Abstract: A multilayer polyester film is characterized in that a polyester (B) layer mainly composed of a polyester (B) is arranged on at least one side of a polyester (A) layer mainly composed of a polyester (A). The multilayer polyester film is also characterized by having an elastic modulus of 20 to 1000 MPa in an atmosphere at 23° C. and an elastic modulus of 10 to 200 MPa in an atmosphere at 120° C., and having substantially no-orientation.

Abstract: The invention provides a porous film including a polylactic acid based resin (A), a thermoplastic resin (B) that is not a polylactic acid based resin, and a filler (C), wherein resin (A) and resin (B) account for 10 to 95 mass % and 5 to 90 mass %, respectively, of the sum total 100 mass % of resin (A) and resin (B), while the filler (C) accounts for 1 to 400 parts by mass of the sum total 100 parts by mass of resin (A) and resin (B), with the porosity being 1 to 80%. The present invention provides a polylactic acid based porous film that has high flexibility, moisture permeability, heat resistance, and bleed-out resistance.

Abstract: The laminate sheet of polylactic acid-based resin of the present invention is a laminate sheet comprising Layer A and Layer B consisting of polylactic acid-based resin composition and both of said Layer A and said Layer B contain a nucleating agent, and said Layer A and said Layer B contain said nucleating agent in a specific amount. The present invention makes it possible to obtain a thermoformed plastic excellent in heat resistance and transparency, and further, provides a laminate sheet of polylactic acid-based resin excellent in thermoformability.

Abstract: Provided is a polymer prepared by using a vegetable oil-derived component and favorably used as a polylactic acid resin-softening agent that is effective in softening the polylactic acid resin while preserving the transparency of the polylactic acid resin and simultaneously resistant to bleeding out (extraction) of itself from the polylactic acid resin. Also provided are a resin mixture of the resin composition and a polylactic acid resin as well as a film or sheet prepared by using the resin mixture. The polymer (C) according to the present invention has an epoxidized vegetable oil segment (A) and a polylactic acid segment (B). The resin mixture according to the present invention is a mixture of the polymer (C) and the polylactic acid resin (D) at a (C)/(D) ratio of 10/90 to 50/50 (weight ratio).

Abstract: A vapor deposition film has a vapor deposition layer composed of a metal or an inorganic oxide formed on at least one side of a resin layer (A) which is composed of a resin composition (1). The resin composition (1) is a polyglycol acid containing not less than 70% by mole of a specific structure (a structure represented by formula (1)) as a repeating unit. The surface on which the vapor deposition layer is deposited has a center line average roughness of 5-50 nm. The vapor deposition film has excellent gas barrier properties, excellent workability and decomposition resistance sufficient for practical use.

Abstract: A multilayer polyester film is characterized in that a polyester (B) layer mainly composed of a polyester (B) is arranged on at least one side of a polyester (A) layer mainly composed of a polyester (A). The multilayer polyester film is also characterized by having an elastic modulus of 20 to 1000 MPa in an atmosphere at 23° C. and an elastic modulus of 10 to 200 MPa in an atmosphere at 120° C., and having substantially no-orientation.

Abstract: The polylactic acid-based resin laminate sheet is a laminate sheet including Layer A and Layer B of a polylactic acid-based resin composition, and the Layer A and the Layer B contain poly(meth)acrylate in a specified amount. The laminate sheet is excellent in transparency and heat resistance and, in addition, provides a polylactic acid-based resin laminate sheet capable of obtaining a molded product of high biobased content therefrom.

Abstract: Provided is a polymer prepared by using a vegetable oil-derived component and favorably used as a polylactic acid resin-softening agent that is effective in softening the polylactic acid resin while preserving the transparency of the polylactic acid resin and simultaneously resistant to bleeding out (extraction) of itself from the polylactic acid resin. Also provided are a resin mixture of the resin composition and a polylactic acid resin as well as a film or sheet prepared by using the resin mixture. The polymer (C) according to the present invention has an epoxidized vegetable oil segment (A) and a polylactic acid segment (B). The resin mixture according to the present invention is a mixture of the polymer (C) and the polylactic acid resin (D) at a (C)/(D) ratio of 10/90 to 50/50 (weight ratio).

Abstract: Poly(lactic acid) polymer compositions each contain an appropriate poly(lactic acid) polymer and a suitable plasticizer having a polyether and/or polyester segment in combination. The compositions exhibit satisfactory flexibility and show very small amount of the evaporation, migration and extraction (bleedout) of the plasticizer and losing transparency upon heating. The poly(lactic acid) polymer compositions are useful as formed plastics such as films.

Abstract: The polylactic acid-based resin laminate sheet is a laminate sheet including Layer A and Layer B of a polylactic acid-based resin composition, and the Layer A and the Layer B contain poly(meth)acrylate in a specified amount. The laminate sheet is excellent in transparency and heat resistance and, in addition, provides a polylactic acid-based resin laminate sheet capable of obtaining a molded product of high biobased content therefrom.

Abstract: The laminate sheet of polylactic acid-based resin of the present invention is a laminate sheet comprising Layer A and Layer B consisting of polylactic acid-based resin composition and both of said Layer A and said Layer B contain a nucleating agent, and said Layer A and said Layer B contain said nucleating agent in a specific amount. The present invention makes it possible to obtain a thermoformed plastic excellent in heat resistance and transparency, and further, provides a laminate sheet of polylactic acid-based resin excellent in thermoformability.

Abstract: Poly(lactic acid) polymer compositions each contain an appropriate poly(lactic acid) polymer and a suitable plasticizer having a polyether and/or polyester segment in combination. The compositions exhibit satisfactory flexibility and show very small amount of the evaporation, migration and extraction (bleedout) of the plasticizer and losing transparency upon heating. The poly(lactic acid) polymer compositions are useful as formed plastics such as films.

Abstract: Poly(lactic acid) polymer compositions each contain an appropriate poly(lactic acid) polymer and a suitable plasticizer having a polyether and/or polyester segment in combination. The composition exhibit satisfactory flexibility and show very small amount of the evaporation, migration and extraction (bleedout) of the plasticizer and losing transparency upon heating. The poly(lactic acid) polymer compositions are useful as formed plastics such as films.

Abstract: Poly(lactic acid) polymer compositions of the invention each contain an appropriate poly(lactic acid) polymer and a suitable plasticizer having a polyether and/or polyester segment in combination, exhibit satisfactory flexibility and show very small amount of the evaporation, migration and extraction (bleedout) of the plasticizer and losing transparency upon heating. The poly(lactic acid) polymer compositions of the invention are useful as formed plastics such as films.

Abstract: Disclosed is a biodegradable oriented film of a plasticizer-containing biodegradable resin, of which the both surfaces are coated with at least one thin layer and of which the loop stiffness change (&Dgr;R) after heat treatment at 130° C. for 30 minutes is at most 20%. This is favorable for wrapping films.