US4584234A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wrapping materials for photographic materials
Assignee: Fujifilm Holdings Corp
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Filing: 1984-07-16
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Granted: 1986-04-22
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Expires: 2004-07-16
Abstract
Abstract Wrapping materials for photographic materials comprising laminated layers of a paper support and at least one thermoplastic resin layer superposed on at least one surface of said paper support; said thermoplastic resin layer comprises a blended resin of (a) a high-density polyethylene having a density of 0.950 g/cm 3 or more and a melt index of 10-40 and (b) a low-density polyethylene having a density of 0.930 g/cm 3 or less and a melt index of 1-40, the weight ratio of (b)/(a) being 70/30-5/95, preferably 70/30-20/80, more preferably 60/40-40/60. At least one layer of said wrapping materials optionally comprises light-shielding substance in an amount of 1.0-30 g/m 2 .
Inventors
- 👤 Masuhiko Hirose
- 👤 Mutsuo Akao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:06
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/10; B32B15/00; B32B15/04; B32B15/08; B32B15/085; B32B27/32; G; G03; G03C; G03C3/00; G03C3/02; B32B2323/00; B32B2323/04; B32B2323/043; B32B2323/046; B32B2553/00; Y; Y10; Y10S; Y10S428/00; Y10S428/906; Y10T; Y10T428/00; Y10T428/25; Y10T428/27; Y10T428/30; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31899; Y10T428/31902; Y10T428/31909; Y10T428/31913
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
88 words
Wrapping materials for photographic materials, comprising laminated layers comprised of a paper support and at least one thermoplastic resin layer superposed on at least one surface of said paper support; wherein said thermoplastic resin layer comprises a blended resin of (a) a high density polyethylene having a density of 0.950 g/cm 3 or more and a melt index of 10-40, and (b) a low density polyethylene having a density of 0.930 g/cm 3 or less and a melt index of 1-40, the weight ratio of (b)/(a) being 70/30-5/95.
Claim 2
Dependent Claim
88 words
Wrapping materials for photographic materials, comprising laminated layers comprised of a paper support and at least one thermoplastic resin layer superposed on at least one surface of said paper support; wherein said thermoplastic resin layer comprises a blended resin of (a) a high density polyethylene having a density of 0.950 g/cm 3 or more and a melt index of 10-40, and (b) a low density polyethylene having a density of 0.930 g/cm 3 or less and a melt index of 1-40, the weight ratio of (b)/(a) being 70/30-5/95.
Claim 3
Dependent Claim
16 words
The wrapping materials as defined in claim 1, wherein the weight ratio of (b)/(a) is 70/30-20/80.
Claim 4
Dependent Claim
15 words
The wrapping materials as defined in claim 2, wherein said ratio of (b)/(a) is 60/40-40/60.
Claim 5
Dependent Claim
36 words
The wrapping materials as defined in claim 1, wherein light-shielding substance is incorporated in at least one layer of the wrapping materials in an amount of 1.0-30 g/m 2 per the total of the wrapping material.
Claim 6
Dependent Claim
16 words
The wrapping materials as defined in claim 4, wherein said light-shielding substance is in powder form.
Claim 7
Dependent Claim
18 words
The wrapping materials as defined in claim 4, wherein said light-shielding substance is in film or foil form.
Claim 8
Dependent Claim
16 words
A backing paper for photographic roll films including the wrapping materials as defined in claim 4.
Claim 9
Dependent Claim
19 words
The wrapping materials as defined in claim 4, wherein the light-shielding substance is incorporated in the thermoplastic resin layer.
Claim 10
Dependent Claim
18 words
The wrapping materials as defined in claim 4, wherein the light-shielding substance is incorporated in the paper support.
Claim 11
Dependent Claim
15 words
The wrapping materials as defined in claim 8, wherein the light-shielding substance is carbon black.
Claim 12
Dependent Claim
36 words
The wrapping materials as defined in claim 1, wherein the thermoplastic resin layer possesses superior cutting properties when compared to a resin layer composed of either the high density polyethylene or the low density polyethylene alone.
References Cited (Backward Citations)
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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) | 1989-04-21 | 1989-10-21 | 1990-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-21 | 1993-10-21 | 1994-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-21 | 1997-10-21 | 1998-04-22 | $7700.00 | Window Closed / Lapsed |