Patent US3887418A successfully refreshed from Google Patents.
US3887418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Honeycomb product and process for manufacture
Assignee: Individual
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Filing: 1973-05-14
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Granted: 1975-06-03
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Expires: 1993-05-14
Abstract
Abstract A process for the continuous production of low density honeycomb cores for use in lightweight sandwich panels and laminates. Thin webs of structural web material, for example, aluminum foil or kraft paper are first corrugated forming crest and trough areas, followed by the application of adhesive coatings, for example, to the outer surface of the crests and the outer surface of the troughs of layers of the corrugated webs. The layers are then stacked one upon another so as to alternate an adhesive coated corrugated web with an uncoated corrugated web. Heat and/or pressure is then applied to the stack to effect bonding of the stacked material. Expansion of the stack, as by pulling the outer webs of the bonded stack, produces a low density honeycomb core. If desired, prior to expansion, the compressed bonded stack of corrugated webs can be machined precisely into complicated shapes and still maintain the desired shape after expansion in the planes parallel to the layers.
Inventors
- 👤 Peter J Jurisich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:38
CPC Classifications
B; B31; B31D; B31D3/00; B31D3/02; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1003; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24165; Y10T428/24628; Y10T428/24669; Y10T428/24694; Y10T428/24711
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
115 words
A PROCESS FOR THE MANUFACTURE OF HONEYCOMB COMPRISING: CORRUGATING A WEB MATERIAL TO FORM ALTERNATING CREST AND TROUGH AREAS, APPLYING ADHESIVE COATINGS TO THE CORRUGATED WEBS AND FORMING A STACK OF SAID ADHESIVE COATED WEBS SO THAT SAID CREST AND TROUGH AREAS ARE IN SUBSTANTIAL NESTING ALIGNMENT, APPLYING SAID ADHESIVE COATINGS ONLY TO THE EXTREME OUTER SURFACES OF THE CRESTS AND TO THE EXTREME OUTER SURFACE OF THE TROUGHS OF ALTERNATE LAYERS OF THE CORRUGATED WEB MATERIALS, SAID STACK BEING FORMED BY ALTERMATING LAYERS OF ADHESIVE COATED AND UNCOATED CORRUGATED WEBS, ALLOWING THE ADHESIVE COATINGS TO CURE AND BOND THE STACKED WEBS TOGETHER, AND, EXPANDING SAID BONDED WEBS TO FORM AN OPEN CELLED HONEYCOMB STRUCTURE.
Claim 2
Dependent Claim
115 words
A PROCESS FOR THE MANUFACTURE OF HONEYCOMB COMPRISING: CORRUGATING A WEB MATERIAL TO FORM ALTERNATING CREST AND TROUGH AREAS, APPLYING ADHESIVE COATINGS TO THE CORRUGATED WEBS AND FORMING A STACK OF SAID ADHESIVE COATED WEBS SO THAT SAID CREST AND TROUGH AREAS ARE IN SUBSTANTIAL NESTING ALIGNMENT, APPLYING SAID ADHESIVE COATINGS ONLY TO THE EXTREME OUTER SURFACES OF THE CRESTS AND TO THE EXTREME OUTER SURFACE OF THE TROUGHS OF ALTERNATE LAYERS OF THE CORRUGATED WEB MATERIALS, SAID STACK BEING FORMED BY ALTERMATING LAYERS OF ADHESIVE COATED AND UNCOATED CORRUGATED WEBS, ALLOWING THE ADHESIVE COATINGS TO CURE AND BOND THE STACKED WEBS TOGETHER, AND, EXPANDING SAID BONDED WEBS TO FORM AN OPEN CELLED HONEYCOMB STRUCTURE.
Claim 3
Dependent Claim
115 words
A process for the manufacture of honeycomb comprising: corrugating a web material to form alternating crest and trough areas; applying adhesive coatings to the corrugated webs and forming a stack of said adhesive coated webs so that said crest and trough areas are in substantial nesting alignment; applying said adhesive coatings only to the extreme outer surfaces of the crests and to the extreme outer surface of the troughs of alternate layers of the corrugated web materials; said stack being formed by alternating layers of adhesive coated and uncoated corrugated webs; allowing the adhesive coatings to cure and bond the stacked webs together; and, expanding said bonded webs to form an open celled honeycomb structure.
