Process of Injection Molding

May 7, 2018

industry

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Injection molding is a technique used to manufacture parts of a product or whole product by fabricating the plastic. The process in simple terms can be laid down as a process where the molten form of a metal or plastic raw material gets injected into a mold and when solidified is taken out of it to produce a product of the same specifications as the mold. But everything is not that simple as it looks. Someone who wants to take up injection molding as a business needs to understand the whole process in great detail. Let us discuss what the process of injection molding is all about. The process is not only quick and efficient, but cost effective too.

Closing the Mold: The first step of the process is closing the mold. Also known as clamping, the closing of the mold leads to tight grip of the plates over the structure of the mold so that the parts are stuck together with great connection. If not connected properly, the molten plastic material can run through the spaces left and this could lead to deformity of the product manufactured. Wastage of raw material will also be there then.

Injection of the Plastic: Now comes the part of the insertion of the molten plastic material into the already assembled mold. The plastic which is melted from the pellet mold form is then injected with pressure into the mold so that it takes proper shape and no bubbles are formed in the product. The standardized product making is the motto of every company and customers also buy products which offer quality.

Holding of the mold: the next step in the process is holding the mold properly in the right position so that the plastic takes proper form. Once the injection step is done, the mold undergoes pressure just to ensure that all the parts are filled properly. This is known as dwelling. After the dwelling is done, the mold is then set out to cool down so that the parts start becoming solid and can be taken out once fully solidified.

The final stage of ejection: after a standard period of time, the moving platen is given command to move away from the fixed part and this opens the mold. The mold once opened is separated from the product by tapping of a rod or air blast. The product then is ready and can be sent for further making of the product or packaging if ready.

The process of plastic injection molding is too simple to understand, but while executing, the tips included in the above article must be adhered to. Problems while designing or giving commands during manufacturing can lead to a number of problems which could mean inefficiency. This must not be allowed to walk in and the individuals who are responsible for production at site must be trained well as the process is the heart of the company. Only when the product manufactured is of a superior quality can the customers be convinced to purchase it. Quality matters and so does the processing!