Fastener and packaging bag with fastener

Abstract

This packaging bag with a fastener is one which is produced by fusing a fastener including a male member and a female member being engageable with each other, a joining portion whereby an end of a non-opening side flange portion of the male member is joined with an end of a non-opening side flange portion of the female member, and a ridge portion formed between the joining portion and the flange portion, in which the joining portion has a thickness ranging from not less than 10 μm to not more than 100 μm, the ridge portion has a thickness ranging from not less than 200 μm to not more than 2 mm, the joining portion is thinner than the flange portion, and the ridge portion is thicker than the flange portion, to a bag to form a packaging bag.

1 . A fastener comprising a male member and a female member being engageable with each other, a joining portion whereby an end of a non-opening side flange portion of the male member is joined with an end of a non-opening side flange portion of the female member, and a ridge portion formed between the joining portion and the flange portion, wherein the joining portion has a thickness ranging from not less than 10 μm to not more than 100 μm, the ridge portion has a thickness ranging from not less than 200 μM to not more man 2 mm, the joining portion is thinner than the flange portion, and the ridge portion is thicker than the flange portion. 
     
     
         2 . A packaging bag with a fastener, produced by fusing the fastener as set forth in  claim 1  to a bag to form a packaging bag.