Polish version
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Porous hoses made of polyolefin composites and vulcanized rubber scrap

Porous hoses are produced from polymeric composites, obtained entirely or partly from waste polyolefins and vulcanized rubber scrap. Typical outer diameters of these hoses are 15 and 19 mm. Porous hoses 19 mm in diameter are prepared for Gardene connectors, enabling them to be attached to an irrigating system.


A brief description of the technology

Porous hoses are produced by extruding polymeric composites obtained from polyolefin waste and vulcanized rubber scrap.

The mixture consists of:

Polyethylene or polypropylene (primary or waste) 10–60 wt. %, vulcanized rubber scrap 40–90 wt. % and porophor, playing an important role as a porosity regulator. The composition can also contain greases, mechanical properties modifiers, anti-frictional additives, fillers and stabilizers.


Advantages of the technology offered

An advantage of the technology is obtaining cheap hoses of good quality, which thanks to their porosity (open micropores, uniformly spaced throughout its whole mass) enables homogeneous pouring of water throughout the irrigation zone either on the surface or underground. They can be also applied in fertigation (irrigation joined with fertilization). Application of porous hoses provides a new, ecological and economical soil fertilization and irrigation system.

Another advantages of pipes produced according to the technology developed by Industrial Chemistry Research Institute are:

  • water savings by 40–60 % relative to the amount used in traditional systems (installed underground, delivering water directly to roots of vegetation);
  • ability to feed plants with fertilizers soluble in water;
  • easy installation and dismounting;
  • low working pressure of the system < 1 · 105 bar (optimal 0,2 · 105 bar);
  • water throughput 140 l/h · m.


Equipment

Single-screw extruder, screw diameter ³ 45 mm, head of special construction (patented).


Patents

Patent application No P-175 637 (1995) „Device to produce porous pipes from polymeric compositions containing comminuted vulcanized rubber scrap”.

Patent application No P-177 682 (1995) „Thermoplastic polymeric composition containing comminuted vulcanized rubber scrap”.


Market competitiveness

No similar home-made porous hoses on the Polish market.


References

Silver medal IENA 95 (Nuremberg, Germany, 1995).

Diploma GENIUS '96 (Budapest, Hungary, 1996).

Gold medal Casablanca'97 (Morocco, 1997).


Information

Dr. Regina Jeziórska, D.Sc., Eng., prof. of ICRI

phone: + 48 22 568 24 91, fax: + 48 22 568 21 84