A production process of Teflon film for LCD module binding

Abstract

The invention discloses a producing technology for a teflon thin film for binding a liquid crystal display (LCD) module. The producing technology comprises the following processing steps of mold cleaning, material selecting, dispersing treatment, weighing and feeding, mold compressing and forming, high-temperature sintering, turning and film forming, shaping, physical examining, slitting and winding, rewinding, packaging, appearance inspecting and warehousing; and in the steps, the parameters and conditions of every step are controlled. The producing technology has the beneficial effects that the technology is specifically used for manufacturing in the liquid crystal display industry, the technology is unique, the using field pertinence is high, the technology is in the lead, product quality is stable, thickness tolerance and flatness are good, the high temperature is resisted, the deformation rate is low, specifications are complete, thin films with the thickness of 0.01 mm can be produced, the technology is suitable for binding the liquid crystal module, appearance cleanness is high, static is avoided, production cost is reduced, and production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a production process of a Teflon film used for binding LCD liquid crystal screen modules. Background technique [0002] Teflon (chemical name polytetrafluoroethylene, English abbreviation PTFE) film, collectively referred to as buffer material in the liquid crystal industry, we name it electronic film, hereinafter collectively referred to as Teflon electronic film, the forming process of this Teflon film is PTFE resin powder After crushing, put it evenly into the mold of the corresponding shape and size, and press it under a certain pressure at room temperature (similar to the molding of powder metallurgy) to form a preform, and then put the preform into a high-temperature sintering furnace for a period of time. Time sintering (recrystallization process, sintering temperature at 360 ° C ~ 380 ° C) process, natural cooling into a green body with certain physical and mech...

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Problems solved by technology

Due to the extremely high requirements for Teflon film during the binding process of LCD liquid crystal screen modules, especially for the thickness and thickness tolerance of the film, the high temperature deformation rate, and the appearance cleanliness are very high. At present, most of the Teflon films produced in China Dragon film is basically used in some common fields such as: anti-corrosion, insulation, anti-sticking, temperature resistance and other occasions, in terms of thickness tolerance, flatness and high temperature resistance (temperature around 300 ℃) and appearance cleanliness etc. Can not meet the requirements, occasionally can meet the requirements but unstable, especially the ultra-thin film such as the thickness of 0.01mm basically cannot be produced, the use requirements are not clear, and the thickness uniformity and tolerance cannot be controlled; secondly, the flatness of the film requires high requirements , the surface is required to be flat and not curled, which is difficult to achieve; the high temperature resistance deformation rate is small, and the Teflon film produced by most manufacturers is easy to curl and deform after high temperature, which is not suitable for LCD module binding; the appearance cleanliness is high, Because PTFE's own static electricity is very easy to absorb foreign matter, it has very high requirements for the production environment, and it is difficult for ordinary enterprises to achieve

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