# US 12,193,153 B2 · Multilayer body

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- Number: US 12,193,153 B2
- Document ID: US12193153B2
- Status: Granted
- Kind: B2
- Application number: 17/317,004
- Filed: 2021-05-11
- Published: 2021-09-02
- Granted: 2025-01-07
- Earliest claimed: 2018-11-20
- Assignees: Mitsui Mining & Smelting Co., Ltd.
- Applicants: Mitsui Mining & Smelting Co., Ltd.
- Inventors: Rintaro Ishii; Toshimi Nakamura; Yoshinori Matsuura
- Web page: https://patentgrep.com/patent/US12193153B2

## CPC

- H05K 1/0271: {Arrangements for reducing stress or warp in rigid printed circuit boards, e.g. caused by loads, vibrations or differences in thermal expansion}
- H05K 1/09: Use of materials for the {conductive, e.g. } metallic pattern
- B32B 15/04: comprising metal as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a bituminous or tarry layer B32B11/08; next to a water-setting substance layer B32B13/06; next to a glass layer B32B17/061; next to a cellulosic plastic layer B32B23/042)}
- B32B 17/06: comprising glass as the main or only constituent of a layer, next to another layer of a specific {material}
- B32B 17/061: {of metal}
- H05K 3/4682: {Manufacture of core-less build-up multilayer circuits on a temporary carrier or on a metal foil}
- H05K 2203/016: Temporary inorganic, non-metallic carrier, e.g. for processing or transferring
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM

## Abstract

There is provided a laminate that can suppress the warpage of a laminated product when used for the manufacture of the laminated product. This laminate includes a float glass substrate having a top surface and a bottom surface; and a metal layer provided on the top surface side of the float glass substrate.

## Claims

### Claim 1

A laminate comprising
a float glass substrate having a top surface and a bottom surface,
wherein the top surface is defined as a surface not in contact with a molten metal during the formation of the float glass substrate, and the bottom surface is defined as a surface in contact with a molten metal during the formation of the float glass substrate;
a release layer on the top surface side of the float glass substrate; and
a metal layer provided on the release layer opposite the float glass substrate,
wherein the release layer is composed of
an organic release layer,
an inorganic release layer, or
both an organic release layer and an inorganic release layer,
wherein the inorganic release layer is composed of at least one selected from the group consisting of carbon, silicon and silicon carbide.

### Claim 2 (depends on 1)

The laminate according to claim 1, wherein the float glass substrate is a soda lime glass substrate.

### Claim 3 (depends on 2)

The laminate according to claim 2, wherein the soda lime glass substrate is a chemically strengthened glass substrate.

### Claim 4 (depends on 3)

The laminate according to claim 3, wherein the chemically strengthened glass substrate has a depth of element replacement based on chemical strengthening treatment of 1 μm or more and 50 μm or less.

### Claim 5 (depends on 1)

The laminate according to claim 1, wherein the float glass substrate has a thickness of 3 mm or less.

### Claim 6 (depends on 1)

The laminate according to claim 1, wherein the metal layer has a thickness of 0.1 mm or less.

### Claim 7 (depends on 1)

The laminate according to claim 1, wherein the metal layer comprises a metal M, wherein the M is a metal other than an alkali metal and an alkaline earth metal.