摘要:
Disclosed is a polylactic acid-based film or sheet as a resin film or sheet including a polylactic acid (A). The film or sheet has a melt endotherm ΔHc′ of 10 J/g or more, where ΔHc′ is of a region crystallized upon film formation and specified by following Expression (1): ΔHc′=ΔHm−ΔHc (1) wherein ΔHc represents an exotherm (J/g) associated with crystallization of the film or sheet in a temperature rise process after film formation; and ΔHm represents an endotherm (J/g) associated with subsequent melting of the film or sheet, each determined by DSC. The film or sheet has a tear strength of 2.5 N/mm or more both in a machine direction (MD) and a transverse direction (TD). The polylactic acid-based resin film or sheet is resistant to melting and deformation even at an elevated temperature higher than 100° C. and is resistant to breaking and tearing during winding into a roll.
摘要:
Efficiently produced is a release liner including a plant-derived film as a substrate and having a good appearance, releasability, and adhesion. A method according to the present invention produces a release liner having a plant-derived film substrate and, on at least one side thereof, a release coat layer derived from a thermosetting silicone resin. The method includes the steps as follows: Step A of applying a thermosetting silicone release agent to at least one side of a plant-derived film substrate, the release agent containing 100 parts by weight of a thermosetting silicone resin and 0.05 to 0.55 part by weight of a curing catalyst; Step B of drying at 40° C. to 90° C. for 10 to 60 seconds after Step A; Step C of applying an ultraviolet ray at 50 to 300 mJ/cm2 after Step B; and Step D of aging at 30° C. to 70° C. for 12 to 240 hours after Step C.
摘要翻译:有效制造的是具有植物来源的膜作为基材并具有良好的外观,脱模性和粘合性的剥离衬垫。 根据本发明的方法产生具有植物衍生膜基材的剥离衬垫,并且在其至少一侧上具有源自热固性硅树脂的剥离涂层。 该方法包括以下步骤:步骤A,将热固性硅氧烷脱模剂涂布在植物来源的膜基材的至少一侧,脱模剂含有100重量份的热固性硅树脂和0.05-0.55重量份 的固化催化剂; 步骤B在步骤A之后在40℃至90℃下干燥10至60秒; 在步骤B之后施加50-300mJ / cm 2的紫外线的步骤C; 和步骤D在30℃至70℃下老化12至240小时。
摘要:
Efficiently produced is a release liner including a plant-derived film as a substrate and having a good appearance, releasability, and adhesion. A method according to the present invention produces a release liner having a plant-derived film substrate and, on at least one side thereof, a release coat layer derived from a thermosetting silicone resin. The method includes the steps as follows: Step A of applying a thermosetting silicone release agent to at least one side of a plant-derived film substrate, the release agent containing 100 parts by weight of a thermosetting silicone resin and 0.05 to 0.55 part by weight of a curing catalyst; Step B of drying at 40° C. to 90° C. for 10 to 60 seconds after Step A; Step C of applying an ultraviolet ray at 50 to 300 mJ/cm2 after Step B; and Step D of aging at 30° C. to 70° C. for 12 to 240 hours after Step C.
摘要翻译:有效制造的是具有植物来源的膜作为基材并具有良好的外观,脱模性和粘合性的剥离衬垫。 根据本发明的方法产生具有植物衍生膜基材的剥离衬垫,并且在其至少一侧上具有源自热固性硅树脂的剥离涂层。 该方法包括以下步骤:步骤A,将热固性硅氧烷脱模剂涂布在植物来源的膜基材的至少一侧,脱模剂含有100重量份的热固性硅树脂和0.05-0.55重量份 的固化催化剂; 步骤B在步骤A之后在40℃至90℃下干燥10至60秒; 在步骤B之后施加50-300mJ / cm 2的紫外线的步骤C; 和步骤D在30℃至70℃下老化12至240小时。
摘要:
A thermally removable pressure-sensitive adhesive sheet includes a substrate and a pressure-sensitive adhesive layer that is provided on at least one side of the substrate and made from a polyester-based pressure-sensitive adhesive composition containing a polyester including at least a lactic acid unit, a dibasic acid unit, and a glycol unit, a foaming agent, and a crosslinking agent. The dibasic acid unit includes a dimer acid, the polyester has a weight average molecular weight of 20,000 to 200,000 and a glass transition temperature of −70 to −20° C. as measured using a differential scanning calorimeter at a temperature rise rate of 20° C./minute, and the polyester has a hydroxyl value of 1 to 60 mgKOH/g.
