How much is a plastic bag?

The cost of each bag of materials is 0. 14 yuan.

The calculation formula of plastic bag material cost: length * width * number of layers * thickness * specific gravity * price = material cost.

Such as 40CM long, 30CM wide, 4, 4 lines of double-layer PP material, per ton 14600 yuan, the cost of each bag of materials is:

0.4 (length) *0.3 (width) *2 (number of layers) *0.04 (thickness) *0.9 1 (specific gravity) * 14.6 (unit price per kilogram) = 0. 1275 yuan.

Considering the loss of materials, the specific gravity is usually set to 1.

0.4 (length) *0.3 (width) *2 (number of layers) *0.04 (thickness) *0.9 1 (specific gravity) * 14.6 (unit price per kilogram) = 0. 14 yuan.

The cost of each bag of materials is 0. 14 yuan.

Material selection: All plastics are extracted from petroleum.

There are several kinds of raw materials for plastic products in the domestic market:

Polypropylene (pp): Low transparency, low gloss and low rigidity, but strong impact strength. Common in plastic buckets, plastic pots, folders, drinking pipes, etc.

Polycarbonate (PC): It has high transparency, high gloss and is very brittle. It is often used in plastic bottles such as kettles, space cups and baby bottles.

Acrylonitrile-butadiene-styrene (ABS): Resin is one of the five synthetic resins. It has excellent impact resistance, heat resistance, low temperature resistance, chemical resistance and electrical properties. It also has the characteristics of easy processing, stable product size and good surface gloss. Mainly used in milk bottles, space cups, cars and so on.