Acrylic Adhesive Polyimide Tape
 | Acrylic Adhesive Polyimide Tape
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High Heat Tape Company is an acrylic adhesive polyimide tape manufacturer for electronics assembly, industrial masking, and die-cut parts where silicone adhesive is not preferred. This tape combines PI film backing with silicone-free acrylic adhesive for medium/high temperature masking, electrical insulation, and silicone contamination control. It is often used before conformal coating, subsequent bonding, inspection, or component assembly, where removal performance needs to be checked on the actual surface after heating.
Product Photos
Applications
- PCB solder masking where non-silicone polyimide masking tape is preferred
- Wave solder masking on selected FR-4 and gold substrate areas
- Electronics assembly masking before conformal coating or bonding
- Battery tab insulation and lithium-ion battery fixing
- Transformer insulation, motor coil wrapping, and fine wire fixing
- Industrial masking on metal, glass, ceramic, and selected coated surfaces
- Die-cut polyimide masking parts for connectors, sensors, pads, and small components
- Temporary protection after confirmed heat cycle and residue testing
- Narrow slit rolls for masking lines and automated assembly placement
Technical Data Sheet
Item | Typical Value |
Product type | Acrylic adhesive polyimide tape |
Backing material | Polyimide film |
Adhesive type | Silicone-free acrylic pressure-sensitive adhesive |
Color | Amber/brown, other colors by sample confirmation |
Total thickness | 50 um-80 um typical factory test range |
PI film thickness | 25 um or 50 um typical reference value |
Acrylic adhesive thickness | 25 um-55 um based on confirmed order specification |
Peel adhesion to steel | 5-9 N/25 mm typical reference value |
Tensile strength | 90-150 N/25 mm typical factory test range |
Elongation at break | 40%-70% typical reference value |
Dielectric strength | 6-8 kV typical reference value |
Operating temperature | -40C to 155C typical reference range |
Short-time masking temperature | 180C-200C after sample test confirmation |
Residue check | Sample observation after confirmed heat cycle |
Edge lifting observation | 24-72 h sample observation recommended |
Slit width tolerance | +/-0.2 mm typical for narrow rolls |
Die-cut tolerance | +/-0.1 mm to +/-0.3 mm depending on shape |
Roll winding check | Stable tension, clean slit edge, no obvious telescoping in sample roll |
Available format | Slit rolls, sheets, kiss-cut parts, die-cut pieces |
Core size | 3 inch paper or plastic core |
Surface test | FR-4, gold, aluminum, steel, coated surface test recommended |
Benefits
- Helps reduce silicone transfer concerns before coating, bonding, inspection, or assembly.
- PI film backing supports dimensional stability, thermal resistance, and electrical insulation.
- Acrylic adhesive provides useful initial tack for small masking zones, tabs, and narrow strips.
- Typical operating reference is -40C to 155C, with 180C-200C short-time masking after sample confirmation.
- Removal should be checked by heat cycle testing, residue observation, peel angle, and removal timing.
- Batch sample checks can include 24-72 h edge lifting review after heating or storage.
- Slit rolls and die-cut polyimide masking parts support repeated masking on PCB panels, connectors, pads, and sensors.
- Acrylic adhesive limitations should be considered for PP, PE, PTFE, powder coating, and other difficult surfaces.
What Makes Acrylic Adhesive Useful in Silicone-Sensitive PI Tape Applications?
Acrylic adhesive is useful when the process needs heat-resistant PI film but wants to reduce silicone contamination concern. In electronics assembly, silicone transfer may affect coating wet-out, bonding strength, inspection results, or clean surface requirements. This gives acrylic adhesive a different role from silicone PI tape. It is not mainly chosen for the highest temperature limit. It is chosen for controlled masking where non-silicone contact matters, such as PCB protection, connector masking, battery tab insulation, and die-cut parts used before coating, bonding, or inspection.
Product Overview
Acrylic adhesive polyimide tape is used when a process needs the strength and heat stability of PI film, but does not want silicone adhesive touching the working surface. This is common in electronics assembly, coating preparation, bonding areas, and masking work where even a small transfer risk can create problems later.
This product should not be treated as the same choice as silicone polyimide tape. Silicone adhesive is often selected for higher temperature exposure. Acrylic adhesive is usually selected when non-silicone contact, clean surface control, repeat masking, and tested removal are more important than the highest possible heat rating.
A common factory construction uses 25 um or 50 um polyimide film with 25 um-55 um acrylic adhesive coating. Total thickness is usually within 50 um-80 um, depending on the confirmed specification. In sample board checks, FR-4, gold finger areas, aluminum, stainless steel, and coated metal surfaces can show stable initial tack, but surface testing is still recommended before production.
For converting work, small details matter. Acrylic adhesive PI tape rolls can be slit into narrow widths, with +/-0.2 mm as a typical slit width tolerance for many narrow roll orders. Simple die-cut parts are usually controlled within +/-0.1 mm to +/-0.3 mm, depending on part size, liner support, kiss-cut depth, and pull-tab design.
How Should Acrylic Adhesive Polyimide Tape Be Tested Before Production?
Before production use, acrylic adhesive polyimide tape should be tested on the actual substrate, not only by checking the film temperature rating. Engineering teams usually confirm surface cleaning, bonding pressure, dwell time, heating temperature, heating duration, peel angle, and removal timing. FR-4, gold fingers, aluminum, stainless steel, coated metal, plastic housings, and powder-coated surfaces may behave differently. PP, PE, PTFE, and other low surface energy materials need extra validation because acrylic adhesive may not wet out evenly. A useful trial includes residue check after heating, 24-72 h edge lifting observation, coating or bonding compatibility, and die-cut edge removal performance.
FAQ
1. Is acrylic adhesive polyimide tape the same as silicone polyimide tape?
No. Acrylic adhesive polyimide tape is selected for non-silicone masking and contamination control, while silicone adhesive tape is usually preferred for higher temperature exposure.
2. Can this tape be removed cleanly after heating?
Clean removal is possible on selected substrates, but it should be confirmed through heat cycle validation, residue check, peel angle, and removal timing test before production.
3. Can the tape be supplied as die-cut parts?
Yes. High Heat Tape Company can produce slit rolls, sheets, kiss-cut shapes, and die-cut polyimide masking parts based on confirmed drawings and sample tests.
4. Which surfaces need extra testing?
Low surface energy plastics, powder-coated surfaces, rough coatings, oily metals, and newly treated surfaces need extra compatibility testing before bulk use.