SU395538A1 - METHOD OF MANUFACTURING CARDBOARD FOR DRY-DRIVE VARIOUS GINA DRIVES - Google Patents

Description

one

This invention relates to a method for making cardboard for valine gin drum disks and the like clap-to-cleaning products.

Technical leather is used to make the disks of a drum gin. However, animal fat in the skin adversely affects the performance of the roller gin and the life of the drum.

Rubber is used for the same purpose. This P031volves to make the discs more elastic and increases the srack of their service. However, the work roll of a roller gin is covered with fiber, as a result of which productivity is reduced (durability. In addition, rubber softens and smears

FIBER.

According to the proposed method, cotton fragments are crushed to 20-25 ° TIR, kraft pulp is added to it, and the pulping is brought to 40-45 ° SR, due to which the nose weighs the weight of the primary cotton processing, into one material and kenaf fibers, from; crushed to 20–40 long lengths, followed by molding, pressing under a uniformly increasing pressure from 50 to 300 KzlcM and drying.

The technopic irodess of making the proposed paperboard is as follows. First, take 28-ЗО / о in terms of the absolutely dry weight of cotton tarn,

grind to 20–25 ° SR, add 28–29% Kraft pulp, grind to 40–55 ° SR, and add 8-lOVO cotton pretreatment waste. Mass sizing rosin-bitumen asley in 1 amount

 by weight of absolutely dry fiber. Deposition, glue is produced by aluminum and alumina in alum in the amount of the weight of absolutely dry fiber or an equivalent amount and eats, in m.

All listed operations are performed.

at that (boiled roll. In another roll, kenaf is prepared, grinding it to 20-40 mm in length. After that, crushed kenaf in the amount of 25-30 / o is added to the above prepared mass.

The resulting mass is mixed in the pools and served on a stick machine, where it is cast in the form of sheets from a number of elementary

layers. Then they are pressed in lressa at the same time with 120-150 sheets with gaskets between them with increasing pressure at a pressure of from 50 to 300 .m for, for example, half an hour, and then dried in gels

until AIR-DRY condition. 3 The presence in the carton of the pipe makes it “exept-I1mu10 elasticity, cellulose creates mechanical strength, and the fibers of kenaf, in one form, ensure the purification of chloeka. The presence of binder of bitumen and califol is predicated to create hydrophobicity in humid air conditions. The discs of the proposed cardboard are more durable than the fabrication of leather, they increase the performance of the drum by 10-15%. In addition, the drum with discs made from the proposed cardboard is cheaper by 7-8 times. 4 E and e, d. M et, and z o b r e e: i and Opoz-b manufactured-forn cartoons for valine-gin drum disks, characterized by a time that the cotton slurry is shredded to 20- 25 ° ShR, Kipa jt cellulose is added to the inactivity and it is crushed: 1x dsod to 40-75 ° ShR, after which the waste is introduced into the mass with primary workings: cotton, green material, and kenaf drawn, ground up to 20-40 mm in length, with its subsequent forming, pressing under uniformly increasing pressure from 50 to 300 kg and drying.