US4564407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacturing method and manufacturing equipment for plastic air cell cushioning material
Assignee: Orihiro Co Ltd
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Filing: 1984-04-16
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Granted: 1986-01-14
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Expires: 2004-04-16
Abstract
Abstract A manufacturing method for a cushioning material of air-filled film, wherein a plastic film sheet formed into a cylindrical shape is transversely fusion-bonded so that small air-filled cells are fabricated continuously. Manufacturing equipment is provided with a means for forming a plastic film into a cylindrical shape, a longitudinal sealing means, a roller means, and a transverse sealing means.
Inventors
- 👤 Orihiro Tsuruta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:39
CPC Classifications
B; B31; B31D; B31D5/00; B31D5/0039; B31D5/0073; B29; B29C; B29C49/00; B29C49/02; B29C49/06905; B29C49/0691; B29L; B29L2023/00; B29L2023/001; B29L2031/00; B29L2031/712; B29L2031/7138; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1005; Y10T156/1007; Y10T156/1008; Y10T156/1013; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24661
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
134 words
A method for manufacturing cushioning material consisting of air-filled plastic cells, which comprises the following sequential steps: (a) forming a single sheet of plastic film into a cylindrical shape; (b) fusion bonding said cylindrical shape along the entire longitudinal edges thereof to form a cylindrical body; (c) advancing downwardly said cylindrical body while concurrently fusion bonding the leading end of said body transversely to the downward direction of movement of said body; (d) introducing air into the open end of said cylindrical body; (e) intermittently restricting the expansion of said cylindrical body with at least one pair of forming plates transversely to the direction of movement of the body; (f) fusion bonding said cylindrical body at predetermined distances from said fusion bonded lead end to form individual, air filed cells in a sequential manner.
Claim 2
Independent Claim
134 words
A method for manufacturing cushioning material consisting of air-filled plastic cells, which comprises the following sequential steps: (a) forming a single sheet of plastic film into a cylindrical shape; (b) fusion bonding said cylindrical shape along the entire longitudinal edges thereof to form a cylindrical body; (c) advancing downwardly said cylindrical body while concurrently fusion bonding the leading end of said body transversely to the downward direction of movement of said body; (d) introducing air into the open end of said cylindrical body; (e) intermittently restricting the expansion of said cylindrical body with at least one pair of forming plates transversely to the direction of movement of the body; (f) fusion bonding said cylindrical body at predetermined distances from said fusion bonded lead end to form individual, air filed cells in a sequential manner.
Claim 3
Dependent Claim
135 words
Apparatus for carrying out the method of claim 1, comprising: (a) a cylindrical member for shaping a sheet of plastic film into a cylindrical shape; (b) a longitudinal sealer arranged beneath said cylindrical member, for fusion bonding said sheet into a cylindrical body; (c) a first pair of rollers positioned beneath said longitudinal sealer, for guiding said cylindrically shaped sheet in a downward direction; (d) a second pair of rollers positioned spacedly beneath said first pair of rollers, for restricting the inflation of said cylindrical body; (e) a transverse sealer positioned beneath said second pair of rollers, for fusion bonding said body transversely to the downward direction; and (f) at least one pair of forming plates positioned above and/or beneath said transverse sealer for forming the size of the individual cells in said cylindrical body.
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) | 1989-01-13 | 1989-07-15 | 1990-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-13 | 1993-07-15 | 1994-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-13 | 1997-07-15 | 1998-01-14 | $7700.00 | Window Closed / Lapsed |