Release film compounding equipment and release film compounding production line

Abstract

The invention discloses release film compounding equipment and a release film compounding production line. The release film compounding equipment comprises a rack; a first unwinding device, a second unwinding device, an infrared preheating roller, a high-temperature water preheating roller, a composite roller device, a heat supply system, a cooling roller, a third flattening roller, an edge cutting mechanism and a winding device are arranged on the rack; a thin film on the first unwinding device is preheated through an infrared preheating roller, a base film on the second unwinding device is preheated through a high-temperature water preheating roller, the preheated thin film and the base film are composited through the composite roller device to obtain a composite film, and the composite film bypasses the cooling roller and the third flattening roller, is subjected to edge cutting through an edge cutting mechanism and then is fed into the winding device to be wound. Aiming at the characteristics of the polyester composite release film, the production requirements of the novel polyester composite release film can be met, the release effect of the polyester composite release film is ensured, and meanwhile, the large-scale production of the novel composite release film is realized.

Description

technical field [0001] The invention relates to a release film production equipment, in particular to a release film composite equipment and a release film composite production line. Background technique [0002] The release film refers to the film whose surface can be distinguished. The release film is not sticky or slightly sticky after contacting with a specific material under limited conditions. The main functions are isolation, filling, protection, Excellent properties such as easy peeling; [0003] Polyester release film (PET release film) is a commonly used release film. The substrate is PET film. During the preparation process, the substrate usually needs to be surface treated, such as coating silicon release agent, fluorine Plain release agent or plasma treatment, etc., so that it has extremely light and stable release force for different organic pressure-sensitive adhesives; The adhesive force is generally too small, and it is easy to peel off, resulting in poor ...

AI Technical Summary

Problems solved by technology

[0003] Polyester release film (PET release film) is a commonly used release film. The substrate is PET film. During the preparation process, the substrate usually needs to be surface treated, such as coating silicon release agent, fluorine Plain release agent or plasma treatment, etc., so that it has extremely light and stable release force for different organic pressure-sensitive adhesives; The adhesive force is generally too small, and it is easy to peel off, resulting in poor release effect of the PET release film, short service life, and easy peeling of the coating. In addition, due to the poor high temperature resistance of the release agent, it often affects the viscosity of the release film. In addition, the use temperature of PET release film can only be up to 100°C. If the temperature exceeds this temperature, the material will soften, resulting in the PET release film not being able to function in some high temperature environments, and its use is limited.

[0004] Based on this, we have developed a new polyester composite release film. Through pretreatment, the surface of PET film and PTFE microporous film has a high surface energy, and then quickly compounded with a composite roller to obtain a better release effect. And high temperature resistant polyester composite release film; however, due to the high restrictions on the composite temperature, composite pressure and other conditions during the composite process of the new polyester composite release film, the current film composite equipment on the market is mainly multi- Layer co-extrusion equipment, ordinary hot-pressing compound equipment and hot-melt adhesive-type hot-pressing compound equipment; among them, multi-layer co-extrusion equipment uses screw extruder and multi-layer co-extrusion die to directly produce multi-layer composite materials, such as Release film, etc. However, this kind of equipment is mainly suitable for polymer materials with excellent thermal melting and fluidity. The parameters of the equipment die head are complex, debugging is difficult, and the thickness of the final multi-layer composite material is difficult to control uniformly; ordinary hot-pressing composite equipment It uses a pair of hot rollers to superimpose and unwind the multi-layer materials, and heat-press the hot rollers to directly compound them. The temperature of this kind of hot rollers is generally within 200°C. This equipment is only suitable for products with low hot-melt temperatures, and Composite fastness is difficult to control, so it is not suitable for the production of new polyester composite release film; Then through a pair of hot pressing rollers, the equipment will increase the thickness and quality of the composite material, as well as the uniformity

The same difficulty is applicable to the production of new polyester composite release film

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