Steam flushing from top to bottom to exhaust the air out of the steam chamber

If there is a thin flange in the mold, the steam is best to pass through the flange so that the raw materials sandwiched in the flange can also be steamed; Pressure maintenance: After the horizontal steam is passed, it needs to go through the pressure maintenance or double-sided steaming process.epp core material foam plastics'>the molding process of core material foam plastics: Before passing the steam After that, the temperature inside the mold will generally reach 140°C.

At this time, close the condensate China cashem valve on one side and open the steam inlet valve. During this process, open the steam inlet valve and close the condensate drain valve to make the pressure gradually reach the peak value. Demolding. Three steps to pass the steam into the mold: steam flushing: steam flushing from top to bottom to exhaust the air out of the steam chamber, and the condensate flows out.

At the same time, close the steam inlet valve on the opposite side to condense Open the water valve so that the steam is ejected from the opposite direction. Generally, the drying temperature is set to 60℃～80℃, and the drying room should be kept dry and well ventilated. Core material foam, core material foam manufacturer, core material foam price Pay attention to the use of PMI foam aluminum sandwich material in building explosion-proof when using foam cold press at low temperature in winter. With the release of the internal pressure and the temperature lowering to a permitted release The mold temperature can be used for demolding operation.

Cooling. During this process, open the upper steam inlet valve and the lower condensate drain valve; Horizontal steam: make the steam sweep from one side of the steam chamber to the raw material, penetrate the raw material and reach the other side. In order to ensure the smooth demolding of the core material foam, the mold temperature must be reduced to 70°C. Drying and shaping. Close the mold and preheat the mold so that the surface temperature of the mold reaches the melting point; feed, and the raw materials enter the mold through the material gun.