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Showing posts from August, 2022

PET Flakes Crystallizer and Dryer

  PET is highly hygroscopic and absorbs moisture from the atmosphere. Tiny amounts of moisture can hydrolyse PET within the melt part, reducing molecular weight. PET should be dry just prior to processing, and amorphous PET needs   crystallization   prior to drying so that the particles don’t stick together as they’re going through glass transition. Hydrolysis can occur due to moisture and this often can be seen as a reduction in the IV (Intrinsic Viscosity) of the product. PET is “semi-crystalline”. When the IV is reduced, the bottles are more brittle and tend to fail at the “gate” (injection point) during blowing and filling. It is very possible that due to the initial  moisture level  in the resin, and the amount removed during vacuum that a significant amount of moisture still remains as it is reaching its melt phase in the extruder. In its “crystalline” state it has both crystalline and amorphous portions in its molecular structure. The crystalline portion develops where the molec

How to compost food waste and use as organic fertilize

  Composting is the natural process of decomposition and recycling of organic material into a humus-rich soil amendment known as compost. Food waste is composed of organic matter which can be used for composting to make fertilizer. It is an effective and eco-friendly way of disposing of food waste in your kitchen. By using leftovers and other food waste, you can convert these smelly items from the kitchen waste into a highly organic product rich in nutrients that you can use to grow vegetables or flowers with it. Things like paper, twigs, and leaves are rich in carbon while grass, coffee, and tea grounds, fruit, and vegetables are rich in nitrogen. The proper mixture is key to good compost. Why use food waste as fertilizer? Food waste is a major challenge in the present world, tons of food is thrown away in the garbage. We could use all the food waste and prepare compost out of them which can be used as organic fertilizer. This way we save the earth from the pollution caused by food wa