CN105155331A - Method for producing copy paper by utilizing deinked pulp - Google Patents
Method for producing copy paper by utilizing deinked pulp Download PDFInfo
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- CN105155331A CN105155331A CN201510574599.4A CN201510574599A CN105155331A CN 105155331 A CN105155331 A CN 105155331A CN 201510574599 A CN201510574599 A CN 201510574599A CN 105155331 A CN105155331 A CN 105155331A
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Abstract
The invention relates to a method for producing copy paper by utilizing deinked pulp. The method comprises the following steps: step I, heating completely-deinked pulp to 90 to 95 DEG C, then naturally cooling the pulp, when the temperature reaches 55 to 65 DEG C, bleaching by adding thiourea dioxide, wherein the dosage of the thiourea dioxide is 1 to 2 kg per ton, stirring for 1 to 2 hours during the bleaching process; step II, adding pulp containing polyamide fibers and pulp containing renewable cellulose fibers into the deinked pulp, wherein the mixed pulp contains 25 to 35 parts of deinked pulp, 18 to 22 parts of polyamide fiber-containing pulp and 18 to 25 parts of renewable cellulose fiber-containing pulp; step III, adding yeast powder into the mixed pulp, stirring for 5 to 10 minutes, then sealing, standing for 6 to 8 hours, wherein the dosage of the yeast powder is controlled at 1 to 1.5 kg per ton; step IV, re-stirring the mixed pulp after standing for 5 to 10 minutes; and step V, outputting the mixed pulp, and molding, dewatering, drying, gluing and press polishing a paper film.
Description
Technical field
The present invention relates to a kind of method utilizing Deinking Pulp to produce tissue paper.
Background technology
Tissue paper is the high culture industrial paper that a kind of production difficulty is quite high, the technical characteristic of this product is mainly as follows: have higher physical strength, the excellent uniformity and transparency, and good surface nature, fine and smooth, smooth, smooth, dust is few, without bubble sand, good printability.In waste paper is recycled, deinked stock can be obtained by modes such as size degradation, filtration, bleachings, but this deinked stock directly can use when making general paper using, and be often difficult to when producing tissue paper utilize.Because its fiber is comparatively fragmentary, make its pulling force not enough; Because its color is often not enough to make tissue paper have good transparency; Because its cohesion degree is lower, paper surface is made easily to occur crude phenomenon.
Summary of the invention
Therefore, for above-mentioned problem, the present invention proposes the Deinking Pulp that utilizes that a kind of pulling force is strong, transparency good, paper is smooth and produces the method for tissue paper.
For achieving the above object, present invention employs following technical scheme: a kind of method utilizing Deinking Pulp to produce tissue paper, comprises the following steps:
The first step, is heated to 90-95 DEG C by the slurry of complete deinking, then Temperature fall, when temperature arrives 55-65 DEG C, add thiourea dioxide and bleach, the consumption of thiourea dioxide controls at 1-2kg/ ton, and stir in bleaching process, mixing time is 1-2 hour;
Second step, in Deinking Pulp, add the slurry containing polyamide-based fiber and the slurry containing regenerated cellulose fibrid, the content of gained mixed slurry is Deinking Pulp 25-35 part, the slurry 18-22 part containing polyamide-based fiber, the slurry 18-25 part containing regenerated cellulose fibrid;
3rd step, in the slurry of mixing, add dusty yeast, and stir 5-10 minute, then sealing and standing, time of repose is 6-8 hour, and the consumption of dusty yeast controls at 1-1.5kg/ ton;
4th step, stirs again by the mixed slurry after leaving standstill, mixing time 5-10 minute;
5th step, mixed slurry export carry out that paper film is shaping, dehydration, oven dry, gluing, press polish.
Further, described dusty yeast is candida utili bacterium.
By adopting preceding solution, the invention has the beneficial effects as follows: this utilizes Deinking Pulp to produce the method for tissue paper, by thiourea dioxide, Deinking Pulp is further bleached, and first heater riser temperature, then Temperature fall, makes the molecular motion aggravation of the deinked stock after heating, after adding thiourea dioxide, can react rapidly, reaction effect is better.And be mixed into containing the slurry of polyamide-based fiber, the slurry containing regenerated cellulose fibrid in deinked stock, the fiber of the fiber of two kinds of slurries to deinked stock is utilized to make up, the arrangement tensile strength of paper is made to be unlikely to reduce too much, after shaping paper, fragmentary fiber in deinked stock will be filled up between the fiber of two kinds of slurries, thus the pulling force of the tissue paper that newly shaping paper and usual method are obtained is basically identical.And add dusty yeast, the spacing between longer fiber can be made to pull open, thus be more conducive to filling up of fragmentary fiber, and the mixed slurry after fermentation, better transparency can be had.
