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A kind of preparation method of anti-powdering pulp molding

A pulp molding and anti-dropping technology, which is applied in paper, papermaking, textiles and papermaking, etc., can solve the problems of limited use, fiber detachment and color fading, and achieve strong adhesion, bright surface and improved use range.

Active Publication Date: 2017-02-22
广东省汇林包装科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional pulp molded products are prone to powder shedding under normal use conditions. The powder shedding refers to the phenomenon of fiber detachment and discoloration of pulp molding, which limits its use in high-end products (such as displays, measuring instruments, etc.) and other precision electronic products) and other fields

Method used

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Examples

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Effect test

preparation example Construction

[0020] The invention provides a kind of preparation method of anti-powder pulp molding, comprising the following steps:

[0021] S1. Mix the polyvinyl alcohol solution with a concentration of 1~3% and the water-based acrylic resin solution with a concentration of 1~5% in a ratio of 1:1~3 to form a solution mixture;

[0022] S2. adding the solution mixture to the pulp at a speed of 10-50g / sec, the amount added is 0.1 to 2% of the pulp mass, and stirring is carried out during the process of adding the solution mixture;

[0023] S3. Transporting the sufficiently mixed pulp material to the vacuum suction molding station;

[0024] S4. Adsorb the paper slurry by a vacuum suction machine and dehydrate it to form a wet paper blank;

[0025] S5. Send the wet paper base to a shaping mold for shaping, drying and shaping, and form pulp molded products after shaping.

[0026] In this preparation method, the polyvinyl alcohol solution with a concentration of 1-3% and the water-based acryl...

Embodiment 1

[0031] A preparation method for powder-shedding pulp molding, comprising the steps of:

[0032] S1. Mix the polyvinyl alcohol solution with a concentration of 1~3% and the water-based acrylic resin solution with a concentration of 1~5% in a ratio of 1:1~3 to form a solution mixture;

[0033] S2. adding the solution mixture to the pulp at a speed of 10-50g / sec, the amount added is 0.1 to 2% of the pulp mass, and stirring is carried out during the process of adding the solution mixture;

[0034] S3. Transporting the sufficiently mixed pulp material to the vacuum suction molding station;

[0035] S4. Adsorb the paper slurry by a vacuum suction machine and dehydrate it to form a wet paper blank;

[0036] S5. Send the wet paper base to a shaping mold for shaping, drying and shaping, and form pulp molded products after shaping.

[0037] In the step of S1, the concentration content is 1% polyvinyl alcohol solution, 1% water-based acrylic resin solution is mixed into a solution mixt...

Embodiment 2

[0039] A preparation method for powder-shedding pulp molding, comprising the steps of:

[0040] S1. Mix the polyvinyl alcohol solution with a concentration of 1~3% and the water-based acrylic resin solution with a concentration of 1~5% in a ratio of 1:1~3 to form a solution mixture;

[0041] S2. adding the solution mixture to the pulp at a speed of 10-50g / sec, the amount added is 0.1 to 2% of the pulp mass, and stirring is carried out during the process of adding the solution mixture;

[0042] S3. Transporting the sufficiently mixed pulp material to the vacuum suction molding station;

[0043] S4. Adsorb the paper slurry by a vacuum suction machine and dehydrate it to form a wet paper blank;

[0044] S5. Send the wet paper base to a shaping mold for shaping, drying and shaping, and form pulp molded products after shaping.

[0045] In the step of S1, the concentration content is 2% polyvinyl alcohol solution, 2% aqueous acrylic resin solution is mixed into solution mixture in t...

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Abstract

The invention relates to the technical field of packaging materials, and discloses a preparation method of an anti-dusting pulp mold. According to the preparation method, polyvinyl alcohol solution with concentration content of 1-3 percent and water-based acrylic resin solution of 1-5 percent are mixed into a solution mixture according to a proportion of 1:1-3; then the solution mixture prepared according to the proportion range is added into pulp at the speed of 10-50 g / s, wherein the amount of the added solution mixture is 0.1-2 percent of the mass of the pulp; for a pulp mold product, the pulp mold has bright surface and stronger adhesion force exists between fibers of the pulp mold under the action of polyvinyl alcohol, invasion of moisture during normal use can be prevented by water-based acrylic resin, and the moisture is prevented from infiltrating into the pulp mold so as not to affect the adhesion force, so that dusting of the pulp mold product during conventional use is avoided, and the application range of the pulp mold product is expanded.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to a method for preparing powder-shedding-proof pulp molding. Background technique [0002] Pulp molded products use recycled paper products as raw materials. The production process is environmentally friendly, the use process is safe, non-toxic and harmless, and it is easy to recycle after use. It is a typical green packaging product. It has been widely recognized at home and abroad in recent years. The scope of application It is getting bigger and bigger, and it will be the focus of the development of the packaging field in the next 10-20 years. Therefore, pulp molded products have attracted market attention. However, traditional pulp molded products are prone to powder shedding under normal use conditions. The powder shedding refers to the phenomenon of fiber detachment and discoloration of pulp molding, which limits its use in high-end products (such as displays, me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21J1/00D21H17/37
Inventor 袁志庆
Owner 广东省汇林包装科技集团有限公司
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