SU996277A1 - Method of packaging nonwoven carbonaceous materials - Google Patents

Description

(54) METHOD FOR PACKING NONWOVEN CARBON FIBROUS MATERIALS

one

The invention relates to the packaging of fibrous materials, and therefore to the method of packaging nonwoven fibrous carbon materials.

There is a method of packing graphitized felt, in accordance with KOJO-. After the high-temperature treatment, the eye strip of a voylok is rolled up into a roll, tied up with fastening material and placed in container I.

The disadvantage of this method is the low use of the tare volume, since the density of the felt in the roll does not exceed 0.1-0.3 g / cm

There is a method of packing nonwoven carbon fiber materials, including laying layers, sealing the source material by compression perpendicular to their plane, fixing the compressed package with fasteners, placing the package in a container. In this method, the packaged material is subjected to a temporary seal by compression using a hydraulic cylinder. As a result of compaction, which, as a rule, does not lead to the destruction of the original textile form of the material being packaged, the packing density increases by a factor of 2 to 2.

The disadvantage of this method is the impossibility of its use in relation to carbon fiber materials. So, carbon felt does not allow kinks with a small radius, for example less than 5 mm. In the case of uncontrolled compression, the felt is crushed to carbon powder. When uncontrolled laying of carbon felt in the package at the time of compression also occurs the destruction of the felt strip along the fold line or on the edges. In this connection, the packaging of carbon non-woven fibrous materials is carried out with virtually no change in their density, which increases the production costs of packaging, transporting and storing products.

The purpose of the invention is to increase the packing density of carbon fiber materials without destroying their textile form.

Claims (2)

The goal is achieved by the method of packing nonwoven carbon fibrous materials, including repeated zigzag laying of layers, their compaction with compression, fixing the resulting compressed package with fasteners, placing the package in a container, compressing a foot section 10-50 mm from its edges, moreover, the compression is carried out under a load of 0.1-90 kgf / cm. FIG. 1 shows a method for stacking a strip of non-woven carbon material in a stack, side view; in fig. 2 - section of the foot, subjected to compression; in fig. 3 - compacted stack of materials, fixed in a compressed state with fasteners. Packaging is performed as follows. In the packaging device, which is a box 1, having in its lower part a supporting platform, a stop 2, a fastening reel 3 is placed, for example a wooden one, and on it a strip of nonwoven material 4 is formed in a zigzag-shaped bend 5. A foot 5 from above they impose a second fixing grid 6, orienting it in such a way that the edge of the grid 6 is separated from the edge of the foot 5 from the bends of the strip 4 by at least 10-50 mm. For the time of formation of the foot 5 inside the box 1, removable inserts (not shown) can be placed on the supporting platforms 2, ensuring alignment of the dimensions of the foot 5. After these operations, the foot 5 is loaded with a loading platform (not shown) through the upper mounting lattice 3 until a compressive force is formed 0.1 - 90 kgf / cm. To simplify the control of the compressive force and eliminate the destruction of the material, it is optimal to fill the crate 1 with material 4 to a certain point, and then compress the foot 5 until the cargo area does not lie on the supporting platforms 2. In this position, fasten together 7 (with strips, screws, loops, brackets, etc.) the top 3 and bottom 6 fastening grids, then remove the load platform and remove the finished package, pushing it out of the box 1. To protect the bend points of the nonwoven strip, the package can be supplied on additional limiters or placed in the shipping container box. Instead of mounting grids 3 and 6, solid plates can be used. The use of a flexible element, for example a fabric, a film, is possible, however, in this case, some bending of the package occurs, especially at high compressive stresses. The imposition of a compressive load on the foot with a deviation of 10-50 mm from the edge-bend provides self-distribution of bending forces on the bend of the strip of material and prevents its destruction. At a distance of less than 10 mm, non-woven material with a thickness of 3-5 mm is destroyed in more than 50 ° / o cases of packaging. A distance of more than 50 mm leads to the formation of a large fringe at the ends of the package, making it difficult to place the package in a shipping container. The use of compressive forces of less than 0.1 kgf / cm does not lead to sufficient compaction of the foot 5, and an increase in the compressive force above 90 kgf / cm2 leads to self-destruction of the carbon nonwoven material. It should be borne in mind that as the temperature of heat treatment of the carbon nonwoven material increases, the upper limit of the compressive force must be reduced. So for carbonized nonwoven material NTM-100 (heat treatment temperature 1200 ° C) compression is possible with a force of 90 kgf / cm, and for VINN-250 material graphitized at 2500 ° C, the maximum compressive force should not exceed 50 kgf / cm. The proposed method provides an increase in the packing density of materials without destroying their textile form and can be used in the electrical industry, for example, in the production of carbon thermal insulation materials. Claims The method of packing nonwoven carbon fiber materials, including repeated zigzag laying of layers, their compaction with compression, fixing the resulting compressed package with fasteners, placing the package in a container, characterized in that in order to increase the packing density of materials without destroying their textile form, the area is compressed of the foot, 10-50 mm away from its edges, and compression is carried out under a load of 0.1-90 kgf / cm. Sources of information taken into account in the examination 1.Patent of France No. 2441547, cl. In 65 In 63/02, published. 1980 2. USSR author's certificate number 362770, cl. B 65 N 31/04, 1971.