US3900356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making a cellular cushioning structure
Assignee: FMC Corp
•
Filing: 1973-03-28
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Granted: 1975-08-19
•
Expires: 1993-03-28
Abstract
Abstract A method for making a three-ply, cellular cushioning structure within which is contained a fluid under pressure, with the intermediate ply being of corrugated configuration and sealed to the respective outer plies at its crests and valleys.
Inventors
- 👤 Walter T Koch
- 👤 Eugene G Horsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:00
CPC Classifications
B; B32; B32B; B32B37/00; B32B37/14; B32B37/146; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/40; B29C66/41; B29C66/43; B29C66/438; B29C66/439; B29C66/70; B29C66/73; B29C66/737; B29C66/7371; B29C66/73711; B29C66/73712; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/814; B29C66/8145; B29C66/81463; B29C66/83; B29C66/834; B29C66/8341; B29C66/83411; B29C66/83413; B31; B31D; B31D5/00; B31D5/0039; B31D5/0069; B32B3/00; B32B3/10; B32B3/12; B65; B65D; B65D65/00; B65D65/38; B65D65/44; B29C65/08; B29C65/48; B29C65/4895; B29C66/71; B29C66/72; B29C66/723; B29C66/7234; B29C66/72343; B29C66/8351; B29C66/83511; B29C66/83513; B29L; B29L2031/00; B29L2031/712; B29L2031/7138; B32B2305/00; B32B2305/02; B32B2305/024; Y; Y10; Y10T; Y10T428/00; Y10T428/23; Y10T428/239; Y10T428/24; Y10T428/24628; Y10T428/24661
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
96 words
A METHOD OF MAKING A CELLULAR STRUCTURE INCLUDING THE STEPS OF SEALING LIKE PLIES OF UNIAXIALLY ORIENTED THERMOPLASTIC POLYMERIC FILM IN PLANAR RELATIONSHIP TO THE OPPOSITE SIDE OF AN INTERMEDIATE FLEXIBLE PLY ALONG CONTINUOUS AREAS WHICH ARE SPACED FROM EACH OTHER AND EXTEND AT SUBSTANTIALLY RIGHT ANGLES TO THE DIRECTION OF FILM ORIENTED WITH THE AREAS AT WHICH THE RESPECTIVE FILM PLIES ARE SEALED TO THE INTERMEDIATE PLY BEING IN ALTERNAING RELATIONSHIP WITH EACH OTHER, HEATING THE OVERLAPPING PLIES TO AT LEAST PARTIALLY RELAX THE ORIENTATION IN THE FILMS, AND DELIVERING AND CONTAINING BETWEEN THE INTERME-
Claim 2
Independent Claim
96 words
A METHOD OF MAKING A CELLULAR STRUCTURE INCLUDING THE STEPS OF SEALING LIKE PLIES OF UNIAXIALLY ORIENTED THERMOPLASTIC POLYMERIC FILM IN PLANAR RELATIONSHIP TO THE OPPOSITE SIDE OF AN INTERMEDIATE FLEXIBLE PLY ALONG CONTINUOUS AREAS WHICH ARE SPACED FROM EACH OTHER AND EXTEND AT SUBSTANTIALLY RIGHT ANGLES TO THE DIRECTION OF FILM ORIENTED WITH THE AREAS AT WHICH THE RESPECTIVE FILM PLIES ARE SEALED TO THE INTERMEDIATE PLY BEING IN ALTERNAING RELATIONSHIP WITH EACH OTHER, HEATING THE OVERLAPPING PLIES TO AT LEAST PARTIALLY RELAX THE ORIENTATION IN THE FILMS, AND DELIVERING AND CONTAINING BETWEEN THE INTERME-
Claim 3
Dependent Claim
43 words
A method as defined in claim 1 further including the step of bonding the film plies to the intermediate ply together along continuous areas which are spaced from each other and extend at substantially right angles to the corrugations in the intermediate ply.
Claim 4
Dependent Claim
13 words
A method as defined in claim 2 wherein said fluid is a gas.
Claim 5
Dependent Claim
47 words
A method as defined in claim 1 wherein the film plies are only partially relaxed during the heating thereof, and further including the step of heating the overlapping plies after the fluid under pressure is delivered and contained therebetween to further relax the orientation in the films.
Claim 6
Dependent Claim
41 words
A method as defined in claim 3 wherein the film plies are only partially relaxed during the heating thereof, and further including the step of heating the overlapping plies After bonding the same to further relax the orientation in the films.
Claim 7
Dependent Claim
17 words
A method as defined in claim 3 wherein the intermediate ply is a fluid-impermeable thermoplastic polymeric film.
Claim 8
Dependent Claim
16 words
A method as defined in claim 3 wherein the intermediate ply is a fluid permeable web.
Claim 9
Dependent Claim
76 words
A method as defined in claim 6 wherein the intermediate film is molecularly oriented at least along one axial direction and is capable of retaining such orientation when heated to the temperature at which the orientation in the outermost film plies is relaxed, and further including the step of heating the overlapping plies after the fluid under pressure is delivered and contained therebetween to effect at least partial relaxation of the orientation in the intermediate film.
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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) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |