US3832108A - Installation for forming molded members of fibrous material - Google Patents

Installation for forming molded members of fibrous material Download PDF

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Publication number
US3832108A
US3832108A US00314039A US31403972A US3832108A US 3832108 A US3832108 A US 3832108A US 00314039 A US00314039 A US 00314039A US 31403972 A US31403972 A US 31403972A US 3832108 A US3832108 A US 3832108A
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US
United States
Prior art keywords
basic form
basic
pressing
installation
fibrous material
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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 - Lifetime
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US00314039A
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English (en)
Inventor
H Posch
W Nauert
W Lohner
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Amiantus AG
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Amiantus AG
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Publication date
Application filed by Amiantus AG filed Critical Amiantus AG
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Publication of US3832108A publication Critical patent/US3832108A/en
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/52—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
    • B28B1/528—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement for producing corrugated sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/0097—Press moulds; Press-mould and press-ram assemblies

Definitions

  • ABSTRACT An installation for forming members of a fibrous material including cooperatively operating liquidpervious basic and pressing forms forming a layer of material therebetween by expelling through the forms liquid from a solution containing the fibrous material; and a movable adjustable frame encompassing the basic form so as to control the extent of movement and pressing between the basic and pressing forms.
  • the present invention relates to an installation or apparatus for forming molded members. More particularly, the invention relates to an installation for the manufacture of molded members constituted of a fibrous material, such as asbestos cement or the like, by positioning a layer of the fibrous material, which is contained in a liquid or aqueous suspension, against the surface of a liquid-pervious basic form corresponding to the finishing shape of the molded member.
  • a fibrous material such as asbestos cement or the like
  • the molding of a member; constituted of a layer of fibrous material, from fibrous material contained in a liquid or aqueous suspension, by depositing the material against the surface of a liquid-pervious or perforate basic form is effected by imparting a pressure differential to the opposite surfaces of the basic form, either by imposing a reduced pressure or vacuum to the surface of the basic form opposite to the surface on which the fibrous material layer is deposited, or by an increased pressure acting directed. on the fibrous materialcontaining layer.
  • the liquid, or aqueous portion of the suspension is either aspirated through the perforations or apertures in the basic fonn, or pressed therethrough.
  • the liquid or water con veyed through the basic form apertures deposits and positions the fibers-contained therein against the surface of the basic form so as to form a more or less compacted fibrous material layer.
  • the basic form is removed from the installation, and the layer of fibrous material adhering thereto may be processed, if required, into final shape in another suitable apparatus.
  • a novel and improved apparatus for forming molded members of fibrous material being of constant thickness throughout, and with precise edge configurations, as well as being adapted to provide for the removal of any liquid or water, in which the fibrous material is suspended, from both sides of the layer, so asto readily.
  • the present installation provides for the forming of the molded fibrous material members without the need of further reworking thereof, by forming molded members having precise measurements, while concurrently effecting a significant reduction in the amount of time required for the compression of the material and the respective removal of any liquid from the formed layer of fibrous material.
  • an installation or apparatus constituted essentially of a rigid basic form of a liquid-pervious material, and a cooperative rigid pressing form also made of liquid-pervious material, both being gas-and-liquidpervious along the surfaces thereof,.and with the pressing form adapted to be conveyed toward the basic form.
  • the pressing form may be imparted a suitable surface configuration which is complementary with the surface configuration of the basic form.
  • the basic form is encompassed by a suitable frame, which extends in the axial direction of pressing movement of the form toward the pressing form so as to overlap or extend beyond the thickness of the basic form and the initial thickness of the layer of fibrous material in the suspension, and which is axially displaceable with respect to-the basic form upon the latter being contacted in compressive engagement by the pressing form, until the required compressed thickness of the molded member is obtained.
  • FIG. 1 illustrates a sectional elevational view of a fibrous material forming installation according to the present invention shown in an open position
  • FIG. 2 shows a sectional elevational view of a second embodiment of the forming installation in a closed position.
  • the forming installation of the present invention includes a basic liquid-pervious form 1 having a plurality of perforations or apertures extending therethrough, and which is adapted to be immersed in a fibrous material-containing aqueous suspension.
  • a layer of fibrous material'6 formed from the suspension is adapted to be accumulated or deposited along the lower surface of the basic form I, for example, by imparting a vacuum or reduced pressure in the region 5 above the basic form 1.
  • the basic form is provided with a plurality of apertures or perforations, and may preferably be covered by a suitable netting or filter cloth 3.
  • a pressing form 2 which is adapted to effect compression of the deposited layer of fibrous material 6 against the surface of the basic form 1, is made essentially of the same type of construction as basic form 1, and is adapted to be moved thereagainst by a suitable pressing device (not shown).
  • Both the basic form 1 and the pressing form 2 may be constituted of rigid material, such as metal or hard synthetic plastic material.
  • the basic form 1 extends, in the direction of pres sure, into upwardly extending edge walls 7, which together with an upper closure wall 8 form the closed space or region 5.
