Brief production technology introduction of hollow blow film molding non-foaming PP BOX
This technology is the most advanced in Germany Hollow Blow Molding (hollow blow molding, hollow molding) technology, the mold base is blown out at vertical film head from the top down, and maintains a high temperature of about 200 ℃ to allow the PP raw materials remain in the semi-dissolved state, and then attach and seal the left and right mold from outside toward inside, followed by injecting CO2 cooling gas from the center of the film head to quickly drop the temperature of the PP from 200 ℃ down to below 30 ℃ in 30 seconds. At this time, PP will be cooled down molding according to the mold design, then place the molded PP BOX in the environment of 80 ℃ for 10 minutes to eliminate the stress inside the materials and let the low temperature CO2 air expand to produce internal pressure, at this time, the hollow PP BOX will have the characteristics of air pressure shock absorption, the final production process is to assemble 30 times the PE foaming cushioning materials in the PP BOX, and the materials shall be laser irradiation foam molding. Do not use any foaming agent for 100% recyclable environmentally friendly materials to have a high flexibility and toughness. The LCD panel can provide better protection effect, and can be transformed into any smaller size use in the future for a lower cost and absolutely without quality risk.
New PPBOX and Tray efficiency analysis
|Analyzed Items||General Tray||SUNTOWARDTECH PPBOX|
|42” loading Amount||1||10|
|Outer Carton||Must||Not required|
|40” Container Loading Amount||4000||20000|
|Common Dimension Design||Negative||Yes|