The calculation method of the unit consumption of clothing fabrics, the small coup for estimating the unit consumption

For clothing processing factories, customers often need to give corresponding quotations when they send inquiries. If there is a set of methods, it is undoubtedly very convenient to quickly determine the amount and loss of clothing fabrics.
So what is the calculation method of fabric loss in garment processing? In actual production, how can we reduce the loss of fabrics in garment processing?
In fact, there are many ways to calculate the unit consumption of clothing fabrics. The usual methods include template layout, analogy and area calculation.
Generally, in the actual mass production, we use the template layout method to determine the unit consumption.
Principle of area calculation method:
The basic principle of the fabric area calculation method is a process of "turning zeros into wholes and irregularities into rules".
We know that a piece of clothing usually has many trivial pieces, such as front placket, back placket, sleeves, neckline, etc. As far as the structure and shape of a single piece of clothing are concerned, many parts have no rules at all, but if By combining or merging the uniform pieces that have no regular rules, we can find rectangles, parallelograms and other regular shapes that are convenient for calculating the area.
So how to combine trivial pieces of clothing together for calculation, how to combine irregular pieces of clothing into a shape that is relatively easy to calculate the area to calculate the area materials, in fact, is the principle of how we use the area calculation method to calculate the unit consumption of clothing fabrics. .
Calculation formula for the amount of clothing fabric:
1. Basic formula:
Amount (code) = total area (M2) × (1 + loss) ÷ effective width (M) ÷ 0.9144M/yard
Loss: 6% for woven fabrics, 8% for knitted fabrics;
Effective width: total width-3cm (pinhole)
Price (yuan/yard) = price (yuan/kg) × weight (kg/m2) × width (m) × 0.9144 (yard/m)
When adding cotton, the loose amount is 4cm.
2. Calculation of the amount of coat:
Length = length of clothes + hem hem and seam position (2.5cm + 1.5cm) + shoulder and neck seam position (1.5cm) + loose volume (1cm)
Width = chest circumference + side seam position (1.5cm×4) + placket seam position (1cm×2)-zipper width (1cm) + loose volume (2cm)
3. Calculation of the amount of sleeves
Length = sleeve length + cuff hem and seam position (2.5cm + 1cm) + shoulder and neck seam allowance (1cm) + loose volume (1cm)
Width=sleeve elbow width×2+stitch position (1.5cm×2) + loose amount (1cm)
Sleeve elbow width is measured from 1/2 the shoulder point to the cuff straightness, generally minus 4~5cm according to the cuff straightness;
4. Calculation of pants area:
Length = trousers length + waist height × 2 + waist and head seam position (1cm × 2) + foot hemming
Width=Hips×1.24＋16cm
Empirical formula: width = hip circumference + back wave uplift + seam position
Another: Back wave upturn (35cm for adult trousers, 40cm for middle trousers, 45cm for shorts; 25cm for children’s trousers, 30cm for middle trousers; 15cm for children’s trousers, 20cm for middle trousers)
Another: hip circumference is generally measured at the top 1/3 of the wave bottom before the wave length
5. Calculation of collar dosage
The amount of collar = collar length × collar height × 2
Men's clothing is generally at least 10cm;
Inner hanging dosage: 15cm for men's clothing, 13cm for women's clothing;
Lead sticker dosage: generally 5cm;
6. Calculation of other usage
Hat: Press 15～20cm (male 20cm, female 15cm), with cap mouth press 25cm, inside draw press 5cm
Face pumping: press 10cm
Rolling bar: 2.2cm wide-2.713×4% (loss) ÷ 0.9144 (yard/m)
Lining: the width is 1.5m, the lower part of the sleeve is 15cm, and the lower part of the trousers is 25cm;
Bag cloth: 2 pieces of 4 pieces press 15cm; 2 pieces press 5cm;
Net cloth consumption: length×1.5m (width)×1.06 (loss)×gram weight (mesh cloth loss is calculated in kilograms, there are many holes, and the loss is large)
Small coup for estimating unit consumption:
When buying a cloth with a width of 2.7, the calculation methods used are as follows:
　　 (1) The materials used for men's tops are: use 3 lengths, plus 0.3 feet of side material. If someone’s clothing length is 2.3 feet, the amount of clothing needed is: 2.3×3+0.3=7.2 (feet).
　　 (2) The material of the women's blouse is: 3 lengths are enough. If someone's clothing length is 1.9 feet, the amount of clothing needed is: 1.9×3=5.7 (feet).
　　 (3) The materials used for men's trousers are: 2 trousers long, plus 0.3 feet of side material. If you make two pairs of trousers, the waistband can be cut within 2.3 feet, and the material used is 3 trousers long, plus 0.3 feet of side material.
　　 (4) Women's trousers are made of the same materials as men's trousers. If you make two women's trousers, the waistline is within 2.3 feet, the hip circumference is within 3.2 feet, and the trousers are not more than 0.7 feet, they can also be cut. The material used is 3 trousers long, and the side material is 0.6 feet.
　　When purchasing double-width clothing (with a surface width of 4.3 feet), the calculation methods for the clothing are as follows:
　　 (1) The ingredients for men's feces are: 1 dress length, plus 1 sleeve length, plus 0.3 feet of side material, and then divide by 3. If someone’s clothing length is 2.2 feet and sleeve length is 1.8 feet, the amount of clothing needed is (2.2 + 1.8 + 0.3) ÷ 4
=1.43 (m)
　　 (2) To make trousers, only learn one trouser length.
　　 (3) For a coat, the material used is 2 lengths, plus 0.3 feet of side material.