Importance

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Abstract

A press-through packaging or blister package having excellent moisture-proofness, transparency, and superior processibility by vacuum or pneumatic forming, comprising of a formed product having blisters thereon prepared by forming a sheet or film of a non-stretched layer made from one or more non-crystalline polyolefin resins selected from the group consisting of a cycloolefin random copolymer obtained from a non-ring-opening polymerization of ethylene and a cycloolefin having a molecular structure represented by the general formula (1), with an intrinsic viscosity (.eta.) of 0.01-100 dl/g determined in decalin at 135.degree. C. and a softening temperature (TMA) of 50.degree.-200.degree. C., and a graft-modified product of said cycloolefin random copolymer, ##STR1## in which n is zero or 1, m is zero or any positive integer, q is zero or 1, R.sup.1 -R.sup.18 as well as R.sup.a and R.sup.b represent each independently with each other an atom or a radical selected from the group consisting of hydrogen atom, halogen atoms and hydrocarbon groups, wherein R.sup.15 -R.sup.18 may form a monocyclic ring or a polycyclic ring by combining with each other or may form an alkylidene group by a chemical combination of R.sup.15 with R.sup.16 or R.sup.17 with R.sup.18 and wherein the monocyclic or polycyclic ring formed from R.sup.15 -R.sup.18 may have one or more double bonds and, in the case of q=0, a five-membered ring is formed there by combining each of the chemical bonds.

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First Claim