CN102877357B - Preparation method of thick paperboard with high bonding strength between paperboards - Google Patents
Preparation method of thick paperboard with high bonding strength between paperboards Download PDFInfo
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- CN102877357B CN102877357B CN201210333283.2A CN201210333283A CN102877357B CN 102877357 B CN102877357 B CN 102877357B CN 201210333283 A CN201210333283 A CN 201210333283A CN 102877357 B CN102877357 B CN 102877357B
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Abstract
The invention relates to a preparation method of a thick paperboard, in particular to a preparation method of a thick paperboard with high bonding strength between paperboards. In the preparation method, a fog-like adhesive water solution is sprayed between wet paper layers before the wet paper formed on a net by pulp with beating degree of 20-35oSR are mutually bonded; the adhesive water solution is one of starch, polyacrylamide modified substance or a mixture of starch and the polyacrylamide modified substance; and the concentration of the adhesive water solution is 0.5-6.0%. The preparation method has following advantages that: 1, manufacturing paper with pulp is easy, and energy can be saved; and 2, the effect of improving bonding strength is notable, and a certain effect in improving retention of the pulp and chemical materials is realized. In addition, the preparation method increases bonding point and bonding force between the adhesive and pulp fibers so as to greatly improve bonding strength between the paperboards.
Description
Technical field
The present invention relates to a kind of preparation method of millboard.
Background technology
The paper pulp preparation that existing millboard generally adopts beating degree high, but the paper pulp high because of beating degree is difficult at papermaking wet end drainage, the dehydration of formation wet page is poor, easily falling slurry when producing millboard, bubbling and producing the paper defects such as wrinkle, and more electric energy need be consumed for improving beating degree, although and the low paper pulp drainage of beating degree is better, but because paper pulp fiber wire-dividing broom purification is bad, the power that interweaves between fiber difference, poor bonding strength between the ply of board be copied into, easy layering.
Summary of the invention
In order to solve above-mentioned technical problem, the object of this invention is to provide a kind of preparation method of millboard of high cardboard interfacial bonding strength, the method adopts the paper pulp that beating degree is low, manufactures paper with pulp easy and energy-conservation, and considerably improves the interfacial bonding strength of cardboard.
In order to realize above-mentioned object, present invention employs following technical scheme:
A preparation method for the millboard of high cardboard interfacial bonding strength, the method utilizes beating degree to be 20
osR ~ 35
othe paper pulp of SR after online forms l Water Paper page bonded to each other together before, vaporific binder aqueous solution is sprayed at l Water Paper interlayer, described binder aqueous solution is one in starch, polyacrylamide modifier or its mixture, and binder aqueous solution concentration is 0.5% ~ 6.0%.
As preferably, spray starch selected by described adhesive, and the concentration of binder aqueous solution is 2.0% ~ 5.0%.As preferred again, the concentration of described binder aqueous solution is 3.0% ~ 4.0%.
As preferably, polyacrylamide modifier selected by described adhesive, and the concentration of binder aqueous solution is 0.5% ~ 3.0%.As preferred again, the concentration of binder aqueous solution is 1.5% ~ 2.0%.
As preferably, described adhesive selects spray starch and the mixing of polyacrylamide modifier, and the concentration of binder aqueous solution is 1.0% ~ 6.0%.As preferred again, the concentration of binder aqueous solution is 1.5% ~ 4.0%.
As preferably, described polyacrylamide modifier selects amphiprotic polyacrylamide or anionic polyacrylamide.
As preferred again, described starch concentration 1.5% ~ 3.5%, polyacrylamide modifier concentration 0.3% ~ 0.8%.
As preferably, the nozzle of spray adopts fan nozzle, and injector spacing is at 80mm ~ 130mm, and spray press control is at 0.3Mpa ~ 0.4Mpa.
The present invention, owing to have employed above-mentioned technical scheme, has following feature:
One, manufacture paper with pulp easy and energy-conservation, the paper pulp low because of beating degree is good at papermaking wet end drainage, and dehydration easily, is not easily fallen slurry, bubbled, easily manufacture paper with pulp in the process of manufacturing paper with pulp; Another low beating degree can not need degree of depth defibrination and save a large amount of electric energy;
Two, improve the interfacial bonding strength Be very effective of cardboard, also have certain effect to the retention improving paper pulp and chemical industry auxiliary material.In addition, in paper pulp online forming process, at the composite adhesive of l Water Paper interlayer spray containing polyacrylamide modifier, not only can improve the retention of fiber fines, and greatly can improve the retention of other adhesives such as starch, simultaneously bridge linking effect plays between fiber in the hydroxyl that carries of polyacrylamide modifier itself and modification group, adds and bonding point between paper pulp fiber and bonding force, thus substantially increases the bond strength between ply of board.
Accompanying drawing explanation
Fig. 1 is process chart of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is made a detailed explanation.
