Water-based coating liquid for Dupont paper and preparation method of water-based coating liquid

A water-based coating solution and DuPont paper technology, applied in the field of paper printing, can solve the problems of uneven coating, difficult control of coating coating amount, coating breakpoint, etc.

Pending Publication Date: 2021-09-17
HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, DuPont paper is light and thin and has uneven fibers, which makes it difficult to control the amount of coating on DuPont paper, and problems such as uneven coating and coating breakpoints are prone to occur, which seriously affects the printing effect of DuPont paper; and DuPont paper itself. The waterproof effect is average, and it cannot achieve the effect of soaking in water and rubbing without affecting the printing effect

Method used

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  • Water-based coating liquid for Dupont paper and preparation method of water-based coating liquid
  • Water-based coating liquid for Dupont paper and preparation method of water-based coating liquid
  • Water-based coating liquid for Dupont paper and preparation method of water-based coating liquid

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preparation example Construction

[0026] The application also provides a preparation method for the above-mentioned aqueous coating liquid, comprising the following steps:

[0027] A) mixing 8-15 parts by weight of deionized water and 8-15 parts by weight of ethanol to obtain an ethanol dilution;

[0028] B) The deionized water of remaining parts by weight, the ethylene-acrylic acid copolymer of 15~30 parts by weight, the polyurethane resin of 8~15 parts by weight, the silicon dioxide of 2~5 parts by weight, the nano fiber of 0.01~0.06 parts by weight The element is mixed with 0.1-0.4 parts by weight of a synthetic agent to obtain an aqueous coating liquid for Dupont paper.

[0029] More specifically, the preparation method of the coating liquid is:

[0030] Add 8 to 15 parts of deionized water and 8 to 15 parts of ethanol into the reaction kettle, stir at room temperature for 5 to 10 minutes at a stirring speed of 80 to 100 rpm, and obtain an ethanol dilution for use;

[0031] First add the remaining soft w...

Embodiment 1

[0036] Add 8 parts of deionized water and 8 parts of ethanol into the reaction kettle, stir at room temperature for 5 minutes at a stirring speed of 80 rpm, and obtain an ethanol dilution for use;

[0037]First add 58.89 parts of soft water to the reaction kettle, then add 15 parts of ethylene-acrylic acid polymer and 8 parts of polyurethane resin to the reaction kettle, start stirring, stir at a speed of 100r / min for 5min, and add 2 parts of Silica and 0.01 part of nanocellulose were stirred for 1 minute, then 0.1 part of synthetic agent was added, and the stirring was continued for 20 minutes to obtain a water-resistant and ink-absorbent coating solution for DuPont paper.

[0038] The coating solution is coated on the machine, and the dry film thickness of the coating is 2.5 g / m2. The sample is obtained after printing by HP Indigo. After printing, the sample turns white after being soaked in water for 24 hours. The color difference measured by the color difference meter is 1....

Embodiment 2

[0040] Add 12 parts of deionized water and 12 parts of ethanol into the reaction kettle, stir at room temperature for 5 minutes at a stirring speed of 80 rpm, and obtain an ethanol dilution for use;

[0041] First add 36.66 parts of soft water to the reaction kettle, then add 25 parts of ethylene-acrylic acid polymer and 10 parts of polyurethane resin to the reaction kettle, start stirring, stir at a speed of 100r / min for 5min, and add 4 parts of Silica and 0.04 part of nanocellulose were stirred for 1 minute, then 0.3 part of synthetic agent was added, and the stirring was continued for 20 minutes to obtain a water-resistant and ink-absorbent coating solution for DuPont paper.

[0042] The coating solution was coated on the machine, and the dry film thickness of the coating was 2.5 g / m2. The sample was obtained after printing by HP Indigo. After printing, the sample was soaked in water for 72 hours and then turned white. The color difference measured by the color difference me...

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Abstract

The invention provides a water-based coating liquid for Dupont paper. The water-based coating liquid comprises the following raw materials in parts by weight: 15-30 parts of an ethylene-acrylic acid copolymer, 8-15 parts of polyurethane resin, 2-5 parts of silicon dioxide, 0.01-0.06 part of nano-cellulose, 0.1-0.4 part of a synthesis agent, 8-15 parts of ethanol and 55-70 parts of deionized water, summing to 100 parts. The invention also provides a preparation method of the water-base coating liquid for the Dupont paper. The water-based coating liquid provided by the invention is good in water resistance and does not drop ink when being rubbed, the viscosity of the coating liquid is 100-300 Mpa/S, the coating liquid is easy to uniformly coat due to high viscosity, and finally, the effects of good water-resistant effect and good printing adhesive force are achieved.

Description

technical field [0001] The invention relates to the technical field of paper printing, in particular to an aqueous coating liquid for Dupont paper and a preparation method thereof. Background technique [0002] DuPont paper is completely made of high-density polyethylene (HDPE) microfibers through spinning and laying. Its ingredients are pure, non-irritating, uncoated, and do not contain any adhesives and fillers in the middle and brighteners. It has the characteristics of fleece proof, windproof and warm, waterproof, breathable and easy to dry, color-blocking, and soft. [0003] DuPont papers are used in many products such as desiccant packaging, medical packaging, protective clothing, walls, laminated roof insulation, down linings, envelopes, packaging materials, and automotive sheathing. However, DuPont paper is light and thin and has uneven fibers, which makes it difficult to control the amount of coating on DuPont paper, and problems such as uneven coating and coating...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/10D21H19/40D21H19/52D21H21/52D21H19/56D21H19/62D21H19/46D21H21/16
CPCD21H27/10D21H19/40D21H19/52D21H21/52D21H19/56D21H19/62D21H19/46D21H21/16
Inventor 黄宏存朱清梅杨丽娟
Owner HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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