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US4484883A Multi-layer extrusion die 失效
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Multi-layer extrusion die
摘要:
A multi-layer extrusion die wherein a temperature control mechanism for heating or cooling an inner layer resin is provided inside an inner layer resin flow path, and resins flowing through respective resin flow paths are each heated to a suitable temperature so as to eliminate possibilities of occurrence of burning of the resin and the like.
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