PET sheets provide a convenient way of packaging product across a number of industries – consumer products, pharmaceuticals, food & beverages, etc. PET sheets are increasingly getting popular as a preferred option for packaging of food and pharma products, due to their visual appeal, their ability to keep the product safe from moisture and easy thermoform-ability.
The table below depicts various types and forms of packaging made out of PET sheets:
Types of PET Sheets
Various PET sheets, based on their properties, are used in different applications. For example, CPET which has a very high working heat resistance (can withstand a temperature of up to 220 degree Celsius for more than 25 minutes) is used for microwaveable containers. The table below depicts the application of various types of PET Sheets.
PET sheet market is currently small, comprising just 1.5% of PET resin consumption in India. However, this market is rapidly growing and the resin consumed by PET sheet industry has nearly doubled from 6,400 tonnes/year in FY-14 to 11,150 tonnes/ year in the FY 17.
Presently most of the PET sheet is manufactured by companies that make different kinds of packaging material. Two of the Hyderabad based players include Nirmala Pet A Pack Pvt Ltd and Spear Pet Pvt Ltd.
The process of PET sheet making broadly involves: Raw material pre-treatment, Extrusion and Drying & Winding/ Cutting the finished sheet
Fig1: Process flow
Sometimes, the final product requires one more layer of PET or coatings, in such cases a co extruder will be required.
Single Versus Double Screw Extrusion
Screw is the most important part of any extruder. The screw is divided into three equal zones; feeding, transition, and metering. The primary functions of the three zones are:
- Feed – taking in the resins and feeding it forward in the screw
- Transition – compressing and melting the resin
- Metering/ Pumping– homogenizing/ blending the melted resins and pumping out through the extruder at a constant rate.
There are mainly two types of extruders; Single screw and Twin screw.The single screw extruders typically cost less than twin screw, however they offer less operational flexibility.
The overall budget for starting a PET sheet extrusion unit with a minimum viable capacity i.e. 300 KG/hr would be Rs. 5 Crores. The machinery cost of twin screw and single screw alone would approximately be Rs. 3 Crores and Rs. 2 Crores respectively.
How Can We Help You?
If you are interested in setting up a PET sheet manufacturing unit, we can assist you in starting a processing unit. Our services include
- Market & Financial viability assessment
- Technical consultancy
- Detailed project report preparation
- Support in project execution
Call us @ 800 888 4932,
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Source: PRESENTATION OF RELIANCE INDUSTRIES LTD. – March1,2016
 Source: Based on discussion with extrusion machinery suppliers