What details should be paid attention to when choosing boiled bags
1. When the boiled bag is out of the warehouse, it has no peculiar smell and peculiar smell. It is better not to use the boiled bag with special smell on the product packaging.
2. There must be written marks on the outer package of the boiled bag, including the name of the manufacturer, the address of the factory and the name of the product enterprise. There is no word "for food" in these two parts. Zipper bag products are written after the factory supplies inspection certificate.
3. It's very good to find food. Go to the mall and buy it. Control spending a few yuan at street stalls.
4. Some zipper bags are not suitable for food packaging. Because the boiling bag in this state is usually made of recycled plastic.
5. Due to the non degradable characteristics of boiled bags, they all cause environmental pollution. When purchasing food, they are very good and the most effective green packaging materials.
6. The most effective materials without coating and coating. At present, the purpose of packaging design is to make the package more beautiful, corrosion-resistant, long-term use of materials with coating. This not only brings problems to the recycling and reuse of materials after scrapping products, but also most of the coatings are toxic. If you eat these packaged foods, they will do great harm to your health. Moreover, the process of coating and plating also brings great pollution to the environment. Such as coating volatile toxic solvent gas, electroplating produced chromium and other heavy metal waste liquid, waste residue pollution.
Bag material knowledge: LDPE, LLDPE resin and film
China's composite film began in the late 1970s. From the early 1980s to the mid-term, China began to introduce some extruders, film blowing machines and printing machines to produce simple two-layer or multi-layer composite materials. For example, extruded BOPP / PE, paper / PE, PP / PE; dry composite BOPP / PE, PET / PE, BOPP / Al / PE, PET / Al / PE, etc. LDPE resin and membrane are often blended with a certain proportion of LLDPE to enhance its strength and stiffness. Mainly used in instant noodles, biscuits, mustard and other food packaging. General coating grade LDPE resins include: ic7a, l420, 19n430, 7500, etc.; blown LDPE resins include Q200, q281, f210-6, 0274, etc.; LLDPE resins include 218w, 218f, fd21h, etc. http://www.dgbpk.com/
Dongguan Beite packaging materials Co., Ltd
Dongguan special bag, plastic bag, plastic bag, plastic bag