Method for wrapping up a cassette case in a thin film

Details Method for wrapping up a cassette case in a thin film Method for wrapping up a cassette case in a thin film

1998-12-30

2000-05-16

Johnson, Brian L.

Package making

Methods

Forming a cover adjunct or application of a cover adjunct to...

531336, 531337, 2063871, 493212, B65B 6118

Patent

active

06061997&

ABSTRACT:
A wrapping method in which a wrapped product is wrapped by a sheath film and partly-overlapped portions of the sheath film are melt-bonded by heat to heat-seal the sheath film. When the user opens the sheath film, the user can tear the same with ease. A heat sealing area of the sheath film (1) is printed by a halftone printing portion (10) to uniformly reduce the whole bonding area, thereby decreasing a bonding strength.

REFERENCES:
patent: 2694964 (1954-11-01), Smith et al.
patent: 4872301 (1989-10-01), Langen et al.
patent: 5011014 (1991-04-01), Borck et al.
patent: 5129518 (1992-07-01), Tanaka et al.
patent: 5316209 (1994-05-01), Tomisawa et al.
patent: 5630308 (1997-05-01), Guckenberger
patent: 5758473 (1998-06-01), Patelli
patent: 5921464 (1999-07-01), Seki

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