Plastic article or earthenware shaping or treating: apparatus – Sets of shaping couples comprising an endless surface for...
Patent
1979-04-18
1980-08-12
Lowe, James B.
Plastic article or earthenware shaping or treating: apparatus
Sets of shaping couples comprising an endless surface for...
83306, 83480, 93 582R, 226108, 226181, 425291, 425385, B29C 1708
Patent
active
042170850
ABSTRACT:
An arrangement for the processing of a moving material web, in particular for the creasing or punching of an extruded material web made of plastics. In the manufacture of such material webs a number of operational steps take place directly in conjunction with the manufacture of the web itself, and the fact that for reasons of quality as well as of manufacturing technique the extrusion process cannot be interrupted makes it necessary to attend to any changes in the crease pattern etc. during operation. The arrangement in accordance with the invention makes this possible, in that the material web can be brought into contact optionally with different pairs of processing rollers with the help of a pair of counter-rollers supported in a swivelling cradle, any pair of unused rollers being freely exchangeable against a pair of rollers with a different creasing pattern. The arrangement permits the processing of both sides of the web and the rapid exchange of different processing patterns during continuing production, which is particularly advantageous in the processing of material webs for the manufacture of packing containers.
REFERENCES:
patent: 2276394 (1942-03-01), Hill et al.
patent: 2985223 (1961-05-01), Thorn
patent: 3174428 (1965-03-01), Huck
Ljungberg Per-Allan
Nilsson Lennart
Lowe James B.
Tetra Pak International AB
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