Patent US3346438A successfully refreshed from Google Patents.
US3346438A
Expired / Lapsed
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Method and apparatus for making cushioning and insulating material
Assignee: Sealed Air Corp
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Filing: 1963-09-10
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Granted: 1967-10-10
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Expires: 1983-09-10
Abstract
No abstract record available.
Inventors
- 👤 Marc A Chavannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:17
CPC Classifications
B; B31; B31F; B31F1/00; B31F1/07; B29; B29C; B29C43/00; B29C43/22; B29C43/30; B29C43/305; B29C51/00; B29C51/18; B29C51/20; B29C51/22; B29C51/225; B29C69/00; B29C69/02; B29C69/025; B29D; B29D24/00; B31D; B31D5/00; B31D5/0039; B31D5/0069; B32; B32B; B32B27/00; B65; B65D; B65D81/00; B65D81/02; B65D81/03; E; E04; E04C; E04C2/00; E04C2/30; E04C2/32; E04C2/326; G; G01; G01R; G01R15/00; G01R15/12; B29C35/00; B29C35/02; B29C35/08; B29K; B29K2101/00; B29K2101/12; B29L; B29L2009/00; B29L2031/00; B29L2031/722; B31F2201/00; B31F2201/07; B31F2201/0707; B31F2201/0715; B31F2201/0723; B31F2201/0733; B31F2201/0738; B31F2201/0754; B31F2201/0756; B31F2201/0758; B31F2201/0761; F; F16; F16F; F16F2226/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1025; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24661
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
THE METHOD OF FABRICATING CUSHIONING MATERIAL COMPRISING THE STEPS OF HEATING A FIRST PLASTIC FILM, MOLDING SAID HEATED FILM TO PROVIDE A PLURALITY OF CLOSELY SPACED EMBOSSMENTS, HEATING A SECOND PLASTIC FILM TO A FUSING TEMPERATURE AND FEEDING IT INTO OVERLYING RELATIONSHIP WITH THE UNEMBOSSED PORTIONS OF SAID FIRST FILM TO FUSE SAID FILMS THROUGHOUT THE UNEMBOSSED PORTIONS OF SAID FIRST FILM AND FORM A UNITARY STRUCTURE HAVING A PLURALITY OF CLOSELY SPACED, HERMETICALLY SEALED AIR POCKETS, HEATING AT LEAST THE EMBOSSED SURFACE OF SAID STRUCTURE TO THE MELTING POINT OF SAID PLASTIC FILMS, COMPRESSING SAID HEATED STRUCTURE TO FUSE SIDE WALLS OF ADJOINING EMBOSSMENTS ONE TO THE OTHERS, AND COOLING THE RESULTANT CUSHIONING MATERIAL.
Claim 2
Independent Claim
115 words
THE METHOD OF FABRICATING CUSHIONING MATERIAL COMPRISING THE STEPS OF HEATING A FIRST PLASTIC FILM, MOLDING SAID HEATED FILM TO PROVIDE A PLURALITY OF CLOSELY SPACED EMBOSSMENTS, HEATING A SECOND PLASTIC FILM TO A FUSING TEMPERATURE AND FEEDING IT INTO OVERLYING RELATIONSHIP WITH THE UNEMBOSSED PORTIONS OF SAID FIRST FILM TO FUSE SAID FILMS THROUGHOUT THE UNEMBOSSED PORTIONS OF SAID FIRST FILM AND FORM A UNITARY STRUCTURE HAVING A PLURALITY OF CLOSELY SPACED, HERMETICALLY SEALED AIR POCKETS, HEATING AT LEAST THE EMBOSSED SURFACE OF SAID STRUCTURE TO THE MELTING POINT OF SAID PLASTIC FILMS, COMPRESSING SAID HEATED STRUCTURE TO FUSE SIDE WALLS OF ADJOINING EMBOSSMENTS ONE TO THE OTHERS, AND COOLING THE RESULTANT CUSHIONING MATERIAL.
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) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |