97久久超碰国产精品旧版麻豆_伊人久久大香线蕉AV综合_孕妇特级毛片WW无码内射_www久久无码天堂mv 中国人妻被黑人巨大征服,色狠狠色婷婷丁香五月,特大巨黑吊av在线播放,国产日产精品久久久久快鸭

Current Position:Home - Product - Product

Lamination Type Backsheet—KPC/KPK

Product Series

Model  Structure   Thinckness   Color 
BEC-303 F-coating/PET/Adhesive/PVDF  15μm/250μm/15μm  White 
BEF-302  PVDF/Adhesive/PET/Adhesive/PVDF  15μm/250μm/15μm  White 

Introduction

Firstbacksheet?  BEC-303 has a structure of the PET film sandwiched by PVDF film and Fluorine polymer. BEC-303 has excellent weather-resistance properties, the EVA side provides high reflectivity and strong adhesion, the air side undergoes long-term aging test, which can ensure the safety and stability of  modules.

Firstbacksheet?  BEF-302 is designed as multi-layer structure. Hydrolysis resistant PET acts as middle substrate,  and both sides are laminated with PVDF films by automation precision process. The adhesion between PET and PVDF is high and stable, no delamination at long-term field exposure. 


Basic Property

Property Quoted Standard Unit BEC-303 BEF-302
Color  / / White White
Peeling Strength with EVA  GB/T 2790-1995 N/10mm   >100   >100
Peeling strength at layers  GB/T 8808-1988  N/15mm    >5.0    >5.0 
Water Vapor Transmission Rate   ASTM F1249-2006 g/m2.24h   <2.0   <2.0
 Shrinkage150*30min , MD/TD   GB/T 13542.2-2009 %   <0.5/0.3   <0.3/0.3