Coating recoverable sheets

Details Coating recoverable sheets Coating recoverable sheets

1982-10-19

1985-05-07

Lusignan, Michael R.

Coating processes

Flame contact

118 501, 118641, 427296, 427316, 4273741, 427428, 4273935, B05D 308, B05D 302, B05D 128, C23C 1308

Patent

active

045158312

ABSTRACT:
A heat-recoverable polymeric sheet is coated with a solid sheet of heat-activatable sealant by heating the sheet preferably to a temperature above the crystalline melt point of the polymer, applying, preferably by means of a roller, the sealant sheet to the heated polymer sheet while the polymer sheet is at a temperature capable of activating the sealant so as to adhere it to the polymer sheet. The polymer sheet may be flame-brushed after heating and before application of the sheet of sealant. The technique is particularly useful for sheets intended as wrap-around sleeves for use as enclosures, and which thus have closure rails adjacent opposing longitudinal edges thereof.

REFERENCES:
patent: 2027962 (1936-01-01), Currie
patent: 2648097 (1953-08-01), Kritchever
patent: 3086242 (1963-04-01), Cook et al.
patent: 3255034 (1966-06-01), Covington et al.
patent: 3379218 (1968-04-01), Conde
patent: 3597372 (1971-08-01), Cook
patent: 3976528 (1976-08-01), James
patent: 3988399 (1976-10-01), Evans
patent: 4061527 (1977-12-01), Traise
patent: 4425174 (1984-01-01), McLaughlin

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