US3756300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic mesh bag
Assignee: US Netting Inc
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Filing: 1971-09-20
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Granted: 1973-09-04
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Expires: 1991-09-20
Abstract
Abstract A seamless plastic mesh bag is made from a melt of thermoplastic by forming an open mesh network of plastic strands terminating in a selvage of thickened cross-section and then stretching the mesh. The selvage forms the upper rim of the finished bag and may include integral handles and latching closures. The stretched open mesh forms the bag body. The stretching may include molecular orientation, and is accomplished by moving a mandrel against the mesh. Suitable apparatus produces bags in a desired variety of sizes and shapes.
Inventors
- 👤 G Nalle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:14
CPC Classifications
B; B29; B29C; B29C51/00; B29B; B29B13/00; B29B13/02; B29B13/023; B29C31/00; B29C31/004; B29C51/04; B29C51/18; B29C51/20; B29C51/22; B29C51/26; B29C51/42; B29C51/421; B29C51/424; B65; B65D; B65D29/00; B65D29/04; B29C51/08; B29L; B29L2031/00; B29L2031/712; B29L2031/7128; B29L2031/737
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
87 words
A blank deformable to constitute a seamless plastic mesh bag, comprising: a substantially two-dimensional, seamless open mesh network of flexible thermoplastic strands, said network having a single selvage edge defining a closed figure, said selvage being of relatively greater cross section than the strands of said network, and said strands being deformable with respect to said selvage when said selvage is disposed in a plane to define an open mesh surface bounded by said selvage and having a significant dimension in a direction normal to said plane.
Claim 2
Dependent Claim
87 words
A blank deformable to constitute a seamless plastic mesh bag, comprising: a substantially two-dimensional, seamless open mesh network of flexible thermoplastic strands, said network having a single selvage edge defining a closed figure, said selvage being of relatively greater cross section than the strands of said network, and said strands being deformable with respect to said selvage when said selvage is disposed in a plane to define an open mesh surface bounded by said selvage and having a significant dimension in a direction normal to said plane.
Claim 3
Dependent Claim
39 words
A blank deformable to constitute a seamless plastic mesh bag as recited in claim 1, wherein some of the strands of said network are adapted to be at least partially molecularly oriented in the direction normal to said plane.
Claim 4
Dependent Claim
23 words
A blank deformable to constitute a seamless plastic mesh bag as recited in claim 1 and having a handle disposed on said selvage.
Claim 5
Dependent Claim
25 words
A blank deformable to constitute a seamless plastic mesh bag as recited in claim 1, including handle means disposed in opposing relation on said selvage.
Claim 6
Dependent Claim
38 words
A blank deformable to constitute a seamless plastic mesh bag as recited in claim 1, including hinge means formed into said selvage at opposed points thereon permitting opposing halves of said selvage to be folded into abutting relationship.
Claim 7
Dependent Claim
36 words
A blank deformable to constitute a seamless plastic mesh bag as recited in claim 5, including means to hold said opposing halves of said selvage in abutting relationship for maintaining said bag in a closed condition.
Claim 8
Dependent Claim
26 words
A blank deformable to constitute a seamless plastic mesh bag as recited in claim 1, wherein the closed figure defined by said selvage approximates a circle.
Claim 9
Dependent Claim
26 words
A blank deformable to constitute a seamless plastic mesh bag as recited in claim 1, wherein the closed figure defined by said selvage approximates a rectangle.
Claim 10
Dependent Claim
24 words
A blank deformable to constitute a seamless plastic mesh bag as recited in claim 1, wherein said network comprises a matrix of four-sided polygons.
Claim 11
Dependent Claim
40 words
A blank deformable to constitute a seamless plastic mesh bag as recited in claim 9, wherein each of said polygons has a short axis generally disposed toward the center of said network and a long axis generally parallel said selvage.
Claim 12
Dependent Claim
33 words
A blank deformable to constitute a seamless plastic mesh bag as recited in claim 10, wherein the closed figure defined by said selvage approximates a circle having opposing handle members outwardly disposed thereon.
Claim 13
Dependent Claim
32 words
A blank deformable to constitute a seamless plastic mesh bag as recited in claim 11, wherein the thickness of said selvage is greater than the thickness of the strands of said network.
Claim 14
Dependent Claim
22 words
A blank deformable to constitute a seamless plastic mesh bag as recited in claim 9, including hinge means disposed in said selvage.
Claim 15
Dependent Claim
53 words
A blank deformable to constitute a seamless plastic mesh bag as recited in claim 1, wherein said network comprises a matrix of mesh openings, each of said mesh openings having a long dimension generally in the direction defined by said selvage and a short dimension generally in the direction perpendicular to said selvage.
Claim 16
Dependent Claim
34 words
A blank deformable to constitute a seamless plastic mesh bag as recited in claim 14, including notches at selected locations in said mesh to reduce the cross section of the mesh at said locations.
Claim 17
Dependent Claim
32 words
A blank deformable to constitute a seamless plastic mesh bag as recited in claim 14, wherein the thickness of said selvage is greater than the thickness of the strands of said network.
Claim 18
Dependent Claim
60 words
A blank deformable to constitute a seamless plastic mesh bag as recited in claim 1, wherein said network comprises a matrix of mesh openings, each of said mesh openings having a long dimension generally in the direction defined by said selvage and a short dimension generally in the direction perpendicular to said selvage, including hinge means disposed in said selvage.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |