Injection molding process for making laboratory test-tubes and mold to be used in the molding process thereof

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United States of America Patent

PATENT NO 8168099
APP PUB NO 20100314802A1
SERIAL NO

12832192

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Abstract

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A laboratory test tube is formed between male and female mold elements by injection of molten plastic material. The female element has a bottom element formed by first and second alternating complementarily shaped wedges. At least the second wedges are able to move under the pressure of the molten plastic from a rest position to an operative position in order to form slits which allow air, but not molten plastic, to exit from the mold.

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Patent Owner(s)

  • VACUTEST KIMA S.R.L.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chiarin, Renzo Arzergrande, IT 6 36

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