Thick wall PET cosmetics hoses with good mechanical properties, impact strength is 3 ~ 5 times of other films, the folding resistance good, oil resistant, resistant to fat, resistance to acid, dilute alkali, resistant to most solvents, heat resistant properties of PET is not high, the thermal deformation temperature is 85 ℃ or so, only but enhanced greatly improved after treatment. After cosmetic plastic tube glass fiber enhanced the PET mechanics performance is similar to the PC, PA, such as engineering plastics, thermal deformation temperature can reach 225 ℃. PET heat ageing and brittle temperature to - 70 ℃, still has a certain toughness when - 30 ℃. PET is not easy to burn, yellow flame, burning oil drip, thick wall PET cosmetics hose is an important choice of many cosmetics.
Thick wall PET cosmetics hoses of gases and water vapor permeability is low, has good resistance of gas, water, oil and peculiar smell performance, high transparency, can block ultraviolet light, good gloss, non-toxic, tasteless, good health, safety, can be directly used in food packaging. Pet is the height of milky white or light yellow crystalline polymer, surface smooth and glossy, resistance to creep, fatigue resistance, friction resistance and good dimensional stability, wear small, high hardness, has the largest of thermoplastics empty cosmetic tubes toughness. Good electrical insulating performance, affected by temperature is small, but the corona resistance is poor. Non-toxic, good weather resistance, chemical resistance stability, bibulous rate is low, resistance to dilute acid and organic solvents, but not hot water immersion, not alkali resistance.
PET resin of high glass transition temperature, crystallization speed is slow, the molding cycle is long, the molding cycle is long, the molding shrinkage, dimensional stability, crystallization of forming the brittleness, low heat resistance, thermal deformation temperature and the long-term use of temperature is higher in thermoplastic general engineering plastics, thick wall PET is the first choice of many skin care products.
With the market development of flexible packaging in cosmetic soft packing on the welding on a sealing lid can make the advantages of both the bottle and bag packaging. Industrial hose packing mainly has three forms: welding at oblique Angle, is currently the more popular on the market in Europe, have convenient dumping and filling, shelf displays good characteristics, additional packaging is pump tube generally used in more than 300 ml. Welded at the top of the more popular in Japan, 100 ml is commonly used in the following the small packaging products. Welding on the plane, is very rare in the United States, it is mainly used for large capacity (1 gallon to dozens of gallons) of industrial products packaging, general and outside carton.