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:Three layer coextrusion material for packaging bags

Three layer co extruded films composed of outer layer of high mechanical strength polyester or polypropylene, elastic material mixed or SEBS intermediate layer is polypropylene with different proportion (SEBS), mixed layer is polypropylene copolymers with SEBS.

Q:The vacuum packing bag is sealed. How can I open the zipper?

The simplest and most effective way is to apply a layer of wax to the surface of the zipper, and use the lubrication of the wax to achieve a smooth effect. With a candle on the surface of the zipper back and forth after wiping, and then from the bottom of the repeated several times, the zipper will be smooth.

Q:Why are some teas not vacuum packed?

In order to ensure the quality of tea and pure taste, natural, free from external conditions, but also in order to enhance the image of tea, enhance the value of goods, the exquisite packaging of tea is the trend of the times. These unsuitable vacuum packed tea, such as green tea and Longjing, tend to be easily squeezed and packed and can be packed in vacuum packed with nitrogen. Brick tea packaging paper bag packaging form form West Lake Longjing Tea vacuum tea vacuum packing inflatable packaging is a mixture of gases in vacuum and then filled with nitrogen, carbon dioxide and other two or three kinds of single gas or gas. Nitrogen is an inert gas with a density close to the air. It acts as a filling, keeping positive pressure in the bag and protecting the leaves from crushing by atmospheric pressure. Carbon dioxide can make tea into sleep, and maintain the quality of tea.

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

The higher the altitude, the thinner the air outside, the lower the air pressure; and the air pressure inside the food bag is high, which causes the food bag to drum up. As the height gets higher, the air pressure outside may be lower, and food bags are likely to burst because of the pressure inside and outside

Q:What does "TM" mean in a food package?

Its role is to tell people that it is marked by the graphics or text of the goods or services of trademark, not the name is not advertising. English and "R" is the abbreviation of "register", "register" Chinese means "registered", goods or services on the mark that is told people, it marked the graphics or text but not trademarks, and registered trademarks, protected by law, unauthorized, unauthorized use can not be any other individuals and organizations.

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

But the packing bag is not a single material, generally the inner layer is PE, the outer layer is PA, and the middle may be EVOH, or PVDC, etc.Yes, the aluminized film is used

Q:How do you determine the 210mm*300mm package and determine its version and length?

Length 21 cm, width 30, vertical roll length suggest up to cooperate with compound printing equipment

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

The height of the bag is 14CM, the width is 9CM, and the width of the side is 3CM. The bag type belongs to the organ bag!

Q:What are the soft and hard sides of plastic bags? Material or process technology?

On the basic price will be a little higher, the brittle is generally PP or PET is done, some relatively low grade. Soft is generally made of multi-layer coextrusion film, barrier, and feel good. This soft about 27000 yuan / ton, while the PP film generally as long as 17000 yuan / ton, ten thousand tons a difference.