U.S. patent application number 14/022699 was filed with the patent office on 2014-04-03 for composite yarn for cut resistant fabrics.
The applicant listed for this patent is Dean Bavetta, ANGELA FISHER. Invention is credited to Dean Bavetta, ANGELA FISHER.
Application Number | 20140090349 14/022699 |
Document ID | / |
Family ID | 50383925 |
Filed Date | 2014-04-03 |
United States Patent
Application |
20140090349 |
Kind Code |
A1 |
FISHER; ANGELA ; et
al. |
April 3, 2014 |
COMPOSITE YARN FOR CUT RESISTANT FABRICS
Abstract
A cut resistant yarn includes a core-spun core. A first layer
includes a first filament made of a cut resistant material. The
first layer is wrapped around the core-spun core in a first
direction, A second layer including a second filament is wrapped
around the first layer in a second direction that is opposite of
the first direction.
Inventors: |
FISHER; ANGELA; (Palatine,
IL) ; Bavetta; Dean; (Philadelphia, MO) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
FISHER; ANGELA
Bavetta; Dean |
Palatine
Philadelphia |
IL
MO |
US
US |
|
|
Family ID: |
50383925 |
Appl. No.: |
14/022699 |
Filed: |
September 10, 2013 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
61699027 |
Sep 10, 2012 |
|
|
|
Current U.S.
Class: |
57/222 ; 57/15;
57/227; 57/230; 57/255 |
Current CPC
Class: |
D02G 3/12 20130101; D02G
3/38 20130101; D02G 3/047 20130101; D02G 3/367 20130101; D02G 3/442
20130101 |
Class at
Publication: |
57/222 ; 57/230;
57/227; 57/255; 57/15 |
International
Class: |
D02G 3/44 20060101
D02G003/44; D02G 3/12 20060101 D02G003/12; D02G 3/38 20060101
D02G003/38; D02G 3/04 20060101 D02G003/04 |
Claims
1. A cut resistant yarn comprising: a. a core-spun core; b. a first
layer including a first filament made of a cut resistant material
wrapped around the core-spun core in a first direction; and c. a
second layer including a second filament wrapped around the first
layer in a second direction that is opposite of the first
direction.
2. The cut resistant yarn of claim wherein the first filament of
the first layer is stainless steel.
3. The cut resistant yarn of claim 1 wherein the first filament of
the first layer is fiberglass.
4. The cut resistant yarn of claim 1 wherein the first filament of
the first layer has a diameter in the range of 0.0001'' to
0.003''.
5. The cut resistant yarn of claim 1 wherein the first layer is
wrapped in the Z-direction and the second layer is wrapped in the
S-direction.
6. The cut resistant yarn of claim 1 wherein the first layer is
wrapped in the S-direction and the second layer is wrapped in the
Z-direction.
7. The cut resistant yarn of claim 1 wherein the second filament of
the second layer is a textured filament.
8. The cut resistant yarn of claim 1 wherein the second filament of
the second layer is selected from the group consisting of
Para-aramid, Meta-aramid, UHMWPE, Polyester, Vectran, PPEK, Nylon
and Polypropylene.
9. The cut resistant yarn of claim 1 wherein the second filament of
the second layer has a linear mass density in the range of 40
denier to 650 denier.
10. The cut resistant yarn of claim 1 wherein the core-spun core
includes extruded fibers or resins that incorporate silver
particles.
11. A method of making a cut resistant yarn comprising the steps
of: a. spinning a core-spun core; b. wrapping a first layer
including a first filament made of cut resistant material around
the core-spun core in a first direction; and c. wrapping a second
layer including a second filament around the first layer in a
second direction that is opposite of the first direction.
12. The method of claim 11 wherein the first layer is wrapped in
the Z-direction and the second layer is wrapped in the
S-direction.
13. The method of claim 11 wherein the first layer is wrapped in
the S-direction and the second layer is wrapped in the
Z-direction.
14. The method of claim 11 wherein the first filament of the first
layer is stainless steel.
15. The method of claim 11 wherein the first filament of the first
layer is fiberglass.
16. The method of claim 11 wherein the first filament of the first
layer has a diameter in the range of 0.0001'' to 0.003''.
17. The method of claim 11 wherein the second filament of the
second layer is selected from the group consisting of Para-aramid,
Meta-aramid, UHMWPE, Polyester, Vectran, PPEK, Nylon and
Polypropylene.
18. The method o claim 11 wherein the second filament of the second
layer is a textured filament.
19. The method of claim 11 wherein the second filament of the
second layer has a linear mass density in the range of 40 denier to
650 denier.
20. The method of claim 11 wherein the core-spun core includes
extruded fibers or resins that incorporate silver particles.
Description
CLAIM OF PRIORITY
[0001] This application claims priority to U.S. Provisional Patent
Application No 61/699,027, filed Sep. 10, 2012, the contents of
which are hereby incorporated by reference.
FIELD OF THE INVENTION
[0002] The present invention relates generally to yams and fabrics
and, in particular, to a composite yarn fir making cut resistant
fabrics.
BRIEF DESCRIPTION OF THE DRAWINGS
[0003] FIG. 1 is a schematic illustrating a system and process for
manufacturing a core-spun yarn for use in an embodiment of the
composite yarn of the present invention;
[0004] FIG. 2 is an enlarged perspective view of core spun-yams
produced using the system and method of FIG. 1 for use in an
embodiment of the composite yam or the present invention;
[0005] FIG. 3 is a schematic of an embodiment of the composite yarn
of the present invention:
[0006] FIG. 4 is an alternative schematic view of the composite
yarn of FIG. 3.
