Calculation of the quality of stretched film
Source：Calculation of the quality of stretched filmTime：2019-03-20Visitors：
Stretch film belongs to the method of weight loss of stretch film: thickness (Mic) * width (mm) * length (M) * 0.000009918 = kg, hand film 15.5Mic * 500mm * 500M * 0.00000918 = 3.56 kg. (The unit of thickness is micron, 20 Mic = 0.02 mm, width is usually 50 cm = 500 mm, length unit is meter, density is 0.918 g/cm3).
Stretch film packaging use cost = how many square meters = the specific length * width (common size 50cm) of the same weight and width: thickness determines the length. For example, the same weight of 500 kg: 20Mic thickness of the stretched film length is 54466.23 meters. A 15.5 Mic film with a length of 70279.01 meters.
If 20Mic is replaced by 15.5Mic, only 38.78 kg of film with a thickness of 15.5 Mic is required. Because (54466.23 meters ÷ 500 meters) × 3.56 kg = 387.8 kg. (15.5 thick film is 500 meters long and weighs 3.56 kilograms).
Assume that the price of a stretch film of 20 Mic thickness is 15.5 yuan/kg, and the amount is 500 kg. Its purchase cost is 500 kg × 15.5 yuan / kg = 7750 yuan. The actual number of meters purchased is 54466.23 meters. For the same number of meters, the film of 15.5Mic thickness only needs 387.8 kg.
Stretch film packaging use cost = how many square meters = the specific length * width (common size 50cm) of the same weight and width: thickness determines the length. For example, the same weight of 500 kg: 20Mic thickness of the stretched film length is 54466.23 meters. A 15.5 Mic film with a length of 70279.01 meters.
If 20Mic is replaced by 15.5Mic, only 38.78 kg of film with a thickness of 15.5 Mic is required. Because (54466.23 meters ÷ 500 meters) × 3.56 kg = 387.8 kg. (15.5 thick film is 500 meters long and weighs 3.56 kilograms).
Assume that the price of a stretch film of 20 Mic thickness is 15.5 yuan/kg, and the amount is 500 kg. Its purchase cost is 500 kg × 15.5 yuan / kg = 7750 yuan. The actual number of meters purchased is 54466.23 meters. For the same number of meters, the film of 15.5Mic thickness only needs 387.8 kg.
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