Because thermoforming begins with a relatively expensive finished sheet of plastic, minimizing scrap is an important step in containing costs. Though good part design can reduce trim, some trimming will be necessary.
We also offer other secondary options for finishing and finalizing your products.
It’s generally best to trim a part when it is warm. High-production parts are usually trimmed right in the mold.
Trimming should be done in a separate area designated just for that operation. Accurate positioning and holding of each part is important. Small, thin parts are usually held in place by surrounding locators. For parts with complex shapes, fixtures should be built to hold the part in place while it is being trimmed.
There are many ways to join thermoformed parts, including:
Mechanical fasteners, Press and snap fits, Solvent bonding, Adhesive bonding, and Ultrasonic welding.
Part decorating usually begins with the mold design. The thermoforming process can transfer intricate mold details into the hot sheet. As a result, such highly defined details as lettering, logos, figures, and textures can be incorporated. Textured or embossed surfaces can give a plastic part a different appearance.
Printing is a process of marking a surface to apply decoration or information. Various techniques can be used to apply printing on thermoformed parts, including: Screen printing, Dyeing, Pad transfer, Diffusion, Flexography, Offset printing, and Laser printing
To label thermoplastic parts, labeling machines are used. These include machines that perform:
Hot stamping, Heat transfers, Gummed labels, and Decals.