Claim 4
Dependent Claim
115 words
A process for the manufacture of honeycomb comprising: corrugating a web material to form alternating crest and trough areas; applying adhesive coatings to the corrugated webs and forming a stack of said adhesive coated webs so that said crest and trough areas are in substantial nesting alignment; applying said adhesive coatings only to the extreme outer surfaces of the crests and to the extreme outer surface of the troughs of alternate layers of the corrugated web materials; said stack being formed by alternating layers of adhesive coated and uncoated corrugated webs; allowing the adhesive coatings to cure and bond the stacked webs together; and, expanding said bonded webs to form an open celled honeycomb structure.
Claim 5
Dependent Claim
24 words
A process as claimed in claim 1 wherein: heat and pressure are applied to the stacked webs while allowing the adhesive coatings to cure.
Claim 6
Dependent Claim
52 words
A process as claimed in claim 2 wherein: said adhesive coatings are heat curable and wherein heat and pressure are applied to the stacked layers of web to cure the adhesive coatings; and, wherein said expansion of said bonded stack is effected by providing a pulling force to the outermost web layers.
Claim 7
Dependent Claim
41 words
A process as claimed in claim 3 wherein: saiD expansion is achieved by first compressing the bonded stacked webs against gripping belts followed by applying a pulling pressure on said bonded stacked webs by means of another pair of gripping belts.
Claim 8
Dependent Claim
85 words
A process as claimed in claim 1 wherein: alternate substantially equal length portions of a continuous length of corrugated web are adhesive coated on the extreme outer surface of the crest areas and the extreme outer surface of the trough areas; and, wherein said stack is formed by continously laying down said corrugated web by alternating an adhesive coated portion of web with an uncoated portion of web; and, further applying heat and pressure to the stacked webs while allowing the adhesive coating to cure.
Claim 9
Dependent Claim
12 words
A process as claimed in claim 4 wherein: said process is continuous.
Claim 10
Dependent Claim
117 words
A PROCESS FOR THE MANUFACTURE OF HONEYCOMB COMPRISING CORRUGATING A WEB MATERIAL TO FORM ALTERNATING CREST AND TROUGH AREAS, APPLYING ADHESIVE COATINGS TO THE CORRUGATED WEBS AND FORMING A STACK OF SAID ADHESIVE COATED WEBS SO THAT SAID CREST AND TROUGH AREAS ARE IN SUBSTANTIAL NESTING ALIGNMENT, SAID ADHESIVE COATINGS ARE APPLIED ONLY TO THE EXTEME INNER SURFACE OF THE CRESTS AND TO THE EXTREME INNER SURFACE OF THE TROUGHS OF ALTERNATE LAYERS OF CORRUGATED WEB MATERIAL, SAID STACK IS FORMED BY ALTERNATING LAYER OF ADHESIVE COATED AND UNCOATED WEBS, AND, FURTHER COMPRISING APPLYING PRESSURE TO THE STACKED WEBS WHILE ALLOWING THE ADHESIVE COATING TO CURE, EXPANDING SAID BONDED WENS TO FORM AN OPEN CELLED HONEYCOMB STRUCTURE.
Claim 11
Dependent Claim
117 words
A PROCESS FOR THE MANUFACTURE OF HONEYCOMB COMPRISING CORRUGATING A WEB MATERIAL TO FORM ALTERNATING CREST AND TROUGH AREAS, APPLYING ADHESIVE COATINGS TO THE CORRUGATED WEBS AND FORMING A STACK OF SAID ADHESIVE COATED WEBS SO THAT SAID CREST AND TROUGH AREAS ARE IN SUBSTANTIAL NESTING ALIGNMENT, SAID ADHESIVE COATINGS ARE APPLIED ONLY TO THE EXTEME INNER SURFACE OF THE CRESTS AND TO THE EXTREME INNER SURFACE OF THE TROUGHS OF ALTERNATE LAYERS OF CORRUGATED WEB MATERIAL, SAID STACK IS FORMED BY ALTERNATING LAYER OF ADHESIVE COATED AND UNCOATED WEBS, AND, FURTHER COMPRISING APPLYING PRESSURE TO THE STACKED WEBS WHILE ALLOWING THE ADHESIVE COATING TO CURE, EXPANDING SAID BONDED WENS TO FORM AN OPEN CELLED HONEYCOMB STRUCTURE.
