Tea packaging bags. China is the hometown of tea. Tea-making and tea-drinking have thousands of years of history. The main varieties are green tea, black tea, oolong tea, scented tea, white tea, yellow tea, and dark tea. Tea has the therapeutic effects of fitness and disease treatment, and it is full of appreciation and can cultivate sentiment. Tea tasting and hospitality are elegant entertainment and social activities for Chinese individuals. Then, more and more attention is paid to the packaging of tea. There are boxes and bags. Today, we mainly introduce the material and production process of tea bags, as well as some problems in the later period.
First, according to the national standard tea packaging bags, the packaging materials are PET, PE, AL, OPP, CPP, VMPET, etc. The most commonly used structure is PET/AL/PE.
Let's first look at the production process of tea packaging bags: printing-inspection-coding-composite-maturation-slitting-bag making
One. print
There are printed and non-printed packaging bags. The cost of non-printing is lower than the cost of printing. Because one of the colors requires one plate roller, there are several plate rollers for the few colors. When it comes to plate making, it is best to find a large company to do it. The quality and service are relatively guaranteed.
The quality of the printing machine is also very important. If there are problems with printing speed, correction during printing, etc., it will affect the overall delivery time.
two. Inspection
Inspection is usually after printing and in the process, that is to say, if you do not need to print the tea packaging bag, you do not need to inspect the product. First, it is necessary to make it clear that the inspection is a machine, and the printed film is inspected according to the set data.
three. add mosaic
For customers who have coding requirements, the product can be coded.
four. complex
Compounding is to glue several kinds of membranes with corresponding adhesives. Some of the parameters will not be emphasized. Here we mainly talk about the classification of composites. The composites are divided into: dry composite, solvent-free composite, co-extrusion composite, Extrusion compound. They have their own advantages and disadvantages.
Fives. Mature
Curing is to let the adhesive volatilize, mainly the residual adhesive during the previous compounding. Different packaging and roll film packaging of different products have different curing times.
six. Divide
Slitting can be used for both bags and film rolls. Because the printed products are relatively wide, slitting is a critical step to produce the specifications required by customers.
Seven. Bag making
This is according to the needs of users, some need to make bags, some do not need to make bags, common bag types are: three-side sealing bag, folding bottom self-supporting zipper bag, slotted self-supporting zipper bag, double-slip side bag.
