Disclosed are a reclosable tape that can be manufactured easily and stably, exhibit excellent adhesion strength regardless of a material type of a sealant layer (innermost layer) of a base material film of a bag body and good formability of an engaging portion in manufacturing; and a packaging bag with...http://www.google.es/patents/US7736058?utm_source=gb-gplus-sharePatente US7736058 - Chuck tape and packaging bag with chuck tape
