CN1042746A - The method and apparatus of producing elastic paper by use of radial deviation - Google Patents
The method and apparatus of producing elastic paper by use of radial deviation Download PDFInfo
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- CN1042746A CN1042746A CN 88107788 CN88107788A CN1042746A CN 1042746 A CN1042746 A CN 1042746A CN 88107788 CN88107788 CN 88107788 CN 88107788 A CN88107788 A CN 88107788A CN 1042746 A CN1042746 A CN 1042746A
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Abstract
A kind of method and apparatus that is used to make extensible paper, this method is in paper-making process, to send into the poor cylinder group in footpath at paper machine rear portion by the half-dried paper that anterior drying cylinder comes out, or the poor gear train in footpath, the diameter of each drying cylinder reduces or the gear diameter of transmission drying cylinder increases gradually gradually in the cylinder group, and this version can make paper obtain nature when drying to shrink, and the percentage elongation of paper rises to 4～6%, double than plain paper, thereby improved the elasticity and the obdurability of paper.The present invention need not to add a cover elasticity treatment facility, and existing paper machine is easy to repacking, and small investment is operated identically with the common paper machine, promotes the use of easily.
Description
The invention belongs to the manufacture method of extensible paper and copy the paper equipment and technology.
Extensible paper is exactly to have the paper that surpasses the common paper percentage elongation exponentially, because percentage elongation improves, the absorption merit of paper before breaking increases, and paper De Qiang Toughness also improves thereupon.The method that has at present some to make extensible paper abroad, for example: glue blanket method, air cushion process, roll method (United States Patent (USP) 3104197) is scraped the skill in using a kitchen knife in cookery (United States Patent (USP) 3163575), rill method (BP 917074) and one-tenth paper Retreatment method.Wherein, glue blanket method and air cushion method are gone into operation more.Glue blanket method is to finish between the drying cylinder of a glue blanket and a light-plated with half-dried page pressurized in utilization.This method needs the wide blanket of glue for no reason of a long narrow table rice and will increase adhesive tape Qi Bei equipment on original paper machine.Air cushion process is to utilize the dry half-dried paper of high-temperature hot air, and blow page to reel-up with this hot-air, this is a kind of method of production half extensible paper, becoming the percentage elongation of paper is 4～6%, percentage elongation 1.5～2.5% than common paper exceeds more than one times, and this method needs the very big hot-air producing equipment of a pool-size.Above-mentioned two kinds of methods all need to add a cover elasticity treatment facility, more complicated, investment is big, and additive method is as scraping the skill in using a kitchen knife in cookery, and it is when improving the paper percentage elongation, the combination of page fiber is damaged, greatly reduce the intensity of page, therefore, scrape the skill in using a kitchen knife in cookery and can not be used to make sack kraft paper, can only make toilet paper, tissue.In a word, the method for above-mentioned existing production extensible paper exists difficulty on promoting.
Sack kraft paper requires than higher on strong Toughness, domestic at present, the outer needlebush paper pulp that adopts mostly is as the sack kraft paper raw material, China is because needlebush is very in short supply, just beginning the sixties, the someone attempts to replace softwood pulp to produce sack kraft paper with straw pulp, but fail so far to realize, reason is straw pulp De Qiang Toughness, tearing strength and air permeability are all not as good as softwood pulp, therefore, solve replacement problem, straw pulp must be made the elasticity sack kraft paper, increase the percentage elongation of paper, improve strong Toughness, except solving this important technological problems of elasticity sack kraft paper, make half elasticity straw pulp sack kraft paper reach the requirement of common softwood pulp sack kraft paper, also should be in slurrying, technical the making improvements of pulling an oar.
The object of the invention provides a kind of method and apparatus of making extensible paper, and this method need not to add a cover elasticity treatment facility, can do some repacking on existing paper machine, and equipment is simple, small investment, and method of operating is identical with the common paper machine, and the workman grasps easily.
For achieving the above object, the present invention adopts following method and apparatus, method is: paper pulp is the wet end of process paper machine earlier, press section and anterior drying cylinder, after coming out to be in half-dried paper that the initial stage shrinks and enter the poor gear train of poor cylinder group in footpath or footpath at paper machine rear portion from anterior drying cylinder, deliver to cooling cylinder and coiling machine by deflector roll again.
The equipment that is used for said method, except that commonly used copying the paper equipment, (same group of drying cylinder diameter is identical with the isometrical cylinder group of existing paper machine, the gear diameter of transmission drying cylinder is also identical) change poor cylinder group in footpath or the poor gear train in footpath (in the cylinder group each drying cylinder diameter reduce gradually or the gear diameter of transmission drying cylinder increases gradually) into, make paper in drying course, obtain nature and shrink.
The invention will be further described below in conjunction with accompanying drawing:
Fig. 1: the poor drying cylinder elasticity in footpath is handled schematic diagram
Fig. 2: the poor gear elasticity in footpath is handled schematic diagram
Among Fig. 1, the half-dried paper (9) that the initial stage that is in shrinks is introduced the poor cylinder group in footpath through deflector roll (10), cylinder group has 8 drying cylinders, be sequence number (1), (2), (3), (4), (5), (6), (7), (8), behind 8 drying cylinders, paper produces nature and shrinks, and percentage elongation is improved, the paper that leaves drying cylinder (8) becomes dried paper (12), and dried paper (12) is delivered to cooling cylinder (11) and coiling machine (not drawing among the figure) through deflector roll (10) again.
According to above-mentioned technology, each drying cylinder diameter in the cylinder group is evenly successively decreased, promptly the diameter lapse rate is so that (setting value of natural shrinkage factor)/(N-1) formula is represented, and wherein N is the drying cylinder number, and each cylinder diameter is respectively φ; φ-Δ φ; φ-2 Δ φ; Wherein Δ φ=(natural shrinkage factor setting value)/(N-1) * φ diameter evenly successively decreases, and to help paper stable, shrinks evenly.
