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US4337285A
Expired / Lapsed
US
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Wrapping material for light-sensitive materials
Assignee: Fujifilm Holdings Corp
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Filing: 1980-08-25
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Granted: 1982-06-29
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Expires: 2000-08-25
Abstract
Abstract A wrapping material for light-sensitive materials comprising at least two monoaxially drawn films composed of high density polyethylene having a density of at least 0.94 g/cm 3 , which are bonded with an adhesive layer containing an aluminium paste or an aluminium powder so that drawing axes of the films cross each other at an angle of from 45° to 90°.
Inventors
- 👤 Mutsuo Akao
- 👤 Kenzo Kashiwagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:49
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/32; B32B15/00; B32B15/04; B32B15/08; B32B27/06; B32B27/08; B32B7/00; B32B7/04; B32B7/12; B65; B65D; B65D65/00; B65D65/02; B65D65/16; G; G03; G03C; G03C3/00; B32B2264/00; B32B2264/10; B32B2264/105; B32B2307/00; B32B2307/50; B32B2307/514; B32B2307/516; B32B2323/00; B32B2323/04; B32B2323/046; B32B2439/00; B32B2439/40; B32B2439/46; B32B2553/00; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1334; Y10T428/1338; Y10T428/24; Y10T428/24802; Y10T428/24843; Y10T428/24851; Y10T428/24893; Y10T428/24901; Y10T428/24909; Y10T428/26; Y10T428/263; Y10T428/269; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/2848; Y10T428/2852; Y10T428/2857; Y10T428/31504; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
83 words
A wrapping material for light-sensitive materials comprising at least two monoaxially drawn films composed of high density polyethylene having a density of at least 0.94 g/cm 3 , which are bonded with an adhesive layer containing an aluminum paste or an aluminum powder wherein aluminum is present in an amount of from 0.3 to 12 wt% based on the total weight of the adhesive layer so that drawing axes of the films cross each other at an angle of from 45° to 90°.
Claim 2
Dependent Claim
83 words
A wrapping material for light-sensitive materials comprising at least two monoaxially drawn films composed of high density polyethylene having a density of at least 0.94 g/cm 3 , which are bonded with an adhesive layer containing an aluminum paste or an aluminum powder wherein aluminum is present in an amount of from 0.3 to 12 wt% based on the total weight of the adhesive layer so that drawing axes of the films cross each other at an angle of from 45° to 90°.
Claim 3
Dependent Claim
33 words
A wrapping material for light-sensitive materials as in claim 1, wherein the aluminium is present in an amount of from 1.5 to 7 wt%, based on the total weight of the adhesive layer.
Claim 4
Dependent Claim
35 words
A wrapping material for light-sensitive materials as in claim 1, or 2, wherein the two monoaxially drawn films are composed of high density polyethylene having a density of from 0.94 to 0.97 g/cm 3 .
Claim 5
Dependent Claim
28 words
A wrapping material for light-sensitive materials as in claim 1, or 2, wherein the monoaxially drawn films are drawn to from 2 to 6 times their initial length.
Claim 6
Dependent Claim
28 words
A wrapping material for light-sensitive materials as in claim 1, or 2, wherein the monoaxially drawn films are drawn to from 2.2 to 4.2 times their initial length.
Claim 7
Dependent Claim
39 words
A wrapping material for light-sensitive materials as in claim 1, or 2, wherein the adhesive layer additionally contains a light-shielding agent selected from the group consisting of coloring pigments, coloring dyes, TiO 2 , CaCO 3 , and clay.
Claim 8
Dependent Claim
14 words
A packaging bag prepared from a wrapping material as in claim 1, or 2.
Claim 9
Dependent Claim
34 words
A wrapping material for light-sensitive materials as in claim 1, or 2, wherein the average diameter of the aluminium particles of the aluminium paste or the aluminium powder is from about 1 to 350μ.
Claim 10
Dependent Claim
33 words
A wrapping material for light-sensitive materials as in claim 1, or 2, wherein the average diameter of the aluminium particles of the aluminium paste or the aluminium powder is from 3 to 100μ.
Claim 11
Dependent Claim
25 words
A wrapping material for light-sensitive materials as in claim 1, or 2, wherein the adhesive layer has a thickness of from about 5 to 60μ.
Claim 12
Dependent Claim
33 words
A wrapping material for light-sensitive materials as in claim 10, wherein the two monoaxially drawn films are composed of high density polyethylene having a density of from 0.94 to 0.97 g/cm 3 .
Claim 13
Dependent Claim
26 words
A wrapping material for light-sensitive materials as in claim 10, wherein the monoaxially drawn films are drawn to from 2 to 6 times their initial length.
Claim 14
Dependent Claim
26 words
A wrapping material for light-sensitive materials as in claim 10, wherein the monoaxially drawn films are drawn to from 2.2 to 4.2 times their initial length.
Claim 15
Dependent Claim
24 words
A wrapping material for light-sensitive materials as in claim 1, or 2, wherein the adhesive layer has a thickness of from 7 to 20μ.
Claim 16
Dependent Claim
33 words
A wrapping material for light-sensitive materials as in claim 14, wherein the two monoaxially drawn films are composed of high density polyethylene having a density of from 0.94 to 0.97 g/cm 3 .
Claim 17
Dependent Claim
26 words
A wrapping material for light-sensitive materials as in claim 14, wherein the monoaxially drawn films are drawn to from 2 to 6 times their initial length.
Claim 18
Dependent Claim
26 words
A wrapping material for light-sensitive materials as in claim 14, wherein the monoaxially drawn films are drawn to from 2.2 to 4.2 times their initial length.
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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) | 1985-06-28 | 1985-12-28 | 1986-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-28 | 1989-12-28 | 1990-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-28 | 1993-12-28 | 1994-06-29 | $7700.00 | Window Closed / Lapsed |