Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With cutting – punching – piercing – severing – or tearing
Patent
1976-03-30
1976-12-28
Drummond, Douglas J.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With cutting, punching, piercing, severing, or tearing
156583, B32B 3100
Patent
active
040000290
ABSTRACT:
A die assembly and machine incorporating the die assembly are disclosed which are operable to cut and hermetically seal irregularly shaped unstripped receptacles in overlying sheets of polyethylene material. The die assembly includes a first die means having a body portion and a cutting edge surface projecting therefrom which defines an irregular shape. An access opening extends through the body portion and is substantially encompassed by the cutting edge surface. A second die means has an external contour conforming to the irregular shape and is positioned within the cutting edge surface. The second die means is operable by means extending through the access opening of the body portion and includes a projecting sealing edge surface which is juxtaposed to the cutting edge surface. The body portion may be provided with cartridge heaters that provide the source of heat for both the cutting and the sealing operations. In operation the second die means is guided vertically by the cutting edge surface of the first die means. The cutting edge surface is heated by conduction from the body portion; similarly, the sealing edge surface is heated by conduction from the body portion. However, the sealing edge surface is only heated while the second die means is in a heat receiving position with the first die means.
REFERENCES:
patent: 3505149 (1970-04-01), Sanchez
patent: 3522133 (1970-07-01), Gross
patent: 3717538 (1973-02-01), Hartung
patent: 3868291 (1975-02-01), Benz et al.
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