Banking on these successful experiments, two German scientists Arthur Eichengrün and Theodore Becker further worked on soluble forms of cellulose acetate in 1903. These developments enabled another German chemist-cum-engineer Arthur Eichengrün to develop the first injection mould (spelt mold in the USA) press in 1919 that he patented two decades later.

 

The World War II lent more fillip to this technology and in 1946 American inventor James Watson Hendry designed and fabricated the first screw injection machine with better precise control over the speed of injection and the quality of articles produced. Over the next 24 years, Hendry came up with numerous versions including a gas-assisted injection moulding process, which permitted the production of complex and hollow articles that cooled quickly.

 

All these products evolved form injection molds found innumerable applications practically in every utility item under the sun such as automotive, medical, aerospace, consumer products, toys, plumbing, packaging, and construction. In particular, ever since polymer chemists formulated polyethylene terephthalate, PET in short, the packaging segment has witnessed great strides.

 

Thus today, this technique of preform moulds plays a vital role in the packaging industry and the quality of the moulded parts and end products. And this depends on the manner in which the moulds are designed and developed. In fact it is metallurgical engineering skill of a high degree that calls for a fully equipped tool room facility.

 

This has a great and direct bearing on improved design flexibility and also the strength and finish of manufactured parts alongside reducing production time, cost, weight and waste. For instance, a leading provider of PET packaging solutions boasts of one of the best tool rooms to design and fabricate such high quality preform moulds.