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A kind of manufacturing method of multi-layer hand-written sheet

A production method and technology of hand-made sheets, which are applied in textiles and papermaking, paper machines, papermaking, etc., can solve problems such as large equipment that is not suitable for industrial production, affecting the reference value of test results, and unstable bonding force of paper layers. Achieve the effects of reducing the probability of broken paper, optimizing diversity and low cost

Active Publication Date: 2018-02-09
GUANGDONG WALKKIND SPECIAL FIBERBOARD TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in order to study the paper performance of the composited paperboard in the laboratory, it is necessary to prepare multi-layer hand-sheets for its performance research, and considering the time and equipment cost constraints, it is not suitable for industrial production. Large equipment, but due to the quality and performance limitations of the prepared multilayer handsheets, the reference value of the test results is affected
At present, the existing preparation process for multi-layer hand-written sheets, such as a method for making multi-layer hand-written sheets in a laboratory disclosed in Patent No. 200910098387.8, is to laminate single sheets of wet paper after pressing, And when each layer is superimposed, it is necessary to carry out vertical and horizontal cross-stacking and rolling, and finally squeeze the superimposed hand-written sheets, but there are still deficiencies. Often in the process of preparing multi-layer hand-written sheets, often due to Among the stacked multiple thin paper sheets, when multiple overlapping thin paper sheets are rolled at the same time, the lower thin paper sheets will be deformed or cracked due to the excessive loss of water caused by repeated rolling, so it is difficult to control the paper in the When compounding, the stability of moisture is guaranteed, the bonding force between the paper layers is unstable, the quality is uneven, easy to break the paper, crack the paper, and difficult to handle

Method used

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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  • A kind of manufacturing method of multi-layer hand-written sheet
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  • A kind of manufacturing method of multi-layer hand-written sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0055] Embodiment 2-a kind of preparation method of multi-layer hand-sheet, comprises the steps:

[0056] (1) Pulp preparation: add fiber slurry, AKD sizing agent, TH-P50, polyacrylamide, styrene-butadiene latex, dyes and water into the refiner to grind the pulp, and then pass the paper former to grind The final slurry is diluted, fully stirred and screened to filter water to obtain pulp;

[0057] (2) Pulp precipitation: the pulp obtained in step (1) is deposited in a paper former, and the wet tissue paper is taken out, wherein the grammage of the wet tissue paper is 15g / cm 2 , the thickness is 1.2mm, the tightness is 0.4g / cm 3 , with a water content of 80%;

[0058] (3) Covering and rolling: use cotton cloth to cover on the wet tissue paper, roll to remove moisture, and remove the dehydrated tissue paper from the cotton cloth;

[0059] (4) Lamination: After repeating steps (1) to (3) to obtain a predetermined number of thin paper sheets, stack them in sequence, and spray o...

Embodiment 3

[0062] Embodiment 3--a kind of preparation method of multilayer hand-sheet, comprises the steps:

[0063] (1) Pulp preparation: add fiber slurry, AKD sizing agent, TH-P50, glyoxal polyacrylamide, acrylate latex, dyes and water into a refiner to grind the pulp, and then form it through the paper sheet The machine dilutes the polished slurry, fully stirs and screens water to obtain pulp;

[0064] (2) Pulp precipitation: the pulp obtained in step (1) is deposited in a paper former, and the wet tissue paper is taken out, wherein the grammage of the wet tissue paper is 12.5g / cm 2 , the thickness is 0.9mm, the tightness is 0.5g / cm 3 , with a water content of 77.5%;

[0065] (3) Covering and rolling: use cotton cloth to cover on the wet tissue paper, roll to remove moisture, and remove the dehydrated tissue paper from the cotton cloth;

[0066] (4) Lamination: After repeating steps (1) to (3) to obtain a predetermined number of thin paper sheets, stack them in sequence, and spray ...

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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Abstract

The invention discloses a method for manufacturing a multi-layer handsheet. The method comprises the following steps: (1) preparing paper slurry from prepared slurry through a paper sheet molding machine; (2) depositing the paper slurry in the paper sheet molding machine, and forming and taking wet thin paper sheets; (3) covering the wet thin paper sheets with cotton cloth, performing rolling so as to remove moisture, and peeling off dehydrated thin paper sheets; (4) repeating steps (1) to (3) so as to obtain a preset number of thin paper sheets, sequentially overlapping the thin paper sheets, and spraying a high-temperature-resistant reinforcing agent when each thin paper sheet is overlapped; and (5) putting the overlapped thin paper sheets into a hot-pressing machine, pressing the overlapped thin paper sheets to remove moisture firstly, and then, performing heating drying, thereby obtaining the multi-layer handsheet. By adopting the method disclosed by the invention, the difficulty of later overlapping can be effectively reduced, the probability of paper breakage can be reduced, and the adhesive strength between each layer of thin paper sheets, high temperature resistance and strength of thin paper sheets can be improved, the diversity of the multi-layer handsheet can be optimized, test application range is relatively wide, the method is simple and convenient to operate and control, and the multi-layer handsheet is uniform in quality, flat and dense, low in cost and high in lamination efficiency.

Description

technical field [0001] The invention relates to the technical field of hand-sheets in the field of papermaking, in particular to a method for making multi-layer hand-sheets. Background technique [0002] At present, in order to study the paper performance of the composited paperboard in the laboratory, it is necessary to prepare multi-layer hand-sheets for its performance research, and considering the time and equipment cost constraints, it is not suitable for industrial production. Large equipment, but the reference value of the test results is affected due to the quality and performance limitations of the prepared multi-layer hand-sheets. At present, the existing preparation process for multi-layer hand-written sheets, such as a method for making multi-layer hand-written sheets in a laboratory disclosed in Patent No. 200910098387.8, is to laminate single sheets of wet paper after pressing, And when each layer is superimposed, it is necessary to carry out vertical and hori...

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 Patents(China)
IPC IPC(8): D21F13/02
CPCD21F13/02
Inventor 曾伟新
Owner GUANGDONG WALKKIND SPECIAL FIBERBOARD TECH