阅读说明：本技术 一种工业包装纸的制造方法 (Manufacturing method of industrial packaging paper ) 是由 肖乾楚 于 2020-07-01 设计创作，主要内容包括：本发明涉及包装纸技术领域,具体地说,涉及一种工业包装纸的制造方法,本发明制备的工业包装纸,平滑度高、湿强度高、填料及纤维流失量少、抗水效果更佳以及使用寿命长,通过针叶木浆、阔叶木浆、竹浆料以1：1：1的比例混合,纸张可回收再用或在自然界中生物降解,从而大大降低了对环境造成的危害,具有良好的使用效果和积极的意义,通过添加少量的钛白粉配合滑石粉用作于无机填料,提高了包装纸的表面平滑度,使纸张内部空隙变小变细；采用聚酰胺聚环氧氯丙烷树脂用作湿强剂,增强了包装纸的湿强度,采用聚乙烯亚胺和聚丙烯胺的混合物用作助留剂,减少造纸过程中填料和细小纤维的流失,提高了包装纸的质量。(The invention relates to the technical field of packaging paper, in particular to a manufacturing method of industrial packaging paper, the industrial packaging paper prepared by the invention has high smoothness, high wet strength, less loss of filler and fiber, better water-resistant effect and long service life, and the weight ratio of softwood pulp, hardwood pulp and bamboo pulp is 1: 1: 1, the paper can be recycled or biodegraded in nature, so that the harm to the environment is greatly reduced, the use effect is good, the positive significance is achieved, and the surface smoothness of the packaging paper is improved by adding a small amount of titanium dioxide and talcum powder which are matched with inorganic filler, so that the internal gap of the paper is reduced and thinned; the polyamide polyepichlorohydrin resin is used as a wet strength agent, so that the wet strength of the packaging paper is enhanced, the mixture of polyethyleneimine and polyacrylamide is used as a retention aid, the loss of fillers and fine fibers in the papermaking process is reduced, and the quality of the packaging paper is improved.)

1. A manufacturing method of industrial wrapping paper is characterized in that: the material comprises the following components by weight: 170 parts of mixed fiber slurry, 35-45 parts of modified starch, 11-15 parts of rosin sizing material, 25-35 parts of talcum powder, 15-25 parts of titanium dioxide, 7-10 parts of wet strength agent, 6-10 parts of dry strength agent, 6-9 parts of retention aid, 1-3 parts of turpentine, 1-3 parts of paraffin and 0.2-0.5 part of defoaming agent, and the specific preparation method comprises the following steps:

s1: weighing the raw materials in parts by weight;

s2: mixing the mixed fiber pulp, the modified starch, the rosin sizing material, the talcum powder and the titanium dioxide in a mixing stirrer for 30-40min, and filtering impurities of the mixed mixture through a filter screen to obtain a raw material mixture;

s3: putting the raw material mixture into a precipitation container for precipitation, adding a wet strength agent, a dry strength agent, a retention aid, turpentine, paraffin and a defoaming agent, and stirring the raw material mixture in the precipitation container by using a stirrer to obtain a paper pulp mixture;

s4: preserving the heat of the treated paper pulp mixture at 85-90 ℃ for 15-20min, stirring in the heat preservation process, and pulping the heat-preserved pulp with the pulping degree of 32-36 DEG SR;

s5: molding the pulped raw materials by using a packaging paper mold, and drying after molding, wherein the drying temperature is 80-110 ℃, so as to obtain a semi-finished product;

s6: spraying environment-friendly paraffin on the front side and the back side of the semi-finished product, and naturally drying to obtain the industrial packaging paper.

2. A method of manufacturing an industrial wrapper according to claim 1, wherein: the mixed fiber pulp comprises softwood pulp, hardwood pulp and bamboo pulp, and the mixed fiber pulp is prepared by mixing the following components in a ratio of 1: 1: 1, and mixing.

3. A method of manufacturing an industrial wrapper according to claim 1, wherein: the modified starch is flake starch granule prepared by mechanical grinding, and has average particle diameter of 1.0-1.5 μm.

4. A method of manufacturing an industrial wrapper according to claim 1, wherein: the wet strength agent is polyamide polyepichlorohydrin resin.

5. A method of manufacturing an industrial wrapper according to claim 1, wherein: the dry strength agent is polyacrylamide.

6. A method of manufacturing an industrial wrapper according to claim 1, wherein: the retention aid is a mixture of polyethyleneimine and polyallylamine.

7. A method of manufacturing an industrial wrapper according to claim 1, wherein: the defoaming agent is polyoxyethylene polyoxypropylene pentaerythritol ether or polyoxyethylene polyoxypropylene amine ether.

8. A method of manufacturing an industrial wrapper according to claim 1, wherein: the content of magnesium oxide in the talcum powder is 26-29 wt%, the particle mesh number is 1000-1200 meshes, and the content of silicon dioxide is 60-62 wt%.

9. A method of manufacturing an industrial wrapper according to claim 1, wherein: the content of titanium dioxide in the titanium dioxide is 93-96 wt%.

10. A method of manufacturing an industrial wrapper according to claim 1, wherein: the rotating speed of the mixing stirrer is 35-40r/min, and the rotating speed of the stirrer is 120-150 r/min.

