Plastic classification and related plastic properties processing machine recommendations.

1.Polyethylene terephthalate（PET，PETE、PET）
Uses: polyester fiber, thermoplastic resin, tape and plastic bottles, commercial beverage bottles, edible oil bottles and other plastic bottles. Refer to the bottle recycling technology, heat 60-85 °C (140-185 °F) and acid and alkali resistance, overheating and long-term use may release the plasticizer dioctyl phthalate (DEHP) [10]. However, in general, PET materials do not add plasticizers.
White or transparent (rapid cooling during processing).
Plastic distinguishing features: The bottle body is formed without seams, and there will be a dot at the bottom. Easy to burn, burning will have black smoke and aromatic sweet, melt down after burning.

2.PE，High-density polyethylene（HDPE，PEHD）
Uses: bottles, shopping bags, recycling buckets, agricultural pipes, cup holders, car barriers, fresh milk bottles, alcohol bottles, sports equipment and composite plastic wood, heat resistance 90-110 °C (194-230 °F) corrosion resistance, acid and alkali resistance, not easy to thoroughly clean residue, food containers should not be reused after cleaning.
It is white and translucent.
Plastic distinguishing features: feel like wax, bottle products are mostly opaque, plastic bag products rub or rub when rustling. Easy to burn, there is no black smoke and candle smell when burning, the flame tip is yellow and the lower end is green, and it is not extinguished when it is removed from the fire source.

3.PVC，Polyvinyl chloride（PVC/ V）
Application: pipe, wall and non-food bottle, plastic wrap, egg carton, seasoning jar, etc.
Heat resistance 60-80 °C (140-176 °F), overheating easily releases a variety of toxic additives (used to improve the performance of this type of plastic, plasticizers containing environmental hormones) Generally PVC will have a large number of plasticizers in the process. Plasticizers are now available in non-toxic formulations, so PVC can continue to be widely used in a variety of products.
It is colorless and transparent.
The bottom of the round bottle product is a straight line, white marks will appear when it is folded vigorously, and it will become iron red after long-term exposure in the sun; Poor ductility will be extinguished naturally when it leaves the fire source, and there will be a blue flame on the edge of combustion, with black smoke and scorched taste of hydrochloric acid.

4.PE，Low-density polyethylene(LDPE/PELD)
Uses: plastic bags, various containers, medicine bottles, washing bottles, piping and all kinds of molded laboratory equipment.
Heat resistance 70-90 °C (158-194 °F), corrosion resistance, acid and alkali resistance, overheating easy to produce carcinogens.
White translucent/Thin film products appear transparent.
Plastic bag products are softer and less rustling when kneading; The packaging film is easier to tear. Easy to burn, there is no black smoke and candle smell when burning, the flame tip is yellow and the lower end is green, and it is not extinguished when it is removed from the fire source.

5.PP，Polypropylene
Uses: auto parts, industrial fiber and food containers, food utensils, water cups, pudding boxes, soy milk bottles, alcohol bottles, physiological salt liquid bottles, etc.
Heat to 100-140 °C (212-284 °F), acid and alkali resistance, chemical resistance, collision resistance, high temperature resistance, in the general food handling temperature is safer.
It is white and translucent.
The hardness is high and the surface is shiny. Easy to burn, no black smoke and diesel candle smell when burning, yellow or blue flame, not extinguished when removed from the fire source, burn quickly and completely after burning.



6.PS，Polystyrene
Uses: desk accessories, self-help trays, food utensils, toys, video cassette, Yro Do bottles, ice cream containers, foam bowls, spacers and Expanded polystyrene (EPS) products, such as styrene.
Heat resistance 70-90 °C (158-194 °F), low water absorption, good stability, acid and alkali solution (such as orange juice, etc.) or high temperature is easy to release carcinogens, not applicable to alcohol, not applicable to edible oils.
It is colorless and transparent.
It can be torn by hand, and white marks appear when it is broken lightly, and there is diffusion. Easy to burn, burning will have the smell of styrene, orange yellow black smoke, removed from the fire source is not extinguished, softened after burning.



7.OTHER/O include: melamine, ABS resin (ABS), polymethyl methacrylate (PMMA, one of the acrylic), polycarbonate (PC), polylactic acid (PLA), nylon and glass fiber reinforced plastics.
Use: food utensils.

· Polycarbonate (PC) heat resistant 120-130 °C (248-266 °F), not suitable for alkali;

· Polylactic acid (PLA) heat resistant to 50 °C (122 °F);

· Acrylic (PMMA) heat resistance 70-90 °C (158-194 °F), not suitable for alcohol;

· The heat resistance of the resin is 110-130 °C (230-266 °F), but there may be doubts about the dissolution of phenol methane (bisphenol A), so it is not recommended to hold hot food；

· Polycarbonate (PC) heat resistant 120-130 °C (248-266 °F), not suitable for alkali;

· Polylactic acid (PLA) heat resistant to 50 °C (122 °F);

· Acrylic (PMMA) heat resistance 70-90 °C (158-194 °F), not suitable for alcohol;

· The heat resistance of the resin is 110-130 °C (230-266 °F), but there may be doubts about the dissolution of phenol methane (bisphenol A), so it is not recommended to hold hot food.



8. ABS
Used in food utensils.
Heat resistance 70-100 °C (158-212 °F), not suitable for alcohol.
It's beige.
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