What are the characteristics of high-temperature adhesive tape customization in photovoltaic field?

The core of customization of high-temperature adhesive tape in photovoltaic field is to adapt to laminating high temperature, no residual adhesive, air permeability/sealing, weather resistance for 25 years, and be compatible with automatic production line, and to customize precise parameters and structure according to process and component type.

First, the characteristics of core customization (by dimension)

1. Customization of temperature resistance (core)

Long-term temperature resistance: 140–160℃ (lamination process), with short-term peak value of 180–260℃.

Low-temperature adaptation: -40℃, which can meet the outdoor extreme cold and transportation.

Customization direction: Select the base material (PET/PI/PTFE/ fiberglass cloth) and adhesive system (silica gel/acrylic acid) according to the lamination temperature/time.

2. Bonding and peeling customization (sub-scene)

Temporary fixation (positioning of welding tape/bus bar): strong initial adhesion, stable adhesion at high temperature and no residual glue peeling (silica gel/modified acrylic acid)

Permanent sealing/fixing (frame/double-glass edge): high peel strength (≥12N/cm), and retained strength ≥80% after 1000h wet-heat aging.

Customization options: removable/permanent, low/medium/high viscosity, single/double sided, with/without release paper.

3. Structure and function customization (process adaptation)

Customization of breathable perforation (required for lamination): the aperture is 0.5-2mm, the spacing between holes is precisely arranged, which is suitable for EVA/POE fluidity, and it is bubble-proof and glue-spill-proof.

Sealing/waterproof customization (double glass/frame): closed-cell foam/dense PET substrate, low water vapor permeability, meeting IEC 61215.

Insulation/flame retardant customization: dielectric strength ≥20kV/mm, UL94 V-0, which meets the insulation and safety requirements of battery chips.

UV/weatherproof customization: QUV 3000h has no yellowing, which guarantees 25-year outdoor life.

4. Size and shape customization (production line compatibility)

Width: 3 mm–1000 mm, customized according to battery piece/component/frame specifications.

Thickness: 0.05–0.8 mm (ultra-thin positioning/thickening seal)

Length/roll diameter: it is suitable for automatic tape pasting machine, and supports large roll/small roll, cutting/die cutting and punching.

Color/logo: transparent/white/black/blue, convenient for process identification and traceability.

5. Environmental protection and certification customization

Halogen-free, asbestos-free, RoHS/REACH compliant

Passed IEC 61215, TV, UL and other photovoltaic industry certifications.

Second, according to the typical customization scheme of application scenarios

form

Recommended scheme for key customization points of application scenario

The battery chip welding tape is ultra-thin, highly viscous, free of residual glue, resistant to 150℃ 0.05–0.1 mm PET+silica gel, and single-sided.

Laminated exhaust/spill-proof precise perforation, breathable and high temperature resistant perforation Teflon/PET, with aperture of 0.8–1.5 mm.

Double-glass edge seal is high viscosity, weatherproof, waterproof and low moisture foam double-sided/acrylic, with a thickness of 0.3–0.8 mm.

Frame fixing/sealing PE foam with strong adhesion, UV resistance and moisture resistance+modified acrylic acid, passed IEC test.

Coating/spraying PI/PET high-temperature masking tape with high temperature resistance, easy tearing and no residual glue

Third, key considerations for customization

Process matching: lamination temperature/pressure, EVA/POE type, automatic linear speed.

Component type: single glass/double glass, with or without frame, N-type/TOPCon/HJT.

Environmental requirements: outdoor weather resistance, damp heat/dry heat, insulation/flame retardant.

Cost and yield: customization balances performance, yield and unit price.