Valve a heat-sealable advanced disposable or soluble in water, for paper bags advanced disposable

摘要

The valve has a tubular unit (5) integrated with a paper bag (1) using a glue soluble or disintegrable in water. The tubular unit has a sleeve (7) made up of paper soluble in water, where the sleeve has an inner surface covered with a film made up of plastic material soluble in water, using the glue soluble in the water. A temporary protection paper is placed inside the unit. An independent claim is also included for a paper bag soluble in water equipped with a heat-sealable valve.