Pulp Molding Zero Angle Outside Package for High Grade Products

       Nowadays people start to seek the paper package to replace the Styrofoam and plastic material packages. Yes, the paper pulp packages are the good choice due to the environmental protection and the good performance.

        But the zero angle products still challenge the pulp molding industry. Generally speaking, the zero angel products mainly refer to the high grade outside packages, like telephone box, make-up box, jewellery box and so on.

       Since these products are for outside packages, it requires the smooth and clean surface and strong strength. These can be done by the thermoforming machines, which mean drying in the molds. There are hot press molds in the forming machine. Please see the machines on below picture.

       The biggest difficulty is the demoulding process. The zero angel products have no any slope. After hot pressed, the dry product will be stuck to the hot press molds. Even if try to increase the vacuum, it can’t drop down smoothly. Besides, increasing the vacuum capacity is energy consuming in the long run. So making some modification on the molds is a better choice. Some trial telephone box tests have been made, the test results are satisfactory. Please see the boxes on below picture.