In order to minimize the environmental damage of plastic bags, today supermarkets, businesses, and shops have gradually switched to using supermarket bags that are diverse in design, friendly and safe. environmental protection. Therefore, people produce supermarket bags to serve the needs of consumers.
Supermarket bag manufacturing process
Regarding the production process, there are many stages:
HDPE plastic beads, color granules → Mixing plastic beads → Blowing film bags → Forming rolls → cutting rolls into thermoplastic bags → packaging finished products.
From HDPE resins, colored resins are put into a specialized mixer, and special additives will also be added at this stage to create a complete mixture.
After the plastic mixture is mixed, it will be transferred to a bath to be heated until it is completely melted. The plastic is then blown into a form of air bubbles. The shell of this air bubble is the nylon membrane.
After the air bubble is pulled up and cooled, a series of rollers will pass through and squeeze the air bubble into a flat form. And rolled into rolls for neatness.
The next step is to cut the plastic rolls into bags by automatic machines. The sensor eyes on the machine will accurately measure the desired length to divide the nylon roll into equal parts. In particular, the bottom of the bag will be heat pressed as soon as the cutting machine is finished.
Finally, supermarket bag products will be carefully packaged and transported to businesses, supermarkets, …
Product characteristics
- Supermarket bags are usually 3 – 5cm thin, the surface of the bag has an average gloss.
- Has good water resistance but very poor permeability and breathability.
- In terms of hardness, it is better than ordinary plastic bags.
- Has high flexibility and elongation.
Outstanding advantages
- Supermarket bags are safe products that do not contain harmful substances that affect human health.
- Can hold many objects, heavy goods.
- Material and toughness are durable, difficult to tear, when used, there are 2 sturdy handles.
- Outstanding colors with many different detailed designs for users to choose.
- Various sizes can accommodate large cargo weights.
Parameters of supermarket bags
During the production of supermarket bags, the parameters have been passed rigorous testing:
- About the bag material: made from pure HDPE plastic, do not mix nuts that are harmful to the environment and human health.
- Bag size: varied in size from 10 to 100 cm. In addition, the size can be made according to the needs and wishes of the customer.
- Color: mainly use clear white and milky white. However, the factory still produces colors according to the customer’s requirements.