Heat Sealing of Polypropylene Films

What is Heat Sealing of Polypropylene?
Heat Sealing, also known as Thermal Contact Welding, or Fusion Welding, is the process of bonding plastic film using heated tools in direct contact with the plastic material. Precisely controlled time, temperature, and pressure, are used in the heat sealing process. Fusion occurs as soon as the temperature of the material exceeds the glass transition temperature (for amorphous polymers), or melting temperature (for crystalline polymers). As soon as the desired temperature, pressure, and elapsed time is achieved, the tool is removed and the surfaces that have been joined together are allowed to cool down. As in RF Welding, the resulting weld can be as strong as the material itself.

Our Capabilities:
Over the last 25 years BCW has become known as an expert in the production of heat sealed pages and envelopes from polypropylene films. We use extremely efficient high-speed equipment to make us one of the most competitive manufacturers in the US. We are here to help you with your concept, design, and production needs! 

Custom Polypropylene Product - Minimums and Limitations:
Heat Sealing requires a tool for each size of a given product. If we do not already have a tool for your specific item, a small investment may be necessary. As a policy, we do not require a minimum order. But, if the requested quantity is too low, the tooling and set-up cost may be prohibitive. Our polypropylene machine limitations are approximately 13" x 23" per impression with films ranging from 50 micron to 120 micron in thickness. 

Examples of Custom Products:

  • Sheet Protectors
  • Envelopes
  • Job Ticket Holders
  • Sleeves
  • Pouches
  • Other Custom Products

To learn more about Heat Sealing of Polypropylene Films and how we can help, please call us toll free at 1-800-433-4229 and ask to speak to a custom project manager. Or, you may fill out our form and we will contact you as soon as possible. 
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