IMPROVEMENTS IN OR RELATING TO METHODS OF PREPARING WEB MATERIAL FOR PRODUCTION OF RECEPTACLES FOR FOOD OR OTHER PRODUCTS

摘要

The disclosure relates to a method of preparing a web of flexible materia l for production of receptacles for packaging. The method comprises the step s of feeding a web of flexible material (30) past a succession of stations i n which operations are carried out on the web including defining blanks for receptacles having walls and tabs by creating fold lines (34,35) in the web, and then laminating (41,42) a film of heat-sealable plastics materials (40) to a face of the web of the flexible material. The film of heat-sealable pl astics provides a heat-sealable surface on the web for bonding tabs of each blank together to form seams between adjacent walls whereby the blanks, when severed from the web, can be erected to form receptacles having openings to receive items to be packaged.