For humans packaging plays an important role for storing, transporting, preserve food, goods and other products. Before the invention of the plastic bag , human made a bag from the animal skins, large leaves, to keep their vegetable and food clean and fresh. Then with the time new things was invented like steel, iron to keep food safe. Now lots of materials were put in use like paper, glass, plastic, wood, aluminium . In innovative technological world packaging is a most convenient way to fulfill the demands of the people. Plastic bags and stand up pouches is an excellent solution for this demand. Now the question is Which is ingredient to make this plastic?
Plastic is created from the oil purification process and for that only 4% of the oil is used for the total world’s oil production. It is a biochemical manipulation of certain properties of oil, into polymer, that behave plastically. Plastic bags are made from mainly polyethylene. With special types such as a food bag, shopping bag, plastic bag with zipper, stand up pouches,plastic bags with valve, custom plastic bag are available . To make a good quality bag 100% virgin resins are used and this type of bags are strong, smooth and it also has a nice appearance. If the customers want a different color like blue red, green , cyan, white, black then for customers many colors are available . The clear bag is also available in the market if you need it. Different colors make the bags look impressive and eye catching.
If customer wants a bag at low budget then the manufacturer will add other materials like CaCo3 (Calcium Carbonate) and they also add some recycled materials to reduce the cost of the bag and make them cheaper. They also add an additive to make bags strong , it called as impact modifier. If you want a bag that is easily destroyed then the manufacturer must mix biodegradable additives as EPI or DW2 with 1 or 2% when extruding.
Now the question is how these plastic bags are produced?
In the first step, to make the big plastic film roll, all the materials will be put into extruding machine. In this step, smooth appearance of the bag has to be under control. In the second Step, printing process for the custom plastic bag is done. Company logo, brand name and other information about the product will be printed on the bag. In the third step, cutting and sealing process is done. In this step, plastic rolls are cut into the different shapes and different handles into the cutting workshop. The handles may be T-shirt, patch handle, die cut, rigid, soft loop, etc.. In the next step, manual work is done which is not done automatically like to fix the valve.
If you want to get a more information related to the plastic bags, stand up pouches any other material related to the packaging then visit our site : www.swisspac.com
- how coffee bags work? - February 8, 2014
- The way of use bags like doypack bags and sealed bags - February 1, 2014
- Coffee and vacuum bags are especially used for coffee beans - January 24, 2014