Plastic injection molding and process

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United States of America Patent

PATENT NO 9216836
SERIAL NO

13108373

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Abstract

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Plastic containers are described herein that are injection molded with an high density polyethylene (HDPE) blow molding grade resin having a density of about 0.960 to about 0.965 g/cc and a melt index of about 0.7 to about 1.0 g/10 min. at injection temperatures of about 570° F. to about 670° F. and mold cavity pressures of about 20,000 psig to about 27,000 psig. Relatively thin walled, rigid, containers, such as livestock feed containers, may be manufactured as described using about 20% to 50% less material while retaining strength and durability comparable to containers molded of HDPE injection molding grade resins.

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Patent Owner(s)

  • MAXI-LIFT, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hansen, Charles Irving, US 16 121
Sahm,, III Victor A Dallas, US 16 98

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