Q:What's the difference between plastic packaging bags and clothing bags?

From film making, printing to bag making, there's a big difference. The clothes bag you say is just a bag of bags. There are several kinds of clothes bags I have used, and each machine needs different machines

Q:Do vacuum packing bags have to be vacuum packed?

To be exact, vacuum packing bags must have vacuum packaging machines to complete vacuum packaging. If you want to use vacuum packaging bags for non vacuum packaging (i.e. ordinary packing), you can also use them.

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:Should the food packaging bags be labeled with QS markers?

QS labels should be affixed, but the manufacturer's own QS is not affixed to the manufacturer of the packaging, but the packaging supplier must print its QS number on the outer package of the package to the manufacturer.

Q:Duck sauce made of pure aluminum foil vacuum packaging bag or transparent plastic?

PET thin film / foil / nylon //PE thin film, it is best for the duck packaging, the longest period of hedging. Of course, there are some other place form, slightly reduce some costs, such as the PET// //PE aluminum foil film, but the effect was not as good as the former good bag, a bag to reduce the cost of not much, but the effect is significantly reduced, so it is recommended to use the former.

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:Three layer coextrusion material for packaging bags

At present, there are mainly two kinds of non PVC multilayer coextrusion infusion membrane: three layer structure and five layer structure.The performance of the layers of the three co extruded films for outer: block air, good printing performance; the middle layer with water resistance and anti permeability and elasticity; inner: non-toxic, good heat sealing and elasticity, and the solution has good compatibility.

Q:What material is the surface of the packing bag such as instant noodles, pickled mustard tuber, small bread and so on? Why should we add this layer?

Aluminum filmThe first consideration of food packaging is the barrier properties of packaging materialsBecause barrier property is good, the preservation time is long, the shelf life is long, the quality can guarantee betterAt present, all food packaging materials, aluminum foil barrier is the best (followed by some high polymer plastics, like EVOH, PVDC, etc.)Therefore, the most common, always in the middle of two layers of plastic film, a layer of aluminum foil, to improve barrier,But why not use aluminum foil packaging alone, but also two or more layers of plastic film?,

Q:How are food bags made out?

Copperplate etching: that is, according to the design confirmation of the food packing bag, the copperplate needed for the food packing press is made. The version is a cylinder, and is a set of not a single root, the specific size, the number of versions, according to the previous package design to determine. One color has to make a copperplate, if there are 5 colors, you have to do 5 copperplate, of course, sometimes can also be common edition.

Q:How about the material difference of food packaging bag?

The main contents of food packaging bags are: PVDC (poly partial two vinyl chloride), PE (polyethylene), PA (nylon), EVOH (ethylene / vinyl alcohol copolymer), aluminum film (aluminum +PE), etc.All kinds of materials have different properties and different uses. Generally, food packaging bags are not single materials, and they are usually multilayer compositeThe sausage casing is a single material, PVDC