Pressure-sensitive adhesive tape suitable for component cutting process
AssigneeNan Ya Plastics Corporation
InventorsTe-Chao Liao, Chun-Che Tsao, Cheng-Hung Chen
Life of this patent
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Abstract
A pressure-sensitive adhesive tape suitable for component cutting process is provided. The pressure-sensitive adhesive tape includes a release film layer, an adhesive layer, and a support base layer that are stacked in sequence. Based on the adhesive layer having a total weight percent of 100 wt %, the adhesive layer includes 40-50 wt % of an acrylic resin, 40-65 wt % of an epoxy monomer, 0.05-0.5 wt % of a hardener, and 0.5-1.0 wt % of an initiator. The adhesive layer has a first acid value before being exposed to an ultraviolet light, the adhesive layer has a second acid value after being exposed to the ultraviolet light, and the second acid value is smaller than the first acid value.
Claims8
A pressure-sensitive adhesive tape, including:
- a release film layer;
- an adhesive layer formed on a surface of the release film layer, wherein the adhesive layer includes 40-50 wt % of an acrylic resin, 40-65 wt % of an epoxy monomer, 0.05-0.5 wt % of a hardener, and 0.5-1.0 wt % of an initiator based on the adhesive layer having a total weight percent of 100 wt %;
- and wherein the acrylic resin has a chemical structure of the following formula (I),
- formula (I);
- wherein n=3,000 to 5,000;
- and
- a support base layer formed on a surface of the adhesive layer opposite to the release film layer;
- wherein the adhesive layer has a first acid value before being exposed to a ultraviolet light, the adhesive layer has a second acid value after being exposed to the ultraviolet light, and the second acid value is smaller than the first acid value:
- wherein the first acid value is between 5 mg KOH/g and 20 mg KOH/g, and the second acid value is between 1 mg KOH/g and 4 mg KOH/g;
- wherein a wavelength of the ultraviolet light is between 300 nm and 380 nm, an exposure energy of the ultraviolet light to the adhesive layer is between 100 mJ/cm2 and 300 mJ/cm2, and an exposure time of the ultraviolet light to the adhesive layer is between 0.05 minutes to 5.0 minutes.
Dependencies are inferred from the claim text.