US4654240A
Expired / Lapsed
US
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Laminate film for flexible containers
Assignee: Zacros Corp
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Filing: 1984-09-28
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Granted: 1987-03-31
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Expires: 2004-09-28
Abstract
Abstract A laminate film for producing a flexible container comprising an outermost layer made of polyethylene terephthalate or biaxially oriented polypropylene, an intermediate layer made of a polyamide optionally layered with a highly transparent resin, and an innermost layer made of a transparent heat-sealable resin.
Inventors
- 👤 William D. Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:56
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/32; B32B27/34; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/31; B32B2307/40; B32B2307/412; B32B2307/70; B32B2307/724; B32B2307/7242; B32B2307/726; B32B2307/7265; B32B2323/00; B32B2323/04; B32B2439/00; B32B2439/80; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1334; Y10T428/1341; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975; Y10T428/31504; Y10T428/31725; Y10T428/31736; Y10T428/3175; Y10T428/31757; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192; Y10T428/31935
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
70 words
A flexible film laminate for a flexible medical product container to be sterilized at temperatures from approximately 110° C. to about 140° C. comprising: an outer layer selected from the group consisting of polyethylene terephthalate or polypropylene; a core layer constructed from a polyamide; and an inside layer selected from the group consisting of medium density polyethylene, linear medium density polyethylene, high density polyethylene, modified high density polyethylene with polyisobutylene.
Claim 2
Dependent Claim
70 words
A flexible film laminate for a flexible medical product container to be sterilized at temperatures from approximately 110° C. to about 140° C. comprising: an outer layer selected from the group consisting of polyethylene terephthalate or polypropylene; a core layer constructed from a polyamide; and an inside layer selected from the group consisting of medium density polyethylene, linear medium density polyethylene, high density polyethylene, modified high density polyethylene with polyisobutylene.
Claim 3
Dependent Claim
13 words
The film laminate of claim 1 wherein the inside layer comprises cast polypropylene.
Claim 4
Dependent Claim
20 words
The film laminate of claim 1 including a layer of polyvinylidene chloride located on a side of the core layer.
Claim 5
Dependent Claim
112 words
A film laminate for a flexible medical product container to be sterilized at temperatures from approximately 110° C. to about 140° C. comprising: an outer layer selected from the group consisting of polyethylene terephthalate or polypropylene; a core layer constructed from a polyamide; and an inside layer selected from the group consisting of medium density polyethylene, linear medium density polyethylene, high density polyethylene, modified high density polyethylene with polyisobutylene; the outer layer having a thickness of approximately 12 microns to about 30 microns; the core layer having a thickness of approximately 15 microns to about 50 microns; and the inner layer having a thickness of approximately 50 microns to about 120 microns.
Claim 6
Dependent Claim
112 words
A film laminate for a flexible medical product container to be sterilized at temperatures from approximately 110° C. to about 140° C. comprising: an outer layer selected from the group consisting of polyethylene terephthalate or polypropylene; a core layer constructed from a polyamide; and an inside layer selected from the group consisting of medium density polyethylene, linear medium density polyethylene, high density polyethylene, modified high density polyethylene with polyisobutylene; the outer layer having a thickness of approximately 12 microns to about 30 microns; the core layer having a thickness of approximately 15 microns to about 50 microns; and the inner layer having a thickness of approximately 50 microns to about 120 microns.
Claim 7
Dependent Claim
21 words
The film laminate of claim 4 wherein the film has a total thickness of approximately 77 microns to about 200 microns.
Claim 8
Dependent Claim
46 words
The film laminate of claim 5 wherein: the outer layer has a thickness of approximately 12 to about 25 microns; the core layer has a thickness of approximately 15 to 30 microns; and the inner layer has a thickness of approximately 60 to about 120 microns.
Claim 9
Dependent Claim
20 words
The film laminate of claim 6 wherein the total thickness of the film laminate is approximately 110 to 175 microns.
Claim 10
Dependent Claim
78 words
A flexible container for containing a product to be maintained and extracted under sterile conditions, the container capable of being steam sterilized at temperatures from approximately 110° to about 140° C. comprising: an outer layer selected from the group consisting of polyethylene terephthalate or polypropylene; a core layer constructed from a polyamide; and an inside layer selected from the group consisting of medium density polyethylene, linear medium density polyethylene, high density polyethylene, ethylene vinyl acetate copolymer and polypropylene.
Claim 11
Dependent Claim
78 words
A flexible container for containing a product to be maintained and extracted under sterile conditions, the container capable of being steam sterilized at temperatures from approximately 110° to about 140° C. comprising: an outer layer selected from the group consisting of polyethylene terephthalate or polypropylene; a core layer constructed from a polyamide; and an inside layer selected from the group consisting of medium density polyethylene, linear medium density polyethylene, high density polyethylene, ethylene vinyl acetate copolymer and polypropylene.
Claim 12
Dependent Claim
13 words
The flexible container of claim 8 wherein the inside layer comprises cast polypropylene.
Claim 13
Dependent Claim
20 words
The flexible container of claim 8 including a layer of polyvinylidene chloride located on a side of the core layer.
Claim 14
Dependent Claim
50 words
The film laminate of claim 8 wherein: the outer layer has a thickness of approximately 12 microns to about 30 microns; the core layer has a thickness of approximately 15 microns to about 50 microns; and the inner layer has a thickness of approximately 50 microns to about 120 microns.
Claim 15
Dependent Claim
21 words
The flexible container of claim 11 wherein the container has a total thickness of approximately 77 microns to about 200 microns.
Claim 16
Dependent Claim
46 words
The flexible container of claim 12 wherein: the outer layer has a thickness of approximately 12 to about 25 microns; the core layer has a thickness of approximately 15 to 30 microns; and the inner layer has a thickness of approximately 60 to about 120 microns.
Claim 17
Dependent Claim
20 words
The flexible container of claim 13 wherein the total thickness of the flexible container is approximately 110 to 175 microns.
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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) | 1990-03-30 | 1990-09-29 | 1991-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-30 | 1994-09-29 | 1995-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-30 | 1998-09-29 | 1999-03-31 | $7700.00 | Window Closed / Lapsed |