1. ON ORIGIN:
• Which plastics?
Synthetic products from natural resources like oil, gas, coal and salt.
• If you were born?
In 1907, the New York chemist Leo Baekeland unveiled the first man-made plastic: bakelite.
In 1940, the industrialization and marketing of plastics begin.
1976, the plastics materials already the most widely used worldwide.
• And in Spain?
Polyvinyl chloride, PVC: In 1953, the production of plastics in our country begins.
• Are plastics depend on oil?
The starting material of plastic is oil. It naphtha and from this fraction distilled raw materials of these materials are obtained.
It is important to know that only 4% of world oil production is expected to make plastics. 6% goes to other industries.
And the remaining 90% is devoted to heating oil and locomotion.
• What with plastic when oil had just?
Nothing important for a world that would die of cold and immobility.
• How many families of plastics are there?
At present there are about 30 families of plastics are sold with their corresponding formulas.
Among the most used, include polyvinyl chloride (PVC), high density polyethylene (HDPE), low density polyethylene (LDPE), polypropylene (PP), polystyrene (PS) and polyethylene terephthalate (PET).
But it should also be mentioned polyurethanes, polyesters, polyamides, ABS, SAN, polycarbonate, phenol resins, amino resins, alkyd resins, acrylic resins, polyacetals ...
2. ON its manufacture:
• As plastic materials?
The production of plastics is a process of polymerization: a chemical reaction in which one or more kinds of -monómeros- to link small molecules with each other to other much bigger molecules -polímeros- in which the structure of the repeat primitive. Monomers are the "raw materials", which we mentioned above, which are made from petroleum.
They come in different forms, but more frequent mode -granza- granules, powders, pastes, etc.
Companies to produce the polymers, ie called plastic materials producer.
• As objects to be?
Once created, plastics, polymers, their transformation into objects, objects or products in general, for use by humans is carried out.
This transform is used by processes such as extrusion, injection molding or compression molding in the "plasticity" and takes place by temperature, pressure, and molded products obtained, for domestic or industrial use.
Companies that are transforming plastic into usable objects called professional processing.
• How many plastics companies in Spain there?
More than 100 manufacturers and 4115 processors.
The first employs about 10,000 people and the second around 85,000.
Besides these, there are about a hundred of recycling.