PTI Online Academy Collection

Learn part four of the materials series on the importance of developing strain-hardened crystals during blow molding to produce bottles with optimum properties.

This module describes the basic approach to designing preforms for PET bottles.

This is the first of a four part series. This session will give even a non-technical attendee the foundation needed to understand the uniqueness of PET and how its properties can be altered. It reviews polymer definitions, explains commonly used terminologies, and introduces how polymers are produced. The critical concept of amorphous and crystalline materials are explained in context with how this governs a polymer’s properties. The session concludes with a description of thermal properties and how these are important to the blow molding of PET.

Learn part two of the materials series reviews of current suppliers and how PET is used to make not just bottles but fibers, filaments and sheet goods.

Grasp an overview of recycling methods used to reclaim PET and considerations for introducing rPET into new packages

In this session, PET material handling and drying will be covered. In the material handling portion, the different ways to receive and transfer material will be covered. Aggressive material handling can lead to problems such as fines and angel hair. The source of these and the equipment used to remove them is discussed in this session.

Learn part three of the materials series on the attributes of bottle grade PET materials and how properties can be altered.

This module describes the basic approach to designing containers.

Learn how to reheat a preform before blowing it into a bottle and how to reduce variation between blown bottles

This section will cover blow molding fundamentals, controls, and processing. The main goal of this session will be to provide an understanding of the blow molding variables and their relationships and gain an understanding of the machine operation and how making changes can affect the quality of the bottles. Some of the solutions to these quality concerns are also covered in this session.

Many barrier solutions are commercially available for plastic bottles through passive and active barrier blends, multilayer, and coating technologies. Understanding and selecting the best option for a given product’s shelf life needs is paramount to commercial success.