CN101560742B - Preparation method for lab multilayer handsheet - Google Patents
Preparation method for lab multilayer handsheet Download PDFInfo
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- CN101560742B CN101560742B CN2009100983878A CN200910098387A CN101560742B CN 101560742 B CN101560742 B CN 101560742B CN 2009100983878 A CN2009100983878 A CN 2009100983878A CN 200910098387 A CN200910098387 A CN 200910098387A CN 101560742 B CN101560742 B CN 101560742B
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Abstract
The invention discloses a preparation method for a lab multilayer handsheet. The preparation method has the advantages that: the multilayer handsheet prepared BY the method has a flat appearance, stable water content during compounding, good repeatability of a test result; the handsheet is used to evaluate the performance and strength indexes of multilayer paper after pulp compounding so as to provide objective and accurate data support for the practical production of paper boards; and the method is simple, has lower cost, and is suitable for being generalized and applied to labs.
Description
Technical field
The present invention relates to a kind of preparation method of field of papermaking handsheet, especially relate to a kind of preparation method of lab multilayer handsheet.
Background technology
In the paper industry, the manufacturing of cardboard generally all is to be composited by multi-layered paper, and there is very big difference in the character of the cardboard after sheet-fed and the MULTILAYER COMPOSITE; And generally can only make the individual layer handsheet in the laboratory, the character of test compound back cardboard need make multilayer handsheet.The making in laboratory multilayer handsheet much all adopts the multilevel shaping device at present, but this equipment price costliness, and this equipment is realized multi-layer forming by the segmentation multilayer for slurry, manufacture paper with pulp with the individual layer of cardboard actual production and to carry out compound technology again and have very big-difference, limited the reference value of test result; If carry out multilayer build-up and simply breadboard individual layer is copied sheet, have occur easily page out-of-flatness, each layer in conjunction with poor, test problem such as poor repeatability.
Summary of the invention
It is stable, the test good reproducibility that technical problem to be solved by this invention provides a kind of multilayer handsheet smooth appearance of producing, strength character of making, and test result actual production has the preparation method of the lab multilayer handsheet of reference value to cardboard.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of preparation method of lab multilayer handsheet, and it may further comprise the steps:
(1), chooses the required raw material of each layer paper in the cardboard actual production as the raw material of making each corresponding individual handsheet;
Mass dryness fraction is controlled at 15%～20%;
(3), individual handsheet of each layer is superimposed together successively by order up and down, every stack one deck covers packing paper on individual handsheet of the superiors, intersect roll extrusion 1 time in length and breadth with paper calender roll on packing paper then, throws off packing paper after roll extrusion is finished;
(4), with the page squeezer to the stack after handsheet squeeze, controlled pressure is 0.3～0.4Mpa;
(5), the handsheet after will squeezing is that 23 ± 1 ℃, humidity are under the standard environment of 50 ± 2%RH dry 24 hours in temperature, must arrive the multilayer handsheet that produce in the laboratory at last.
Compared with prior art, advantage of the present invention is by this method produced MULTILAYER COMPOSITE handsheet smooth appearance, compound tense moisture stabilization, test result good reproducibility, can be used to estimate performance and every intensity index of the compound back of paper pulp multi-ply paper, thereby for the actual production of cardboard provides objective and accurate data support, and this preparation method is simple, cost is also lower, is adapted at the laboratory and promotes the use of.
The specific embodiment
Below the present invention is described in further detail.
