KR101407081B1 - manufacturing method of pallet for molding material using wasted-fishing gear - Google Patents

Abstract

It is an object of the present invention to recycle a waste fishing net including a rope and a net which is subjected to waste disposal to be used as an injection raw material for various products in industry. According to an aspect of the present invention, there is provided a method of fishing a fishing boat, comprising: collecting a fishing net including a rope made of polypropylene and a fishing net; Removing foreign matter adhered to the collected fish catch; Cutting the debris-removed waste fish; Washing the truncated fish catch; Drying to be within a moisture content of 0-3%; Melting the waste fish; And a step of processing the molten melt into pellets. In the step of cutting the debris from the debris, the length of the cut is 1 to 20 centimeters, and in the step of drying, And the moisture content is 0 to 3%. In the drying step, the drying method is characterized in that the drying method is performed by using superheated steam in the superheated steam chamber. After the step of melting the used fish meat, And further comprising a fusing step of filtering the molten metal from the filtering net. After the fusing step of melting the molten metal and filtering the molten molten metal from the filtering net, the molten metal is melted once more, And further comprising a step of filtering the molten molten material from the molten metal by melting the molten molten metal, Thereafter, once molten and then further filtered to give 2 drive in a finer sieve than the previous step manure, to 3 again to melt away characterized in that it comprises the steps that three filter drive from a finer sieve than the second manure.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method for manufacturing an injection material pellet using a closed-

The present invention relates to a method for producing pellets for an injection material utilizing a closed mouth.

[Patent Document 1] Patent Registration No.: 10-0097659 (Registered Date: Apr. 1, 1996)

[Patent Document 2] Patent Publication No.: 10-1997-0005555 (Published Date: Feb. 19, 1997)

Among the instruments used for fishing, ropes and nets are generally made of 100% PP material. These ropes and nets are disposed of in large quantities in fishing villages when they have reached the end of their useful life of about two years. In this case, the waste of rope and netting is large in quantity, and there is a difficulty in recycling treatment because salt and seaweeds and shellfish are mixed. And there is a limit in that the processing and facility cost for recycling processing are expensive and recycled. Therefore, incineration treatment is often carried out for easy disposal. However, in this case, there arises a problem that environmental pollutants are generated

On the other hand, in the general industry, regulations on requirements for product production such as use of natural materials and recycling are gradually strengthened. In Europe, by 2015, more than 95% of the automotive industry has to meet recycling standards.

Among the fishes used in fishing villages, netting and ropes, especially ropes, are used for aquaculture, berths, foresters and dots, and are collected and disposed twice a year to prevent environmental pollution. However, fishes used in fishing villages are difficult to recycle due to their high salinity, and even if they are recycled, they are easily broken by salt. Therefore, it is difficult to recycle and dispose of a large amount of ropes every year, and the final disposal means is incineration, which causes environmental pollutants

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a waste fishing net including a rope and a net to be recycled and used as an injection raw material for various products in industry.

According to an aspect of the present invention, there is provided a method of fishing a fishing boat, comprising: collecting a fishing net including a rope made of polypropylene and a fishing net; Removing foreign matter adhered to the collected fish catch; Cutting the debris-removed waste fish; Washing the truncated fish catch; Drying to be within a moisture content of 0-3%; Melting the waste fish; Characterized in that the step of cutting the molten melt into pellets is characterized in that, in the step of cutting the debris from the debris, the length of cutting is 5 to 8 cm in length, And the moisture content is 0 to 3%. In the drying step, the drying method is characterized in that the drying method is performed by using superheated steam in the superheated steam chamber. After the step of melting the used fish meat, And further comprising a fusing step of filtering the molten metal from the filtering net. After the fusing step of melting the molten metal and filtering the molten molten metal from the filtering net, the molten metal is melted once more, And a filtering step of melting the molten melt to filter the molten melt from the molten metal, Thereafter, the molten resin is melted once more, and the molten resin is further sieved through a finer sieve finer than the preceding sieving step, and the molten resin is further melted in a third step, thereby filtering the tertiary sieve more finely than the secondary sieving.

According to the present invention, it is possible to provide a material for polypropylene injection molding at a cost of about 1/3 of the actual cost of the polypropylene, when the waste PP material of the fishing goggles produced in the fishing village is recycled and used as the pellet for the injection molding of the PP material In addition, there is a great effect in the industry that can greatly reduce the cost of the processed product. In addition, the recycling of such waste fishing gear can increase the recycling rate of resources, and various effects that can prevent the mass production of environmental pollutants generated in incineration disposal .

