# US 10,479,047 B2 · Foam composite sheet

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- Number: US 10,479,047 B2
- Document ID: US10479047B2
- Status: Granted
- Kind: B2
- Application number: 15/322,569
- Filed: 2015-07-31
- Published: 2017-06-01
- Granted: 2019-11-19
- Earliest claimed: 2014-09-25
- Assignees: Sekisui Chemical Co., Ltd.
- Applicants: Sekisui Chemical Co., Ltd.
- Inventors: Kenichiro Takasu
- Web page: https://patentgrep.com/patent/US10479047B2

## CPC

- B32B 5/18: characterised by features of a layer {of} foamed material
- B29C 35/0866: {using particle radiation}
- B29C 48/022: {characterised by the choice of material}
- B29C 48/08: flexible, e.g. films
- B32B 9/00: Layered products comprising a {layer of a} particular substance not covered by groups B32B11/00 - B32B29/00
- B32B 15/046: {of foam}
- B32B 15/20: comprising aluminium or copper {(B32B15/016 and B32B15/017 take precedence)}
- B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)}
- C09J 7/22: Plastics; Metallised plastics
- C23C 14/20: on organic substrates
- C23C 14/205: {by cathodic sputtering}
- C23C 14/34: Sputtering
- B29C 44/505: {extruding the compound through a flat die (in general B29C48/03)}
- B29C 44/56: After-treatment of articles, e.g. for altering the shape
- B29C 2035/085: {using gamma-ray}
- B29C 2035/0872: {using ion-radiation, e.g. alpha-rays}
- B29C 2035/0877: {using electron radiation, e.g. beta-rays}
- B29K 2023/06: {PE, i.e. polyethylene}
- B29K 2105/0047: {Agents changing thermal characteristics}
- B29K 2105/0061: {Gel or sol}
- B29K 2105/04: cellular or porous
- B29K 2105/046: {with closed cells}
- B29K 2995/0063: Density
- B29K 2995/0097: Thickness
- B29L 2007/007: {Narrow strips, e.g. ribbons, tapes, bands (belts B29L2029/00; tapes as carrier of sound or information B29L2017/008)}
- B29L 2009/008: {metalized, galvanized}
- C09J 2203/326: for bonding electronic components such as wafers, chips or semiconductors
- C09J 2301/302: the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
- C09J 2400/163: in the substrate
- C09J 2423/006: in the substrate
- C09J 2423/046: in the substrate
- Y10T 428/249976: Voids specified as closed
- Y10T 428/249983: As outermost component
- Y10T 428/24999: Inorganic
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)
- C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04)
- B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The foam composite sheet of the present invention comprises a polyolefin resin foam sheet and a metallic thin film provided on at least one surface of the foam sheet, the metallic thin film being formed of a material selected from metals, alloys containing a plurality of metals, and the like, in an amount of deposition of 5 to 1,000 μg/cm2.

## Claims

### Claim 1

A foam composite sheet consisting of a polyolefin resin foam sheet and a metallic thin film provided on at least one surface of the foam sheet, wherein the foam sheet has closed cells and the metallic thin film is formed of aluminum and optionally one or more materials selected from the group consisting of copper, silver, nickel, titanium, stainless steel, a nickel-copper alloy, aluminum oxide, zinc oxide, and titanium nitride in an amount of deposition of 10 to 115.2 μg/cm2.

### Claim 2 (depends on 1)

The foam composite sheet according to claim 1, wherein the metallic thin film is formed of aluminum and optionally one or more materials selected from the group consisting of stainless steel, a nickel-copper alloy, copper, silver, titanium and nickel.

### Claim 3 (depends on 1)

The foam composite sheet according to claim 1, wherein the polyolefin resin foam sheet has a thickness of 0.05 to 1.0 mm.

### Claim 4 (depends on 1)

The foam composite sheet according to claim 1, wherein the polyolefin resin foam sheet has an apparent expansion ratio of 1.0 to 10 cc/g.

### Claim 5 (depends on 1)

The foam composite sheet according to claim 1, wherein the polyolefin resin foam sheet has a gel fraction of 5 to 70 mass %.

### Claim 6 (depends on 1)

The foam composite sheet according to claim 1, wherein the polyolefin resin foam sheet is formed of a foamed resin composition comprising a polyethylene resin.

### Claim 7 (depends on 1)

The foam composite sheet according to claim 1, wherein the metallic thin film is formed by sputtering.

### Claim 8 (depends on 1)

The foam composite sheet according to claim 1, wherein the polyolefin resin foam sheet comprises a thermally conductive filler dispersed therein.

### Claim 9 (depends on 1)

A pressure sensitive adhesive tape comprising a foam composite sheet according to claim 1 and a pressure sensitive adhesive layer provided on at least one surface of the foam composite sheet.