Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Patent
1985-05-20
1987-03-10
Van Balen, William J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
156283, 264126, 4283173, 428327, 428349, 428357, 428402, 428407, B32B 516, B32B 518, B32B 712, C09J 702
Patent
active
046490779
ABSTRACT:
This invention relates to a heat activatable adhesive formed from at least two components each in the form of discrete, flowable particles which are capable of adhering in abutment of one particle with another to provide an open structured, porous matrix. The adhesive may be in the form of a sheet formed by blending the particles of each component, applying the mechanical mixture to a supporting sheet, heating the mixture and supporting sheet to the temperature at which the material with the lowest tackifying temperature becomes tacky, applying pressure sufficient to partially flatten the largest particles to a degree such that their minimum dimension is substantially equivalent to the thickness of the layer formed on said support sheet and during or after said pressure application.
REFERENCES:
patent: 3067469 (1962-12-01), Yarrison
patent: 3267187 (1966-08-01), Slosberg et al.
patent: 3354247 (1969-11-01), Zehender et al.
patent: 3922418 (1975-11-01), Lauchenauer
patent: 4115499 (1978-09-01), Salyer et al.
patent: 4323531 (1982-04-01), Bradley et al.
Adnovum AG
Van Balen William J.
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