What Is The Highest Temperature Resistance Of PE Protective Film?
Dec 17, 2021
PE protective film has a wide range of uses and is also very common in life. In traditional packaging, the general food industry and medical industry use the largest amount. The packaging used in the past has great environmental pollution. Basically, PE protective film is used for food packaging preservation in life. PE protective film is often in two temperature states, one low temperature and the other high temperature. We will not talk about low temperature. The technical engineer of PE film will tell you the following Say what is the highest temperature resistance of pe protective film.
PE can be divided into LDPE (low density polyethylene) and HDPE (high density polyethylene). The continuous use temperature of LDPE is 60-80℃, and the continuous use temperature of HDPE is 80-100℃. High temperature resistance can reach 100 degrees Celsius. The pe protective film will not release toxins when heated.
PA
Polyamide is commonly known as nylon and its English name is Polyamide (PA). The nylon film has high fastness, good strength, and good toughness. It is the material of choice for vacuum bags and high-temperature bags. It has high tensile strength, elongation and tear strength. The nylon film has outstanding cold resistance and heat resistance. It can be used at -30℃ ~ -200℃, and it has excellent oil resistance, non-toxicity and The aroma retention and oxygen barrier effect, so nylon film or nylon composite film (composited with low-density polyethylene, polypropylene, aluminum foil, etc.) is mainly used as packaging materials, such as: packaging sausages, cheese, cakes and other foods. Steam sterilization at a high temperature of 120~130°C is especially suitable for making food bags for astronauts and medical equipment containers.
PP, a thermoplastic resin made by the polymerization of propylene. There are three configurations of isotactic, random and syndiotactic. Industrial products are mainly composed of isotactic. Polypropylene also includes copolymers of propylene and a small amount of ethylene. Usually a translucent colorless solid, odorless and non-toxic. Due to the regular structure and high degree of crystallization, the melting point is as high as 167℃, heat resistance, and the product can be steam sterilized is its outstanding advantage.
Copolymer PP material has lower heat distortion temperature (100℃), low transparency, low gloss, low rigidity, but has stronger impact strength. The impact strength of PP increases with the increase of ethylene content . The Vicat softening temperature of PP is 150°C. Due to the high crystallinity, the surface rigidity and scratch resistance of this material are very good.
Features: non-toxic, odorless, low density, strength, stiffness, hardness and heat resistance are better than low-pressure polyethylene, can be used at about 100 degrees. Has good electrical properties and high-frequency insulation is not affected by humidity, but at low temperatures It is brittle, not wear-resistant, and easy to age. It is suitable for making general mechanical parts, corrosion-resistant parts and insulating parts. Common acid and alkali organic solvents have little effect on it and can be used for food utensils.
