Laminating method and products made thereby

Details Laminating method and products made thereby Laminating method and products made thereby

1995-05-25

1996-11-26

Ryan, Patrick

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428 57, 428 58, 428103, 428280, 428282, 428284, 428286, 428288, 428289, 4284111, 4284242, B32B 528, B32B 3100, C08G 5924, D04H 1100

Patent

active

055783694

ABSTRACT:
A method of preparing a laminate having increased peel strength and solvent resistance which involves (A) applying an adhesive composition to a surface of a first sheet; (B) exposing the adhesive composition on the surface of the first sheet to incoherent, pulsed ultraviolet radiation from a dielectric barrier discharge excimer lamp; (C) bringing a surface of a second sheet in contact with the adhesive composition-bearing surface of the first article; and (D) allowing the adhesive composition to cure. The incoherent, pulsed ultraviolet radiation has a single narrow wavelength band within the range of from about 260 to about 360 nanometers. The adhesive composition includes from about 94 to about 60 percent by weight of a cycloaliphatic diepoxide, from about 1 to about 10 percent by weight of a cationic photoinitiator, and from about 5 to about 30 percent by weight of a vinyl chloride-vinyl acetate-vinyl alcohol terpolymer, all based on the weight of adhesive composition. The sheets desirably are films and nonwoven webs composed of cellulosic fibers, polyolefin fibers, or a mixture of cellulosic fibers and polyolefin fibers. The method is particularly well suited for the preparation of such laminates as industrial wipers, workwear, medical fabrics, and the like.

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