Detailed description of the invention
Now in conjunction with detailed description of the invention, the present invention is further described.
Embodiment one:
The present embodiment provides a kind of method utilizing Deinking Pulp to produce tissue paper, comprises the following steps:
The first step, is heated to 90 DEG C by the slurry of complete deinking, then Temperature fall, when temperature arrives 55 DEG C, adds thiourea dioxide and bleaches, and the consumption of thiourea dioxide controls at 1kg/ ton, and stirs in bleaching process, and mixing time is 1 hour;
Second step, in Deinking Pulp, add the slurry containing polyamide-based fiber and the slurry containing regenerated cellulose fibrid, the content of gained mixed slurry is Deinking Pulp 25 parts, 18 parts, the slurry containing polyamide-based fiber, 18 parts, the slurry containing regenerated cellulose fibrid;
3rd step, in the slurry of mixing, add dusty yeast, and stir 5 minutes, then sealing and standing, time of repose is 6 hours, and the consumption of dusty yeast controls at 1kg/ ton;
4th step, stirs again by the mixed slurry after leaving standstill, mixing time 5 minutes;
5th step, mixed slurry export carry out that paper film is shaping, dehydration, oven dry, gluing, press polish.
Described dusty yeast is candida utili bacterium.
Embodiment two:
The present embodiment provides a kind of method utilizing Deinking Pulp to produce tissue paper, comprises the following steps:
The first step, is heated to 95 DEG C by the slurry of complete deinking, then Temperature fall, when temperature arrives 65 DEG C, adds thiourea dioxide and bleaches, and the consumption of thiourea dioxide controls at 2kg/ ton, and stirs in bleaching process, and mixing time is 2 hours;
Second step, in Deinking Pulp, add the slurry containing polyamide-based fiber and the slurry containing regenerated cellulose fibrid, the content of gained mixed slurry is Deinking Pulp 35 parts, 22 parts, the slurry containing polyamide-based fiber, 25 parts, the slurry containing regenerated cellulose fibrid;
3rd step, in the slurry of mixing, add dusty yeast, and stir 10 minutes, then sealing and standing, time of repose is 8 hours, and the consumption of dusty yeast controls at 1.5kg/ ton;
4th step, stirs again by the mixed slurry after leaving standstill, mixing time 10 minutes;
5th step, mixed slurry export carry out that paper film is shaping, dehydration, oven dry, gluing, press polish.
Described dusty yeast is candida utili bacterium.
Embodiment three:
The present embodiment provides a kind of method utilizing Deinking Pulp to produce tissue paper, comprises the following steps:
The first step, is heated to 93 DEG C by the slurry of complete deinking, then Temperature fall, when temperature arrives 60 DEG C, add thiourea dioxide and bleach, the consumption of thiourea dioxide controls at 1.5kg/ ton, and stir in bleaching process, mixing time is 1.5 hours;
Second step, in Deinking Pulp, add the slurry containing polyamide-based fiber and the slurry containing regenerated cellulose fibrid, the content of gained mixed slurry is Deinking Pulp 30 parts, 20 parts, the slurry containing polyamide-based fiber, 22 parts, the slurry containing regenerated cellulose fibrid;
3rd step, in the slurry of mixing, add dusty yeast, and stir 7.5 minutes, then sealing and standing, time of repose is 7.5 hours, and the consumption of dusty yeast controls at 1.2kg/ ton;
4th step, stirs again by the mixed slurry after leaving standstill, mixing time 7.5 minutes;
5th step, mixed slurry export carry out that paper film is shaping, dehydration, oven dry, gluing, press polish.
Described dusty yeast is candida utili bacterium.
