GB2002686A - Improvements in and relating to prefabricated subsurface drains - Google Patents

Improvements in and relating to prefabricated subsurface drains

Info

Publication number
GB2002686A
GB2002686A GB7831573A GB7831573A GB2002686A GB 2002686 A GB2002686 A GB 2002686A GB 7831573 A GB7831573 A GB 7831573A GB 7831573 A GB7831573 A GB 7831573A GB 2002686 A GB2002686 A GB 2002686A
Authority
GB
United Kingdom
Prior art keywords
sheet material
filter
laminated structure
supporting
prefabricated
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.)
Granted
Application number
GB7831573A
Other versions
GB2002686B (en
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Publication of GB2002686A publication Critical patent/GB2002686A/en
Application granted granted Critical
Publication of GB2002686B publication Critical patent/GB2002686B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
    • B01D39/163—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin sintered or bonded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention concerns a laminated structure for use in prefabricated subsurface drains comprising a supporting sheet material and a filter sheet material. The filter sheet material has a permeability sufficient to allow the passage of water while retaining soil. The supporting sheet material has a structural configuration such that channels are formed between it and the filter sheet material to allow free flow of water within the plant of the laminated structure. The laminated structure may comprise the supporting sheet material with (a) the filter material on one side only, or (b) the filter material on both sides, or (c) the filter material on one side and an impermeable sheet material on the other side. The filter material preferably is a synthetic, thermoplastic filamentary, non woven fabric and the supporting material is preferably a thermoplastic plastics net-like material. The materials are preferably joined by a flame-bonding technique.
GB7831573A 1977-08-16 1978-07-28 Prefabricated subsurface drains Expired GB2002686B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3434577 1977-08-16

Publications (2)

Publication Number Publication Date
GB2002686A true GB2002686A (en) 1979-02-28
GB2002686B GB2002686B (en) 1982-03-31

Family

ID=26155939

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7831573A Expired GB2002686B (en) 1977-08-16 1978-07-28 Prefabricated subsurface drains

Country Status (4)

Country Link
AU (1) AU524262B2 (en)
ES (1) ES465947A3 (en)
GB (1) GB2002686B (en)
ZA (1) ZA786346B (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0259165A2 (en) * 1986-09-05 1988-03-09 Leucadia Inc Subsurface drainage matting
FR2661435A1 (en) * 1990-04-27 1991-10-31 Nortene Sa Material in web form, particularly for drainage use
EP0278605B1 (en) * 1987-01-21 1992-09-09 Netlon Limited Drainage material and drainage core for a drainage system
US5152633A (en) * 1988-11-07 1992-10-06 Netlon Limited Method of reinforcing a paved surface
US5273804A (en) * 1988-11-07 1993-12-28 Netlon Limited Reinforcement for reinforcing a paved surface
US5277520A (en) * 1991-12-06 1994-01-11 The Tensar Corporation Grid composite for backfill barriers and waste applications
EP0626187A1 (en) * 1993-05-26 1994-11-30 Chisso Corporation A filtering medium and a process for producing the same
FR2738770A1 (en) * 1995-09-15 1997-03-21 Nortene Technologies Plastic mesh material e.g. for garden, patio or balcony screen
GB2327686A (en) * 1997-06-23 1999-02-03 Netlon Ltd Electrically Conducting Element

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0259165A2 (en) * 1986-09-05 1988-03-09 Leucadia Inc Subsurface drainage matting
EP0259165A3 (en) * 1986-09-05 1989-09-27 Leucadia Inc Subsurface drainage matting
EP0278605B1 (en) * 1987-01-21 1992-09-09 Netlon Limited Drainage material and drainage core for a drainage system
US5152633A (en) * 1988-11-07 1992-10-06 Netlon Limited Method of reinforcing a paved surface
US5273804A (en) * 1988-11-07 1993-12-28 Netlon Limited Reinforcement for reinforcing a paved surface
FR2661435A1 (en) * 1990-04-27 1991-10-31 Nortene Sa Material in web form, particularly for drainage use
US5277520A (en) * 1991-12-06 1994-01-11 The Tensar Corporation Grid composite for backfill barriers and waste applications
EP0626187A1 (en) * 1993-05-26 1994-11-30 Chisso Corporation A filtering medium and a process for producing the same
FR2738770A1 (en) * 1995-09-15 1997-03-21 Nortene Technologies Plastic mesh material e.g. for garden, patio or balcony screen
GB2327686A (en) * 1997-06-23 1999-02-03 Netlon Ltd Electrically Conducting Element

Also Published As

Publication number Publication date
AU524262B2 (en) 1982-09-09
GB2002686B (en) 1982-03-31
AU3886878A (en) 1980-02-21
ES465947A3 (en) 1978-09-16
ZA786346B (en) 1979-10-31

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19970728