Mummy is a unit of measurement equivalent to the weight of one square meter, 1mm (m/m) = 4.3056g/m2, so 40mm is 172g/m2.

Heavy means heavy, there is no special specification or product number. But it's too heavy, usually crepe silk with many warps and wefts.

The gram weight of silk refers to the gram weight of fabric. Generally speaking, the greater the gram weight, the more silk raw materials are used and the higher the cost. But we can't simply say that the heavier the weight of the fabric, the better the fabric. I think so. It has something to do with the variety of fabrics and the style of clothes.

Extended data:

Compared with silk fabrics, silk fabrics generally refer to silk, including mulberry silk, tussah silk, castor silk and cassava silk.

Silk fabric is a pure silkworm white woven silk fabric, which is woven with twill weave. According to the square meter weight of fabrics, they are divided into thin and medium-sized fabrics. According to the different post-treatment, it can be divided into dyeing and printing. Its texture is soft and smooth, soft and light, colorful, cool and comfortable to wear. Mainly used as summer shirts, pajamas, dress fabrics and headscarves.

Common varieties of silk fabrics include crepe de chine, crepe de chine, georgette, georgette, crepe satin plain, stretch crepe satin and warp knitting.

Characteristics of heavy silk

In addition to the characteristics of ordinary silk fabric, it also has the characteristics of non-shrinkage, stiffness and easy finishing. The quality of heavy silk fabrics is indeed higher than that of ordinary silk fabrics, especially heavy silk fabrics are extremely difficult to scratch, which is incomparable to other silk fabrics.

Requirements for heavy silk

The weight of the fabric is above 40g/m2, and the fabric is delicate and thick, soft and smooth, with strong drape and elegant quality.

References:

Baidu encyclopedia-silk

Baidu Encyclopedia-Chongsi