Nitto-denko Corporation

Nitto Belgium Nv

Hakaru Horiguchi

Yuta Shimazaki

Kosuke Yonezaki

Donald Pinxten

Kousuke Yonezaki

Peter Gruyters

Kunimasa Mishima

Provided is a Low-E glass plate protection method capable of preventing or inhibiting Low-E layer alteration. In the protection method, a protective sheet having a substrate and a PSA layer provided to at least one face of the substrate is applied for protection via the PSA layer to a Low-E glass plate having a Low-E layer that comprises a zinc component. The method is characterized by using the protective sheet wherein the PSA layer is formed from a water-dispersed PSA composition and includes less than 850 μg ammonia per gram of PSA layer weight.

Method for protecting low-E glass plate, method for producing glass unit, laminate and protective sheet for low-E glass plate

Provided is a Low-E glass plate protective sheet that can have protective properties for a Low-E glass plate as an object to be protected and can maintain good removability while preventing or inhibiting surface contamination of the object to be protected even when prolongedly adhered thereto. The Low-E glass plate protective sheet is provided. The protective sheet has a PSA layer. The PSA layer comprises at least 95% base polymer by weight.

Protective sheet

Provided is a method for preparing a PSA composition for protecting Low-E glass plates from degradation and corrosion. A PSA composition preparation method is provided for Low-E glass plate protection. The method comprises a step of obtaining an aqueous liquid, and a step of obtaining a polymer containing liquid comprising the aqueous liquid and a polymer. Here, the aqueous liquid satisfies at least (a) having an electrical conductivity below 300 μS/cm or (b) having a chloride ion concentration below 35 μg/mL.

Method for preparing pressure-sensitive adhesive composition, method for producing protective sheet and method for producing glass unit

To provide a method for protecting a Low-E glass plate, the method being capable of preventing or inhibiting alteration of Low-E layers. Provided is a Low-E glass plate protection method. The protection method includes a step of applying a protective sheet to a surface of a Low-E glass plate having a Low-E layer comprising a zinc component. Here, the protective sheet has a PSA layer. The Low-E layer comprises a zinc component. The PSA layer includes an adsorbent capable of adsorbing ammonia.

Method for protecting low-E glass plate, method for producing glass unit and protective sheet for low-E glass plate

Provided is a Low-E glass plate protection method capable of preventing or inhibiting alteration and erosion of Low-E layers. The protection method includes a step of applying a protective sheet to a surface of a Low-E glass plate having a Low-E layer comprising a tin component. Here, the Low-E layer comprises a tin component. The protective sheet has a PSA layer. The PSA layer comprises a phosphorus compound having a P—OR group. Here, R is a hydrogen atom or an organic group.

Low-E glass plate, protective sheet for low-E glass plate and use thereof

Provided is a method for producing a glass unit. The method comprises a step (A) of obtaining a glass plate; a step (B) of applying a protective sheet to one face of the glass plate; an optional step (C) of subjecting the glass plate to at least one process selected from the group consisting of transportation, storage, processing, washing and handling; a step (D) of removing the protective sheet from the glass plate; and a step (E) of assembling a glass unit using the glass plate. The protective sheet comprises a substrate layer, and a PSA layer provided to at least one face of the substrate layer. The PSA layer has a surface hardness of 0.3 MPa or greater.

Method for producing glass unit and pressure-sensitive adhesive sheet

Provided is a method for producing a glass unit. The method comprises a step (A) of obtaining a glass plate comprising a glass substrate and a Low-E layer placed on the glass substrate; a step (B) of applying a protective sheet to the Low-E layer surface of the glass plate; an optional step (C) of subjecting the glass plate to at least one process selected from the group consisting of transportation, storage, processing, washing and handling; a step (D) of removing the protective sheet from the glass plate; and a step (E) of assembling a glass unit using the glass plate. The protective sheet comprises a waterproof layer, and a PSA layer provided to at least one face of the waterproof layer. The PSA layer has a surface hardness of 0.5 MPa or less.

Provided is a Low-E glass plate protection method capable of preventing or inhibiting Low-E layer alteration. The protection method includes a step of applying a protective sheet to a surface of a Low-E glass plate having a Low-E layer comprising a zinc component. Here, the protective sheet has a PSA layer. The Low-E layer comprises a zinc component. The PSA layer includes ammonia and an acid or acid salt capable of forming a counterion to an ammonium ion.

Method for protecting Low-E glass plate, method for producing glass unit, laminate and protective sheet for Low-E glass plate

Provided is a method for producing a glass unit. The method comprises a step (A) of obtaining a glass plate comprising a glass substrate and a Low-E layer placed on the glass substrate; a step (B) of applying a protective sheet to the Low-E layer surface of the glass plate; an optional step (C) of subjecting the glass plate to at least one process selected from the group consisting of transportation, storage, processing, washing and handling; a step (D) of removing the protective sheet from the glass plate; and a step (E) of assembling a glass unit using the glass plate. The protective sheet comprises a substrate layer, and a PSA layer provided to at least one face of the substrate layer. The PSA layer comprises, as a corrosion inhibitor, a surfactant free of sulfur atoms.

Growing community of inventors

Osaka, Japan

Hakaru Horiguchi