44results about How to "Improve release force" patented technology

A valve mechanism having at least one movable valve member for sealing of a valve opening in a housing. Movements of the individual movable valve members are accomplished essentially parallelly to, and perpendicularly to, the seat surface of the valve during the opening and closing of the valve. In order to achieve high forces and low wear in the movement carried out with aid of a slot guide which guide serves to transmit forces during, and in the direction of, the opening and closing, the slot guide comprises slots which are formed in a drive plate, which slots cooperate with and overlap complementary slots in the movable valve members.

A curable organopolysiloxane composition comprising: (A) at least one type of gum-like or liquid organopolysiloxane having a viscosity of not less than 20 mPa·s, a content of the vinyl(CH2═CH—) part of higher alkenyl groups being in a range of 2.0 to 5.0% by mass; (B) an organopolysiloxane resin formed essentially from R13SiO1 / 2 units and SiO4 / 2 units, a molar ratio of the R13SiO1 / 2 units to the SiO4 / 2 units being from 0.5 to 2.0 and a content of the vinyl(CH2═CH—) part of alkenyl groups being less than 1.0% by mass; (C) an organohydrogenpolysiloxane; (D) a hydrosilylation reaction catalyst; and, optionally, (E) an organic solvent. In such a composition, a mass ratio of the component (A) to the component (B) is in a range of 2 / 8 to 8 / 2.

There is provided a novel nonflammable release agent composition for a plastic mold containing: (a) a hydrofluoroether; (b) fluorine oil; and (c) a fluorine-based surfactant, in which the content of the ingredient (a) is 50 wt % or more. The composition is lowly toxic, noncombustible, and more chemically stable than a conventional one, and brings together high persistence of releasability and sufficient durability.

In a recording tape cartridge, a compression coil spring urges a reel downward via a brake member. Due to the biasing force of the spring, a gear of the brake member securely meshes with a gear inside a reel hub preventing the reel's inadvertent rotation. The biasing force urges lock members outward in a radial direction from the center of a mount or the reel. Engagement portions of the lock members engage with an upper edge of the hub. The outer side surfaces of the engagement portions press against the inner peripheral surface of the hub, and ends of the engagement portions at a further outer side than the body portions intervene between the upper surface of an upper flange and the inner surface of a top plate to prevent rotation of the reel and to control movement of the reel in either a radial or an axial direction.

The invention discloses a release film for AB adhesive films. The release film comprises a release film base material and a release agent layer coating the surface of the release film base material. The invention provides three release films with a unified solution suitable for AB adhesive films. Alkyl acrylates with different chain lengths are used as active monomer diluents, and the alkyl acrylates with different chain lengths are used to adjust the release force, so that the release films can be prepared by adopting an approximate content ratio and the same process, and the research and development and manufacturing costs are reduced.

Method for preparing a substrate comprising an anti-adhesive silicone coating obtained from an anti-adhesive silicone composition based on crosslinked silicone oil(s) with adhesion properties that are modified compared with the initial properties thereof, in which provision is made for a substrate at least partly coated with an anti-adhesive silicone coating and the anti-adhesive silicone coating is cold-plasma-treated, approximately at atmospheric pressure, in an optionally doped nitrogen atmosphere or in an optionally doped carbon dioxide atmosphere, substrate at least partially coated with an anti-adhesive silicone composition, silicone-self-adhesive complex and uses.

A heavy release additive for a release sheet comprises a condensation reaction product of dehydrative condensation reaction between (A) a polydiorganosiloxane of average polymerization degree of 500 to 10,000 and has at least one hydroxy or hydrolysable group per molecule and (B) a polyorganosiloxane resin composed of a (SiO4 / 2) unit and a (R3SiO1 / 2) unit (wherein R's independently represent a C1-12 monovalent hydrocarbon group or a C2-6 alkenyl group each having no aliphatic unsaturated bond), has a ratio of the (R3SiO1 / 2) unit to the (SiO4 / 2) unit of 0.6 to 1.2 by mole, and contains the hydroxy group and the hydrolysable group in the total content of 2.1 mass % or more and less than 10.0 mass %. The heavy release additive can have the effect of achieving an extremely great peel force compared with cases in which no additive is added.

