Configuration of carding and screening equipment in filter paper production

2022-02-07 14:35:13

After the preparation of the loose refining and mixing process is completed, the uniformly mixed loose and refined fibers are transported to the cotton storage box equipment through the air distribution system, and then to the pneumatic cotton storage box equipment. During this process, the raw material forms banquet cotton of uniform thickness, which enters the carding machine with the rotation of the horizontal feeding curtain.

Carding is a key process in dryer fabric production. It further loosely mixes the fibrous raw material, removes the mixed fragments in the raw material, combs the well-mixed raw material into a single fiber state, outputs the fiber web, and then enters the next process by messing or stacking or direct connection, and receives the reinforcement of the spunlace equipment .

The main difference between straight lay lines and semi-cross lay lines is the configuration of the equipment in the combing stage. Compared with straight lay lines, semi-cross lay lines require an additional carding machine and a set of cross lay and drafters. The direct buried line requires high output, and the product's longitudinal and transverse strength ratio (MD/CD) can be controlled within the range of 1:1-5:1; therefore, in mainstream carding equipment, high-speed random rollers and high-speed double condensation rollers are used. Carding machine is a better choice. The corresponding main carding and web forming equipment includes: metering spinning opener, pneumatic cotton box, carding machine, etc. On semi-cross laid wires, the carding machine equipment is equipped with a self-leveling system in the feeding system. The system can automatically and continuously optimize the longitudinal and transverse flatness of fibers, control the gram weight of finished products online, save fibers and reduce costs; the transverse paver is also equipped with a self-leveling system, which can not only control the uniformity of net weight, but also optimize MD/CD (vertical and horizontal/intensity) uniformity of the grid. The corresponding main carding and web forming equipment includes: TMS cotton storage box, TCF air pressure cotton box, front carding machine, crosslapper, drafting machine, post carding machine, etc.

At present, the nonwoven production line can be equipped with various types of carding machines, including single-cylinder carding machine, drum carding machine, flat drum carding machine, double-drum double-doffer carding machine, and the main carding machines can be divided into two types : hood type drum card and drum card. The cover cylinder carding machine is divided into movable cover type and fixed cover type. The former is a traditional carding machine, and the latter is more suitable for carding chemical fibers. The drum carding machine is a carding machine widely used in the production of drylaid nonwovens. Card clothing, roll number, doffer number, skinning roll and work roll number, and whether there is an out-of-order mechanism, are more flexible than cover roll cards, depending on the requirements of the product program.