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Water-based mold release agent for thermoprinting and preparation method thereof

A water-based release and active agent technology, used in coatings, wax coatings, etc., can solve the problems of incomplete melting after reheating, failure to meet inspection standards, low volatility of organic solvents, low cost, fast drying speed, Simple preparation method

Inactive Publication Date: 2016-11-09
WUHAN HUAGONG IMAGE TECH & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese Patent Publication (Announcement) No.: CN 104695278 A discloses a hot stamping release agent and its preparation method and application. Although the hot stamping release agent has good release force and cutting clarity, the adhesiveness Good and easy to peel off, low cost and easy to produce in large quantities, but this hot stamping release agent is a solvent-type release agent, and its solvent is an organic solvent such as toluene, xylene, butanone, and the organic solvent has low volatility. The residual amount is large, which cannot meet the national inspection standards, and a large amount of organic solvents will be discharged during the production process, which is easy to cause pollution to the environment
Chinese Patent Publication (Announcement) No.: CN 103254706 A discloses a water-based release agent and its preparation method. The water-based release agent uses deionized water as a solvent, and has the characteristics of environmental protection, pollution, good leveling, and stretchability. Good, uniform film formation, fast drying speed and good peelability, etc. However, due to the sufficient and complete internal crosslinking of the modified water-based acrylic resin and the crosslinking agent, the network structure is formed after curing, resulting in reheating It cannot be completely melted, so this water-based release agent cannot be used as a water-based release agent for hot stamping

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Paraffin 20 parts

[0021] Polysorbate with Tween 80 3.5 parts

[0022] Span 80 fatty acid sorbitan 3.5 parts

[0023] 1 part stearic acid

[0024] 55 parts of deionized water

[0025] Sodium carboxymethyl cellulose 0.3 parts

[0026] The preparation method step of the hot stamping water-based release agent of above-mentioned formula is:

[0027] Mix 20 parts by mass of paraffin, 3.5 parts of polysorbate of Tween 80, 3.5 parts of Span 80 and 1 part of stearic acid into the reaction vessel, turn on the equipment and heat to 75°C, let the paraffin In a molten state, then start stirring to fully mix the paraffin wax and the compound non-ionic surfactant. At this time, control the stirring speed to 500~600 rpm;

[0028] Add a certain amount of deionized water that has been heated to the same temperature and stir. At this time, the stirring speed is controlled at 1000~1200 rpm, and the temperature is maintained at 80°C. After reacting for 20~30 minutes, add 0.3 parts by...

Embodiment 2

[0031] Paraffin 30 parts

[0032] Polysorbate with Tween 60 5 parts

[0033] Span 60 fatty acid sorbitan 5 servings

[0034] 1 part stearic acid

[0035] 70 parts of deionized water

[0036] Sodium carboxymethyl cellulose 0.7 parts

[0037] The preparation method step of the hot stamping water-based release agent of above-mentioned formula is:

[0038] The mass parts are respectively 30 parts of paraffin wax, 5 parts of Tween 60 polysorbate, 5 parts of Span 60 fatty acid sorbitan and 1 part of stearic acid are mixed into the reaction vessel, and the equipment is turned on and heated to 75 ℃, let the paraffin wax be in a molten state, then start stirring, so that the paraffin wax and the compound nonionic surfactant are fully mixed evenly, and the stirring speed is controlled at 500~600 rpm;

[0039] Add a certain amount of deionized water that has been heated to the same temperature and stir. At this time, the stirring speed is controlled at 1000~1200 rpm, and the tempera...

Embodiment 3

[0042] Microcrystalline wax 20 parts

[0043] Polysorbate with Tween 80 3.5 parts

[0044] Span 80 fatty acid sorbitan 3.5 parts

[0045] 1 part stearic acid

[0046] 60 parts deionized water

[0047] Sodium carboxymethyl cellulose 0.3 parts

[0048] The preparation method step of the hot stamping water-based release agent of above-mentioned formula is:

[0049] Mix 20 parts by mass of microcrystalline wax, 3.5 parts of polysorbate of Tween 80, 3.5 parts of Span 80 and 1 part of stearic acid into a reaction vessel, turn on the equipment and heat to 85°C, Let the microcrystalline wax be in a molten state, then start stirring to fully mix the microcrystalline wax and the compound nonionic surfactant, and control the stirring speed at 500~600 rpm;

[0050] Add a certain amount of deionized water that has been heated to the same temperature and stir. At this time, control the stirring speed at 1000~1200 rpm, maintain the temperature at 90°C, and react for 20~30 minutes. Add 0...

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PUM

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Abstract

The invention discloses a water-based mold release agent for thermoprinting and a preparation method thereof, and belongs to the technical field of preparation of mold release agents. The water-based mold release agent for thermoprinting consists of the following components: wax, a composite nonionic surfactant, water and a thickener. The wax is used as a main body, and through control of the amounts of the wax, the composite nonionic surfactant, the thickener and the water, the prepared water-based mold release agent for thermoprinting has relatively good mold release property and slitting property, and has the advantages of good coating and leveling property, uniform film formation and fast drying speed, can be completely melted at high temperature to achieve stripping, can be applied to coating of holographic anti-counterfeiting thermoprinting films. The preparation method is simple, environmentally friendly and low in cost, and can be applied for mass production.

Description

technical field [0001] The invention relates to a hot stamping water-based release agent and a preparation method thereof, belonging to the technical field of release agent preparation. Background technique [0002] In the multi-layer structure of the holographic anti-counterfeiting hot stamping film, the release layer coated with the release agent has a crucial influence on the hot stamping performance. At present, most of the common release agents used in hot stamping are water-insoluble release agents, and organic solutions are used as solvents. Chinese Patent Publication (Announcement) No.: CN 104695278 A discloses a hot stamping release agent and its preparation method and application. Although the hot stamping release agent has good release force and cutting clarity, the adhesiveness Good and easy to peel off, low cost and easy to mass production, etc., but this hot stamping release agent is a solvent-type release agent, and its solvent is an organic solvent such as t...

Claims

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Application Information

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IPC IPC(8): C09D191/06C09D7/12
CPCC09D191/06C08L2203/16C08L2205/025C08L2205/035C09D7/63C09D7/65C08L71/02C08L1/286C08K5/09
Inventor 潘晨杨兴国鲁琴
Owner WUHAN HUAGONG IMAGE TECH & DEV