Yangzhou Xinfly teaches you how to distinguish the raw materials of cosmetic plastic tubes.

1. cosmetic plastic tube PP=== 100% glue, polypropylene

Light weight, tough, easy to process, good heat resistance. High impact strength at room temperature, high tensile strength, good rigidity, corrosion, difficult painting, folding resistance up to millions of times, excellent electrical function and high shrinkage. PPP。 E。 PA is soft and bendable, with hard wax-like touch and satiny feeling, and soft horny sound when knocking, while PS. ABS。 PC。 PMMA, non-malleable, has a loud knocking sound. The burning phenomenon of PP is roughly the same as that of PE, and there may be a small amount of black haze. After the flame subsides, it smells like kerosene, which is non-toxic.

2, cosmetics plastic tube LDPE=== soft rubber, high pressure low density polyethylene

HDPE=== hard soft rubber, low pressure high density polyethylene

VHDPE=== ultra-hard soft rubber, ultra-high pressure polyethylene

Light and tough. Easy to process, good heat resistance, good toughness at low temperature, hard and impervious, but good in abrasiveness, PE is flammable, and can still be burned after leaving the fire. When burning, the flame is yellow and blue, with little black annihilation. Near the flame, the plastic melts and drips, which is similar to the flow of candles. After the flame subsides, there is obvious Bai La burning smell, and there is no toxic PE. Pp has smaller specific gravity than water and floats in water. Most other plastics have a higher specific gravity than water and sink in water.

3. Cosmetic plastic tube PC=== bulletproof adhesive, polycarbonate

Colorless and bright, with the first impact strength of plastic, excellent electrical function, anti-aging, small shrinkage, and stable product size. PC incineration is close to PS, but the incineration speed is slow. After leaving the fire, it will extinguish slowly. The flame is yellow, with black carbon bundles. When burning, it melts and bubbles, and when it subsides, it will smell like flowers and fruits.

4. Cosmetic plastic tube PMMA=== PMMA (sub-strength)

Poly (methyl methacrylate) has excellent transparency, can be dyed in various colors, is brittle and easy to crack, has poor hardness and is easy to rub. Good leakage resistance. Both PMMA and PS have bright primary colors, but the burning conditions are different. PMMA has no carbon beam to escape, while PS does. When PMMA is burned, the flame is light blue, the top is white, and it melts and bubbles when burned, declaring strong odor of flowers and fruits and rotten vegetables, which is poisonous.

5, cosmetics plastic tube PS=== hard glue (general hard glue), polystyrene, bright and brittle

HIPS=== Non-breaking rubber, modified polystyrene, elasticity. Toughness and impact strength are high

ABS===ABS glue. Super-shatterproof rubber, acrylonitrile-butadiene-styrene, easy to electroplate. High strength. Resistance to impact, cold, abrasion and corrosion.

SAN(AS)=== transparent unbreakable rubber, styrene-acrylonitrile copolymer

EPS=== styrofoam, expanded polystyrene

PS primary color is bright color, HIPS primary color is milky white, ABS primary color is light ivory color.

PS。 HIPS。 The main differences of ABS are: PS is brittle, HIPS and ABS have better toughness. When bending samples, PS is easy to crack, HIPS and ABS are difficult to break, and the bending parts are white. PS primary color is bright color, HIPS primary color is milky white, ABS is light tooth color. PS。 HIPS。 And ABS are flammable, and can still burn continuously after the fire source is taken away. The flame is yellow with thick black annihilation carbon bundle, which escapes with annihilation gas. PS carbon bundle is a little less. When burning, the plastic near the flame softens and is not easy to drip, PS and HIPS will blister, ABS will not blister but be in coking state. The announced smells of these plastics are quite different when they subside. PS has a single body of styrene, and ABS announces a pungent smell, which has certain toxicity.

Post time: Apr-30-2021