Nitto-denko Corporation

Arakawa Chemical Industries, Ltd.

Kenichi Nishikawa

Shinji Inokuchi

Yoshio Nakagawa

Tetsuya Hirose

Eiichi Imoto

Takayuki Shimada

Youzou Yano

Yasunori Yamamoto

Takumi Takahashi

Ryuuichi Kabutoya

Chihiro Yoshida

Takuma Ogawa

Yoshihiro Okada

Akihiro Yamazaki

Toru Higashimoto

Shota Tanaka

Yuki Hashimoto

Keita Kume

A ventilation component () includes a supporting portion (), a gas-permeable membrane (), and a sealing member (). The supporting portion () has a ventilation path () and an annular surface (). When the ventilation component () is attached to a housing (), the ventilation path () extends in a direction perpendicular to an opening plane of an opening (), and extends through the supporting portion (). The annular surface () faces an outer surface () of the housing (), and surrounds the ventilation path () in plan view. The gas-permeable membrane () closes the ventilation path () in a ventilatable manner. The gas-permeable membrane () allows a gas to pass therethrough in a thickness direction of the gas-permeable membrane (). The sealing member () is sandwiched between the outer surface () of the housing () and the annular surface () to seal a gap between the outer surface () of the housing () and the annular surface (). The sealing member () includes at least one selected from the group consisting of a pressure-sensitive adhesive, an adhesive, and a cured product of an adhesive.

Ventilation component

A surface-protective PSA sheet capable of reducing adherend damage and well maintaining appearance, etc is provided. The surface-protective PSA sheet capable of reducing adherend damage and well maintaining appearance, etc., comprises a surface layer, a resin substrate layer and a PSA layer, and has a multilayer structure with the resin substrate layer placed between the surface layer and the PSA layer, wherein the surface layer is a layer obtainable by curing a heat-curable composition comprising the following components:

Pressure-sensitive adhesive sheet for surface protection

Provided is a PSA sheet that shows high peel strength to low polar adherends while having excellent flexibility. This invention provides a PSA sheet that comprises a PSA layer (A) constituting an adhesive face and a viscoelastic layer (B) supporting the PSA layer (A). In the PSA sheet, the viscoelastic layer (B) comprises hollow particles or have bubbles. The PSA layer (A) comprises an acrylic polymer (a) as the base polymer. The copolymerization ratio of an acidic group-containing monomer in the acrylic polymer (a) is 5% by weight or lower.

Pressure-sensitive adhesive sheet

[Problem] To provide an adhesive sheet having a surface sliding property and stainproof property. [Means for solving] An adhesive sheet is one that comprises at least a substrate and an adhesive layer, a static friction coefficient of the substrate is 0.05 or more and 1.50 or less, and an absolute value of a &#x394;L* value of the substrate is 0.01 or more and 45.00 or less. A load at a time of 5% elongation of the substrate is preferably 1 N/cm or more and 15 N/cm or less. And a stress relaxation rate of the substrate by elongating to 10%, stopping the elongation at that state and after lapsing 600 seconds is preferably 40% or more and 100% or less.

Adhesive sheet

A PSA sheet is provided, having an adhesive face formed of an acrylic PSA layer comprising an acrylic polymer. The PSA sheet has a peel strength of 5 N/10 mm or greater. The peel strength is measured as such that the adhesive face is directly adhered to an ethylene-propylene-diene rubber surface and after 20 minutes, peeled in the 180&#xb0; direction at a tensile speed of 50 mm/min.

Pressure-sensitive adhesive sheet and use thereof

A pressure-sensitive adhesive composition is provided for forming an acrylic pressure-sensitive adhesive that constitutes an adhesive face. The pressure-sensitive adhesive composition comprises an amino group-containing (meth)acrylate as its monomeric component. The amino group-containing (meth)acrylate accounts for 5% by mass or more of all monomeric components of the pressure-sensitive adhesive composition.

Pressure-sensitive adhesive composition

This invention provides a PSA sheet comprising a PSA layer (A) constituting an adhesive face and a viscoelastic layer (B) supporting the PSA layer (A). The PSA layer (A) comprises, as a base polymer (A), a block copolymer of a monovinyl-substituted aromatic compound and a conjugated diene compound. The base polymer (A) comprises 30% by mass or more of a diblock copolymer. The viscoelastic layer (B) has a thickness of 200 &#x3bc;m or larger.

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Ibaraki, Japan

Kenichi Nishikawa