1 is a view for explaining a manufacturing method of the present invention
2 is a view illustrating the pellets produced by the present invention

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Among the fishing gears such as ropes and nets, the rope is made of almost 100% polypropylene. The present invention provides a method for producing an injection material chip of PP material using the same

The process according to the invention is as follows

As shown in Fig. 1, the ropes are collected to remove foreign materials such as crustaceans and cut according to specifications. The cutting is preferably performed, for example, at about 1-20 centimeters, preferably about 6-7 centimeters. Cutting will naturally loosen the rope in the process

It is then washed to remove foreign matter and dried to a moisture content of 0 to 3%. Drying methods include gas and electricity drying methods, but they are disadvantageous in that the fuel cost becomes high. Another method is the natural drying method, which has a disadvantage in that it is difficult to rapidly reduce the moisture content of the rope and significantly lower the moisture content

As a suitable drying method devised for this purpose, a drying method using heated steam can be used. Drying with superheated steam is more preferable because it is possible to perform decolorization, deodorization and cleaning function to remove saltiness. When the superheated steam is blown out of the overheated steam room through the overheated steam or the overheated steam passing through the sieve washed in the superheated steam room, the evaporation drying occurs rapidly. According to the superheated steam drying method, rapid drying is possible, the amount of heat required for drying is small, and the moisture drying efficiency is excellent at 2% or less.

And melts the dried material. Melting temperature is about 170-200 degrees Celsius. Since the melting point of polypropylene is 160-170 ° C, it melts at a temperature higher than this temperature. It is not preferable since the physical properties of the polypropylene are changed when it is melted at a temperature of 200 DEG C or more and the melting point is increased due to heating at a higher temperature in the subsequent molding step and the raw material cost of the processing heat source is increased

On the other hand, it is more preferable to add a coloring agent upon melting to melt it. Because the melt does not emit clean white due to contamination, it is melted by, for example, a dark color system, ie a black colorant such as carbon black or mastermeth black. It is of course possible to color with various other desired colors.

The melt is primarily filtered through a net to remove lumps and foreign matter to prevent lumps. Although there is a washing and drying process in the previous process, there still remains much foreign matter in the rope. Since the inherent properties of the polypropylene are changed when such a foreign matter is contained, it is very important to filter the foreign matters to maintain the inherent properties of the polypropylene.

Another reason for filtering in the screen is that when the melt is injected in the injection molding machine, the melt flows smoothly through the inner mold, and a desired molding is performed. If the melt has foreign matter or a lumpy substance, the flow of the melt is not smooth, And the internal pressure is generated to cause breakage of the equipment, and vapors are generated in the flow of the molten metal to cause an abnormality in the injection material such as cavitation, which is filtered out.

Therefore, the operation of fusing these melts is a very important function

The molten melt is then processed into granules or pellets to be used as an extrudate feedstock. An additional task for working as injection material is to control the melting point temperature required for injection during processing, which may be controlled by the addition of other compounds or compounds. That is, the intrinsic melting temperature of PP is about 160 to 170 ° C, but it is necessary to mix other materials to adjust the melting point temperature

In order to maintain the inherent physical properties of the polypropylene melt and flow smoothly in the melt, it is necessary to filter the melt. After passing through the padding network, the melt is melted again by the second order and filtered by the second smaller order. In addition, the melt can be melted once more, that is, melted three times, once again in the ultra-fine network, and the melt can be almost completely removed from the impurities to prevent the generation of PCI.

The filtration of the melt is preferably performed at a mesh size of 50-150 mesh, preferably 100 mesh, second mesh 150-250 mesh, preferably 200 mesh, third mesh 250-350 mesh, preferably 300 mesh mesh, Can maintain

When the melt is to be used in the room, it is preferable to use the melt which is melted 3 times and filtered through the No. 3 sieve. In manufacturing pellets for room use, if there is foreign matter, the thread is easily broken, so that it is necessary to filter out even finer foreign matter.

And it cools it

Fig. 2 illustrates the melt obtained in this way into a pellet shape. Since various types of methods and apparatuses are disclosed as a method of processing a liquid material into a pellet form, detailed descriptions of apparatuses and manufacturing methods are not specifically described.

When the PP pellets are produced by using the above-described manufacturing method, it is possible to remarkably reduce the cost of raw materials by using the PP pellets as a melt molding material, especially in various industrial products that require PP material, It is effective.

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Claims (8)

Collecting a fishing net including a rope made of polypropylene and a fishing net;
Removing foreign matter adhered to the collected fish catch;
Cutting the debris-removed waste fish;
Washing the truncated fish catch;
Drying the water of the washed waste fish;
Melting the waste fish to produce a melt;
And a primary filtration step for filtering the molten melt from the screen,
Wherein the coloring agent is melted when the molten metal is melted. The method according to claim 1,
Wherein the length of cutting is 1 to 20 centimeters in the step of cutting the foreign material-removed waste fishes. The method according to claim 1,
Wherein the water content in the drying step is 0 to 3%. The method according to claim 1,
Wherein the drying step is performed by using superheated steam in a superheated steam room to dry the raw material pellets delete The method according to claim 1,
A step of melting the molten molten material in the molten metal to melt the molten molten material in the molten metal, and further melting the molten molten material in the molten metal, A method of manufacturing an injection pellet. The method according to claim 6,
After the first molten step of melting the molten molten material and filtering the molten molten material through the molten metal, the molten molten molten molten material is melted once more, and then the molten molten material is further melted by a finer sieve mesh than the previous molten material step, And a third step of filtering the raw material pellets from the filter net. 8. The method of claim 7,
Wherein the primary filtration is performed at a filtration rate of 50-150 mesh, the secondary filtration is at 150-250 mesh, and the tertiary filtration is at a filtration rate of 250-350 mesh size.

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