  • a suitable nozzle extends through closure wall 8, and communicates with conduits 9 which preferably extend toward the lowest points of the upper surface of the basic form 1, so as to provide for aspiration therethrough of at least portions of the air and of the liquid or water contained in the suspension.
  • a vertical frame 4 extends about the outer walls 7 of the basic form, the inner walls of the frame 4 being complementary to the outer surfaces of walls 7 and being axially slidable in regard thereto.
  • the lower portion of frame 4 is dimensioned, in the direction of pressure thereof, so as to in addition to basic form 1, surround the fibrous material layer 6 deposited on the surface of the basic form prior to compression thereof by the pressing form 2.
  • the frame 4 Upon the basic form 1 and the pressing form 2 being brought together in the pressing sequence, as shown by the arrow in FIG. 1, the frame 4 is first contacted along the bottom surface thereof by the upper surface of lateral walls which support the pressing form 2, and is then moved upwardly, with respect to basic form 1, through the upward movement of pressing form 2 until it is finally positioned in contact with the bottom surface of the upper closure wall 8, as shown, for example, in FIG. 2 of the drawing.
  • the height of the frame 4 is predetermined or adjusted whereby upon closing of the basic form 1 and pressing form 2 by the pressing sequence as shown in FIG. 2 of the drawing, a suitable gap or space is formed between the molding forms 1 and 2, corresponding essentially to the thickness of the molded member 6 which is being formed during the pressing.
  • the particular advantage of frame 4 lies in that it encompasses the member being molded about its entire peripheral surface with rigid and exactly defined walls, whereby the present installation provides molded members having exact measured peripheral and thickness dimensions.
  • both the basic form 1 and pressing form 2 are provided with suitable perforations or apertures, the liquid or water contained in the fibrous material layer 6 being molded between the forms is expelled from both sides thereof, from the lower pressing form by falling and flowing therethrough, and from the upper pressing form by aspiration through conduits 9 and 9'. This, of course, will impart the required thickness to the layer of the fibers in the formed member.
  • suitable compression springs 14 may be interposed between the upper front surfaces of the frame 4 and the bottom surface of upper wall 8 which, when no pressure is exerted against the frame 4 by the pressing form 2 will provide a positive force being exerted against the upper surface of frame 4 so as to posi- Upon completion of the compressing sequence, in
  • the frame 4 which during pressing has been upwardly moved against the lower surface of closure wall 8, will revert to the downward position shown in FIG. 1 due to its own gravitational weight so as to be in detached and spaced position relative to closure wall 8.
  • the frame 4 is provided with an outwardly extending flange or collar 11 along the upper edge thereof, the flange being adapted to coact with a depending side wall 11 of closure wall 8, having an inwardly projecting flange 13 extending below the bottom of the flange 11. This in effect will provide for a guideway between the frame 4 and they entire structure of the basic form 1.
  • the downwardly projecting wall 12 and inwardly extending flange 13 may be constructed so as to be of yieldable construction whereby, if required, this provides for releasing of the frame 4 by flexing member 12 radially outwardly and permitting the flange 11 to slide down past the inwardly projecting flange 13.
  • the frame may be provided with a suitable ring or extension frame '15, the dimensions and positions of which correspond to the dimension and positions of the lower front surface of frame 4, and which abutagainst the lower frame edge before and during the immersion thereof into the fibermateriaI-containing suspension, and being removable just prior to the pressing form being brought into material pressing engagement with basic form 1.
  • the foregoing may also be obtained by constructing and positioning frame 4 whereby its lower edge, when the basic form 1 is immersed in the suspension, may be moved backwardly to an extent behind the fibrous material layer on the surface of the basic form 1, whereby no suspension material of any appreciable amount accumulates on the frame surface.
  • FIG. 2 of the drawing which shows an installation constructed essentially similar to that of FIG. 1, and which operates in the same manner, a device may be provided which will prevent the inadvertent dropping down of the frame 4 upon opening of the mold after the fomiing of the molded member 6.
  • the frame 4 thus may be maintained in its uppermost position in contact the lower surface of closure wall 8, by means of one or more suitable devices constituted essentially of a pivotable catch or lever 16 engageable with flange 11 and connected to the piston of a suitable hydraulic or pneumatic pressure cylinder 17 mounted on wall 8, and adapted to upon suitable actuation thereof to facilitate the release of catch 16 from the lower surface of flange 11.
  • suitable hydraulic or pneumatic pressure cylinder 17 mounted on wall 8
  • This will then permit the frame 4 to move downwardly in a controlled manner into the position shown in FIG. 1 upon separation between the basic form 1 and pressing form 2.
  • Installation for forming molded members of a fibrous material comprising a Iiquid-pervious basic form adapted to have a layer of said fibrous material contained in a liquid suspension positioned against a surface thereof; a liquid-pervious pressing form adapted to be moved toward said material layer-covered surface of said basic form; means for providing a zone of reduced pressure on opposite side of said basic form so as to facilitate removal of said liquid from said material through said pervious basic and pressing forms and effect thickening of the fibrous material interposed between said forms; frame means encompassing the peripheral edges of said basic form, said frame means extending, in the direc tion of pressing, beyond said basic form edges, said frame means being axially slidable relative to said basic form so as to assume during the pressing together of said basic and pressing forms, a height depending beyond the edges of said basic form corresponding to the final thickness of the molded fibrous material formed between said basic and pressing forms, said reduced pressure zone comprising upstanding peripheral sidewalls extending from said basic form; an upper

