During pre-blowing, the warm and softened plastic sheet is inflated before the forming tool is raised toward the material.
Pre-blowing helps distribute the material more evenly across the tool surface before vacuum is applied. This can help support a more consistent forming result, especially for components with larger surfaces or more complex geometries.
The process is used to prepare the material before the vacuum forming stage begins.
As the material becomes softer during heating, controlling how the sheet behaves before forming becomes an important part of the process.
Pre-blowing is often used for components with larger surfaces or more complex shapes where material distribution can affect the final result.
The process helps prepare the material before vacuum is applied and supports a more even distribution across the forming tool surface.
Once the material has been prepared through pre-blowing, the vacuum forming stage begins. During this step, vacuum pressure is used to shape the plastic sheet over the forming tool.
Want to learn more about the vacuum forming process? Contact our team or continue to the vacuum forming stage where the heated material is shaped over the forming tool using vacuum pressure.
In vacuum forming, a plastic sheet is heated until it becomes pliable, then it is sucked onto a mold using vacuum to take its shape
The tool is placed in a vacuum forming machine.
The sheet is heated from both the top and bottom to a temperature between 170 and 210 degrees Celsius before forming.
The warm and soft sheet is inflated, and the forming tool is raised toward the plastic material.
With the help of vacuum, the plastic material is shaped over the forming tool.
After cooling, the tool is lowered, and the product is then ready for post-processing.
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