# US 8,784,962 B2 · Elastomeric low temperature insulation

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- Number: US 8,784,962 B2
- Document ID: US8784962B2
- Status: Granted
- Kind: B2
- Application number: 12/986,560
- Filed: 2011-01-07
- Published: 2011-07-07
- Granted: 2014-07-22
- Earliest claimed: 2010-01-07
- Assignees: Armacell Enterprise GmbH
- Applicants: Jürgen Weidinger; Steve Weiss
- Inventors: Jürgen Weidinger; Steve Weiss
- Web page: https://patentgrep.com/patent/US8784962B2

## CPC

- F16L 59/141: {in which the temperature of the medium is below that of the ambient temperature}
- B32B 1/08: Tubular products
- B32B 5/02: characterised by structural features of a {fibrous or filamentary} layer {(layer formed of metallic wires B32B15/02; layer formed of natural mineral fibres B32B19/02; layer formed of wood fibres B32B21/02)}
- B32B 5/022: {Non-woven fabric}
- B32B 5/18: characterised by features of a layer {of} foamed material
- B32B 5/245: {another layer next to it being a foam layer}
- B32B 5/32: {at least two} layers being foamed {and next to each other}
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 15/046: {of foam}
- B32B 15/08: of synthetic resin
- B32B 15/20: comprising aluminium or copper {(B32B15/016 and B32B15/017 take precedence)}
- B32B 25/08: of synthetic resin
- B32B 25/12: comprising natural rubber
- B32B 25/14: comprising {synthetic rubber copolymers (B32B25/18 and B32B25/20 take precedence)}
- B32B 25/16: comprising polydienes {homopolymers} or poly-halodienes {homopolymers (B32B25/12 takes precedence)}
- B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)}
- B32B 29/007: {next to a foam layer}
- B32B 29/02: next to a fibrous or filamentary layer
- C08J 9/06: by a chemical blowing agent
- B32B 2262/101: Glass fibres
- B32B 2262/108: Rockwool fibres
- B32B 2266/0207: Materials belonging to B32B25/00
- B32B 2266/0228: Aromatic vinyl resin, e.g. styrenic (co)polymers
- B32B 2266/0278: Polyurethane
- B32B 2266/08: Closed cell foam
- B32B 2274/00: Thermoplastic elastomer material
- B32B 2307/102: Insulating
- B32B 2307/304: Insulating
- B32B 2307/50: having particular mechanical properties
- B32B 2307/546: Flexural strength; Flexion stiffness
- B32B 2307/558: Impact strength, toughness
- B32B 2307/56: Damping, energy absorption
- B32B 2307/702: Amorphous
- B32B 2307/712: Weather resistant
- B32B 2307/72: Density
- B32B 2307/7246: Water vapor barrier
- B32B 2307/732: Dimensional properties
- B32B 2457/00: Electrical equipment
- B32B 2581/00: Seals; Sealing equipment; Gaskets
- B32B 2597/00: Tubular articles, e.g. hoses, pipes
- C08J 2201/03: Extrusion of the foamable blend
- C08J 2205/052: Closed cells, i.e. more than 50% of the pores are closed
- C08J 2323/16: Ethene-propene or ethene-propene-diene copolymers
- Y10T 156/10: Methods of surface bonding and/or assembly therefor
- Y10T 428/1376: Foam or porous material containing
- Y10T 428/1393: Multilayer [continuous layer]
- Y10T 428/249953: Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T 428/249976: Voids specified as closed
- Y10T 428/249977: Specified thickness of void-containing component [absolute or relative], numerical cell dimension or density
- Y10T 428/249981: Plural void-containing components
- Y10T 428/24999: Inorganic
- F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The present invention relates to a multilayer insulation based on expandable and crosslinkable elastomeric material with improved low temperature resistance and flexibility, the process for manufacturing of such material and system, and the use of such material and system.

## Claims

### Claim 1

A system comprising a pipe or a tank and an elastomeric low temperature insulation material for insulating the pipe or the tank, the elastomeric low temperature insulation material comprising
(a) at least one expanded elastomeric insulation foam layer made from an expandable and crosslinkable copolymer, wherein the foam layer has a first and a second opposed surface, wherein the copolymer comprises polyethylene and polypropylene units;
(b) at least one additional insulation layer applied to the first surface of the foam layer; and
(c) a protective layer comprising a metal foil, wherein the protective layer is applied on the second surface of the foam layer such that the protective layer is disposed between the foam layer and the pipe or the tank, and wherein the foam layer comprises ripples, thereby creating a hollow space and a decoupling of the elastomeric low temperature insulation material from the pipe or the tank.

### Claim 2 (depends on 1)

The system according to claim 1 wherein the copolymer comprises a poly(ethylene-propylene-diene).

### Claim 3 (depends on 1)

The system according to claim 1 wherein the copolymer has a closed cell content greater than 95%.

### Claim 4 (depends on 1)

The system according to claim 1 wherein the foam layer has a density of 10 to 100 kg/m3.

### Claim 5 (depends on 1)

The system according to claim 1 wherein the copolymer has a thermal conductivity below 0.08 Wm−1K−1.

### Claim 6 (depends on 1)

The system according to claim 1, wherein the at least one additional insulation layer comprises an expanded polymer.

### Claim 7 (depends on 1)

The system according to claim 1, wherein the at least one additional insulation layer comprises an expanded elastomer with a closed cell content more than 95%, a density of 40 to 200 kg/m3, and a thermal conductivity lower than 0.04 Wm−1K−1.

### Claim 8 (depends on 1)

The system according to claim 1 wherein the metal foil is an aluminium foil.

### Claim 9 (depends on 8)

The system according to claim 8 where the aluminium foil is adhered to the second surface of the foam layer.

### Claim 10 (depends on 9)

A system according to claim 9, wherein the elastomeric low temperature insulation material is manufactured by a process comprising a lamination process.

### Claim 11 (depends on 1)

A system according to claim 1, wherein the elastomeric low temperature insulation material is manufactured by a process comprising a continuous extrusion process.

### Claim 12 (depends on 1)

The system according to claim 1, wherein the elastomeric low temperature insulation material is applied for thermal and/or acoustic insulation and/or acoustic and/or vibration damping.