Large blow moldings made from polyethylene

Details Large blow moldings made from polyethylene Large blow moldings made from polyethylene

2005-07-05

2005-07-05

Nolan, Sandra M. (Department: 1772)

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Differential temperature conditioning

C264S539000, C428S035700

Reexamination Certificate

active

06913729

ABSTRACT:
Large blow moldings are made from polyethylene of density ρ≧0.94 g/cm3and of melt flow rate MFR 190/21.6<50 g/10 min, and of notched tensile impact strength azK(−30° C.) not less than 300 kJ/m2and bursting strength, determined by a drop height test at −18° C., of more than 3 m. Processes for producing large blow moldings of this type involve annealing large blow moldings after production. The moldings are used for storage and transport of hazardous materials.

REFERENCES:
patent: 6244454 (2001-06-01), Yoshioka et al.
patent: 6391412 (2002-05-01), Hata et al.
patent: 2001/0009242 (2001-07-01), Czesak et al.

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