PP If biaxially orientated it has moderate barrier properties to oxygen and carbon dioxide. It is a good barrier to water vapour. When thermoformed it is suitable for use at temperatures up to 110(C, therefore it is suitable for use in the microwave oven. It is often micro-perforated, in this instance it is widely used to store bakery/confectionery products. It is easy to recycle. It has poor heat sealing characteristics. PP is also used to make closures. It is a very versatile packaging material.

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