Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Patent
1980-10-06
1985-12-17
Cannon, James C.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
428 35, 428130, 428201, 428211, 493 59, 493 60, 493 61, 493160, 493161, 493396, 493404, B26D 308, B32B 330, B65D 542
Patent
active
045592594
ABSTRACT:
A packing laminate which is intended to be converted into packing containers is often provided with crease lines in order to facilitate folding and shaping. At the places where crease lines cross each other a multiple folding of the laminate takes place on conversion into packing containers which, among other things, means that small cracks are formed in the different material layers, so that the tightness of the packing container is put into jeopardy. In accordance with the invention, a packing laminate is proposed in which these difficulties are overcome by providing the laminate with specially designed auxiliary crease lines which in the region of the laminate, where the folding lines cross each other or meet, replace the (main) crease line guiding the folding line. The auxiliary crease lines are situated at such a distance from the main crease line that the folding line is not affected, that is to say, the folding line will after folding not coincide in any part with the auxiliary crease lines. The auxiliary crease lines will merely be situated on either side of the folding line in such a manner that the auxiliary crease lines take up and guide the crease formation or "wrinkling" which normally arises in the inner laminate layer in the folding line itself.
REFERENCES:
patent: 1650051 (1927-11-01), Smith
patent: 1758230 (1930-05-01), Lange
patent: 2558918 (1951-07-01), Zinn, Jr.
patent: 2634046 (1953-04-01), Weber
patent: 3240845 (1966-03-01), Voelker
patent: 3526566 (1970-04-01), McIlvain
patent: 4129065 (1978-12-01), Corse
patent: 4265390 (1981-05-01), Faller et al.
patent: 4287247 (1981-09-01), Reil et al.
Cannon James C.
Tetra Pak International AB
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