KR101782158B1 - Composition for pallet - Google Patents

Abstract

The present invention relates to a composition for a pallet using a synthetic resin and a bio raw material, and more particularly to a composition for a pallet comprising a synthetic resin and a bio raw material, wherein the bio raw material is at least one of rice hull, rice straw, The ratio is 10 to 400 parts by weight of the bio raw material per 100 parts by weight of the synthetic resin.
According to the present invention, there is an advantage that it is possible to provide a pallet which is excellent in strength and elasticity and can reduce the cost of logistics because the load is not heavy. It also has the advantage of lowering the cost of manufacturing the pallet, enabling recycling, and facilitating biodegradation at the time of disposal.

Description

Technical Field [0001] The present invention relates to a composition for a pallet using a synthetic resin and a bio-

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a composition for a pallet using a synthetic resin and a bio raw material, and more particularly to a composition for a pallet using a synthetic resin and a composition as a bio raw material, And a composition for a pallet using the raw material.

In general, various types of pallets are used as a means for packaging or transporting various articles

The pallet is classified according to the material.

Conventional types of pallets include wooden pallets, metal pallets, and plastic pallets.

Among them, the wooden pallet has an advantage that it is environment-friendly, but it is vulnerable to pests and bacteria, so that it is difficult to use the wooden pallet because the regulations on the international trade transaction are strengthened due to the quarantine problem.

The metal pallet is stronger and lighter than the wooden pallet and has a higher durability. On the other hand, each component must be fixed by welding or a large number of bolts, so that the manufacturing process is not easy, the defect rate is high, It is easily corroded.

In addition, although the plastic pallet has an advantage in that it has excellent strength and is easy to manufacture, the plastic pallet has a drawback in that it acts as an obstacle to loading a large amount of articles in a container or the like due to the heavy weight of the pallet itself and has a high price. In addition, there was a disadvantage in that it could not be bonded to a pallet for air cargo using a light pallet.

In order to solve these problems, recently, a paper palette that can replace wood, metal, and plastic pallets has been developed. However, the paper pallet has a drawback in that it is difficult to load heavy objects due to its poor durability, is vulnerable to environmental changes such as temperature and humidity, and becomes bulky.

KR 10-1025047 B1 KR 20-0367553 Y1

Accordingly, an object of the present invention is to provide a pallet using a synthetic resin and a bio raw material to provide excellent strength and elasticity, and to reduce the cost of logistics because the load is not heavy.

In addition, it is possible to reduce the manufacturing cost of the pallet and reduce the price burden on the synthetic resin pallet by making it recyclable.

By using biomaterials, biodegradation at the time of disposal is facilitated, thereby reducing environmental pollution caused by the use of synthetic resin.

In order to accomplish the above object, the present invention provides a composition for a pallet comprising a synthetic resin and a bio raw material, the synthetic resin comprising a synthetic resin and a bio raw material, wherein the bio raw material is at least one of rice hull, rice straw, And the ratio of the raw material is 10 to 400 parts by weight of the bio raw material with respect to 100 parts by weight of the synthetic resin.

The bio-material is dried and pulverized, and the synthetic resin is polypropylene.

The above-mentioned antibacterial extract is prepared by adding an aqueous ethanol solution of 30 to 60% to cinnamon, pine and alfalfa and aging for 30 to 50 days. And the synthetic resin is polypropylene.

The pallet composition further comprises 10 to 20 parts by weight of sugarcane by-products, wherein the sugarcane by-products are obtained by impregnating sugar cane by-products with pine essential oil, followed by drying and pulverizing.

Wherein the additive is at least one selected from the group consisting of talc, wax, zinc, stearic acid and maleic anhydride.

According to the present invention, there is an advantage that it is possible to provide a pallet which is excellent in strength and elasticity and can reduce the cost of logistics because the load is not heavy.

It also has the advantage of lowering the cost of manufacturing the pallet, enabling recycling, and facilitating biodegradation at the time of disposal.

Hereinafter, the present invention will be described in detail.

The pallet composition according to the present invention is not limited to the pallet used for loading or moving the article, but also the pallet used for packaging the article. It is also possible to prepare it as disposable as well as multi-disposable.

