阅读说明：本技术 一种用于制作学生作业本纸张的工艺 (Process for making student exercise book paper ) 是由 童根荣 童震宇 于 2019-08-27 设计创作，主要内容包括：本发明公开了一种用于制作学生作业本纸张的工艺,由以下步骤组成：将造纸原材料加工成原料颗粒,再通过搅拌器调配成均匀的碎纸浆；将得到的碎纸浆经过压力筛,得到初滤碎纸浆；将初滤碎纸浆加入纤维分离机中,对碎纸浆中的纤维含量进行提纯；将碎纸浆再容器中升温煮沸,将木质素从碎纸浆中分离出来,从而得到以木质素为主的纸浆；再向分离得到的纸浆中加入次氯酸钠漂白；向漂白后的纸浆中加入聚六亚甲基双胍和1,2丙二醇,增加纸浆的抗菌性；颜料与水搅拌均匀制成防护染料,将半干纸张加入防护染料,本发明涉及造纸工艺技术领域。该用于制作学生作业本纸张的工艺,提高纸张光的防护能力,增强纸张的抗菌效果,保证学生健康的目的。(the invention discloses a process for making student exercise book paper, which comprises the following steps: processing papermaking raw materials into raw material particles, and blending the raw material particles into uniform shredded paper pulp through a stirrer; subjecting the obtained crushed paper pulp to a pressure sieve to obtain primary filter crushed paper pulp; adding the primary filtered crushed paper pulp into a fiber separator, and purifying the fiber content in the crushed paper pulp; heating and boiling the crushed paper pulp in a container, and separating lignin from the crushed paper pulp to obtain paper pulp mainly containing lignin; adding sodium hypochlorite into the separated paper pulp for bleaching; adding polyhexamethylene biguanide and 1, 2 propylene glycol into the bleached paper pulp to increase the antibacterial property of the paper pulp; the invention relates to the technical field of papermaking processes, in particular to a method for preparing a protective dye by uniformly stirring pigment and water, and adding the protective dye into semi-dry paper. The process for manufacturing the student exercise book paper improves the protection capability of paper light, enhances the antibacterial effect of the paper, and ensures the health of students.)

1. a process for making student exercise book paper, comprising the steps of:

step one, processing papermaking raw materials into raw material particles through a special crusher, adding the raw material particles into a special container, adding sodium hydrosulfite, sodium hydroxide, sodium sulfide and anthraquinone into the container, and blending into uniform shredded paper pulp through a stirrer;

Step two, the obtained crushed paper pulp is screened by a pressure screen to remove coarse and hard impurities, so as to obtain primary filter crushed paper pulp;

step three, adding the preliminary filtered and crushed paper pulp into a fiber separator, and purifying the fiber content in the crushed paper pulp;

Step four, adding the fine-filtered and purified crushed paper pulp into a boiling appliance, heating and boiling the crushed paper pulp for 2 hours, naturally cooling the boiled crushed paper pulp, adding a proper amount of sodium hydroxide into the crushed paper pulp, heating the crushed paper pulp to 50 ℃ again, continuously preserving the heat of the crushed paper pulp at 50 ℃ for 6 hours, and separating lignin from the crushed paper pulp to obtain paper pulp mainly containing the lignin;

step five, adding sodium hypochlorite into the separated paper pulp, heating to 50 ℃, keeping for 6 hours again to bleach the paper pulp, adding water to dilute the bleached paper pulp, standing, filtering out supernatant, and keeping the bottom paper pulp for later use;

sixthly, adding polyhexamethylene biguanide and 1, 2 propylene glycol into the bleached paper pulp, and uniformly stirring to increase the antibacterial property of the paper pulp;

step seven, uniformly scattering the paper pulp subjected to the antibacterial treatment on a paper machine, setting paper of various types according to production requirements, and heating the paper machine at 55 ℃ until the paper is in a semi-dry state;

step eight, adding the standby protective pigment into a proper amount of clear water, uniformly stirring the pigment and the water to prepare a protective dye, adding the semi-dry paper into the protective dye, soaking for 15s, taking out, and draining the water on the outer surface;

step nine, adding the dip-dyed paper into a dryer, drying and compacting the paper at a high temperature, and performing calendaring by using a calendar to prepare bulk roll paper;

printing the large roll paper, and then cutting and binding the formed large roll paper according to the specification of the student exercise book.

2. A process for making student exercise paper according to claim 1 wherein: in the first step, the papermaking raw material adopts big trees or reed grass, and the granularity of raw material particles is 1 mm.

3. a process for making student exercise paper according to claim 1 wherein: the concentration of the paper pulp prepared in the first step is 12-18%.

4. a process for making student exercise paper according to claim 1 wherein: and in the second step, the pressure of the pressure screen is controlled to be 5MPa, and the aperture of the screen mesh is 3mm, so that the primary filter crushed paper pulp is obtained.

5. A process for making student exercise paper according to claim 1 wherein: and in the seventh step, the water content of the half-dry paper accounts for 10-20% of the weight of the whole paper, and the paper cannot be loosened and fall off after being taken up.

