How to identify the plastic material easily?
PP material features: soft and tough material, environmentally friendly, non-toxic, relatively high temperature resistance, poor plasticity, blister difficulty, lack of luster on the surface, showing a dumb color.
Sensory identification: This product is white and transparent. Compared with LDPE, it has higher transparency and rubbing.
Combustion identification: when burning, the flame is yellow and blue below. It smells like oil, melted and dripped. There is no black smoke when burning.
PET material characteristics: this material is environment-friendly material, the hardness of the material is good, the transparency is strong, the material surface is bright.
Sensory identification: This product is white and transparent, feels hard, and has a sound when kneading. It looks like PP.
Combustion identification: there are black smoke in the combustion, the flame has the phenomenon of jumping fire, the surface of the material is black carbonized after burning, and the finger kneads the black carbon after burning, and the carbide is powdery.
PVC material features: plastic packaging is one of the most used materials, moderate price, strong toughness, good molding, if encountered in low temperature weather will become brittle, easy to break.
Sensory identification: the appearance is very EVA but elastic.
Combustion identification: black smoke is emitted from combustion, extinguished from fire, black on combustion surface and no molten drop phenomenon.
PP+PET material characteristics: this material is a composite material with good surface resistance, wear resistance and good plasticity.
Sensory identification: appearance is like PP, transparency is very high, when kneading, the sound is greater than PP.
Combustion identification: there are black smoke when burning, flames have jump fire phenomenon, and the surface of combustion is black carbonization.
PE+PP copolymer: low density, medium density, high density polyethylene and soft handle. This material is less used.
Sensory identification: compared with LDPE, this product is far more transparent than LDPE. There is no difference between hand feeling and LDPE. Tear test is very like PP film, and its quality is transparent and pure white.
Combustion identification: when the product burns, the flame is all yellow, melted and dripped, without black smoke, and the smell is like oil.