Technical Field

The invention relates to the technical field of packaging paper, in particular to a manufacturing method of industrial packaging paper.

Background

With the rapid development of the circulation of substances, the demand for various environment-friendly packaging materials is increasing day by day. However, the plastics and products thereof used at present cause great pollution to the environment. Accordingly, the molded products of the paper board and the paper pulp have great market demands and good environmental protection benefits as substitutes of various plastic products at present.

The packaging paper is a common packaging material, and the current packaging paper generally has printed patterns. However, the manufacturing process and the manufacturing raw materials of the packaging paper are too simple and single, so that the packaging paper has the advantages of low use feeling, low texture, poor water resistance and low surface strength.

Disclosure of Invention

The invention aims to provide a manufacturing method of industrial wrapping paper, which solves the problem that the prior wrapping paper manufacturing process and manufacturing raw materials are too simple and single.

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

the manufacturing method of the industrial packaging paper comprises the following raw materials in parts by weight: 170 parts of mixed fiber slurry, 35-45 parts of modified starch, 11-15 parts of rosin sizing material, 25-35 parts of talcum powder, 15-25 parts of titanium dioxide, 7-10 parts of wet strength agent, 6-10 parts of dry strength agent, 6-9 parts of retention aid, 1-3 parts of turpentine, 1-3 parts of paraffin and 0.2-0.5 part of defoaming agent, and the specific preparation method comprises the following steps:

s1: weighing the raw materials in parts by weight;

s2: mixing the mixed fiber pulp, the modified starch, the rosin sizing material, the talcum powder and the titanium dioxide in a mixing stirrer for 30-40min, and filtering impurities of the mixed mixture through a filter screen to obtain a raw material mixture;

s3: putting the raw material mixture into a precipitation container for precipitation, adding a wet strength agent, a dry strength agent, a retention aid, turpentine, paraffin and a defoaming agent, and stirring the raw material mixture in the precipitation container by using a stirrer to obtain a paper pulp mixture;

s4: preserving the heat of the treated paper pulp mixture at 85-90 ℃ for 15-20min, stirring in the heat preservation process, and pulping the heat-preserved pulp with the pulping degree of 32-36 DEG SR;

s5: molding the pulped raw materials by using a packaging paper mold, and drying after molding, wherein the drying temperature is 80-110 ℃, so as to obtain a semi-finished product;

s6: spraying environment-friendly paraffin on the front side and the back side of the semi-finished product, and naturally drying to obtain the industrial packaging paper.

Preferably, the mixed fiber pulp comprises softwood pulp, hardwood pulp and bamboo pulp, and the three are mixed in a ratio of 1: 1: 1, and mixing.

Preferably, the modified starch is flake starch particles obtained by mechanical milling, and the average particle diameter of the flake starch particles is 1.0-1.5 μm.

Preferably, the wet strength agent is polyamide polyepichlorohydrin resin.

Preferably, the dry strength agent is polyacrylamide.

Preferably, the retention aid is a mixture of polyethyleneimine and polyallylamine.

Preferably, the defoaming agent is polyoxyethylene polyoxypropylene pentaerythritol ether or polyoxyethylene polyoxypropylene amine ether.

Preferably, the content of the magnesium oxide in the talcum powder is 26-29 wt%, the particle size is 1000-1200 meshes, and the content of the silicon dioxide is 60-62 wt%.

Preferably, the content of the titanium dioxide in the titanium dioxide is 93-96 wt%.

Preferably, the rotation speed of the mixing stirrer is 35-40r/min, and the rotation speed of the stirrer is 120-150 r/min.

Compared with the prior art, the invention has the beneficial effects that: the industrial packing paper prepared by the manufacturing method of the industrial packing paper has high smoothness, high wet strength, less loss of filler and fiber, better water-resistant effect and long service life, and is prepared by mixing softwood pulp, hardwood pulp and bamboo pulp in a proportion of 1: 1: 1, the paper can be recycled or biodegraded in nature, so that the harm to the environment is greatly reduced, the use effect is good, the positive significance is achieved, and the surface smoothness of the packaging paper is improved by adding a small amount of titanium dioxide and talcum powder which are matched with inorganic filler, so that the internal gap of the paper is reduced and thinned; the polyamide polyepichlorohydrin resin is used as a wet strength agent, so that the wet strength of the packaging paper is enhanced, and the mixture of polyethyleneimine and polyacrylamide is used as a retention aid, so that the loss of fillers and fine fibers in the papermaking process is reduced, and the quality of the packaging paper is improved; the defoaming agent is adopted to reduce the viscosity of the sol solution, improve the workability, the solidified sol film has smooth and bubble-free surface, the starch and rosin sizing materials are added into the raw materials to be used as sizing materials, and the sizing materials are stirred with the biodegradable bamboo fibers and other raw materials, so that the water resistance of the packaging paper is enhanced, the surface strength and the friction resistance of the packaging paper are improved, the hair falling phenomenon of the paper in the forming process is reduced, the attractiveness and texture of the product are improved, and meanwhile, the environment-friendly paraffin is sprayed on the front side and the back side of the semi-finished product in the preparation process, so that the water resistance effect of the packaging paper is further enhanced.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.