Arccoil PE 350 Exterior Durable Polyester Coil Topcoat
A polyester coil topcoat applied at 20 to 25 microns, built on a polyester resin selected for exterior durability and pigmented with durable organic and inorganic complex pigments. It holds gloss and colour longer than Arccoil PE 310 while staying inside polyester forming latitude.
Grade Arccoil PE 350 | Range Coil and Extrusion Coatings | Technology Solvent-borne exterior-durable polyester
Technical Data Sheet
Arccoil PE 350
Issue 2026.09
1. Product description
A polyester topcoat at twenty to twenty-five microns built on a polyester resin selected for exterior durability and pigmented with durable organic and inorganic complex pigments, for roofing sheet and wall cladding in open exterior service. It holds gloss and colour longer than Arccoil PE 310 and carries the higher film build that exterior specifications usually ask for, while staying inside polyester forming latitude. Choose it over Arccoil SP where the roll former needs a softer and more formable film than a silicone-modified polyester allows.
2. Features
- Polyester resin selected for exterior durability
- Durable organic and inorganic complex pigments
- Longer gloss and colour retention than Arccoil PE 310
- Higher film build for exterior specifications
- Softer, more formable film than a silicone-modified polyester
3. Recommended uses
Roofing sheet and wall cladding in open exterior service. Chosen over Arccoil SP where the roll former needs a softer and more formable film.
Substrates. Primed galvanised steel, zinc-aluminium alloy coated steel and aluminium strip.
4. Typical properties
| Property | Typical value | Method |
|---|---|---|
| Technology | Solvent-borne exterior-durable polyester | Formulation |
| Dry film thickness | 20 to 25 microns over primer | EN 13523-1; ASTM D7091 for the magnetic induction or eddy current check on the line |
| Peak metal temperature at oven exit | 224 to 241 degrees Celsius | Strip-attached thermocouple or peak metal temperature recorder read on the line; a line measurement, as there is no dedicated published test standard |
| Specular gloss, 60 degrees | 30 to 80 gloss units, set to the specification | ISO 2813, ASTM D523, EN 13523-2 |
| Colour difference against the approved panel | Delta E commonly specified at not more than 1.0 for solid colours | ASTM D2244, EN 13523-3 |
| T-bend flexibility on 0.5 mm strip, no cracking with a tape pull across the bend | 1T to 2T | EN 13523-7, ASTM D4145 |
| Pencil hardness | F to 2H | EN 13523-4, ASTM D3363 |
| Solvent resistance, methyl ethyl ketone double rubs | 50 to 100 double rubs without exposure of the primer, used as a cure check on the line | EN 13523-11, ASTM D5402 |
| Accelerated ultraviolet exposure, UV-A 340 lamps with condensation | 1000 to 2000 hours, with gloss retention and colour change agreed for the grade; cabinet hours rank systems and do not convert into years in service | EN 13523-10, ISO 16474-3, ASTM G154 |
| Neutral salt spray resistance, finished system | 500 to 1000 hours with creep from the scribe not more than 2 mm and no field blistering, set by the system chemistry and film build | ISO 9227, ASTM B117, EN 13523-8 |
Typical values, not a specification. Values for each batch are given on its Certificate of Analysis.
5. Application
| Parameter | Guidance |
|---|---|
| Application method | Roll coating at the finish coater, front face, with the backing coat applied to the reverse in the same pass |
| Primer | Arccoil PR 210 at 5 to 7 microns, cured and quenched before the finish coater |
| Viscosity adjustment | Hold the supply at the agreed viscosity and coater temperature; correct with the supplied thinner only, to the supplied ratio |
| Applied film | 20 to 25 microns dry; check thickness at both edges and the centre of the strip |
| Cure | 224 to 241 degrees Celsius peak metal temperature, then quench and recoil; the higher film build may require a reduction in line speed to hold the peak metal temperature, but do not run above the window, as over-cure embrittles a polyester and shows as a failed T-bend |
| Forming | Run a forming trial on the actual roll former before committing a production coil, and judge adhesion after forming rather than on the flat panel |
Process. Roll coated to twenty to twenty-five microns dry over primer, cured to a peak metal temperature of 224 to 241 degrees Celsius, quenched and recoiled. The higher film build may require a reduction in line speed to hold the peak metal temperature.
6. Storage and handling
Store in the original, tightly closed containers in a cool, dry, covered area away from direct sunlight and heat, and stir to a uniform consistency before use. Shelf life is stated on the label and Certificate of Analysis. Handle and use the product in line with its Safety Data Sheet.
7. Safety and regulatory information
Read the Safety Data Sheet before use. Safety Data Sheets and regulatory declarations are issued by our technical centre against the product and batch supplied, so they are sent on request rather than published. Request a Safety Data Sheet or declaration.
This Technical Data Sheet is published for on-screen reference. The information is given in good faith from laboratory and application experience and describes typical values; it is not a specification and does not replace a trial on your own substrate and line. Arctic Materials may revise this sheet without notice. Issue 2026.09.
Technical Data Sheets on this site are for on-screen viewing. For a controlled copy, write to tech@arcticmaterials.com.
Other grades in this range
Need a Safety Data Sheet, a regulatory declaration or a grade specified to your line? Contact our technical centre.