Packaged molded article, crosslinking rubber composition, method for producing packaged molded article, method for producing crosslinking rubber composition, and tread for tire
AssigneeAsahi Kasei Kabushiki Kaisha
InventorsAtsushi Yasumoto, Tsuneaki Konomoto, Hideki Yamasaki, Yoshifumi Araki
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Abstract
A packaged molded article containing: a molded article of a rubber-like polymer having a weight average molecular weight of 100,000 or more, and a packaging film packaging the molded article, wherein a portion facing the molded article, of the packaging film, satisfies the following conditions (1) and (2): <Condition (1)> the portion has 50 or more openings; <Condition (2)> a total area ratio of the openings is 0.1% or more and 15% or less with respect to a total area of the portion facing the molded article.
Claims17
A packaged molded article comprising
- a molded article of a rubber-like polymer having a weight average molecular weight of 100,000 or more, and
- a packaging film packaging the molded article,
- wherein
- a portion facing the molded article, of the packaging film, satisfies the following conditions (1) and (2):
- <Condition (1)> the portion comprises 50 or more openings;
- <Condition (2)> a total area ratio of the openings is 0.1% or more and 15% or less with respect to a total area of the portion facing the molded article.
A packaged molded article comprising
- a molded article of a rubber-like polymer having a weight average molecular weight of 100,000 or more, and
- a packaging film packaging the molded article,
- wherein
- a portion facing the molded article, of the packaging film, comprises openings, and a total area ratio of the openings is 0.1% or more and 15% or less with respect to a total area of the portion facing the molded article, and
- an area ratio of a portion not having any openings of 1 mm2 or more per 10,000 mm2 of the packaging film is 70% or less with respect to a total area of the portion facing the molded article.
A method for producing a packaged molded article, comprising
- a step of polymerizing a monomer in a solution to obtain a solution comprising a rubber-like polymer having a weight average molecular weight of 100,000 or more,
- a step of removing a solvent from the solution comprising the rubber-like polymer,
- a step of molding the rubber-like polymer to obtain a molded article, and
- a step of covering the molded article with a packaging film, wherein
- a portion facing the molded article, of the packaging film, satisfies the following conditions (1) and (2):
- <Condition (1)> the portion comprises 50 or more openings,
- <Condition (2)> a total area ratio of the openings is 0.1% or more and 15% or less with respect to a total area of the portion facing the molded article.
Dependencies are inferred from the claim text.