KR20100031791A - The preparation method and devices of the recycling plastic products by the used vinyl compounds - Google Patents

Abstract

The present invention is to produce a recycled plastic products by using a press method or an extrusion molding method using PE, PP, and mixed waste vinyl (living waste vinyl waste) as a main raw material and wood flour, rice straw and chaff as a filler It's about things. At this time, the mixed waste vinyl is modified to facilitate the molding process, thereby reducing the manufacturing cost and improving the quality of the final product. The present invention is characterized in that to improve the device at the same time to modify the mixed vinyl compound to achieve this whole process.

Description

The preparation method and devices of the recycling Plastic products by the used vinyl compounds.

The present invention is a technique for chemically modifying mixed vinyl and mechanically improving the device to finally produce the desired product. And mixed vinyl (living vinyl garbage) is discharged by mixing various vinyl bags including food packaging bags and ramen bags, so the smell is very bad when stored. In order to remove the odor of the household vinyl waste, it is put into the outdoor heating stirrer 10 as soon as the household vinyl waste arrives to be melted so as not to allow time for the odor to stay in the factory. It is characteristic.

Conventional plastics technicians have only used a single type of plastic. Because other types of plastics are difficult to mix or chemically react, they have never been put into a tank and have never tried any treatment, so they have never been processed in a tank when the plastic is melted. Only the method of forcibly melting by screw shaft has been used. Melting by this heated screw has been applied to almost all molding machines for plastics, in particular the injection and extruders of plastics use this method. The present invention allows plastics to be melted and reformed together with other compounds in a tank. In addition, the method of melting plastic in this tank eliminates the need to pile up household vinyl waste in the plant, which can prevent the plant from smelling bad.

First, a mixture of various vinyl compounds does not mix or react with each other. When heat is melted by applying various kinds of mixed vinyl compounds, they seem to be melted into one, but they have a property of separating vinyl compounds of the same component from each other.

Second, most of the mixed materials of household vinyl waste are mostly general purpose plastics such as PE and PP, and the melt viscosity of these general purpose plastics is so high that when the filler is mixed, the melt viscosity of the mixture becomes very high, making it difficult to work. In this case, the manufacturing cost is high and there is a problem that it is difficult to meet the physical properties required as a product.

Thirdly, when the household vinyl waste is piled up in a factory to use as a raw material, it causes a bad smell, which causes not only the factory but also damage to people around it, making it difficult to operate the factory.

The first and second problems described above are chemical methods that use compounds capable of modifying mixed vinyl mixtures to modify them to physical properties that give compatibility between different vinyl compounds and at the same time lower the melt viscosity. The work performance and manufacturing cost were reduced.

In addition, the odor problem of household plastic garbage was solved mechanically. The problem was solved by not putting the living vinyl waste immediately into the outdoor heating stirrer 10 installed in the outdoor place so that the smell does not give time to stay outside the factory. When the household vinyl waste is put into the outdoor heating stirrer 10, fly ash, wood flour, rice straw, rice husk, EVA, rosin, etc., lowers the viscosity of the softening point and stirs well, and mixes the substances that can adsorb or deodorize the odor. And stirred by heating.

In any case, the above problem cannot be solved only chemically and only mechanically. In other words, the chemical and mechanical methods can be used simultaneously to solve the problem.

When the plastic recycled product developed in the present invention is commercialized, at least half of the timber consumed in Korea is reduced at the same time economically, resulting in the effect of preventing the deforestation of the earth. .

1 shows a series of device systems. In FIG. 1, the outdoor heating mixer 10 installed outdoors is a material capable of adsorbing or deodorizing mixed waste vinyl, which is a living vinyl waste transported from the outside, with a small amount of fly ash, wood meal, rice straw, and rice hulls. In addition, a small amount of EVA, rosin, rosin ester, and the like is added to lower the viscosity of the softening point, and the mixture is heated and stirred at 170 to 190 ° C. for at least 2 hours, and then sent to the reforming reactor 2 through the transfer pipe 3. Compounds introduced into the outdoor heat mixer 10 are preferably used in order to lower the odor and melt viscosity of the mixed waste vinyl. In addition, the remaining amount that cannot be digested in the reforming reactor (2) is to be stored as a pallet.

