Method and apparatus for applying a heated composition to a subs

Details Method and apparatus for applying a heated composition to a subs Method and apparatus for applying a heated composition to a subs

1993-01-29

1994-09-20

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

1562722, 1562757, 1563796, 118620, 427487, 427508, 427516, 427561, B32B 3100

Patent

active

053486048

ABSTRACT:
An extrudable material, such as a hot melt adhesive, is applied to a substrate with simultaneous irradiation by a laser beam. The energy of the laser is absorbed by the adhesive and the substrate to cause the adhesive to spread into the fabric. When applied to a gap between two substrate sheets, the extrudable material creates a very strong bond. When one of the substrate materials is porous, the extrudable material will penetrate the thickness of the material and contact a lower layer to form a bond. The extrudable material is applied through a nozzle, and the laser beam is directed through the nozzle to be coaxial with the flow path of the extrudable material. The coaxial arrangement facilitates movement of the nozzle and beam in complicated patterns and ensures simultaneous application of the extrudable material and the laser beam.

REFERENCES:
patent: 4029535 (1977-06-01), Cannon et al.
patent: 4069080 (1978-01-01), Osborne
patent: 4109431 (1978-08-01), Mazzoni et al.
patent: 4636609 (1987-01-01), Nakamata
patent: 4644127 (1987-02-01), La Rocca
patent: 4861404 (1989-08-01), Neff
patent: 4931125 (1990-06-01), Volkmann et al.
patent: 5043548 (1991-08-01), Whitney et al.

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