Specialty Tapes
Specialty Tapes
The use of specialty tapes is designed to fulfill the needs of a specific application or market.HiTemp application specialists excel at matching high temperature tapes with your requirements,including laminating, bundling, heat sealing, electric insulation, roller wrapping and masking applications in many of the following industries:
Teflon adhesive tape is also known as PTFE adhesive tape. First, glass fiber is used as the base cloth, coated with Teflon dispersion and dried to make Teflon glass fiber cloth. It is heat resistant and anti-adherent tape made with silicone or acrylic adhesive on one side. The standard width of the heat resistant Teflon tape is 39.4 inches and it can be cut to small specifications with high precision. It comes in various thicknesses from 3 to 14 mil. Teflon sticky tape is characterized by high strength, high temperature resistance, and normal temperature resistance up to 260°F (500°F). At the same time, the surface is smooth, anti-adherent, bright and resistant to various chemical corrosion.
Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene which is a high-performing flexible material famous for its non-stick surface and it’s high heat resistance.PTFE is well known under the brand name Teflon, which was discovered in 1938. It is used in a variety of industries and applications to reduce the coefficient of friction. Due to the chemical resistance of fluoropolymer bonds, PTFE is non-reactive to numerous chemicals.
features-and-benefits
| Features | Benefits |
|---|---|
| Low Surface Energy | Excellent release and self-cleaning capabilities |
| Functional temperature range from -200°C (-328°F) to 165°C (330°F) | |
| Highest Dielectric Strength | Excellent insulator in many applications |
| Non-Flammable | Meets safety requirements for aviation and military applications |
| Highest mechanical strength in fluoropolymer film | Allows greater design flexibility over other fluoropolymers |
| Lower density than ETFE and FEP | Lighter weight constructions for high performance applications |
| Highest Abrasion resistance | Suitable for tough indoor and outdoor environments |
CHEMFILM® PFA-PG Fluoropolymer Film Typical Properties*
| Typical Properties | Test Method | Value | Units |
|---|---|---|---|
| General | |||
| Specific Gravity | ASTM D-792 | 1.68 | |
| Yield | 22(115) | m2/kg (ft2/lb) | |
| Water Absorption, 24 hr. | <0.01 | % | |
| Mechanical | |||
| Tensile Strength | ASTM D-882 | 55(8000) | MPa (psi) |
| Elongation, Ultimate | ASTM D-882 | 250 | % |
| Tensile Modulus | ASTM D-882 | 1375(200000) | MPa (psi) |
| Initial Tear Strength | ASTM D-1004 | 4.4(450) | N(gm/mil) |
| Propagation Tear Strength, 1 mil | ASTM D-1922 | 11.6(1200) | N(gm/mil) |
| Fold Endurance (M.I.T) | ASTM D-2176 | >250000 | cycles |
| Electrical | |||
| Dielectric Strength, 1 mil | ASTM D-149 | 216(5500) | kV/mm (V/mil) |
| Dielectric Constant, 1 kHz | ASTM D-150 | 2.55-2.63 | |
| Dissipation Factor, 1 kHz | ASTM D-150 | <0.005 | |
| Thermal | |||
| Melt Point | ASTM D-3418 | 240(465) | °C (°F) |
| Continuous Service Temperature | 300-340 | °C (°F) | |
| Flammability | ASTM UL-94 | V-0 | |
| Heat Sealing Temperature | 245-260(475-500) | °C (°F) | |
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Applications
- I. Vinyl Windows
The manufacturing of PVC and plastic profiles often involves ‘welding’ two PVC frame sections together. This is accomplished by melting the two adjoining ends so that the melted plastic joins together and hardens in its welded state. The completed frames can be used to make windows, skylights, and some door profiles. Equipment used can be Protection of heat platen during corner weld process – PTFE glass tape or fabric is applied to weld plates to allow for heat to pass through the tape to accomplish a joint weld. The melted PVC will not adhere to the tape or fabric surface which allows for a clean weld. The equipment used for this process can vary in size and complexity.
The simplest equipment is referred to as a single point welder. This equipment allows the operator to weld one window corner at a time. It is typically used for custom window profiles, or by small companies with relatively low volumes of window production. The next style of equipment is semi-automated and is referred to as a two-point welder. As expected, this equipment allows the operator to weld two window corners at one time. The most popular style of equipment is used for high volume facilities – the equipment is referred to as a four-point welder. This equipment is usually more automated and allows for the sealing of a complete 4 corner window or door in one step. The moving image shows a hot plate which is covered with PTFE-glass tape on both sides. The angled edge of the PVC profile becomes molten against the platen. The platen is then automatically removed and the two molten ends are pushed together and held in place while the molten plastic is held in place, forming the corner of a PVC window frame.
Related Products- HiTemp HiTape TFE Premium - Available in Silicone & Acrylic PSA
- HiTemp HiTape TFE Standard - Available in Silicone & Acrylic PSA
- UHMW Tapes
- II. Heat Sealer Bars
HiTemp Materials offers a complete range of PTFE Adhesive Tapes to perform in a variety of heat seal packaging processes involving impulse heat sealers and hot bar sealers. HiTemp Materials provides a non-stick, abrasion resistant surface designed for use in high temperature heat sealing applications, including food, medical and pharmaceutical packaging. These highly durable tapes allow for increased process speeds and minimal down time increasing overall process efficiency. Different backings and adhesive systems are combined to offer a variety of solutions that balance cost and performance.
- III. Heat Sealing Tapes
HiTemp material offers solutions for heat sealing applications featuring a non-stick surface, temperature resistance, and dimensional stability. Designed to provide options for release surface for packaging plastics, these PTFE tape variations resist tear and wear making them the ideal solution.
- IV. PTFE Glass Tapes
PTFE glass laminates are premium solutions for heat seal packaging. A proprietary manufacturing method allows these products to have fewer defects such as cracks and pinholes. The more consistent release surface and higher PTFE thickness over the glass gives these products longer life and more cycles compared to lower grade options. This allows users to operate more efficiently with less down time spent changing release tapes. HiTemp PTFE glass cloth tapes feature PTFE coated glass fabric to enhance dimensional stability, tear strength, and abrasion resistance while maintaining a non-stick surface.
Several different grades are available at various PTFE coating weights to offer economic options or high performance solutions for smoother seals and increased durability. In addition to silicone adhesive, acrylic is available for application temperatures under 350°F where higher bond strength is desired.