All the effective technique of controlling the quality and the expense of an item is based greatly on the uniformity with the method employed to produce that item. Uniformity are only able to be accomplished by securely…
Among the major advantages of hot-runner molds is the material savings that result from eliminating the runner system. In essence, hot-runner systems are extensions of the plastic injection machine’s nozzle through which the plastic melt flows straight into the cavities.…
Plastic Mould Ejection Injection moulding compounds exhibit a certain amount of shrinkage，i.e., in a cooled condition, the volume is somewhat smaller than in a heated condition. If parts with accurate dimensions are needed, allowances must be made for this shrinkage…
Mold surface treatment technology In addition to the reasonable cooperation of the steel strength and toughness, its surface properties are critical to the work performance and service life of the mold. These surface properties refer to: wear resistance, corrosion…
Undercuts Modern molding practice dictates certain principles of design which should be observed if molded articles are to be produced successfully. Most elementary is the fact that the piece must be easily removed from the mold after it has been…
Flash Lines Flash in injection molding refers to excess plastic material that is extruded beyond the boundaries of the intended part. This excess material can be found in small gaps or seams between different sections of the mold or along…
Scope There is no easy solution to the problems encountered in designing molded articles of plastics. The design will often hinge on what is the best process of molding for the piece in question. The selection of the molding process…
Heating The correct heating of hot runner manifold systems is very important and is crucial to the success of the tool in production. There must be good heat transfer between the heater and the surface being heated or the…
opportunities for the production design engineer Production design work in both the areas of product and process design will provide a rewarding lifetime job. The engineer knows that his work will make possible better products for more people at less…
systematic procedure design for plastic molding The road taken by the creative thinker in developing new injection molded parts is long, expensive, and difficult, beset with many detours and byways. A systematic procedure for the development of a product will reduce…
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