Manufacturing method of dyed PET film

Abstract

The invention discloses a manufacturing method of a dyed PET film and relates to the technical field of manufacturing of PET films. The manufacturing method of the dyed PET film comprises the specificsteps that firstly, uncoiling, wherein a PET film coil material is uncoiled through a coil material uncoiling machine, and the PET film coil material is an extrusion-formed transparent PET film coilmaterial; secondly, coloring, wherein pigment is applied on the surface of the uncoiled PET film coil material through a rolling coating machine, wherein the rolling coating machine is a double-rolleropposite-rolling coating machine, and the surfaces of rolling rollers are provided with customizable patterns; and thirdly, primary drying, wherein the colored surface of the PET film coil material is dried through a drying machine. The manufacturing method of the dyed PET film solves the problems that by the adoption of an existing PET film manufacturing method which mixes raw materials with dyeand then conducts formation machining, a formed PET film product has a single color, after the film is formed, color aberration exists, the color is difficult to control, the attractiveness is poor,and the marketing and sales prospect is influenced.

Description

technical field [0001] The invention relates to the technical field of manufacturing a dyed PET film, in particular to a method for manufacturing a dyed PET film. Background technique [0002] PET film is a kind of packaging film with relatively comprehensive performance. It has good transparency, luster, good air tightness and fragrance retention, moderate moisture resistance, and lower moisture permeability at low temperature. PET film has excellent mechanical properties. Its toughness is the best among all thermoplastics, and its tensile strength and impact strength are much higher than ordinary films; it has good stiffness and stable size, and is suitable for secondary processing such as printing and paper bags. PET film also has excellent Heat resistance, cold resistance and good chemical resistance and oil resistance, but it is not resistant to strong alkali, easy to be charged with static electricity, and there is no appropriate anti-static method, so attention should...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the present invention provides a manufacturing method of dyed PET film, which solves the problem that the method of existing PET film is to mix raw materials and dyes, and then carry out molding processing, and the color of the formed PET film product is single, Moreover, the color of the film has chromatic aberration, which is difficult to control and has poor aesthetics, which affects the market sales prospect.