Q:How many kinds of packing bags are there in the packaged foods?

The material is generally PE and PP.Compared with non food packaging, it does not contain plastic additives, and will not release toxic substances during use. For example, the more severe plasticizer in the front can cause cancer, and is used in PVC packaging. PVC used in the past, but because of its insecurity, it is now being gradually replaced by PE plastic wrap.

Q:What kind of material is the packing bag of ceramic tile?

The general is the use of a three paper membrane material, can play a waterproof effect, and not easy to damage, for this paper packaging, you can also consult some packaging manufacturers to see, for example, Hengyi Lihong, sincerity of these packaging manufacturers.

Q:What is the difference between LDPE and PE-LD in a package?

LDPE is a low density polyethylene, environmental protection bag production is one of the raw materials, commonly known as low material, another raw material of HDPE is also called high pressure materials, packaging film, the two materials are mixed according to a certain proportion and then blowing, printing, cutting, packing bag made of,PE-LD is a common environmental protection mark printed on top of the packing bag, which indicates that the manufacturer is using an environmentally-friendly plastic bag.

Q:How can the labels affixed to the bags be removed quickly?

With the label supplies into the water immersion, after the label has been soaked, erase. This method is also applicable to metal and plastic tools, but it takes time.

Q:The shelf life of the package usually takes several forms

Food soft packing materials mainly include polyethylene, polypropylene, polyester, polyamide and other polymer materials. These packing materials show great differences because of their molecular structure, forming process and additives. Therefore, for food manufacturers, choose a suitable packaging for their products is particularly important, otherwise there will be food safety issues.

Q:What kind of material is the express package on the market now? It's dark in the outer grey.

It's a special packing bag for express delivery. That kind of paper bag, like post office, is specially designed to pack the things you want to express.Wrap things up and seal them in a bag.Some sellers or buyers need such bags when they are delivered. Some express to the seller to buy money.

Q:What are the types of composite packaging bags?

Folding general transport packing bagA package of bags weighing 0.5-100 kilograms, mostly woven from plant fibers or synthetic resin fibers, or a multi layer material package made of several flexible materials. For example, straw bags, bags and other cement sacks. - mainly packaging powders, granules, and individual small items.

Q:The difference between a vacuum and a vacuum in a food package

So, the difference is very clear, is the vacuum packaging bag of the air as much as possible out, but the inflation is the air in the bag is replaced by nitrogen or carbon dioxide and other inert gases, the purpose is as far as possible to reduce food and air contact oxidation process, slow food, avoid food rapid deterioration.

Q:Why is the higher the elevation, the more food bags inflate? From a physical point of view

The higher the altitude, the less the atmosphere, the smaller the pressure, and the pressure in the food package is a fixed value. The reason for the swelling of food packaging bags is that the pressure inside the food bags is greater than the external pressure!

Q:What can be easily removed from the words printed on plastic bags?

A dye is a substance that makes certain colors adhere to the fiber and is not easily detached or discolored. The dye is usually dissolved in water, a part of the dye mordant dyes can adhere to the needs of the fiber. Dyes are substances that make fibers and other materials colored. They are divided into two main categories: natural and synthetic.