GB1314181A - Filters and their manufacture - Google Patents

Filters and their manufacture

Info

Publication number
GB1314181A
GB1314181A GB209169A GB1314181DA GB1314181A GB 1314181 A GB1314181 A GB 1314181A GB 209169 A GB209169 A GB 209169A GB 1314181D A GB1314181D A GB 1314181DA GB 1314181 A GB1314181 A GB 1314181A
Authority
GB
United Kingdom
Prior art keywords
sheet
extruder
filtering
molten
filter
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
GB209169A
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.)
Marshall D A G
Original Assignee
Marshall D A G
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 Marshall D A G filed Critical Marshall D A G
Publication of GB1314181A publication Critical patent/GB1314181A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B01D29/012—Making filtering elements
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B01D29/05—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • 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
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • 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
    • B32B5/18—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 features of a layer of foamed material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00—Thermal insulation in general
    • F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F16L59/029—Shape or form of insulating materials, with or without coverings integral with the insulating materials layered
    • 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
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/38—Meshes, lattices or nets

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

1314181 Making filter elements D A G MARSHALL 19 Feb 1970 [14 Jan 1969] 3091/69 Headings B1D and BIT [Also in Division B5] An air filter is made by forming on one surface of a sheet of porous material a grid or mesh or discrete separated strips of molten thermoplastic material and pressing the sheet whilst the thermoplastic material is still molten against a further air filtering element. The thermoplastic materials act to bond the sheet and element together and, when cooled and solidified forms a reinforcing grid. The sheet may be of air filtering paper, glass fibre paper, synthetic open celled plastics foam, for example foamed polyurethane, random-fibre mat or mono-filament screen. The thermoplastic material may be polyethylene and, if desired, internal reinforcing lengths of string, cord, or wire or nylon may be incorporated in the material to give added strength. In one embodiment, a porous sheet, is passed in front of a first multi-orificed extruder to form lines on its surface in one direction, twisted through an angle, preferably 90‹, and then passed in front of another multi-orificed extruder to form intersecting lines in another direction. Whilst the grid thus formed is still molten a further filtering element is pressed against it, and the extruded material allowed to cool. If desired a single extruder may be used and the sheet passed twice in front of it. Also relative movement between the sheet and the extruder can be obtained by moving the extruder whilst keeping the sheet fixed or allowing it to move. In one embodiment, a laminated filter element, the components of which are bonded by molten grids 40, 42, includes outer layers of demembraned polyurethene foam 36, 38 and an inner layer 34 of a pleated laminate comprising a sheet of phenolic resin impregnated glass cloth bonded to a filtering layer of, for example, glass fibre paper or demembraned foamed plastics material. The laminated filter element is peripherally bounded by a metal frame 48 of steel or aluminium alloy filled with plastics material 50 to form a complete filter. In a second embodiment, a laminated filter element includes a central carbon-filled honeycomb layer 54 bonded by polyethylene grids 60, 62 to monofilament filtering screens 56, 58. The element is peripherally bounded by a frame 52 of metal or plastics material to form a complete filter.
GB209169A 1969-01-14 1969-01-14 Filters and their manufacture Expired GB1314181A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB209169 1969-01-14

Publications (1)

Publication Number Publication Date
GB1314181A true GB1314181A (en) 1973-04-18

Family

ID=9733438

Family Applications (1)

Application Number Title Priority Date Filing Date
GB209169A Expired GB1314181A (en) 1969-01-14 1969-01-14 Filters and their manufacture

Country Status (1)

Country Link
GB (1) GB1314181A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144675A (en) * 1983-08-04 1985-03-13 Micropore International Ltd Handleable shapes of thermal insulation material
GB2294649A (en) * 1994-11-02 1996-05-08 Btr Plc Filter Element
GB2294648A (en) * 1994-11-02 1996-05-08 Btr Plc Filter element
GR1003159B (en) * 1998-06-18 1999-06-21 G M P Co. Ltd Laminator film
CN104525524A (en) * 2014-12-19 2015-04-22 江苏精亚环境科技有限公司 Dust collection trolley
CN107983088A (en) * 2018-01-30 2018-05-04 深圳市西谷制冷设备有限公司 Air purifier

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144675A (en) * 1983-08-04 1985-03-13 Micropore International Ltd Handleable shapes of thermal insulation material
GB2294649A (en) * 1994-11-02 1996-05-08 Btr Plc Filter Element
GB2294648A (en) * 1994-11-02 1996-05-08 Btr Plc Filter element
GB2294649B (en) * 1994-11-02 1996-11-20 Btr Plc Filter element
GB2294648B (en) * 1994-11-02 1997-02-19 Btr Plc Filter element
GR1003159B (en) * 1998-06-18 1999-06-21 G M P Co. Ltd Laminator film
CN104525524A (en) * 2014-12-19 2015-04-22 江苏精亚环境科技有限公司 Dust collection trolley
CN104525524B (en) * 2014-12-19 2017-01-11 江苏精亚环境科技有限公司 Dust collection trolley
CN107983088A (en) * 2018-01-30 2018-05-04 深圳市西谷制冷设备有限公司 Air purifier

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee