EXTRUSION LINES FOR 5-LAYERS X-PE PIPES

Product catalog summary

Project Overview
The design choice for the extrusion lines of 5-layer X-PE pipes focuses on a spiral flow distribution scheme. This ensures uniformity and consistent thickness distribution across each layer, regardless of polymer viscosity during extrusion. This design eliminates the need for operator adjustments to maintain pipe quality under varying extrusion conditions.

Co-extrusion Head Design
The co-extrusion head for 5-layer PEX pipes, with diameters ranging from 12 to 63 mm, utilizes a parallel spiral design instead of traditional concentric cylinders. This approach achieves several benefits:

Reduction in head dimensions and flow channel length.
Lower material consumption during cleaning.
Reduced melt pressure during extrusion.
Optimized flow channel orientation and development.
Simplified construction.

The head can be fed by three to five extruders, allowing for material and color differentiation. A flow valve is included for cases where one extruder feeds two channels, facilitating easy material distribution adjustments.

Technical Specifications
The extrusion line includes:

Two main extruders (EA 60 LD 33:1) for outer and inner PEX-B layers, equipped with 3-component gravimetric dosing units.
One co-extruder (EA 35 LD 28:1) for intermediate bonding layers, with a 1-component gravimetric dosing unit.
One co-extruder (EA 35 LD 28:1) for the central barrier layer, also with a 1-component gravimetric dosing unit.

The typical pipe structure consists of PEX-B, bonding agent, EVOH (oxygen barrier), bonding agent, and PEX-B layers. Bonding layers are 50 my thick, and the barrier layer is 100 my thick. The extrusion system ensures precision control within 1%. The line's output is 300 kg/h, and it can also process standard HDPE pipes.

Barrier Layer Efficiency
The central barrier layer, with a thickness of 100 my, ensures oxygen permeability is below the DIN 4726 standard limit of 0.1 g/m2 per day at 40°C. The barrier's efficiency is influenced by layer thickness and operating temperature.

Contact Information
AMUT S.p.A., 28100 NOVARA (Italy) - Via Cameri, 16
Phone: +39 0321 6641 - Fax: +39 0321 474200
Email: [email protected] - Website: www.amut.it
Quality Certification since 1995

Catalog excerpts

EXTRUSION LINES FOR 5-LAYERS X-PE PIPES-1

Linee di estrusione per Tubo PE-X 5 strati Italiano - English Extrusion Lines for 5-layers X-PE Pipes

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EXTRUSION LINES FOR 5-LAYERS X-PE PIPES-2

Linee di estrusione per Tubo PE-X 5 strati La scelta progettuale è stata indirizzata su uno schema di distribuzione del flusso a spirali, per garantire l’uniformità e la distribuzione degli spessori dei singoli strati indipendentemente dalla viscosità del polimero durante il processo di estrusione. Non sono quindi necessari interventi da parte dell’operatore per mantenere costante la qualità del tubo estruso al variare delle condizioni di estrusione. Development has been based on a spiral flow distributor design allowing uniformity and constant thickness distribution on each single layer independently....

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EXTRUSION LINES FOR 5-LAYERS X-PE PIPES-3

Extrusion Lines for 5-layers X-PE Pipes CARATTERISTICHE TECNICHE TECHNICAL FEATURES N° 2 estrusori principali EA 60 LD 33:1per la produzione degli strati esterno ( A ) ed interno ( D ) in PEX-B. Entrambi gli estrusori sono attrezzati con dosaggio gravimetrico a 3 componenti. N° 2 main extruders EA 60 LD 33:1 for the production of outer ( A ) and inner ( D ) layers in PEX-B. Both extruders are equipped with 3-component gravimetric dosing unit. N° 1 coestrusore EA 35 LD 28:1 per la produzione degli strati “legante” intermedi ( B ). L’estrusore è attrezzato con dosaggio gravimetrico a 1 componente....

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