Claim 12
Dependent Claim
117 words
A process for the manufacture of honeycomb comprising: corrugating a web material to form alternating crest and trough areas; applying adhesive coatings to the corrugated webs and forming a stack of said adhesive coated webs so that said crest and trough areas are in substantial nesting alignment; said adhesive coatings are applied only to the extreme inner surface of the crests and to the extreme inner surface of the troughs of alternate layers of corrugated web material; said stack is formed by alternating layers of adhesive coated and uncoated webs; and, further comprising applying pressure to the stacked webs while allowing the adhesive coating to cure, expanding said bonded webs to form an open celled honeycomb structure.
Claim 13
Dependent Claim
117 words
A process for the manufacture of honeycomb comprising: corrugating a web material to form alternating crest and trough areas; applying adhesive coatings to the corrugated webs and forming a stack of said adhesive coated webs so that said crest and trough areas are in substantial nesting alignment; said adhesive coatings are applied only to the extreme inner surface of the crests and to the extreme inner surface of the troughs of alternate layers of corrugated web material; said stack is formed by alternating layers of adhesive coated and uncoated webs; and, further comprising applying pressure to the stacked webs while allowing the adhesive coating to cure, expanding said bonded webs to form an open celled honeycomb structure.
Claim 14
Dependent Claim
144 words
A PROCESS FOR THE MANUFACTURE OF HONEYCOMB COMPRISING: CORRUGATING A WEB MATERIAL TO FORM ALTERNATING CREST AND TROUGH AREAS, APPLYING ADHESIVE COATINGS TO THE CORRUGATED WEBS AND FORMING A STACK OF SAID ADHESIVE COATED WEBS SO THAT SAID CREST AND THEOUF AREAS ARE IN SUBSTANTIAL NESTING ALIGNMENT, SAID ADHESIVE IS APPLIED MAY TO THE EXTREME OUTER SURFACE OF THE CRESTS OF ONE LAYER OF CORRUGATED WEB AND SAID ADHESIVE IS APPLIED ONLY TO THE EXTREME INNER SURFACES OF THE THROUGHS, OF ANOTHER LAYER OF CORRUGATED WEB, AND, WHEREIN THE LAYERS OF WEB ARE STACKED TOGETHER BY ALTERNATING AN OUTER CREST COATED WEB WITH AN INNER TROUGH COATED WEB, SO THAT THE ADHESIVE COATINGS ALL FACE IN THE SAME DIRECTION, AND, APPLYING PRESSURE TO THE STACKED WEBS WHILE ALLOWING THE ADHESIVE COATINGS TO CURE, EXPANDING SAID BONDED WEBS TO FROM AN OPEN CELLED HONEYCOMB STRUCTURE.
Claim 15
Dependent Claim
144 words
A PROCESS FOR THE MANUFACTURE OF HONEYCOMB COMPRISING: CORRUGATING A WEB MATERIAL TO FORM ALTERNATING CREST AND TROUGH AREAS, APPLYING ADHESIVE COATINGS TO THE CORRUGATED WEBS AND FORMING A STACK OF SAID ADHESIVE COATED WEBS SO THAT SAID CREST AND THEOUF AREAS ARE IN SUBSTANTIAL NESTING ALIGNMENT, SAID ADHESIVE IS APPLIED MAY TO THE EXTREME OUTER SURFACE OF THE CRESTS OF ONE LAYER OF CORRUGATED WEB AND SAID ADHESIVE IS APPLIED ONLY TO THE EXTREME INNER SURFACES OF THE THROUGHS, OF ANOTHER LAYER OF CORRUGATED WEB, AND, WHEREIN THE LAYERS OF WEB ARE STACKED TOGETHER BY ALTERNATING AN OUTER CREST COATED WEB WITH AN INNER TROUGH COATED WEB, SO THAT THE ADHESIVE COATINGS ALL FACE IN THE SAME DIRECTION, AND, APPLYING PRESSURE TO THE STACKED WEBS WHILE ALLOWING THE ADHESIVE COATINGS TO CURE, EXPANDING SAID BONDED WEBS TO FROM AN OPEN CELLED HONEYCOMB STRUCTURE.
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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |