Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1992-02-14
1998-06-16
Seidleck, James J.
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
428 357, 428516, 4289033, 428212, 215 1C, B29D 2200
Patent
active
057667128
ABSTRACT:
A plastic blow molded container (10) including a coextruded blow molding (12) has a wall (22) including: (a) an inner layer (26) of a virgin plastic; (b) an inner intermediate layer (28) of recycled plastic which is relatively dark; (c) an outer intermediate layer (30) of an opaque plastic that visually hides the dark recycled plastic; and (d) an outer layer (32) of a pigmented plastic of a lighter color which is not visually distorted by the darker inner intermediate layer (28) of recycled plastic due to the opaqueness of the outer intermediate layer (30). Titanium dioxide is preferably utilized to provide the opaqueness of the outer intermediate layer (30) in order to visually block the darker color of the recycled plastic of the inner intermediate layer (28). The inner layer (26) of virgin plastic, the outer intermediate layer (30) of opaque plastic and the outer layer (32) of pigmented plastic each has a thickness that is at least about 0.1 of the total thickness of the wall, and the inner intermediate layer (28) of recycled plastic normally will have a thickness on the order of about 0.55 to 0.65 of the total thickness of the wall. The construction of the container has particular utility when the wall 22 including each of its layers is made of high density polyethylene.
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Darr Richard C.
Kitzmiller Michael C.
Plastipak Packaging, Inc.
Seidleck James J.
Williamson Michael A.
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