Silicon coated release film

A release film, silicon release agent technology, applied in the direction of coating, can solve the problems of difficult coloring, low color fastness, low peeling force of the release agent layer, etc., to achieve easy coloring, high color fastness, The effect of improving bond strength

Active Publication Date: 2019-03-05
天津市利好卫生材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When making a sanitary napkin coating, it is necessary to print on the surface of the release film, but since the release agent layer must have a relatively low peeling force, the flower-shaped patterns of various dyes are directly printed on the release agent. When the layer is on, the coloring is not easy, and the color fastness is not high

Method used

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  • Silicon coated release film
  • Silicon coated release film
  • Silicon coated release film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1A

[0027] Embodiment 1A: The organosilicon release agent is prepared by the following method:

[0028] Step 1: Mix 25Kg of silicone prepolymer, 17Kg of acrylic acid, 8Kg of tert-butyl allyl formate, 6Kg of pseudolimonene and 60Kg of toluene, and add 5Kg of toluene and 0.9 The mixed solution of the dibenzoyl peroxide of Kg, insulation reaction 1 hour;

[0029] Step 2: Heat up to 88°C, add dropwise 25Kg of acrylic acid, 12Kg of tert-butyl allyl formate, 12Kg of pseudolimonene, 2.5Kg of E-44 epoxy resin, and 1.1Kg of dibenzoyl peroxide With the mixed solution of the toluene of 35Kg, the control rate of addition makes mixed solution dropwise in 3 hours,

[0030] Step 3: heat up to 97°C and keep warm for reaction;

[0031] Step 4: After the reaction is completed, remove the toluene in the reaction solution in Step 3 to obtain a crude product, place the crude product in an extraction device, extract with ethanol for 70 hours, and dry to obtain a silicone release agent.

[0032] Wher...

Embodiment 2A

[0035] Embodiment 2A: The organosilicon release agent is prepared by the following method:

[0036] Step 1: Mix 27Kg of silicone prepolymer, 20Kg of acrylic acid, 6Kg of tert-butyl allyl formate, 5Kg of pseudolimonene and 70Kg of toluene, and add 8Kg of toluene and 0.8 The mixed solution of the dibenzoyl peroxide of Kg, insulation reaction 1.5 hours;

[0037] Step 2: heat up to 90°C, add dropwise 20Kg of acrylic acid, 15Kg of tert-butyl allyl formate, 10Kg of pseudolimonene, 3Kg of E-44 type epoxy resin, 1.2Kg of dibenzoyl peroxide and The mixed solution of the toluene of 30Kg, control rate of addition makes mixed solution dropwise in 3 hours,

[0038] Step 3: heat up to 95°C and keep warm for reaction;

[0039] Step 4: After the reaction is completed, remove the toluene in the reaction solution in Step 3 to obtain a crude product, place the crude product in an extraction device, extract with ethanol for 73 hours, and dry to obtain a silicone release agent.

[0040] Among t...

Embodiment 3A

[0043] Embodiment 3A: The organosilicon release agent is prepared by the following method:

[0044] Step 1: Mix 30Kg of silicone prepolymer, 15Kg of acrylic acid, 5Kg of tert-butyl allyl formate, 7Kg of pseudolimonene and 65Kg of toluene, and add 6Kg of toluene and 1Kg of toluene at 80°C The mixed solution of dibenzoyl peroxide was incubated and reacted for 1.3 hours;

[0045] Step 2: Heat up to 92°C, add dropwise 22Kg of acrylic acid, 10Kg of tert-butyl allyl formate, 15Kg of pseudolimonene, 2Kg of E-44 epoxy resin, 1Kg of dibenzoyl peroxide and 40Kg The mixed solution of the toluene, control the rate of addition to make the mixed solution dropwise in 3 hours,

[0046] Step 3: heat up to 93°C and keep warm for reaction;

[0047] Step 4: After the reaction is completed, remove the toluene in the reaction solution in Step 3 to obtain a crude product, place the crude product in an extraction device, extract with ethanol for 75 hours, and dry to obtain a silicone release agent....

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Abstract

The invention relates to a silicon coated release film. Main points of the technical scheme are that: the release film includes a polyethylene film and a release agent layer applied to one side surface of the polyethylene film; the release agent layer is formed by curing of a mixture containing a silicone release agent, a first solvent and a curing agent that are applied to the polyethylene film;and the weight ratio of the silicone release agent, the first solvent and the curing agent is 50-60:20-30:0.1-1. The release film not only has the advantages of high surface tension bottom peeling force, but also has the advantages of easy coloring and high color fastness when flower patterns of various dyes are directly printed on the release agent layer.

Description

technical field [0001] The invention relates to a release film, more specifically, it relates to a silicon-coated release film. Background technique [0002] The release film refers to a film with a separable surface. The release film is not sticky or slightly sticky after contacting with a specific material under limited conditions. The release film can be divided into BOPET release film, BOPP release film, PE release film, other organic material release film and special purpose release film according to the selected base material. Among them, PE release film is the most widely used polymer material in the world today. It is polymerized from ethylene and can be made into a sanitary napkin coating. [0003] When making a sanitary napkin coating, it is necessary to print on the surface of the release film, but since the release agent layer must have a relatively low peeling force, the flower-shaped patterns of various dyes are directly printed on the release agent. When lay...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C08L23/06C09D151/08C08F283/12C08F220/06C08F218/12C08F236/20
CPCC08F283/124C08J2323/06C08J2451/08C09D151/08C08J7/0427C08F220/06
Inventor 张强
Owner 天津市利好卫生材料有限公司
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