KR100186945B1 - Manufacturing method of the recycling material from the waste wood and plastic film - Google Patents

Abstract

In the present invention, a method for producing recycled building materials using waste wood bamboo material and waste thermoplastic resin film is disclosed.

According to the manufacturing method of the recycled building material using the waste wood ash and waste thermoplastic resin film of the present invention, the step of dry heat treatment the waste wood ash of the present invention, the step of coarsely crushing the waste wood wood ash by a shredder, the coarse wood waste wood To fine powder with a fine grinding machine to make wood powder, washing the thermoplastic resin film in an ultrasonic cleaning tank, regenerating the cleaned waste thermoplastic film to a crush state, and crushing the wood powder powder Mixing the waste thermoplastic resin film in a state with a mixing mixer; adding a blowing agent and a chemical to make a homogeneous mixture after mixing the wood powder and the waste thermoplastic resin film in the crush state; The prepared mixture by melting, kneading and homogenizing The steps for creating a molten kneaded mixture, composed of the above-homogenized melt kneaded in the step of forming the sheet-like molded article by extrusion molding means.

According to the manufacturing method of the present invention, the physical properties are improved, such as the weight is significantly reduced compared to the conventional product by the blowing agent, and it is positively applied to various industrial fields including the material industry through the use of waste materials. It is possible to promote industrial and economic vitalization. In addition, it is possible to prevent pollution by waste vinyl and to prevent forest depletion, as well as to mitigate the deepening of air pollution, thereby greatly contributing to the prevention of pollution and the protection of the global environment.

Description

Manufacturing method of recycled building materials using waste wood bamboo and waste thermoplastic film

The present invention relates to a method for manufacturing recycled materials using waste materials such as wood chips, bamboo chips, and waste vinyl discharged from farmland, industrial sites, and the like, and more specifically, in various industrial sites. Recycled waste products to produce building materials, civil engineering materials, furniture materials, housing materials, etc. to save materials and to prevent pollution of the natural environment caused by wastes. It relates to a method for producing a recycled building material using.

In the past, some of the wood waste wood from the wood mills were used as household fuel, but in most cases, it was just incinerated. Even if waste wood or waste vinyl was used for fuel, there was no significant economic benefit.

Until now, no concrete practical measures have been taken to effectively use these wastes, and waste vinyl used for household appliances such as septic tank sewage treatment supplies and waste bins, particularly vinyl chloride (PVC), is easily collected. Not only of course, incineration releases harmful substances to the human body, even if buried in the ground has a problem that does not rot for hundreds of years. In addition, it is emerging as one of the social and environmental problems in another aspect, such as illegally dumping or incineration to treat such waste wood ash and waste vinyl. Therefore, there is a demand in the society and industry for a method to usefully recycle such waste wood and waste vinyl.

Conventional techniques for solving the above problems include Korean Patent No. 25267, Waste film treatment method for recycled raw materials and apparatus thereof. According to the patent, the thermoplastic waste resin film is made into a flap or crush state using a ultrasonic mixer, a heater mixer, a green mixer, or the like, and a predetermined additive is mixed and blended and introduced into a compressor. Disclosed is a method of molding by molding means.

However, the above method has achieved its purpose in terms of usefulness of waste resin film, but it has not been applied to recycling waste wood, waste building material, pulp material and the like.

In addition, as another prior art, there is a method for producing wood powder pellets using waste vinyl (PVC). However, in such a prior art, the specific gravity of the waste vinyl used as a raw material is large, so that the wood pellets also have a large weight.

In order to solve the problems of the prior art as described above, an object of the present invention is to provide a method for producing a recycled building material using waste resin film, waste wood, construction waste wood, pulp waste and the like.

Another object of the present invention is to provide a variety of recycled building materials, such as various construction materials, civil engineering materials, plate sheets or mats by effectively recycling the waste wood wood and waste resin film.

Still another object of the present invention is to contribute to pollution prevention, environmental preservation and pollution prevention by waste through recycling of wood waste wood and waste resin film.

In order to achieve the above object, the method for producing a recycled building material using the waste wood wood waste material and the waste thermoplastic resin film of the present invention comprises the step of dry heat treatment of the wood waste wood wood, the waste wood wood ash coarsely crushed to a predetermined size by a crusher (組分) Iii) making the finely divided wood powder by using the finely ground waste wood flour, pulverizing the waste thermoplastic resin film in an ultrasonic cleaning tank, and cleaning the thermoplastic resin film. Regeneration process to make a crush state, mixing the wood powder and the crushed thermoplastic resin film in a mixing mixer, homogenized foot by adding a blowing agent to the mixture of the wood powder and the waste thermoplastic resin film of the crush state Making a foam mixture, melt-kneading the homogenized mixture by heating to 150 ° C The step of making water, characterized in that consisting of the step of molding the homogenized melt kneaded material into a regenerated building material by the molding means.