The composition for a pallet of the present invention uses a synthetic resin and a bio raw material and solves a manufacturing cost increase which is a disadvantage of a conventional synthetic resin pallet, that is, a plastic pallet, an increase in the cost of logistics due to environmental problems, strength, and load.

That is, when the pallet is formed using only the synthetic resin, the weight of the pallet is increased, resulting in an increase in the cost of the logistics. Also, the manufacturing cost is high and the strength and the elasticity are not good. If the mixture is formed by mixing at least one of the raw materials, it is possible to reduce the weight to volume, to significantly reduce the cost of production, to reduce the manufacturing cost, to significantly increase the strength and elasticity, and to recycle and biodegrade, The burden on the company will also decrease.

The composition for a pallet according to the present invention comprises at least one of a synthetic resin and a bio raw material, wherein the bio raw material is at least one of rice husk, rice straw and rice bran, and the ratio of the synthetic resin to the bio raw material is 100 parts by weight And 10 to 400 parts by weight of the bio raw material.

The synthetic resin may be a polypropylene (PP), a polystyrene (PS), a polyvinyl acetate (PVAc), a polyacrylate, a polyethylene terephthalate (PET), a polyvinyl chloride One or more of methacrylate (PMMA), ethylene-vinyl acetate copolymer (EVA), polycarbonate (PC) and polyamide may be used. However, considering rigidity, elasticity, Is most preferably used, but not necessarily limited thereto.

As the synthetic resin, a new material may be used, but a recycled material may be used. The use of the recycled material is not limited so that the production cost of the recycled polypropylene can be further reduced. In addition, it is natural that mixed use of new materials and recycled materials is possible.

In addition, at least one of rice husk, rice straw, and rice bran is used as the bio raw material. Such rice husk, rice straw, and rice bran are environmentally friendly waste resources, but have a low specific gravity. In addition, the manufacturing cost is significantly lower than that of the synthetic resin, so that the manufacturing cost can be reduced. In addition, the strength is improved and the elasticity is imparted upon mixing with the synthetic resin. In addition, the pallet can be lightened.

These bio raw materials are dried and pulverized and used in powder form of 200 to 400 mesh. When the particles are too large, dispersion can not be easily performed.

Since the rice husk, rice straw and rice briquette forming the bio raw material have already been dried to some extent, they can be finely pulverized and applied in powder form.

In addition, the ratio of the synthetic resin to the bio-raw material is 10-400 parts by weight, more preferably 10-200 parts by weight, of the bio-raw material relative to 100 parts by weight of the synthetic resin. If the amount of the bio- The advantage of mixing the raw materials can not be sufficiently exhibited, and if the amount is excessive, the bio-raw material is not uniformly dispersed in the synthetic resin and basic physical properties are not good.

In the present invention, the biomaterial and the synthetic resin are mixed by thoroughly mixing the synthetic resin and the biomaterial, heating the mixture at 100 to 150 ° C., melting the mixture at 150 to 200 ° C., and then pelletizing. The pelletizing method is well known in the field to which this technique belongs, and is not limited thereto. Further, if necessary, it may be extruded or injection molded into a pallet as it is without being pelletized.

On the other hand, the bio-raw material may be dried and pulverized as it is, or may be used after antibacterial treatment to improve the antimicrobial properties of the composition.

Such an antibacterial treatment means impregnating the above-mentioned bio raw material with an antibacterial extract. At this time, the bio-raw material may be subjected to antibacterial treatment after drying and pulverization, dried and pulverized again, or may be subjected to antibacterial treatment without drying and pulverization, followed by drying and pulverization.

Herein, the antimicrobial composition refers to an extract of cinnamon, pine and alfalfa, and the antimicrobial composition is prepared as follows.

First, each of cinnamon, pine and alfalfa is prepared in equal amounts, cut to a size of 1 to 5 cm, and then spray-washed at a high pressure. Then, it is immersed in a 30 to 60% aqueous solution of ethanol. Here, the amount of the aqueous ethanol solution is not limited, but about 10 to 20 times by weight of the total amount of the cinnamon, pine, and gnasser is sufficient. At this time, the cinnamon, pine and alfalfa mean dry cinnamon, dry pine needles, and dried alfalfa. The concentration of the ethanol is determined in consideration of the maximum extraction efficiency, and the immersion period, that is, the ripening period is preferably 30 to 50 days. The aging temperature is about 5 ~ 40 ℃. Next, this is centrifuged or filtered to obtain only a fermentation liquid. This fermentation liquid, that is, the antimicrobial composition has excellent antimicrobial activity.

