U.S. patent application number 10/178417 was filed with the patent office on 2003-02-13 for packaging material and containers formed therefrom.
Invention is credited to Gipson, Kyle G., Godfrey, Thomas E..
Application Number | 20030031387 10/178417 |
Document ID | / |
Family ID | 26874285 |
Filed Date | 2003-02-13 |
United States Patent
Application |
20030031387 |
Kind Code |
A1 |
Gipson, Kyle G. ; et
al. |
February 13, 2003 |
Packaging material and containers formed therefrom
Abstract
The present invention relates generally to a packaging container
formed of a packaging material comprised of a textile layer of
woven polyester fabric and a thermoplastic layer of polyolefin.
Inventors: |
Gipson, Kyle G.;
(Simpsonville, SC) ; Godfrey, Thomas E.; (Moore,
SC) |
Correspondence
Address: |
Terry T. Moyer
P.O. Box 1927
Spartanburg
SC
29304
US
|
Family ID: |
26874285 |
Appl. No.: |
10/178417 |
Filed: |
June 24, 2002 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
60310771 |
Aug 8, 2001 |
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Current U.S.
Class: |
383/64 ; 383/104;
383/113; 383/117; 383/35 |
Current CPC
Class: |
B65D 29/02 20130101 |
Class at
Publication: |
383/64 ; 383/117;
383/104; 383/113; 383/35 |
International
Class: |
B65D 033/16; B65D
030/04 |
Claims
We claim:
1. A packaging container formed of a packaging material comprising:
a textile layer of woven polyester fabric; and a thermoplastic
layer of polyolefin.
2. The packaging container of claim 1, wherein the textile layer of
woven polyester fabric is comprised of warp and fill yarns, wherein
the warp yarns are comprised of 1/150/48 or 1/150/50 denier
textured polyester yarn, and wherein the fill yarns are comprised
of 1/150/48 or 1/150/50 denier textured polyester yarn.
3. The packaging container of claim 1, wherein the textile layer of
woven polyester fabric has a weave density in a range from about 50
to about 64 yarns per inch.
4. The packaging container of claim 1, wherein the thermoplastic
layer is polyolefin, and wherein the polyolefin is polyethylene or
polypropylene.
5. The packaging container of claim 4, wherein the thermoplastic
layer is polyethylene, and wherein the polyethylene is metallocene
catalyzed low density polyethylene.
6. The packaging container of claim 1, wherein the thermoplastic
layer of polyolefin has a softening point temperature lower than
the textile layer of woven polyester fabric.
7. The packaging container of claim 1, wherein the thermoplastic
layer of polyolefin has a softening point temperature at least
about 40 degrees C. lower than the textile layer of woven polyester
fabric.
8. The packaging container of claim 1, wherein the thermoplastic
layer of polyolefin has a thickness in a range from about 1.5 to
about 4.0 mils.
9. The packaging container of claim 1, wherein the thermoplastic
layer of polyolefin has a thickness in a range from about 2 to
about 3 mils.
10. The packaging container of claim 1, wherein the thermoplastic
layer of polyolefin has a thickness of about 3 mils.
11. The packaging container of claim 1, wherein the thermoplastic
layer of polyolefin is joined to the textile layer of woven
polyester fabric through lamination, extrusion coating, or bonding
with a bonding agent.
12. The packaging container of claim 1, wherein the textile layer
of woven polyester fabric is treated with one or more chemicals
selected from the group consisting of water repellant or stain
resistant agents, antimicrobial agents, antibacterial agents,
antifungal agents, flame retardants, UV inhibitors, antioxidants,
coloring agents, lubricants, fragrances, and antistatic agents.
13. The packaging container of claim 12, wherein the water
repellant or stain resistant agent is a fluorochemical.
14. The packaging container of claim 1, wherein the thermoplastic
layer of polyolefin is treated with one or more chemicals selected
from the group consisting of antimicrobial agents, antibacterial
agents, antifungal agents, flame retardants, UV inhibitors,
antioxidants, coloring agents, lubricants, fragrances, and
antistatic agents.
15. The packaging container of claim 1, wherein the packaging
container has a bottom, at least two side walls, and an open end,
and wherein the packaging material has edges.
16. The packaging container of claim 1, wherein the packaging
container is formed by folding the packaging material and applying
heat to the edges of the packaging material.
17. The packaging container of claim 1, wherein the packaging
material is rectangular in shape.
18. The packaging container of claim 1, wherein a closure is
attached to the packaging container, and wherein the closure is
selected from the group consisting of rail fastener, rail fastener
with slider, press to close, zipper, and hook and loop.
19. The packaging container of claim 1, wherein the packaging
container has one or more gussets in the bottom of the packaging
container.
20. The packaging container of claim 19, wherein the textile layer
of woven polyester fabric has been removed from the gussets.
21. The packaging container of claim 1, wherein the packaging
material is sufficiently stiff to allow the packaging container to
be self-supporting.
22. A packaging container formed of a packaging material
comprising: a textile layer of woven polyester fabric; and a
thermoplastic layer of metallocene catalyzed low density
polyethylene.
