阅读说明：本技术 一种柔版印刷用接装原纸的制备方法 (Preparation method of tipping base paper for flexographic printing ) 是由 刘玲红 邱诗波 纪敏 阳访利 于 2019-11-29 设计创作，主要内容包括：本发明公开了一种柔版印刷用接装原纸的制备方法,所述柔版印刷用接装原纸的制备方法步骤如下：S1、纤维主料的预处理；S2、添加填料；S3、打浆加工；S4、消泡处理,将消泡剂添加至打浆机内,S5、消毒处理,将消泡后的纸浆放入消毒缸内进行杀菌消毒,并且添加杀菌剂进行辅助杀菌；S6、纸浆烘干；S7、分切包装。本发明提供一种柔版印刷用接装原纸的制备方法,通过将纤维主料为竹片和鲜花。本发明制得的烟用接装纸原纸本身具有较好的透气性能,透气度较高,能起到较好的降焦油效果,对降低吸烟对人体的危害具有促进作用。(The invention discloses a preparation method of a tipping base paper for flexographic printing, which comprises the following steps: s1, pretreating the fiber main material; s2, adding a filler; s3, pulping; s4, defoaming, namely adding a defoaming agent into a pulping machine, S5, sterilizing, namely putting the defoamed paper pulp into a sterilizing cylinder for sterilization and disinfection, and adding a bactericide for auxiliary sterilization; s6, drying the paper pulp; and S7, slitting and packaging. The invention provides a preparation method of tipping base paper for flexographic printing. The base paper of the tipping paper for the cigarette, which is prepared by the invention, has good air permeability and high air permeability, can play a good tar reduction effect, and has a promotion effect on reducing the harm of smoking to human bodies.)

1. A preparation method of tipping base paper for flexographic printing is characterized by comprising the following steps:

s1, pretreating the main fiber materials, namely firstly crushing the main fiber materials by a crusher, then putting the crushed main fiber materials into a reaction kettle, adding water with the volume 20-30 times that of the main fiber materials, heating to 60-80 ℃, and stirring, wherein the main fiber materials are bamboo chips and fresh flowers;

s2, adding a filler, heating and stirring the main fiber material for 1.5-2 h, adding the filler, wherein the filler is calcium carbonate, the adding mass of the calcium carbonate is 15-20% of that of the main fiber material, and then continuously keeping the temperature and stirring at 60-80 ℃;

s3, pulping, namely, after the main fiber material and the filler are stirred for 1.5 hours in a heat preservation way, putting the main fiber material and the filler into a pulping machine for pulping, and adding an auxiliary agent during pulping until the main fiber material and the filler are pulped to be foamed;

s4, defoaming, namely adding a defoaming agent into a pulping machine, wherein the addition amount of the defoaming agent is 1-3PPM of the total mass of the paper pulp;

s5, performing disinfection treatment, namely putting the defoamed paper pulp into a disinfection cylinder, and adding a bactericide for sterilization and disinfection;

s6, drying the paper pulp, namely drying the paper pulp through a microwave paper pulp dryer, firstly injecting the paper pulp into a tray of the microwave paper pulp dryer, and then opening the microwave paper pulp dryer to dry the paper pulp;

and S7, cutting and packaging, wherein the paper after the paper pulp is dried is cut and packaged.

2. The method of producing a tipping base paper for flexographic printing according to claim 1, characterized in that: the microwave of the microwave pulp dryer refers to electromagnetic wave with the frequency of 300MHz-300 GHz.

3. The method of producing a tipping base paper for flexographic printing according to claim 1, characterized in that: the fresh flowers in the step S1 are preferably roses, lemongrass or mint, and the mass of the fresh flowers accounts for 5-10% of the main fiber material.

4. The method of producing a tipping base paper for flexographic printing according to claim 1, characterized in that: the auxiliary agent in the step S3 is polyvinyl alcohol and urea-formaldehyde resin, the addition amount of the polyvinyl alcohol is 0.1-0.3% of the total mass of the paper pulp, and the addition amount of the urea-formaldehyde resin is 2-3% of the total mass of the paper pulp.

5. The method of producing a tipping base paper for flexographic printing according to claim 1, characterized in that: the bactericide in the step S5 is an isothiazolinone bactericide, and the addition amount of the bactericide is 1-3PPM of the total mass of the paper pulp.

Technical Field

The invention belongs to the technical field of printing, and particularly relates to a preparation method of tipping base paper for flexographic printing.

Background

The existing cigarette factory generally adopts flexible printing to butt joint raw paper. The tipping base paper for cigarette is one of the main materials of cigarette products, is used as a cigarette packaging material for the outer package of a filter tip cigarette, is called as tipping base paper because the appearance of the tipping base paper is similar to pine wood grain, and belongs to special industrial paper. The tipping base paper for cigarettes is printed and cut to form tipping paper, commonly called tipping paper, and the wear resistance, smoothness and physical strength of the currently produced tipping base paper for cigarettes cannot meet the requirements of a flexography printing process.

