Daily Archives: 18. January 2019

Understand The Blow Molding Of Pet Preform

It is important to understand the Pet Preform blow molding process so that you can successfully design and manufacture the parts or products you want. Ideally, you will end up with a high quality product that is efficiently created with as little waste as possible.

What is blow molding?

This process is used to make plastic hollow parts (such as bottles and containers) where air pressure fills the mold cavity with soft plastic.

Blow molding is divided into two steps:

First, a starting tube (called a parison) of molten plastic is produced.
Next, inflate the tube to the desired final shape, cool it, and release it from the mold.

Blow molding materials and products

Blow molding is limited to thermoplastics:

Polyethylene – the most commonly used polymer. In particular, high density and high molecular weight polyethylene (HDPE and HMWPE) provide the hardness required for the finished product, making the use of these materials more economical.
Polypropylene (polypropylene)
Polyvinyl chloride
Polyethylene terephthalate

Blow molding project design process

A well-designed design is critical to creating a finished product that meets your exact needs while saving manufacturing costs. Here is a brief overview of the design steps to bring your product to life:

Create a model of the part. The store team created a 3D drawing with a CAD program, which allowed you to see your product accurately before making a physical mold.
Design and manufacture molds. The attention to detail in the design phase ensures ease of production and efficiency.
Run a quality check. After the design and mold making are approved, your work begins. Throughout the process, the blow molding team conducts intensive inspections on a regular basis to monitor quality, reliability and consistency.

If you are considering using blow molding technology to produce your next product, then contact Gillian Plastics now. We are a professional China Pet Bottle manufacturer. Welcome to leave a message and inquire.

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