US5051297A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel film compositions
Assignee: Pliant LLC
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Filing: 1989-04-20
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Granted: 1991-09-24
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Expires: 2009-04-20
Abstract
Abstract Compositions useful in the manufacture of soft, heat sealable films and sheeting material of improved strength are prepared from blends of about 30 to about 80 wt. % of ethylene-methyl acrylate copolymer (EMA) and about 20 to about 70 wt. % of very low density polyethylene (VLDPE) having a density in the range between about 0.902 and about 0.910 gm/cc.
Inventors
- 👤 Gary J. Reich
- 👤 Richard L. Partlow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:32
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/08; C08L23/0807; C08L23/0815; C08L23/0846; C08L23/0869
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
78 words
A soft, pliable, heat-sealable film prepared from a resin composition consisting essentially of (A) from about 30 to about 80 wt. % of an ethylene - methyl acrylate copolymer (EMA), and (B) from about 20 to about 70 percent by weight of a very low density polyethylene (VLDPE) having a density between about 0.902 and about 0.910 gms/cc and being a non-elastomeric copolymer of ethylene and at least one comonomer selected from C 4 and C 10 alphaolefins.
Claim 2
Dependent Claim
78 words
A soft, pliable, heat-sealable film prepared from a resin composition consisting essentially of (A) from about 30 to about 80 wt. % of an ethylene - methyl acrylate copolymer (EMA), and (B) from about 20 to about 70 percent by weight of a very low density polyethylene (VLDPE) having a density between about 0.902 and about 0.910 gms/cc and being a non-elastomeric copolymer of ethylene and at least one comonomer selected from C 4 and C 10 alphaolefins.
Claim 3
Dependent Claim
23 words
The film of claim 1 wherein component (A) contains from about 17 to about 22 percent by weight of polymerized methyl acrylate groups.
Claim 4
Dependent Claim
34 words
The film of claim 1 wherein the concentration of component (A) ranges between about 50 and about 70 percent by weight and that of component (B) between about 30 and 50 percent by weight.
Claim 5
Dependent Claim
15 words
The film of claim 1 having a thickness between about 0.2 and about 10 mil.
Claim 6
Dependent Claim
15 words
The film of claim 1 having a thickness between about 0.3 and about 1.5 mil.
Claim 7
Dependent Claim
15 words
The film of claim 1 having a thickness between about 2 and about 10 mil.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-23 | 1995-03-25 | 1995-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-23 | 1999-03-25 | 1999-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-23 | 2003-03-25 | 2003-09-24 | $7700.00 | Window Closed / Lapsed |