Hereinafter, the method of the present invention will be described in detail.

First, the wood wastewood is dried in advance and then crushed to the required size after removing moisture. Waste wood ash used in the present invention includes various wood waste wood such as thinning wood and sawdust of forest, waste wood of construction charter, wood waste of pulp mill. In the embodiment of the present invention, the crushed size of the waste wood bamboo material is preferably coarsely pulverized to about 5cm. The coarsely crushed waste wood ash is dried again and then pulverized into 80-100 mesh fine powder. The reason for making the waste wood powder into fine powder is that the mixing kneading of the finely powdered waste wood powder and the resin film molecules described later facilitates the homogenization process, as well as the final product made from the mixed melt. This is to prevent problems such as strength, cracks, and appearance of the molded article.

On the other hand, the waste thermoplastic resin film is cleaned in an ultrasonic cleaning tank and regenerated to make a crushed state. The thermoplastic resin film to be kneaded with the fine powdered wood powder may be made of raw resin, but in the case of the present invention aiming at recycling of waste, a waste thermoplastic resin film is preferably used.

However, when the waste thermoplastic resin is not removed, such as foreign substances, dust, etc., the surface of the final product is likely to be scratched or cracked and eventually become a defective product. Thus, the waste thermoplastic synthetic resin film used in the present invention has a water flow (water flow). It is preferable to use a cleaning product that has been cleaned by ultrasonic cleaning by the method).

Therefore, in order to obtain a better quality recycled resin product in the present invention, after removing foreign matter from the waste resin film, a flap or crushed crushed state (flakes) of finely chopped by a completely dehydrated natural drying method.狀 Use waste plastic film recycled.

The wood powder made separately from the recycled waste resin film is mixed, melted and kneaded with the waste resin film in a crushed state at a specific ratio to homogenize, and the kneaded melt is introduced into a molding means to be molded into various products.

The two raw materials, ie, wood powder and waste resin film, are mixed by a mixing mixer, and additives are added together as necessary when mixing these raw materials, so as to be a homogeneous material in a soft phase, a crystalline phase, or a foamed phase. Unite. Chemicals used as additives when kneading by the mixed mixer include caking additives, plasticizers, modifiers, foaming agents, flame retardants, and the like. By mixing and adding such additives in an appropriate ratio, the physical properties of the final product can be arbitrarily changed, and the strength and weather resistance of softening and hardening can also be changed.

Regarding the foaming agent, in the conventional technique of mixing and kneading wood powder and PVC to produce a sheet-like product or a molded article using the same, the specific gravity of PVC is 1.3, which is large, so that the weight of the final molded product is too much There was a heavy problem, and this causes problems such as deterioration of work efficiency due to weight when the final molded product is used in various industries.

Therefore, in the present invention, the specific gravity of the mixture is lowered by adding a blowing agent when mixing and kneading the powdered wood powder and the waste resin film. Due to the change in the physical properties by the addition of such blowing agent, the weight of the final molded article is significantly lower than that of the conventional products. In addition, as the weather resistance improving agent, DOP and the like may be used, and in addition to the blowing agent or the weather resistance improving agent, if necessary, a predetermined ratio of a predetermined additive such as a caking agent, a gas agent, a modifier, or a flame retardant and a softening / hardening strength modifier together with the blowing agent may be used. By adding this, various physical properties of the final product can be selectively changed.

On the other hand, the mixture homogenized by the mixing mixer is put into a pressure kneader or a bumblling mixer, heated at a constant temperature to melt, kneaded and homogenized. The homogeneous molten kneaded product is formed into pellets and subsequently melted again, or the homogenized molten kneaded product is formed into a sheet- or mat-shaped final molded product directly by forming means, or a foreign material extruded product (異 物 壓 出品) It can be molded into various molded articles.

Illustrative examples of the present invention are as follows.

First, various waste resins such as vinyl chloride film, EVA, PP, ARS film, and the like are cleaned as a waste thermoplastic resin by a special water circulation system by the above-mentioned ultrasonic cleaning device. The resin waste thus cleaned is completely dehydrated by high speed dehydration and then dried. Drying is also possible by drying with a high temperature dryer, but in this case, the dried film is easily damaged, so in the embodiment of the present invention, a low-temperature drying method is used to make a high-quality waste film from which foreign substances are removed. The dried waste film is mixed and kneaded with a mixing mixer to obtain a flap or crushed waste resin film recycled product.

