Polyester Film For FRP Panel/Pipes/Tanks
Polyester film/ Mylar, is made of polyethylene glycol terephthalate(PET), one kind of film which manufactured via biaxially oriented(BOPET). It can be used in various fields: FRP panel, FRP pipe & tank, packages,…
Application One: FRP Panel
Brief Introduction
According to the different requirements of the customers, the polyester film can be divided into
film with corona treatment and film without corona treatment. The polyester film with corona
treatment is mainly for some special usage and the film will be kept on the FRP panel to protect
the panel or strengthen the property of the panel (UV resistant etc.).The normal thickness used
for FRP panel are 19um, 23um, 36um etc. and the width can be decided by the customers. The
roll length of the polyester film is adjustable.
Technical Specification (19um)
| Properties for control reports | Accepted Standard | |
| Standard No. | Standard Value | |
| Thickness Tolerance (%) | ASTM- D374 | 19+/-10% |
| Tensile Strength md (mpa) |
ASTM-D882 | ≥150 |
| Tensile Strength td(mpa) | ≥150 | |
| Elongation md (%) | ≥60 | |
| Elongation td (%) | ≥60 | |
| Heat Shrinkage md(150 C、30min) | ASTM-D1204 | ≤3.0 |
| Heat Shrinkage td(150C,30M IN) | ≤3.0 | |
| Haze (%) | ASTM-D1003 | ≤8.0 |
| Gloss | ASTM-D2457 | ≥100 |
| Melting Point(C) | ≥256 | |
Package
Packed with pallets, 4 rolls per pallet. We can make the diameter of the inner core to be 3 inch or 6 inch according to the requirement of the customers.
Application Two: FRP Pipe& tank
Polyester film used in FRP pipe manufacturing is biaxially oriented film without corona treatment. The main function of the polyester film is for the demoulding of the FRP pipe& tank. The normal thickness used for FRP panel are 19um, 23um, 25um, 36um etc. and the width are mainly 50mm,100mm,150mm and 200mm for du-helical filament winding process and the width are mainly 45mm,50mm for continuous filament winding process. The roll length of the polyester film is adjustable.
Technical Specification (23um)
| Properties for control reports | Standard No. | Average Value | |
| Appearance | White, side whipstitch good, no broken woven, untained. | ||
| Thickness um | ASTM D374 | 23~23.10 | |
| Tensile Strength (MPa) | ASTM D882 | MD | 209 |
| ASTM D882 | TD | 267 | |
| Modulus (MPa) | ASTM D882 | MD | 4543 |
| ASTM D882 | TD | 4923 | |
| Heat Shrinkage (%) | ASTM D 1204 150C/30 m in | MD | 1.2 |
| TD | 0 | ||
| Haze (%) | ASTM D1003 | 2.49 | |
| Gloss (45 Degree) | ASTM D2457 | 129.800 | |
| C.O.F(IN/OUT) (µs/µk) | ASTM D1894E | 0.50/0.42 | |
| Density(kg/m3) | 1397.00 | 1397.00 | |
| Wetting Tension (mN/m) | ASTM D2578 | 40.00 | |
Package
Packed with pallets. We can make the diameter of the inner core to be 3 inch or 6 inch according to the requirement of the customers. Normally the diameter of the inner core we make is 6 inch.
Post time: Feb-23-2023
