PTFE Solutions for Heat Sealing
During heat sealing, plastic film is exposed to heated bars, platens, jaws or wires to create the required seal. Without an effective release surface, softened polymer can adhere to these components and gradually build up on the machinery.
PTFE-coated materials provide a high-temperature, non-stick barrier between the plastic film and the heated equipment.
This helps to:
Applications in Packaging Machinery
PTFE release materials can be used in a wide variety of plastic packaging and converting equipment.
Typical Depending on the machinery and process, the appropriate solution may be supplied as a sheet, adhesive-backed tape or fabricated belt. applications include:
Typical applications include:
Release Belts for Continuous Production
In automated packaging systems, the belt itself can form part of the sealing process.
Teastech can fabricate PTFE-coated release belts for applications where the material needs to travel continuously through heated sealing equipment.
The combination of heat resistance, mechanical stability and release performance can support high-speed operation while helping prevent the sealed polymer from adhering to the belt surface.
For side-sealing applications, tear-resistant belt constructions can also be selected where additional mechanical durability is required.
Clean and Consistent Sealing
The quality of the release surface can have a direct impact on the finished package.
Material sticking or residue on the sealing equipment can contribute to inconsistent seals, marking or interruptions to production. A correctly specified PTFE surface allows the sealed material to release cleanly and can help produce a smooth, consistent seal area.
Different surface textures can also be considered where the sealing process requires a particular finish or imprint on the polymer.
Fabricated to Suit Your Equipment
Teastech combines specialist PTFE material supply with in-house fabrication and conversion capabilities.
Materials can be fabricated to suit the dimensions and configuration of the customer’s packaging machinery.
Depending on the application, we can provide:
Material Selection and Technical Support
The correct solution depends on the type of film being processed, sealing temperature, production speed, machinery configuration and mechanical demands of the application.
Teastech can advise on the appropriate PTFE-coated material, thickness, construction and fabricated format, helping customers select a solution suited to their particular packaging process.
Supporting Efficient Packaging Production
For high-volume packaging operations, relatively small problems with sticking or residue can result in lost production time and increased maintenance.
Using the correct release material can help keep sealing equipment cleaner, reduce interruptions and support reliable cycle-after-cycle production.