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Method of manufacturing release film

A production method and release film technology, applied in the direction of layered products, etc., can solve the problems of reducing the qualified rate, increasing the production cost, and high cost, and achieving the effects of uniform material thickness, convenient process, and improved processing rate.

Inactive Publication Date: 2006-10-04
林启祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when using the tearable adhesive tape with this type of release paper in the clean room, the fiber debris produced by the release paper will not only increase the chance of product contamination, lead to a reduction in the pass rate in the product manufacturing process, but also It will increase the maintenance burden of the clean room and increase the production cost
In addition, for the application of release paper, the cost of obtaining paper is relatively high in areas where forest resources are not abundant. Since the composition of paper contains a very high content of various organic and inorganic additives, it is necessary to combine various organic and inorganic additives during recycling. Inorganic additives are separated from the release paper, which requires higher costs
Furthermore, in practical applications, in order to avoid the deformation of the release paper due to the influence of ambient temperature and humidity, plastic coating is often carried out on one or both sides of the release paper base film to make a release paper with good weather resistance. Type paper, for example, use a molten polyethylene T-type extruder to process molten polyethylene (PE) coating and back cover on one or both surfaces of the release paper base film. The disadvantage is that the surface is plastic coating. The release paper is not easy to be separated and recycled after being discarded, and can only be disposed of by burning

Method used

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  • Method of manufacturing release film
  • Method of manufacturing release film
  • Method of manufacturing release film

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0092] Use KBOPP / AC / PE coating and KPET / AC / PE coating as two release film substrates, and use Shin-Etsu's solvent-based silicone release agent KS-3703 / KS-3800 Toluene is used as a solvent, and after mixing in a ratio of 3:1, 2% CAT-PL-50T platinum catalyst is added, and the prepared release agent toluene solution is coated on the above-mentioned release film substrate with a No. 8 wire rod PE coating surface, KBOPP and KPET surface, the coating surface is corona treatment surface, and dry in a hot air circulation oven at 100°C for 1 minute as the curing and drying condition of the release agent, the coating amount of Silicone is 0.8 g / m2 , placed in an environment with a relative humidity of 60% and a temperature of 25°C for one day, stick a one-inch-wide Tesa7475 tape on the release agent coated surface, and use double-sided tape to seal the non-release agent of the release film The coated surface is pasted on the stainless steel sheet, and rolled twice with a 2 kg rubber whe...

no. 2 example

[0099] Take KBOPP / AC / PE coating and KPET / AC / PE coating two release film substrates, use Shin-Etsu's low-temperature bridging solvent-type silicone release agent solution, KS -847T as the main agent, toluene as the solvent, after mixing, add 2% CAT-PL-50T platinum catalyst, and use No. PE coating surface, KBOPP and KPET surface, the coating surface is corona treatment surface, and the release agent is cured and dried in a hot air circulation oven at 90°C for 1 minute. The coating amount of Silicone is 0.7 g / m2. After being placed in an environment with a relative humidity of 60% and a temperature of 25°C for one day, stick a one-inch-wide Tesa7475 tape on the release agent coated surface, and use the double-sided tape to coat the non-release agent of the release film. The cloth surface is pasted on the stainless steel sheet, and the rubber wheel with a weight of 2 kg is rolled back and forth twice, and then the peeling force is measured after 0, 1 and 7 days under the pressure ...

no. 3 example

[0106] Take KBOPP / AC / PE coating and KPET / AC / PE coating two release film substrates, with weight percent as 1% polyvinyl octadecyl carbamate (Polyvinyl Octadecyl Carbamate, one party company oil industry Co., Ltd. Co., Ltd. Peeloil 1010) non-silicon Likang off-toluene solution, coated with 0.07 g / m2 by 150-mesh gravure printing, coated on the PE coating surface, KBOPP and KPET surface of the above-mentioned release film substrate, the coated surface is Corona-treated surface, and dried in a hot air circulation oven at 100°C for 1 minute, placed in an environment with a relative humidity of 60% and a temperature of 25°C for one day, tested the tape and WQ4012 rubber with a one-inch-wide Tesa7475 acrylic tape The tape is pasted on the release agent coated surface of each release film. According to the PSTC-6 test method, use a universal tensile testing machine at a peeling angle of 180°, and peel off at 0.3 m / min and 50 m / min respectively. Speed ​​pull test the release force of t...

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PUM

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Abstract

The invention discloses a parting film preparing method, which is characterized by the following: using one kind or at least one inlay of pressed plastic material for base material; coating parting agent on base material film with surface applying technique to get lacerative parting film on at least one side; keeping the design of tearing without burr and chip.

Description

technical field [0001] The invention relates to a production method of a release film, in particular to a self-adhesive label, an adhesive layer on one side of a sticker, or a combination of the adhesive layer on the front and back sides of a double-sided tape, which is used in conjunction with temporary protection of the adhesive surface before pasting. Excellent release film, which has good tearing properties in use, and will not produce burrs and debris on the tearing edge. Background technique [0002] At present, all kinds of tapes, labels or stickers (adhesive tapes, labels or stickers) generally used are often combined with a release liner that temporarily protects its adhesive surface, such as release paper. ) or release film (release film), so that the adhesive surface will not be polluted and lose its adhesiveness before it is attached to the adhered object. At least one surface of the release substrate is coated with a release agent to provide a lower surface ene...

Claims

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Application Information

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IPC IPC(8): B32B7/10
Inventor 林启祥
Owner 林启祥
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