To mitigate the increasing cost of electricity consumption, and as this company has the factory roof unutilized, instalation of photo-voltaic pannels saves the cost of electricity, and supports as a clean renewable source of energy.
The injection molding machines in this company were of an old technology, using fixed speed motors with cold runners. This lead to generation of waste in the form of plastic carrot. Replacing the machines with modern technology, supported in reducing the specific energy consumption, through increasing the machine throughput, and improved motor efficiency. The hot runner technology eliminates the generation of plastic carrot.
This circular economy practice illustrates the economic benefit from utilizing recycled PET besides the virgin material.
A plastic containers manufacturing company, working with injection molding process, has to frequently change the mold to match each product batch and respond to customer orders. Changing the mold results in loss of production time, reflecting the time to change the mold, as well as loss of the off-specification products resulting during the start-up of each batch.
Tackling this drawback was achieved through communication with the company’s clients for long term planning in order to reduce the frequency of changeover, and increase the productivity. In parrallel, capacity building for the workers on speedy change of molds, and adjustment of process parameters reduced the off-specification products.