An interlayer for laminated glasses which does not cause the moire phenomenon even when having an embossed pattern with grooves and ridges disposed regularly or arranged at a regular interval, hence has satisfactory workability in cutting or laminating, and is highly effective in expelling air in preliminary press bonding; and a high-quality laminated glass produced with the same which is almost free from quality defects caused by residual bubbles. The interlayer is highly effective in air expelling even without strictly controlling the air expelling initiation temperature in the preliminary press bonding, is excellent in nonblocking properties during storage, handleability during glass processing, and productivity, and can be easily and efficiently used under various processing conditions. It comprises a thermoplastic resin sheet having on each side thereof an embossed pattern comprising grooves and ridges.

Interlayer for laminated glass, and laminated glass

Generally speaking, the present invention is a water-soluble copolymer film comprising a hydrolyzed copolymer of vinyl acetate and a second monomer, the resultant polyvinyl alcohol copolymer having a degree of hydrolysis, expressed as a percentage of vinyl acetate units converted to vinyl alcohol units, of from about 90% to 100%. The second monomer is preferably selected from the group of monomers having carboxylate functionality or sulfonate functionality. The resulting water-soluble copolymer film is disclosed for use in making pouches to contain a unit dose of liquid detergent, such as a liquid laundry detergent. However, it is an aspect of the copolymer film that film solubility is not significantly affected adversely by the detergent. Such film produces pouches having a greater storage shelf-life over prior art water-soluble film.

Water-soluble copolymer film packet

PROBLEM TO BE SOLVED: To provide a method for manufacturing a polarizing plate which is capable of uniformly pressurizing a laminate (a polarizing film and a transparent film) constituting a polarizing plate even if using sticking rolls of which the diameter is relatively smaller, and an apparatus for manufacturing a polarizing plate.SOLUTION: A method for manufacturing a polarizing plate includes: an adhesive coating process for applying an active energy ray curable adhesive to one surface of a transparent film or to one surface or both surfaces of a polarizing film; a sticking process for sticking the transparent film and the polarizing film by pressing at least one of a pair of sticking rolls toward a direction of the other sticking roll by using at least one pressing roll provided in contact with the sticking rolls in a state where a laminate formed by laminating the transparent film on one surface or both surfaces of the polarizing film via the adhesive is interposed between the pair of sticking rolls rotating in a conveyance direction; and an active energy ray irradiation process for curing the adhesive by irradiating the laminate with the active energy ray. A diameter of the center part of the pressing roll is larger than a diameter of the center part of the sticking rolls in contact with the pressing roll.

Method for manufacturing polarizing plate

The invention is a polyvinyl alcohol film having an YI value of at most 20, which is formed of a modified polyvinyl alcohol having a degree of polymerization of from 1500 to 5000, an ethylene unit content of from 1 to 4 mol % and a 1,2-glycol bond content of at most 1.4 mol %. The polyvinyl alcohol film gives polarizing films that contain no impurities and have good polarization performance, durability and hue stability.

Polyvinyl alcohol film

Antimicrobial compositions having a rapid and persistent antiviral and antibacterial effectiveness are disclosed. The antimicrobial compositions contain (a) a divalent zinc salt, (b) an optional disinfecting alcohol, (c) an optional antimicrobial agent, and (d) an optional organic acid, wherein the composition has a pH of about 5 or less.

Compositions Having a High Antiviral and Antibacterial Efficacy

PROBLEM TO BE SOLVED: To provide a polyvinyl alcohol film useful as a material for producing a polarizing film having good polarization preformances, reduced in color unevenness, and responding to an increase in the size of a liquid crystal display. SOLUTION: The ethylene-modified polyvinyl alcohol film is prepared from an ethylene-modified polyvinyl alcohol having an ethylene unit content of 1-4 mol%, a degree of polymerization of 2,000-4,000, and a degree of saponification of 99.0-99.99 mol% and has a hot-water cut temperature of 66-73°C. COPYRIGHT: (C)2003,JPO

Ethylene-modified polyvinyl alcohol film

PROBLEM TO BE SOLVED: To provide a polarizing film that has low content of boron atoms and has a small influence on an environment during its disposal or the like though the polarizing film has high transmittance, high polarization, and high optical characteristics; and to provide a method of manufacturing the polarizing film that efficiently manufactures the polarizing film, does not require much boric acid, manufactures a wide and thin polarizing film at high draw ratio and high yield, and contributes to cost reduction. SOLUTION: The polarizing film is obtained by coloring and uniaxially stretching a polyvinyl alcohol polymer film, and the content of boron atoms in the polarizing film is 0.1-2.0 mass% based on the mass of the polarizing film. In the method of manufacturing the polarizing film, the polyvinyl alcohol polymer film is colored and uniaxially stretched, and the uniaxial stretching is performed in aqueous solution containing 0.1-2.0 mass% of boric acid. COPYRIGHT: (C)2011,JPO&INPIT

Polarizing film and method of manufacturing the same

[Problem] To provide an original film for manufacturing an optical film that has exceptional stretching performance, makes it possible to manufacture the optical film to be manufactured in a productive manner, and makes it possible to readily manufacture an optical film having both exceptional optical characteristics and exceptional hue, as well as a method for manufacturing an optical film in which the original film is used. [Solution] An original film for manufacturing an optical film, the original film containing a hydroxymethyl-group-containing vinyl alcohol polymer that contains a structural unit represented by the following formula (1) and a vinyl alcohol unit; and a method for manufacturing an optical film, the method having a step for performing uniaxial stretching using the original film for manufacturing an optical film.

Original film for manufacturing optical film

PROBLEM TO BE SOLVED: To provide a method for manufacturing a PVA polymer based film which is readily manufacturable of a PVA polymer film that can provide a polarizing film which can be stretched with a high stretch ratio in stretching and has high polarization performance, and to provide a method for manufacturing a polarizing film which uses the PVA polymer film and which is superior in polarization performance. SOLUTION: The method for manufacturing a PVA polymer film irradiated with an electron beam is, such that a PVA polymer film having a moisture4 content of 10-40 wt.% is irradiated with an electron beam of 10-40 kGy, and in the method for manufacturing a polarizing film, the PVA polymer film irradiated with an electron beam and manufactured by the method for manufacturing a PVA polymer film, is dyed and stretched uniaxially. COPYRIGHT: (C)2011,JPO&INPIT

Method for manufacturing polyvinyl alcohol based polymer film

PROBLEM TO BE SOLVED: To provide a manufacturing method of a film for hydraulic transfer formed with a printing layer, which is well suited for forming the printing layer on the surface of a molded product having a three-dimensional face with irregularities or a curved face, and especially allows formation of the printing layer in a superfine manner by an ink-jet method, wherein the adhesive properties between a matter to be transferred and the printing layer is favorable and a process passage is excellent. SOLUTION: In the manufacturing method of the film for hydraulic transfer formed with the printing layer, the printing layer is formed onto the film for hydraulic transfer by the inkjet method. The film for hydraulic transfer is composed of a polyvinyl alcohol polymer film, wherein the degree of saponification of the polyvinyl alcohol polymer is 80-99 mol%, and at least one surface of the polyvinyl alcohol polymer film is coated with a polyurethane resin. COPYRIGHT: (C)2010,JPO&INPIT

Takanori Isozaki

Papers

Ethylene-modified polyvinyl alcohol film

Polarizing film and method of manufacturing the same

Original film for manufacturing optical film

Method for manufacturing polyvinyl alcohol based polymer film

Manufacturing method of film for hydraulic transfer formed with printing layer