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Producing Shaped Articles From Materials (AREA)
  • Paper (AREA)
  • Treatment Of Fiber Materials (AREA)
US00314039A 1971-12-10 1972-12-11 Installation for forming molded members of fibrous material Expired - Lifetime US3832108A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2162030A DE2162030C3 (de) 1971-12-10 1971-12-10 Vorrichtung zur Herstellung von Formkörpern aus Faserstoff, insbesondere Asbestzement

Publications (1)

Publication Number Publication Date
US3832108A true US3832108A (en) 1974-08-27

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US00314039A Expired - Lifetime US3832108A (en) 1971-12-10 1972-12-11 Installation for forming molded members of fibrous material

Country Status (11)

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US (1) US3832108A (de)
JP (1) JPS5421850B2 (de)
BE (1) BE790805A (de)
BR (1) BR7208656D0 (de)
CH (1) CH556230A (de)
DE (1) DE2162030C3 (de)
ES (1) ES409343A1 (de)
GB (1) GB1408590A (de)
IT (1) IT969280B (de)
NL (1) NL7214763A (de)
ZA (1) ZA728719B (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4162877A (en) * 1976-09-23 1979-07-31 Hawker Siddeley Canada Ltd. Method and apparatus for consolidating particle board
US4544344A (en) * 1983-02-05 1985-10-01 Werzalit-Werke, J.F.Werz Kg Arrangement for producing shaped parts
US4616991A (en) * 1985-08-15 1986-10-14 Her Majesty The Queen In Right Of The Province Of Alberta As Represented By The Minister Of Energy And Natural Resources Apparatus for the manufacture of a corrugated wafer board panel
US6013215A (en) * 1998-03-10 2000-01-11 Mitsui Wood Systems, Inc. Method of manufacturing an inorganic molded product
US6361725B1 (en) * 1999-05-25 2002-03-26 Edward Susany Method of molding artificial ceramic fiber construction panels
US6451235B1 (en) 2000-04-26 2002-09-17 Thomas L. Owens Forming a three dimensional fiber truss from a fiber slurry
US20050023718A1 (en) * 2003-07-31 2005-02-03 Sara Lee Corporation Apparatus and method for molding spacer fabric or lofted material
US20100227530A1 (en) * 2003-07-31 2010-09-09 Gloria Falla Method of Molding a Breast-Receiving Cup for A Garment
US8475894B2 (en) 2008-03-28 2013-07-02 Nobel Environmental Technologies Corp. Engineered molded fiberboard panels, methods of making the panels, and products fabricated from the panels
WO2018152973A1 (zh) * 2017-02-21 2018-08-30 南通中菱绝缘材料有限公司 一种相变式绝缘纸干燥机构及其干燥方法

