KR100631328B1 - Elastic pave material comprising plastic resin chip - Google Patents

Abstract

The present invention relates to a novel elastic packaging material comprising 10 to 40 parts by weight of polyurethane binder with respect to 100 parts by weight of plastic resin chips prepared using recycled and novel plastic resins, stone powders and blowing agents.

Polyurethane, Polyethylene, Polypropylene, Polystyrene

Description

Elastic packaging material including plastic resin chip {ELASTIC PAVE MATERIAL COMPRISING PLASTIC RESIN CHIP}

The present invention relates to a novel elastic packaging material. More particularly, the present invention relates to a novel elastic packaging material including the novel plastic resin chip.

Conventionally, waste polyurethane, which is an industrial waste, is a method for recycling waste tires or waste polyurethanes that have been treated without showing any useful value due to limitations such as incineration or landfilling. The use of waste tires as elastic flooring materials has been widely studied. For example, pavement materials such as sidewalks, bicycle paths, park trails, and athletic roads have been made of concrete mixed with inorganic stone and cement, or some color cones, pitcher cones, and ascons have been used. It was replaced with an elastic packaging material containing waste tires. A method for enhancing the utilization of elastic packaging materials containing waste polyurethane or waste tire has been proposed. Korean patent application No. 10-2002-0010320 provides a feeling of elasticity when walking using waste polyurethane and emits phosphorescence. The present invention discloses a packaging material and a method for manufacturing the same, which provide a clear view to pedestrians and drivers even in dark nights or rainy days without light by significantly reducing the risk of a safety accident. In addition, Korean Utility Model Application No. 20-2003-0022152 discloses a method of additionally including a functional material such as charcoal in the packaging material.

Korean Patent Application Nos. 2002-10319 and 2002-10320 propose a method of mixing waste polyurethane with fine aggregates to solve the settlement problem of ground that can occur without concrete pre-installation without concrete pre-installation. By doing so, the use range of the waste polyurethane was extended to the ground. The invention is flattened by crushing the factory, and after the primer is installed, the waste tire rubber chip 10-30 (grain) (gravel) with average particle diameter of 6-10mm and ground to 70-80 parts by weight and 4-8 mm particle diameter A lower support layer material mainly containing parts by weight and an upper elastic layer material mainly containing waste urethane color rubber chips cut to a length of 3-4 mm are prepared, respectively, before pouring the lower support layer material and curing the lower support layer material. It consists of a method of constructing a permeable elastic packaging material, characterized in that the upper elastic layer material is poured directly.

In addition, a method of using an elastic composition including the waste tire or the waste polyurethane in a median separator is proposed. In this method, the waste tire rubber chips are ground parts of 0.6 mm to 10 mm in chip form, pigments 5% to 10% by weight, and urethane binder so that the central separator using the waste tire rubber chips has a predetermined shock absorbing buffer structure. An impact absorbing portion mixed with 0.5% to 20% by weight of a mixture; Gravel and stone in a ratio of 6: 4 and a weight part in which a plurality of insertion holes are formed therein by adding and stirring waste golf balls; Manufacturing a central separator having a predetermined size by fastening a mold to an outer surface of the weight part and filling liquid waste tire mixed and blended therein; It is a center separator using a waste tire chip and the installation method characterized in that the fastening of the steel pipe installed in the center of the existing separator is installed at a predetermined interval in the center of the existing road.

However, as the active use of waste tires and waste polyurethane has been widened according to the development of such active methods of use, there has been a problem that waste tires or waste polyurethanes that can be recycled are used up rapidly. Therefore, the need for the development of another elastic packaging material has been required, and construction methods related to the development of new materials have been required.

It is an object of the present invention to provide a novel elastic packaging material.

Another object of the present invention is to provide a new elastic packaging material comprising a novel plastic resin chip.

An object of the present invention is to provide a method for constructing an elastic packaging material comprising a novel plastic resin chip.

New elastic packaging material to achieve the above object

10 to 40 parts by weight of the polyurethane binder with respect to the plastic resin chip and 100 parts by weight of the plastic resin chip.

In the present invention, the plastic resin chip is prepared by adding 0.1 to 10 parts by weight of the blowing agent to 100 parts by weight of the composition to a composition consisting of 30 to 90% by weight of the plastic resin, 10 to 70% by weight of the stone powder.

