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:Printing solvent for food packing bag

Determine the amount of water in the solvent by means of the principle of a different dissolution effect. Take the most transparent glass cylinder tube with 100ml toluene solution, take a small amount of analyte ester solvent such as toluene, evenly pour. When you just pour in toluene, carefully observe whether there is turbidity (milk white) phenomenon. If there is this phenomenon, the water content of the solvent is seriously exceeded, and the experience shows that when the moisture content exceeds 0.5%, the phenomenon is obvious. The water content test of benzene solvent can be carried out by extracting solvent from the long glass tube to observe whether there is delamination.

Q:What products need plastic packing bags?

Plastic packaging is almost everywhere.

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: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:Why are some teas not vacuum packed?

Feng Xing packaging machinery factory experts explained that the main role of vacuum packaging machine is oxygen, moisture, high temperature fermentation, etc., in order to prevent the deterioration of tea. The principle is relatively simple, which is conducive to vacuum packaging machine to remove the air in the packaging bag, and then sealed, so that tea in a vacuum under the state, and absolutely isolated from the outside world.

Q:What's bread packing? Polyethylene film, waterproof cellophane, etc.

More importantly, the use of aluminum foil / composite or polyethylene composite or aluminum foil / polyethylene composite material. Although this type of packaging is opaque, it protects against loss of vitamin B1 in bread.

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:Can aluminum packaging bags be recycled?

Tetra Pak, Combibloc and other milk packaging (the two kinds of packaging are mainly China milk packaging, or packaging recycling separation Fangzhuan) technology has matured, the waste recycling plant can be decomposed into boxes: good pulp, aluminum, plastic, the cost also is (about 5 years ago to calculate), the current difficulties are: Chinese people's awareness of garbage is not strong due to high cost recovery (plus the current labor costs rise), in recent years a recycling plant is estimated to be closed, the state support in the tax area is likely to continue to;

Q:The package specifications are 9 multiplied by 14 plus 3. How big is it?

Custom vacuum packing bag, I recommend to have experience in custom vacuum packaging bag manufacturers, because it can reduce the cost and time for many of you, can give you a lot of packaging design and customized recommendations.