METHOD OF JOINING SHEETS OF A NON-MAGNETIC MATERIAL TOGETHER

摘要

A method and apparatus for joining two sheets of a plastics material together along a join line are disclosed. In terms of the method, the sheets are located in a zone between a magnet (28) and a body (12) which is attracted to the magnet (28) to bring the sheets together. The sheets are caused to be moved through the zone and are joined together in the zone or immediately after they have passed through the zone. The sheets are joined to each other by heat welding using a heat source (32) such as an infra-red light (32) which does not physically contact the sheets. The apparatus includes the magnet (28) and body (12), and the heat source (32).