Novel compound paper material and preparation method thereof

A new material and paper technology, applied in the direction of adhesives, etc., can solve the problems of easy leakage of paper surface coating process, affecting the overall performance of composite paper, toxic and harmful gas emissions, etc., to achieve good promotion value, good economic and environmental protection value, The effect of easy recycling

Inactive Publication Date: 2017-08-29
上海海冰新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the amount of coating materials in the above-mentioned coated paper is large, which is easy to cause waste of resources. The composite paper obtained by coating cannot be used as a product with air permeability requirements. When the surface roughness of the paper is large, the unevenness of the paper surface makes the The coating process is prone to leaks, which affect the overall performance of the composite paper obtained by coating. In addition, the adhesives commonly used in coating often produce toxic and harmful gas emissions, which have adverse effects on the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A preparation method of a new material of sheath-core fiber composite paper, the steps are as follows:

[0030] (1) Composite polylactic acid with a melting point of 52°C and polylactic acid with a melting point of 120°C by sheath-core spinning method, wherein the addition of polylactic acid with a melting point of 52°C accounts for 10wt% of the total amount of polylactic acid , the polylactic acid with a melting point of 120°C has a diameter of 15 μm, a tensile strength of 2.8 cN / dtex, and an elongation at break of 28%;

[0031] (2) The composite is placed on an unwinding device, and the longitudinal tensile strength is 2.8KN / m, the transverse tensile strength is 2.3KN / m, the longitudinal tear strength is 420mN, and the transverse tear strength is 325mN paper Placed on another unwinding device, the paper and the compound are simultaneously heated and pressed by a hot roller so that the polylactic acid is compounded with the double surface of the paper in the form of a ...

Embodiment 2

[0034] A preparation method of a new material of sheath-core fiber composite paper, the steps are as follows:

[0035] (1) Composite polylactic acid with a melting point of 180°C and polylactic acid with a melting point of 300°C by sheath-core spinning method, wherein the amount of polylactic acid with a melting point of 180°C accounts for 98wt% of the total amount of polylactic acid , the polylactic acid with a melting point of 300°C has a diameter of 50 μm, a tensile strength of 3.5 cN / dtex, and an elongation at break of 80%;

[0036] (2) Place the compound on an unwinding device, and the longitudinal tensile strength is 2.5KN / m, the transverse tensile strength is 2.0KN / m, the longitudinal tear strength is 400mN, and the transverse tear strength is 300mN paper Placed on another unwinding device, the paper and the compound are simultaneously heated and pressed by a hot roller so that the polylactic acid is compounded with a single surface of the paper in the form of a screen, a...

Embodiment 3

[0039] A preparation method of a new material of sheath-core fiber composite paper, the steps are as follows:

[0040] (1) Composite polyester with a melting point of 70°C and polyester with a melting point of 270°C by sheath-core spinning method, wherein the amount of polyester with a melting point of 70°C accounts for 80wt% of the total polyester, and the melting point is 70 The diameter of polyester at ℃ is 25μm, the tensile strength is 2.9cN / dtex, and the elongation at break is 32%;

[0041] (2) The composite is placed on an unwinding device, and the longitudinal tensile strength is 2.55KN / m, the transverse tensile strength is 2.1KN / m, the longitudinal tear strength is 405mN, and the transverse tear strength is 308mN paper Placed on another unwinding device, the paper and the composite are simultaneously heated and pressed by a hot roller so that the polyester is composited with a single surface of the paper in the form of a screen, and the weight of the paper is 38g / m 2 ...

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Abstract

The invention relates to a novel compound paper material and a preparation method thereof. The preparation method includes: compounding an adhesive and reinforcing fibers to obtain a compound, placing the compound on an unwinding device, placing paper on another unwinding device, using one hot roller to perform hot rolling on the paper and the compound at the same time, and using a winding device to wind the compound paper after the hot compression molding. The prepared novel compound paper material is high in tensile strength and tear strength and extremely good in economic value and popularization value. The preparation method has the advantages that the reinforcing fibers are compounded with the surface of the paper, low material consumption, low cost and low requirements on the paper material before the compounding are achieved, the adhering effect of the adhesive can be brought into play after the hot compression, and the problems that a traditional adhesive is inconvenient to use and high in cost and easily generates toxic and harmful substances are solved.

Description

technical field [0001] The invention belongs to the field of papermaking, and relates to a new composite paper material and a preparation method thereof. Background technique [0002] The strength of paper refers to the resistance of the paper industry to various mechanical forces, generally including transverse / longitudinal tensile strength, tear strength and bending strength, etc. It is one of the important indicators to measure the performance of paper. The paper industry is one of the important industries in my country. In recent years, with the rapid development of my country's paper industry, people's demand for high-grade paper products has increased significantly, and the improvement of paper strength has become more and more important. [0003] In order to meet people's demand for high-strength paper, researchers have done a lot of research. For example, the patent CN105696409A uses sulfuric acid to pretreat the calcium silicate filler, adds the treated filler to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/32B32B29/02
CPCD21H1/04B32B29/02
Inventor 黄毅王春江
Owner 上海海冰新材料科技有限公司
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