Patent US4170674A successfully refreshed from Google Patents.
US4170674A
Expired / Lapsed
US
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Composite board structure using a corrugated fiberboard and a method of and an apparatus for producing the composite board structure
Assignee: Nissan Motor Co Ltd
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Filing: 1977-07-20
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Granted: 1979-10-09
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Expires: 1997-07-20
Abstract
Abstract A composite board structure comprising a corrugated fiberboard consisting of at least one liner and at least one corrugated paper medium bonded to the liner by means of a layer of a hot melt adhesive material, the liner being covered with a facing web of a woven or unwoven fabric which has its fibers scatteringly filling in perforations formed in the liner and sticking to the layer of the hot melt adhesive material so as to be securely fastened to the liner without use of any adhesive material between the liner and the facing web.
Inventors
- 👤 Masamitsu Matsuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:29
CPC Classifications
B; B32; B32B; B32B29/00; B32B29/08; B31; B31F; B31F1/00; B31F1/20; B31F1/24; B31F1/26; B31F1/28; B31F1/2822; B32B29/002; B32B29/02; B32B3/00; B32B3/26; B32B3/266; B32B3/28; B32B38/00; B32B38/04; B32B5/00; B32B5/02; B32B5/022; B32B5/024; B32B7/00; B32B7/04; B32B7/12; B65; B65D; B65D65/00; B65D65/38; B65D65/40; B65D65/403; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23943; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24339; Y10T428/24628; Y10T428/24669; Y10T428/24694; Y10T428/24711; Y10T428/24727
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
148 words
A composite board structure comprising a corrugated fiberboard having at least one liner and at least one corrugated paper medium which is bonded at the tops of its ridges to one face of the liner by means of a layer of a thermoplastic adhesive material, and a facing web of a fibrous fabric securely attached to the other face of said liner without an intervening adhesive layer, wherein the liner is formed with a plurality of perforations and the fibers of the fibrous fabric forming said facing web are partially stuffed into said perforations, the fibers in each of the perforations partially sticking to the layer of the thermoplastic adhesive material on said one face of the liner so that the facing web is securely fastened to said other face of the liner partially by the fibers retained in the individual perforations and partially by said adhesive material.
Claim 2
Dependent Claim
148 words
A composite board structure comprising a corrugated fiberboard having at least one liner and at least one corrugated paper medium which is bonded at the tops of its ridges to one face of the liner by means of a layer of a thermoplastic adhesive material, and a facing web of a fibrous fabric securely attached to the other face of said liner without an intervening adhesive layer, wherein the liner is formed with a plurality of perforations and the fibers of the fibrous fabric forming said facing web are partially stuffed into said perforations, the fibers in each of the perforations partially sticking to the layer of the thermoplastic adhesive material on said one face of the liner so that the facing web is securely fastened to said other face of the liner partially by the fibers retained in the individual perforations and partially by said adhesive material.
Claim 3
Dependent Claim
21 words
A composite board structure as set forth in claim 1, in which said facing web is formed of a woven fabric.
Claim 4
Dependent Claim
20 words
A composite board structure as set forth in claim 2, in which said woven fabric is formed of natural fibers.
Claim 5
Dependent Claim
22 words
A composite board structure as set forth in claim 1, in which said facing web is formed of a synthetic resin polymer.
Claim 6
Dependent Claim
26 words
A composite board structure as set forth in claim 1, in which said facing web is flocked with short fibers over said perforations in said liner.
Claim 7
Dependent Claim
17 words
A composite board structure as set forth in claim 1, having at least one portion three-dimensionally curved.
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) | 1982-10-08 | 1983-04-09 | 1983-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-08 | 1987-04-09 | 1987-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-08 | 1991-04-09 | 1991-10-09 | $7700.00 | Window Closed / Lapsed |