The Chinese patent with the application number of CN201710190831.3 discloses a preparation method of base paper of tipping paper for cigarettes, belonging to the technical field of preparation of materials for cigarettes. The preparation method comprises the steps of firstly, taking transparent resin and organic silicon as raw materials, forming a hydrophobic breathable hard network structure after hydrolysis, improving wear resistance, pulping cypress and poplar residues and the like, mixing the obtained pulp with iron yellow, polyvinyl alcohol and the like, then pressing and forming by a paper pressing machine to obtain wet paper, mixing sodium methyl silanol, lecithin and an ethanol solution, mixing with xanthan gum to obtain a steeping liquor, coating the prepared product on the wet paper, drying, steeping a layer of hydrophobic breathable substance on the surface of the paper, and finally drying, pressing and finishing the paper to obtain the base paper of the cigarette tipping paper. However, with the increase of awareness of people on their health and environmental protection, the above technical solutions have insufficient air permeability. We propose a method for preparing a tipping base paper for flexographic printing.

Disclosure of Invention

The invention aims to provide a preparation method of tipping base paper for flexographic printing, which has good air permeability, good tar and harm reducing effects and good paper strength and is beneficial to printing by arranging fiber main materials into bamboo chips and flowers.

In order to achieve the purpose, the invention provides the following technical scheme:

a preparation method of tipping base paper for flexographic printing comprises the following steps:

s1, pretreating the main fiber material, namely firstly crushing fresh flowers and bamboo chips by a crusher, then putting the crushed main fiber material into a reaction kettle, adding water with the volume 20-30 times that of the main fiber material, heating to 60-80 ℃, and stirring;

s2, adding a filler, heating and stirring the main fiber material for 1.5-2 h, adding the filler, wherein the filler is calcium carbonate, the adding mass of the calcium carbonate is 15-20% of that of the main fiber material, and then continuously keeping the temperature and stirring at 60-80 ℃;

s3, pulping, namely, after the main fiber material and the filler are stirred for 1.5 hours in a heat preservation way, putting the main fiber material and the filler into a pulping machine for pulping, and adding an auxiliary agent during pulping until the main fiber material and the filler are pulped to be foamed;

s4, defoaming, namely adding a defoaming agent into a pulping machine, wherein the addition amount of the defoaming agent is 1-3PPM of the total mass of the paper pulp;

s5, performing disinfection treatment, namely putting the defoamed paper pulp into a disinfection cylinder, and adding a bactericide for sterilization and disinfection;

s6, drying the paper pulp, namely drying the paper pulp through a microwave paper pulp dryer, firstly injecting the paper pulp into a tray of the microwave paper pulp dryer, and then opening the microwave paper pulp dryer to dry the paper pulp;

and S7, cutting and packaging, wherein the paper after the paper pulp is dried is cut and packaged.

Preferably, the microwave pulp dryer in step S6 is also called a microwave dryer, which is a microwave dryer used for drying food, medicinal materials, wood, building materials, paper boards and food and drug packaging paper, and compared with the conventional drying equipment, the microwave drying equipment is characterized in that: the microwave drying device has the advantages of high drying speed, high efficiency, environmental protection, energy conservation, strong sterilization function in the microwave drying process, low-carbon and economical response, the working principle of the microwave drying device is that the penetrability of microwaves is utilized to heat and improve the temperature of materials, so that the moisture in the materials is vaporized and evaporated, the evaporated water vapor is discharged by a dehumidification system to achieve the purpose of drying the materials, the microwave of the microwave pulp dryer refers to electromagnetic wave with the frequency of 300MHz-300GHz, is short for a limited frequency band in radio wave, that is, an electromagnetic wave having a wavelength of 1m to 1mm is a general term for a decimetric wave, a centimeter wave, and a millimeter wave, and a microwave frequency is higher than a general radio wave frequency, and is also generally called an "ultra high frequency electromagnetic wave", and a microwave has a particle duality as an electromagnetic wave, and an energy of a microwave quantum is 1.99 × 10-25 to 1.99 × 10-22 j.

Preferably, the fiber main material in the step S1 is bamboo chips and fresh flowers, the fresh flowers are preferably roses, lemon grass or mint, and the mass of the fresh flowers accounts for 5-10% of the fiber main material.

Preferably, the assistant in step S3 is polyvinyl alcohol and urea-formaldehyde resin, the addition amount of the polyvinyl alcohol is 0.1-0.3% of the total mass of the pulp, and the addition amount of the urea-formaldehyde resin is 2-3% of the total mass of the pulp.

Preferably, the beating machine in step S3 is to use mechanical action to process pulp fibers suspended in water for beating, and use physical method to process pulp fibers in water mechanically or by fluid, so that the fibers are subjected to shearing force, change the shape of the fibers, and make the pulp obtain certain characteristics, so as to ensure that the paper made by the beating machine meets the expected quality requirements, and the fibers are subjected to shearing, kneading, combing and the like of machine parts, and simultaneously the cell walls of the fibers are displaced, deformed, and cracked to absorb water and swell, so as to generate fine fibers, so that the pulp has softness and plasticity, and the hydroxyl groups in the cellulose molecular chains are increased to combine with hydrogen chains, thereby improving the bonding force between fibers.

Preferably, the defoaming agent in the step S4 is modified silicone oil.

Preferably, the bactericide in step S5 is an isothiazolinone bactericide, and the amount of the bactericide added is 1-3PPM of the total mass of the pulp.

The invention has the beneficial effects that:

(1) the base paper of the tipping paper for the cigarette has good air permeability, can play a good tar reduction effect, and has a promotion effect on reducing the harm of smoking to human bodies. (2) The base paper of the tipping paper for the cigarettes prepared by the invention has high strength and good wear resistance, and can meet the printing requirements of the tipping paper for the cigarettes.

(3) The tipping base paper prepared by the invention contains fresh flower components, generates pleasant fragrance during combustion, and improves the experience of consumers.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.