SE502518C2 - Methods and apparatus for bonding particles - Google Patents
Methods and apparatus for bonding particlesInfo
- Publication number
- SE502518C2 SE502518C2 SE9102549A SE9102549A SE502518C2 SE 502518 C2 SE502518 C2 SE 502518C2 SE 9102549 A SE9102549 A SE 9102549A SE 9102549 A SE9102549 A SE 9102549A SE 502518 C2 SE502518 C2 SE 502518C2
- Authority
- SE
- Sweden
- Prior art keywords
- particles
- glue
- adhesive
- electrostatic charge
- pipeline
- Prior art date
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
- B27N1/00—Pretreatment of moulding material
- B27N1/02—Mixing the material with binding agent
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Manufacturing Of Micro-Capsules (AREA)
- Paper (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
502 518 2 Föreliggande uppfinning utgör en lösning av ovan- stående problem samtidigt som ytterligare fördelar erhålles. The present invention provides a solution to the above problems while providing additional benefits.
Uppfinningen innebär att lim och partiklar före blandningen pá ett kontrollerat sätt ges olika elektrostatisk laddning så att en stark attraktionskraft mellan lim och partiklar uppstår. Uppfinningens närmare kännetecken framgår av patent- kraven.The invention means that glue and particles are given a different electrostatic charge before mixing in a controlled manner so that a strong attractive force between glue and particles arises. The more detailed features of the invention appear from the patent claims.
Eftersom partikelmängden normalt är större än lim- mängden är det särskilt lämpligt att lägga en kontrollerad och styrbar laddning pà limmet. Laddningen av partiklarna kan ske under transporten före blandningsplatsen.Since the amount of particles is normally greater than the amount of glue, it is particularly suitable to apply a controlled and controllable charge to the glue. The particles can be charged during transport before the mixing site.
Limmet kan vara i flytande form eller pulverform och av den typ som angetts ovan. Laddning av limmet kan göras medelst en extern strömkälla eller genom friktionsladdning.The adhesive may be in liquid or powder form and of the type indicated above. Charging of the adhesive can be done by means of an external power source or by friction charging.
Friktionsladdning kan användas vid pulverformigt lim och innebär att limmet laddas genom friktion mot transport- ledningen, lämpligen en plastledning. Lämplig storlek på laddningen är 5 000 - 100 000 V.Frictional charge can be used with powdered glue and means that the glue is charged by friction against the transport line, preferably a plastic line. The appropriate size of charge is 5,000 - 100,000 V.
Generellt ger sättet enligt uppfinningen en större flexibilitet vad beträffar den plats i processen där belim- ningen skall ske.In general, the method according to the invention provides greater flexibility with regard to the place in the process where the gluing is to take place.
Inblandning av flytande lim enligt uppfinningen ger till skillnad från konventionell blásledningsbelimning en möjlighet att tillsätta limmet i en position där temperaturen är lägre än i blásledningen vilket ger mindre förhärdning av limmet och därigenom mindre limförbrukning.Mixing of liquid glue according to the invention, in contrast to conventional blast line gluing, provides an opportunity to add the glue in a position where the temperature is lower than in the blow line, which gives less hardening of the glue and thereby less glue consumption.
Inblandning av torrt lim enligt uppfinningen inne- bär att den totala energiförbrukningen kan minskas genom att ingen energi behöver tillföras för att avdunsta det vatten som finns i det flytande limmet. Detta innebär en fördel även om limmet blir dyrare genom att man vid limframställningen kan behöva torka limmet fràn exempelvis 60 % torrhalt till 90 % torrhalt. Energibesparing pá uppemot 10 % jämfört med konventionell blàsledningsbelimning kan erhållas. Detta mot- svarar också en 10 % mindre tork eller 10 % större kapacitet pá befintlig tork. 502 518 3 Uppfinningen skall nedan beskrivas i anslutning till en utföringsform som visas i figuren.Incorporation of dry glue according to the invention means that the total energy consumption can be reduced by no need to supply energy to evaporate the water contained in the liquid glue. This means an advantage even if the glue becomes more expensive in that during glue production it may be necessary to dry the glue from, for example, 60% dry content to 90% dry content. Energy savings of up to 10% compared to conventional blower line gluing can be obtained. This also corresponds to a 10% smaller dryer or 10% larger capacity of an existing dryer. The invention will be described below in connection with an embodiment shown in the figure.
Partiklar i form av fibrer transporteras genom en rörledning 1 med en strömningshastighet av 25 - 40 m/s.Particles in the form of fibers are transported through a pipeline 1 with a flow velocity of 25 - 40 m / s.
