A stretchable film includes, in a stacked form: a polyurethane film containing a repeating unit having a fluorine atom; and a polyurethane film containing a repeating unit having a silicon atom. At least one surface of the stretchable film is made of the polyurethane film containing a repeating unit having a fluorine atom. Thus, provided are: a stretchable film having excellent stretchability and strength, with the film surface having excellent water repellency; and a method for forming the stretchable film.

A method of producing wood-base panels, especially OSB wood-base panels is provided. The method including the steps of providing wood strands, applying at least one adhesive system to the wood strands having at least one polymer adhesive and at least one nanoparticle below 500 nm, and pressing the wood strands admixed with the adhesive system to form wood-base panels.

The present invention relates to an integrated process for the production of polyester tape, comprising the steps of a) preparing feed polyester comprising a polymerisation reaction in one or more reactors in series and measuring the viscosity of the obtained feed polyester, b) feeding the feed polyester obtained from step a) and optional additives to a melt mixing device, mixing said feed polyester and said optional additives so as to form a molten polyester composition and measuring the viscosity of the obtained polyester composition, c) extruding the molten polyester composition through a film extrusion die thereby forming a molten film of said polyester composition, d) preparing a polyester tape from said molten polyester film, said preparing comprising trimming the edges of the film at a stage where said film is below its melting temperature, e) feeding at least a part of the trimmed edges obtained in step d) in-line to the melt mixing device in step b) wherein the amount of trimmed edges and optional further additives fed to the melt mixing device in step b) is controlled on the basis of the measured viscosity of the polyester composition.

The present invention relates to an integrated process for the production of polyester tape, comprising the steps of a) preparing feed polyester comprising a polymerisation reaction in one or more reactors in series and measuring the viscosity of the obtained feed polyester, b) feeding the feed polyester obtained from step a) and optional additives to a melt mixing device, mixing said feed polyester and said optional additives so as to form a molten polyester composition and measuring the viscosity of the obtained polyester composition, c) extruding the molten polyester composition through a film extrusion die thereby forming a molten film of said polyester composition, d) preparing a polyester tape from said molten polyester film, said preparing comprising trimming the edges of the film at a stage where said film is below its melting temperature, e) feeding at least a part of the trimmed edges obtained in step d) in-line to the melt mixing device in step b) wherein the amount of trimmed edges and optional further additives fed to the melt mixing device in step b) is controlled on the basis of the measured viscosity of the polyester composition.

The present invention provides for concentrated aqueous silk fibroin solutions and an all-aqueous mode for preparation of concentrated aqueous fibroin solutions that avoids the use of organic solvents, direct additives, or harsh chemicals. The invention further provides for the use of these solutions in production of materials, e.g., fibers, films, foams, meshes, scaffolds and hydrogels.

The present invention provides for concentrated aqueous silk fibroin solutions and an all-aqueous mode for preparation of concentrated aqueous fibroin solutions that avoids the use of organic solvents, direct additives, or harsh chemicals. The invention further provides for the use of these solutions in production of materials, e.g., fibers, films, foams, meshes, scaffolds and hydrogels.

A method for improving tear resistance of stretch films in which two stretch films are bonded together with an adhesive by hot rolling or UV curing such that their primary stretch directions cross each other. Composite films resulting from the invention possess significantly improved slit tear strength and tear resistance over biaxially stretched films with the same thicknesses. The invention can be widely used to improve tear resistance of stretch films fabricated from various existing materials and processes. In addition, it allows simple operations and is readily applicable to mass production.

A method for improving tear resistance of stretch films in which two stretch films are bonded together with an adhesive by hot rolling or UV curing such that their primary stretch directions cross each other. Composite films resulting from the invention possess significantly improved slit tear strength and tear resistance over biaxially stretched films with the same thicknesses. The invention can be widely used to improve tear resistance of stretch films fabricated from various existing materials and processes. In addition, it allows simple operations and is readily applicable to mass production.

A cushioning material and a method to make the same is disclosed. The cushioning material includes: a cellulose base sheet; a co-layer binder disposed on the cellulose base sheet; and a plurality of discrete cuts disposed in the cellulose base sheet, wherein the cellulose base sheet is configured to be expanded and locked using heat activation and a solvent.

A roofing membrane comprising an olefinic rubber; and from about 20 to about 250 parts by weight of a silica filler per 100 parts by weight rubber; wherein the silica filler is chemically coupled to the olefinic rubber; and wherein the roofing membrane is non-black.