| 摘要 |
PURPOSE:To obtain an inner seal material which provides a stable, good separability despite high frequency heating applied thereto and lends itself to high frequency sealing. CONSTITUTION:An inner sealing material consists of a membrane layer 15 having at least a moisture proofing material layer 12 and a resealing layer 14 having at least an elastic sheet layer 3 and the membrane layer 15 and the resealing layer 14 are separably laminated together. The uppermost layer of the membrane layer 15 has an adhesive layer 10 consisting of chlorinated polypropylene resin formed on a separating layer 9 consisting of a mixture of acrylic resin and chlorinated vinyl acetate resin and the lowermost layer of the resealing layer 14 is a polypropylene resin layer 8. |
