Abstract:
The present invention is a self-wound thermal transferable over-laminating (OL) tape, preferably for receiving a thermal transfer image from a thermal transfer ink ribbon and preferably using pressure-sensitive-adhesive (PSA). The preferred embodiment of the OL PSA tape comprises a layer of plastic film with two opposing sides. The first opposing side of the plastic film contacts a printable release coating comprising clear polyamide-carbamate receptive to wax-type, resin-type and wax-resin hybrid thermal transfer inks. The second opposing side of the plastic film contacts a pressure-sensitive-adhesive. The pressure sensitive adhesive is, preferably, acrylic adhesive.
Abstract:
An aqueous emulsion-type release coating composition comprising (i) a product produced by reaction of an ethylene-vinyl alcohol copolymer represented by the formula (1): wherein the sum of n, m and m′ is an integer of 300-3,000, ratio of n/(n+m+m′) is 0.1-0.9, and ratio of m/(m+m′) is 0.9-1.0, with a C8-30 alkyl isocyanate, and (ii) a surface active agent which is a combination of a nonionic surface active agent having a hydrophilic-lyophilic balance (HLB) of not larger than 12, with an ionic surface active agent. The release coating composition is used as a release agent for a pressure sensitive adhesive tape or contact sheet.
Abstract translation:一种水性乳液型剥离涂料组合物,其包含(i)通过由式(1)表示的乙烯 - 乙烯醇共聚物反应制备的产物:其中n,m和m'的总和为300-3,000的整数, n /(n + m + m')的比例为0.1-0.9,m /(m + m')的比率为0.9-1.0,与C8-30烷基异氰酸酯和(ⅱ)表面活性剂 是亲水亲油平衡(HLB)不大于12的非离子表面活性剂与离子表面活性剂的组合。 剥离涂料组合物用作压敏粘合带或接触片的脱模剂。
Abstract:
A releasing film comprising: a base film produced from a polyethylene naphthalate, and a releasing layer formed on one or both sides of the base film, wherein the polyethylene naphthalate contains naphthalenedicarboxylic acid as the main acid component and ethylene glycol as the main glycol component and further contains a manganese compound, a phosphorus compound and an antimony compound in Mn, P and Sb amounts satisfying all of the following formulas (1) to (3): 0.7≦Mn≦1.6 (1) 0.5≦Mn/P≦1.2 (2) 0.7≦Sb≦2.2 (3) (wherein Mn is moles of manganese element per 106 g of acid component; P is moles of phosphorus element per 106 g of acid component; and Sb is moles of antimony element per 106 g of acid component), and the base film has a surface center line average roughness (Ra) of 2 to 50 nm.
Abstract:
An ultraviolet curing pressure-sensitive adhesive sheet prepared by forming an ultraviolet curing pressure-sensitive adhesive layer on at least one surface of a substrate film and adhering a separator to the surface of the ultraviolet curing pressure-sensitive adhesive layer, wherein the separator has an ultraviolet transmittance at a wavelength of 300 to 400 nm of 65% or lower. The separator is obtained by forming a layer containing an ultraviolet absorber on the surface of the substrate film opposite the surface adhering to the pressure-sensitive adhesive layer or incorporating an ultraviolet absorber in the film. The ultraviolet curing pressure-sensitive adhesive sheet is useful as a semiconductor-protective pressure-sensitive adhesive sheet and a semiconductor wafer-fixing sheet, which can be used without causing a curing reaction with the exposure of a slight amount of ultraviolet rays from a surrounding environment at the standby for adhering wafers.
Abstract:
A double-sided heat-sensitive adhesive sheet comprises a support provided with a release layer on one side thereof and heat-sensitive adhesive layers which are formed on both sides of the support and have sufficient adhesion to the support but can be easily peeled apart from the release layer, wherein the release layer and the heat-sensitive adhesive layer has at their interface a 180null peeling resistance of 10-30 g/50 mm in a peel test performed at a peeling speed of 500 mm/min. in an atmosphere of 20null C. and 65% RH. The adhesive sheet is interposed between each opposed pair of information-recorded faces of recording material having on one side at least two spaces for information-recording, and heat is applied to the resultant assembly to make a laminate. The laminate can have a size and weight suitable for mailing as a postcard, and can bear confidential information on the inside and be peeled apart when desired.
Abstract:
Release coated pressure sensitive adhesive tape utilizing release coating compositions that are alkyl sulfide, alkyl sulfoxide and alkyl sulfone terminated oligomers. Superior release, printability, water base non-polluting characteristics and high temperature-high humidity aging resistance are obtained.
Abstract:
Pressure-sensitive adhesive material comprising a backing member, a pressure-sensitive adhesive on the front side thereof, and a release coat on the backside thereof comprising poly(amide acids), e.g., poly(N-fatty alkyl amide-acids) of the following recurring formula:
WHEREIN A is a divalent organic radical containing from 2 to 15, preferably 2 to 6, carbon atoms, B is a tetravalent organic radical containing at least 4 carbon atoms, R1 is hydrogen or an alkyl radical containing about 1 to 30 carbon atoms and R2 is an alkyl radical containing about 12 to 30 carbon atoms. When R1 is hydrogen, also provided are the corresponding cyclized imide products and mixtures of the polyamides and polyimides. These poly(amide acids) are formed by the reaction of tetracarboxylic acid dianhydrides and fatty diamines.
Abstract:
1,155,612. Decorative laminate. MINNESOTA MINING & MFG. CO. 27 June, 1966, No. 28642/66. Heading B5N. A decorative sheet assembly comprises a decorative polymeric foil 11, a layer of pressuresensitive adhesive (12) and a releasable paperbased-liner (13), the liner being provided with a release coating (15) on the surface which contacts the adhesive, in which the decorated foil has a lower total hygroexpansion than the removably adhered liner, the exposed surface of the liner is provided with a substantially continuous moisture vapour retardant polymeric skin, and the adhesion of the pressure-sensitive adhesive to the liner and the constant stress modulus of the pressure-sensitive adhesive are chosen so that the assembly remains substantially flat when subjected to marked humidity change. The polymeric foil may be polymethyl methacrylate, polyvinyl chloride, polystyrene, a polyimide, a polycarbonate or biaxially oriented polyethylene terephthalate. The release coating is preferably a dimethylpolysiloxane cured through silanic hydrogen and the vapour retardant polymer may be a vinylidene chloride - acrylonitrile polymer, a polyester, polyethylene or ethyl cellulose. Suitable pressure sensitive adhesives are copolymers of 2-ethyl hexyl acrylate with acrylic acid, a phenol-formaldehyde resin modified copolymer of 2-ethyl butyl acrylate with acrylic acid, a copolymer of methyl iso-amylacrylate with fusel oil acrylate, a blend of butadiene-styrene rubber with natural rubber or a polyisobutylene.