US 12,305,089 B2Granted

Sealing method

AssigneeFUJIFILM Corporation

InventorsTakeshi Umehara, Tetsuro Mitsui, Miyoko Hara, Kana Sasahara, Akio Tamura, Reiko Inushima

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Abstract

An object of the present invention is to provide a sealing method using a cover film where a problem of odor is not likely to occur and quick drying properties and sealability are high. The sealing method according to the present invention is a sealing method that is performed using at least a cover film and a sealing solvent, the cover film including a polymer layer provided on a transparent support, in which the sealing solvent is a solvent including at least one kind selected from the group consisting of an ester, an alcohol, a ketone, an ether, and an aromatic hydrocarbon, in a case where the sealing solvent is an ester, an alcohol, a ketone, or an ether, a boiling point of the sealing solvent is 80° C. to 170° C., and in a case where the sealing solvent is an aromatic hydrocarbon, a boiling point of the sealing solvent is 150° C. to 170° C.

Claims12

Dependent claims

A sealing method for sealing a subject between a substrate and a cover film including a polymer layer provided on a transparent support comprising:

disposing a sealing solvent between the substrate and the cover film, and
laminating the cover film on a surface of the substrate on which the subject is placed such that a surface of the cover film on the polymer layer side faces the substrate, to bond the substrate and the cover film to each other,
wherein the sealing solvent is a solvent including at least one kind selected from the group consisting of an ester having a boiling point of 80° C. to 170° C., an alcohol having a boiling point of 80°° C. to 170° C., a ketone having a boiling point of 80° C. to 170° C., an ether having a boiling point of 80° C. to 170° C., and an aromatic hydrocarbon having a boiling point of 150° C. to 170° C.,
a hydrogen bond element dH1 in a Hansen solubility parameter of the sealing solvent is 2.5 to 15.0, and
a polarity element dP1 in the Hansen solubility parameter of the sealing solvent is 0.5 to 8.0.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/063,483Filed 8 Dec 2022 · continuation
Priority: JP 2020-10225012 Jun 2020
Published: US 2023/0109172 A16 Apr 2023
Granted: 20 May 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification38 codes

C09J 7/30
Adhesives in the form of films or foils: characterised by the adhesive composition
C03C 17/32
With organic material: with synthetic or natural resins
C03C 27/048
Joining glass to metal by means of an interlayer: consisting of an adhesive specially adapted for that purpose
C08F 120/18
Of phenols or of alcohols containing two or more carbon atoms: with acrylic or methacrylic acids