ZA804132B - Sprinkler hose and method and apparatus for its production - Google Patents

Sprinkler hose and method and apparatus for its production

Info

Publication number
ZA804132B
ZA804132B ZA00804132A ZA804132A ZA804132B ZA 804132 B ZA804132 B ZA 804132B ZA 00804132 A ZA00804132 A ZA 00804132A ZA 804132 A ZA804132 A ZA 804132A ZA 804132 B ZA804132 B ZA 804132B
Authority
ZA
South Africa
Prior art keywords
mould
run
vacuum
hose
halves
Prior art date
Application number
ZA00804132A
Inventor
R Hegler
W Hegler
Original Assignee
Hegler Wilhelm
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hegler Wilhelm filed Critical Hegler Wilhelm
Publication of ZA804132B publication Critical patent/ZA804132B/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G25/00—Watering gardens, fields, sports grounds or the like
    • A01G25/02—Watering arrangements located above the soil which make use of perforated pipe-lines or pipe-lines with dispensing fittings, e.g. for drip irrigation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/0015—Making articles of indefinite length, e.g. corrugated tubes
    • B29C49/0021—Making articles of indefinite length, e.g. corrugated tubes using moulds or mould parts movable in a closed path, e.g. mounted on movable endless supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/006—Using vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental Sciences (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Catching Or Destruction (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Nozzles (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

1. Method of manufacturing a water hose having inner intermediate walls using a mould which is moved along a mould run and consists of endlessly guided mould halves which, when moving into the linear mould run, are guided in pairs towards one another and closely adjacent to one another in the direction of movement while the mould is closed, and a still thermoplastic hose being fed to the mould and deformed therein under a vacuum, characterised in that, even before two mould halves are moved together, the hose is subjected to a vacuum at least in part of its cross-section, at least one vacuum channel extending into the run-in area of the mould halves as far as the front of the linear mould run so that at least one vacuum hole overlaps the vacuum channel before the mould is closed, and, subsequently, is compressed over part of its cross-section leaving hollow spaces open to form weld marks.
ZA00804132A 1979-08-17 1980-07-09 Sprinkler hose and method and apparatus for its production ZA804132B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792933304 DE2933304A1 (en) 1979-08-17 1979-08-17 IRRIGATION HOSE AND METHOD AND DEVICE FOR PRODUCING IT

Publications (1)

Publication Number Publication Date
ZA804132B true ZA804132B (en) 1981-07-29

Family

ID=6078648

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00804132A ZA804132B (en) 1979-08-17 1980-07-09 Sprinkler hose and method and apparatus for its production

Country Status (14)

Country Link
EP (1) EP0024622B1 (en)
JP (1) JPS5637126A (en)
AT (1) ATE6570T1 (en)
CA (1) CA1168012A (en)
DD (1) DD152615A1 (en)
DE (2) DE2933304A1 (en)
DK (1) DK352780A (en)
ES (1) ES252578Y (en)
GR (1) GR69803B (en)
IE (1) IE50758B1 (en)
IL (1) IL60522A0 (en)
IN (1) IN152408B (en)
MA (1) MA18932A1 (en)
ZA (1) ZA804132B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4763842A (en) * 1987-02-04 1988-08-16 Bill D. McCarthy Water drip device for irrigation
ATE542966T1 (en) * 2008-04-25 2012-02-15 Bernhard Feigl PROTECTIVE WALL OR PRESSURE PIECE FOR SUPPORTING A PROTECTIVE WALL

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL35081A (en) * 1969-08-11 1973-03-30 A C I Operations Trickle irrigation system
DE2061027C3 (en) * 1970-12-11 1982-03-04 Wilhelm 8730 Bad Kissingen Hegler Device for applying a transverse profile to a pipe made of thermoplastic material
US3777987A (en) * 1972-08-04 1973-12-11 Allport Davies Irrigation device
IL43850A (en) * 1973-12-18 1977-12-30 Mehoudar R Dripper unit for drip level irrigation
FR70398E (en) * 1974-03-22 1959-04-06 Electronique & Physique Improvements in television and cinematography cameras
FR69963E (en) * 1974-03-22 1959-01-30 Onera (Off Nat Aerospatiale) Apparatus for counting records
NL7610383A (en) * 1975-09-22 1977-03-24 Sumitomo Chemical Co IRRIGATION PIPE.
DE2553574A1 (en) * 1975-11-28 1977-06-08 Roehm Gmbh Thermoplastic heat exchangers prodn. by extrusion blow forming - using endless rotary forming tools producing continuous lengths
IL49814A (en) * 1976-06-16 1981-10-30 Heftziba Palgal Hose for trickle irrigation
AU2643377A (en) * 1976-06-29 1979-01-04 Drori M Drip irrigation emitter
MX143576A (en) * 1977-04-11 1981-06-03 Jaime Sahagun Barragan IMPROVEMENTS IN INTEGRAL DRIP IRRIGATION SYSTEM

Also Published As

Publication number Publication date
IN152408B (en) 1984-01-07
DK352780A (en) 1981-02-18
MA18932A1 (en) 1981-04-01
EP0024622B1 (en) 1984-03-14
JPS5637126A (en) 1981-04-10
CA1168012A (en) 1984-05-29
IE50758B1 (en) 1986-07-09
DE3066979D1 (en) 1984-04-19
DD152615A1 (en) 1981-12-02
ATE6570T1 (en) 1984-03-15
ES252578Y (en) 1981-08-16
EP0024622A1 (en) 1981-03-11
DE2933304A1 (en) 1981-04-02
IL60522A0 (en) 1980-09-16
ES252578U (en) 1981-02-16
GR69803B (en) 1982-07-12
IE801740L (en) 1981-02-17

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