| 摘要 |
<p>PURPOSE:To prevent the content of a container from deteriorating due to an adhesive by a method wherein a heat-sealable resin with the same base as the innermost surface of the container is co-extruded on both sides of the central resin layer of a tape material which is affixed so as to cover the paper end surface, and then, a biaxial drawing is performed. CONSTITUTION:For a tape material 1, on both side of a central layer 11, a resin layer 12 with heat-sealability, of which the base is the same as the innermost surface of a paper container for liquid, is provided by a bondable resin layer 13 when necessary. The tape material 1 has a layer constitution and is formed by a 2 kind 3 layer or 3 kind 5 layer co-extrusion, and then, biaxially drawn by 2-6 times in the longitudinal direction and 2-6 times in the lateral direction. This tape material 1 is affixed on the internal surface of a paper joined part of the pair container for liquid in such a manner that the tape material 1 may cover the paper end part, and the paper joined part is bonded. By this method the melting out of an adhesive component of a low molar weight from the end surface adhesive layer of the tape material 1 being in contact with a content, and the deterioration of the content by the transfer of the adhesive odor due to a residual solvent can be prevented from generating.</p> |
