US3840419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing a laminate by means of a solventless adhesive
Assignee: UCB SA
•
Filing: 1971-12-17
•
Granted: 1974-10-08
•
Expires: 1991-12-17
Abstract
Abstract A method of manufacturing a laminate having a width of at least 30 cm. by means of a solventless adhesive, wherein, a first stage, a solventless adhesive is continuously supplied to a distributor means comprising a pre-dosing element and an elasticsurfaced rotating element in such a manner as to coat the surface of the elastic-surfaced rotating element with a layer of solventless adhesive having a thickness of from 5 to 50 microns, the layer then being substantially transferred to a moving film to be laminated, the circumferential speed of the elasticsurfaced rotating element and the speed of linear displacement of the film being in a ratio of from 1:10 to 1:50, so that the film receives a layer of solventless adhesive of a thickness of from 0.5 to 5 microns, and, in a second stage, the film coated in this manner is bonded in known manner to another film to form a laminate.
Inventors
- 👤 Keyser R De
- 👤 A Depuydt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:50
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B37/00; B32B37/12; B32B37/1284; B32B37/14; B32B37/16; B32B37/20; B32B7/00; B32B7/04; B32B7/12; B32B2439/00; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1702; Y10T156/1712; Y10T156/1741; Y10T156/1798
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
166 words
A method of manufacturing a laminate having a width of at least 30 cm. by means of a solventless adhesive, said method comprising the steps of: providing an adhesive distributor means including a predosing element and an elastic-surfaced rotating element adjacent said predosing element; rotating said elastic-surfaced rotating element; continuously supplying solventless adhesive to said distributor means between said elastic-surfaced rotating element and said predosing element; applying all of said solventless adhesive from said predosing element to said elastic-surfaced rotating element in a layer having a thickness of from 5 to 50 microns; moving with respect to said elastic-surfaced rotating element a first film at a linear speed of from 10 to 50 times the circumferential speed of said elastic-surfaced rotating element; transferring all of said layer of solventless adhesive from said elastic-surfaced rotating element to said first film in a coating having a thickness of from 0.5 to 5 microns; and bonding said thus coated first film to a second film to form a laminate.
Claim 2
Independent Claim
166 words
A method of manufacturing a laminate having a width of at least 30 cm. by means of a solventless adhesive, said method comprising the steps of: providing an adhesive distributor means including a predosing element and an elastic-surfaced rotating element adjacent said predosing element; rotating said elastic-surfaced rotating element; continuously supplying solventless adhesive to said distributor means between said elastic-surfaced rotating element and said predosing element; applying all of said solventless adhesive from said predosing element to said elastic-surfaced rotating element in a layer having a thickness of from 5 to 50 microns; moving with respect to said elastic-surfaced rotating element a first film at a linear speed of from 10 to 50 times the circumferential speed of said elastic-surfaced rotating element; transferring all of said layer of solventless adhesive from said elastic-surfaced rotating element to said first film in a coating having a thickness of from 0.5 to 5 microns; and bonding said thus coated first film to a second film to form a laminate.
Claim 3
Dependent Claim
31 words
A method according to claim 1, wherein the surface of the elastic-surfaced rotating element is coated with a layer of solventless adhesive having a thickness of from 10 to 25 microns.
Claim 4
Dependent Claim
35 words
A method according to claim 1, wherein the circumferential speed of the elastic-surfaced rotating element and the linear speed of displacement of said first film is in a ratio of from 1: 10 to 1:15.
Claim 5
Dependent Claim
25 words
A method according to claim 1, wherein said first film receives a coating of solventless adhesive of a thickness of from 1 to 2.5 microns.
Claim 6
Dependent Claim
28 words
A method according to claim 1, whErein the layer of solventless adhesive disposed on the elastic-surfaced rotating element is transferred directly to said first film to be coated.
Claim 7
Dependent Claim
56 words
A method according to claim 1, wherein the layer of solventless adhesive disposed on the elastic-surfaced rotating element is transferred to said first film to be coated by means of an intermediate rotating cylinder of smooth-surfaced rigid material, the circumferential speed of which is at least 10 times greater than that of the elastic-surfaced rotating element.
Claim 8
Dependent Claim
79 words
A method according to claim 1, wherein the layer of solventless adhesive disposed on the elastic-surfaced rotating element is transferred to said first film to be coated by means of an intermediate rotating cylinder of smooth-surfaced rigid material, the circumferential speed of which is at least 10 times greater than that of the elastic-surfaced rotating element and the linear speed of displacement of the film to be coated is equal to the circumferential speed of the intermediate rotating cylinder.
Claim 9
Dependent Claim
79 words
A method according to claim 1, wherein the layer of solventless adhesive disposed on the elastic-surfaced rotating element is transferred to said first film to be coated by means of an intermediate rotating cylinder of smooth-surfaced rigid material, the circumferential speed of which is at least 10 times greater than that of the elastic-surfaced rotating element, and the linear speed of displacement of the film to be coated is greater than the circumferential speed of the intermediate rotating cylinder.
Claim 10
Dependent Claim
19 words
A method according to claim 1, wherein said first film to be laminated is made of a plastics material.
Claim 11
Dependent Claim
16 words
A method according to claim 1, wherein said first film to be coated is a laminate.
Claim 12
Dependent Claim
28 words
A method according to claim 1, wherein said first film to be coated is a laminate produced according to the method of claim 1 during a previous pass.
Claim 13
Dependent Claim
19 words
A method according to claim 1, wherein said second film bonded to said coated first film is a laminate.
Claim 14
Dependent Claim
31 words
A method according to claim 1, wherein the second film bonded to said coated first film is a laminate produced according to the process of claim 1 during a previous pass.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |