Fastener tape

Abstract

This fastener tape includes a first belt-shaped member and a second belt-shaped member that are engageable with each other, the first and second belt-shaped members being constituted with a resin composition containing an ethylene-vinyl alcohol copolymer and an acid-modified polyolefin resin.

1 . A fastener tape comprised of first and second strip-like members that can be mutually engaged; wherein
 the first and second strip-like members are composed with a resin composition containing an ethylene-vinyl alcohol copolymer and an acid-modified polyolefin-based resin.   
     
     
         2 . The fastener tape according to  claim 1 , wherein the resin composition contains 65-95 mass % of an ethylene-vinyl alcohol copolymer and 5-35 mass % of an acid-modified polyolefin-based resin. 
     
     
         3 . The fastener tape according to  claim 1 , wherein the content of ethylene monomer unit in the ethylene-vinyl alcohol copolymer is 10-70 mol % based on the total number of moles of the ethylene monomer unit and vinyl alcohol monomer unit in the entire ethylene-vinyl alcohol copolymer. 
     
     
         4 . The fastener tape according to  claim 1 , wherein the melt mass flow rate of the resin composition as determined in compliance with JIS K7210-1 is 1.0 g/10 min or more under conditions of a temperature of 260° C. and load of 21.18 N. 
     
     
         5 . The fastener tape according to  claim 1 , wherein when the resin composition is molded into a film, cut to a size of 10 cm×10 cm, one surface is exposed for one week to L-menthol vapor in an environment at 40° C., the adsorbed L-menthol is extracted with methyl ethyl ketone, and the amount of L-menthol in the extract is quantified by gas chromatography, the adsorbed amount of L-menthol in the film is 0.7 mg or less. 
     
     
         6 . A packaging bag with fastener tape provided with:
 a packaging bag composed with a packaging bag film provided with a non-adsorbent layer, containing an ethylene-vinyl alcohol copolymer, for the innermost layer, and   the fastener tape according to  claim 1  fused to the non-adsorbent layer so that the first and second strip-like members are mutually opposing.   
     
     
         7 . A method for producing a packaging bag with fastener tape using:
 a fastener tape comprised of first and second strip-like members that can be mutually engaged, wherein the first and second strip-like members are composed with a resin composition containing an ethylene-vinyl alcohol copolymer and an acid-modified polyolefin-based resin, and   a packaging bag film provided with a non-adsorbent layer containing an ethylene-vinyl alcohol copolymer, the method including:   fusing the fastener tape to the non-adsorbent layer, and   fusing the ends of the non-adsorbent layer by mutually opposing to form a bag such that the first and second strip-like members of the fastener tape are mutually opposing; wherein,
 when forming a bag by fusing the ends of the non-adsorbent layer by mutually opposing, at least a portion of the fastener tape is integrally fused and collapsed together with the ends of the non-adsorbent layer between the mutually opposing ends of the non-adsorbent layer.