摘要翻译:热可去除的压敏粘合片包括基材和压敏粘合剂层,其设置在基材的至少一侧上,并由含有至少包含乳酸的聚酯的聚酯类压敏粘合剂组合物制成 单元,二元酸单元和二元醇单元,发泡剂和交联剂。 二元酸单元包括二聚酸,聚酯的重均分子量为20,000〜200,000,玻璃化转变温度为-70〜-20℃,使用差示扫描量热计,以20℃的升温速度 C. /分,聚酯的羟值为1〜60mgKOH / g。
摘要:
The present invention provides a polyester, a polyester composition and a pressure-sensitive adhesive composition capable of obtaining a pressure-sensitive adhesive which is global-environmentally friendly and is excellent in pressure-sensitive adhesion properties, using a plant-derived raw material; and a pressure-sensitive adhesive layer and a pressure-sensitive adhesive sheet which can be obtained by using the same. A polyester of the present invention is a polyester comprising at least a lactic acid unit, a dibasic acid unit and a glycol unit, wherein the dibasic acid unit contains dimer acid, and the polyester has a glass transition temperature as measured at a temperature rising rate of 20° C./minute using a differential scanning calorimeter, of −70 to −20° C., a weight average molecular weight of 20,000 to 300,000 and a hydroxyl value of 1 to 100 mgKOH/g.
摘要:
The present invention has an object to provide a solvent-free polyester-based adhesive composition having good coatability and capable of forming an adhesive that shows good adhesion performance. The present invention provides a polyester-based adhesive composition containing a polyester having Mw of from 1×103 to 20×103 as a main component and a trifunctional or more polyepoxy compound as a crosslinking agent, and containing substantially no organic solvent. The molar number, mOH, of hydroxyl group contained in a polyalcohol component constituting the polyester is from 0.5 to 0.98 times of the molar number, mCOOH, of carboxyl group contained in a polycarboxylic acid component. The composition has a viscosity at 23° C. of at most 80 Pa·s.
摘要:
The present invention has an object to provide a pressure-sensitive adhesive composition that provides a polyester-based pressure-sensitive adhesive capable of realizing both of heat resistance and adhesive force at high levels and a pressure-sensitive adhesive sheet having a polyester-based pressure-sensitive adhesive. The pressure-sensitive adhesive composition provided by the present invention contains a polyester resin A with Mw of 4×104 to 12×104 and a polyester resin B with Mw of 0.3×104 to 1×104. The ratio (mA:mB) of the number of moles mA and mB of the polyester resins A and B is 1:0.35 to 1:1.4. The pressure-sensitive adhesive composition further contains a crosslinking agent, and has a gel fraction after crosslinking of 30 to 65%.
摘要:
A masking pressure-sensitive adhesive tape includes a substrate and a pressure-sensitive adhesive layer that is provided on at least one side of the substrate and made from a polyester-based pressure-sensitive adhesive composition containing a polyester including at least a lactic acid unit, a dibasic acid unit, and a glycol unit, and a crosslinking agent. The dibasic acid unit includes a dimer acid, the polyester has a weight average molecular weight of 20,000 to 200,000 and a glass transition temperature of −70 to −20° C. as measured using a differential scanning calorimeter at a temperature rise rate of 20° C./minute, the polyester has a hydroxyl value of 1 to 60 mgKOH/g, and the pressure-sensitive adhesive layer has a gel fraction of 40 to 90% by weight.
摘要:
A thermally removable pressure-sensitive adhesive sheet includes a substrate and a pressure-sensitive adhesive layer that is provided on at least one side of the substrate and made from a polyester-based pressure-sensitive adhesive composition containing a polyester including at least a lactic acid unit, a dibasic acid unit, and a glycol unit, a foaming agent, and a crosslinking agent. The dibasic acid unit includes a dimer acid, the polyester has a weight average molecular weight of 20,000 to 200,000 and a glass transition temperature of −70 to −20° C. as measured using a differential scanning calorimeter at a temperature rise rate of 20° C./minute, and the polyester has a hydroxyl value of 1 to 60 mgKOH/g.
摘要翻译:热可去除的压敏粘合片包括基材和压敏粘合剂层,其设置在基材的至少一侧上,并由含有至少包含乳酸的聚酯的聚酯类压敏粘合剂组合物制成 单元,二元酸单元和二元醇单元,发泡剂和交联剂。 二元酸单元包括二聚酸,聚酯的重均分子量为20,000〜200,000,玻璃化转变温度为-70〜-20℃,使用差示扫描量热计,以20℃的升温速度 C. /分,聚酯的羟值为1〜60mgKOH / g。
摘要:
Provided is a release liner which includes a substrate derived from a poly(lactic acid), a biomass-derived plastic; and a releasable cured layer derived from a release agent. The releasable cured layer, even when employing an ultraviolet-curable silicone release agent as the release agent, is satisfactorily curable and exhibits good adhesion to the substrate. The release liner according to the present invention includes a poly(lactic acid) substrate; a release-treated layer present over at least one side of the substrate; and an undercoat layer lying between them. The undercoat layer is present in a mass of coating of typically from 0.1 to 5 g/m2 in solids content. The poly(lactic acid) substrate may contain a modifier. The release agent forming the release-treated layer may be an ultraviolet-curable silicone release agent. The ultraviolet-curable silicone release agent is preferably a cationically polymerizable ultraviolet-curable silicone release agent.