How is jacquard fabric different from dobby fabric?

Jacquard

Jacquard is a large-scale pattern weaved by a jacquard machine, and the number of warp yarns in the complete weave of jacquard can be as many as thousands. Most jacquards are based on one type of organization, and show patterns in another type of organization, such as plain weave and satin weave. Sometimes warp and weft yarns of different colors can also be used to make the fabric present a large colorful pattern. It can also be used with different fiber types, yarn counts and different warp and weft densities to make various styles of jacquard fabrics. The jacquard weave has a wide range of applications, and is often used in textiles such as bedding, curtains, and blankets.
△Jacquard fabric

The jacquard loom controls the up and down movement of the warp through the pattern needles. Generally, the practical pattern needles of the 1400 jacquard machine are 1480 needles, that is to say, there are 1480 kinds of movement patterns of the warp threads that can be controlled, which greatly increases Flower area.
Dobby

Dobby, the organization that uses two or more kinds of organization changes on the surface of the fabric to form a pattern is called dobby. Dobby is generally based on plain weave. Because the pattern of dobby jacquard is finer and delicate than that of jacquard, it is also commonly used in high-end bedding, curtains and so on.

△Dobby fabric

The dobby loom uses a dobby to control the lifting of the heald frames. The movement of the warp is determined by the blades in the dobby lifting the heald frames. The general dobby can only control 16 heald frames, that is, only The movement rules of 16 kinds of warps can be controlled. The patterns to be woven are relatively small. If you want to weave larger patterns, you can only realize it by enlarging the cycle of drawing in and pulling out the heddles. The dobby of the imported dobby loom can control 24 heald frames at most. But this is rare, common is 16 and 20 pieces.
Summarize

the difference

The size of the jacquard pattern depends mainly on the difference between the looms. Dobby looms can generally produce small jacquard fabrics, while large jacquard fabrics must be produced on large jacquard looms.

Jacquard fabric is a tissue with hundreds of looped warp yarns, which needs to be woven by jacquard machine. Dobby jacquard is a cotton fabric with small flower spinning weaved by a dobby loom, or small pattern fabric, dobby jacquard fabric.

Identification method

1 Type of opening mechanism:

Electronic dobby: for weaving dobby fabrics, generally the electromagnet absorbs the iron to receive the command of the industrial computer to power on and control the lifting of the palm frame.

Electronic Jacquard Faucet: For weaving jacquard fabrics, the electronic needles receive instructions from the industrial computer to control the rise and fall of each harness. Generally, the heald frame of the dobby loom is 16 to 20 pieces, and the most common jacquard faucet is 2640 needles.

2 threading fishing head:

Multi-arm drafting, the principle of drafting in the fabric structure: the warp yarns with the same ups and downs and interweaving rules are generally threaded into the same heald sheet, and can also be threaded into different heald pages, while the warp yarns with different interweaving rules must be threaded in different healds page. The drawing diagram draws at least one drawing cycle.

Electronic jacquard fish heads are fished sequentially from left to right. The above is the basic situation in the production process of jacquard and small jacquard, to help understand.

3 Identification methods of jacquard fabrics:

1. Determine the warp and weft direction of the fabric;

2. Find a complete latitudinal cycle;

3. Find out how many warp yarns of different motions there are in a complete cycle;

4. Under normal circumstances, if the number of warp yarns in different sports is less than 20, it is small jacquard, and if it is more than 20, it is jacquard. Above is only a preliminary judgment.

In the actual process, it is also necessary to analyze according to the equipment configuration of the company. For example, if a company’s dobby weaving machine is configured with a maximum of 16 heald frames, then jacquard weaving must be used to weave fabrics with different numbers of moving warp yarns. The heald density of each heald has to be considered, because the density of each heald is too large, which will lead to problems such as difficult life. For example, it is preliminarily judged that warp yarns with 20 different motions are used. The company is equipped with a dobby loom with 20 healds, but the fabric warp density is too large, resulting in too high density of each heald. . In actual work, whether it is design or sales, you can analyze and judge according to your actual situation