US 2024/0107731 A1 · MATTE-TYPE ELECTROMAGNETIC INTERFERENCE SHIELDING FILM COMPRISING BIO-BASED COMPONENT AND PREPARATION METHOD THEREOF

Abstract

The present disclosure provides a matte-type electromagnetic interference shielding film including bio-based components, which includes a bio-based insulating layer, a bio-based adhesive layer, a metal layer, and a bio-based electrically conductive adhesive layer. The matte-type electromagnetic interference shielding film including the bio-based component of the present disclosure has a matte appearance and high bio-based content and has the advantages of good surface insulation, high surface hardness, good chemical resistance, high shielding performance, good adhesion strength, low transmission loss, high transmission quality, good operability, high heat resistance, and the inner electrically conductive adhesive layer with long shelf life and storage life. The present disclosure further provides a preparation method thereof.

Claims20

Dependent claims

A matte-type electromagnetic interference shielding film, comprising bio-based components, comprising:

a bio-based electrically conductive adhesive layer with a thickness of 3 to 50 μm and containing a bio-based resin and a petrochemical-based resin;
a metal layer having a thickness of 0.1 to 15 μm, which is a plated metal layer or a porous metal layer and is formed on the bio-based electrically conductive adhesive layer;
and
a bio-based insulating layer containing a bio-based resin and a petrochemical-based resin with a thickness of 2 to 50 μm, which is formed on the metal layer, allowing the metal layer to be located between the bio-based insulating layer and the bio-based electrically conductive adhesive layer,
wherein the bio-based insulating layer has a first surface and a second surface being opposite to the first surface and facing towards the metal layer, and the first surface and the second surface have different surface roughness Rz which are between 0.001 and 10 μm;
wherein the matte-type electromagnetic interference shielding film contains a bio-based content of 20-100%, by the ratio of the biomass-derived carbon to the petroleum-derived carbon, according to ASTM D6866-12.

3 more elements

A preparation method for a matte-type electromagnetic interference shielding film comprising bio-based component, comprising:

after forming a bio-based insulating layer on a support layer, curing the bio-based insulating layer under a condition of 50° C. to 180° C.;
forming a plated metal layer on the bio-based insulating layer by using one of selected from vacuum sputtering, evaporation deposition, chemical plating and electroplating;
forming a bio-based electrically conductive adhesive layer on the plated metal layer, allowing the plated metal layer to be located between the bio-based insulating layer and the bio-based electrically conductive adhesive layer;
and
laminating a release layer on the bio-based electrically conductive adhesive layer.

2 more elements

A preparation method of a matte-type electromagnetic interference shielding film comprising bio-based component, comprising:

after forming a bio-based insulating layer on a support layer, curing the bio-based insulating layer under a condition of 50° C. to 180° C.;
forming a bio-based adhesive layer on a porous metal layer by using a coating method or a transfer method;
contacting and laminating the bio-based insulating layer and the bio-based adhesive layer, allowing the bio-based adhesive layer to be located between the bio-based insulating layer and the porous metal layer;
forming a bio-based electrically conductive adhesive layer on the porous metal layer;
and
laminating a release layer on the bio-based electrically conductive adhesive layer.

3 more elements

Dependencies are inferred from the claim text.

Matte-type electromagnetic interference shielding film comprising bio-based component and preparation method thereof

Life of this patent

Matte-type electromagnetic interference shielding film comprising bio-based component and preparation method thereof

Life of this patent

Abstract

Claims20