Abstract: A manufacturing method of a synthetic resin hollow body in which a molten resin is injected for an over-molding outside a hollow molding body made of a resin provided with a hollow body and at least an opening portion to form a resin sheathing body in an integrating manner with the hollow molding body. The method includes the step of injecting the molten resin for an over-molding under the state in which the hollow molding body is partially or wholly filled with a fluid substance. The manufacturing method of a synthetic resin hollow body is capable of suppressing resin cost and operation cost and can improve decorating property.

Abstract: The present invention relates to a resin composition having an easy-openable property which comprises an ethylene polymer composition (D) comprising 5 to 65 wt % of a propylene polymer (A), 1 to 35 wt % of an ethylene/?-olefin random copolymer (B) having a density of less than 895 kg/m3 and 10 to 85 wt % of an ethylene polymer (C) having a density of 895 kg/m3 and more (in a total amount of 100 wt %), and a film thereof. The resin composition having an easy-openable property is useful as lid materials especially for propylene polymer containers and provides excellent sealability and easy openability and further provides excellent heat resistance and oil resistance.

Abstract: To provide a flame-retardant resin composition exhibiting high flame retardance, and excellent char (shell) formation, moldability and mechanical properties, stably without variation. A flame-retardant resin composition comprising an olefin-type resin (A), a modified copolymer (B) obtained by modifying at least partially a copolymer comprising a C4 olefin and an ?,?-unsaturated dicarboxylic anhydride or a derivative thereof, by at least one method of the following (b-1) and (b-2), and an inorganic flame retardant (C): (b-1); modification with a compound having a hydroxyl group and/or a compound having an ether group; and (b-2); partial ionomerization with metal ions.

Abstract: A synthetic resin hollow body which includes a hollow molding body made of a resin, the hollow molding body capable of holding a liquid material, and a resin sheathing body formed outside the hollow molding body in an integrating manner with the hollow molding body, wherein the resin sheathing body is made of a highly transparent synthetic resin having a total ray transmittance of at least 80%. The synthetic resin hollow body can exhibit a satisfactory decorating property and a satisfactory recycle property and is hardly damaged. In addition, the product cost and operation cost can be suppressed.

Abstract: A gel-type polymer electrolyte, wherein said polymer comprises (A) an ethylene-unsaturated carboxylic acid copolymer or a derivative thereof and (B) a polyalkylene oxide having a hydroxyl group at one terminal thereof or a derivative thereof, which are bonded together by an ester bond. The gel-type polymer electrolyte has a high ionic conductivity, and makes it possible to provides a cell which has excellent charge/discharge characteristics at low temperatures as well as at high temperatures.

Abstract: An encapsulating material for solar cell containing a laminated adhesive and heat resistant layer (A) and a buffering layer (B), wherein a difference in flexural modulus between the heat resistant layer (A) and the buffering layer (B) is at least 30 MPa or more, is provided. The adhesive and heat resistant layer (A) is preferably an olefin polymer (a) having a melting point (according to JIS K7121) of 75° C. or higher and having a storage elastic modulus at 150° C. of 103 Pa or more and the buffering layer (B) is preferably an olefin polymer (d) having a stiffness of 100 MPa or less. The encapsulating material for solar cell can provide superior transparency, flexibility, heat resistance and adhesiveness and can remarkably improve production efficiency of a solar cell module even when no organic peroxide is used. The encapsulating material can also exhibit a performance capable of corresponding to the thickness reduction of the solar cell element even when an organic peroxide is used.

Abstract: The present invention provides olefin polymer compositions that provide an easy-peelable sealant showing low temperature dependence of heat-sealing strength, excellent low-temperature sealability, sealing properties and appearance of the peeling section when used with polypropylene. In particular, the present invention includes as a composition having excellent heat and oil resistance a composition comprising in a particular proportion a propylene-based polymer (A), ethylene-based polymer (B) having a density of not less than 900 kg/m3, a non-crystalline or low-crystalline ethylene/?-olefin copolymer (C) and a tackifier resin (D), and as a composition having excellent oil resistance a composition comprising in a particular proportion an ethylene/unsaturated ester copolymer (E), a propylene-based polymer (A), a non-crystalline or low-crystalline ethylene/?-olefin copolymer (C) and a tackifier resin (D).

