Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1988-03-16
1990-04-03
Dawson, Robert A.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156245, 156285, 156300, 128 80H, 128 89R, 128166, 425388, 264516, B32B 3116, B32B 3118
Patent
active
049137557
ABSTRACT:
A method for forming gel-filled cushion pads that provide a resilient support against the ankle, comprises the use of a vacuum chamber substantially covered at the top with a perforated base plate. A thin, rubber foam layer spacer pad with openings is overlaid on the base plate. A thin, rubber foam layer front pad with openings is overlaid on the spacer pad in alignment with the spacer pad openings. Adhesive material is coated on the top surface of the front pad. A thin layer of urethane is overlaid on the adhesive coated upper surface of the front pad and vacuum is applied to pull the urethane layer toward the base plate. With the urethane layer substantially conformed to the inner walls of these pads, a patterned pocket is formed for receiving liquid gel. Then, a predetermined amount of liquid gel is poured into this pocket and allowed to cool and solidify to form a dense semi-solid gel. A rubber foam back pad covered with adhesive material on its bottom surface is then overlaid onto the urethane layer to enclose the gel material between the urethane film, and the back pad. The assembly comprising the back pad, gel layers, front pad, and urethane layer is removed from the base plate. Because each front pad may include several patterned opening on its surface, several contiguous units of gel-filled cushion pads may be formed in this process and cut accordingly.
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patent: 4628945 (1986-12-01), Johnson, Jr.
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patent: 4671267 (1987-06-01), Stout
Dawson Robert A.
Royce Medical Company
Yoder Michele K.
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