The gate channel in the plastic injection mold serves to convey the melt coming from thenozzle of the injection molding machine to the cavity with the lowest possible pressureand heat loss, in shortest possible time and without thermal deg…

Vertical Injection Molding Process What distinguishes a micro injection process from a “normal” Vertical Injection Molding process? Except for parts or structure sizes, the process is almost identical. Oen,even the same procedures are appl…

ENGINEERING AND DESIGN ENGINEERING knowledge is not only of vast importance in the plastics industry but an essential foundation for those wishing to properly assume positions of responsibility. The plant manager must thoroughly understand…

Injection Molding Process Injection molding is a typical process for the production of parts molded in largevolumes, frequently used in high mass production. The associated mold costs arein comparison to other processes relatively high [1 …

Machining Marks For maximum fatigue life，all bored and drilled holes should have a smooth finish, without any machining witness marks showing. Special drills are available that impart a smoother finish than a twist drill where this is nec…

ECONOMIC CONSIDERATIONS In order to evaluate the extent of an installation with which to proceed, the following points should be considered: an analysis of the plastic molding products currently being produced, the markets, the present cos…

Nylons Nylon is the generic term for a class of polyamides containing repeating amide groups (—CONH —.), connected by methylene units (—CH2— ) in the polymer structure. There are several types of polyamides, including the ureas, melamines,…

Advantages Plastics are light in weight, but for their weight, they are prodigiouslystrong. They can be changed into end products by relatively simple means,and they have a good appearance and a good feel. The advantages in theuse of plast…

injection molding machines Most injection molding machines use a single electric motor to drive the hydraulic system for the entire machine. One inherent advantage of the molding cycle is that the power requirement for the hydraulic system…