Process for forming polyarylenethioether stretched blow-molded v

Details Process for forming polyarylenethioether stretched blow-molded v Process for forming polyarylenethioether stretched blow-molded v

1988-08-18

1989-09-05

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Including application of internal fluid pressure to hollow...

264537, 264235, 264346, B29C 4912

Patent

active

048636690

ABSTRACT:
A process for forming a polyarylenethioether stretched blow molded vessel, by a modified blow molding of a substantially linear polyarylenethioether having a melt viscosity of 3,000 to 20,000 poise [at 310.degree. C., shear rate=200 sec.sup.-1 ]. The modified blow molding involves injecting the polymer in a mold to form a bottomed parison, stretching the bottomed parison along its axis by means of a rod or mandrel, and the stretched bottomed parison is then subjected to blow molding to effect lateral stretching. The blow parison is then heat set.

REFERENCES:
patent: 4362864 (1982-12-01), Idel et al.
patent: 4524045 (1985-06-01), Hayashi et al.
patent: 4579784 (1986-04-01), Lemstra et al.

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