US4834820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing tape for putting on disposable diaper
Assignee: Star Rubber Kogyo KK
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Filing: 1988-07-19
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Granted: 1989-05-30
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Expires: 2008-07-19
Abstract
Abstract A method for producing a tape for putting on a disposable diaper which comprises an elastic sheet (1) and a non-flexible bonded retaining sheet (2). The retaining sheet (2) is bonded at least in part to the elastic sheet (1) and provided with at least one cut-off groove (4).
Inventors
- 👤 Takahisa Kondo
- 👤 Masami Sekimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:36
CPC Classifications
B; B32; B32B; B32B25/00; B32B25/04; A; A61; A61F; A61F13/00; A61F13/15; A61F13/56; A61F13/58; B32B25/08; B32B25/10; B32B38/00; B32B38/0004; B32B2307/00; B32B2307/50; B32B2307/51; B32B2307/536; B32B2319/00; B32B2323/00; B32B2323/10; B32B2405/00; B32B2555/00; B32B2555/02; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1082; Y10T428/00; Y10T428/15
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
142 words
A method of producing a tape for putting on a disposable diaper, said tape having a rubber sheet and a non-flexible retaining sheet which is bonded, at least in part, to said rubber sheet and is provided with at least one cut-off groove, comprising the steps of: (a) superimposing the retaining sheet on a raw rubber sheet at a calendering stage in the rubber sheet manufacturing line, (b) curing the assembly in a curing oven, (c) cutting the sheet to a predetermined width and, at the same time, making at least one incision in said retaining sheet with a cutter or by high-frequency cutting to form the cut-off groove for each tape, (d) applying an adhesive agent to underside portions of the rubber sheet, and (e) applying a silicone dope as a releasing agent to the upper surface of the retaining sheet.
Claim 2
Independent Claim
142 words
A method of producing a tape for putting on a disposable diaper, said tape having a rubber sheet and a non-flexible retaining sheet which is bonded, at least in part, to said rubber sheet and is provided with at least one cut-off groove, comprising the steps of: (a) superimposing the retaining sheet on a raw rubber sheet at a calendering stage in the rubber sheet manufacturing line, (b) curing the assembly in a curing oven, (c) cutting the sheet to a predetermined width and, at the same time, making at least one incision in said retaining sheet with a cutter or by high-frequency cutting to form the cut-off groove for each tape, (d) applying an adhesive agent to underside portions of the rubber sheet, and (e) applying a silicone dope as a releasing agent to the upper surface of the retaining sheet.
Claim 3
Dependent Claim
19 words
A method according to claim 1, wherein two incisions are made to form two cut-off grooves in each tape.
Claim 4
Dependent Claim
20 words
A method according to claim 1, wherein only one incision is made to form one cut-off groove in each tape.
Claim 5
Dependent Claim
36 words
A method according to claim 1, wherein said non-flexible retaining sheet is made of any one of a group of materials comprising oriented polypropylene (OPP) film, other plastic film, nonwoven fabric material and woven textile material.
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) | 1992-05-29 | 1992-11-28 | 1993-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-29 | 1996-11-28 | 1997-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-29 | 2000-11-28 | 2001-05-30 | $7700.00 | Window Closed / Lapsed |