Method and apparatus for forming filled cushions, and filled cus

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

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53403, 53454, 156146, 156147, 156156, 156290, 156292, 1563084, 156324, 264516, 264545, 264572, 428 69, 428 76, B32B 3120

Patent

active

056606621

ABSTRACT:
Apparatus for joining cohesive coated plastic sheets in a closed peripheral pattern with bulging of at least one sheet within the closed peripheral pattern to provide a sealed compartment containing only a gas such as air, or foam, under superatmospheric pressure. A method for forming a sealed bulging compartment containing substantially only a gas at superatmospheric pressure comprises joining two cohesive material coated sheets by engagement of said portions of said cohesive material coating at a closed periphery while causing at least one of the sheets to be bulged by gas at superatmospheric pressure. A bulging sealed cushion formed of two sheets each coated on one side with cohesive, air impervious material, at least one of the sheets being bulged outward, and containing substantially only a gas at superatmospheric pressure.

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