Keeping Extrusion Blow Moulding Requirements Separate from PET Blowing

Author: HZM Machinery Views: 412

Extrusion blow moulding forms a hollow parison from melt before closing the mould and inflating it. Two-stage PET stretch blowing starts with a preform. Process settings and equipment claims should not be transferred between these routes.

Describe the intended container

Identify the polymer, geometry, neck, handle features and required package properties. For extrusion blowing, material distribution and trimming requirements are part of the manufacturing assessment. A PET-preform blower catalogue does not establish extrusion capability.

Evaluate the complete production result

Inspect dimensions, wall distribution and the functional tests needed for the container. Include downstream finishing and rejected material in output calculations. Use the appropriate machine and material documentation for any process adjustment.

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PET Blow Molding Machine Principles and Process

Currently, most blow molding machines employ a two-step method, requiring the conversion of plastic raw materials into preforms before the actual blowing process. The commonly used material is environmentally friendly PET (Polyethylene Terephthalate) plastic, collectively referred to as PET blow molding machines.

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User What are the three types of blow moulding?

Blow molding is a manufacturing process used to produce hollow plastic parts. There are three main types of blow molding: 1、Extrusion Blow Molding (EBM) This is the most common type of blow molding. In EBM, a continuous tube of plastic, called a parison, is extruded (pushed out) from an extruder. The parison is then enclosed […]

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