Method and apparatus for forming a fabricated thermoplastic...

Details Method and apparatus for forming a fabricated thermoplastic... Method and apparatus for forming a fabricated thermoplastic...

B - Operations, Transporting

29

C

93/41, 18/914, 1

B29C 53/34 (2006.01) B29C 57/12 (2006.01)

Patent

CA 2014505

16186-01 ABSTRACT OF THE DISCLOSURE A device for forming a rolled rim at the unrimmed mouth of the body of a container having a body which is fabricated from a sheet of an expanded thermoplastic material, the device including a first member with a first annular rim-forming surface, and a second member which is reciprocable relative to the first member. The second member has a second annular rim-forming surface which forms a generally closed rim-forming chamber with the first annular rim-forming surface when the second member is in a first position relative to the first member, the second member being reciprocable to a second position in which the first annular surface and the second annular surface are separated to permit the withdrawal of a container with a rolled rim at the mouth from the first member. The device further includes a transfer mechanism for inserting a container with an unrimmed mouth over a frustoconical portion of the first member to position such container to have a rim rolled in the mouth thereof in such rim-forming chamber and to withdraw a container with a rolled rim at the mouth from the first member. The rim-forming chamber is heated and there need be no relative rotation between the rim-forming chamber and the container during the forming of a rolled rim in the container.

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