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 vinyl alcohol polymer film which is useful as a material for manufacturing a polarizing film and of which the local unevenness of the thickness in a portion corresponding to a joint of an endless belt is small. SOLUTION: The vinyl alcohol polymer film is made by a method wherein a film-making material containing a vinyl alcohol polymer is cast or discharged from a slit-like opening part being slender in the width direction of the endless belt onto the endless belt stretched between two or more rolls. The unevenness of the thickness of the film in a portion corresponding to the vicinity of the joint of the endless belt is 15 μm or less. COPYRIGHT: (C)2003,JPO

Takanori Isozaki

Papers

Vinyl alcohol polymer film and polarizing film