Method for forming particle-impregnated one-sided cling stretch

Details Method for forming particle-impregnated one-sided cling stretch Method for forming particle-impregnated one-sided cling stretch

1989-02-21

1990-10-16

Lawrence, Evan

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427 141, 427 32, 427180, 264 24, 264130, 264131, B05D 508, B05D 106, B05D 704, B29C 5904

Patent

active

049633880

ABSTRACT:
A method for forming a one-sided cling stretch wrap film by adhering a particulate antiblock to one surface of the film while the surface is in a semiplastic state, applying a particle-embedding force to the surface and removing excess particulate matter. The thermoplastic stretch wrap film exhibits a significant level of cling on one surface but no appreciable cling force on the other, the latter surface exhibiting a slide property when in contact with a film or like surface due to the presence of particulate antiblock agent mechanically bonded thereto. The film can be used to overwrap one or a group of articles to form a unitized packaged unit employing any of the known and conventional tension-wrapping techniques. Because of its one-sided cling and slide capabilities, pallet loads overwrapped with the film and in mutual contact avoid film tearing or destruction when the pallet loads are separated from each other.

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