CPPC/HPPC

Product Name: Transparent Water Blocking Back Sheet
Product Series: Water Barrier Layer Series
Product Code: HD-CPPC / HD-HPPC

KEY FEATURES

High water resistance: 10-2~10-3 g/m²·day
High transmittance Increase module energy yield
High weather resistance: Ensures 25-year service life

STORAGE

The product has high storage stability and no other special storage requirements. The warranty period is one year under cool and dry storage conditions, and the generality of laminating process should be evaluated after the period.

SPECIFICATIONS

Product Code	Product Type	HD-CPPC	HD-HPPC
Product Structure (HD-CPPC)		Air Coating: 10μm, Weather-Resistance, UV Cut-Off
			Middle Layer: 288μm, Insulation Property, Water Vapor Barrier
			Glue Layer: 8μm, Bonding
			Water Block Layer: 15μm, Water Vapor Barrier
			Inner Coating: 5μm, Great Bonding Performance with EVA
Product Code	Product Code	HD-CPPC-T	HD-HPPC
Product Name		High transmittance water blocking back sheet for crystalline silicon terrestrial photovoltaic (PV) modules
Thickness		Air Coating: 10±2μm Middle Layer: 288μm±5% Adhesive Layer: 8±2 μm Water Blocking Layer: 12±1 μm Inner Coating: 5 (-0, +2) μm Total Thickness: 323 μm±5%	Air Coating: 22±2μm Adhesive Layer: 8±2 μm Middle Layer: 275μm±5% Adhesive Layer: 8±2 μm Water Blocking Layer: 12±1 μm Inner Coating: 5 (-0, +2) μm Total Thickness: 332 μm±5%
Color		Transparent	Transparent

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NO.	Test Item		Test Item	Unit	Test Method	Specifications
NO.	Test Item			Unit	Test Method					HD-CPPC	HD-HPPC
1	Nominal Thicknes	Nominal Thicknes		μm	GB/T 13542.2-2021	332	332
2	Thickness Deviation			-	GB/T 13542.2-2021		±5%	±5%
3	Width Deviation	Width Deviation		mm	GB/T 13542.2-2021	+2, -0	+2, -0
4	Tensile Strength	MD	MPa	GB/T 13542.2-2021	≥100	≥100
4	Tensile Strength			GB/T 13542.2-2021	TD	MPa		≥100	≥100
5	Elongation at Break	MD	%	GB/T 13542.2-2021	≥100	≥100
5	Elongation at Break			GB/T 13542.2-2021	TD	%		≥80	≥80
6	Heat Shrinkage	MD	%	GB/T 13542.2-2021	≤0.8	≤0.8
6	Heat Shrinkage			GB/T 13542.2-2021	TD	%		≤0.6	≤0.6
7	Coating Adhesion	EVA Side	-	GB/T 9286-2021	0 Class	0 Class
7		Interlayer Peeling Force			N/cm	GB/T 31034-2014	/	＞4
8	Boiling Watertreatment (boil for 24h)	Appearance	-	GB/T 17748-2016	No delamination, no bubble, no peeling	No delamination, no bubble, no peeling
8	Boiling Watertreatment (boil for 24h)			Coating Adhesion	-	GB/T 9286-2021	0 Class	/
9	Peeling Strength with EVA (Initial)	Transparent EVA	N/cm	GB/T 2790-1995	≥50	≥50
10	Peeling Strength with Silica Gel			N/cm	GB/T 1040-2006	≥10	≥10
11	Transmittance (400- 1100nm)			%	GB/T 2410-2008	≥85	≥85
12	Breakdown Voltage			KV	GB/T 13542.2-2021	≥17	≥17
13	Partial Discharge	Partial Discharge		VDC	IEC 60664-1-2007	≥1500	≥1500
14	DTI			μm	IEC TS 62788-2:2017	≥300	≥300
15	Water Vapor Transmission Rate	38℃*90RH%	g/m2•d	GB/T 21529-2008	≤0.5	≤0.5
20	Damp Heat (1000h) UV Aging (300kwh) Thermal Cycle(400) Humidity-Freeze (20) Damp Heat UV Aging (UV75kwh)			△b	IEC 61215-2021	No brittle fracture, blistering, delamination
21	Damp Heat (1000h) UV Aging (120kwh) Thermal Cycle(200) Humidity-Freeze (10)	Module Reliability Test		PCT Aging Treatment (121℃, 2 ato, 48h) Damp Heat (HD1500h) UV Aging (UV300kwh) Thermal Cycle(TC400) Humidity-Freeze (HF20) Damp Heat UV Aging (DH+UV75kwh) No new bubbles, delamination, cracking and other poor appearance, delta b≤2.0, power attenuation 5%.				IEC 61215-2021

CPPC/HPPC

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