SU483816A3 - The method of obtaining the filter elements - Google Patents

Description

(54) METHOD FOR OBTAINING FILTERING ELEMENTS

About up to 30 °. It is also possible that semicircular, trapezoidal or triangular corrugations are used.

Next, a plastic tape with a rod device is formed into a rod having a diameter | p 8 mm. The resulting rod is divided into segments of 60-180 mm, which ensures that the thickness of the filter rods is 10-30 mm each.

Filtration elements may also be used in systems for air conditioning or for industrial gas filters, as well as part gaskets.

Approx. 1. Hofri1pO: 3.3 denier continuous acetate lacquer for one fiber with a Y-shaped cross section and a total of 48,000 denier taken out of the bale and loosened with a ripper fitted with a 1p-lofilI | A sample of loosened tow with a length of about 0.9 j4 is placed on the table. And.-Plasticized with three acetylene. Spray with a hand gun until plasticization is 7% by weight with a sheet of lightness, TiipHiMe, pHo 58 g per square meter.

Then the polo is crimped with a short 1V | belt pressing - between two heated corrugated 89X178 mm plates with 10 grooves per 25.4 mm, while the width and depth: p. And | filia is 1.52 mm.

The hoop sheet is rolled into a rod, tied with filter paper and cut into 20 mm sections, weighing 0.197 g, having a pressure of 68 mm i. Art. (measured by blowing air through a length of filter with a flow rate of 18 cm / s). When installed on standard cigarettes and cigarettes on a device that produces 35 ml of dima per expiration for two seconds during a cycle of 60 seconds, 51.9% of the smoke filter is removed from the filter.

Example 2. A corrugated tow of continuous fibers of cellulose acetate of 2.3 denier per fiber with a Y-shaped cross section and a total number of 99,000 denier is taken from KI1PY and continuously processed in a modified system of corrugated rollers.

The loosening roller.and pas: the key is passed through the drive gap and is punched into the gap between a pair of grooved rollers, while the 1 st stylized, the 5 turns from a loose ribbon consisting of continuous, long-lasting, Sharpen unrelated fibers into a corrugated sheet by sd1l.i-vanani tow - between corrugated rollers.and. At the same time, rollers with a diameter of 102 mm are used: three lengths of 406 mm with 30 grooves with a width of 0.386 mm and a depth of 0.42 mm at an angle of 30 °. The surface .rol. And | COV is heated to 130 ° at a pressure of 7.03 g / ohm per sh 5 pHiHy tapes and acles that are in the gap.

Then, a continuously corrugated sheet with a density of 75 g / l is fed through a compressing guide device for the manufacture of rods of the larirasky film filter, where

rods 20 mm long, 8 mm in diameter, weighing 0.257 g, three pressure drops of 67 mm i. Art. and smoke efficiencies of 57.9%.

It is also possible to obtain filtering elements by inserting filter materials into fabric weaving before crimping fabrics, such as carbon, silica gel, silt and others, swabs with a high absorption surface, such as granular half-green, flakes, cellulose acetate, absorption. gas or selective material scavengers. Usually, up to 20% of these materials are used in relation to the weight of the filter, preferably 5-10%.

Invention

Cinoicoi6 Preparation of filter elements: for example, for cigarettes, from, p.a: Kli cellulose acetate, Providing alignment of fibers. 1cli in a flat tape, open with a plasticizer, characterized in that, in order to increase the retention capacity of the resulting filter .ov, pa.klyu use with the denier of each thread in the range from 0.1 to 5, the total denier of a flat tape from 35.000. to 120.000 and a density of 25-175 g / m, while after coating. cellulose adatate contains longitudinal grooves with a frequency of from 5 to 80 by 25 mm and 1 mm tape.