摘要:
The present invention relates to a double-faced pressure-sensitive adhesive tape or sheet, which comprises: a base material; a pressure-sensitive adhesive layer disposed on one surface of the base material, which is a pressure-sensitive adhesive layer (A) including a pressure-sensitive adhesive composition containing an acrylic polymer (A1), and a silicone rubber fine particle (A2) in a proportion of from 3 to 50 parts by weight with respect to 100 parts by weight of the acrylic polymer (A1), the layer (A) being used so as to adhere to the liquid crystal display module unit; and another pressure-sensitive adhesive layer disposed on the other surface of the base material, which is a pressure-sensitive adhesive layer (B) including a pressure-sensitive adhesive composition containing an acrylic polymer (B1), and a low-molecular weight polymer component (B2), which contains, as a principal monomer component, an ethylenic unsaturated monomer having a glass transition temperature of from 60 to 190° C. when it is formed into a homopolymer and having a cyclic structure within the molecule thereof, and which has a weight-average molecular weight equal to or higher than 3,000 but lower than 20,000, in a proportion of from 5 to 35 parts by weight with respect to 100 parts by weight of the acrylic polymer (B1), the layer (B) being used so as to adhere to the backlight, in which the pressure-sensitive adhesive tape or sheet is for use in fixing a liquid crystal display module unit and a backlight unit.
摘要:
The adhesive composition of the present invention has a gel fraction of 20-50%, which comprises an acrylic polymer obtained by polymerizing a monomer mixture containing the following component (a) as a main component and the following component (b) in a proportion of 5-49 wt %: component (a): an alkyl (meth)acrylate wherein the alkyl group has 4 to 12 carbon atoms, component (b): a carboxyl group-containing monomer having a carboxyl group and an ethylenic unsaturated double bond, which affords, when polymerized, a homopolymer having a glass transition temperature of not more than 70° C. Since the adhesive composition of the present invention is superior in all of the adhesion, impact resistance and repulsion resistance, it can adhere even to a part having a coated film formed on a surface to be adhered.
摘要:
The present invention provides a polyolefin-based release agent containing liquid hydrocarbon with viscosity at 38° C. of 5-1500 Pa·s as measured according to JIS K7117-1.
摘要:
A monolayer metal gasket is disclosed, which may be kept against deformation around a bolt hole and further made stable in sealing stress around a gas hole between mating surfaces of confronting components. A first extra thickness around the gas hole is provided by turning back a part of a metallic sheet on a major flat of the metallic sheet, with leaving a space open between them to form a folded construction having elasticity. A second extra thickness around a bolt hole is a closely layered construction of nearly rigid body little to be deformed. When the monolayer metal gasket is squeezed between the mating surfaces of the confronting components, a clearance between the mating surfaces may be regulated to a preselected distance by virtue of the second extra thickness that is little to be deformed.
摘要:
The present invention provides a release agent containing polyolefin, isocyanate, polyolefin polyol and a metal complex catalyst, wherein the metal complex catalyst is a non-organotin compound.
摘要:
Provided is a release agent capable of maintaining the inherent detachability of polyolefin and showing good adhesion to the substrate and a release material using the release agent, and an adhesive tape having such release material. A release agent containing at least a polyolefin, an aromatic isocyanate having three or more isocyanate groups in one molecule, and a polyolefin polyol having a number-average molecular weight of 1500 to 5000.
摘要:
A pressure-sensitive adhesive tape is provided with a pressure-sensitive adhesive layer and a water-repellent layer formed on the pressure-sensitive adhesive surface of the pressure-sensitive adhesive layer. The water-repellent layer is formed by using a water repellent exhibiting the water repellency in which a contact angle with water is greater than or equal to 140°. The water-repellent layer may have hydrophobic fine particles. The hydrophobic fine particle may contain a hydrophobic fine silica compound. The hydrophobic fine silica compound may be modified with hexamethyldisilazane.
摘要:
In this metal gasket, the stopper plate stacked on the bead base plates has its reduced thickness portionwhose thickness is smaller than the thickness of the stopper plate body-folded back to form a stopper portion. This structure provides the stopper portion with a limited stopper function with fewer parts. Between a pair of bead base plates that seal around the bore holes of the metal gasket is clamped an intermediate plate as the stopper plate. Around the bore holes in the intermediate plate are arranged folded portions, whose total thickness is larger than the thickness of the stopper plate body, to restrict the deformation of the beads. The folded portions are formed by folding back fold parts onto base parts that are thinner than the stopper plate body. This structure can limit the step height (stopper height) of the intermediate plate without using other parts such as metal plates or stopper pieces.
摘要:
The present invention provides a release agent containing at least a nonreactive polyolefin, an aromatic isocyanate having 3 or more isocyanate groups in one molecule and a polyolefin polyol, wherein the content of the nonreactive polyolefin is not less than 80 wt %, and not less than 90 wt % of the nonreactive polyolefin has tensile elasticity at 23° C. of not more than 10 MPa and tensile fracture stress at 23° C. of not more than 8 MPa.
摘要:
In a metallic gasket having a metallic sheet made with a recess surrounding around a diverse type of hole, in which an elastic sealing member is installed, a relation between the recess and the elastic sealing member in their cross sections and also configurations is so specified as to use the elastic sealing member within a range of elastic limit inherent in the elastic sealing member, thereby improving the sealing performance of the metallic gasket. The elastic sealing member is smaller than the recess in their cross section perpendicular to the major side of the metallic sheet. Thus, the elastic sealing member, when the metallic gasket is squeezed, may serve its useful function within the range of inherent elastic limit.