPPT(lbs.): 14.49 CPPT(lbs.): 13.89 Abrasion Weight Loss (1000 cycles) 0.45 Weight Loss (1000 cycles) 0.33 Total cycles: 9350 Total cycles: 10,500 - As can be seen from the test results above, the glove made with the low friction yarn exhibited a significant improvement in abrasion resistance while still maintaining acceptable cut resistance.
- While the yarn of the invention has been described and shown incorporated into a knit glove, it is to be understood that the yarn of the present invention can be used to make other fabrics and articles of apparel, safety or otherwise, such as wrist guards, protective sleeves, gaiters, safety aprons, etc. for use in industries where cut and abrasion resistant safety apparel is needed.
Claims (20)
1. A knittable cut-resistant yarn for use in protective wear comprising:
a core having at least one fiber of cut-resistant material; and
at least one wrap wrapped about the core wherein an outermost one of said at least one wrap includes at least one fiber comprising a low coefficient of friction material.
2. The yarn of claim 1 wherein said low coefficient of friction material comprises a polytetrafluoroethylene coating.
3. The yarn of claim 1 wherein said low coefficient of friction material comprises extruded polytetrafluoroethylene.
4. The yarn of claim 1 wherein said cut-resistant fiber of the core is selected from the group consisting of a polyethylene strand, a fiberglass strand, and a stainless steel wire.
5. The yarn of claim 4 wherein said stainless steel wire has a diameter of about 0.002 inches.
6. The yarn of claim 4 wherein said polyethylene strand has a denier ranging from about 215 to about 1200.
7. The yarn of claim 4 wherein said fiberglass strand has a size ranging from about 150 to about 450.
8. The yarn of claim 1 wherein said outermost wrap includes a plurality of fibers of a low coefficient of friction material and a plurality of fibers of a second material.
9. The yarn of claim 8 wherein said second material is polyester.
10. The yarn of claim 9 comprising three fibers of a low coefficient of friction material, each fiber of the low coefficient of friction material having a denier of about 70, and three fibers of a polyester material, each polyester fiber having a denier of about 70.
11. The yarn of claim 9 comprising two fibers of a low coefficient of friction material, each fiber of the low coefficient of friction material having a denier of about 70, and one fiber of a polyester material having a denier of about 300.
12. The yarn of claim 9 comprising four fibers of a low coefficient of friction material, each fiber of the low coefficient material having a denier of about 70, and one fiber of a polyester material having a denier of about 220.
13. (canceled)
14. The yarn of claim 1 wherein said at least one wrap comprises a polyester material having a denier of about 420.
15. The yarn of claim 1 wherein said at least one wrap comprises six fibers of a polyester material, each fiber of the polyester material having a denier of about 70.
16. The yarn of claim 1 wherein said at least one wrap comprises two strands of the low coefficient of friction material, each strand having a denier of about 300.
17. A method of constructing a cut and abrasion resistant glove comprising the steps of:
providing a knittable cut and abrasion resistant yarn comprising
a core comprising at least one cut-resistant fiber and
at least one wrap wrapped about the core, an outermost one of said at least one wrap including at least one fiber comprising a low coefficient of friction material; and
knitting said yarn on a knitting machine in the form of a glove.
18. The method of claim 17 wherein said low coefficient of friction material comprises a polytetrafluoroethylene coating.
