Molded article and method for producing molded article
AssigneeMitsubishi Chemical Corporation
InventorsYuya KANAMORI, Norihito SAKAI
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Abstract
As a molded article that has gas barrier properties even if a gas barrier layer is not provided and that also has molding stability and biodegradability, there is proposed a molded article containing an aliphatic polyester-based resin (A) and a polyvinyl alcohol-based resin (B) as main component resins, wherein the molded article has a resin phase-separated structure having a continuous phase including the aliphatic polyester-based resin (A) as a main component, and a ribbon-like dispersed phase including the polyvinyl alcohol-based resin (B) as a main component.
Claims20
A molded article comprising a resin layer containing an aliphatic polyester-based resin (A) and a polyvinyl alcohol-based resin (B) as main component resins, wherein
- the resin layer has a resin phase-separated structure having a continuous phase comprising the aliphatic polyester-based resin (A) as a main component, and a ribbon-like dispersed phase comprising the polyvinyl alcohol-based resin (B) as a main component.
A molded article comprising a resin layer obtained by dry-blending and molding pellets (A1) comprising an aliphatic polyester-based resin (A) as a main component, and pellets (B1) comprising a polyvinyl alcohol-based resin (B) as a main component, wherein
- an absolute value of a difference between a melt viscosity of the aliphatic polyester-based resin (A) at 210° C. (ηA) and a melt viscosity of the polyvinyl alcohol-based resin (B) at 210° C. (ηB) (|ηA−ηB|) is 100 Pa·m or more.
A method for producing a molded article, comprising dry-blending and injection-molding pellets (A1) comprising an aliphatic polyester-based resin (A) as a main component, and pellets (B1) comprising a polyvinyl alcohol-based resin (B) as a main component.
A method for producing a molded article, comprising dry-blending and sheet-molding pellets (A1) comprising an aliphatic polyester-based resin (A) as a main component, and pellets (B1) comprising a polyvinyl alcohol-based resin (B) as a main component, and then stretching a sheet obtained by the sheet molding in one axial direction or two axial directions.
Dependencies are inferred from the claim text.