B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 57/10 (2006.01) B29C 65/00 (2006.01) B29C 65/10 (2006.01) B29C 65/78 (2006.01) B65B 7/28 (2006.01) B65B 51/10 (2006.01)
Patent
CA 2116770
2116770 9304845 PCTABS00020 The invention provides a method for manufacturing a container filled with a product (11), and comprising a substantially tubular body portion (10) of thin-walled plastic or laminated plastic material and a butt-weldable end-piece (13) at each end of the body portion. A first end-piece is fitted to one end of the body portion and the product (11) is introduced into the container via the open end of the body portion. A second end-piece (13) having a transverse wall (15) of diameter slightly less than the diameter of the tubular body portion (10) is then introduced into the said open body portion end to an intermediate position where it partially projects into the body portion (10). The plastic material of the body portion end region and the second end-piece is softened through application of heat energy. The method is characterized in that the end-piece (13) is contacted by an abutment member (18) of lesser diameter than the transverse wall (15) and, by means of relative displacement between it and the body portion (10), the end-piece is pressed in to the body portion to its terminal position whilst a cooling medium is supplied to the abutment member (18) for preventing the abutment member from adhering to the transverse wall (15) and which cooling medium does not directly act on said transverse wall. The invention also provides an apparatus for carrying out the above method.
Marks & Clerk
Norden Pac Development Ab
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