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Preparation method of thin high-definition pre-coating base film

A base film, clear technology, applied in the field of preparation of thin high-definition pre-coated base film, can solve the problem of service life reduction

Pending Publication Date: 2021-07-09
SHANDONG SNTON OPTICAL MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing a thin high-definition pre-coated base film, which solves the technical problem that the overall service life of the pre-coated film is reduced due to bubbles or demoulding on the surface during use

Method used

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  • Preparation method of thin high-definition pre-coating base film
  • Preparation method of thin high-definition pre-coating base film
  • Preparation method of thin high-definition pre-coating base film

Examples

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preparation example Construction

[0031] see Figure 1-2 As shown, a preparation method of a thin high-definition precoated base film is provided in this embodiment, comprising the following steps: Step 1, extruder: when the extruder extrudes the melt, maintain the pressure of the extruded melt Uniform and stable;

[0032] Step 2. The extruded melt is subjected to coarse filtration and fine filtration of the melt to remove excessively degraded products and entrained air bubbles, unmelted materials or coke and other foreign matter in the melt;

[0033] Step 3. The melt after the coarse filtration of the melt enters the metering device. The metering device includes a high-precision gear metering pump to measure the amount of the melt discharged. Specifically, the metering device is located in the coarse filter of the melt and the fine filter of the melt. between,;

[0034] Step 4, pour the above-mentioned treated melt into a static mixing device, so that the static mixing device is used for secondary fusion of...

Embodiment 1

[0054] Base film light transmittance and haze test

[0055] In this experiment, the WGT-S light transmittance / haze tester is used to cut the polyester base film with coating material into a square film of 50mm×50mm, and directly test it on the light transmittance / haze tester , to compare the light transmittance and haze change of the base film before and after coating.

Embodiment 2

[0057] Experimental test of shrinkage rate of heat shrinkable base film

[0058] The state adjustment of the sample should be carried out according to the provisions of GB / T2918-1998, the humidity is (23±2) ℃, the adjustment time is not less than 0.5h, and the test is carried out under this condition.

[0059] Experimental Equipment and Experimental Methods

[0060] Experimental equipment: SDH001FA low temperature constant temperature and humidity test box, frame, steel ruler, blade, used to hold liquid heat transfer medium, the volume should meet the test requirements.

[0061] Liquid heat transfer medium: choose heat transfer oil as the heat transfer medium, based on the principle that it has no effect on the sample.

[0062] Frame: Two frames embedded with metal mesh, the outer dimension of the metal mesh is more than 10mm larger than the sample.

[0063] The distance between the two metal meshes is 1mm-3mm, which should not affect the free shrinkage of the sample.

[00...

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Abstract

The invention discloses a preparation method of a thin high-definition pre-coating base film, and relates to the technical field of preparation of thin high-definition pre-coating base films. The preparation method comprises the following steps that step 1, extruding is carried out by using an extruder, when the extruder extrudes a melt, the pressure of the extruded melt is kept uniform and stable; and step 2, the extruded melt is subjected to melt coarse filtration and melt fine filtration, and excessive degraded products and carried foreign matter such as bubbles, unmelted materials or coke materials in the melt are filtered out. A T-shaped die head capable of automatically adjusting a flexible die lip is adopted as a die head, a computer is used for controlling the thickness, a thickness measuring signal is fed back to a thermal expansion bolt, the thermal expansion bolt is automatically heated or cooled, the thickness of the thick sheet is uniform, the thickness tolerance is smaller than or equal to 3%, all driving and process parameters are adopted for automatic control in the whole line, and the electric transmission control precision is smaller than 1%.

Description

technical field [0001] The invention belongs to the technical field of polyester protective film production for screen display equipment, and in particular relates to a preparation method of a thin high-definition precoated base film. Background technique [0002] This product is mainly used in the protection of screen display devices. With the development of big data in the 5G era, some communication devices have also undergone earth-shaking changes. For the enterprise, this is helpful for the aggregation and sharing of enterprise data, reducing the Data is collected, processed and stored repeatedly, reducing costs. As far as the industry ecology is concerned, creating an open and shared big data application ecological environment is conducive to the external realization of big data and the ability of industrial cooperation, so that data can generate greater value. It can be seen from the 5G industry chain that with the advent of 5G, basic hardware facilities and terminal ...

Claims

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Application Information

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IPC IPC(8): B29C48/08B29C48/31B29C48/305B29C48/87B29C48/92C08L67/02C08L63/00C08L79/08C08L77/00C08K3/22C08K3/34C08J5/18
CPCB29C48/08B29C48/313B29C48/307B29C48/87B29C48/92C08J5/18B29C2948/92647B29C2948/92704B29C2948/92514B29C2948/92904B29C2948/92942C08J2367/02C08J2363/00C08J2379/08C08J2377/00C08K3/22C08K3/34
Inventor 孙艳斌李彬彬刘金伟齐宝山吕廷磊姚成法王鹏董相岗张玲张凝
Owner SHANDONG SNTON OPTICAL MATERIALS TECH CO LTD