Multi-layer laminated preform and method of its manufacture

Details Multi-layer laminated preform and method of its manufacture Multi-layer laminated preform and method of its manufacture

1995-10-11

1999-04-13

Dye, Rena L.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 369, 428 3691, 428161, 428339, 4285428, 215 122, 215379, 264523, 264512, B29D 2200, B29C 3900

Patent

active

058940413

ABSTRACT:
A blank (2) is molded for the manufacture of a multi-layer preform (1). The blank possesses protrusions (5). After the protrusions (5) have been brought to a plasticised state under the action of heat, those surfaces that contain protrusions (5) are covered by a layer of plasticised material. The blank (2) becomes connected to the layer (6) in the area of the protrusions (5). After cooling of the preform created from the blank (2) and the layer (6), the blank (2) will be connected with the layer (6) by means of microweld positions (7) in the area of the said protrusions (5). With that, delamination of the preform (1) during further processing or use-will be effectively prevented.

REFERENCES:
patent: 4307137 (1981-12-01), Ota et al.
patent: 4424834 (1984-01-01), Sumi et al.
patent: 4847129 (1989-07-01), Collette et al.
patent: 4948016 (1990-08-01), Summons et al.
patent: 4980100 (1990-12-01), Krishnakumar et al.
patent: 5508076 (1996-04-01), Bright

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