Abstract: Disclosed is a low-temperature shrinkage multilayered film incorporating a gas barrier layer formed of a vinylidene chloride type resin. This film exhibits low-temperature shrinkage properties (shrinkage and shrink tension), low-temperature toughness, seal strength properties (seal resistance to oil, seal resistance to heat and drop-bag seal strength at low-temperatures), gas barrier property, transparency after heating, resistance to layer delamination, airtightness in clipped state and gloss invariably at high levels.

Abstract: A fluid transmitting polyolefin foam having a special open-cell cellular structure as compared with the conventional polyolefin foams having all cells closed is disclosed. Such a novel fluid transmitting polyolefin foam is produced by mixing a polyolefin with a polymer other than a polyolefin, said polyolefin and/or said polymer other than a polyolefin having a blowing agent incorporated therein and/or adhered thereto and subjecting the resulting mixture to extrusion moulding. The present fluid transmitting polyolefin foam has a wide variety of uses, for example, as a synthetic leather, synthetic filter cloth, separator of storage battery, synthetic paper, package, etc.

Abstract: A composition for shrinkable film which excels in heat-sealability, transparency, strength, and particularly low-temperature quick shrinking property and, therefore, suits production chiefly of packaging materials, a film made of the composition and a process for the manufacture of the film are disclosed. Specifically, the composition comprises one of the specific combinations of components (A), (B) and (C), i.e. the combinations of (A)+(B), (B)+(C) and (A)+(B)+(C), wherein (A) is non-rigid polyolefine resins such as ethylene vinyl acetate, (B) is an elastomer comprising a specific ethylene-.alpha.-olefin copolymer, and (C) is rigid polyolefin resins such as polypropylene.

Abstract: A composition for shrinkable film which excels in heat-sealability, transparency, strength, and particularly low-temperature quick shrinking property and, therefore, suits production chiefly of packaging materials, a film made of the composition and a process for the manufacture of the film are disclosed. Specifically, the composition comprises one of the specific combinations of components (A), (B) and (C), i.e. the combinations of (A)+(B), (B)+(C) and (A)+(B)+(C), wherein (A) is non-rigid polyolefine resins such as ethylene vinyl acetate, (B) is an elastomer comprising a specific ethylene-.alpha.-olefin copolymer, and (C) is rigid polyolefin resins such as polypropylene.

Abstract: A composition for shrinkable film which excels in heat-sealability, transparency, strength, and particularly low-temperature quick shrinking property and, therefore, suits production chiefly of packaging materials, a film made of the composition and a process for the manufacture of the film are disclosed. Specifically, the composition comprises one of the specific combinations of components (A), (B) and (C), i.e. the combinations of (A)+(B), (B)+(C) and (A)+(B)+(C), wherein (A) is non-rigid polyolefin resins such as ethylene vinyl acetate, (B) is an elastomer comprising a specific ethylene-.alpha.-olefin copolymer, and (C) is rigid polyolefin resins such as polypropylene.

Abstract: A composition for shrinkable film which excels in heat-sealability, transparency, strength, and particularly low-temperature quick shrinking property and, therefore, suits production chiefly of packaging materials, a film made of the composition and a process for the manufacture of the film are disclosed. Specifically, the composition comprises one of the specific combinations of components (A), (B) and (C), i.e. the combinations of (A)+(B), (B)+(C) and (A)+(B)+(C), wherein (A) is non-rigid polyolefine resins such as ethylene vinyl acetate, (B) is an elastomer comprising a specific ethylene-.alpha.-olefin copolymer, and (C) is rigid polyolefin resins such as polypropylene.

Abstract: A composition for shrinkable film which excels in heat-sealability, transparency, strength, and particularly low-temperature quick shrinking property and, therefore, suits production chiefly of packaging materials, a film made of the composition and a process for the manufacture of the film are disclosed. Specifically, the composition comprises one of the specific combinations of components (A), (B) and (C), i.e. the combinations of (A)+(B), (B)+(C) and (A)+(B)+(C), wherein (A) is non-rigid polyolefine resins such as ethylene vinyl acetate, (B) is an elastomer comprising a specific ethylene-.alpha.-olefin copolymer, and (C) is rigid polyolefin resins such as polypropylene.

Abstract: There are disclosed films for stretch wrapping which comprise an olefin polymer, preferably a specific ethylene-vinyl acetate copolymer (referred to as "EVA copolymer" hereinafter) and specific polyalkylene ether polyols and non-ionic surfactants of fatty acid and polyhydric alcohol ester derivatives and which have suitable orientation expressed by heat shrinkage and excellent elastic recovery, by which excellent mechanical strength, wrapping finish, optical characteristics and preservability of the goods, especially fresh foods are attained. Method for producing said films is also disclosed. These films are suitable also for wrapping by automatic wrapping machines.

Abstract: A novel tube or sheet-shaped fluid transmitting porous material containing as a substrate, a polyolefin. Such porous material can be readily produced by subjecting a mixture of a polyolefin, a specific secondary polymer and a decomposition type blowing agent to extrusion moulding. The present porous material has certain unique features in its structure characterized in that there are recurring communications between cell wall openings forming a passage through which a fluid can pass. This porous material has excellent gas and liquid transmitting properties as well as an excellent filtering property and, in addition, is superior in resistance to chemicals and also has mechanical strength. Therefore, the porous material according to this invention is widely applicable in agriculture and industry as well as in the fields of synthetic leather etc.