There are many plastic products in our lives, the most common of which may also be PET plastic. PET plastic packaging refers to the use of polyethylene terephthalate, which is the name of the plastic category, including polyethylene terephthalate, polybutylene terephthalate, polyethylene terephthalate Glycol esters. Condensed from terephthalic acid and ethylene glycol, it is heat-shrinkable polyester and saturated polyester.
What is PET material?
PET plastic is plastic with a highly stacked molecular structure and has good crystal orientation ability. Due to these two characteristics, PET plastics have good film-forming properties. Not only that, good optical performance and weather resistance are also two major characteristics of PET. In addition, PET plastic is also a good insulating material. Its various characteristics determine that it is a good material for making plastic boxes. PET plastic bottles are light in weight, non-toxic, and have high structural strength.
Identification method
- Smell the smell first. PET has a different smell than regular plastic. Burn it with a lighter, and you will smell a very fragrant and comfortable smell. If PET contains other ingredients, the smell will be very pungent. There is a bottle that contains SEBS ingredients and cannot be used.
- Look at the burnt part. If it is too dark or the oil drips quickly, it is likely that the melting point is abnormal. This situation is common in PET film sheets.
- Pull the wire. After burning out, use a lighter to pull the wire to see if the wire is elongated, and then pull the outer wire to see if the middle breakpoint is rolled into a small circle. The larger the volume, the higher the melting point. But generally speaking, if it is bottle flakes, it should not be a big problem. The most critical point is to distinguish whether it contains PVC, which is the Achilles heel of PET. Take more samples first, and then lay them flat in a sunny place. PVC is light blue in the sun. There is if I fold it
Features of PET packaging boxes
The basic material of pet packaging boxes is made of milky white or light yellow highly crystalline polymers, with a smooth and shiny surface. It has excellent physical and mechanical properties in a wide temperature range, the long-term use temperature can reach 120 degrees, and its electrical insulation is excellent. Even at high temperatures and high frequencies, its electrical properties are still good, but its corona resistance is poor Creep resistance, fatigue resistance, friction resistance, and dimensional stability are all very good. PET material has been favored for many years, not only because of the superiority of its own material but also because of its recyclability. PET packaging boxes have the following features:
- The PET packaging box has good transparency and light transmission, the box body feels good to the touch, and the box body is exquisite and high-grade, which can increase the added value of mobile phone leather cases, tablet leather cases, or protective cases; more importantly, it is conducive to publicity and corporate image enhancement.
- The material used in the PET packaging box is an environmentally friendly material.
- The PET packaging box is fully transparent without printing, and consumers can have a clear view of the products in the box, which quickly attracts consumers' attention. The PET box can also be printed with exquisite patterns by UV offset, or printed with a distinctive pattern effect on the outer box by means of hot stamping, hot silver, or hollowing out.
- The PET packaging box has excellent high and low-temperature resistance performance and can be used in the temperature range of 120°C for a long time, and can withstand high temperatures of 150°C and low temperatures of -70°C in short-term use.
- The pet packaging box can avoid waste and can be recycled completely. At the same time, the material is light, durable, diverse in variety, and easy to transport.
- The PET packaging box has excellent barrier properties, and it will be biologically inert in the body. Once it is accidentally inhaled, it can guarantee safety during handling and will not cause any health hazards.
Advantages of pet packaging boxes
- It has good mechanical properties, the impact strength is 3~5 times that of other films, and the folding resistance is good;
- Resistant to oil, fat, acrylic acid, dilute alkali, and most solvents;
- It has excellent high and low-temperature resistance performance, can be used for a long time in the temperature range of 120 ℃, can withstand the high temperature of 150 ℃ for short-term use, can withstand the low temperature of -70 ℃, and has little effect on its mechanical properties under high and low temperature;
- Low gas and water vapor permeability, excellent gas, water, oil, and odor barrier properties;
- High transparency, can block ultraviolet rays, good gloss;
- It is non-toxic, tasteless, hygienic, and safe, and can be directly used in food packaging. PET is used in a wide range of applications, mainly for fibers, films, and engineering plastics. PET fiber is mainly used in the textile industry.
Application of pet plastic box
- The pet plastic box has the properties of corrosion resistance, acid and alkali resistance, oil resistance, and impact resistance, and has strong mechanical strength. The pet plastic box is mainly used in the packaging fields of food, culture, entertainment, materials, etc., especially with high transparency and flow Good performance, fast forming pet special material.
- The pet plastic box is made into a bird's nest dry goods box, transparent folding box, plastic folding box for cosmetics, pet cake box, etc. You can see the product style inside the package without opening the package, which increases consumers' desire to buy the product.
In recent years, PET plastic packaging has undergone major improvements to reduce environmental impact. As a manufacturer of plastic boxes, jingxin is also looking for ways to make PET packaging more biodegradable, thereby shortening the lifespan of plastic and reducing its harm to the environment. In summary, PET plastic packaging boxes are widely used in the product packaging industry due to their versatility, durability, and recyclability.
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