In the antimicrobial treatment, the antimicrobial composition prepared above is mixed with the raw or uncrushed raw material of the pulverized form at a weight ratio of 1: 0.5 to 1.5. When the antimicrobial composition and the biomaterial are stirred, the biomaterial can be impregnated with the antimicrobial composition to produce a biomaterial having excellent antimicrobial activity. The biomaterial is dried at 20 to 50 ° C for about 30 minutes to 10 hours and pulverized to 200 to 400 mesh.

When such antimicrobial-treated bio raw materials are used, it is easy to apply to the pallets used for product packaging, and antibacterial treatment does not cause fungi or germs to propagate, thereby facilitating long-term storage.

Meanwhile, 10 to 20 parts by weight of sugarcane by-products may be further added to improve the physical properties and antibacterial properties of the molded product. That is, the by-product of sugarcane is mixed with a synthetic resin together with the bio raw material.

At this time, as the by-product of sugar cane, pine essential oil is impregnated, followed by drying and pulverizing.

Here, the by-product of sugarcane means the residue left after squeezing the sugarcane stalks, which not only lowers the manufacturing cost but also reduces the load on the pallet.

More specifically, water is added to the by-product of sugarcane at a rate of 2 to 5 times, and the mixture is heated at 80 to 100 ° C for 1 to 2 hours. Then, the heated sugar cane by-products are removed and dehydrated to a water content of 5 to 15% by weight. Prepare essential oil of pine tree with excellent antimicrobial activity. The essential oil of the pine can be obtained by distilling the pine tree, and commercially available products can be purchased and used. At this time, the pine essential oil is diluted. The dilution is performed by adding distilled water to the pine essential oil at a weight ratio of 1:10 to 100 to dilute the dehydrated sugar cane by-product at a weight ratio of 1: 2 to 5 And aged at 50 to 80 ° C for 50 to 100 hours. Here, the sugarcane by-products are ground to have a diameter of 0.1 to 0.2 mm. When the aging is completed as described above, the solvent in the diluting solution is evaporated and the surface of the sugar cane by-products becomes dry to some extent, so that the sugar cane by-product is in a state in which the pine essential oil is adsorbed and has excellent antibacterial activity. Finally, the sugarcane by-product is pulverized to 200 to 400 mesh. Further, it may be further dried and used if necessary.

That is, application of the sugarcane by-product as described above has the advantage that the load is lighter, the overall strength is improved, and the antibacterial property is also improved.

Meanwhile, it may further include at least one of talc, lubricant, dispersant, and maleic anhydride as an additive together with the synthetic resin, the bio raw material and the like. Such an additive is usually used as an additive in the molding of a synthetic resin, and the talc can improve the strength of the product. The talc may be contained in an amount of 1 to 10 parts by weight based on 100 parts by weight of the synthetic resin.

The lubricant may be wax, stearic acid or both. The lubricant is added to prevent the composition from adhering to the extrusion line due to its high temperature in the extrusion line. The lubricant may be included in an amount of 1 to 10 parts by weight based on 100 parts by weight of the synthetic resin.

As the dispersing agent, zinc can be used, and the dispersing agent is for improving dispersibility. The dispersant may be included in an amount of 1 to 10 parts by weight based on 100 parts by weight of the synthetic resin.

The maleic anhydride assists the mutual bonding between the bio-raw material and the synthetic resin, and may be included in an amount of 1 to 5 parts by weight based on 100 parts by weight of the synthetic resin.

That is, the composition for a pallet according to the present invention includes synthetic resin and a bio raw material, and may further include both the sugar cane by-products described above, the additives described above, or the sugar cane by-products and additives, It provides excellent physical properties to the pallet.

Hereinafter, a method for producing a pallet using the above composition for a pallet is as follows. A pallet is manufactured by a conventional molding method using the above composition.

First, the above-mentioned composition for a pallet is prepared.

The composition for the pallet is prepared by drying at least one of rice husk, rice straw, and rice bran, which are bio raw materials, and pulverizing the same at 200 to 400 mesh. Such a bio raw material may be in an antimicrobial treatment state as described above, if necessary.

