distance from the medium channel to cavity surface in a mold
distance from the medium channel to cavity surface should be as equal as possible. […]
it is more effective to heat or cool slender slots of large quantity than large-sized slots in a mold
generally, it is more effective to heat or cool slender slots of large quantity than large-sized slots, which expands the range for mold temperature control. […]
some dielectric should be applied to the molds
on the other hand, in order to remove such defect as the welding mark and to produce plastic parts with high lucency, dielectric such as high temperature and high pressure steam, high pressure hot water or thermal conducting oil should be applied to the molds to raise surface temperature molds. […]
the hot and cold medium channel of molds
the hot and cold medium channel of molds is usually in hole or slot form, […]
heating with electric ring
actually, there is the third kind of the electrical heating method—heating with electric ring, wind the flat resistance wire around the mica and put the part into a tailor-made metal shell, […]
direct heating with resistance wire
I want to show another type of the electrical heating method–direct heating with resistance wire, select sound resistance wires, insert them into insulated a porcelain tube, […]
heating with electrical bar
if mold temperature is required to be above 80 Celsius degrees, a heating device shall be needed. […]
temperature of plastic molds is very important
temperature of plastic molds directly influences the molding quality and productivity of plastic parts, for thermoset plastics, […]
introduction to secondary ejector unit
Generally, plastic parts can be taken out of the mold cavity by only one ejection, yet due to their special forms, it is still difficult to take out the parts from cavity or the parts can not fall off freely from the mold upon the completion of an ejection movement. […]
introduction to a most-commonly-used ejector unit
a most-commonly-used ejector unit only play the role as ejecting tools. Sometimes, mandrils can also partake in the molding of plastic parts according to the needs thereof. Such mandrils can then be made into the same shape as certain part of the plastic parts or just as core. […]