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Hot Runner Mould

A hot runner system is an assembly of heated components used in plastic injection molds that inject molten plastic into the cavities of the mold. By contrast, a cold runner is simply a channel formed between the two halves of the mold, for the purpose of carrying plastic from the injection molding machine nozzle to the cavities. Each time the mold opens to eject the newly formed plastic parts, the material in the runner is ejected as well, resulting in waste. A hot runner system usually includes a heated manifold and a number of heated nozzles. The main task of the manifold is to distribute the plastic entering the mold to the various nozzles which then meter it precisely to the injection points in the cavities.
Hot runners usually make the mold more expensive to manufacture and run, but allow savings by reducing plastic waste and by reducing the cycle time. (do not have to wait until the conventional runners freeze).


IML( In Mold Labelling
)/IMD( In-Mold-Decoration )
 

In-Mold-Labeling is often used in the packaging industry as an alternative to printing when design requirements call for a high degree of flexibility or else when the impression cannot be directly molded on the part. The labels are usually a printed polypropylene film with a thickness of a few tenths of a millimeter. The advantage of In-Mold-Labeling is that it integrates a downstream process directly with the injection molding process. The disadvantage is a heat reduction caused by the label and the slightly reduced cycle times that this necessitates. 
In-Mold-Decoration is a widely diversified technology concerned with the decoration of parts and is used in almost every branch of injection molding. In-Mold-Decoration can be as simple as transferring a printed impression on a flat polyester film of onto a part during or it may involve a complex back molding of textiles or preformed, three-dimensional parts.


Metal Insert Moulding

Insert molding is a highly efficient process by which metal stampings, bushings, electromechanical parts, filtration materials, and other discrete parts are combined into a single component through the injection of thermoplastic around the carefully placed parts(inserts).


Over Molding:

Overmolding is a molding process in which two or more materials are combined to produce a single part. Typically the part seamlessly binds a rigid plastic with a rubber–like elastomer. The result is a soft-touch, non–slip surface common on power tools, toothbrushes, razors, consumer electronics, medical devices and more.
Over moulding consists of placing a preformed part (or section of a part) into an injection mould and injecting a material around it. If the insert and the TPE are compatible a melt bond occurs between the two materials. The strength of this bond is affected by several factors, including interface temperature, cleanliness of the insert and the melt temperature of the TPE. 
When a specific design requires combining multiple plastic materials into one finished part, the cost-effective process known as overmolding may be the solution you need. We have rich experience for over Mold and overmolding. Overmolding is a good choice if you want to mold a rubber piece onto a piece of hard plastic. Examples of this process would include: Soft-grip pens, Caps, Disposable razor handles, Ergonomic kitchen utensils.


Gas-Assisted Injection Molding:

Gas-assisted injection molding (GAIM) is a process where an inert gas is injected into an injection molded part during the filling stage. The process utilizes compressed gas as the “packing medium”, which provides mechanical strength and dimensional stability for thick molded parts, and eliminates warpage and sink marks of products caused by pressure variation and residual stress. In GAIM, plastic products are molded under lower injection pressure with less material, which benefits companies on energy and weight savings.
For GAIM, gas control becomes the main challenge due to the distinct properties and resistances of gas and plastic flows. Moldex3D GAIM provides tools to simulate gas injected into cavities through either melt entrances or any specific gas entrances. The 3D model enables users to visualize gas penetration inside the mold cavity and further to optimize the part/mold design and process settings.

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