Method and apparatus for separating from each other two thin, sl

Manufacturing container or tube from paper; or other manufacturi – Container making – Pliable container

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493255, 493256, 493268, 29428, 53459, 53410, 53128, 53385, B65B 4334, B65B 4336, B65B 6100

Patent

active

044682131

ABSTRACT:
When two sheets of slack material, for example the two sides of a paper or plastics bag, are to be separated by means of a pointed tool, problems arise because the two sheets can easily bend over, both in the same direction. If moreover these sheets are formed from smooth material, they also adhere together by vacuum sealing or by electrostatical forces. The solution for these problems is to enclose the sheets into a positioning block, in which a hollow space is recessed or saved for receiving the volume of the pointed tool to be driven thereinbetween. This driving-in of the pointed tool can be combined with the issuance of pressurized air between the sheets. To this end the pointed tool is provided with grooves for guiding the pressurized air or with a separate blow-pipe slidable over the pointed tool.

REFERENCES:
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patent: 3260170 (1966-07-01), Barraclough
patent: 3381446 (1968-05-01), Marchand
patent: 3474836 (1969-10-01), Schwake et al.
patent: 3572401 (1971-03-01), Nelson et al.
patent: 3592004 (1971-07-01), Lense
patent: 3692301 (1972-09-01), Wetter
patent: 3775945 (1973-12-01), Kuhnle
patent: 4158943 (1979-06-01), Lack et al.
patent: 4183194 (1980-01-01), Lucke
patent: 4241562 (1980-12-01), Meyer

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