Mylar Heat Resistant Tape
 | Mylar Heat Resistant Tape
Contact Us |
High Heat Tape Company is a manufacturer of mylar heat resistant tape for heat resistant masking, PCB process protection, electronic fixing, and clean removal after controlled heat exposure. The tape is made with PET/Mylar film backing and can be coated with acrylic or silicone adhesive according to the working temperature, residue requirement, and bonding surface. Typical total thickness is 0.05 mm to 0.09 mm, with 25 um to 50 um film options for masking edges, coil wrapping, component holding, and die-cut parts that need stable shape under heat.
Product Photos
Technical Data Sheet
Item | Typical Value |
Product Type | Mylar heat resistant tape |
Backing Material | PET/Mylar polyester film |
Adhesive Option | Acrylic adhesive or silicone adhesive |
Total Thickness | 0.05 mm - 0.09 mm |
PET/Mylar Film Thickness | 25 um - 50 um |
Adhesive Coating | 20 g/m2 - 35 g/m2 typical factory test range |
Color Option | Green, blue, amber, clear, or selected color |
Peel Adhesion to Steel | 5 - 9 N/25 mm typical reference value |
Tensile Strength | 90 - 160 N/25 mm |
Elongation at Break | 80% - 140% |
Dielectric Breakdown Voltage | >= 4 kV typical reference value |
Continuous Heat Resistance | 130C - 180C based on adhesive and sample confirmation |
Short-Term Heat Resistance | 180C - 220C, mainly for silicone adhesive version |
Residue Observation | Low adhesive transfer after 180C x 30 min sample heat aging check |
Edge Lifting Check | <= 1 mm after heated sample observation |
Film Shrinkage Check | <= 0.5% under selected test condition |
Suggested Bonding Condition | Clean dry surface with firm hand or roller pressure |
Slit Width Tolerance | +/- 0.3 mm typical for narrow rolls |
Die-Cut Tolerance | +/- 0.2 mm typical after sample confirmation |
Supply Form | Slit rolls, log rolls, sheets, die-cut parts |
Applications
- PCB solder masking during controlled short heat exposure
- Connector, gold finger, and solder pad temporary protection
- Electronic component holding before assembly validation
- Motor, transformer, and coil electrical insulation where >= 4 kV breakdown voltage reference is required
- Battery pack fixing and insulation zone marking with colored PET/Mylar backing
- Powder coating, anodizing, plating, and coated metal masking
- Heat resistant masking on aluminum, stainless steel, painted panels, and solder mask surfaces
- Die-cut masking pieces for screw holes, contact points, and fixture positions, with +/- 0.2 mm typical die-cut tolerance after sample confirmation
Benefits
- PET/Mylar backing helps keep masking edges stable during heating, with typical film shrinkage observation controlled within <= 0.5% under selected test conditions.
- Acrylic and silicone adhesive options make it easier to match the tape to different heat and residue requirements.
- Low residue performance helps reduce cleaning work after PCB masking, especially on solder mask, aluminum, stainless steel, and coated surfaces.
- The thin polyester film has useful tensile strength while still being suitable for narrow slitting and die cutting.
- Green or blue translucent colors make covered areas easier to identify during production inspection.
- Clean removal after cooling helps reduce adhesive transfer when the tape is removed from heat-aged surfaces.
- Slit rolls, log rolls, sheets, and die-cut parts can be matched to fixture points, soldering zones, holes, and contact areas.
- Batch sample checks can include peel adhesion, dielectric breakdown, residue observation, edge lifting, and film shrinkage.
How Should Heat Resistance Be Checked Before PCB Masking?
Heat resistance should be checked under the same conditions the tape will see in production. For PCB masking, the tape must stay in place during soldering, coating, plating, drying, or short bake exposure without curling, shrinking, or lifting away from the board surface. A sample strip should be applied to the actual PCB solder mask, connector area, coated metal, or other working surface with firm hand pressure or roller pressure on a clean, dry surface. For silicone adhesive versions, a common sample heat aging observation is 180C x 30 min, followed by checking adhesive transfer, edge lifting within <= 1 mm, film deformation, staining, and removal force after cooling.
Product Overview
This heat resistant PET tape is used where standard film tape may soften, shrink, lift at the edge, or leave adhesive after heating. As a polyester film masking tape, it gives a thin and firm cover for solder pads, connectors, component edges, coated panels, metal surfaces, and insulation areas without adding bulky material to the assembly.
The adhesive should be selected by the real process, not only by the highest temperature shown on a data sheet. Acrylic adhesive Mylar tape is commonly used for electronic fixing, color identification, coil wrapping, and moderate-temperature insulation where stable tack and dielectric performance are needed. For solder masking, plating, anodizing, coating, or short bake exposure, silicone adhesive PET tape is usually the better choice because it is easier to remove cleanly after heat aging and has lower adhesive transfer risk.
Production details can be adjusted by film thickness, adhesive coating, roll width, color, liner, and converted shape. Adhesive coating is normally controlled around 20 g/m2 - 35 g/m2, depending on tack level and removal force. Before bulk use, engineering teams normally check dwell time, surface cleanliness, bonding pressure, solder mask compatibility, film shrinkage, staining, and removal force after cooling, not just the peak temperature.
What Makes PET/Mylar Film Useful for Heat Resistant Masking?
PET/Mylar film is useful because it is thin, strong, and stable enough for heated masking work. It helps keep covered areas in position around PCB pads, connectors, metal edges, battery parts, and electronic components that need temporary protection. Compared with soft paper or general film tape, polyester film is less likely to stretch during application or tear into small pieces during removal. For more controlled production work, the tape can be supplied as slit rolls, log rolls, sheets, or die-cut pieces. Narrow rolls can be slit from 3 mm, with +/- 0.3 mm typical slit width tolerance, helping the masking shape fit soldering zones, contact fingers, screw holes, and fixture points more accurately.
FAQ
1. Is this tape the same as aluminum Mylar shielding tape?
No. This is PET/Mylar polyester film adhesive tape for heat resistant masking and electrical fixing. It is not aluminum Mylar cable shield, EMI/RFI shielding tape, or drain wire shielding material.
2. Should I choose acrylic adhesive or silicone adhesive?
Acrylic adhesive is suitable for moderate heat, electronic fixing, insulation, and cost-sensitive use. Silicone adhesive is better for higher temperature masking, clean removal, and lower residue risk after heating.
3. Can this tape be used for PCB masking?
Yes. It can be used as PCB masking PET tape when temperature, dwell time, solder mask surface, bonding pressure, and removal condition are checked by sample testing before production use.
4. Can the tape be supplied as die-cut parts?
Yes. High Heat Tape Company can produce slit rolls, log rolls, sheets, and die-cut parts. Width, shape, liner, and tolerance can be adjusted after sample confirmation.