In the present invention, if the plastic resin of the plastic resin chip satisfies the physical properties of the final product, and can be made of a plastic resin chip, it is not limited to thermoplastic. The plastic resin may be prepared by polymerization or condensation reaction, but not limited to, the plastic resin may be polyethylene, polypropylene, polystyrene, styrene-acrylonitrile-butadiene terpolymer (hereinafter referred to as ABS resin), acrylic resin, silicone Polymers, fluororesins, polyvinylchlorides, polyvinylacetates, polycarbonates, polyurethanes, and mixtures thereof. In one embodiment of the invention, the plastic resin can be used a new product, in terms of cost and environmental, it is also possible to use recycled resin as long as it satisfies the required physical properties.

In the present invention, the composition for producing the plastic resin chip preferably contains 30 to 90% by weight of the plastic resin. If the amount of plastic resin is small, the adhesion problem occurs, and if it exceeds, it is not expected to improve the performance and causes more economic waste than necessary.

In the present invention, the stone powder may be used conventional stone powder or functional stone powder. Although not limited, theoretically, the stone powder penetrates into the foaming pores of the plastic resin chip, and is believed to have an effect of improving the adhesion between the urethane binder and the plastic resin chip. In one embodiment of the invention the stone powder may be used calcium carbonate (bicarbonate). In addition, in one embodiment of the invention, the stone powder is not limited, but in order to impart functionality such as far-infrared radiation function and anion generating effect, ganban stone, natural jade, serpentine, kaolin, ceramic, illite, germanium, ocher, true charcoal And at least one selected from the group consisting of carbon powders.

 In the present invention, the composition for producing the plastic resin chip is preferably used 10 to 70% by weight of the stone powder. If the amount of the stone powder exceeds 70% by weight may result in a decrease in the physical properties of the product, such as tensile strength, elongation rate in relation to the adhesion problems, if the amount of the stone powder is less than 10% by weight due to the increase in manufacturing cost This can cause problems with savings.

In the present invention, the foaming agent used in manufacturing the plastic resin chip is not particularly limited as long as it can form pores in the plastic resin chip, it is possible to use a conventional foaming agent. In one embodiment of the invention, the blowing agent is ADCA (azodicarbonamide). The amount of blowing agent affects the pores of the final product, and too much or too little pore can adversely affect the physical properties of the final product. Preferably, it is preferable to use 0.1 to 10 parts by weight based on 100 parts by weight of the composition. If the amount of foaming agent is small, the elasticity of the final product may be lowered, and the amount of pores through which the stone powder penetrates may be lowered, thereby lowering the physical properties of the final product, and if the amount of foaming agent is large, the elasticity may be improved. Excessive bubbles lower physical properties such as strength and tension.

In the present invention, the elastic packaging material includes a polyurethane binder. The polyurethane binder may use a conventional binder known in the art, and there is no particular limitation. In one embodiment of the invention, the polyurethane binder is a moisture curable one part type. Polyurethane binder of the present invention comprises 10 to 40 parts by weight based on 100 parts by weight of plastic resin chips. If it is less than 10 parts by weight, the elastic force is lowered. If it is more than 40 parts by weight, the effect of increasing the adhesive strength does not appear.

In one aspect of the present invention, the elastic packaging material of the invention is prepared by mixing 10-40 parts by weight of a polyurethane binder with respect to 100 parts by weight of the plastic resin chip and the plastic resin chip.

In order to manufacture the plastic resin chip, 0.1 to 10 parts by weight of a blowing agent is added to 100 parts by weight of the composition to a composition consisting of 30 to 90% by weight of plastic resin and 10 to 70% by weight of stone powder.

The plastic chip may use a suitable method according to the state of the plastic resin. In one embodiment of the invention, in order to manufacture a plastic resin chip, it is possible to use a new resin in the form of waste plastic or pellets. In the case of using waste plastic, it is preferable to mix waste plastic resin, stone powder, and blowing agent, which are crushed to an appropriate size, in the above ratio using a conventional mixer, and then extrude using an extruder. In this case, the extrusion may use a conventional extruder, it may be extruded in the form of a sheet or pellets. When extruding into sheets, it is necessary to further grind by a grinder. The grinding is not particularly limited as long as a conventional grinder can be used. The extruder may use a twin extruder or a single extruder, there is no particular limitation. Extrusion temperature may vary depending on each plastic, and those skilled in the art can easily select the resin depending on the resin used.

Optionally in one embodiment of the invention, the plastic resin chip may use a dissolved plastic. After dissolving the plastic using an appropriate solvent, the stone powder may be mixed therewith and uniformly mixed using a mixer. In this case, the blowing agent may be added to the mixture of the dissolved plastic and the stone powder, and may be used after mixing the stone powder and the dissolved plastic uniformly and completely to prevent initial foaming. The mixture of plastic, stone powder, and blowing agent can be poured into a plate mold and processed. In this case, the shaped plate is pulverized using a conventional pulverizer and used later. Mixing can be accomplished by conventional mixers.

