EP0211842A1 - Method of making fibre mats - Google Patents
Method of making fibre matsInfo
- Publication number
- EP0211842A1 EP0211842A1 EP85902177A EP85902177A EP0211842A1 EP 0211842 A1 EP0211842 A1 EP 0211842A1 EP 85902177 A EP85902177 A EP 85902177A EP 85902177 A EP85902177 A EP 85902177A EP 0211842 A1 EP0211842 A1 EP 0211842A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fibre
- fibres
- air
- fibre material
- amount
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
- B27N3/14—Distributing or orienting the particles or fibres
Definitions
- This invention relates to a method of making fibre mats to be used as carcasse in laminate by impregnation and forming of fibre material.
- the laminate in question consists of a carcasse and surface layers and may have technical as well as decorative function.
- the carcasse in the laminate is assembled of a number of sheets of kraft paper, which have been impregnated preferably with phenol resin. At laminates of great thickness which are used as load-carrying structures, the number of paper sheets comprised therein is great.
- the present invention renders it possible that the manufacture of laminate can be carried out in a simpler and less expensive way.
- the carcasse or carrying structure in the laminate can be made in the form of a fibre mat direcly from the fibre material, so that no paper sheets are required.
- the fibre material can be of various kinds, for example cellulose fibres or artificial fibres, but preferably fibres of cellulose-containing material are used.
- the starting material are wood chips. They are washed in a chip washer 1 and thereafter fed into a refiner 2 via a preheater 3.
- the refiner 2 is of the type disc-refiner with a pressurized refiner housing 4.
- the object is to manufacture a fibre pulp which is substantially free of shives.
- Impregnation chemicals are added in the blow conduit 5 and/or immediately prior to the refining.
- the chemicals include a suitable binder such as phenol resin in an amount of 10-50, preferably 20-50% by weig of the fibre amount. A small amount of paraffin, up to
- the impregnation chemicals preferably are supplied in the blow conduit 5 where high speed and turbulence prevail in the fibre pulp, whereby the resin is effectively distributed on the single fibres.
- the impregnated fibre material is transferred from the blow conduit 5 to a drier 6, which comprises a fan 7 and a heating device 8 for heating air to a temperature below the curing temperature of the phenol resin (at maximum 200°C, preferably below 160°C).
- the hot air and the fibre pulp are transported through a drier pipe 9, in which the drying takes place.
- the staying time in the drier pipe 9 is very short. By controlling the air temperature and staying time, the desired dry content of the fibre material can be obtained.
- the solvent supplied with the impregnation medium and also the fibre moisture evaporate.
- the drier pipe 9 opens into a cyclone 10 where air and fibres are separated.
- Air outgoing from the cyclone normally has a temperarure between 60 and 85oC. Depending on the impregnation chemicals used, this air also can cont ain substances which must not be emitted freely.
- gases are released at the drying which in certain cases must be recovered. Part of the air can then be recirculated to the inlet of the drier fan 7, and the remaining part is directed to combustion.
- a temperature of 600oC is required. Suitable equipment for this purpose is commercially available.
- the fibre material separated in the cyclone 10 is weighed on a pair of fibre scales 11, preferably of the type belt weigher.
- the fibre amount weighed determine the supply of impregnation agent.
- the fibre material is transported from there in an air transport conduit to a storage container 12, into which the fibre material is fed via an air separation cyclone 13. From said container 12 the fibre material is passed by means of an air transport conduit to a forming station 14, for example of the type shown in SE-PS 7510795-3.
- the forming station can be a pneumatic or mechanical one and adjustable to different thicknesses.
- the forming station 14 comprises a distribution chamber 15 and a conveyor belt 16 in the form of a wire, on which the fibres are deposited.
- the transport air is sucked through the belt by means of a fan 17.
- An additional cyclone 18 and fans are provided for separating and returning fibres following along, which fibres are subjected to repeated distribution in the forming station 14. This arrangement implies that the mat formed can meet reasonable requirements on forming accuracy (surface layer variations).
- the forming is followed by a continuous prepressing in a press 19, preferably a belt prepress of conventional design for removing remaining air from the fibre mat and for consolidating the mat so that it can be handled in subsequent process steps.
- Loose fibres are also returned from the prepressing to be used again in the forming station.
- the fibre mat is thereafter divided into desired dimensions by means of longitudinal and transverse saws 20 and, respectively, 21.
- a metal detector 22 preferably can be located in connection to the saws.
- a plate prepress may also be provided before the laminate press. In said prepress heat may possibly be supplied to the fibre mat in order to shorten the heating time in the subsequent laminate press.
- Fibre mats which are rejected, for example because of nonuniform forming at the start, are passed to a return bin 22 where the material is torn and returned to the process.
