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Preparation method of ultra-light anti-adhesion release film
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A release film and anti-adhesion technology, which is applied in papermaking, coating, paper coating, etc., can solve the problems of being unable to meet customers' requirements for ultra-light release film, failing to meet ultra-light requirements, and film surface sticking, etc. Achieve pressure balance, improve drying efficiency, and smooth the film surface
Active Publication Date: 2019-07-19
江阴华美光电科技有限公司
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Problems solved by technology
The main problem of ordinary PET release film is that the peeling force is above 10g, which cannot meet the ultra-light requirement. If the peeling force is below 5g, the film will stick to the surface, which cannot meet the customer's requirements for ultra-light release film. membrane requirements
Several major technical problems that need to be solved for ultra-light anti-adhesion release film are: 1. Stability of peeling force: range of release force; Obvious rainbow pattern; 3. Problems such as stickiness of the film surface
Method used
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Embodiment 1
[0033] Step 1. The first coating process
[0034] 1. Coating configuration: Mix 3 parts of D120 solvent oil, 3 parts of D30 solvent oil, 4 parts of butanone and 1 part of isopropanol as solvent, add 1 part of 7458 silicone oil main agent, 0.1 part of 7672 crosslinking agent, 297 anchoring agent 0.02 parts and 0.05 parts of 4000 catalysts, stirred at 1200 rpm for 30 minutes, filtered through a 200-mesh filter, and used within 3 hours;
[0035] 2. Original film treatment: the corona value is greater than 50 during corona treatment, and the gap between any two points is guaranteed not to exceed 5; thereby enhancing the adhesion of the film surface; dust removal treatment uses a double-sided dust removal device to effectively reduce the original film Floating dust on the surface greatly improves the cleanliness of the product;
[0036] 3. Precise coating: apply the configured coating on the surface of the original film through the coating machine, the coating method is reverse co...
Embodiment 2
[0048] Step 1, the first coating process
[0049] 1. Coating configuration: Mix 4 parts of D120 solvent oil, 4 parts of D30 solvent oil, 5 parts of butanone and 1.5 parts of isopropanol as solvent, add 1.2 parts of 7458 silicone oil main agent, 0.2 parts of 7672 crosslinking agent, 297 anchoring agent 0.03 parts and 0.06 parts of 4000 catalysts, stirred at 1300 rpm for 40 minutes, filtered through a 230-mesh filter, and used within 3.5 hours;
[0050] 2. Original film treatment: the corona value is greater than 50 during corona treatment, and the gap between any two points is guaranteed not to exceed 5; thereby enhancing the adhesion of the film surface; dust removal treatment uses a double-sided dust removal device to effectively reduce the original film Floating dust on the surface greatly improves the cleanliness of the product;
[0051] 3. Precise coating: apply the configured coating on the surface of the original film through the coating machine, the coating method is r...
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Abstract
The present invention discloses an ultra-light anti-adhesion release film preparation method, which comprises: 1, mixing 3-4 parts of D120 solvent oil, 3-4 parts of D30 solvent oil, 4-5 parts of butanone, and 1-1.5 parts of isopropanol to obtain a mixture as a solvent, adding 1-1.2 parts of a 7458 silicone oil main agent, 0.1-0.2 part of a 7672 cross-linking agent, 0.02-0.03 part of a 297 anchoring agent, and 0.05-0.06 part of a 4000 catalyst, stirring for 30-40 min at a speed of 1200-1300 rotation / min, filtering with a 200-230 mesh filtration screen, using within 3-3.5 h, carrying out raw film treatment, precisely coating, carrying out drying curing, and carrying out material receiving winding; 2, mixing 2-2.5 parts of D120 solvent oil, 2-2.5 parts of D30 solvent oil, 2.5-3 parts of butanone and 0.8-1.2 parts of isopropanol to obtain a mixture as a solvent, adding 0.8-1 part of a 9106 silicone oil main agent, 0.1-0.2 part of a 7672 cross-linking agent, 0.02-0.03 part of a 297 anchoring agent, and 0.06 part of a 4000 catalyst, stirring for 30-40 min at a speed of 1200-1300 rotation / min, filtering with a 200-230 mesh filtration screen, using within 3-3.5 h, carrying out raw film treatment, precisely coating, carrying out drying curing, and carrying out material receiving winding; and 3, carrying out post-curing treatment. According to the present invention, the produced release film has the light transmittance of more than 88%, has the mist degree of less than 3, and has the peel force stability (normal temperature) of 3-5 g.
Description
technical field [0001] The invention relates to the technical field of film coating, in particular to a preparation method of an ultra-light anti-adhesion release film. Background technique [0002] Release paper, also known as release paper and anti-adhesive paper, is mainly used to stick the adhesive layer on the surface of the tape to protect the surface of the tape. Existing release paper is generally coated with a film layer (the material used mainly contains polyethylene) on the surface of the bottom paper layer of the release paper, and then coated with a layer of release agent coating on the surface of the film layer. (The material used is mainly silicone oil) to form a release film to obtain a release paper. The main problem of ordinary PET release film is that the peeling force is above 10g, which cannot meet the ultra-light requirement. If the peeling force is below 5g, the film will stick to the surface, which cannot meet the customer's requirements for ultra-li...
Claims
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Application Information
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