Abstract: The present invention relates to a thermoplastic resin composition comprising (A) ionomer of ethylene/(meth)acrylic acid copolymer 60 to 96.7% by weight, (B) ethylene or alpha-olefin/glycidyl monomer copolymer 0.3 to 10% by weight and (C) propylene/alpha-olefin copolymer 3 to 30% by weight. The resin composition has excellent processability, workability, visual qualities, abrasion resistance, scratch resistance, surface hardness, stain resistance, heat resistance, etc, and is usable for building materials such as handrails, flooring materials and wall papers; car interior-exterior parts, toys, stationery, sundries, etc.

Abstract: An encapsulation material for a solar cell element containing an ethylene-polar monomer copolymer having polar monomer unit content of 10-40 wt % and melting point of not lower than 75° C. and HAZE of not more than 10% and meeting the condition of ?3.0X+125?T??3.0X+109, wherein T is melting (° C.) and X is polar monomer unit content (mol %). The encapsulation material for a solar cell element does not require the use of any organic peroxide, consequently bringing about an improvement in the efficiency in the production of solar cell modules. The encapsulation material can also exhibit excellent transparency, heat resistance and flexibility as will make a reduction in the thickness of solar cell elements adequately possible. A solar cell module using the encapsulation material is also provided.

Abstract: The present invention relates to a resin composition superior in antistatic properties, processability and compatibility comprising 5 to 50 parts by weight of a potassium ionomer (A) of an ethylene-unsaturated carboxylic acid copolymer, 0.5 to 20 parts by weight of an ethylene-unsaturated ester copolymer (B) and 94.5 to 30 parts by weight of another thermoplastic resin (C) such as highly crystalline polyolefin type resin, and a single layer article or a multi-layer article having at least one layer of the resin composition. The resin composition and the multi-layer article are especially useful for a packaging material such as film, sheet and container.

Abstract: A partially cross-linked polymer composition obtainable by dynamically heat-treating: 95 to 50% by weight of a resin (A) comprising a defined ethylene copolymer, and 5 to 50% by weight of a resin (B) comprising a two or more-component propylene copolymer containing 0.1 to 20% by mol of units derived from ?-olefins other than propylene, or a blend of the two or more-component propylene copolymer and a propylene homopolymer which can be in the presence of defined amount of an organic peroxide (C) based on 100 parts by weight of the total amount of the resins (A) and (B). A process for producing the polymer compositions is also provided.

Abstract: A partially cross-linked polymer composition obtainable by dynamically heat-treating: 95 to 50% by weight of a resin (A) comprising an ethylene copolymer containing 5 to 48% by weight of units derived from at least one monomer selected from vinyl acetate, (meth)acrylic acid, (meth)acrylate ester, glycidyl (meth)acrylate and carbon monoxide, and 5 to 50% by weight of a resin (B) having a melt viscosity (JAI 7-1991) at 180° C. of over 10,000 mPa·Es and comprising a two or more-component propylene copolymer containing 0.1 to 20% by mol of units derived from ?-olefins other than propylene, or a blend of the two or more-component propylene copolymer and a propylene homopolymer in the presence of an organic peroxide (C) in an amount of from 0.001 to 4 parts by weight based on 100 parts by weight of the total amount of the resins (A) and (B). A process for producing the polymer compositions is also provided.

Abstract: The present invention provides olefin polymer compositions that provide an easy-peelable sealant showing low temperature dependence of heat-sealing strength, excellent low-temperature sealability, sealing properties and appearance of the peeling section when used with polypropylene. In particular, the present invention includes as a composition having excellent heat and oil resistance a composition comprising in a particular proportion a propylene-based polymer (A), ethylene-based polymer (B) having a density of not less than 900 kg/m3, a non-crystalline or low-crystalline ethylene/?-olefin copolymer (C) and a tackifier resin (D), and as a composition having excellent oil resistance a composition comprising in a particular proportion an ethylene/unsaturated ester copolymer (E), a propylene-based polymer (A), a non-crystalline or low-crystalline ethylene/?-olefin copolymer (C) and a tackifier resin (D).

Abstract: Provided is a lactic acid-based resin composition that comprises a lactic acid-based resin (component (A)), and an ethylene-unsaturated carboxylic acid copolymer (component (B)) and/or an ethylene-unsaturated carboxylic acid copolymer ionomer (component (C)). The lactic acid-based resin composition has good physical properties in melt and can be efficiently formed into films and laminates through casting or extrusion lamination. The paper laminates obtained through extrusion lamination with the resin composition have good moisture barrier property, and have the advantages of good antibacterial ability, good biodegradability and low combustion heat. And the moldings obtained from the resin composition of the invention have a characteristic which is excellent in impact strength. Further, the films and sheets formed of the resin composition have good low-temperature heat-sealability and hot-tack sealability, and the resin composition well serves as a sealant.

