# US 10,483,732 B2 · Multilayer containment and protection tube for conduits, cables and the like

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- Number: US 10,483,732 B2
- Document ID: US10483732B2
- Status: Granted
- Kind: B2
- Application number: 15/622,919
- Filed: 2017-06-14
- Published: 2017-12-21
- Granted: 2019-11-19
- Earliest claimed: 2016-06-15
- Assignees: Tubigomma Deregibus S.R.L.
- Applicants: Tubigomma Deregibus S.R.L.
- Inventors: Andrea Deregibus
- Web page: https://patentgrep.com/patent/US10483732B2

## CPC

- H02G 3/0481: {with a circular cross-section (H02G3/0468, H02G3/0475 take precedence)}
- B32B 1/08: Tubular products
- B32B 15/02: {Layer formed of wires, e.g. mesh}
- B32B 15/08: of synthetic resin
- B32B 15/082: comprising vinyl resins; comprising acrylic resins
- B32B 15/085: comprising polyolefins
- B32B 15/14: next to a fibrous or filamentary layer
- B32B 25/00: Layered products comprising {a layer of} natural or synthetic rubber {(fibrous or filamentary layer made of a natural or synthetic rubber B32B5/02; particulate layer made of a natural or synthetic rubber B32B5/16; foamed layer made of a natural or synthetic rubber B32B5/18)}
- B32B 25/02: with fibres or particles {being present as additives in the layer}
- B32B 25/08: of synthetic resin
- B32B 25/16: comprising polydienes {homopolymers} or poly-halodienes {homopolymers (B32B25/12 takes precedence)}
- B32B 27/00: Layered products comprising {a layer of} synthetic resin {(fibrous or filamentary layer made of a synthetic resin B32B5/02; particulate layer made of a synthetic resin B32B5/16; foamed layer made of a synthetic resin B32B5/18)}
- B32B 27/12: next to a fibrous or filamentary layer
- B32B 27/18: characterised by the use of special additives
- B32B 27/20: using fillers, pigments, thixotroping agents
- B32B 27/304: {comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF}
- B32B 27/32: comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)}
- B32B 27/322: {comprising halogenated polyolefins, e.g. PTFE}
- B32B 33/00: Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
- F16L 11/081: {comprising one or more layers of a helically wound cord or wire (in combination with braided layers F16L11/088)}
- F16L 11/085: {comprising one or more braided layers (in combination with layers of a helically wound core or wire F16L11/088)}
- F16L 57/02: against cracking or buckling
- F16L 57/06: against wear (F16L57/04 takes precedence)
- B32B 2250/00: Layers arrangement
- B32B 2250/04: 4 layers
- B32B 2250/05: 5 or more layers
- B32B 2250/24: All layers being polymeric
- B32B 2264/00: Composition or properties of particles which form a particulate layer or are present as additives
- B32B 2264/108: Carbon, e.g. graphite particles
- B32B 2307/202: Conductive
- B32B 2307/206: Insulating
- B32B 2307/21: Anti-static
- B32B 2307/402: Coloured
- B32B 2307/4026: within the layer by addition of a colorant, e.g. pigments, dyes
- B32B 2307/406: Bright, glossy, shiny surface
- B32B 2307/538: Roughness
- B32B 2307/726: Permeability to liquids, absorption
- B32B 2307/7265: Non-permeable
- B32B 2597/00: Tubular articles, e.g. hoses, pipes
- H02G: INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL

## Abstract

A multilayer containment and protection tube for conduits, cables and the like, includes an inner layer made of polymeric material, which is electrically at least antistatic, with a smooth internal surface, which forms a duct for supporting conduits or cables. The tube further includes one or more intermediate layers of electrically at least antistatic reinforcement, an outer layer made of electrically at least antistatic polymeric material, and a covering and finishing layer, which is electrically at least antistatic.

## Claims

### Claim 1

A multilayer containment and protection tube for conduits, cables and the like, comprising
an inner layer made of polytetrafluoroethylene PTFE, which is electrically at least antistatic, with a smooth internal surface, which forms a duct for supporting conduits or cables,
one or more intermediate layers of electrically at least antistatic reinforcement,
an outer layer made of electrically at least antistatic polymeric material, and
a covering and finishing layer, which is electrically at least antistatic, wherein said covering and finishing layer is made of thermoplastic material, wherein said thermoplastic material of said covering and finishing layer is ultrahigh molecular weight polyethylene UHMWPE, and wherein said covering and finishing layer has a substantially smooth and glossy external surface.

### Claim 2 (depends on 1)

The multilayer tube according to claim 1, wherein said inner layer made of polymeric material is made of a fluorinated polymer selected among FEP, MFA, PFA, ECTFE, PVDF and PTFE.

### Claim 3 (depends on 1)

The multilayer tube according to claim 1, wherein said inner layer made of polymeric material is made of thermoplastic polymer.

### Claim 4 (depends on 1)

The multilayer tube according to claim 1, wherein said inner layer is made of ultrahigh molecular weight thermoplastic polymer UHMWPE.

### Claim 5 (depends on 1)

The multilayer tube according to claim 1, wherein said inner layer is a continuous extruded tubular element.

### Claim 6 (depends on 1)

The multilayer tube according to claim 1, wherein said inner layer is electrically conducting.

### Claim 7 (depends on 1)

The multilayer tube according to claim 1, wherein said one or more intermediate reinforcement layers comprise at least one textile or metallic reinforcement layer.

### Claim 8 (depends on 1)

The multilayer tube according to claim 1, wherein said one or more intermediate reinforcement layers comprise two textile or metallic reinforcement layers.

### Claim 9 (depends on 8)

The multilayer tube according to claim 8, wherein a filler layer made of elastomeric material is interposed between said two textile or metallic reinforcement layers.

### Claim 10 (depends on 1)

The multilayer tube according to claim 1, wherein said one or more intermediate reinforcement layers comprise a reinforcement spiral.

### Claim 11 (depends on 10)

The multilayer tube according to claim 10, wherein said reinforcement spiral is made of metallic material.

### Claim 12 (depends on 10)

The multilayer tube according to claim 10, wherein said reinforcement spiral is made of thermoplastic material.

### Claim 13 (depends on 1)

The multilayer tube according to claim 1, wherein said outer layer is electrically conducting.

### Claim 14 (depends on 1)

The multilayer tube according to claim 1, wherein said thermoplastic material of said covering and finishing layer is polyethylene.

### Claim 15 (depends on 1)

The multilayer tube according to claim 1, wherein said covering and finishing layer made of thermoplastic UHMWPE is electrically conducting.

### Claim 16 (depends on 1)

The multilayer tube according to claim 1, wherein said covering and finishing layer made of UHMWPE is completely black.

### Claim 17 (depends on 1)

The multilayer tube according to claim 1, wherein said covering and finishing layer made of UHMWPE is constituted by a matrix provided with uniformly dispersed electrically conducting bridges.

### Claim 18 (depends on 1)

The multilayer tube according to claim 1, wherein said covering and finishing layer made of UHMWPE is marbled, with a carbon filler that gives it a substantially dark color.