Fastener Chain with Separable Bottom End Stop and Method for Producing the Same

Abstract

There are provided arc a fastener chain with a separable bottom end stop capable of increasing the reinforcement force of a portion to which the separable bottom end stop is attached—without using a reinforcing tape and keeping aesthetic appearance, and a method for producing the fastener chain. The fastener chain includes reinforced portions into which a curing adhesive has penetrated and cured, and has a misalignment-free strength of 100 N or more at the reinforced portion. The method for producing a fastener chain includes preparing a fastener chain including a plurality of element intermittent portions, attaching separable bottom end stop to each of the element intermittent portions, impregnating each of the element intermittent portions with a curable curing adhesive having a viscosity of 100 to 2,000 mPa S and a curing the curing adhesive which has penetrated into the element intermittent portions.

1 . A fastener chain with a separable bottom end stop comprising:
 a pair of fastener tapes;   rows of fastener elements attached to both edges of the fastener tapes which face each other;   a separable bottom end stop attached to ends of the fastener tapes and contacted with the rows of elements;   a reinforced portion provided on at least portions of the fastener tapes to which the separable bottom end stop is attached, the reinforced portion into which a curing adhesive has penetrated and cured; and   wherein the reinforced portion has a misalignment-free strength of 100 N or more.   
     
     
         2 . The fastener chain with the separable bottom end stop according to  claim 1 , wherein the curing adhesive has a viscosity of 100 to 2000 mPa·S when penetrating into the fastener tapes. 
     
     
         3 . The fastener chain with the separable bottom end stop according to  claim 1 , wherein the curing adhesive comprises a two-component curing adhesive. 
     
     
         4 . The fastener chain with the separable bottom end stop according to  claim 1 , wherein a weight of the curing adhesive remaining in the reinforced portions is 50 to 300 g (dry weight) per 1 m 2  of a fastener tape. 
     
     
         5 . A method for producing a fastener chain with a separable bottom end stop comprising:
 a process A for preparing a fastener chain including a plurality of element intermittent portions;   a process B for attaching a separable bottom end stop to each of the element intermittent portions;   a process C for impregnating each of the element intermittent portions with a curing adhesive before or after the process B; and   a process D for curing the curing adhesive that has penetrated into the element intermittent portions by the process C.   
     
     
         6 . The method for producing the fastener chain with the separable bottom end stop according to  claim 5 , wherein the curing adhesive has a viscosity of 100 to 2000 mPa·S at the process C. 
     
     
         7 . The method for producing the fastener chain with the separable bottom end stop according to  claim 5 , wherein the process C is performed while the fastener chain is masked with a masking member that is sequentially provided from a direction intersecting with a conveying direction where the fastener chain is continuously conveyed. 
     
     
         8 . The method for producing the fastener chain with the separable bottom end stop according to  claim 7 ,
 wherein the masking member has a polygonal or circular cylinder shape, has a central axis as a rotational axis and sequentially rotates at regular time intervals, the masking member having an opening at side face thereof,   and wherein, in the process C, the fastener chain is conveyed in a direction from one bottom surface of the member to another bottom surface of the member such that the element intermittent portions pass through an inside of the side surface, and a masking is performed by providing the adhesive from an outside toward the opening formed at the side surface when the element intermittent portions pass through the side surface.   
     
     
         9 . The method for producing the fastener chain with a separable bottom end stop according to  claim 8 , wherein the masking member rotates every time when each of the element intermittent portions is conveyed with the conveyance of the fastener chain such that the masking is performed sequentially using different openings. 
     
     
         10 . The method for producing the fastener chain with the separable bottom end stop according to  claim 8 , wherein the adhesive attached to a periphery of the opening is removed from each of the openings of the masking member during a time between a completion of a masking and a next masking. 
     
     
         11 . The method for producing the fastener chain with the separable bottom end stop according to  claim 7 ,
 wherein the masking member comprises a masking tape for masking which includes an opening and which is sequentially paid out by a wind off and on device which comprises a wind off unit and a wind on unit,   and wherein, in the process C, the fastener chain is conveyed such that the element intermittent portions pass under the masking tape which moves between the wind off unit and the wind on unit.   
     
     
         12 . The method for producing the fastener chain with the separable bottom end stop according to  claim 7 , wherein the curing adhesive comprises a two-component curing adhesive. 
     
     
         13 . The method for producing the fastener chain with the separable bottom end stop according to  claim 5 , wherein the process C is performed on the fastener chain that has been heated in advance. 
     
     
         14 . The method for producing the fastener chain with the separable bottom end stop according to  claim 5 , wherein the fastener chain is hot pressed after the process C. 
     
     
         15 . The method for producing the fastener chain with the separable bottom end stop according to  claim 5 , wherein the weight of the curing adhesive penetrating into the element intermittent portions is 50 to 300 g (dry weight) per 1 m 2  of a fastener tape.