The description of the fabric on the general backpack manual is not very detailed, only CORDURA or HD. What it says is just a textile method. If a more detailed description should be material + fiber + textile method. For example: N. 1000D CORDURA, that is to say, 1000D nylon CORDURA material.
Many people think that the "D" in the backpack material is representative of density or weight. This is all wrong. D is an abbreviation for denier. Denier is the unit of measurement for fibers. The calculation method is: 1 gram of weight per 9,000 meters long is called Denier. Therefore, the smaller the number in front of D, the thinner the line and the smaller the density. For example, 210D material, the texture is particularly thin, generally used as the lining of the bag or the compartment. The 900D or 1000D has a thick grain line and a thick line, which is very wear-resistant and is generally used as a bottom.
The woven line of oxford is woven from two strands, and the weft is also a relatively thick line. Its textile method is one-on-one, which is a very general textile method. Usually 210D, 420D material. The reverse side is coated. Used as a lining or compartment for the bag.
KODRA is a fabric made in Korea. To some extent it can replace CORDURA. It is said that the inventor of this fabric originally wanted to study how CORDURA was spun, and finally did not research it, but invented a new fabric, which is KODRA. This fabric is also woven in Nylon and is also based on fiber strength standards such as 600D and 1000D. The reverse side is coated, similar to CORDURA.
HD is short for High Density, meaning high density. Look at the fabric and OXFORD. Usually 210D, 420D, usually used as the lining or compartment of the bag. Reverse coated。
R/S is short for Rip stop. This fabric is nylon with small squares. Its toughness is stronger than that of normal nylon, and the outer edge of the fabric is a thicker line. The middle of the square is woven with very fine lines. Generally, there are 300D, 330D, 450D, etc., which can be used as the main material of the backpack, such as large face, outer pocket and the like. The reverse side is coated.
Dobby's fabric seems to have a lot of very small lattices, but if you look closely, you will find that it is woven from a thick and thin line, the front and back lines are different. Generally there is very little coating. The intensity is much worse than CORDURA and is generally only used on casual bags or short-distance travel bags. Don't be on a mountaineering bag.
VELOCITY is also a nylon cloth. High intensity. It is also commonly used on mountaineering bags. The reverse side is coated. There are 420D or higher strength. The front of the fabric looks a lot like Dobby.
TAFFETA is a very thin coated fabric, and some coatings are more than one time, so the waterproof performance is better. Generally do not make the main fabric of the backpack, only raincoat, or the rain cover of the backpack.
Usually replaced with Poly. Poly density is generally 64t (low), 74t (medium), and 82t (height). Fabrics are getting stronger from 150D to 1800D. The general strength of 600D can be used as the bottom of the mountaineering bag, but its textile method is not as strong as CORDURA.
Its mesh surface has a gap with the material below, usually 3mm or more. It is this kind of space that makes it have good ventilation performance, so it is generally used as a strap or back or other place close to the body. The general net has many specifications, and the nylon net is generally used on the bag as a sundries pocket or a water pocket on both sides of the bag.
POLYESTER is characterized by good breathability and moisture wicking. There is also strong acid and alkali resistance and UV resistance.
SPANDEX has the advantages of high elasticity and high flexibility as well as good recovery. Generally, 2% can improve the sense of movement of the fabric, and the drape is also preserved. The weak point is that the alkali resistance is weak; it is easy to turn yellow and embrittlement after being exposed to chlorine or ultraviolet rays. Poor heat resistance. Often used as an auxiliary material and other materials blended together.
Nylon, polyamide fiber. The advantages are high strength, high wear resistance, high chemical resistance, good deformation resistance and aging resistance. The disadvantage is that the hand feels harder.