In one embodiment of the invention, the plastic resin chip is preferably 1 to 10 mm in size, more preferably 3 to 5 mm. If the resin chip is too small, there is a problem in production, and if the resin chip is too large, the adhesive strength is reduced.

Optionally, a pigment may be added and processed together for the coloring of the elastic packaging material in the manufacture of the plastic resin chip of the present invention. The pigment can be used that is commonly used in the processing of the elastic packaging material, there is no particular limitation. The amount of pigment may be appropriately selected for the purpose of coloring. In one embodiment of the invention, the amount of the pigment is preferably about 10 parts by weight based on 100 parts by weight of the composition of the plastic resin and stone powder. The pigment may be added to the elastic packaging material of the present invention in addition to the mixture of the plastic and the stone powder.

Alternatively, the plastic resin chip of the present invention can be used by kneading with conventional waste polyurethane chips, waste tire chips, and rubber chips. In one embodiment of the invention, it can be used in combination with 30 to 70% by weight of the plastic resin chip and 30 to 70% by weight of the chip selected from the waste polyurethane chip, waste tire chip, rubber chip. In one embodiment of the invention, the plastic resin chip of the present invention can be used by mixing in the same amount as those selected from conventional waste polyurethane chips, waste tire chips, rubber chips.

The novel elastic packaging material produced in the present invention can be packaged through conventional methods. First, pavement surface cleaning step to remove the moisture or foreign matter on the packaging surface; A primer applying step of uniformly applying a primer in order to firmly bond the packaging surface and the plastic resin chip; Mixing the plastic resin chip and the polyurethane binder in a weight ratio of 100: 10-40 to apply a uniform thickness to the packaging surface; And a voltage of 2-4 times using a constant temperature roller of about 20-30 kg, where the constant temperature roller is not touched or the surface finish is composed of a step after curing with a heated trowel.

In addition, the constant temperature roller in the construction method is used in the voltage process to strengthen the bonding of the plastic resin chip and the polyurethane binder, the temperature that the plastic resin chip and the polyurethane binder does not stick, that is, 50-100 ℃ It is appropriate to use it in the state which keeps temperature.

Hereinafter, the present invention will be described in more detail with reference to the following examples, which are not intended to limit the scope of the present invention.

Example 1

 100 kg of new HDPE (LG Chem), 1 kg of blowing agent (Dongjin Semichem: Unicell D series), and 25 kg of bicarbonate (Wujin Chemical: SW 100) were mixed in a mixer and introduced into an extruder. Extruded in the form of a flat plate, cooled, and ground to an average size of 5 mm using a second mill.

100 kg of a new HDPE resin chip was mixed with 30 kg of a polyurethane binder (hard chemical) and cured for 15 hours to a thickness of 15 mm. Physical properties of the cured block are shown in Table 1 below.

Example 2

100 kg of new polypropylene (LG Chemical), 2 kg of blowing agent, and 25 kg of heavy coal were mixed in a mixer and put into an extruder. Extruded in the form of a flat plate, cooled, and ground to a size of 5 mm with a second mill.

100 kg of a polypropylene resin chip was mixed with 30 kg of a polyurethane binder, and it hardened to 15 mm thickness for 15 hours. Physical properties of the cured block are shown in Table 1 below.

Example 3

ABS resin (Kumho Petrochemical: ABS 750) was collected and crushed with a grinder. 100 kg of the crushed ABS resin, 2 kg of blowing agent, and 25 kg of heavy coal were mixed in a mixer and put into an extruder. After extruding into a flat plate form, the mixture was cooled and then ground to a size of 5 mm using a secondary mill.

100 kg of ABS resin chips were mixed with 30 kg of polyurethane binder, and cured to 15 mm thickness for 15 hours. Physical properties of the cured block are shown in Table 1 below.

Example 4

Regenerated polyethylene terephthalate (Samyang Corp .: Green PET Flake) was collected and crushed with a grinder. 100 kg of crushed polyethylene terephthalate, 2 kg of blowing agent, and 25 kg of heavy coal were mixed with a mixer and introduced into an extruder. After extruding into a flat plate form, the mixture was cooled and then ground to a size of 5 mm using a secondary mill.