This utilizes Deinking Pulp to produce the method for tissue paper, by thiourea dioxide, Deinking Pulp is further bleached, and first heater riser temperature, then Temperature fall, make the molecular motion aggravation of the deinked stock after heating, after adding thiourea dioxide, can react rapidly, reaction effect is better.And be mixed into containing the slurry of polyamide-based fiber, the slurry containing regenerated cellulose fibrid in deinked stock, the fiber of the fiber of two kinds of slurries to deinked stock is utilized to make up, the arrangement tensile strength of paper is made to be unlikely to reduce too much, after shaping paper, fragmentary fiber in deinked stock will be filled up between the fiber of two kinds of slurries, thus the pulling force of the tissue paper that newly shaping paper and usual method are obtained is basically identical.And add dusty yeast, the spacing between longer fiber can be made to pull open, thus be more conducive to filling up of fragmentary fiber, and the mixed slurry after fermentation, better transparency can be had.
Although specifically show in conjunction with preferred embodiment and describe the present invention; but those skilled in the art should be understood that; not departing from the spirit and scope of the present invention that appended claims limits; can make a variety of changes the present invention in the form and details, be protection scope of the present invention.
Claims (2)
1. utilize Deinking Pulp to produce a method for tissue paper, it is characterized in that, comprise the following steps:
The first step, is heated to 90-95 DEG C by the slurry of complete deinking, then Temperature fall, when temperature arrives 55-65 DEG C, add thiourea dioxide and bleach, the consumption of thiourea dioxide controls at 1-2kg/ ton, and stir in bleaching process, mixing time is 1-2 hour;
Second step, in Deinking Pulp, add the slurry containing polyamide-based fiber and the slurry containing regenerated cellulose fibrid, the content of gained mixed slurry is Deinking Pulp 25-35 part, the slurry 18-22 part containing polyamide-based fiber, the slurry 18-25 part containing regenerated cellulose fibrid;
3rd step, in the slurry of mixing, add dusty yeast, and stir 5-10 minute, then sealing and standing, time of repose is 6-8 hour, and the consumption of dusty yeast controls at 1-1.5kg/ ton;
4th step, stirs again by the mixed slurry after leaving standstill, mixing time 5-10 minute;
5th step, mixed slurry export carry out that paper film is shaping, dehydration, oven dry, gluing, press polish.
2. a kind of method utilizing Deinking Pulp to produce tissue paper according to claim 1, is characterized in that: described dusty yeast is candida utili bacterium.
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105951523A (en) * | 2016-06-27 | 2016-09-21 | 福建省晋江优兰发纸业有限公司 | Production method of low gram weight copy paper |
CN106149434A (en) * | 2016-06-30 | 2016-11-23 | 福建省晋江优兰发纸业有限公司 | A kind of grinding method of high beating degree copy paper |
CN107881829A (en) * | 2017-11-04 | 2018-04-06 | 福建省晋江优兰发纸业有限公司 | A kind of method of pulp from decoloured waste paper production high intensity tissue |
CN108004834A (en) * | 2017-11-12 | 2018-05-08 | 福建省晋江优兰发纸业有限公司 | A kind of deinking recycled pulp matches somebody with somebody the method for copying two-sided hectograph paper |
CN108035190A (en) * | 2017-11-12 | 2018-05-15 | 福建省晋江优兰发纸业有限公司 | A kind of high humility waste paper manufactures reel copy paper method |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105951523A (en) * | 2016-06-27 | 2016-09-21 | 福建省晋江优兰发纸业有限公司 | Production method of low gram weight copy paper |
CN106149434A (en) * | 2016-06-30 | 2016-11-23 | 福建省晋江优兰发纸业有限公司 | A kind of grinding method of high beating degree copy paper |
CN106149434B (en) * | 2016-06-30 | 2018-01-23 | 福建省晋江优兰发纸业有限公司 | A kind of grinding method of high beating degree copy paper |
CN107881829A (en) * | 2017-11-04 | 2018-04-06 | 福建省晋江优兰发纸业有限公司 | A kind of method of pulp from decoloured waste paper production high intensity tissue |
CN108004834A (en) * | 2017-11-12 | 2018-05-08 | 福建省晋江优兰发纸业有限公司 | A kind of deinking recycled pulp matches somebody with somebody the method for copying two-sided hectograph paper |
CN108035190A (en) * | 2017-11-12 | 2018-05-15 | 福建省晋江优兰发纸业有限公司 | A kind of high humility waste paper manufactures reel copy paper method |
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