OUR MOSTE COMMON PLASTICS
A plastic material is usually composed of a so-called polymer and various additives. A polymer composed of a long chain of like molecules, monomers, for example ethylene, styrene or vinyl chloride. The additives, such as plasticizers, stabilizers, antistatic agents and dyes, are used to affect the properties of the plastic. Additives are also used in the plastic to aid in the preparation.
Polyethylene is the most common household plastic today. It is used in plastic bags, carrier bags, plastic film and the soft cans and buckets. The release moisture through bad but the aromas and gases pass easily through the plastic.
Polypropylene is used for bread packaging and cans, but also occurs in microwave packaging. This plastic can withstand higher temperatures than polyethylene but otherwise have similar characteristics.
Polystyrene is present in disposable tableware, yogurt containers and disposable containers for salads. It is also used in the "bloated" expanded form - that foam or Styrofoam - in trays for meat and charcuterie. This plastic has relatively poor moisture density.
Polyvinyl Chloride (PVC)
PVC is used mainly as a plastic film for meat, fruit and vegetables at the store wrap and to some extent also in bottles for water and other beverages.
Polyester (polyethylene terephthalate, PET)
PET is mainly used in different bottles for beverages and liquid. PET with other physical and chemical properties used in microwave packaging and packaging that are intended for use in the oven as they can tolerate heat well. PET is gas-tight and relatively dense aroma.
Polycarbonate is an extremely shock and impact resistant plastic. It is used among other things to products that need to be durable, transparent and withstand high heat baby bottles or reuse bottles for example drinking water.
Polyamide is often used in various kitchen utensils, such as black ladles, whisks and paste tools, to be able to withstand temperatures up to 200 ° C.
Polytetrafluoroethylene (PTFE, often called Teflon)
Teflon is used as coating pans, frying pans and plates or molds for baking. The material is used because it can withstand heat up to 250-300 ° C and is resistant to chemical attack. When roasting temperature is about 200 ° C.
Digit in the triangle from a recycling point of view 01 02 03 04 05 06 07 Plastics Plastic PET PVC PE-HD PE-LD PP PS O * * other plastics; for example, polycarbonate (PC)
Today, all authorized substances for the manufacture of plastics regulated in the EU acquis. For many of these substances are specific limits, some very low. In the EU today must all food packaging plastic meet the requirements for migration, that is, how much of the substance that may wander over to the food. Some substances, such as vinyl chloride and acrylonitrile, may not be in food at all.
There are very few return products on the market today that are used in direct contact with food, but one example is PET made entirely of recycled materials. PET with a center layer of recycled PET, however, has long existed. Recycled PET has been shown to meet the requirements set by the EU on new material.
Source: National Food Administration website www.slv.se