DETAILED DESCRIPTION OF EMBODIMENTS
[0007] According to embodiments of the present invention, a
core-spun yarn is used to construct a composite, cut resistant yarn
for making cut resistant fabrics, The fabrics may be used for
making for example, gloves and other garments. In the following,
description, the terms filament, fiber and thread are used
interchangeably, while the term yarn is used to indicate a woven
combination of filaments, fibers or threads. In an embodiment of
the invention, the composite yarn is constructed from a core-spun
yarn that is wrapped in one direction with a filament made from a
cut resistant material such as, for example, stainless steel,
fiberglass or synthetic materials, and wrapped in the transverse
direction with an additional filament. In effect, embodiments of
the composite yarn of the invention are created by core spinning an
already core-spun yarn.
[0008] A system and process for making a core-spun yarn to serve as
the core of an embodiment of the composite yarn of the invention is
indicated in general at 10 in FIG. 1. As illustrated in FIG. 1, a
core yarn 12, which may be an elastomeric filament yarn, a regular
filament yarn, a textured yarn, or a previously spun yarn, is fed
into a front delivery roll 14 of the spinning frame. The core yarn
12 may consist of any of the materials listed, in column 1 of Table
1 below Sheath fibers 16, which may consist of any of the materials
listed in column 2 of Table 1, including one of the materials only
or a combination thereof, cover the core yarn 12 during the
spinning operation. The sheath fibers begin as roving 17, which as
known in the art is a condensed sliver that has been drafted,
twisted, doubled, and redoubled. The roving passes through drafting
rollers 18a and 18b prior to delivery to front delivery roll 14 for
the spinning; operation. As a result, a core-spun yarn 20 is
formed, Embodiments of the core-spun yarn are indicated at 20a and
20b in FIG. 2.
TABLE-US-00001 TABLE 1 Core-Spun Yarn Combinations for Core Cut
Resistant Yarn Member 1 2 CORE SHEATH Filament member of the or the
fibers wrapped around core-spun, core yarn the core filament
Fiberglass 75D to 450D Para-aramid fibers Para-Aramid 75D to 660D
Meta-Aramid Fibers Filament UHMWPE 100D to 600D UHMWPE chopped
fibers Filament Polyester, size, 70D to 600D Basalt Fibers Filament
Nylon size, 70D to 600D Cellulose Based Rayon Fibers Stainless
Steel size 0.001 to 0.0025 Cotton Vectran Polyester Nylon
[0009] As is known in the art, many of the materials listed in
Table 1 may take the form of extruded fibers and resins. Such
extruded fibers and resins may incorporate sifter particles for
anti-microbial or anti-odor properties as well as phosphorus for
resistance to flammability.
[0010] As noted previously, embodiments of the present invention
provide a cut resistant yarn consisting of the core-spun core (20
of FIG. 1 and 20a and 20h of FIG. 2) and two additional outer
wrapping layers. More specifically, with reference to FIG. 3, the
core-spun core yarn 20 (or 20a and 20b of FIG. 2) is wrapped with a
first layer in the L-direction using, a filament or yarn 22, which
includes a cut resistant material which may be, for example,
stainless steel, fiberglass or a synthetic material (such as
polyester, nylon, an aramid, etc.), If stainless steel or
fiberglass is used, it is preferably anywhere from 0.001'' to
0.003'' in diameter. Alternatively, the first layer may he in the
S-direction. Next, the core-spun core yarn (wrapped with the first
layer) is wrapped with a second layer in the S-direction for
Z-direction if the S-direction was used for the first layer) using
a filament or textured filament yarn 24. The filament 24 of the
second layer preferably has a linear mass density in the range of
40 denier to 650 denier. The textured filament preferably is any of
the following fibers: Para-aramid, Meta-aramid, UHMWPE, Polyester,
Vectran, PPEK, Nylon or Polypropylene.
[0011] The completed composite yarn is indicated at 30 in FIGS. 3
and 4. An alternative view of the yarn components is provided in
FIG. 4.
[0012] Using a core-spun core constructed of the materials of Table
I in combination with the first and second layers described above
provides the composite yarn with benefits and features that make it
a high performance yarn. More specifically, the composite yarn 30
allows for smaller gauge knitting capabilities while maintain high
performance properties previously only available in larger yarns
that combine fiber types at the yarn level and not the fiber level.
Embodiments of the composite yarn of the present invention
therefore provide combined fiber properties, and therefore product
features, on a more "micro" scale than previously available.
[0013] Furthermore, the loft, of the fibers around the core-spun
core provides comfort to the wearer of the final knit structure,
such as gloves, made from the composite yarn. In addition, the
composite yarn provides a second layer (24 of FIGS. 3 and 4) to
cover again a central filament such as glass or steel (22 of FIGS.
3 and 4) that may be more abrasive on its own when in contact with
skin.
[0014] The loft of the central bundle of filament plus fibers in
the core-spun core 20 of FIGS. 1 and 3 (or 20a and 20b of FIG. 2)
helps to embed the first layer wrap (22 of FIGS. 3 and 4). If this
wrap is a filament such as steel, the loft of the central bundle
allows the more abrasive filament 22 to embed itself and therefore
mask itself from the exterior of the resulting knit structure.
Again this adds comfort when compared to more traditional forms of
upwound yarns.
[0015] While the preferred embodiments of the invention have been
shown and described, it will be apparent to those skilled in the
art that changes and modifications may be made therein without
departing from the spirit of the invention, the scope of which is
defined by the appended claims.
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