PMT-Stable at 230–240°C
Coil lacquers endure the harshest thermal profiles in the coatings industry. HMMAT 200 Series synthetic amorphous silica remains thermally inert through the entire peak metal temperature (PMT) window of 230–240°C on modern NCCA lines, with zero yellowing, zero efficiency loss, and batch-to-batch gloss repeatability within ±1 GU.
Scratch Resistance Built for Recoiling
High-speed recoiling subjects the cured film to continuous metal-to-metal contact. The organic wax treatment on HMMAT 200 particles acts as a boundary lubricant at the film surface, redistributing shear stress and preventing micro-ploughing. OEM coil paint brands achieve consistent scratch-resistance grades without raising pigment volume concentration or compromising T-bend flexibility.
T-Bend Flexibility — No Micro-Cracking
Narrow particle size distribution (d50 4–9.5 µm) eliminates stress concentrations in the film matrix. Coil lacquers built with HMMAT 200 routinely pass T-1 and T-2 bend tests unmodified, supporting downstream post-forming, roll forming, and deep-drawing operations with no rework.
FCL Economics for High-Volume Lines
OEM coil paint manufacturers running continuous lines demand supply security, not spot-lot variability. SEMITECH ships full container loads (20 MT FCL) with locked specification windows, private-label packaging, and multi-port FOB options — Shanghai, Ningbo, or Tianjin — eliminating the per-drum surcharges common to smaller intermediary supply.
OEM Supply Capabilities
- Private-Label Packaging: 25 kg kraft paper bags, big-bags (500/1000 kg), custom print with your brand name, colour, and language
- Minimum Order: 1 FCL (20 MT), scaling to multi-FCL annual contracts
- Certifications: ISO 9001 + REACH + RoHS + NCCA-compatible QC documentation
- Lead Time: 25–35 days first run, 15–20 days repeat orders
- Multi-Port: Shanghai, Ningbo, Tianjin FOB
Grade Selector for Coil Coatings
HMMAT 200 Series covers the full spectrum of coil binder systems. Sub-grade selection is guided by target gloss level, binder type, and DFT.
| Grade | d50 / Treatment | DFT Range | Application Fit |
|---|---|---|---|
| HMMAT 240 | 4 µm / wax | 10–20 µm | Thin-film PE coil, high clarity required |
| HMMAT 255 | 5.5 µm / wax | 15–30 µm | Standard PE / polyester coil, balanced scratch + clarity |
| HMMAT 270 | 7 µm / wax | 20–40 µm | PVDF coil, maximum scratch resistance |
| HMMAT 285 | 9.5 µm / wax | 25–50 µm | Heavy-DFT polyester coil, deepest matte |
Technical FAQ
OEM coil coating formulation challenges and HMMAT performance answers.
+What HMMAT grade is recommended for PVDF coil coating systems?
The HMMAT 255 and HMMAT 270 sub-grades within the HMMAT 200 Series are specifically optimised for fluoropolymer-based PVDF systems. Their wax treatment delivers exceptional scratch resistance at PMT 230–240°C while maintaining the high clarity demanded by architectural facade panels.
+How does wax treatment in HMMAT 200 improve scratch resistance on coil lines?
The organic wax coating on HMMAT 200 particles acts as a boundary lubricant at the coating surface. During high-speed recoiling, metal-to-coating contact is inevitable; the wax layer redistributes shear stress and prevents micro-ploughing, giving measurably better scratch resistance versus untreated grades at equivalent loadings.
+Can HMMAT silica withstand Peak Metal Temperatures above 230°C without yellowing?
Yes. SEMITECH synthetic amorphous silica is produced via controlled gel synthesis and is thermally inert above 600°C in isolation. The wax modification on HMMAT 200 is selected for stability through the PMT 230–240°C baking window typical of NCCA polyester and PVDF lines, with no colour shift or loss of matting efficiency observed.
+What T-bend performance can OEM formulators expect with HMMAT 200?
Coil lacquers formulated with HMMAT 200 Series routinely pass T-1 to T-2 bend tests without film cracking. The narrow particle size distribution (d50 4–9.5 µm) avoids stress concentrations in the film matrix, preserving elasticity during post-forming operations such as roll forming and deep drawing.
+What is the minimum OEM order quantity and what documentation is provided?
Minimum order is 1 FCL (approximately 20 MT). Each shipment includes Certificate of Analysis (CoA), Safety Data Sheet (SDS/MSDS), REACH compliance letter, and batch-traceable QC report. Private-label packaging with your brand name, logo, and language is available from the first FCL order.
Recommended Coil Coating Solution
For high-speed NCCA coil lines running PE, PVDF, or polyester baking systems, we recommend the HMMAT 200 Series.
SEMITECH matrix · co-purchase