Nippon Filcon Co., Limited

Menicon Co., Ltd.

Toyo Contact Lens Company, Limited

Tatsutoshi Nakajima

Akihisa Sugiyama

Kyoichi Tanaka

Nobuyuki Toyoshima

Yoshitaka Taniyama

Ichihiro Kitamura

Shinji Kanome

Haruyuki Hiratani

Kouzou Takahashi

Mitsuhiro Kanada

Senri Ito

Yoshihisa Kondou

Masashige Yamanaka

Kazuhiko Nakada

A dewatering and thickening belt having an endless fabric woven with synthetic resin filaments, a bending-resistant element and a guide protrusion, wherein the guide protrusion is fusion-bonded to a bending-resistant portion to which the bending-resistant element has been attached so that the outer end portion of the guide protrusion is located inside the end portion of the fabric. The inner end portion of the guide protrusion is located 20 to 50 mm outside the inner end portion of the bending-resistant element.

Dewatering and thickening belt having improved guide performance and manufacturing method thereof

In a press fabric for a pulp machine having a multilayer structure, which fabric is woven using, as a warp, a monofilament as a warp and, as wefts, a yarn obtained by bundling raw yarns of a small diameter and forming a fine water sucking space therebetween and a monofilament, at least an upper surface side weft and a lower surface side weft are arranged vertically as the wefts; the yarns forming a fine water-sucking space and monofilament are used as wefts constituting the lower side layer; they are arranged at a ratio of 2:2 or 1:2; and two monofilaments are arranged adjacent to each other as the lower surface side wefts, whereby the press fabric can maintain its dewatering channel for discharging water to the back surface side from the initial stage to the final stage of use.

Press fabric for pulp machine

Process for producing contact lens with hydrophilic surface and contact

The invention provides a cleaning method for removing dirt on an industrial belt and a cleaning belt used in the same. A cleaning belt having through-holes is provided onto an industrial belt. The cleaning belt comprises structural unit pieces in parallel to one another in a lengthwise direction. Each of the unit pieces is loosely interconnected and has a play such that the unit piece can move. The movement gives vibration onto the industrial belt when the cleaning belt is brought in contact with the surface of a running industrial belt. Then dirt on the industrial belt is removed through the through-holes.

Cleaning belt for an industrial belt

Method for manufacturing a non-woven fabric with irregular patterns by using a belt having projections for providing irregular patterns on the non-woven fabric and applying highly pressurized water and hot air onto a fiber assembly placed on and carried by the belt in order to press the fiber assembly to the belt and entangle the fiber of the fiber assembly.

Belt for fabricating a non-woven fabric with projections and method for

A method for treating the surface of an oxygen permeable hard contact lens, which comprises applying high-frequency glow discharge treatment to an oxygen permeable hard contact lens made of a copolymer consisting essentially of at least one monomer selected from the group consisting of a silicone-containing (meth)acrylate, a fluorine-containing (meth)acrylate, a silicone-containing styrene and a fluorine-containing styrene, in a gas atmosphere of at least one member selected from the group consisting of helium, neon, argon and nitrogen gas, containing substantially no oxygen.

Method for treating the surface of an oxygen permeable hard contact lens

A method for treating the surface of an oxygen permeable hard contact lens, which comprises applying high-frequency glow discharge treatment to an oxygen permeable hard contact lens made of a copolymer consisting essentially of a silicone-containing (meth)acrylate and/or a fluorine-containing (meth)acrylate, in a gas atmosphere of at least one member selected from the group consisting of helium, neon, argon and nitrogen gas, containing substantially no oxygen.

A highly water-absorptive soft contact lens made of a copolymer comprising

High water-absorptive soft contact lens

A water-absorptive contact lens made of a copolymer comprising units of an ester of acrylic or methacrylic acid and at least one saccharide selected from D-galactose, D-glucose and D-mannose and units of at least one member selected from a hydrophilic monomer and a hydrophobic monomer, which has excellent oxygen permeability and affinity for the eye and can be worn continuously for a long period of time. The contact lens is prepared by polymerizing a monomer mixture containing an ester of acrylic or methacrylic acid with a ketalized saccharide and a hydrophilic monomer and/or a hydrophobic monomer, and after forming the resulting copolymer into a contact lens, if necessary, treating the copolymer having a shape of contact lens with an acid to convert the ketal groups into hydroxyl groups.

Contact lens and process for preparing the same

A copolymer suitable for use as soft contact lenses, comprising a polymerization product of (a) at least one monomer selected from methyldi(trimethylsiloxy)sylylpropylglycerol methacrylate and methyldi(trimethylsiloxy)sylylpropylglycerolethyl methacrylate, (b) a hydrophilic monomer and (c) a cross-linking agent having at least two copolymerizable functional groups. Soft contact lens made of the above copolymer has excellent oxygen permeability in spite of low water content and can be comfortably worn continuously for a long term without a foreign body sensation and pain.

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Nagoya, Japan

Tatsutoshi Nakajima