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Water-soluble film paper and preparation method thereof

A water-soluble film and film paper technology, applied in special paper, paper, papermaking, etc., can solve the problems of easy peeling and cleaning, and achieve the effect of improving surface tension

Inactive Publication Date: 2015-07-01
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects that the existing paper trademarks or labels are not easy to peel off and clean after use, and develop a completely water-soluble film paper. The present invention also provides a preparation method for the water-soluble film paper

Method used

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  • Water-soluble film paper and preparation method thereof
  • Water-soluble film paper and preparation method thereof
  • Water-soluble film paper and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The formula of film paper raw material consists of:

[0036]

[0037]

[0038] A preparation method of water-soluble film paper, comprising the following steps:

[0039] (1) Dissolution: Add the film paper raw material into 400Kg water, heat to 90°C until the material is completely dissolved;

[0040] (2) Film formation: keep the temperature of the solution in step (1) at 90°C, let it stand for defoaming and defoaming for 12 hours (it only takes 1 hour if ultrasonic defoaming and defoaming is used), and then cool to 50°C, It is cast onto a clean steel strip through the casting touch head, and then passed through 120-180°C (the temperature range here refers to the range of heating temperature control of the four drying areas in the drying tunnel: 120°C, 150°C, 180°C and 160°C ) drying tunnel for drying and film formation;

[0041] (3) Paper forming: After the film is dried and rolled, it is aged at room temperature for 24 hours, and then the film is unrolled and ...

Embodiment 2

[0046] The formula of film paper raw material consists of:

[0047]

[0048]

[0049] A preparation method of water-soluble film paper, comprising the following steps:

[0050] (1) Dissolution: Add the film paper raw material into 500Kg water, heat to 90°C until the material is completely dissolved;

[0051] (2) Film formation: keep the temperature of the solution in step (1) at 90°C, let it stand for defoaming and defoaming for 12 hours, then cool to 60°C, cast it on a clean steel belt through a casting die, and then Dry and form a film through a drying tunnel at 120-180°C;

[0052] (3) Paper forming: After the film is dried and rolled, it is aged at room temperature for 24 hours, and then the film is unrolled and re-rolled to form an opaque white film paper.

[0053] After testing, the prepared water-soluble paper has a tensile strength of 26.3Mpa, an elongation at break of 183%, and a strong right-angle tear strength of 77KN / m; it can be written smoothly with water-...

Embodiment 3

[0056] The formula of film paper raw material consists of:

[0057]

[0058] A preparation method of water-soluble film paper, comprising the following steps:

[0059] (1) Dissolution: Add the film paper raw material into 450Kg water, heat to 95°C until the material is completely dissolved;

[0060] (2) Film formation: keep the temperature of the solution in step (1) at 92°C, let it stand for defoaming and defoaming for 12 hours, then cool to 50°C, cast it on a clean steel belt through a casting die, and then Dry and form a film through a drying tunnel at 120-180°C;

[0061] (3) Paper forming: After the film is dried and rolled, it is aged at room temperature for 24 hours, and then the film is unrolled and re-rolled to form an opaque white film paper.

[0062] After testing, the prepared water-soluble paper has a tensile strength of 24.5Mpa, an elongation at break of 179%, and a strong right-angle tear strength of 72KN / m; it can be written smoothly with water-based pens a...

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Abstract

The invention discloses a water-soluble film paper and a preparation method thereof. The preparation method comprises the following steps of: adding film paper raw materials into water, heating to 90-95 DEG C till the materials are completely dissolved, wherein the following film paper raw materials are adopted in percentage by weight: 60-79% of polyvinyl alcohol, 10-29% of polyhydroxyl plasticizer, 10-25% of thiourea, 0.3-1.0% of surface tension regulator, 0.1-0.3% of mould inhibitor, 0.1-0.3% of slipping agent and 0.2-0.5% of film-forming auxiliary agent; and carrying out film forming, and then carrying out paper moulding, so as to form non-transparent white film paper. The water-soluble film paper disclosed by the invention is applicable to writing and printing and has the characteristics of common wood pulp paper. The water-soluble film paper prepared by the invention can be rapidly and completely dissolved in water, water quality after the paper is dissolved in water is still clear and transparent, and no sediment dirt or turbid matter is produced.

Description

technical field [0001] The invention relates to a paper suitable for writing and printing; in particular, it relates to a water-soluble film paper and a preparation method thereof. This water-soluble film paper is suitable for writing with commonly used water-based and oil-based pens. The writing is smooth and the ink is uniform and clear; other printing defects. Background technique [0002] Paper suitable for printing is often used as trademarks and labels of some commodities, especially on some containers that need to be recycled and reused, such as glass bottled beer trademarks, beverage trademarks, hospital drug labels, etc.; the biggest feature of these trademarks and labels That is, after use, it must be cleaned and disinfected before reuse. If traditional paper trademarks and labels are used, the recovered items (such as beer bottles) must be washed at high temperature in an environment with alkaline detergent , otherwise the paper trademarks or labels pasted on th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/00D21H17/36D21H21/14
Inventor 崔跃飞
Owner SOUTH CHINA UNIV OF TECH
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