Q:Plastic packing bag printing color

See what you do with materials, PE/PP/PET, etc., the material is not the same, the price is different, this is usually the printing press to help you determine what material to use.

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

A good vacuum packing is recommended.

Q:What material is the vacuum packing bag, please?

And also consider the content and weight of the package to determine the reasonable use of the packaging materials. There is no static, and the right is the best.

Q:What are the packaging forms of fresh milk?

The main packaging forms of fresh milk are plastic bags, boxes and bottles. It is closely related to the way of sterilization of fresh milk

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

Use the lighter directly on the other side of the metal label to burn for a while. The glue on the label will melt quickly. This method works fastest and works best, but it only works for metals.

Q:Printing process of packaging bag

For the surface or irregular surface can be used heat transfer, adhesion is good, not easy to fade, but requires a transfer equipment.Screen printing belongs to orifice plate printing. It is called four printing methods together with flat, convex and gravure printing. Hole printing includes transcription, mesh flower version, stencil printing and screen printing etc.. Printing the principle is: (a version of the base paper or other version of the film version of the ink can be made through holes) at the time of printing, through a certain pressure so that the ink to the substrate through the hole hole Edition (transfer paper, ceramics etc.) on the formation of images or text.

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:Is there any identification on the vacuum package?

Laser inkjet printer, laser energy generator is the product surface engraved characters.

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

Q:Why a lot of the packaging bag surface is silver foil?

Because candies are also considering moisture side so many sweets are wrapped in wax paper (because the wax paper can prevent water entering)For example, chocolate is a special kind of candy, its melting point is 36 degrees, it is very easy to get the temperature melting in the hand, so the reason is tin tin foil, the hands of the temperature can be very good to pass out to prevent the chocolate melts quickly.