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The absence of adhesive in the center zone allows for faster heat transfer through the tape, and makes the tape an excellent choice for specific types of impulse sealing applications, such as the manufacture of plastic bags. Impulse sealing wires and ribbons are free to expand and contract without being encumbered by adhesive, helping to extend their working life. Zone Tapes are a quick, easy and economical means of applying a non-stick surface to heat-sealing platens. The addition of adhesive strips on the edges eliminates the need for mechanical fastening.
This proprietary adhesive system is extremely aggressive, has an unlimited shelf life, and operates over a range of temperatures from -40°F to 350°F (-40°C to 177°C); while the center, non-adhesive, zone can withstand temperatures ranging from -400°F to 550°F (-240°C to 288°C). These tapes have received USDA approval for food processing and handling, and are FDA compliant (21 CFR177.1550).
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| Material | Nominal Thickness | Nominal Thickness | Adhesion | Tensile Strength | Maximum Operating | Minimum Adhesive Width Per Coated Edge | Slit Roll Lengths | |||||||||
| Suffix | Picture | Color | Adhesive | (Substrate) | (Adhesive) | (oz./in. of width) | (lbs/sq in) | Temperature | inch | yards | ||||||
| CAD |  |
Tan | Acrylic | 0.003" | 0.003" | 50 | 56 | 350°F (177°C) | 1/4" | 18, 36 | ||||||
| CAE | |
Tan | Acrylic | 0.005" | 0.003" | 50 | 100 | 350°F (177°C) | 1/4" | 18, 36 | ||||||
| CAF |  |
Tan | Silicone | 0.003" | 0.004" | 25 | 56 | 400°F (205°C) | 1/4" | 18, 36 | ||||||
| CAG | |
Tan | Silicone | 0.005" | 0.004" | 25 | 100 | 400°F (205°C) | 1/4" | 18, 36 | ||||||
| CAH | 0.005" | |||||||||||||||
Disclaimer:
All figures provided in the above table are based upon ASTM D 4969-97, the Standard Specification for Polytetrafluoroethylene (PTFE) Coated Glass Fabric. The above tensile values are based upon the ASTM D902 test method and are not actual values of AFC's materials. The above tensile values are 80% of the figures provided in Table 6 of specification D579. AFC states that its actual tensile will be greater than the above material specification and that actual tensile values will be provided upon request. AFC measures adhesion according to ASTM D 3654/D 3654M, Standard Test Methods for Shear Adhesion of Pressure-Sensitive Tapes, and actual adhesion values will vary. Edge Tear values are based upon ASTM D1424 (Elmendorf Tearing Test) and are average values that can vary.