• Venus_1200
  • Venus_450
  • Venus_250b
  • Venus_250
  • Venus_160

VENUS, EXPRESSION OF SKILL AND EXPERIENCE AS DIE-HEAD DESIGNER


The VENUS design is based on a long time experience in developing, producing and selling die-heads for polyolefin materials. Conceived for conventional and standard  pipes, the Venus concept is also available for the production of micro ducts, in range 3 to 16 mm, and up to 800 mm in a cross version, for the coating of steel, plastic, composite, corrugated and umbilical pipes.

The VENUS single layer pipe heads have implemented important technological features in order to reach the best pipes processing and to fit a wide range of materials at very high output. The spiral geometry has been especially optimized for latest generation of PE and PP raw materials, while length, volume and pressure have been reduced.

VENUS 1600 & 2600 set a new technology standard for the production of large diameter pipes. The main innovation is that two extruders are used thanks to the new distribution split into two spirals, each one fed by one extruder. The spirals have the same geometry and are short in length to cut the residence time. Based on a swelling production mode (for a better control of wall thickness distribution and pipe ovality) the die-heads grant higher outputs, low working pressure, optimal melt distribution and easier and quick die-sets change.


VENUS die-heads can be endowed with two innovative option units:

  • the Pipe Air Cooling (PAC), - an efficient system to reduce cooling length and improve pipe quality.
  • the Venus Coex-Unit, - a radial spiral technology for second (external) layer.
Venus monolayer is available in six units from Ø 16 to 2.600 mm. 
 
PIPEHEAD Venus 160 Venus 400 Venus 630 Venus 1200 Venus 1600 Venus 2600
Dimension range 16-160  16-400  50-630  355-1200  500-1600  1400-2600 
Throughput PE
 
500  800 1200  1500 2000  3000 
Throughput PP
 
400 800  1000 1200  1400  2000 
Segmented
Mandrel
 from Ø 75 mm  from Ø 75 mm yes yes yes yes
Pipe Air Cooling
(PAC)
no  from Ø 140 mm   from Ø 140 mm yes yes yes
Spiral Heating  yes yes yes yes yes  yes
Mandrel Heating only as gloss
heater for
PE-RT & PP 
 from Ø 140 mm yes yes yes yes
Spiral Cooling no  no  yes yes yes yes
Mandrel Cooling no no  da Ø250 mm  yes yes yes 

Main technical features

  • New melt feeding system and spiral geometry reduces length, volume & pressure.
  • Same flow behavior on all heads.
  • New die design 50% shorter and reduced residence time.
  • Die sets fit on different pipe heads models.
  • Wider production range per die set.
  • All pipe heads endue internal Pipe Air Cooling (PAC). 
  • Bigger heads with internal Heating Cooling Systems (HCS) by water.
  • Compact design reduces heating power & assembling time.
  • Co-extrusion ring for thin outer layer, with radial system.

Your benefits at a glance

  • Lower investment in terms of €/Kg throughput of the pipe head.
  • Smooth flowing to keep material properties unchanged.
  • Short die-set and segmented mandrels allow an easy and quick die-sets change, reducing the line downtime. 
  • Even wall thickness distribution for lower overweight of pipe and raw material saving.
  • Pipe Air Cooling system (PAC) to short the cooling length of the line and to improve the pipe quality.

Pipe Air Cooling (PAC)

An efficient system to reduce cooling length and to improve the pipe quality.
Extrusion lines for pipes got longer due to higher extruders output. The PAC system helps to reduce the length of the production lines thanks to its high efficiency in the internal pipe cooling.
The Pipe Air Cooling allows a uniform cooling, 360° round and across its thick wall, improving the pipe quality itself.

The system provides intensive cooling of the inner pipe surface by sucking air in the opposite direction to extrusion. By forcing the airflow, it ensures uniform cooling around the pipe and through the wall thickness, decreasing the differences in the pipe solidification rate and reducing the residual internal stresses. This also has the benefit of reducing the wall thickness eccentricity and ovality whilst providing the opportunity to have a short line or to obtain higher output compared to a standard line without inner cooling.
 
  • Shorter length or higher output speed of the extrusion line.
  • Reduced volume of water or cooling capacity compared to conventional line configuration.
  • Less thermal load to the inside surface (less thermal oxidation of inside surface, therefore longer lifetime without brittle failure).
  • Reclaimed energy use from heated air is possible for material pre-heating purposes.
  • Uniform cooling is reducing stress distribution. 

External layer coex-unit

A Radial spiral technology for external layer application
The Venus coex-unit is a radial distribution ring system to produce a coextruded external layer out of PE, PE 100 RC, PP, PP foamed or any other special material. The outer layer thickness depends on the output ratio between the co-extruder and the main extruder, up to a max of 50% of total wall thickness.

In the same way of an axial spiral mandrel distributor of cylindrical design, the flat radial distributors are characterized by a uniform volume flow and hence an excellent layer thickness distribution, as well the absence of weld lines and other weak points. The radial distributor is a flat helical spiral, the melt flows to the tooling centre through feeding channels and then circumferentially distributed. 


Your benefit at a glance 

  • Radial spiral has low pressure built up and high throughput.
  • Optimal layers distribution and even thickness (thin or thick), part of the total SDR wall.
  • Venus pipe-heads can be upgraded anytime to multilayer solution, with the adoption of an external layer coex-unit.