The preparation method of the millboard of a kind of high cardboard interfacial bonding strength as shown in Figure 1, the method utilizes beating degree to be 20
osR ~ 35
oSRpaper pulp after online forms l Water Paper page bonded to each other together before, vaporific binder aqueous solution is sprayed at l Water Paper interlayer, as sprayed vaporific binder aqueous solution at No. 1 net, No. 2 nets respectively after forming l Water Paper page, described binder aqueous solution is one in starch, polyacrylamide modifier or its mixture, and binder aqueous solution concentration is 0.5% ~ 6.0%.And then enter later roller, main pressure roller, pressure roller and fit together, then cylinder dried 1 ovens dry, carry out surface treatment, then enter cylinder dried 2 ovens dry, through calender, then batch, rewind slitting is packed and is put in storage.
Compared by embodiment and comparative example more below, the present invention is further described.
| Project | Speed of a motor vehicle m/min | Cal(l)iper mm | Beating degree oSR | Weight in wet base g | Interlayer sprayed adhesive composition and concentration | Interlaminar strength ft lb/1000in 2 | Test situation | Self-inspection and client feedback |
| Before improvement | 35 | 0.90 | 42~45 | 4.8 | Nothing | 65~75 | Without exception | Coating combination is poor, easy layering, and client cannot use |
| Embodiment 1 | 35 | 0.90 | 38~42 | 4.8 | Starch/3.5% aqueous solution | 70~75 | There are slurry, foaming phenomena in production process | There is lamination, have customer complaint layering |
| Embodiment 2 | 35 | 0.90 | 38~42 | 4.8 | Amphiprotic polyacrylamide/2.0% aqueous solution | 85~100 | Without exception | Occasionally there is lamination, occasionally have layering to complain |
| Embodiment 3 | 35 | 0.90 | 30~35 | 4.5 | (starch/2.0%+ amphiprotic polyacrylamide 0.5%) aqueous solution | 115~130 | Without exception | Without layering, customers' responsiveness is good |
| Embodiment 4 | 35 | 0.90 | 30~35 | 4.5 | Starch/4.0% aqueous solution | 110~120 | Without exception | Without layering, customers' responsiveness is good |
| Embodiment 5 | 35 | 0.90 | 30~35 | 4.5 | Amphiprotic polyacrylamide/3.0% aqueous solution | 110~120 | Without exception | Without layering, customers' responsiveness is good |
Claims (2)
1. a preparation method for the millboard of high cardboard interfacial bonding strength, is characterized in that: the method utilizes beating degree to be 20
osR ~ 35
othe paper pulp of SR after online forms l Water Paper page bonded to each other together before, spray vaporific binder aqueous solution at l Water Paper interlayer, described adhesive selects spray starch and the mixing of polyacrylamide modifier, and the concentration of binder aqueous solution is 1.0% ~ 6.0%; Spray starch concentration 1.5% ~ 3.5%, polyacrylamide modifier concentration 0.3% ~ 0.8%; Described polyacrylamide modifier selects amphiprotic polyacrylamide or anionic polyacrylamide; The nozzle of spray adopts fan nozzle, and injector spacing is at 80mm ~ 130mm, and spray press control is at 0.3Mpa ~ 0.4Mpa.
2. the preparation method of the millboard of a kind of high cardboard interfacial bonding strength according to claim 1, is characterized in that: the concentration of binder aqueous solution is 1.5% ~ 4.0%.
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| CN201210333283.2A CN102877357B (en) | 2012-09-11 | 2012-09-11 | Preparation method of thick paperboard with high bonding strength between paperboards |
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| CN201210333283.2A CN102877357B (en) | 2012-09-11 | 2012-09-11 | Preparation method of thick paperboard with high bonding strength between paperboards |
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| CN102877357A CN102877357A (en) | 2013-01-16 |
| CN102877357B true CN102877357B (en) | 2015-06-17 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225239B (en) * | 2013-01-22 | 2015-11-25 | 江西弘泰电子信息材料有限公司 | A kind of manufacture method of high interfacial bonding strength high-stiffness presspaper |
| CN104179061A (en) * | 2013-05-28 | 2014-12-03 | 湖南广信电工科技股份有限公司 | Production process of elastic paperboard |
| CN103572657B (en) * | 2013-11-20 | 2015-10-28 | 江南大学 | Composite Cypres and its preparation method and application |
| CN104195864B (en) * | 2014-08-11 | 2016-08-24 | 江西弘泰电子信息材料有限公司 | A kind of ply adhesion method in carrier tape package paper using preparation process and interlayer adhesive |
| CN105969246A (en) * | 2016-05-20 | 2016-09-28 | 山西朱好古麻笺纸业有限公司 | Adhesive for manufacturing hemp paper |
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| JP2007277795A (en) * | 2006-03-14 | 2007-10-25 | Nippon Paper Industries Co Ltd | Papermaking method and paper |
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