Embodiment one: a kind of preparation method of lab multilayer handsheet, and it may further comprise the steps:
(1), choose chemical pulp as the raw material of making individual handsheet of surface layer and individual handsheet of bottom, choose the deinking slurry as the raw material of making individual handsheet of sandwich layer, and in the raw material of making individual handsheet of each layer, add an amount of sizing agent and retention agent;
(2), copy to get according to the flow process of individual handsheet of making in laboratory and quantitatively be 50g/m
2Individual handsheet of surface layer, and the pressure in when squeezing control is 6psi, squeezing time to be that 3s, blotting paper mass dryness fraction are 60%, makes the mass dryness fraction of individual handsheet of surface layer that makes be controlled at 15%;
(3), repetition (2) steps in sequence is copied to get and quantitatively is 100g/m
2Individual handsheet of sandwich layer and be 50g/m quantitatively
2Individual handsheet of bottom;
(4), the order of individual handsheet of each layer by " bottom+sandwich layer+surface layer " is superimposed together successively, every stack one deck, on individual handsheet of the superiors, cover packing paper, on packing paper, intersect roll extrusion 1 time in length and breadth with paper calender roll then, throw off packing paper after roll extrusion is finished;
(5), with the page squeezer to the stack after handsheet squeeze, controlled pressure is 0.3Mpa;
(6), the handsheet after will squeezing is that 23 ℃, humidity are under the standard environment of 50%RH dry 24 hours in temperature, must arrive the multilayer handsheet that produce in the laboratory at last.
The lab multilayer handsheet that makes by said method is carried out the related physical performance test, and the gained result is as follows:
The bond strength good reproducibility of this test result can be used to estimate the compound performance of multi-ply paper afterwards of paper pulp, and actual production has reference value to test result to cardboard.
Embodiment two: a kind of preparation method of lab multilayer handsheet, and it may further comprise the steps:
(1), choose chemical pulp as the raw material of making individual handsheet of surface layer and individual handsheet of bottom, choose the deinking slurry as the raw material of making individual handsheet of sandwich layer, and in the raw material of making individual handsheet of each layer, add an amount of sizing agent and retention agent;
(2), copy to get according to the flow process of individual handsheet of making in laboratory and quantitatively be 50g/m
2Individual handsheet of surface layer, and the pressure in when squeezing control is 7psi, squeezing time to be that 5s, blotting paper mass dryness fraction are 70%, makes the mass dryness fraction of individual handsheet that makes be controlled at 18%;
(3), repetition (2) steps in sequence is copied to get and quantitatively is 100g/m
2Individual handsheet of sandwich layer and be 50g/m quantitatively
2Individual handsheet of bottom;
(4), the order of individual handsheet of each layer by " bottom+sandwich layer+surface layer " is superimposed together successively, every stack one deck, on individual handsheet of the superiors, cover packing paper, on packing paper, intersect roll extrusion 1 time in length and breadth with paper calender roll then, throw off packing paper after roll extrusion is finished;
(5), with the page squeezer to the stack after handsheet squeeze, controlled pressure is 0.4Mpa;
(6), the handsheet after will squeezing is that 23.5 ℃, humidity are under the standard environment of 51%RH dry 24 hours in temperature, must arrive the multilayer handsheet that produce in the laboratory at last.
The lab multilayer handsheet that makes by said method is carried out the related physical performance test, and the gained result is as follows:
The bond strength good reproducibility of this test result can be used to estimate the compound performance of multi-ply paper afterwards of paper pulp, and actual production has reference value to test result to cardboard.
Embodiment three: a kind of preparation method of lab multilayer handsheet, and it may further comprise the steps:
(1), choose chemical pulp as the raw material of making individual handsheet of surface layer and individual handsheet of bottom, choose mechanical pulp as the raw material of making individual handsheet of sandwich layer, and in the raw material of making individual handsheet of each layer, add an amount of sizing agent and retention agent;
(2), copy to get according to the flow process of individual handsheet of making in laboratory and quantitatively be 50g/m
2Individual handsheet of surface layer, and the pressure in when squeezing control is 8psi, squeezing time to be that 6s, blotting paper mass dryness fraction are 80%, makes the mass dryness fraction of individual handsheet that makes be controlled at 20%;
(3), repetition (2) steps in sequence is copied to get and quantitatively is 100g/m
2Individual handsheet of sandwich layer and be 50g/m quantitatively
2Individual handsheet of bottom;
(4), the order of individual handsheet of each layer by " bottom+sandwich layer+surface layer " is superimposed together successively, every stack one deck, on individual handsheet of the superiors, cover packing paper, on packing paper, intersect roll extrusion 1 time in length and breadth with paper calender roll then, throw off packing paper after roll extrusion is finished;
(5), with the page squeezer to the stack after handsheet squeeze, controlled pressure is 0.35Mpa;
(6), the handsheet after will squeezing is that 24 ℃, humidity are under the standard environment of 52%RH dry 24 hours in temperature, must arrive the multilayer handsheet that produce in the laboratory at last.
