摘要:
A multi-layer assembly that includes a release liner, a first layer disposed on the release liner, the first layer including a pressure-sensitive adhesive composition that includes a silicone polymer that includes silicone polyurea block copolymers, polydiorganosiloxane polymers, or combinations thereof, a second layer disposed on the first layer, the second layer including a composition that includes an elastomer, the composition of the second layer being different from the pressure-sensitive adhesive composition of the first layer, the first layer of the multi-layer assembly exhibiting a release force to the release liner of no greater than 100 gram per 0.5 inch width after the multi-layer assembly has been stored for 46 days at 120° F.
摘要:
A release base paper having silicate-containing primer coats based on potassium or sodium waterglass, due to which the penetration of subsequent coatings comprising aqueous, solvent-containing or solvent-free silicone systems into the texture of the paper is decreased and a reduction in the silicone requirement in order to achieve predetermined release forces is thereby achieved.
摘要:
A release liner based stock for use as a carrier web including a paper substrate having an upper surface and a lower surface. A release agent is coating on the top of the upper surface. The unique soap-based acrylic layer discourages curling of the base stock release liner, fiber pick-off contamination from the uncoated side of the paper substrate, and maintains a consistent peel off force required for removing a label from the release liner and deploying it on a target object.
摘要:
The present invention is directed to a printable release composition used for pressure sensitive labels and the like. The invention is also directed to an article, such as a label, that comprises a substrate such as paper, optionally a thermal transfer primer coating coated onto the substrate and a release layer coated onto the transfer primer coating or onto the substrate. The printable release composition of the present invention may be used with labels having permanent, repositionable or removable adhesives. The particular composition of the release layer depends on the type of adhesive that is appropriate for the desired end use.
摘要:
A composite structure comprising i) a release liner comprising a release composition; and ii) a pressure-sensitive adhesive coated backing wherein the pressure-sensitive adhesive has a relatively high storage modulus. The composite structure exhibits a low unwind noise as a result of the release composition employed.
摘要:
Proposed is an improved radiation-curable organopolysiloxane composition capable of giving a cured surface film on a substrate surface which exhibits excellent releasability against sticky substances. The composition is obtained by combining two kinds of (meth)acryloxyalkyl-containing organopolysiloxanes in a specified weight proportion, of which one has a relatively large degree of polymerization but contains only a relatively small amount of the silicon-bonded (meth)acryloxyalkyl groups while the other has a relatively small degree of polymerization but contains a relatively large amount of the silicon-bonded (meth)acryloxyalkyl groups. By virtue of this unique formulation, the surface-release sheet provided with a cured surface film of this organopolysiloxane composition and attached to a sticky surface for temporary protection is safe from generation of a peeling noise which is unavoidable in the prior art when a surface-release sheet is peeled off from the sticky surface at a high peeling velocity, especially, when the peeling resistance is great.
摘要:
The invention provides organopolysiloxane compositions for a releasable substrate which are superior in curability, anti-static property, oil resistance, and slipperiness, and provide a good releasability to the treated objects, said composition comprising (1) 100 parts by weight of an organopolysiloxane which comprises at least two alkenyl groups and 5 to 50 mol % of a chemical unit expressed by formula (I) ##STR1## (2) 1 to 100 parts by weight of an organohydrogen polysiloxane which comprises at least three hydrogen atoms bonded to silicon atoms per molecule, and (3) a catalytic amount of platinum or platinum compound.
摘要:
A composite structure comprising a substrate bearing a layer of release coating prepared from one or more epoxypolysiloxanes together providing cycloaliphatic epoxy group(s) and non-cycloaliphatic (i.e., linear or branched aliphatic) epoxy group(s). The resulting release coating cures quickly and exhibits low release levels to adhesives. An oligomeric epoxypolysiloxane comprising both cycloaliphatic and non-cycloaliphatic epoxy groups is also disclosed.
摘要:
A composite sheet of a film form base liner, a cured release coating laminated to at least one side of the base liner, and a skin, on the top-most portion of the base liner proximate to the release coating, comprising a polymer which is compatible with the base liner and contains pendant acid groups.
摘要:
A substrate is provided with a release surface by application of an emulsion of a vinyl-addition silicone system and catalyst therefor and a particulate component, preferably a resin. The vinyl addition silicone system is cured upon application of heat and removal of water.