skip to Main Content
The Complete Guide To Cotton Opener

The Complete Guide to Cotton Opener

What is meant by cotton openers?

The primary goal of a cotton opener is to loosen and remove impurities from raw materials. Opening machine raw cotton opening and impurity removal effect process is complementary to each other, the raw cotton loose into small cotton bundle at the same time, so that the fiber and impurities separation, through the mechanical stray part to complete the impurity removal effect.

1. The cotton roll composed of fibers sent by the cotton cleaning process is carefully opened and separated before the fiber is damaged, so that the fiber bundle is separated into a single fiber.

2. Get rid of impurities in cotton rolls, such as broken seeds, seed crumbs, infertility seeds, soft seed skins, dust, non-spinning fibers, fiber bundles that can’t be combed open and fibers adhering to impurities, and have the ability to recover spinnable fibers in the process of removing impurities.

Characteristics of cotton opener

1. Use large rolls and several small rolls to rotate and bite at a low speed of 1400 RPM to comb raw cotton tens of thousands of times without damaging raw cotton.

2. Automatic cotton feeding device, safe and simple operation, long continuous running time, low maintenance rate.

3. Seamless steel pipe main roller and several rolls combined, slotted winding imported special rack, the main roller adopts high-speed electronic dynamic balance processing, error is only 0.1-1g, to ensure that the machine runs more stable, no vibration, the overall service life is longer, the maintenance cost is lower.

The main task of the cotton opener

1. Cotton opening: loosen the pressed raw cotton into smaller cotton blocks or bundles for smooth mixing and impurity removal.

2. Cotton cleaning: remove most impurities, blemishes and short fibers not suitable for spinning.

3. Roll: Make a certain weight, length, uniform thickness, good shape cotton roll.

4. Cotton mixing: fully and evenly mix raw cotton with different components, which is conducive to the stability of cotton yarn quality.

Cotton opening machine slotted winding imported special rack, the main roller has been high-speed electronic dynamic balance processing, error is only 0.1-1g, to ensure that the machine runs more stable, no vibration, the overall service life is longer.

The composition of cotton opening machine

1.Grab cotton machinery: tear from the cotton bag, grab cotton block.

2.Cotton mixing machinery: the raw materials are fully mixed, both loosening and impurity removal function.

3.Loosening and impurity removal machinery: the use of various parts of raw materials for loosening, impurity removal.

4.Cotton cleaning, winding machinery: more detailed impurity removal, made of uniform cotton roll.

Classification of cotton openers

1. The opening way of six roller opening machine and porcupine opening machine: free opening and holding opening, holding opening is stronger than free opening.

2. The opening principle of six roller opening machine: from the bottom up into 45 degrees in turn, the speed increases in turn. When the beater blade is inserted into the cotton bag pressed by the rib through the rib gap and grabs the cotton block, the opening effect is realized.

Difference between cotton opener and  carding machine

Carding machine is a common equipment in textile factories, used for spinning thread, in order to spin out of the thread without fork, so the carding machine when carding cotton is parallel carding at the same time to remove the cotton fiber at both ends of the hook, if the carding machine to carding cotton quilt, it is easy to separate and the quilt is easy to bind the phenomenon, carding cotton to cotton loss is larger. The positioning of the cotton opener is to separate the hardened cotton. This process only plays a role of separation, and does not deal with the cotton fiber itself.

Operation process of cotton opener

1. When feeding, the chemical fiber should be shaken loose and evenly placed on the feeding curtain. It is not allowed to be too high, which cannot exceed the height of the iron plate on both sides of the frame of the cotton opening machine, so that it is evenly fed. The bulk of the single piece of material shaken off on the conveyor belt shall not exceed one kilogram, and ensure that the material for the carding machine is not interrupted.

2. When producing products, there can’t be two kinds of materials together into the formation of mixing, leading to defective products.

3. In the production, measure whether the discharging weight of the hopper is consistent with the set weight in practice at irregular intervals, and deal with any fault in time to maintain the correct ratio of product materials.

4. If the material is found to have bad smell, moisture, mildew, black spots, oil stains, impurities, etc., it should be stopped immediately and stated in time.

5. Make even use of flowers. Clean chemical fibers that fall on the ground or in the machine belly must be picked up and used accordingly to avoid waste.

6. Open the belly of the cotton machine and clean the dirty chemical fiber from the equipment on the ground, and put it in the designated bag for collection and disposal.

7. Check whether there are metal substances on the coarse loose and fine loose suction iron from time to time, and remove them, especially when you hear the metal impact sound in the cotton pipeline, you must check the suction iron, and you must check the debris, in case of input to the carding machine.

8. Timely remove the blocked flowers, hanging colors in the cotton storage box and cotton return box of the cotton opener, as well as foreign bodies at the head of each shaft, place materials and tools according to regulations, and keep the equipment and the ground clean and tidy.

9. When peculiar smell and abnormal movement of the motor, rotating parts and bearings are found, carefully observe and immediately state.

DW7070H Lab Opener


DW7070H Lab Opener is used to make opening and scotching raw cotton to be monofilament and remove the impurities. It’s the ideal system for teaching, researching, etc.


  • The equipment mainly consists of feeding plate, feeding roller, mote knife, licker-in, waste chamber, cotton chamber, etc. All metal structure, sturdy and durable;
  • Well combined mote knife and licker-in, make the carding more effective;
  • Waste chamber located at the bottom of the machine, equipped with lighting function;
DW7070H Lab Opener
DW7070H Lab Opener

  • It is divided into three motor controls and one lighting control. The three motors correspond to “Work”, “Input” and “Feed” processes respectively;  PLC + touch screen control, easy to learn and operate;
  • High integration of mechanical and electrical, stable and reliable;
  • Electrical integrated control, easy to maintain.
  •  With emergency stop button;
  •  Four wheel feet, free to move.


Control system PLC + touch screen
Applicable fiber length 20~50mm
Feed volume 0.5-1kg/h
Feed roller diameter Φ57mm
Licker-in sizeΦ238mm*330mm
Licker-in speed900rpm
Power supplyAC380V, 50Hz, 3phase
This Post Has 5 Comments

Leave a Reply

Back To Top