On the other hand, the waste wood bamboo material is made of waste wood bamboo material which completely dehydrates the water in the steam dryer, and is made into a size of about 5cm by a crusher or a wood mill, and then made into a fine powder powder of 80-100 mesh wood powder. .

The crushed waste resin film recycled product and wood powder powder thus obtained are mixed and kneaded in a mixing mixer in consideration of the product characteristics of the desired final molded product such as 50 to 50 or 60 to 40 by weight ratio.

Next, the mixture kneaded and mixed by the mixer is melt-kneaded by heating to a predetermined temperature in a molten kneader or a snakeball mixer. In the embodiment of the present invention, the heating temperature is preferably about 160 ° C. In addition, a foaming agent is added and mixed at the time of kneading to reduce the weight of the final molded product. In a preferred embodiment of the present invention, as the blowing agent, calcium carbonate is used, in which case the foamed mixture has a specific gravity lower than that of conventional products.

The hot melt kneaded material is then made into a soft or hard kneaded material, depending on the purpose of the final product, pelletized or compressed into a calender roll, or a continuous sheet or mat using a press device or an injection extruder. Make In the case of pelletizing, it can be later melted again and molded into a continuous sheet or mat article using a calender roll, an injection extruder, or the like.

In addition, by the method of the present invention, in addition to the foam sheet and the mat, it can be produced into household goods such as household appliances such as household appliances, jangnon, etc. by the injection molding machine. Can be. The use of the molded article produced by the method of the present invention is very diverse and listed as follows by applicable industries.

-Wood Tile field: interior building materials, flooring materials, wall materials, ceiling materials, etc.

-Wood building materials: interior building materials, closet materials, etc.

-Wood film materials: interior materials, furniture, wall materials, floor materials, etc.

-U-dresser sector: furniture, interior materials, etc.

Fine wood field: automobile, information equipment parts, furniture, etc.

Finewood Pellets: Compound Materials, etc.

Various sheet-like or mat-shaped final molded products recycled by the manufacturing method of the present invention have excellent properties such as water resistance, weather resistance, elasticity, and touch of wood, compared to products of wood or synthetic resin of the prior art, In particular, the physical properties are remarkably improved such that the weight of the blowing agent is significantly reduced compared to the conventional products.

In addition, the present invention can provide a cheap material by using the waste material can reduce the manufacturing cost has a significant economic effect, and also the quality of the produced product is excellent.

In addition, it is possible to recycle industrial resources, which can help to conserve materials, and to reduce pollution of the air and to protect the global environment.

Claims (9)

Dry heat treatment of the wood waste wood, coarsely pulverizing the dry heat-treated waste wood wood to a size of 5cm by a crusher, the step of making the fine powder wood powder with a fine mill, the waste thermoplastic resin film ultrasonic Washing in a washing tank, regenerating the cleaned waste thermoplastic film into a crushed state, mixing the wood powder and the waste thermoplastic film in the crushed state at a weight ratio of 5: 5 to 6: 4 Mixing in a mixer, adding a blowing agent and a chemical to a mixture of the wood powder and the waste thermoplastic resin film in the crushed state to form a homogeneous foam mixture, and heating the homogenized mixture with a pressurized melter to melt it Making a kneaded material, the homogenized melt kneaded material is A method for producing a recycled building material using waste wood bamboo and waste cheap plastic resin film, characterized in that the step consisting of forming a raw building material. The method of claim 1, wherein the blowing agent is calcium carbonate. The method of claim 1, wherein the chemical agent comprises a modifier, a caking additive, a plasticizer, a flame retardant, a weather resistance improving agent. The method of claim 3, wherein the weather resistance improving agent is DOP. The method of claim 1, wherein the heating temperature in the step of making the melt-kneaded material is 160 ° C. The method of claim 1, further comprising the step of pelletizing the melted kneaded product between the step of making the melted kneaded material and the forming step, wherein the homogenized melted kneaded material of the forming step is formed by melting the pellets. Method for producing a recycled building material using waste wood bamboo and waste thermoplastic resin film, characterized in that. The method of claim 1, wherein the waste wood bamboo material comprises forest thinning wood, sawdust, waste wood of the construction site, waste wood piece of pulp mill. The method of claim 1, wherein the wood powder is manufactured in a state of 80-100 mesh. The method of claim 1, wherein the forming means is selected from a calender roll device, a press device, and an injection extruder.