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US 12,370,773 B2Granted
Insulation sheet for motor, and method for producing insulation sheet for motor
AssigneeNitto Shinko Corporation
InventorsYuka Shirasaki, Yoshinori Kakichi, Naoto Tanonaka
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Abstract
An insulation sheet for a motor according to present invention includes a first resin film layer and a second resin film layer that is laminated on at least one surface of the first resin layer via an adhesive buyer, in which the adhesive layer includes an acrylic polymer and a trimethylolpropane-tolylenediisocyanate trimer adduct, and has a gel fraction of 70% or lead.
Claims4
An insulation sheet for a motor comprising:
- a first resin film layer;
- and
- a second resin film layer that is laminated on at least one surface of the first resin layer via an adhesive layer;
- wherein
- the adhesive layer comprises an acrylic polymer and a trimethylolpropane-tolylenediisocyanate trimer adduct, and
- a gel fraction of the adhesive layer is 70% or less.
3 more elements
A method for producing an insulation sheet for a motor comprising:
- a lamination step of laminating a second resin film layer on at least one surface of a first resin film layer via an adhesive layer;
- and
- a curing step of curing the adhesive layer, wherein
- the adhesive layer comprises an acrylic polymer and a trimethylolpropane-tolylenediisocyanate trimer adduct, and
- in the curing step, curing at room temperature is performed to cause a gel fraction of the adhesive layer to be 70% or less.
2 more elements
Dependencies are inferred from the claim text.