In the reforming reactor (2), wood flour, crested rice, chaff, EVA, rosin, rosin ester, thermoplastic elastomer (TPE, Thermoplastic Elastomer), and oil are quantitatively added according to the properties of the desired plastic recycled product. After sufficiently heating and stirring for more than enough time to sufficiently modify the physical properties of the mixed vinyl, it is transferred to the extruder hopper 6 and molded in the extruder 7. If the reforming reactor (2) is very large compared to the extruder hopper (6), it is preferable to keep the residence time of 2 hours or more by using one as small but two as small. In other words, the one or more reforming reactors 2 means that the residence time in the stirrer should be sufficient for 2 hours or more, but there is no other mechanical reason. And the residence time is adjusted via the valve (4). And the joint joint (5) means that the extruder (7) and the reforming reactor (2) can be separated independently to function independently. In the present invention, the outdoor heat mixer 10, the reforming reactor 2, and the extruder 7 shown in FIG. 1 are characterized by being composed of a series of device systems as separate independent devices.

Table 1 expresses FIG. 1 more briefly, and Table 2 shows that the manufacturing method of the present invention is applied not only to extrusion but also to press molding.

Table 1

Table 2

The compounds introduced into the reforming reactor 2 will be described in more detail as follows.

Among the compounds introduced into the reforming reactor (2), 10 to 60 parts by weight of PE, PP and mixed waste vinyl (living vinyl waste) are used as the total weight ratio, and one or two or more powders, wood meal, rice hulls, or crests as a filler. It is characterized by using in 30 to 90 parts by weight as a total weight ratio using. Here, powdered plastic products such as flooring, which require weight, are mainly used for powdered flour, but in most other cases, it is preferable to use wood flour having a low specific gravity.

It is preferable to use 1 to 30 parts by weight of one or two or more mixtures of rosin, rosin ester, and petroleum resin as a resin that serves as an adhesive to bind the materials to modify the physical properties of the above-mentioned mixed waste vinyl. Do. Here, the petroleum resins are manufactured by Kolon Oil Co., Ltd. in Korea. There is and is not limited to this.

In order to reinforce the elasticity of PE and PP plastic, it is preferable to use 0 to 15 parts by weight of one or more mixtures of EVA or thermoplastic elastomer (TPE, Thermoplastic Elastomer) based on the total weight ratio. The thermoplastic elastomers include BR (butadiene rubber), CR (chloroprene rubber), SBR (styrene-butadiene rubber), EPDM (ethylene-propylene- diene rubber), EPM (ethylene-propylene rubber), and NR (isoprene rubber, natural rubber) ), But are not limited to this.

And in order to further improve the adhesion and elasticity, it is preferable to use a compound of DOP, asphalt, and oils that act as a plasticizer and use 0 to 10 parts by weight as the total weight ratio. The oils include, but are not limited to, mineral oils, linseed oil, turpentine oil, paraffin oil, and soybean oil.

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Claims (5)

According to the present invention, PE, PP, and mixed waste vinyl (living vinyl waste), etc. are selected from one or two or more mixtures as main raw materials, and one or two selected from stone powder, wood flour, rice husk, rice straw, etc. as a filler. , Which relates to the manufacture of plastic recycled products using an extrusion molding method, in which a chemical method and a mechanical method are simultaneously applied to the manufacturing method and a series of device systems to prevent odors in the manufacturing process. It is about. The chemical method is to mix the resin-based compound, EVA resin or thermoplastic elastomer resin, and DOP, asphalt, and oil compounds as plasticizers in order to modify the properties of mixed waste vinyl, as follows. Main raw material: 10 to 60 parts by weight Filler: 30 to 90 parts by weight Resin-based compound for modifying physical properties: 1 to 30 parts by weight Resin which gives elasticity: 0-15 weight part Plasticizer: 0 to 10 parts by weight Method for producing a plastic recycled product, characterized in that consisting of the composition. The method of claim 1, wherein the resin compound is a rosin, a rosin ester compound, or a petroleum resin. The method of claim 1, wherein the thermoplastic elastomer, butadiene rubber (BR), chloroprene rubber (CR), styrene-butadiene rubber (SBR), ethylene-propylene-diene rubber (EPDM), ethylene-propylene rubber (EPM), and NR (isoprene rubber, natural rubber), etc. The production method of plastic recycled products, characterized in that using one or more. The method of claim 1, wherein the oils are mineral oil, linseed oil, terebin oil, paraffin oil, and soybean oil, and the like. 2. The apparatus system of claim 1, wherein the mechanical method comprises an outdoor heat mixer (10), a reforming reactor (2), and a device such as an extruder (7) or a press selected from one or more selected groups.

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