CN1007275B - Method for manufacturing multilayer board - Google Patents
Method for manufacturing multilayer boardInfo
- Publication number
- CN1007275B CN1007275B CN 85105202 CN85105202A CN1007275B CN 1007275 B CN1007275 B CN 1007275B CN 85105202 CN85105202 CN 85105202 CN 85105202 A CN85105202 A CN 85105202A CN 1007275 B CN1007275 B CN 1007275B
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- CN
- China
- Prior art keywords
- net
- pulp suspension
- lining
- lining net
- forms
- 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
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Abstract
The present invention relates to a method for manufacturing a multilayer paper plate. In the method, a paper pulp suspension which forms a surface layer is conveyed onto a horizontal section of a first lining net (an inner lining net); a paper pulp suspension which forms an intermediate layer is supplied onto a formed paper web layer at a wedge-shaped gap formed by the first lining net and a second lining net (an outer lining net). Two paper webs between the two lining nets are guided to pass through a cambered surface. Then, the first lining net and two paper web layers lie against a third lining net, and are guided onto the horizontal section which is supplied with the water pulp suspension forming another surface layer. The concentration and the consistency of the paper pulp suspension which forms the intermediate layer is much larger than those of the suspension which forms the surface layer.
Description
The relevant a kind of method of making couch board of the present invention in this method, the pulp suspension that forms a superficial layer, is transported to the first lining net (being the back boxing net) and gets on; The pulp suspension that forms the intermediate layer, the wedge gap place in the first lining net and second lining net (the being the outer lining net) formation is transported to first paper web that has formed and gets on; Two lining net and the ply of papers between them are directed passing through from a curved surfaces, and the first lining net and two paper web layers are directed then, near one the 3rd lining net, form another superficial layer pulp suspension online supply of this lining.
In No. the 821194th, Finnish patent application, disclosed a kind of manufacture method of couch board.But according to this patent application case, do not disturb the formation of paper web, just can not be transported to the big pulp suspension of moisture in the first lining net and second space that serves as a contrast between the net and go, the grammes per square metre in intermediate layer just is restricted like this.
One object of the present invention is a kind of method that proposes to make couch board, and there is high gram weight in the intermediate layer that flow box provides in this method.
A sizable special character of characteristics of the present invention is the pulp suspension to the online formation intermediate layer of supplying with of lining, and the pulp suspension that likens superficial layer to has high a lot of density.
The density of pulp suspension of doing the intermediate layer is preferably 3 to 6% between 2 to 15%.When supplying with on the paper web layer with the pulp suspension of high density, the paper web layer is not played deleterious effects, the moisture content that need remove is few, thereby has reduced the space and the energy of mechanical needs.
Method of the present invention can produce the high-adhesive-strength and the high bulk of paper web interlayer.
Because forming the pulp suspension in intermediate layer is to supply with under very high density, so the fibre structure of the paper web that forms is different with the fibre structure of superficial layer.The Z direction strength of the tridimensional network that the forms vertical direction intensity of paper plane (promptly with respect to) is very high.Moisture content is easy to that drop goes out from pulp layer.And little by the amount of flow of paper, compare with traditional paper process, the hold facility of fiber fines is strong.
Hereinafter with reference to the accompanying drawings the present invention is described in detail.With the summary figure implementation method of apparatus of the present invention is set forth in the accompanying drawings.
The couch board maker that illustrates in the accompanying drawing comprises back boxing net 1, is guided on the surface 3 of dehydration roll 2 to pass through; An outer lining net 4 is arranged in addition, also be directed passing through from dehydration roll 2.The back boxing net arrives dehydration roll from breast roll 5 basically in the horizontal direction.Outer lining net 4 and back boxing net 1 forms one towards gap 6 that dehydration roll narrows down gradually.Through behind the dehydration roll, two lining nets move downward, and the outer lining net separates with the back boxing net.The back boxing net is folded to by roller 7, against the 3rd time lining one section of net 8.This lining network segment moves basically in the horizontal direction.
Form the pulp suspension of cardboard first surface layer,, on the first lining net 1, supply with by the flow box 9 that is placed on breast roll 5 places.This flow box is supplied with traditional density scope 0.1-1.5%.Water analysis drop direction in the lining net horizontal segment as shown by arrow A, promptly downwards.High density flow box 10 is placed on the place ahead, gap that the first and second lining nets form, and the pulp suspension that forms intermediate layer 11, delivers to the paper web 12 that has formed and gets on.High density flow box the work density between 2-15%, preferably between 3-6%.
High density flow box can be used as United States Patent (USP) the 4th, 021, the 296 paper pulp feedwaies that disclosed.
At dehydration roll 2 places, paper web layer 11 and 12 is clipped between back boxing net and the outer lining net and advances, and the dehydration direction promptly makes progress as shown by arrow B.
Form the pulp suspension of another one superficial layer 13, by the flow box 14 with the work of traditional density scope, supply with on a lining net 8, the dehydration of this lining net is with the direction of arrow C indication, and is promptly downward, carries out.Each paper web layer is bonding on the horizontal segment of lining net, then the paper web 15 that contains three paper web layers, with known method, is directed in the press section of cardboard machine and the drying section and goes, and is further processed.
The present invention is not subject to the implementation method of narrating above, above only does to propose for example, and in the inventive concept scope that the claim of patent sets, can also make some modifications or application process.For example can be with a kind of arc boots spare, have level and smooth or the surface of rib ridge is arranged, be installed in the place ahead of dehydration roll.Between slewing rollers and flow box 14, or between flow box 9 and 10, increase by one the 4th flow box, serving as a contrast on the horizontal segment of net 8 down, another intermediate layer is provided.The surface of dehydration roll can be level and smooth, or has groove.
Claims (2)
1, a kind of manufacture method of couch board paper web, it is online that the pulp suspension of handle formation superficial layer is transported to first back boxing in this method; The pulp suspension that forms the intermediate layer, wedge gap or front in the first lining net and second lining net (the being outer layer net) formation are transported to the above-mentioned superficial layer that has formed and get on; These two serve as a contrast nets and are clipped in their middle paper web layers, all be directed passing through from a curved surfaces, the first lining net and two paper web layers all are directed relying on one the 3rd lining net then, on the net the pulp suspension that forms another superficial layer is carried up at this 3rd lining, the pulp suspension that it is characterized in that forming the intermediate layer is to use than the pulp suspension that forms superficial layer to have high a lot of density to supply with.
2, the method described in 1 of claim the, the density of pulp suspension that it is characterized in that forming the intermediate layer is between 2-15%, and best density is 3-6%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85105202 CN1007275B (en) | 1985-07-08 | 1985-07-08 | Method for manufacturing multilayer board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85105202 CN1007275B (en) | 1985-07-08 | 1985-07-08 | Method for manufacturing multilayer board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85105202A CN85105202A (en) | 1987-01-14 |
| CN1007275B true CN1007275B (en) | 1990-03-21 |
Family
ID=4794322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85105202 Expired CN1007275B (en) | 1985-07-08 | 1985-07-08 | Method for manufacturing multilayer board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1007275B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1314857C (en) * | 2005-02-28 | 2007-05-09 | 陈建辉 | Multi-layer toilet paper forming device and process thereof |
| SG10201502923RA (en) * | 2010-04-14 | 2015-06-29 | Spectra Kote Corp | Liner/medium/paper for laminated panel |
| EP2841644B1 (en) * | 2012-04-27 | 2016-11-23 | Valmet Technologies, Inc. | Forming section |
-
1985
- 1985-07-08 CN CN 85105202 patent/CN1007275B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN85105202A (en) | 1987-01-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |