Patent US4029264A successfully refreshed from Google Patents.
US4029264A
Expired / Lapsed
US
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Cling film roll having a nodulose leading edge portion and the method and apparatus for producing it
Assignee: Union Carbide Corp
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Filing: 1976-05-03
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Granted: 1977-06-14
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Expires: 1996-05-03
Abstract
Abstract A method and apparatus for producing a novel cling film roll having a nodulose leading edge portion composed of a plurality of surface disturbances consisting of small stretched area projections obtained by compressing the film between a nodulose surface, such as sandpaper or emery cloth, and a yieldable support surface.
Inventors
- 👤 Ronald Griffith Reese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:14
CPC Classifications
B; B65; B65H; B65H75/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
70 words
In a roll of consumer type plastic wrapping cling film having a relatively high tendency to cling to itself, the improvement comprising the leading edge portion of the film having a plurality of surface disturbances consisting of small stretched areas projecting from the surface of the film thus forming a substantially nodulose leading edge portion which is readily identifiable and adapted for easy grasping to initiate start of the roll.
Claim 2
Dependent Claim
70 words
In a roll of consumer type plastic wrapping cling film having a relatively high tendency to cling to itself, the improvement comprising the leading edge portion of the film having a plurality of surface disturbances consisting of small stretched areas projecting from the surface of the film thus forming a substantially nodulose leading edge portion which is readily identifiable and adapted for easy grasping to initiate start of the roll.
Claim 3
Dependent Claim
30 words
The roll of cling film of claim 1 wherein the width of the nodulose leading edge portion is between about 0.5 inches (1.27 cm) and about 3 inches (7.62 cm).
Claim 4
Dependent Claim
38 words
The roll of cling film of claim 1 wherein the surface disturbances forming the substantially nodulose leading edge project above the surface of the film by between about 0.005 inch (0.127 mm) and about 0.08 inch (2.03 mm).
Claim 5
Dependent Claim
48 words
The roll of cling film of claim 1 wherein each disturbance projecting form the leading edge portion has a projected area on a plane parallel to the surface of the film of between about 19.6 square mils (0.012 square cm) and about 0.005 square inch (3.23 square cm).
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) | 1980-06-13 | 1980-12-13 | 1981-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-13 | 1984-12-13 | 1985-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-13 | 1988-12-13 | 1989-06-14 | $7700.00 | Window Closed / Lapsed |