H.B. Fuller PHOTOCAP® 15585P

H.B. Fuller PHOTOCAP® 15585P is an ultrafast-curing, PID-resistant EVA (ethylene vinyl acetate copolymer) photovoltaic encapsulating film with HLT™ higher light transmission in the UV wavelength region to allow greater power generation with blue light-sensitive photovoltaic devices. It has a short lamination cycle, excellent light transmission, and outstanding stability in the field.

Polymer Name: Ethylene Vinyl Acetate Copolymer (EVA)

End Uses: Photovoltaic Device, Silicon Modules

Technical Data Sheet
Message our experts with questions
Robert Blackstone avatar

Robert Blackstone

Global Leader - Inside Sales

Please reach out to me with any questions, I am happy to assist you in finding the right product or learning more about our storefront

Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Application Area
Plastics & Elastomers End Uses
Typical Applications

PHOTOCAP® 15585P is typically used in crystalline silicon modules where the cells are responsive below 360 nm. Due to the increase transmission of UV light, it is recommended that PHOTOCAP® 15580P be used behind the cells for backsheet protection.

Lamination Instructions
  • Platen temperature: 140 - 150°C
  • Evacuation Time: 180 - 300 seconds
  • Cure Time: 300 - 360 seconds


Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Tensile Strength15.0MPaASTM D638
Shrinkage (Transverse direction)max. 1%IEC 62788
Ultimate Elongation530.0%ASTM D638
Shrinkage (Machine direction)max. 3%IEC 62788
Adhesion (Glass)120.0N/cmHBF
Adhesion (Backsheet)60.0N/cmHBF
Moisture Vapor Transmission Ratemax. 25g/m²/24 hrsAFTM F1249
Water Absorptionmax. 0.5wt.%ASTM D570
Optical Transmission92.0%ASTM E424
UV Cut-off305.0nmASTM E424
Volume Resistivitymin. 5 x 10¹⁵Ohm cmASTM D257
Dielectric Strengthmin. 25KV/mmASTM D149
Comparative Tracking Index600.0VIEC 60112

Regulatory & Compliance

Regulatory Information

PHOTOCAP 15585P is a UL listed product in category QIHE2 Photovoltaic Polymeric Materials. Each HB Fuller manufacturing plant maintains a separate UL file. Please refer to UL file numbers E10488, E335471 and E335472.

Safety & Health

Safety Information

Avoid contact with skin and eyes. Product will irritate eyes if contact occurs. Skin irritation is possible on prolonged or repeated contact.

Packaging & Availability

Regional Availability
  • Africa
  • Europe (Excluding Russia)
  • India
  • Latin America
  • Middle East
  • North America

Storage & Handling

Storage Conditions

Clean and dry conditions below 40°C and 70% RH. For best performance, the product should be stored and used at 65°F – 85°F. Do not freeze.