Evers Fachlexikon
Packaging Regulations
The 5th amendment to the packaging regulations comes into force on 01.01.2009. The aim is to licence all packaging which reaches private consumers in a dual system and to therefore secure collection of used sales packaging close to households....
Photocell
A photocell is a previously frequently used detection and measuring device for light. It consists of two electrodes in an evacuated glass vessel and is counted as being an electron tube (valve) in a broad sense.
Polyethylene (PE)
Polyethylene (abbreviation PE, previously called polyethylene, occasionally polyethene) is a thermoplastic polymer produced by polymerisation of ethene ...
Polyethylene terephthalate (PET)
Polyethylene terephthalate (abbreviation PET) is a thermoplastic polymer in the polyester family produced by polycondensation. PET has diverse uses and, among other things, is used to produce plastic bottles (PET bottle), films and textile fibres.
Polypropylene (PP)
Polypropylene (abbreviation PP, occasionally also called polypropene) is a partially crystalline thermoplastic and belongs to the polyolefins group. Polypropylene is produced by the polymerisation of the monomer propene (propylene) with the help of catalysts.
Polystyrene (PS)
Polystyrene (abbreviation PS, other names: styrene (hard form) is a transparent, amorphous or partially crystalline thermoplastic. Amorphous polystyrene is used worldwide in many areas of everyday life.
Polyurethanes (PU)
Polyurethanes (PU, DIN abbreviation: PUR) are polymers or synthetic resins which are created from the polyaddition reaction of diolen or polyolene with polyisocyanates. The urethane group is characteristic for polyurethanes.
Polyvinyl chloride (PVC)
Polyvinyl chloride is an amorphous thermoplastic polymer. PVC (acronym) is hard and brittle and does not become soft, plastic and suitable for technical applications until plasticisers and stabilisers are added to it.
Pulling force
In physics (statics), pulling force (tensile force) is the term, based on language in everyday usage to describe a force which pulls something ( a mechanical body), i.e. acts on the body on the generator of the force. The SI unit of force is defined as the Newton after the scientist Sir Isaac Newton.