PET film (polyethylene terephthalate film) is a commonly used plastic film material with excellent physical properties and chemical stability. There are various processes to choose from, among which the coating process is the most common production method. This article will make a comparison of three different PET Film production processes, coating, extruding, and stretching process.

Production Process Production Efficiency Uniformity                            of Film Thickness
Coating Process   (a method of uniformly coating liquid polymer onto a substrate through a mold or a drum, and then solidifying it into a film through processes such as drying and cooling) Relatively Simple
The liquid polymer only needs to be evenly coated onto the substrate and then solidified into a film through processes such as drying and cooling.		 Relatively Simple        In the production process, the liquid polymer must be evenly coated onto the substrate and then solidified into a film through processes such as drying and cooling.

 

 Good, relatively stable
Extruding Process
(a method of extruding the melted polymer into a film through a mold or an extrusion head using an extruder)		 Relatively Complex    It requires the melted polymer to be uniformly extruded through an extruder and undergo processes such as cooling and stretching to form a film.  

Higher Production Efficiency                    The extrusion speed is fast, and it can achieve large-scale production.

 

  

Poor
Stretching Process

(A method of heating the pre-prepared film at a certain temperature, and then forming it through processes such as stretching and cooling)

 Relatively Complex   It requires heating and stretching the pre-prepared film to obtain the desired film properties. Lower
It requires multiple steps of processing, so the production cycle is longer.		  

Good

With the above comparison, the factories can choose the most suitable PET  Film Production Processes.

Hubei Decon can supply polymer for the Extruding Process. For more information, you can click https://www.polyestermfg.com/film-grade-pet-chip/.