B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
154/140, 400/657
B29D 22/00 (2006.01)
Patent
CA 1293575
- 43 - Abstract Disclosed herein is a polypropylene sheet obtained by forming a resin composition, which contains a polypropylene resin and a hydrogenated petroleum resin in specific amounts, into a sheet at a particular chill-roll temperature and then annealing the sheet at a specific temperature for a specific period of time as well as an improved production process of such a polypropylene sheet. Also disclosed is a polypropylene sheet comprising a sheet obtained from the above resin composition and a polypropylene layer of at least 10 µm thick applied on at least one side of the sheet. A polypropylene resin composition suitable for the production of such polypropylene sheets is also disclosed. The above polypropylene sheets are suitable for use in press-through packages.
516558
Kanezaki Kazuharu
Sentoku Hajime
Takahashi Takashi
Ueki Toru
Usami Katsuyuki
Mitsui Chemicals Inc.
Sim & Mcburney
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