Custom Color Highland Barley Paper with Adhesive – High-Temp Resistant for 18650/21700/26650/32650 Batteries
When assembling cylindrical lithium battery packs (18650, 21700, 26650, 32650), reliable insulation, heat resistance, and easy assembly are non-negotiable—yet ordinary insulating papers often fall short on one or more fronts. Our Custom Color Highland Barley Paper solves this by blending three key strengths: extreme high-temperature resistance, strong pre-applied adhesive, and customizable colors for visual differentiation. Made from natural highland barley fiber, it’s not just an insulator—it’s a production-friendly solution that streamlines assembly, enhances safety, and lets you match your brand or module identification needs.
1. Core Advantages: Why This Highland Barley Paper Stands Out
| Advantage |
Key Benefit for Battery Pack Manufacturers |
| Customizable Colors |
Available in red, blue, green, black, white, or your brand color—enables quick visual sorting (e.g., 区分 different battery modules or production batches) and reduces assembly errors. |
| 180℃ High-Temp Resistance |
Withstands continuous use at 180℃ (short-term up to 220℃), outperforming standard PET or kraft paper (≤120℃) and avoiding insulation breakdown during battery charging/discharging. |
| Strong Adhesive Backing |
High-tack acrylic adhesive bonds firmly to battery casings; resists peeling even under vibration (ideal for e-scooters/EVs) or temperature cycles (-40℃ to 180℃). |
| Natural & Eco-Friendly |
Made from renewable highland barley fiber—halogen-free, non-toxic, and RoHS/REACH compliant, fitting green energy and consumer electronics standards. |
| Thin & Space-Saving |
0.08mm–0.2mm thickness saves critical space in compact battery packs (e.g., power banks, laptop batteries) without compromising insulation performance. |
2. Technical Specifications (By Battery Cell Type)
| Specification |
For 18650 Cells |
For 21700 Cells |
For 26650 Cells |
For 32650 Cells |
| Compatible Cell Size |
18mm (diameter) * 65mm (length) |
21mm * 70mm |
26mm * 65mm |
32mm * 65mm |
| Material |
Natural highland barley fiber + acrylic adhesive |
Natural highland barley fiber + acrylic adhesive |
Natural highland barley fiber + acrylic adhesive |
Natural highland barley fiber + acrylic adhesive |
| Color Options |
Custom (red/blue/green/black/white) or standard natural |
Same as left |
Same as left |
Same as left |
| Temperature Resistance |
Continuous: 180℃; Short-term: 220℃ |
Continuous: 180℃; Short-term: 220℃ |
Continuous: 180℃; Short-term: 220℃ |
Continuous: 180℃; Short-term: 220℃ |
| Adhesive Performance |
Peel strength ≥0.5N/cm (to aluminum); Service temp: -40℃–180℃ |
Peel strength ≥0.5N/cm (to aluminum); Service temp: -40℃–180℃ |
Peel strength ≥0.6N/cm (to aluminum); Service temp: -40℃–180℃ |
Peel strength ≥0.6N/cm (to aluminum); Service temp: -40℃–180℃ |
| Electrical Insulation |
Dielectric strength ≥10kV/mm; Volume resistivity ≥10¹⁴Ω·cm |
Dielectric strength ≥10kV/mm; Volume resistivity ≥10¹⁴Ω·cm |
Dielectric strength ≥12kV/mm; Volume resistivity ≥10¹⁴Ω·cm |
Dielectric strength ≥12kV/mm; Volume resistivity ≥10¹⁴Ω·cm |
| Standard Thickness |
0.1mm / 0.15mm |
0.1mm / 0.15mm |
0.15mm / 0.2mm |
0.15mm / 0.2mm |
| Standard Form |
Roll (50m/roll, width 20mm) or pre-cut sheets (20mm*70mm) |
Roll (50m/roll, width 24mm) or pre-cut sheets (24mm*75mm) |
Roll (50m/roll, width 28mm) or pre-cut sheets (28mm*70mm) |
Roll (50m/roll, width 34mm) or pre-cut sheets (34mm*70mm) |
3. Application Scenarios
This customizable highland barley paper is tailored for cylindrical battery packs across industries, where insulation safety and production efficiency matter:
- Consumer Electronics: 18650 battery packs for power banks, laptops, and flashlights—thin design fits compact enclosures; custom colors help distinguish product lines.
- Power Tools: 21700/26650 packs for cordless drills, grinders, and leaf blowers—high-temp resistance handles heavy-duty discharge heat; adhesive resists tool vibration.
- Electric Mobility: 26650/32650 packs for e-scooters, electric bikes, and portable EV chargers—color-coding simplifies module maintenance; moisture resistance adapts to outdoor use.
- Energy Storage: 32650 packs for home solar storage and industrial backup power—eco-friendly material aligns with green energy goals; reliable insulation ensures long-term safety.
4. Customization & Order Details
We offer end-to-end customization to match your exact production needs—no matter the cell size or color preference:
| Customization Item |
Available Options |
| Color |
Any Pantone color (provide color code) or custom brand color; minimum order for custom colors: 5 rolls |
| Dimensions |
Roll width: 10mm–100mm (custom); Pre-cut sheet size: Per your cell specs (±0.1mm precision) |
| Thickness |
0.08mm–0.3mm (adjustable for insulation/spacing requirements) |
| Adhesive Type |
Standard acrylic (high temp) or silicone adhesive (for -60℃–200℃ extreme environments) |
| Packaging |
Standard: Moisture-proof bags + cartons (50m/roll); Custom: Small test rolls (10m/roll) or branded packaging |
5. Quality Assurance & Support
- Certifications: RoHS, REACH, and UL 94 V-0 (flame retardant)—meets global safety standards for electronics.
- Testing: Each batch undergoes heat resistance, adhesive peel strength, and insulation performance tests; test reports provided free for bulk orders.
- MOQ & Lead Time: Standard colors: MOQ 5 rolls (ships in 2–3 days); Custom colors: MOQ 5 rolls (ships in 5–7 days).
- After-Sales: Free color samples (5cm*5cm swatches) and 1m test rolls; 6-month warranty for quality issues (e.g., adhesive failure, color fading).
Need help matching the right thickness or color to your battery pack? Send us your cell layout or brand color code—our team will recommend the optimal solution. Contact us today for a detailed quote!
