Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1986-05-16
1988-10-18
Lowe, James
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156264, 156265, 156267, 264152, 264153, 264512, B29C 5102, B32B 3120
Patent
active
047785519
ABSTRACT:
This invention encompasses a process for making multilayer containers by conventional roll fed sheet method, with minimal scrap loss, which comprises the steps of preparing a monolayer sheet of a first thermoplastic material by conventional roll fed sheet methods, cutting or punching billets from a second thermoplastic material sheet, heating the monolayer sheet and the billets to a temperature where both the sheet and the billets become tacky, placing the billets at a position on the sheet so that the billets are in a position over forming cavities in a forming mold at the time of forming, while maintaining the billets and sheet at a temperature where the sheet and billets are tacky and weld together, and forming containers from the welded billets and sheet so that the web scrap left after forming is pure monolayer sheet.
REFERENCES:
patent: 2618311 (1952-11-01), Parker
patent: 2965932 (1960-12-01), Knowles
patent: 3318748 (1967-05-01), Hurst
patent: 3519514 (1970-07-01), Ignell et al.
patent: 3523474 (1970-08-01), Kinslow, Jr.
patent: 4145240 (1979-03-01), Polzin
patent: 4181551 (1980-01-01), Ward
patent: 4234536 (1980-11-01), Thiel et al.
Lowe James
Rampart Packaging Inc.
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