INJECTION MOLDING SYSTEM

INJECTION MOLDING SYSTEM machines consist of a material hopper, an injection ram or screw-type plunger, and a heating unit.They are also known as presses, they hold the molds in which the components are shaped. Presses are rated by tonnage, which expresses the amount of clamping force that the machine can exert. This force keeps the mold closed during the injection process. PET preforms manufacturers in india  Tonnage can vary from less than 5 tons to 6000 tons, with the higher figures used in comparatively few manufacturing operations. The total clamp force needed is determined by the projected area of the part being molded. This projected area is multiplied by a clamp force of from 2 to 8 tons for each square inch of the projected areas. As a rule of thumb, 4 or 5 tons/in2 can be used for most products. If the plastic material is very stiff, it will require more injection pressure to fill the mold, thus more clamp tonnage to hold the mold closed.The required force can also be determined by the material used and the size of the part, larger parts require higher clamping force.

With INJECTION MOLDING SYSTEM, granular plastic is fed by gravity from a hopper into a heated barrel. As the granules are slowly moved forward by a screw-type plunger, the plastic is forced into a heated chamber, where it is melted. As the plunger advances, the melted plastic is forced through a nozzle that rests against the mold, allowing it to enter the mold cavity through a gate and runner system. The mold remains cold so the plastic solidifies almost as soon as the mold is filled.

The plastic INJECTION MOLDING SYSTEM industry has evolved over the years from producing combs and buttons to producing a vast array of products for many industries including automotive, medical, aerospace, consumer products, toys, plumbing, packaging, and construction Molding or moulding is the process of manufacturing by shaping pliable raw material using a rigid frame or model called a pattern.

INJECTION MOLDING SYSTEM