Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Forming continuous work followed by cutting
Patent
1992-10-27
1994-09-13
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Forming continuous work followed by cutting
264159, 2642093, 264310, 264312, 425 31, 425 32, 425 38, 425297, B29D 3000
Patent
active
053466632
ABSTRACT:
A method of producing a spliceless annular tread cap (2), whereby a portion (23) of an extruded tube (21) of green elastomeric material is fed inside an annular body (8), the inner annular surface (17) of which presents a diameter approximately equal to but no smaller than the outside diameter of the tubular portion (23), and negatively reproduces the pattern of the finished tread cap (2). The tubular portion (23) is expanded and calendered against the inner surface (17) of the annular body (8) by means of a roller (34) moved into a position coplanar with and eccentric in relation to the annular body (8).
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Bridgestone Corporation
Smith Duane S.
Thomas David A.
Woo Jay H.
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