Polyolefin bottles with glossy surface

Details Polyolefin bottles with glossy surface Polyolefin bottles with glossy surface

1991-12-04

1994-07-19

Nold, Charles R.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428421, 428 3692, 215 1C, 215 121, 525199, B65D 2300

Patent

active

053308085

ABSTRACT:
A bottle having a glossy surface, with a gloss of at least 50 on its external surface. The bottle has its external surface formed from a polymer selected from linear polyethylene having a density of at least about 0.940 g/cm.sup.3, a melt index of less than 2.0 dg/min and a stress exponent of less than 1.5. Preferably the polymer contains at lease 400 ppm of a fluoroelastomer processing aid. A process for making bottle with a glossy surface, consisting essentially of blow moulding polymer in continuous extrusion blow moulding apparatus or injection blow moulding apparatus, using a mould with a polished surface and a shear rate of less than 10 000 sec.sup.-1.

REFERENCES:
patent: 3998914 (1976-12-01), Lillis et al.
patent: 4943458 (1990-07-01), Buecheler
patent: 4983677 (1991-01-01), Johnson et al.

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