| 摘要 |
PURPOSE:To improve long-term preservation stability by using an adhesive polyolefine composition, an admixture of specified components in a specified ratio, as a sealing material. CONSTITUTION:As a sealing material an adhesive polyolefine composition is used in which at least two kinds of ingredients out of ingredients (a)-(d) shall be contained, and the blending percentages of respective ingredients in the composition are as follows: (a): 10 to 100 weight %, (b): 0 to 90 weight %, (c):0 to 90 weight % of a polymer weight and (d): 5 to 50 weight % of the total composition weight. Denatured polyolefine which is obtained by graft reaction of polyolefine and alkenil succinic acid or unsaturated compounds expressed in formula 1 is used as (a), undenatured polyolefine is used as (b), polymers which have lower tensile elastic modulus in a room temperature than that of denatured or undenatured polyolefine polymers, for example each kind of polyethylene, are used as (c) and powdered calcium carbonate is used as (d). |
