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Environment-friendly paper and manufacturing process thereof

A manufacturing process and technology of environmentally friendly paper, applied in the field of environmentally friendly paper and its manufacturing process, can solve the problems of uneven tearing performance of paper, unstable paper quality, limited use range, etc., and achieve excellent printing effect and strong reproducibility , Excellent chemical resistance

Inactive Publication Date: 2018-07-13
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Up to now, domestic products and processing technologies have been published using calcite, barite, dolomite, tremolite, industrial waste slag, fly ash and other types of stones as raw materials. Most of the molds are made of sheets with a straight die mouth. The middle sheet is first stretched longitudinally, and the combined surface sheet is stretched transversely to form a multi-layer stone paper with bidirectional stretching in the middle and unidirectional stretching on the surface. Such paper has uneven tear performance and poor foldability, which limits the range of use
At present, the preparation process of biaxially stretched film blowing method has also appeared, but there are no precise operating procedures for the steps of crushing, mixing, modification, extrusion, film drawing, etc., resulting in unstable quality of the produced paper. Various problems such as unevenness, low tensile capacity, weight exceeding preset, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Environmentally friendly paper X1, including base paper layer and coating. Wherein, the base paper layer is made up of 68 parts by weight of coal gangue powder, 15 parts by weight of LDPE and 0.5 parts by weight of foaming agent (azodicarbonamide), and the coating is composed of 0.05 parts by weight of latex and 0.4 parts by weight. parts by weight of nano-silica.

[0030] Its preparation method is:

[0031] Crush the coal gangue to 800 mesh and send it into the mixer. At the same time, send azodicarbonamide and LDPE into the mixer through the feeder for mixing, and heat the temperature to 110°C in the mixer to make Azodicarbonamide, LDPE and coal gangue are kneaded into a molten mass mixture. Put the molten lump mixture into the mixing chamber of the paper machine, and heat up the mixing chamber by means of electric heating, so that the lump mixture continues to soften and enter the extrusion chamber. When the temperature of the extrusion chamber reaches 140°C, use ...

Embodiment 2

[0034] Environmentally friendly paper X2, including base paper layer and coating. Wherein, the base paper layer consists of 72 parts by weight of coal gangue powder, 20 parts by weight of MDPE and 1 part by weight of foaming agent (azodicarbonamide) and lubricant (polypropylene), and the coating is composed of 0.04 4 parts by weight of latex and 0.3 parts by weight of nano-alumina.

[0035] Its preparation method is:

[0036] Crush the coal gangue to 1200 mesh and send it into the mixer. At the same time, send the azodicarbonamide, polypropylene and MDPE into the mixer through the feeder for mixing, and heat the temperature to 120 in the mixer. °C, azodicarbonamide, polypropylene, LDPE and coal gangue are kneaded into a mixture of molten lumps. Put the molten lump mixture into the mixing chamber of the paper machine, and heat up the mixing chamber by means of electric heating, so that the lump mixture continues to soften and enter the extrusion chamber. When the temperature ...

Embodiment 3

[0039] Environmentally friendly paper X3, including base paper layer and coating. Wherein, the base paper layer is composed of 75 parts by weight of coal gangue powder, 7 parts by weight of MDPE and 12 parts by weight of LDPE, and a total of 2 parts by weight of a blowing agent (alum) and a stabilizer (polyethylene wax). The coating consists of 0.01 parts by weight of latex and 0.115 parts by weight of a mixture of nano-alumina and nano-silicon dioxide.

[0040] Its preparation method is:

[0041]Crush the coal gangue to 2500 mesh and send it into the mixer. At the same time, send the alum, polyethylene wax, MDPE and LDPE into the mixer through the feeder for mixing, and heat the temperature to 125°C in the mixer. , so that alum, polyethylene wax, LDPE, MDPE and coal gangue are kneaded into a mixture of molten lumps. Put the molten blocky mixture into the mixing chamber of the paper machine, and heat up the mixing chamber by electric heating, so that the blocky mixture conti...

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Abstract

The invention provides environment-friendly paper and a manufacturing process thereof. The environment-friendly paper is prepared from a base paper layer, wherein the base paper layer is prepared fromthe following components: 68 to 75 parts by weight of colliery powder, 15 to 20 parts by weight of PE and 0.5 to 2 parts by weight of aids, wherein the PE is prepared from one or two of LDPE or MDPE.The environment-friendly paper and the manufacturing process thereof, disclosed by the invention, have the advantages of minimal and uniformly-distributed surface micro-pores, good inking performance, good printing effect, capability of reproducing the bright effect of a printing plate, as well as outstanding water resistance, oil resistance and chemical resistance.

Description

technical field [0001] The invention relates to an environmentally friendly paper and a manufacturing process thereof. Background technique [0002] Paper is an indispensable important article for people to study, work and live. Traditional papermaking, due to excessive deforestation, has caused excessive shortage of global forest resources, and papermaking production technology has caused unsolvable pollution and negative impact on the global environment, which has attracted special attention from all mankind. [0003] Environmentally friendly paper is also known as "unbreakable" paper, and one of the important classifications is "stone paper". Stone paper has a history of more than 30 years in Europe, America and Japan. Our country began to study this technology more than ten years ago. At present, due to the increasing attention to the ecological environment, stone papermaking technology has ushered in a period of rapid development. [0004] Up to now, domestic products...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/00D21F11/00D21H17/35D21H19/64
CPCD21F11/00D21H17/35D21H19/64D21H27/00
Inventor 徐琳祥丁林贤方克明陈建荣
Owner ZHEJIANG NORMAL UNIVERSITY
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