PU stock liquid is mixed in high-pressure foaming system in certain ratio, poured on bottom color sheet.
General Introduction
The technology of Polyurethane (PU) Sanwich Panel Line is that PU stock liquid is mixed in high-pressure foaming system in certain ratio, poured on bottom color sheet which is shaped by lower forming roll, then conveyed into double conveyer with top color sheet which is shaped byupper forming roll. In the double conveyer, the PU core will form, then bind with the upper and lower sheets. After the sandwich panel is solidified, it will be cut to certain length by automatic-following band saw. PU sandwich is used widely in industrial and urban architechture, refrigeration facility and air condition tube etc. It is outstanding from many other sandwich panels with good heat-insulating property, high corrosion-resistant property and good fire-fighting property, in addition it facilitates construction. Nowadays the PU sandwich panel has great market potential and spreads more fields.
Process Data
| Line speed | Foaming Machine | PU Poured Method | Mixing Pressure | Foaming Pressure | Line Length |
| 1.5-16m/min | High pressure | Mixed head reciprocating | 10-20Mpa | Max 0.4Mpa | 100m |
Process Flow
Color Steel Coil→Pay off reel→Laminator→Foaming Roll→Pre-heating Part→High Pressure Foaming Machine→Automatic Reciprocating Jet→Double Conveyer→Carrier Roller→Cutter→Quick Feeding Roller→Stacker→Conveyer→Pakager
