Pressure-sensitive adhesive product
AssigneeNitto Denko Corporation
InventorsHiroshi WADA, Akiko TAKAHASHI
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Abstract
Provided is a pressure-sensitive adhesive (PSA) product having specifications in which the level of volatile organic compound emissions has been minimized, and effectively displaying those specifications. The PSA product includes a PSA layer having an adhesive face capable of attaching to an adherend, and a backing sheet disposed on a back face of the PSA layer. The PSA layer produces toluene emissions of at most 20 μg/g and produces total volatile organic compound emissions of at most 300 μg/g. The backing sheet has a mark in a color selected from green and blue displayed on a back face thereof.
Claims13
A method for manufacturing, a pressure-sensitive adhesive product comprising the steps of:
- preparing a water-dispersed acrylic polymer in the form of an emulsion of an acrylic polymer dispersed in water;
- preparing an emulsion of a tackifying resin containing substantially no aromatic hydrocarbon solvent;
- preparing a water-dispersed pressure-sensitive adhesive composition comprising the water-dispersed acrylic polymer and the emulsion of the tackifying resin;
- forming a pressure-sensitive adhesive layer from the water-dispersed pressure-sensitive adhesive composition on a front face of a backing sheet having the front face and an opposing back face;
- and
- displaying, a mark in green and/or blue on the hack face of the hacking sheet;
- wherein
- the pressure-sensitive adhesive layer has an adhesive face and an opposing back face, wherein the adhesive face is capable of attaching to an adherend, and the backing sheet is disposed on the back face of the pressure-sensitive adhesive layer, and
- the pressure-sensitive adhesive layer produces toluene emissions when heated at 80° C. for 30 minutes of at most 20 μg per gram of the pressure-sensitive adhesive layer and produces total volatile organic compound emissions when heated at 80° C. for 30 minutes of at most 300 μg per gram of the pressure-sensitive adhesive layer.
Dependencies are inferred from the claim text.