Abstract: The present invention relates to a resin composition having an easy-openable property which comprises an ethylene polymer composition (D) comprising 5 to 65 wt % of a propylene polymer (A), 1 to 35 wt % of an ethylene/?-olefin random copolymer (B) having a density of less than 895 kg/m3 and 10 to 85 wt % of an ethylene polymer (C) having a density of 895 kg/m3 and more (in a total amount of 100 wt %), and a film thereof. The resin composition having an easy-openable property is useful as lid materials especially for propylene polymer containers and provides excellent sealability and easy openability and further provides excellent heat resistance and oil resistance.

Abstract: The present invention relates to a multi-layer structure constructed of two or more layers including a potassium ionomer layer (X) having a low surface resistivity and a layer (Y) comprising a polymer material having a high surface resistivity like LLDPE as a surface layer, where the static charge decay characteristics of the layer (Y) is improved. This type of two layer or three layer structure having the layer (X) as its intermediate layer or another surface layer gives good slip characteristics, abrasion resistance, and dust-free characteristics, and hence is useful for packaging materials, such as films, sheets and containers.

Abstract: Provided is a lactic acid-based resin composition that comprises a lactic acid-based resin (component (A)), and an ethylene-unsaturated carboxylic acid copolymer (component (B)) and/or an ethylene-unsaturated carboxylic acid copolymer ionomer (component (C)). The lactic acid-based resin composition has good physical properties in melt and can be efficiently formed into films and laminates through casting or extrusion lamination. The paper laminates obtained through extrusion lamination with the resin composition have good moisture barrier property, and have the advantages of good antibacterial ability, good biodegradability and low combustion heat. And the moldings obtained from the resin composition of the invention have a characteristic which is excellent in impact strength. Further, the films and sheets formed of the resin composition have good low-temperature heat-sealability and hot-tack sealability, and the resin composition well serves as a sealant.

Abstract: A film having a large tensile stress in the machine direction, excellent mechanical properties and stretch-wrapping property, and that is less broken at the time of wrapping, can be favorably torn off in the transverse direction, can be intimately adhered on the container walls to be wrapped, and excellently restores its shape after it is depressed and deformed as a result of wrapping. The film for stretch-wrapping is formed of a resin composition containing, as a chief component, an ethylene/(meth)acrylic acid/(meth)acrylic acid ester terpolymer that contains not more than 7% by weight of a (meth)acrylic acid ester unit, and, optionally, containing an anti-fogging agent or a tackifier.

Abstract: A flame retardant resin composition comprising a mixture of:a) 10 to 70 parts by weight of an ethylene/(meth)acrylic ester copolymer;b) 30 to 90 parts by weight of a low crystalline ethylene/higher olefin copolymer;c) 0 to 30 parts by weight of an ethylene polymer selected from the group consisting of polyethylene and crystalline ethylene/.alpha.-olefin copolymers;d) 150 to 250 parts by weight, based on 100 parts by weight of the polymer components a), b) and c), of a metal hydroxide flame retardant; ande) 2 to 30 parts by weight of red phosphorus, anda flame retardant plastic optical fiber cable comprising a plastic optical fiber core and the above resin composition covering the plastic optical fiber core.

Abstract: The present invention is directed to a method for preparing cylindrical members for paper containers having a thermoplastic resin layer as the innermost layer by cylindrically forming a preform sheet made up of a laminate comprising at least a paper layer and the thermoplastic resin layer, the laminate is arranged so that the thermoplastic layer becomes the innermost layer of the paper containers and is selected from the group consisting of polyesters and ethylene/vinyl alcohol copolymers. The method includes the steps of folding the innermost layer along one edge of the preform sheet back over itself, irradiating the folded edge and another edge of the preform sheet both of which are made of the thermoplastic resin layer of polyesters or ethylene/vinyl alcohol copolymers using a carbon dioxide gas laser irradiation, thereby softening or melting the thermoplastic resin layer, overlapping the irradiated edges, and pressing the overlapped portion to seal the thermoplastic resin layers together.