Limmet tillföres genom en tillförselledning 2 till fiber- materialet i ledningen 1 lämpligen på så sätt att limmet möter fiberflödet. Medelst en extern reglerbar strömkålla 3 ges limmet den önskade laddningen. Lämpligen anordnas insprutningen av limmet omedelbart före en krök pá rörledningen 1 för att möjliggöra ett enkelt arrangemang för den erforderliga utrustningen såsom visas i figuren.The adhesive is supplied through a supply line 2 to the fibrous material in the line 1 suitably in such a way that the adhesive meets the fiber flow. By means of an externally adjustable current source 3, the adhesive is given the desired charge. Suitably the injection of the adhesive is arranged immediately before a bend on the pipeline 1 to enable a simple arrangement of the required equipment as shown in the figure.
Alternativt kan laddningen av limmet åstadkommas genom s k friktionsladdning. Sådan laddning kan göras genom lufttransport av limmet i en plastledning. Laddningen kan då regleras genom strömningshastigheten och ledningens längd.Alternatively, the charging of the adhesive can be accomplished by so-called friction charging. Such charging can be done by air transporting the adhesive in a plastic pipe. The charge can then be regulated by the flow rate and the length of the line.
Styrningen av limtillförseln kan göras på konven- tionellt sätt.The control of the glue supply can be done in a conventional manner.
Det kan vara lämpligt att utforma den del 4 av rör- ledningen 1 där insprutningen av limmet sker av isolerande material såsom plast, porslin, trä eller dylikt. Därigenom avleds inte den laddning som lim respektive partiklar har.It may be appropriate to design the part 4 of the pipeline 1 where the injection of the adhesive takes place of insulating materials such as plastic, porcelain, wood or the like. This does not divert the charge that glue or particles have.
Uppfinningen är givetvis inte begränsad till de redovisade utförandena utan kan varieras inom ramen för upp- finningstanken.The invention is of course not limited to the reported embodiments but can be varied within the scope of the inventive concept.
Claims (10)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9102549A SE502518C2 (en) | 1991-09-05 | 1991-09-05 | Methods and apparatus for bonding particles |
DE69205772T DE69205772T2 (en) | 1991-09-05 | 1992-07-30 | Method and device for coating particles with glue. |
EP92112993A EP0530501B1 (en) | 1991-09-05 | 1992-07-30 | Method and device for glue coating of particles |
AT92112993T ATE129660T1 (en) | 1991-09-05 | 1992-07-30 | METHOD AND DEVICE FOR COVERING PARTICLES WITH GLUE. |
ES92112993T ES2079111T3 (en) | 1991-09-05 | 1992-07-30 | METHOD AND DEVICE FOR COATING PARTICLES WITH GLUE. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9102549A SE502518C2 (en) | 1991-09-05 | 1991-09-05 | Methods and apparatus for bonding particles |
Publications (3)
Publication Number | Publication Date |
---|---|
SE9102549D0 SE9102549D0 (en) | 1991-09-05 |
SE9102549L SE9102549L (en) | 1993-03-06 |
SE502518C2 true SE502518C2 (en) | 1995-11-06 |
Family
ID=20383626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9102549A SE502518C2 (en) | 1991-09-05 | 1991-09-05 | Methods and apparatus for bonding particles |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0530501B1 (en) |
AT (1) | ATE129660T1 (en) |
DE (1) | DE69205772T2 (en) |
ES (1) | ES2079111T3 (en) |
SE (1) | SE502518C2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1296755B1 (en) * | 1997-11-10 | 1999-07-27 | E T A S R L | PROCEDURE FOR THE DISTRIBUTION OF AN AGGLOMERATING AGENT ON EACH OTHER INCOHERENT PARTICLES. |
DE10153593B4 (en) * | 2001-11-02 | 2005-11-17 | Fritz Egger Gmbh & Co | Apparatus and method for wetting wood fibers with a binder fluid |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3143895C2 (en) * | 1981-11-05 | 1985-01-17 | Triangel Spanplatten KG, 3177 Sassenburg | Method and device for applying glue to particulate material in the form of chips, fibers or the like. |
-
1991
- 1991-09-05 SE SE9102549A patent/SE502518C2/en not_active IP Right Cessation
-
1992
- 1992-07-30 DE DE69205772T patent/DE69205772T2/en not_active Expired - Fee Related
- 1992-07-30 ES ES92112993T patent/ES2079111T3/en not_active Expired - Lifetime
- 1992-07-30 AT AT92112993T patent/ATE129660T1/en not_active IP Right Cessation
- 1992-07-30 EP EP92112993A patent/EP0530501B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES2079111T3 (en) | 1996-01-01 |
EP0530501A1 (en) | 1993-03-10 |
EP0530501B1 (en) | 1995-11-02 |
SE9102549L (en) | 1993-03-06 |
DE69205772T2 (en) | 1996-04-04 |
DE69205772D1 (en) | 1995-12-07 |
SE9102549D0 (en) | 1991-09-05 |
ATE129660T1 (en) | 1995-11-15 |
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