Nitto-denko Corporation

Kansai Paint Company, Ltd.

Nao Wakayama

Takeshi Igarashi

Toshitaka Suzuki

Osamu Degawa

Masakazu Kato

Yoshikuni Hirano

Takuro Kanezaki

A protection sheet is provided for application to a vehicle window plate to protect the window plate. Protection sheet includes a substrate and a PSA layer provided on one surface of substrate. Protection sheet has a 30-minute peel strength (S1) of less than 0.10 N/20 mm and a 48-hour peel strength (S2) of 0.05 N/20 mm or greater when applied to a glass plate by a wet application method where water is provided to the surface of the glass plate and protection sheet is press-bonded to the glass plate while pushing the water present between the glass plate surface and PSA layer to the outside of the bonding area.

Protection sheet for vehicle window plate

The present invention provides a paint film protection sheet comprising a support substrate and a PSA layer placed on the support substrate. The PSA constituting the PSA layer comprises a non-crosslinked rubber-based polymer as a base polymer, a tackifier resin (T) having a softening point of 120&#xb0; C. or above, and a tackifier resin (T) having a softening point below 120&#xb0; C. The mass ratio (T/T) of the tackifier resin (T) content relative to the tackifier resin (T) content has a value of 1.0 or larger and 30 or less.

Paint film protection sheet

Growing community of inventors

Osaka, Japan

Nao Wakayama