Backventil för luftfyllbara produkter som exempelvis luftmadrasser, klädesgalgar och ballonger

摘要

The present invention relates to a non-return valve (2, 3, 7) produced in one and the same operation in conjuction with the joint (5) around an air-containing product, such as an air mattress (4), to provide the valve function when the product is inflated.