| 摘要 |
<p>The strip has two support films provided with a longitudinal sealing set (22) such as complementary sealing bands, hook and loop bands, and self-adhesive bands. Each film has a longitudinal lower part (212) extending in an underlying manner to a longitudinal upper part (211) of the film. Inner faces (211a, 212a) of the upper and lower parts are made of materials having different melting temperatures. The melting temperature of the constitutive material of the inner face of the upper part is lower than the melting temperature of the constitutive material of the inner face of the lower part. An independent claim is also included for a sachet comprising an opening.</p> |
