A method of production of a tissue sealing patch is disclosed. The method comprises applying a vacuum to a heated work surface; applying a solution of a biocompatible polyurethane polymer to the work surface and spreading it over the work surface with a polymer blade; evaporating the solvent; heating the work surface above the softening temperature of the polymer; spreading powdered tissue sealant material over the polymer film; incorporating the tissue sealant material to a depth of 20-60 μm in the film by pressing on a release sheet placed over the powder and polymer film; removing the release sheet from the adhesive patch material; releasing the vacuum; cooling said work surface; and removing the adhesive patch material from said work surface. The biocompatible polymer preferably comprises PEG-caprolactone-lactic acid units connected by urethane linkages, the PEG having a molecular weight of 3000-3500 amu, and a CL:LA:PEG ratio of 34:2:1.

A method of production of a tissue sealing patch is disclosed. The method comprises applying a vacuum to a heated work surface; applying a solution of a biocompatible polyurethane polymer to the work surface and spreading it over the work surface with a polymer blade; evaporating the solvent; heating the work surface above the softening temperature of the polymer; spreading powdered tissue sealant material over the polymer film; incorporating the tissue sealant material to a depth of 20-60 μm in the film by pressing on a release sheet placed over the powder and polymer film; removing the release sheet from the adhesive patch material; releasing the vacuum; cooling said work surface; and removing the adhesive patch material from said work surface. The biocompatible polymer preferably comprises PEG-caprolactone-lactic acid units connected by urethane linkages, the PEG having a molecular weight of 3000-3500 amu, and a CL:LA:PEG ratio of 34:2:1.

According to an example aspect of the present invention, there is provided a cost-effective method of producing cellulose based films by introducing an intense water removal system to the process, and cellulose based films thereof having improved properties.

According to an example aspect of the present invention, there is provided a cost-effective method of producing cellulose based films by introducing an intense water removal system to the process, and cellulose based films thereof having improved properties.

A stretch film (1) contains an olefin elastomer and an inorganic filler (3). Stress at 50% elongation is 6.0 N or more and 15.0 N or less, and moisture permeability is 1000 g/(m.sup.2.Math.24 h) or more.

A stretch film (1) contains an olefin elastomer and an inorganic filler (3). Stress at 50% elongation is 6.0 N or more and 15.0 N or less, and moisture permeability is 1000 g/(m.sup.2.Math.24 h) or more.

A black polyester film and a method for manufacturing the same are provided. The method for manufacturing the black polyester film includes: providing a recycled polyester material; physically regenerating a part of the recycled polyester material to form physically regenerated polyester chips having a first intrinsic viscosity; chemically regenerating another part of the recycled polyester material to form chemically regenerated polyester chips having a second intrinsic viscosity lower than the first intrinsic viscosity; mixing black regenerated polyester chips, the physically regenerated polyester chips, and the chemically regenerated polyester chips according to a predetermined intrinsic viscosity so as to form a polyester chip raw material; melting and then extruding the polyester chips raw material to form the black polyester film having the predetermined intrinsic viscosity.

A wide microporous film comprises one or more layers comprising a polyolefin; wherein the film has a width of a least 40 inches, at least 45 inches, at least 50 inches, at least 55 inches, at least 60 inches, at least 65 inches, or at least 70 inches.

A method for producing a phase difference film is provided. The phase difference film consisting of a resin C contains a copolymer P containing a polymerization unit A and a polymerization unit B, and includes a phase separation structure that exhibits a structural birefringence. The phase separation structure includes a phase including as a main component the polymerization unit A and another phase including as a main component the polymerization unit B. The phase difference film has an NZ factor of greater than 0 and smaller than 1. The method comprises: forming a single layer film of a resin C; and causing phase separation of the resin C in the film, which includes a step of applying to the film a stress along a thickness direction thereof.

The present invention provides a biaxially-oriented polypropylene film having high stiffness, excellent heat resistance to high temperature as high as 150° C., easiness of maintaining its bag shape when made into a packaging bag, less printing pitch shift at the time of printing, and less wrinkles of heat sealed part when heat sealed. The biaxially-oriented polypropylene film satisfies the following formulae (1) to (3): (1) a half width of a peak derived from an oriented crystal in a width direction of the film in an azimuth dependence of a (110) plane of polypropylene α-type crystal through measurement with wide-angle X rays diffraction is 25° or less; (2) the film has a heat-shrinkage ratio at 150° C. of 10% or less in a longitudinal direction and 24% or less in a width direction; and (3) the film has a tensile elongation at break at 23° C. of 195% or more in the longitudinal direction.