A color filter array panel includes: a substrate; a light blocking member on the substrate; a color filter on the substrate and partially overlapping the light blocking member, and having an opening exposing the substrate; a protective member in the opening; and a common electrode on the light blocking member and the color filter, and having a cut portion at a position corresponding to the opening.

The present invention relates to a clamping apparatus for a disc player which is able to accurately release a clamper from a turntable while improving miniaturization and thinning. The clamping apparatus for the disc player where the turntable and the clamper clamp a disc by magnetic force comprises a clamper releasing means having a pair of linking mechanisms arranged in symmetrical positions across the axial line of the clamper, and each linking mechanism has a front linking member and a rear linking member with the ability to freely rotate with the frame by centering two rotational axes placed on a single flat surface that is orthogonal to the axial line, and a clamper releasing member which is axially supported at each rotating end of the front linking member and the rear linking member; the mutually opposing ends of both clamper releasing members are moved with a circular trajectory by synchronously rotating the front linking member and the rear linking member, and the ends of both clamper releasing members are engaged to the outer periphery of the clamper, releasing the clamper from the turntable.

The invention discloses an automatic parachute fall off mechanism of an unmanned aerial vehicle. The automatic parachute fall off mechanism is composed of fall off joint connectors, a rotary electromagnet, a rotary guide rail, a spring, a parachute belt, a parachute belt shaft and a cotter pin. The automatic fall off mechanism is connected to the parachute belt through an upper fall off joint connector and a lower fall off joint connector, and the parachute belt is connected with the unmanned aerial vehicle. When the unmanned aerial vehicle parachutes and lands, a control circuit controls therotary electromagnet to drive the rotary guide rail to rotate, so that the ball falls into an arc-shaped groove of the guide rail to fall off, the constraint of the ball on the fall-off joint upper connector and the fall-off joint lower connector is relieved; after the ball falls off, the spring release force is increased to separate the fall-off joint upper connector from the fall-off joint lower connector, and parachute throwing is completed. The rotary electromagnet and the rotary guide rail are designed, the rotary electromagnet is used for driving the rotary guide rail to rotate to achieve ball falling, and an unlocking structure and the unlocking process are simplified. The automatic parachute fall off mechanism is simple in structure, convenient to install and capable of safely andreliably achieving separation of the parachute and the unmanned aerial vehicle.

The present invention relates to an emulsion-based high release additive for a release sheet, the additive being characterized by being obtained by dispersing in water a condensation product (A) obtained by subjecting the following to a dehydration condensation reaction: (A-1) a polydiorganosiloxane which has an average degree of polymerization of 100-300,000 and which has one or more hydroxyl groups or hydrolyzable groups per molecule; and (A-2) a polyorganosiloxane resin, which contains (SiO4 / 2) units and (R3SiO1 / 2) units (in the formulae, the R groups each represent independently a monovalent hydrocarbon group having 1-12 carbon atoms and not having an aliphatic unsaturated bond or an alkenyl group having 2-6 carbon atoms) as primary components, in which the molar ratio of (R3SiO1 / 2) units relative to (SiO4 / 2) units is 0.6-1.2 and in which the total content of hydroxyl groups and hydrolyzable groups is not lower than 2.1 mass % and lower than 10.0 mass %. The present invention can obtain a silicone cured coating film having a high release force by adding the additive to a curable composition for a release sheet such as a release paper or release film, coating the same on a variety of base materials and curing.

The invention discloses a release film for a polaroid. The release film comprises a release film base material and a release agent layer coated on the surface of the release film base material, and the release agent layer is prepared from an ultraviolet light curing release agent prepared from the following raw materials in parts by weight: 60-140 parts of polybutadiene polyurethane, 45-85 parts of polyacrylate resin, 10-25 parts of hydroxypropyl methacrylate, 25-55 parts of a trifluoroethyl methacrylate active monomer diluent, 25-55 parts of an octadecyl methacrylate active monomer diluent and 1-5 parts of 2-hydroxy-2-methyl-1-phenyl-1-acetone serving as an initiator. The ultraviolet curing release agent is an ultraviolet curing release agent without a silicone oil component, high-temperature baking is not needed, no silicone oil seeps out, and the phenomenon that the PAS adhesive is pulled up due to transfer of the silicone oil component is completely eradicated.