23. A packaging container formed of a packaging material
comprising: a textile layer of woven polyester fabric, wherein the
woven polyester fabric is comprised of warp and fill yarns, wherein
the warp yarns are comprised of 1/150/48 or 1/150/50 denier
textured polyester yarn, and wherein the fill yarns are comprised
of 1/150/48 or 1/150/50 denier textured polyester yarn; and a
thermoplastic layer of polyolefin.
24. A packaging container formed of a packaging material
comprising: a textile layer of woven polyester fabric, wherein the
woven polyester fabric is comprised of warp and fill yarns, wherein
the warp yarns are comprised of 1/150/48 or 1/150/50 denier
textured polyester yarn, and wherein the fill yarns are comprised
of 1/150/48 or 1/150/50 denier textured polyester yarn; and a
thermoplastic layer of metallocene catalyzed low density
polyethylene.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims priority to and the benefit of prior
filed U.S. Provisional Patent Application Serial No. 60/310,771,
filed Aug. 8, 2001, hereby incorporated by reference herein.
BACKGROUND
[0002] The present invention relates generally to materials for
packaging pouches, and the packaging containers formed
therefrom.
BRIEF DESCRIPTION OF THE DRAWINGS
[0003] FIG. 1 is an enlarged cross-sectional view of an embodiment
of packaging material of the present invention.
[0004] FIG. 2 is a view of a packaging container formed from the
packaging material in FIG. 1.
[0005] FIG. 3 is a plan view of a lay-out of packaging material in
FIG. 1 for forming the packaging container in FIG. 2.
[0006] FIG. 4 is a section view of the packaging container shown in
FIG. 2 which was taken along section line 4 of FIG. 2.
DETAILED DESCRIPTION
[0007] Referring now to the Figures, and in particular to FIG. 1,
there is shown an enlarged cross-sectional view of an embodiment of
packaging material 100 of the present invention. The packaging
material 100 generally includes a textile layer 110 and a
thermoplastic layer 120.
[0008] As illustrated in FIG. 1, the textile layer 110 is a woven
polyester fabric. The warp yarns of the textile layer 110 can be
1/150/48 or 50 denier textured polyester yarn, and the fill yarns
can be 1/150/48 or 50 denier textured polyester yarn. In one
embodiment, the weave density of the fabric ranges from about 50 to
about 64 yarns per inch.
[0009] Also as illustrated in FIG. 1, the thermoplastic layer 120
is a polyolefin. In one embodiment, the polyolefin can be a
polyethylene, such as metallocene catalyzed low density
polyethylene. In another embodiment, the polyolefin can be
polypropylene. In a preferred embodiment, the thermoplastic layer
120 will have a softening point temperature lower than the textile
layer 110. In a further preferred embodiment, the softening point
of the thermoplastic layer 120 is at least about 40 C. lower than
the textile layer 110. The thermoplastic layer 120 can range in
thickness from about 1.5 to about 4.0 mils, more preferably from
about 2 to about 3 mils. In one embodiment, the thermoplastic layer
120 is about 3 mils thick. The thermoplastic layer 120 can be
joined with the textile layer 110 through lamination, extrusion
coating, bonding with a bonding agent, or the like.
[0010] The textile layer 110 can be treated with a water repellant,
such as a fluorochemical, to provide the exterior of the textile
layer 110 with a water and/or stain resistance.
[0011] Various other treatments can be incorporated into the
textile layer 110, incorporated into the thermoplastic layer 120,
and/or disposed over the textile layer 110 of the material 100,
such as antimicrobial agents, antibacterial agents, antifungal
agents, flame retardants, UV inhibitors, antioxidants, coloring
agents, lubricants, fragrances, antistatic agents, or the like.
[0012] Referring now to FIG. 2, there is illustrated a packaging
container 200 formed from the packaging material 100 in FIG. 1. The
packaging container 200 generally includes a bottom 210, side walls
220, and an open end 230. As shown in FIG. 3, the packaging
container 200 can be formed by folding a rectangular section of the
packaging material 100 and applying heat to the edges 250 to form
the container shape. The packaging material 100 shown in FIG. 3 is
oriented with the thermoplastic layer 120 facing up and the textile
layer 110 facing down. The packaging material 100 is folded along
fold line B-B' such that fold line B-B' protrudes upwardly (out of
the page). The packaging material 100 is then folded along fold
lines A-A' and C-C' such that each of the fold lines A-A' and C-C'
protrude downwardly (into the page). As shown in FIGS. 2 through 4,
after the container shape is formed, a closure 240 can be
positioned inside the open end 230 of the container 200, and
secured by applying heat to the container 200 along the open end
230. The closure 240 can be a rail fastener, rail fastener with
slider, press to close, zipper, hook and loop, or the like.
[0013] In a further embodiment, as shown in FIG. 4, the textile
layer 110 of the material 100 can be removed in the gusset areas
261 and 262 prior to forming the container 200, in order to form
gussets in the bottom 210 of the container 200 for added support.
In one embodiment, the packaging material 100 has a sufficient
stiffness that the container 200 can stand on the bottom 210
without the material 100 folding over in the areas of the sides
220.
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