| 摘要 |
PROBLEM TO BE SOLVED: To incorporate excellent low temperature heat sealability, low temperature hot sealing and high speed filling packaging suitability and to provide no liquid-leakage of a content by sequentially laminating a base material film, a barrier layer, a pressure resistant strength layer and a heat sealable resin layer. SOLUTION: As the laminating material A, at least a base material film 1, a barrier layer 2, a pressure resistant strength layer 3 and a heat sealable resin layer 4 are fundamentally sequentially laminated, and laminating auxiliary material layers are provided between the respective layers as needed. In the case of forming lateral sealing parts corresponding to an upper side and a bottom side of the doubled laminating material A by a pair of rolls for lateral sealing, at least occurrence of a resin reservoir or the like is not recognized. Then, thinning of a thickness of the sealed part is not recognized as well. Excellent low temperature sealability, low temperature hot sealability or the like, high speed filling packaging suitability are incorporated. Further, excellent biting heat sealablility or the like through a content or the like, sufficient sealing strength are incorporated. No liquid leakage of a content and excellent storage stability are provided.
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