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57166B2 (de) * 1974-03-25 1982-01-05
JPS5157709A (ja) * 1974-11-18 1976-05-20 Taisei Corp Suikoseimukishitsuzairyono seikeiho
JPS529018A (en) * 1975-07-11 1977-01-24 Ube Sureeto Kougiyou Kk Method of producing building materials
JPS5451956U (de) * 1977-09-16 1979-04-10
JPS5573504A (en) * 1978-11-27 1980-06-03 Nippon Sheet Glass Co Ltd Preparation of glass fiber reinforcing cement product
JPS56144912A (en) * 1980-04-15 1981-11-11 Tokai Concrete Kogyo Kk Manufacture of cement product and gyps product, on both surface thereof solid pattern is formed
CH661470A5 (de) * 1983-12-09 1987-07-31 Bell Ag Maschf Verfahren zum verdichten von gewellten faserzementplatten.
JPS6048407U (ja) * 1984-07-24 1985-04-05 伊藤　恭司 セメント半濁廃棄物汚泥を用いる成形品の成形装置
DE3503949A1 (de) * 1985-02-06 1986-08-07 Alois 5650 Solingen Wolscht Vorrichtung und verfahren zur herstellung vorzugsweise duennschaliger koerper aus wasserreichen suspensionen sowie damit hergestellter koerper
GB2284380A (en) * 1993-11-09 1995-06-07 Bowater Plc Process for making pulp mouldings
DE19717606C2 (de) * 1997-04-25 2001-03-15 Eternit Ag Verfahren und Vorrichtung zum Herstellen von Formstücken aus Faserzement
CN112160191B (zh) * 2020-07-31 2023-03-10 广西福斯派环保科技有限公司 复合拼接式纸塑模具及纸塑产品成型方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US200392A (en) * 1878-02-19 Improvement in apparatus for pressing butter
US2915801A (en) * 1957-12-05 1959-12-08 Mc Graw Edison Co Apparatus for forming plastic clay bodies
US3099061A (en) * 1961-07-06 1963-07-30 Marchioli Giorgio Apparatus for shaping and compressing sheets of asbestos cement into particles of complex configuration
US3158904A (en) * 1962-02-16 1964-12-01 Dunlop Rubber Co Vacuum-forming machines
US3307236A (en) * 1963-02-19 1967-03-07 Sirera Sebastian Bonet Machine for the manufacture of asbestos cement pieces
US3450807A (en) * 1967-06-26 1969-06-17 Dow Chemical Co Thermoplastic sheet formation
US3608152A (en) * 1970-05-18 1971-09-28 Desma Werke Gmbh Mold carrier for injection or vulcanizing molds

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US200392A (en) * 1878-02-19 Improvement in apparatus for pressing butter
US2915801A (en) * 1957-12-05 1959-12-08 Mc Graw Edison Co Apparatus for forming plastic clay bodies
US3099061A (en) * 1961-07-06 1963-07-30 Marchioli Giorgio Apparatus for shaping and compressing sheets of asbestos cement into particles of complex configuration
US3158904A (en) * 1962-02-16 1964-12-01 Dunlop Rubber Co Vacuum-forming machines
US3307236A (en) * 1963-02-19 1967-03-07 Sirera Sebastian Bonet Machine for the manufacture of asbestos cement pieces
US3450807A (en) * 1967-06-26 1969-06-17 Dow Chemical Co Thermoplastic sheet formation
US3608152A (en) * 1970-05-18 1971-09-28 Desma Werke Gmbh Mold carrier for injection or vulcanizing molds

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4162877A (en) * 1976-09-23 1979-07-31 Hawker Siddeley Canada Ltd. Method and apparatus for consolidating particle board
US4544344A (en) * 1983-02-05 1985-10-01 Werzalit-Werke, J.F.Werz Kg Arrangement for producing shaped parts
US4616991A (en) * 1985-08-15 1986-10-14 Her Majesty The Queen In Right Of The Province Of Alberta As Represented By The Minister Of Energy And Natural Resources Apparatus for the manufacture of a corrugated wafer board panel
AU611053B2 (en) * 1985-08-15 1991-05-30 Alberta Research Council Inc. Process and apparatus for the manufacture of a corrugated wafer board panel
US6013215A (en) * 1998-03-10 2000-01-11 Mitsui Wood Systems, Inc. Method of manufacturing an inorganic molded product
US6361725B1 (en) * 1999-05-25 2002-03-26 Edward Susany Method of molding artificial ceramic fiber construction panels
US6451235B1 (en) 2000-04-26 2002-09-17 Thomas L. Owens Forming a three dimensional fiber truss from a fiber slurry
US20050023718A1 (en) * 2003-07-31 2005-02-03 Sara Lee Corporation Apparatus and method for molding spacer fabric or lofted material
US20100227530A1 (en) * 2003-07-31 2010-09-09 Gloria Falla Method of Molding a Breast-Receiving Cup for A Garment
US8262434B2 (en) 2003-07-31 2012-09-11 BBI Branded Apparel Enterprises, LLC Method of molding a breast-receiving cup for a garment
US8475894B2 (en) 2008-03-28 2013-07-02 Nobel Environmental Technologies Corp. Engineered molded fiberboard panels, methods of making the panels, and products fabricated from the panels
WO2018152973A1 (zh) * 2017-02-21 2018-08-30 南通中菱绝缘材料有限公司 一种相变式绝缘纸干燥机构及其干燥方法

Also Published As

Publication number Publication date
GB1408590A (en) 1975-10-01
BE790805A (nl) 1973-02-15
NL7214763A (de) 1973-06-13
CH556230A (de) 1974-11-29
JPS4866114A (de) 1973-09-11
DE2162030A1 (de) 1973-06-14
BR7208656D0 (pt) 1973-09-13
ZA728719B (en) 1973-08-29
DE2162030C3 (de) 1979-09-20
IT969280B (it) 1974-03-30
ES409343A1 (es) 1976-10-16
JPS5421850B2 (de) 1979-08-02
DE2162030B2 (de) 1979-01-25

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