Stock material or miscellaneous articles – Sheet – web – or layer weakened to permit separation through...
Patent
1994-03-04
1997-01-21
Nakarani, D. S.
Stock material or miscellaneous articles
Sheet, web, or layer weakened to permit separation through...
206222, 206265, 229 8705, 229 8713, 428 77, 428337, 428343, 428354, 428500, 428515, 428910, B31B 190
Patent
active
055958036
ABSTRACT:
A teartape for packaging materials, and particularly such materials based on polyolefin films, includes a base film coated with a pressure sensitive adhesive composition. The teartape is affixed to the packaging material by the adhesive composition. This avoids the problem of distortion which can occur when affixing conventional teartapes to such packaging materials by means of hot melt wax compositions. The teartape is applied to moving packaging material by controlling the speed of the teartape in accordance with the speed of the packaging material so as to reduce tension imbalance. The speed of the teartape may be controlled in dependence upon the tension in the teartape. This can be achieved by supplying the teartape from a dispenser having a brake means (4,5) and a drive means (10,11,12) for regulating the speed of the teartape in dependence on the tension in the teartape.
REFERENCES:
patent: 3993826 (1976-11-01), Butler et al.
patent: 4137362 (1979-01-01), Miki et al.
patent: 4173676 (1979-11-01), Asakura et al.
patent: 4337284 (1982-06-01), Cooper et al.
patent: 4544590 (1985-10-01), Egan
patent: 4844962 (1989-07-01), May et al.
Davis Brian F.
May Geoffrey B.
Nowak Wladyslaw L.
Nakarani D. S.
P. P. Payne Limited
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