Among Fig. 2, technology is identical with Fig. 1, and (9) for being in the half-dried paper of initial stage contraction, (10) are deflector roll, and each drying cylinder diameter is constant in the cylinder group, but has changed the gear number of teeth coaxial with drying cylinder.Among the figure, 8 cylinders (1) (2) (3) (4) (5) (6) (7) (8), (13) for the gear of transmission drying cylinder, the number of teeth of gear are respectively: first cylinder: the number of teeth 182; 2nd, the 3rd cylinder: the number of teeth 181; 4th, the 5th cylinder: the number of teeth 182; 6th, the 7th cylinder: the number of teeth 183; The 8th cylinder: the number of teeth 184 is for reducing graded, the same with the number of teeth maintenance of two cylinders.Generally speaking, the drying cylinder number can achieve the goal between 6～8, the drying cylinder number very little, the alternation rate is excessive, is difficult to obtain the stable operation of paper machine, more than 8 drying cylinders, the alternation rate is reduced, and more helps paper machine operation.
The poor gear train in footpath is compared with the poor cylinder group in footpath, and the variable gradient of the poor gear in footpath is big, and stability is not as the poor cylinder group in footpath, but the repacking of paper machine ratio is easier to.
Dried with cotton is raw material, according to above-mentioned technology, the half-dried paper (moisture about 40～38%) that the initial stage that will be in shrinks is through the poor cylinder group drying in footpath, the half elastic type sack kraft paper of making is as shown in table 1, tensile strength is higher than or also can both obtains analog result similar in appearance to wheat straw paper pulp, begasse pulp, the reed pulp of cotton dry pulp, as using wood pulp, Ze Qiang Toughness is better.
* expression: shipment is damaged be meant the dress ash through the railway station to the breakage rate of destination
80 * 4 are meant 80g/m
2Quantitatively, 4 layers of paper bag
Originally straw paper refers to two layers of wood pulp of two layers of straw pulp, uses straw paper intensity too poor fully because of four layers, can not use.
Advantage of the present invention is that technology and equipment is simple, compare with existing method, need not to add a cover elasticity treatment facility, small investment, operate identical with the common paper machine, easily operation, both be applicable to straw pulp, also can be used for wood pulp etc., the better performances of the straw pulp elasticity sack kraft paper that produces with above-mentioned method and apparatus is when using method and apparatus of the present invention, in slurrying, the technical improvement of pulling an oar then all made paper bag with this kind paper, can be applied to pack cement, emphasis of the present invention is to be applied to straw pulp sack kraft paper processed, with careless Dai Mu, can save a large amount of timber, factory can obtain considerable economic benefit (need to make 1 ton of sack kraft paper with 5 cubic metres of softwoods originally, 5 cubic metres of present market prices of timber are more than 2000 yuan, and this method only needs 2.5 tons of grass to produce 1 ton of sack kraft paper, and its cost of material only needs 180 yuan).
Claims (2)
1, the method for a kind of manufacturing extensible paper (single elastic type), it is characterized in that in paper-making process, the half-dried paper that shrinks from the initial stage that is in that the anterior drying cylinder of paper machine comes out enters the poor gear train of poor cylinder group in footpath or footpath at paper machine rear portion, and dried paper is delivered to cooling cylinder and coiling machine through deflector roll again.
2, a kind of equipment that is used for the described method of claim 1, it is characterized in that copying in the paper equipment, the rear portion drying cylinder of paper machine is to replace existing isometrical cylinder group with the poor gear train of poor cylinder group in footpath or footpath, in the poor cylinder group in footpath, the diameter of each drying cylinder reduces gradually, and each gear diameter of transmission drying cylinder increases gradually in the poor gear train in footpath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88107788 CN1016193B (en) | 1988-11-16 | 1988-11-16 | Equipment for producing elastic paper by use of radial deviation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88107788 CN1016193B (en) | 1988-11-16 | 1988-11-16 | Equipment for producing elastic paper by use of radial deviation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1042746A true CN1042746A (en) | 1990-06-06 |
| CN1016193B CN1016193B (en) | 1992-04-08 |
Family
ID=4834782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88107788 Expired CN1016193B (en) | 1988-11-16 | 1988-11-16 | Equipment for producing elastic paper by use of radial deviation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1016193B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107012714A (en) * | 2017-06-05 | 2017-08-04 | 山东天和纸业有限公司 | A kind of paper machine dryer device |
| CN107237201A (en) * | 2017-07-07 | 2017-10-10 | 玖龙浆纸（乐山）有限公司 | One kind is used to produce microcreping insulating paper equipment and technique |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0860165A (en) * | 1994-08-24 | 1996-03-05 | Idemitsu Kosan Co Ltd | Fuel oil composition and production thereof |
| WO1998023706A1 (en) * | 1996-11-27 | 1998-06-04 | Institut Francais Du Petrole | Method for improving the pour-point of paraffin feedstock with a nu-86 zeolite based catalyst |
| CA2563937C (en) * | 2004-04-22 | 2011-06-21 | Albemarle Netherlands B.V. | Hydrotreating catalyst containing a group v metal |
-
1988
- 1988-11-16 CN CN 88107788 patent/CN1016193B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107012714A (en) * | 2017-06-05 | 2017-08-04 | 山东天和纸业有限公司 | A kind of paper machine dryer device |
| CN107237201A (en) * | 2017-07-07 | 2017-10-10 | 玖龙浆纸（乐山）有限公司 | One kind is used to produce microcreping insulating paper equipment and technique |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1016193B (en) | 1992-04-08 |
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International patent classification (main classification): D21H15/04 |