Method of providing a seal between can end plate and can barrel

Details Method of providing a seal between can end plate and can barrel Method of providing a seal between can end plate and can barrel

B - Operations, Transporting

65

B

226/106

B65B 7/28 (2006.01) B29C 65/02 (2006.01) C09K 3/10 (2006.01)

Patent

CA 1179655

ABSTRACT OF THE DISCLOSURE method of providing a seal between the barrel portion and the end plate of a can. The method comprises the steps of; preparing a can end plate resembling a press-to-fit type lid and lined on its inner side with a layer of a heat-fusible plastics material, the can end plate having around its periphery an annular groove of inverted U-shaped cross-section; fitting the can end plate to the upper end of the can barrel, so that the outer wall of the annular groove is curled a plurality of times into the inner side, pressing the curled end portion against the end edge wall of the can barrel, to form a swelling portion in the upper end edge of the can barrel, clamping the curled end portion with the swelling portion; and applying heat to the junction between the upper end edge of the can barrel including the swelling portion and the can end plate so as to fuse the plastics material to form a tight seal between the can barrel and the can end plate.

393488

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