Mandrel, method of use thereof and production method thereof

Details Mandrel, method of use thereof and production method thereof Mandrel, method of use thereof and production method thereof

2008-07-01

2008-07-01

Gupta, Yogendra (Department: 1791)

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

Rod or tubular preform

C425S403000, C425S469000, C106S038200

Reexamination Certificate

active

11046787

ABSTRACT:
An object of the present invention is to provide a novel mandrel using a used mandrel, a method of use thereof and a production method thereof. The mandrel of the present invention has an inner layer formed from a thermoplastic resin composition containing an age resister and an outer layer made from a thermoplastic resin which covers the outer circumference of the inner layer. Preferably, the mandrel of the present invention is used for forming a rubber hose and preferably, the inner layer of the mandrel of the present invention is made from a thermoplastic composition obtained by pulverizing a used mandrel for forming a rubber hose.

REFERENCES:
patent: 5387098 (1995-02-01), Willden
patent: 5958323 (1999-09-01), Mio et al.
patent: WO 9632442 (1996-10-01), None
patent: 2000-108191 (2000-04-01), None
patent: 2000-326407 (2000-11-01), None
patent: 2000-334748 (2000-12-01), None

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