- the fibre material is passed to a special reject container for treatment.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Paper (AREA)
- Laminated Bodies (AREA)
- Multicomponent Fibers (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Nonwoven Fabrics (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
Une natte en matériau fibreux, utilisée comme carcasse dans des laminés, est fabriquée en exposant et en imprégnant les fibres. Celles-ci sont ensuite séchées et façonnées de manière à obtenir une bande en les déposant sur une courroie mobile (câble). Le formage final de la bande en une natte fibreuse est exécuté en la comprimant en une étape au moins.A fibrous material mat, used as a carcass in laminates, is made by exposing and impregnating the fibers. These are then dried and shaped so as to obtain a strip by depositing them on a moving belt (cable). The final forming of the strip into a fibrous mat is carried out by compressing it in at least one step.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8402418 | 1984-05-04 | ||
SE8402418A SE446996B (en) | 1984-05-04 | 1984-05-04 | PROCEDURE FOR MANUFACTURING MATERIAL OF FIBER MATERIAL FOR USING LAMINATE FILM |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0211842A1 true EP0211842A1 (en) | 1987-03-04 |
Family
ID=20355758
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85902177A Withdrawn EP0211842A1 (en) | 1984-05-04 | 1985-04-01 | Method of making fibre mats |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0211842A1 (en) |
JP (1) | JPS61502046A (en) |
AU (1) | AU579629B2 (en) |
BR (1) | BR8507181A (en) |
CA (1) | CA1278470C (en) |
DK (1) | DK158237C (en) |
FI (1) | FI864465A0 (en) |
NO (1) | NO860014L (en) |
NZ (1) | NZ211528A (en) |
SE (1) | SE446996B (en) |
WO (1) | WO1985005065A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE461962B (en) * | 1987-12-16 | 1990-04-23 | Sunds Defibrator Ind Ab | SET AND DEVICE FOR MANUFACTURING FIBER BOARD DISKS |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3371137A (en) * | 1968-02-27 | Defibrator Ab | Method in the manufacture of fiber board | |
US2912041A (en) * | 1954-01-28 | 1959-11-10 | H D Boggs Company Ltd | Core compactor |
US3071822A (en) * | 1959-03-03 | 1963-01-08 | Bowater Board Company | Method and apparatus for forming a mat |
US3494992A (en) * | 1968-02-01 | 1970-02-10 | Conwed Corp | Method of producing a mat from an air suspension of fibers and liquid |
US3642554A (en) * | 1970-02-16 | 1972-02-15 | Certain Teed Prod Corp | Closed mat forming system |
-
1984
- 1984-05-04 SE SE8402418A patent/SE446996B/en not_active IP Right Cessation
-
1985
- 1985-03-21 NZ NZ211528A patent/NZ211528A/en unknown
- 1985-04-01 WO PCT/SE1985/000153 patent/WO1985005065A1/en not_active Application Discontinuation
- 1985-04-01 EP EP85902177A patent/EP0211842A1/en not_active Withdrawn
- 1985-04-01 BR BR8507181A patent/BR8507181A/en unknown
- 1985-04-01 JP JP60501765A patent/JPS61502046A/en active Pending
- 1985-04-01 AU AU42192/85A patent/AU579629B2/en not_active Ceased
- 1985-04-18 CA CA000479423A patent/CA1278470C/en not_active Expired - Fee Related
- 1985-12-09 DK DK568085A patent/DK158237C/en not_active IP Right Cessation
-
1986
- 1986-01-03 NO NO860014A patent/NO860014L/en unknown
- 1986-11-03 FI FI864465A patent/FI864465A0/en not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO8505065A1 * |
Also Published As
Publication number | Publication date |
---|---|
DK158237B (en) | 1990-04-16 |
DK568085A (en) | 1985-12-09 |
FI864465A (en) | 1986-11-03 |
SE8402418D0 (en) | 1984-05-04 |
FI864465A0 (en) | 1986-11-03 |
BR8507181A (en) | 1987-04-22 |
AU4219285A (en) | 1985-11-28 |
SE446996B (en) | 1986-10-20 |
CA1278470C (en) | 1991-01-02 |
NO860014L (en) | 1986-01-03 |
DK568085D0 (en) | 1985-12-09 |
DK158237C (en) | 1990-09-24 |
AU579629B2 (en) | 1988-12-01 |
WO1985005065A1 (en) | 1985-11-21 |
JPS61502046A (en) | 1986-09-18 |
SE8402418L (en) | 1985-11-05 |
NZ211528A (en) | 1987-02-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19861009 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI NL SE |
|
ITCL | It: translation for ep claims filed |
Representative=s name: BARZANO' E ZANARDO ROMA S.P.A. |
|
TCAT | At: translation of patent claims filed | ||
TCNL | Nl: translation of patent claims filed | ||
EL | Fr: translation of claims filed | ||
DET | De: translation of patent claims | ||
17Q | First examination report despatched |
Effective date: 19880509 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SUNDS DEFIBRATOR INDUSTRIES AKTIENBOLAG |
|
RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SUNDS DEFIBRATOR INDUSTRIES AKTIEBOLAG |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19901130 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: TOLL, HARRY |