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2 203 803

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Application

2001118434/12, 2001-07-03

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Start date

2001-07-03

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Actual filing date

2001-07-03

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Published

2003-05-10

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Inventor

Maganov R.U.Nekrasov V.I.Vjatchinin M.G.Lesnichij V.F.Injushin N.V.Larionov A.F.

(73)

Holder

Obshchestvo S Ogranichennoj Otvetstvennost'Ju Sibir'"

METHOD FOR MANUFACTURE OF PLASTIC PIPES Russian patent published in 2003 - IPC

Abstract RU 2203803 C2

FIELD: manufacture of plastic pipes. SUBSTANCE: the method consists in extrusion of thermoplastic material with moulding of the profile of the round billet, its calibration and cooling. Then, the round billet is reinforced by winding and polymerization of composite-fibrous material. Moulding of the profile, calibration and cooling of the round billet are carried out in accordance with relation A>Дm-Дc>Б, where A - the maximum value of radial shrinkage of the round billet at cooling; Дm - the outside diameter of the profile moulding of the round billet; Дc - the outside diameter of calibration of the profile of the round billet; Б - the minimum value of radial shrinkage of the round billet at cooling. EFFECT: enhanced durability of the pipe and reliability of the method for its manufacture. 2 dwg

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RU 2 203 803 C2

Authors

Maganov R.U.

Nekrasov V.I.

Vjatchinin M.G.

Lesnichij V.F.

Injushin N.V.

Larionov A.F.

Dates

2003-05-10—Published

2001-07-03—Filed

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