# US 2014/0193204 A1 · Tubbing having a thermoplastic sealing layer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0193204 A1 - Document ID: US20140193204A1 - Status: Published application - Kind: A1 - Application number: 14/206,519 - Filed: 2014-03-12 - Published: 2014-07-10 - Earliest claimed: 2011-09-12 - Assignees: Sika Technology AG - Applicants: Sika Technology AG - Inventors: Ulrich K. WEBER; Klaus MEYER - Web page: https://patentgrep.com/patent/US20140193204A1 ## CPC - E21D 11/385: {Sealing means positioned between adjacent lining members (for joints in foundation structures E02D29/16; for sewers E03F3/04; for building structures in general E04B1/68)} - E21D 11/003: {Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices (E21D11/38 takes precedence)} - E21D 11/08: with preformed concrete slabs {(backfilling the space between the slabs and the rock E21D11/105)} - E21D: SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS (soil-conditioning or soil-stabilising materials C09K17/00; drilling or cutting machines for mining or quarrying E21C; safety devices, transport, rescue, ventilation or drainage E21F) ## Abstract For a tubbing made of concrete for lining a tunnel, such as a traffic tunnel, the tubbing can have a convexly curved outer surface and a concavely curved inner surface opposite the outer surface. The tubbing can be provided with a thermoplastic sealing layer on the outer surface of the concrete tubbing. The thermoplastic sealing layer can also be arranged on all sides of the outside surfaces facing the outer surface. The tubbing can, for example, have a recess that extends around the outer surface in a frame shape, and the sealing layer engages in the recess. ## Claims ### Claim 1 Tubbing for lining a tunnel, comprising: a concrete tubbing having a convexly curved outer surface and a concavely curved inner surface opposite the outer surface; and a thermoplastic sealing layer provided on the convexly curved outer surface of the concrete tubbing, the thermoplastic sealing layer also being arranged on other outside surfaces of the concrete tubbing adjacent the convexly curved outer surface. ### Claim 2 (depends on 1) Tubbing according to claim 1, comprising: a recess that extends around the convexly curved outer surface in a frame shape, the thermoplastic sealing layer engaging in the recess. ### Claim 3 (depends on 1) Tubbing according to claim 1, wherein the thermoplastic sealing layer comprises: a water-swellable profile arranged on a side other than the outside surfaces. ### Claim 4 (depends on 1) Tubbing according to claim 1, comprising: a sealing groove that extends around the outside surfaces, in which a sealing body is arranged. ### Claim 5 (depends on 1) Tubbing according to claim 1, wherein the thermoplastic sealing layer contains thermoplastic polyolefins and/or polyvinyl chloride (PVC). ### Claim 6 (depends on 1) Tubbing according to claim 1, wherein the thermoplastic sealing layer comprises: material selected from the group consisting of: high-density polyethylene (HDPE), medium-density polyethylene (MDPE), low-density polyethylene (LDPE), polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polystyrene (PS), polyvinyl chloride (PVC), polyamide (PA), ethylene-vinyl acetate (EVA), chlorosulfonated polyethylene and thermoplastic polyolefins (TPO). ### Claim 7 (depends on 1) Tubbing according to claim 1, comprising: a sealing coating between the convexly curved outer surface and the thermoplastic sealing layer, wherein this sealing coating is selected from the group consisting of: methacrylate resin, polyester resin, epoxy resin, polyurethane and polyurea. ### Claim 8 (depends on 1) Tubbing according to claim 1, wherein the sealing coating is also arranged at least partially on the outside surfaces. ### Claim 9 (depends on 1) Tubbing according to claim 1, comprising: an adhesive layer between the convexly curved outer surface and the thermoplastic sealing layer. ### Claim 10 (depends on 1) A tunnel structure containing a tubbing according to claim 1. ### Claim 11 (depends on 2) Tubbing according to claim 2, wherein the thermoplastic sealing layer comprises: a water-swellable profile arranged on a side other than the outside surfaces. ### Claim 12 (depends on 11) Tubbing according to claim 11, comprising: a sealing groove that extends around the outside surfaces, in which a sealing body is arranged. ### Claim 13 (depends on 12) Tubbing according to claim 12, wherein the thermoplastic sealing layer contains thermoplastic polyolefins and/or polyvinyl chloride (PVC). ### Claim 14 (depends on 13) Tubbing according to claim 13, wherein the thermoplastic sealing layer comprises: material selected from the group consisting of: high-density polyethylene (HDPE), medium-density polyethylene (MDPE), low-density polyethylene (LDPE), polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polystyrene (PS), polyvinyl chloride (PVC), polyamide (PA), ethylene-vinyl acetate (EVA), chlorosulfonated polyethylene and thermoplastic polyolefins (TPO). ### Claim 15 (depends on 14) Tubbing according to claim 14, comprising: a sealing coating between the convexly curved outer surface and the thermoplastic sealing layer, wherein this sealing coating is selected from the group consisting of: methacrylate resin, polyester resin, epoxy resin, polyurethane and polyurea. ### Claim 16 (depends on 15) Tubbing according to claim 15, wherein the sealing coating is also arranged at least partially on the outside surfaces. ### Claim 17 (depends on 16) Tubbing according to claim 16, comprising: an adhesive layer between the convexly curved outer surface and the thermoplastic sealing layer. ### Claim 18 (depends on 17) A tunnel structure containing a tubbing according to claim 17.