100 kg of polyethylene terephthalate resin chips were mixed with 30 kg of polyurethane binder, and cured at a thickness of 15 mm for 15 hours. Physical properties of the cured block are shown in Table 1 below.

Example 5

Polyurethane (Blast Korea: Elastollan 660D 10U grade) and LDPE (LG Chem: LUTENE-H ME 3500) were collected and crushed with a grinder. 50 kg each of the shredded polyurethane and LDPE, 2 kg of blowing agent and 25 kg of heavy coal were mixed in a mixer and fed to the extruder. After extruding into a flat plate form, the mixture was cooled and then ground to a size of 5 mm using a secondary mill.

100 kg of LDPE and a polyurethane mixed resin chip were mixed with 30 kg of a polyurethane binder, and cured to a thickness of 15 mm for 15 hours. Physical properties of the hardened block is shown in Table 1 below.

Comparative Example 1

Used waste tires were collected and shredded to a size of 5 mm with a grinder. 100 kg of the crushed waste tire chips were mixed with 30 kg of polyurethane binder, and cured to 15 mm thickness for 15 hours. Physical properties of the cured block are shown in Table 1 below.

Comparative Example 2

Used waste polyurethane was collected and crushed to 5 mm in size by a grinder. 100 kg of crushed waste polyurethane, 2 kg of blowing agent and 25 kg of heavy coal were mixed in a mixer and put into an extruder. After extruding into a flat plate form, the mixture was cooled and then ground to a size of 5 mm using a secondary mill.

100 kg of the produced polyurethane chip was mixed with 30 kg of polyurethane binder, and cured to 15 mm thickness for 15 hours. Physical properties of the cured block are shown in Table 1 below.

Table 1

Remarks Shock Absorption (GB) Elastic resilience (SB modulus) Permeability Hardness (HS) Tensile (MPa) Elongation (%) Example 1 21 4 5.4 66 7.6 230 Example 2 20 4 5.8 65 7.4 220 Example 3 20 3 5.5 67 7.3 210 Example 4 19 3 5.7 68 7.3 200 Example 5 18 4 5.6 66 7.3 200 Comparative Example 1 17 3 5.6 65 7.4 210 Comparative Example 2 19 4 5.7 63 7.5 230

1. Shock Absorbent

Blocks prepared in Examples 1 and 3, 15 mm thick asphalt pavement, 15 mm thick soil, and 15 mm thick concrete pavement. The height of the bound was measured.

The results are shown in Table 2 as GB coefficients (shock absorbency).

2. elastic resilience

The height of the bound was measured by naturally falling the steel balls 1 cm in diameter to the blocks manufactured in Examples 1 and 3 at a height of 100 cm.

The results are shown in Table 2 as SB coefficients (elastic resilience).

3. Permeability

Blocks prepared in Examples 1 and 3 were measured by the same method as the soil permeability test method.

The results are shown in Table 2 as permeability.

TABLE 2

Remarks Shock Absorption (GB) Elastic resilience (SB modulus) Permeability Example 1 21 4 5.4 Example 3 20 4 5.5 Soil cotton 8 6 12.2 Asphalt pavement 57 3 0.2 Cement paving 64 4 0.3

* Penetration resistance unit: Kg, Permeability coefficient is 10-3 size

According to the present invention, polyethylene, polypropylene, polystyrene, styrene-acrylonitrile-butadiene terpolymer (hereinafter ABS resin), acrylic resin, silicone polymer, fluororesin, polyvinylchloride, polyvinylacetate, polycarbonate, polyurethane and A novel elastic packaging material comprising a plastic resin chip and a polyurethane binder comprising a mixture thereof has been provided. Also provided is a method of producing a novel elastic packaging material. In addition, the present invention has the effect of providing a construction method excellent in appearance and functionality by using a novel elastic packaging material as a packaging material.

Claims (6)

Polyethylene, polypropylene, polystyrene, styrene-acrylonitrile-butadiene terpolymer (hereinafter referred to as ABS resin), acrylic resin, silicone polymer, fluorocarbon resin, polyvinylchloride, polyvinylacetate, polycarbonate, polyurethane, and mixtures thereof A plastic resin chip prepared by adding 0.1 to 10 parts by weight of a blowing agent to 100 parts by weight of the composition to a composition consisting of 30 to 90% by weight of a plastic resin selected from the group and 10 to 70% by weight of calcium carbonate; And Elastic packaging material comprising 10 to 40 parts by weight of polyurethane binder based on 100 parts by weight of the plastic resin chip. delete delete delete delete The elastic packaging material of claim 1, wherein the plastic resin chip further comprises a pigment.