The lab multilayer handsheet that makes by said method is carried out the related physical performance test, and the gained result is as follows:
The bond strength good reproducibility of this test result can be used to estimate the compound performance of multi-ply paper afterwards of paper pulp, and actual production has reference value to test result to cardboard.
In the foregoing description, the flow process of individual handsheet of making in laboratory is for carrying out the quick Fabrication of individual handsheet in the laboratory according to ISO 5269/2 standard " paper pulp physical test with the preparation of laboratory paper " on commercially available kayser sheet forming apparatus BB/BBS handshcet former.
The squeezer that employed page squeezer adopts commercially available common being used to squeeze page in the foregoing description all can.
Claims (1)
1. the preparation method of a lab multilayer handsheet is characterized in that it may further comprise the steps:
(1), chooses the required raw material of each layer paper in the cardboard actual production as the raw material of making each corresponding individual handsheet;
(2), copy according to the flow process of individual handsheet of making in laboratory and get individual handsheet of above-mentioned each layer, and the pressure in when squeezing control is 6～8psi, squeezing time to be that 3～6s, blotting paper mass dryness fraction are 60～80%, makes the mass dryness fraction of individual handsheet that makes be controlled at 15%～20%;
(3), individual handsheet of each layer is superimposed together successively by order up and down, every stack one deck covers packing paper on individual handsheet of the superiors, intersect roll extrusion 1 time in length and breadth with paper calender roll on packing paper then, throws off packing paper after roll extrusion is finished;
(4), with the page squeezer to the stack after handsheet squeeze, controlled pressure is 0.3～0.4Mpa;
(5), the handsheet after will squeezing is that 23 ± 1 ℃, humidity are under the standard environment of 50 ± 2%RH dry 24 hours in temperature, must arrive the multilayer handsheet that produce in the laboratory at last.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100983878A CN101560742B (en) | 2009-05-12 | 2009-05-12 | Preparation method for lab multilayer handsheet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100983878A CN101560742B (en) | 2009-05-12 | 2009-05-12 | Preparation method for lab multilayer handsheet |
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| CN101560742A CN101560742A (en) | 2009-10-21 |
| CN101560742B true CN101560742B (en) | 2011-06-22 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102174766B (en) * | 2011-01-18 | 2012-07-25 | 金红叶纸业集团有限公司 | Production method of handsheet with high bulk and low ration |
| CN103741542B (en) * | 2013-12-19 | 2016-04-06 | 陕西科技大学 | A kind of boron carbide strengthens paper friction material and preparation method thereof |
| CN103726399B (en) * | 2013-12-19 | 2015-09-30 | 陕西科技大学 | A kind of blended fiber strengthens paper friction material and preparation method thereof |
| CN104452413A (en) * | 2014-11-27 | 2015-03-25 | 陕西科技大学 | Paper sheet conveying system |
| CN112609504A (en) * | 2020-12-10 | 2021-04-06 | 上海东升新材料有限公司 | Paper pattern making method for evaluating application effect of low-chlorine wet strength agent in household paper |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010087825A (en) * | 2001-06-22 | 2001-09-26 | 최남희 | A process for preparing shroud |
| JP2002306615A (en) * | 2001-04-17 | 2002-10-22 | Koichi Imai | Sheet-like far infrared radiator and manufacturing method for the same |
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- 2009-05-12 CN CN2009100983878A patent/CN101560742B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002306615A (en) * | 2001-04-17 | 2002-10-22 | Koichi Imai | Sheet-like far infrared radiator and manufacturing method for the same |
| KR20010087825A (en) * | 2001-06-22 | 2001-09-26 | 최남희 | A process for preparing shroud |
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| CN101560742A (en) | 2009-10-21 |
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