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GB1535772A - Extruded plastic mash - Google Patents

Extruded plastic mash

Info

Publication number
GB1535772A
GB1535772A GB25267/75A GB2526775A GB1535772A GB 1535772 A GB1535772 A GB 1535772A GB 25267/75 A GB25267/75 A GB 25267/75A GB 2526775 A GB2526775 A GB 2526775A GB 1535772 A GB1535772 A GB 1535772A
Authority
GB
United Kingdom
Prior art keywords
strands
mesh
intersections
stretching
extruded
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB25267/75A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Netlon Ltd
Original Assignee
Netlon Ltd
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 Netlon Ltd filed Critical Netlon Ltd
Priority to GB25267/75A priority Critical patent/GB1535772A/en
Priority to IL49693A priority patent/IL49693A/en
Priority to NO761869A priority patent/NO761869L/no
Priority to ZA763257A priority patent/ZA763257B/en
Priority to AU14611/76A priority patent/AU1461176A/en
Priority to DE19762625487 priority patent/DE2625487A1/en
Priority to FI761624A priority patent/FI761624A7/fi
Priority to PT65204A priority patent/PT65204B/en
Priority to SE7606580A priority patent/SE7606580L/en
Priority to LU75143A priority patent/LU75143A1/xx
Priority to JP51067205A priority patent/JPS51149975A/en
Priority to FR7617558A priority patent/FR2314041A1/en
Priority to BE2055109A priority patent/BE842831A/en
Priority to DD193311A priority patent/DD125062A5/xx
Priority to NL7606375A priority patent/NL7606375A/en
Priority to NZ181126A priority patent/NZ181126A/en
Priority to BR7603781A priority patent/BR7603781A/en
Priority to DK260376A priority patent/DK260376A/en
Priority to GR50978A priority patent/GR60323B/en
Priority to ES448846A priority patent/ES448846A1/en
Priority to TR18905A priority patent/TR18905A/en
Publication of GB1535772A publication Critical patent/GB1535772A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/33—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles with parts rotatable relative to each other
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2028/00—Nets or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

1535772 Stretched extruded nets NETLON Ltd 26 May 1976 [12 June 1975] 25267/75 Heading D1R A mesh, Fig. 5, having 6-sided openings is formed by stretching 4 sided plastics mesh, Fig. 2, to produce molecular orientation in strands 5a, 5b, 6a, 6b and deform the intersections 7 into strands 7a comprising confluent portions of pairs of the original strands, at least a portion of each strand 7a being molecularily orientated whilst portions 7b at each end of the strands 7a remain unorientated. The starting mesh may be formed by extrusion with the intersections formed before or as the strands are extruded, or by adhesive bonding of the strands where they cross. Preferably the mesh is tubular and formed from a counter-rotating concentric pair of circular dies 1, 2, Fig. 1, having spaced orifices 3, 4 of generally trapezoidal cross-section with relieved trailing edges 3a, 4a. This avoids a sharp cut-off of the extruded plastics material as the orifices separate and thereby facilitates necking of the intersections 7 when the mesh is subject to transverse drawing. The mesh angle α is 90-110‹. The mesh is given a first stretch in the transverse or preferably the machine direction to orientate strands 5, 6. It is then stretched in the machine or preferably the transverse direction, e.g. by passage over a flexible carrier sleeve embracing a diverging hollow internal mandrel, to deform the intersections into strands. The stretching yields a lighter net with a softer feel. Specification 39546/74 claims a similar net in which however the stretching has been sufficient to molecularly orientate all the material of strands 7.
GB25267/75A 1975-06-12 1975-06-12 Extruded plastic mash Expired GB1535772A (en)

Priority Applications (21)

