US5211792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of laminating multiple layers
Assignee: Individual
•
Filing: 1992-05-21
•
Granted: 1993-05-18
•
Expires: 2012-05-21
Abstract
Abstract A preheatable scrim and method of use for bonding together multiple layers of materials to form a laminate. The scrim includes a carrier layer which is impregnated with an adhesive having a melting point such that it can set and hold a bond. The scrim is preheated to its activation temperature and sandwiched between the materials layers. The sandwich is pressed together to bond the layers.
Inventors
- 👤 Richard Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:25
CPC Classifications
B; B32; B32B; B32B37/00; B32B37/12; B32B37/1284; B29; B29C; B29C70/00; B29C70/68; B29C70/685; B29C70/687; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1043; Y10T156/1044
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
168 words
A method of bonding together two layers of material to produce a contoured laminate, said method comprising: providing said two layers at a first temperature; providing a flexible carrier; depositing a thermoplastic adhesive on said carrier to form an adhesive/carrier composite, said adhesive characterized in that it has a sharp melting point such that it can set and hold a bond; preheating the composite to a second temperature substantially higher than the first temperature, said second temperature being the activation temperature of the adhesive, while maintaining said two layers at said first temperature; placing the preheated composite at said second temperature between said two layers to form a sandwich assembly; pressing the sandwich assembly together to achieve intimate contact between the layers of material and the composite such that said layers act as a heat sink to rapidly cool said composite below said second temperature; maintaining said intimate contact for a time period sufficient to achieve bonding; and cold molding the sandwich assembly to form a contoured laminate.
Claim 2
Independent Claim
168 words
A method of bonding together two layers of material to produce a contoured laminate, said method comprising: providing said two layers at a first temperature; providing a flexible carrier; depositing a thermoplastic adhesive on said carrier to form an adhesive/carrier composite, said adhesive characterized in that it has a sharp melting point such that it can set and hold a bond; preheating the composite to a second temperature substantially higher than the first temperature, said second temperature being the activation temperature of the adhesive, while maintaining said two layers at said first temperature; placing the preheated composite at said second temperature between said two layers to form a sandwich assembly; pressing the sandwich assembly together to achieve intimate contact between the layers of material and the composite such that said layers act as a heat sink to rapidly cool said composite below said second temperature; maintaining said intimate contact for a time period sufficient to achieve bonding; and cold molding the sandwich assembly to form a contoured laminate.
Claim 3
Dependent Claim
28 words
The method of claim 1 wherein the step of depositing adhesive on the carrier is performed by melting the adhesive and dipping the carrier into the molten adhesive.
Claim 4
Dependent Claim
18 words
The method of claim 2 comprising the further step of brining the dipped carrier over a roll coater.
Claim 5
Dependent Claim
22 words
The method of claim 2 comprising the further step of bringing the dipped carrier over a knife edge to removed excess adhesive.
Claim 6
Dependent Claim
39 words
The method of claim 1 wherein the adhesive is provided as an adhesive film and the step of depositing the adhesive on the carrier is performed by pressing the carrier and the adhesive film together with a heated roller.
Claim 7
Dependent Claim
29 words
The method of claim 1 wherein the adhesive is provided as an adhesive film and the step of depositing the adhesive on the carrier is performed by flame laminating.
Claim 8
Dependent Claim
33 words
The method of claim 1 wherein the adhesive is provided as an adhesive film and the step of depositing the adhesive on the carrier is performed by convection heating with a hot wire.
Claim 9
Dependent Claim
29 words
The method of claim 1 wherein the carrier is provided in the form of a material selected from the group consisting of: metal wire, synthetic fibers, and natural fibers.
Claim 10
Dependent Claim
18 words
The method of claim 1 wherein the carrier is in the form of a woven, fiberglass open-mesh mat.
Claim 11
Dependent Claim
52 words
The method of claim 1 wherein the carrier is woven or knitted to form a grid having from between one strand every four linear inches to 200 strands per linear inch in both directions for conventional two direction construction, the grid not to exceed 400 strands per square inch in all directions.
Claim 12
Dependent Claim
22 words
The method of claim 10 wherein each individual strand of the grid has a diameter less than or equal to 0.200 inches.
Claim 13
Dependent Claim
39 words
The method of claim 1 wherein the carrier is formed of a non-woven, fibrous material, each of the fibers having a diameter equal or less than 0.200 inches, with the number of strands per square inch not exceeding 4000.
Claim 14
Dependent Claim
35 words
The method of claim 1 wherein the carrier is formed of a thin film selected from the group consisting of: metal foil, and plastic film, and both surfaces of said film are coated with adhesive.
Claim 15
Dependent Claim
28 words
The method of claim 1 wherein each of said layers has a respective degradation temperature and said second temperature is substantially higher than either of said degradation temperatures.
References Cited (Backward Citations)
US3068130A
Cited
US3644157A
Cited
US3850725A
Cited
US3765998A
Cited
US3837992A
Cited
US3862877A
Cited
US3996082A
Cited
US4129672A
Cited
US4128682A
Cited
US4314867A
Cited
US4221619A
Cited
US4571279A
Cited
US4497678A
Cited
US4500594A
Cited
US4445954A
Cited
US4711681A
Cited
US4563229A
Cited
US4731276A
Cited
US4588458A
Cited
US4927483A
Cited
US4740417A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-05-17 | 1996-11-16 | 1997-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-17 | 2000-11-16 | 2001-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-17 | 2004-11-16 | 2005-05-18 | $7700.00 | Window Closed / Lapsed |