| 摘要 |
A heat sealing process comprises the step of applying an aqueous solution to a least one of the surfaces of a water soluble film and member and subsequently heat sealing the two together. The aqueous solution may be water. This process may be used to form a container based on the film and member which may hold substances such as dishwasher / fabric / surface care or the like compositions and may release such into a dishwashing / washing machine on contact with water as the container dissolves. Suitable materials for the film and member are such as PVA, with a water content of less than 5 wt%. |
