NEW TYPE DOUBLE BACKER DF-12
NEW TYPE DOUBLE BACKER
A thin hot-plate double backer built for high-speed corrugated board lines, engineered for efficient heat transfer, uniform board bonding, and stable long-run operation.
20 pcs
Thin Hot Plates
3
Steam Pressure Zones
15″
Heating Frame Channel Steel
12″
Cooling Frame Channel Steel
BUILT FOR CONSISTENT BONDING AT PRODUCTION SPEED
The DF-12 is Hsieh Hsu’s new-generation thin hot plate double backer, designed to sit at the heart of the wet end of a corrugated board line. It bonds the liner to the pre-glued single-face web under controlled heat and pressure, then stabilizes the board through a dedicated cooling zone before it moves on to the dry end.
The heating section uses twenty ground-polished, chrome-plated thin hot plates arranged along a 15″ channel-steel main frame, with steam pressure split across three independently managed zones. Press-shoe height is adjusted hydraulically rather than manually, so operators can respond to board thickness or grade changes without stopping the line. The cooling section that follows uses a dual-roller weight and guide system to flatten and stabilize the board before slitting and cut-off.
Every DF-12 is engineered and assembled by Hsieh Hsu, a corrugated machinery manufacturer that has built complete production lines since 1980, with a manufacturing and service network spanning Taiwan, mainland China, Vietnam, and India.
SYSTEM ARCHITECTURE
The DF-12 is built as two engineered sections working in sequence — a heating section that fuses the board, and a cooling section that locks the bond in before the board leaves the wet end.
A. HEATING SECTION
| Hot plate type | Thin-type hot plate, steel |
| Hot plate dimensions | 120 mm (H) × 600 mm (W) × 2650 mm (L) |
| Hot plate quantity | 20 pcs |
| Hot plate surface finish | Ground polished, chromed |
| Press shoe / air press adjustment | Hydraulic device, 1 unit |
| Steam pressure control | 3 sections |
| Upper canvas belt adjustor | Right / left, 1 set |
| Main frame material | 15″ channel steel |
| Housing | New designed appearance |
B. COOLING SECTION
| Upper weight rollers | Ø70 mm, steel — 23 pcs |
| Lower guide rollers | Ø88 mm, steel — 23 pcs |
| Upper canvas belt tension adjustor | 2 sets |
| Lower canvas belt tension controller | 1 set |
| Main frame material | 12″ channel steel |
NEW TYPE DOUBLE BACKER GALLERY
WHERE THE DF-12 FITS ON YOUR LINE
Briefly and concisely explainAs a wet-end component, the DF-12 is installed downstream of the single facer and glue unit on new corrugated board lines, or specified as an upgrade when rebuilding an existing double backer station.
what you do for your audience.
New corrugated line builds
Double backer retrofits
Packaging board plants
Heavy-duty / triple-wall lines
