Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Patent
1992-02-28
1994-03-29
Hoke, Veronica P.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
404 32, 524393, 524493, 524574, 524576, 524580, 524581, 26433115, B29C 4500
Patent
active
052982173
ABSTRACT:
Compositions and designs useful for fabricating safety cushion and mat assemblies which have effective protection against injuries to persons falling from a height up to seven feet are disclosed. The safety cushion compositions have a shore hardness of about 68, comprises an ethylene/propylene rubber, an activator, an accelerator, a plasticizer, a vulcanizer, a filler, a processing aid agent and optionally a colorant or a whitener. In addition, compositions useful for fabricating a reinforced rubber anchor for securing the safety cushion and mat assemblies to the ground are disclosed. The rubber anchor composition has a shore hardness of about 73 and comprises a natural rubber, a processing aid agent, a plasticizer, a filler, an antioxidant, an antiozonant, an activator, an accelerator, a vulcanizer, an inhibitor and optionally a colorant or a whitener. Methods of fabricating the safety cushion, mat assemblies and securing anchors described above improves the fabricating process so that larger pieces of safety cushion can be molded and that the composition material does not stick to the mold thereby increases production efficiency.
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Hoke Veronica P.
Mitchell Rubber Products, Inc.
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