19. The method of claim 17 wherein said low coefficient of friction material comprises extruded polytetrafluoroethylene.
20. A knittable cut-resistant yarn for use in protective wear comprising a core having at least one fiber of cut-resistant material, and a single wrap wrapped about the core and including at least one fiber comprising a low coefficient of friction material.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/210,336 US20070062173A1 (en) | 2005-08-24 | 2005-08-24 | Cut and abrasion resistant yarn and protective garment made therefrom |
PCT/US2006/032802 WO2007024872A2 (en) | 2005-08-24 | 2006-08-21 | Cut and abrasion resistant yarn and protective garment made therefrom |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/210,336 US20070062173A1 (en) | 2005-08-24 | 2005-08-24 | Cut and abrasion resistant yarn and protective garment made therefrom |
Publications (1)
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US20070062173A1 true US20070062173A1 (en) | 2007-03-22 |
Family
ID=37772285
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Application Number | Title | Priority Date | Filing Date |
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US11/210,336 Abandoned US20070062173A1 (en) | 2005-08-24 | 2005-08-24 | Cut and abrasion resistant yarn and protective garment made therefrom |
Country Status (2)
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US (1) | US20070062173A1 (en) |
WO (1) | WO2007024872A2 (en) |
Cited By (13)
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US20080289312A1 (en) * | 2005-08-01 | 2008-11-27 | Teruyoshi Takada | Composite Yarn and Cut-Resistant Glove Using the Yarn |
US20090183296A1 (en) * | 2008-01-23 | 2009-07-23 | Ansell Healthcare Products Llc | Cut, oil & flame resistant glove and a method therefor |
WO2009156379A1 (en) * | 2008-06-24 | 2009-12-30 | Dsm Ip Assets B.V. | Cut resistant fabric |
US20100126333A1 (en) * | 2008-11-25 | 2010-05-27 | Airbus Operations (Sas) | Process for localization of a long-member profile that is inserted between fibrous support preforms that are assembled for forming a composite-material part |
US20100300060A1 (en) * | 2009-05-26 | 2010-12-02 | Fu-Biau Hsu | Conductive yarn capable of withstanding dyeing, finishing and washing |
US20140090349A1 (en) * | 2012-09-10 | 2014-04-03 | Angela Fisher | Composite yarn for cut resistant fabrics |
CN106987957A (en) * | 2017-05-24 | 2017-07-28 | 东台市联翔纺织有限公司 | It is a kind of can oil stain preventing function fabric |
US20180087191A1 (en) * | 2016-09-27 | 2018-03-29 | Supreme Corporation | Conductive yarn/sewing thread, smart fabric, and garment made therefrom |
US20190166932A1 (en) * | 2017-12-05 | 2019-06-06 | Wells Lamont Industry Group Llc | Hydrophobic and oleophobic cut resistant yarn and glove |
WO2019143694A1 (en) * | 2018-01-16 | 2019-07-25 | Supreme Corporation | Conductive yarn/sewing thread capable of data/signal transmission having an exterior conductive wire, and smart fabric, and garment made therefrom |
US11131042B1 (en) * | 2020-12-16 | 2021-09-28 | Yong Gun KIM | High tenacity yarn and method of manufacturing glove using same |
US11478028B2 (en) | 2019-04-05 | 2022-10-25 | Wells Lamont Industry Group Llc | Disposable cut-resistant glove |
US11598027B2 (en) | 2019-12-18 | 2023-03-07 | Patrick Yarn Mills, Inc. | Methods and systems for forming a composite yarn |
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US9877529B2 (en) | 2013-03-15 | 2018-01-30 | World Fibers, Inc. | Protective glove with enhanced exterior sections |
US20150181956A1 (en) * | 2013-03-15 | 2015-07-02 | World Fibers, Inc. | Protective glove with enhanced exterior sections |
US10130128B2 (en) | 2013-03-15 | 2018-11-20 | World Fibers, Inc. | Cut resistant gloves and methods of making same |
AU2015271022B2 (en) * | 2014-06-05 | 2020-02-27 | World Fibers, Inc. | Protective glove with enhanced exterior sections |
FR3140637A1 (en) * | 2022-10-06 | 2024-04-12 | Sebeltech | Textile and device for increasing the grip of a tire on slippery ground |
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US20190166932A1 (en) * | 2017-12-05 | 2019-06-06 | Wells Lamont Industry Group Llc | Hydrophobic and oleophobic cut resistant yarn and glove |
WO2019143694A1 (en) * | 2018-01-16 | 2019-07-25 | Supreme Corporation | Conductive yarn/sewing thread capable of data/signal transmission having an exterior conductive wire, and smart fabric, and garment made therefrom |
US11478028B2 (en) | 2019-04-05 | 2022-10-25 | Wells Lamont Industry Group Llc | Disposable cut-resistant glove |
US11598027B2 (en) | 2019-12-18 | 2023-03-07 | Patrick Yarn Mills, Inc. | Methods and systems for forming a composite yarn |
US11131042B1 (en) * | 2020-12-16 | 2021-09-28 | Yong Gun KIM | High tenacity yarn and method of manufacturing glove using same |
Also Published As
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WO2007024872A2 (en) | 2007-03-01 |
WO2007024872A3 (en) | 2007-05-10 |
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