# US 9,039,403 B2 · Extrusion line for producing peroxide-cross-linked polyethylene pipes

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 9,039,403 B2
- Document ID: US9039403B2
- Status: Granted
- Kind: B2
- Application number: 14/140,936
- Filed: 2013-12-26
- Published: 2014-04-17
- Granted: 2015-05-26
- Earliest claimed: 2010-01-23
- Assignees: INOEX GmbH
- Applicants: Inoex GmbH
- Inventors: Jörg Schmuhl; Martin Deters
- Web page: https://patentgrep.com/patent/US9039403B2

## CPC

- B29C 48/0018: {combined with shaping by orienting, stretching or shrinking, e.g. film blowing (B29C48/0017 takes precedence)}
- B29C 35/10: for articles of indefinite length
- B29C 48/0017: {combined with blow-moulding or thermoforming}
- B29C 48/0022: {combined with cutting}
- B29C 48/08: flexible, e.g. films
- B29C 48/09: Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
- B29C 48/901: {of hollow bodies}
- B29C 48/908: {characterised by calibrator surface, e.g. structure or holes for lubrication, cooling or venting}
- B29C 48/91: Heating, e.g. for cross linking
- B29C 48/9105: {of hollow articles}
- B29C 48/911: {Cooling}
- B29C 48/92: Measuring, controlling or regulating
- B29C 55/22: of tubes {(B29C61/08 takes precedence)}
- B29C 48/00: Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor (extrusion blow-moulding B29C49/04)
- B29C 48/885: External treatment, e.g. by using air rings for cooling tubular films
- B29C 48/912: {of tubular films}
- B29C 2035/0822: {using IR radiation}
- B29C 2948/92123: Diameter or circumference
- B29C 2948/92428: Calibration, after-treatment, or cooling zone
- B29C 2948/92514: Pressure
- B29C 2948/9259: Angular velocity
- B29C 2948/92619: Diameter or circumference
- B29C 2948/92647: Thickness
- B29C 2948/92904: Die; Nozzle zone
- B29C 2948/92923: Calibration, after-treatment or cooling zone
- B29K 2023/06: {PE, i.e. polyethylene}
- B29K 2105/101: {Oriented}
- B29K 2105/24: crosslinked or vulcanised
- B29K 2105/246: {Uncured, e.g. green}
- B29L 2023/00: Tubular articles (B29L2024/00 takes precedence {; catheters B29L2031/7542})
- B29L 2023/22: {Tubes or pipes, i.e. rigid (bent tubes not for use as pipe couplings B29L2023/004)}
- 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)
- 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

## Abstract

An extrusion line for the production of peroxide cross-linked polyethylene pipes includes a cross-linking oven (5, 13) having an actuated deflection roller (7). The cross-linking oven has a first heating section (A) that extends from an inlet to said deflection roller (7) and a second heating section (B) that extends from said deflection roller to an outlet. An element is provided for adjusting a height of the deflection roller (7) and an angle of the first and second heating sections (A, B) relative to a horizontal plane.

## Claims

### Claim 1

An extrusion line for the production of peroxide cross-linked polyethylene pipes, comprising:
a cross-linking oven (5, 13) having an actuated deflection roller (7), wherein said cross-linking oven furthermore has a first heating section (A) that extends from an inlet to said deflection roller (7) and a second heating section (B) that extends from said deflection roller to an outlet; and
means for adjusting a height of said deflection roller (7) and an angle of said first and second heating sections (A, B) relative to a horizontal plane.

### Claim 2 (depends on 1)

An extrusion line according to claim 1, which comprises further means for linking the adjustments of the height of said deflection roller (7) and the angle of said first and second heating sections (A, B).