Blow air supply unit for blow molding machine

Details Blow air supply unit for blow molding machine Blow air supply unit for blow molding machine

2006-12-13

2011-10-04

Davis, Robert B (Department: 1743)

Plastic article or earthenware shaping or treating: apparatus

Female mold and means to shape parison directly by internal...

With heating or cooling means

C425S535000

Reexamination Certificate

active

08029269

ABSTRACT:
Inner surface strain of a container is reduced by suppressing a temperature drop of blow air, and heat resistance of the container is increased by enhancing the degree of crystallization. A blow air supply unit for a blow molding machine for molding a hollow bottle container1by supplying heated blow air into a preform includes: a high-pressure air source11for generating high-pressure blow air; a high-pressure gate valve12for opening/closing a blow air channel on the downstream of the high-pressure air source11; a heat exchanger13for heating the blow air on the downstream of the high-pressure gate valve12; a throttle valve14for throttling the flow rate of blow air on the downstream side of the heat exchanger13; and a switchover valve15for switching the blow air on the downstream of the throttle valve14.

REFERENCES:
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patent: 5962039 (1999-10-01), Katou et al.
patent: 2004/0156942 (2004-08-01), Schulze Uphoff et al.
patent: H01-133714 (1989-05-01), None

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