A multilayer, oriented shrink film includes a core layer, skin layers on opposed sides of the core layer, and an interlayer between each skin layer and the core layer for bonding each skin layer to the core layer. The core layer comprises a polypropylene terpolymer, at least one polybutene-1 copolymer and at least one polypropylene elastomeric copolymer including ethylene. At least one skin layer comprises at least one amorphous glycol-modified polyethylene terephthalate. At least one interlayer includes a polypropylene terpolymer and an ethylene copolymer with vinyl acetate or methyl acrylate. The shrink film has a shrinkage of greater than 50% at 95° C. in one of the machine direction and transverse direction of film formation and has a density below 1.0 g/cm3.

A shrink film may include at least one layer comprising a blended ethylene-based polymer composition, the blended ethylene-based having a PCR content varying from greater than 5 to less than 95 wt % and a virgin resin content varying from greater than 5 to less than 95 wt %, wherein the virgin resin is selected from HOPE, LLDPE, LDPE, or combinations thereof.

An object of the present invention is to provide a composition capable of allowing for production of a crosslinked foamed product suitable for applications of footwear parts such as soles and excellent in properties such as lightweight properties, heat shrinkability, compression set and mechanical strength in a well-balanced manner, a foamed product using the composition and a footwear part using the same. An ethylene copolymer composition including an ethylene copolymer (A) satisfying all the following requirements (A-a), (A-b), (A-c) and (A-d), ethylene/α-olefin having 3 to 20 carbon atoms/non-conjugated polyene copolymer rubber (B), and, if necessary, an ethylene/polar monomer copolymer (C); (A-a) a vinyl group content per 1,000 carbon atoms is 0.025 to 0.3, (A-b) MFR.sub.10/MFR.sub.2.16 is 7 to 20, (A-c) a density is 0.850 to 0.910 g/cm.sup.3, and (A-d) a melt flow rate is 0.01 to 200 g/10 min.

A polyolefin microporous film having a laminated structure provided with at least one layer A containing a polyolefin and at least one layer B containing a polyolefin. 0 mass % to less than 3 mass % of polypropylene is contained in layer A and 1 mass % to less than 30 mass % of polypropylene is contained in layer B. When the proportion of polypropylene contained in layer A is represented by PPA (mass %) and the proportion of polypropylene contained in layer B is represented by PPB (mass %), PPB>PPA. In the polyolefin microporous film, the heat shrinkage ratio in TD at 120° C. measured upon applying, in MD, a constant load determined on the basis of the relationship: load (gf)=0.01×piercing strength (gf) of polyolefin microporous film×length (mm) in TD of polyolefin microporous film, is 10 to 40% inclusive.

A multilayer film containing up to 15 wt % of a blend of cis-13-docosenamide and at least one primary antimicrobial material on or in an exterior layer of the film. The blend of cis-13-docosenamide and at least one primary antimicrobial material is either extruded as part of the surface layer of the film or coated onto the surface of the film.

The resin composition includes a block copolymer including a vinyl aromatic hydrocarbon-derived structural unit and a conjugated diene-derived structural unit, the resin composition satisfying the following (1) to (3): (1) an area ratio of components having a molecular weight in terms of polystyrene of equal to or more than 400,000 with respect to all components is equal to or more than 8% and equal to or less than 50%; (2) at least one main peak of a loss tangent value (tan δ) measured under a condition of a frequency of 1 Hz at a temperature rising rate of 4° C./min in accordance with ISO 6721-1 is present in a range of equal to or more than 70° C. and equal to or less than 100° C.; and (3) a strain hardening degree (λ max) of a compression-molded specimen prepared in accordance with ISO 293 is equal to or more than 2.0.

Methods for stretch-forming a thermoplastic film comprises: stretching the thermoplastic film between a first roller and a second roller, wherein the first the roller rotates at a first peripheral velocity and the second roller rotates at a second peripheral velocity that is higher than the first peripheral velocity; and advancing the thermoplastic film from the second roller to a third roller, wherein the third roller rotates at a third peripheral velocity that is lower than the second peripheral velocity, wherein a ratio of the third peripheral velocity to the second peripheral velocity is no larger than 0.95. The resulting breathable thermoplastic films may have a basis weight of no larger than 15 g/m.sup.2 and a shrinkage of no larger than 5%.

The present invention can provide a fiber-reinforced expanded particle molded article having a reinforcing material fused and integrated with the surface of an expanded molded article, wherein the reinforcing material is a fabric or a braided product produced by weaving a linear composite material produced by melting and integrating a thermoplastic fiber comprising a low-melting component fiber and a high-melting component fiber, as two or more threads selected from the group consisting of a warp, a weft and a slant thread, the fiber-reinforced expanded particle molded article exhibiting an excellent reinforcing effect; and a method for economically producing the molded article by in-mold molding with a small number of steps.

Provided are a multi-layered composite film that may be thermally-bonded to a fabric by using a hot melt adhesive that is dot-coated on the surface thereof, and a method of manufacturing the same. In particular, the present invention relates to: a thermally-bondable multi-layered composite film which can be used in the manufacture of outdoor clothing, has excellent breathability and waterproofing properties, and can simplify the process of manufacturing the outdoor clothing; and to a method for manufacturing same.

Described herein is a multilayer microporous film or membrane that may exhibit improved properties, including improved dielectric break down and strength, compared to prior monolayer or tri-layer microporous membranes of the same thickness. The preferred multilayer microporous membrane comprises microlayers and one or more lamination barriers. Also disclosed is a battery separator or battery comprising one or more of the multilayer microporous films or membranes. The inventive battery and battery separator is preferably safer and more robust than batteries and battery separators using prior monolayer and tri-layer microporous membranes. Also, described herein is a method for making the multilayer microporous separators, membranes or films described herein.