Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1980-12-02
1986-01-28
Wityshyn, Michael
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156227, 156269, 156270, 1562753, 1562757, 156277, 156291, 493332, 493333, 493933, 493936, B29D 2310, B32B 3120
Patent
active
045669279
ABSTRACT:
A method and apparatus for high speed pouch or bag making from thin, heat-sensitive thermoplastic film webs or multiply webs of paper, film and foil in which the seal pattern may be simple or complex sealing and in which the method is applied to a continuously moving web and sealing is achieved at temperatures below the softening temperatures of the film or the sealing interfaces. A method of forming an open pouch comprising the steps of continuously driving an elongated web of pouch forming material at a constant speed along a pouch making path which extends continuously through a web coating station, a web collating station, an E.B. curing station and a web cutting station. A pattern of a coating is applied to a first surface of a first continuous web of pouch forming material as it is driven continuously through the web coating station to render the interface bondable at a seal line and non-bondable in the area of the storage compartment when subjected to electron beam radiation. A second web is directed into a face-to-face relationship with the first web in the collating station and the collated webs are driven through the E.B. curing station and irradiated with E.B. radiation to bond the bondable areas of the web at the interface while leaving the non-bondable areas free from securement and the pouches are cut from the webs by severing along transverse cut lines.
REFERENCES:
patent: 2256506 (1941-09-01), Wagner
patent: 3660217 (1972-05-01), Kehr et al.
patent: 3776798 (1973-12-01), Milano
patent: 3952868 (1976-04-01), Muller et al.
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