Re: Injection moulding in silicone (vacuum) molds!(?)

From: Douglas A. VanPutte (
Date: Wed Jul 05 2000 - 17:23:58 EEST


Mr. Dave Comeau
Albright Plastics
92 Albright Road
Sterling, MA 01564

Dave has been supplying prototypes using silicone rubber injection molds for
several years.


Douglas A. VanPutte Consultant & Manufacturers' Agent Cross-Bow Rapid Tool Associates, Inc. 18 Cross Bow Drive Rochester, NY 14624-4710 Tel: 716-889-3601 Fax: 716-889-7335 Cell: 716-329-1308 Email: Web:

---------- From: "JBVentures" <> To: <> Subject: Injection moulding in silicone (vacuum) molds!(?) Date: Wed, Jul 5, 2000, 9:25 AM

Hello all,

I was wondering if anyone has ever done a test by injecting heated liquid polymer (for instance PE or ABS) into a well and tightly surrounded/supported (vacuumcasting-type) of silicone mould. Anyone have a clue what would happen? Anyone know the Tg of the typical silicone material? Are there flexibele (40-50 shore A) Urethanes or other pourable materials with a higher Tg as silicone wich would suit to get better (heat)resistance? Anyone have suggestions, theories or input if we do a test with it? Waiting for your reply on our foreseen experiment, kind regards,

Jorn Berends -------------------------------------------- JB Ventures BV Bedrijvenpark Twente 165c 7602 KE Almelo <>


For more information about the rp-ml, see

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