Blow Molding Knives, Parison Cutting Blades

Parison Cutting Blades specifically designed for the blow molding process

Blow molding knives, also known as parison cutting blades, are essential components in the blow molding process. This is a manufacturing technique to produce hollow plastic products such as bottles, containers, and automotive parts. Parison cutting blades cut parison before the final forming stage.

Blow molding knives play a crucial role in shaping and forming the molten plastic material into the desired product shape.  These knives are critical for achieving precise and consistent product dimensions in the blow molding process.

Proper design, material selection, and maintenance are essential to ensure the efficiency and reliability of the blow molding operation.


Knives and Blades at Fernite Machine Knives

We manufacture our knives and blades in our ISO 9001:2015 factory, using only high-quality raw materials and the latest advanced manufacturing techniques to ensure exceptional cutting performance. With decades of experience in manufacturing knives and blades for thermoplastics operations, Fernite provides an efficient, reliable, knowledgeable, and friendly service to the plastics industry. Our plastic recycling machine blades can be customized to your exact specifications, ensuring excellent performance in all types of blow molding machines.


Features of Blow Molding Knives (parison cutter blades)

Blow molding knives are typically custom-designed based on the specific shape and size of the product being manufactured.

These knives are usually made from high-quality steel, which can withstand the high temperatures and pressures involved in the blow molding process.

Blow molding knives can be categorized into various types, depending on the specific blow molding process:

  1. Used in the extrusion blow molding process to create products with a hollow center, such as bottles
  2. Employed in the injection blow molding process, which is commonly used for producing small, intricate parts like pharmaceutical containers
  3. Utilized in stretch blow molding, which is common for producing PET bottles

To discuss your requirements and receive a competitive quote, get in touch with our friendly team by emailing