Application Number Priority Date Filing Date Title
GB25267/75A GB1535772A (en) 1975-06-12 1975-06-12 Extruded plastic mash
IL49693A IL49693A (en) 1975-06-12 1976-05-31 Extruded plastic mesh structure
NO761869A NO761869L (en) 1975-06-12 1976-06-02
ZA763257A ZA763257B (en) 1975-06-12 1976-06-02 Improvements in or relating to extruded plastic mesh
AU14611/76A AU1461176A (en) 1975-06-12 1976-06-03 Extruded plastic mesh
DE19762625487 DE2625487A1 (en) 1975-06-12 1976-06-05 MESH STRUCTURE
FI761624A FI761624A7 (en) 1975-06-12 1976-06-08
PT65204A PT65204B (en) 1975-06-12 1976-06-09 Improvement in meshes of extruded plastics
SE7606580A SE7606580L (en) 1975-06-12 1976-06-10 EXTENSIONED PLASTIC
LU75143A LU75143A1 (en) 1975-06-12 1976-06-10
JP51067205A JPS51149975A (en) 1975-06-12 1976-06-10 Metting structure
FR7617558A FR2314041A1 (en) 1975-06-12 1976-06-10 EXTRUDED PLASTIC MATERIAL PERFECTION
BE2055109A BE842831A (en) 1975-06-12 1976-06-11 EXTRUDED PLASTIC MATERIAL PERFECTION
DD193311A DD125062A5 (en) 1975-06-12 1976-06-11
NL7606375A NL7606375A (en) 1975-06-12 1976-06-11 EXTRUDE PLASTIC MESH.
NZ181126A NZ181126A (en) 1975-06-12 1976-06-11 Extruded plastics mesh with six-sided openings
BR7603781A BR7603781A (en) 1975-06-12 1976-06-11 IMPROVEMENTS IN OR RELATING TO EXTRUDED PLASTIC KNITTING
DK260376A DK260376A (en) 1975-06-12 1976-06-11 EXTRUDED PLASTIC NET
GR50978A GR60323B (en) 1975-06-12 1976-06-12 Improvements in or relating to extruded plastic mesh
ES448846A ES448846A1 (en) 1975-06-12 1976-06-12 Extruded plastic mash
TR18905A TR18905A (en) 1975-06-12 1976-06-14 EXTRUDED PLASTIC AGDA OR RELATED REPRODUCTION

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB25267/75A GB1535772A (en) 1975-06-12 1975-06-12 Extruded plastic mash

Publications (1)

Publication Number Publication Date
GB1535772A true GB1535772A (en) 1978-12-13

Family

ID=10224943

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25267/75A Expired GB1535772A (en) 1975-06-12 1975-06-12 Extruded plastic mash

Country Status (21)

Country Link
JP (1) JPS51149975A (en)
AU (1) AU1461176A (en)
BE (1) BE842831A (en)
BR (1) BR7603781A (en)
DD (1) DD125062A5 (en)
DE (1) DE2625487A1 (en)
DK (1) DK260376A (en)
ES (1) ES448846A1 (en)
FI (1) FI761624A7 (en)
FR (1) FR2314041A1 (en)
GB (1) GB1535772A (en)
GR (1) GR60323B (en)
IL (1) IL49693A (en)
LU (1) LU75143A1 (en)
NL (1) NL7606375A (en)
NO (1) NO761869L (en)
NZ (1) NZ181126A (en)
PT (1) PT65204B (en)
SE (1) SE7606580L (en)
TR (1) TR18905A (en)
ZA (1) ZA763257B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5156495A (en) 1978-10-16 1992-10-20 P. L. G. Research Limited Plastic material mesh structure
GB2315702A (en) * 1996-07-30 1998-02-11 Netlon Ltd Integral tube having strands

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2521065A1 (en) * 1982-02-10 1983-08-12 Nortene Sa Extruded thermoplastic tubular netting - with triangular cross=sectioned strands, joined at their bases, for oyster-farming nets

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3255065A (en) * 1961-06-02 1966-06-07 Fmc Corp Method for making a composite film
NL278551A (en) * 1961-06-02
GB1235901A (en) * 1968-01-12 1971-06-16 Conwed Corp Improved method of producing thermoplastic netting
FR1566717A (en) * 1968-03-27 1969-05-09
US3666609A (en) * 1970-07-15 1972-05-30 Johnson & Johnson Reticulate sheet material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5156495A (en) 1978-10-16 1992-10-20 P. L. G. Research Limited Plastic material mesh structure
GB2315702A (en) * 1996-07-30 1998-02-11 Netlon Ltd Integral tube having strands

Also Published As

Publication number Publication date
PT65204B (en) 1977-11-22
BE842831A (en) 1976-10-01
NO761869L (en) 1976-12-14
FR2314041B1 (en) 1980-01-11
AU1461176A (en) 1977-12-08
TR18905A (en) 1977-12-09
ZA763257B (en) 1977-05-25
FI761624A7 (en) 1976-12-13
FR2314041A1 (en) 1977-01-07
SE7606580L (en) 1976-12-13
IL49693A0 (en) 1976-07-30
PT65204A (en) 1976-07-01
NL7606375A (en) 1976-12-14
BR7603781A (en) 1977-02-08
JPS51149975A (en) 1976-12-23
DE2625487A1 (en) 1976-12-23
DD125062A5 (en) 1977-03-30
NZ181126A (en) 1979-06-08
IL49693A (en) 1978-10-31
ES448846A1 (en) 1977-12-01
LU75143A1 (en) 1977-01-25
GR60323B (en) 1978-05-08
DK260376A (en) 1976-12-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee