The foldable crate of Sino Holdings Group is the plastic folding crate that has been developed continuously by our R&D department for a long time. That’s why the SHG foldable crate is famous for its unique structure.
Raw material of foldable crate
SHG foldable crate is molded with special HDPE or PP material to achieve highly durability. The melting speed of special material is 3.6-4.5 g/10 minutes, the tension is over 25 Pa, the tensile strength is over 60% and the contraction force is over 40 Pa.
Normally HDPE material has little branching, but the special new material used for SHG folding crates gives it stronger intermolecular forces and tensile strength than LDPE. Its surface is harder and more transparent, and it can withstand higher temperature (120 °C/ 248 °F for short periods, 110 °C /230 °F continuously), in order to reach the requirement of durability. It should be noted that HDPE, unlike polypropylene, cannot withstand the general high pressure.
Storage room saving of SHG foldable crate
Most of plastic boxes, especially for large crates, it takes much space to store them and it’s inconvenient to carry and transport them. But foldable crates, because of its foldability, can reduce the space by 25% - 50% than ordinary boxes, which finally reduces transportation and storage costs by about 50% - 75%.
Rapid heat cycle molding technology for SHG foldable crates
SHG applies rapid heat cycle molding technology to ensure the durability of foldable crates. As said above, SHG uses special HDPE material with low melt flow index, under the usual injection molding technology, there would be defects such as flash, non-uniform wall thickness, insufficient weight, short filling and etc., which would affect the life of foldable crates. While the rapid heat cycle molding technology can solve these problems perfectly with a considerable competitive price.
Detection of SHG foldable crates
SHG has a rigorous quality control on plastic foldable crates production. There is a full complete inspection standard for foldable crate to keep every foldable crate qualified. Which includes but not be limited to dimension control, stacking capacity, drop test, weight control and durability testing.