Polyolefines
Polyolefines are plastics based on pure hydrocarbons and thus exhibit very small changes to the fossil oil and gas fractions. The best-known examples are the polyethylenes and the polypropylenes, but there are others such as polybutene (polybutylene). Polyethylenes are inexpensive and relatively environmentally friendly plastics, since their raw materials are easy to recover and since they can be handled similarly to fossil fuels in terms of energy recycling with a comparable calorific value. Polyolefines are non-polar, have a low surface energy and must be activated before bonding, coating and printing, preferably by plasma activation in the oxygen plasma.