6. a process for making student exercise paper according to claim 1 wherein: and in the step eight, the protective pigment adopts multiple colors such as faint yellow, light blue, light green, gray and the like, so that a coating with the required color can be formed on the surface of the paper, and the color of the coating has a reflection spectrum wavelength of 500nm-610 nm.

7. a process for making student exercise paper according to claim 1 wherein: and the water content of the dried paper in the step nine is lower than 3%.

Technical Field

the invention relates to the technical field of papermaking processes, in particular to a process for manufacturing student exercise book paper.

Background

The exercise book, the textbook and the student test paper are important tools for students to study, but as for the exercise book, at least 20 exercise books are averagely used by each person in a school period of primary and secondary school students in China, the number of the primary and secondary school students in China is huge, the demand for the exercise book is huge, and the exercise book, the textbook and the student test paper are made of paper.

At present, the student exercise book adopts the virgin stock white paper, and the glossiness of paper is high to illumination intensity is big under the sunlight reflection, and student's vision causes the injury, and current student exercise book does not have antibacterial capacity, thereby increases student's bacterial infection rate, is unfavorable for student's healthy.

disclosure of Invention

technical problem to be solved

aiming at the defects of the prior art, the invention provides a process for manufacturing paper of a student exercise book, and solves the problems that the student exercise book adopts virgin pulp white paper, the glossiness of the paper is high, so that the illumination intensity is high under sunlight reflection, the vision of students is damaged, and the existing student exercise book does not have antibacterial capacity, so that the bacterial infection rate of the students is increased, and the health of the students is not facilitated.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a process for making student exercise book paper comprising the steps of:

Step one, processing papermaking raw materials into raw material particles through a special crusher, adding the raw material particles into a special container, adding sodium hydrosulfite, sodium hydroxide, sodium sulfide and anthraquinone into the container, and blending into uniform shredded paper pulp through a stirrer;

Step two, the obtained crushed paper pulp is screened by a pressure screen to remove coarse and hard impurities, so as to obtain primary filter crushed paper pulp;

Step three, adding the preliminary filtered and crushed paper pulp into a fiber separator, and purifying the fiber content in the crushed paper pulp;

step four, adding the fine-filtered and purified crushed paper pulp into a boiling appliance, heating and boiling the crushed paper pulp for 2 hours, naturally cooling the boiled crushed paper pulp, adding a proper amount of sodium hydroxide into the crushed paper pulp, heating the crushed paper pulp to 50 ℃ again, continuously preserving the heat of the crushed paper pulp at 50 ℃ for 6 hours, and separating lignin from the crushed paper pulp to obtain paper pulp mainly containing the lignin;

step five, adding sodium hypochlorite into the separated paper pulp, heating to 50 ℃, keeping for 6 hours again to bleach the paper pulp, adding water to dilute the bleached paper pulp, standing, filtering out supernatant, and keeping the bottom paper pulp for later use;

Sixthly, adding polyhexamethylene biguanide and 1, 2 propylene glycol into the bleached paper pulp, and uniformly stirring to increase the antibacterial property of the paper pulp;

Step seven, uniformly scattering the paper pulp subjected to the antibacterial treatment on a paper machine, setting paper of various types according to production requirements, and heating the paper machine at 55 ℃ until the paper is in a semi-dry state;

Step eight, adding the standby protective pigment into a proper amount of clear water, uniformly stirring the pigment and the water to prepare a protective dye, adding the semi-dry paper into the protective dye, soaking for 15s, taking out, and draining the water on the outer surface;

Step nine, adding the dip-dyed paper into a dryer, drying and compacting the paper at a high temperature, and performing calendaring by using a calendar to prepare bulk roll paper;

printing the large roll paper, and then cutting and binding the formed large roll paper according to the specification of the student exercise book.

preferably, in the first step, the papermaking raw material adopts big trees or reed grass, and the particle size of the raw material particles is 1 mm.

preferably, the concentration of the paper pulp prepared in the first step is 12-18%.

Preferably, in the second step, the pressure of the pressure screen is controlled to be 5MPa, and the aperture of the screen mesh is 3mm, so that the primary filter crushed paper pulp is obtained.

preferably, in the seventh step, the water content of the paper in the semi-dry state accounts for 10-20% of the weight of the whole paper, and the paper cannot be loosened and fall off after being taken up.

preferably, the protective pigment in the step eight adopts multiple colors such as light yellow, light blue, light green, gray and the like, so that a coating with a required color can be formed on the surface of the paper, and the color of the coating has a reflection spectrum wavelength of 500nm-610 nm.

preferably, the water content of the paper dried in the ninth step is lower than 3%.

(III) advantageous effects

The invention provides a process for making student exercise book paper. The method has the following beneficial effects:

According to the process for manufacturing the paper of the student exercise book, the polyhexamethylene biguanide and the 1, 2 propylene glycol are added into the bleached paper pulp and are uniformly stirred, so that the breeding of bacteria is inhibited and the antibacterial property of the paper pulp is increased when the paper is in a humid environment; the protective dye is prepared by adding pigments with multiple colors such as light yellow, light blue, light green, gray and the like into clear water, so that a coating with a required color is formed on the surface of the paper, the color of the coating has a reflection spectrum wavelength of 500nm-610nm, and the protective capability of the paper is improved.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.