Next, the bio-material and the synthetic resin are mixed. Further, if necessary, the sugarcane by-products, additives, or both of the above-described additives are further mixed.

Then, the bio raw material including the bio raw material and the synthetic resin is heated at 100 to 150 ° C, sufficiently kneaded, and then melted at 150 to 250 ° C. When the melting is completed, the mixture is extruded or extruded at a temperature of 150 to 300 DEG C into a pallet shape, and the molded article is cooled. And drying the cooled cooling product to complete the production of the pallet.

In the method for producing the pallet, the concrete conditions of the melting, extruding, injection molding, cooling, and drying methods of the synthetic resin composition are not limited, and they are well known in the art to which the present invention pertains. It is enough.

When a pallet is manufactured using the composition for a pallet as in the present invention, there is no burden on the environment due to the use of a bio raw material, and strength, elasticity and the like are improved, self-load is reduced, It can also be used for cargo. In addition, the antimicrobial properties are also improved, which makes it easy to package, store and store products.

Hereinafter, the present invention will be described in more detail with reference to specific examples.

(Example 1)

10 parts by weight of rice hull, 3 parts by weight of stearic acid and 3 parts by weight of maleic anhydride were mixed with 100 parts by weight of polypropylene. At this time, the rice hulls were dried at 50 ° C. for 4 hours and then pulverized to 300 mesh. The mixture was melted at 100 to 150 ° C, sufficiently mixed, and pelletized.

(Example 2)

The composition was prepared in the same manner as in Example 1 except that the compounding ratio was as shown in Table 1 below.

division Polypropylene chaff Rice straw Rice bran Sugarcane by-product Stearic acid Maleic anhydride Example 2 100 100 - - - 3 One Example 3 100 200 - - - 3 One Example 4 100 - 10 - - 3 One Example 5 100 - 100 - - 3 One Example 6 100 - 200 - - 3 One Example 7 100 - - 10 - 3 One Example 8 100 - - 100 - 3 One Example 9 100 - - 200 - 3 One Example 10 100 100 - - - 3 One Example 11 100 - 100 - - 3 One Example 12 100 - - 100 - 3 One Example 13 100 100 - - 20 3 One Example 14 100 - 100 - 20 3 One Example 15 100 - - 100 20 3 One

Here, the rice husk, rice straw, and rice husk of Examples 2 to 9 were processed in the same manner as in Example 1, and the rice husks, rice straw and rice bran used in Examples 10 to 15 were subjected to an antibacterial treatment.

That is, the rice husks, rice straw, and rice bran in the above Examples 10 to 15 were prepared and used as follows. Dried cinnamon, dried pine needles, and dried shoots were mixed in the same amount, cut into a size of 1 to 5 cm, sprayed at high pressure, immersed in a 50% ethanol aqueous solution at a weight ratio of 1:10, and aged for 30 days. At this time, the ripening temperature was 25 占 폚. Then, it was filtered to obtain only aged solution. Then, the powdery rice husk, rice straw or rice bran was added to the aged liquid at a weight ratio of 1: 1, mixed for 1 hour, left at 25 占 폚 for about 1 hour, and pulverized at 300 mesh.

The sugar cane by-product is purchased from a pine tree essential oil, diluted with distilled water to a weight ratio of 1:50 (essential oil: distilled water), and the sugarcane byproduct is added to the diluted solution at a weight ratio of 1: 2 (diluent: sugar cane byproduct) And aged at 70 ° C for 80 hours. At this time, the sugarcane by-product was pulverized to have a diameter of 0.2 mm, and the final aged sugarcane by-product was pulverized to 400 mesh. The sugarcane by-products were pretreated. Three weight times of water was added to the by-product of sugarcane, and the mixture was heated at 90 ° C for 1 hour, then taken out and dewatered to have a water content of 10%.

(Comparative Example 1)

The same procedure as in Example 1 was carried out, but rice hull was not used.

(Test Example 1)

The measurement results of tensile strength and brittleness of these examples and comparative examples are shown in Table 2 below. The tensile strength was measured by ASTM D 638 and the tensile modulus by D 638.

Results of Test Example 1 division Tensile Strength (MPa) Tensile modulus (MPa) Example 1 3.8 1515 Example 2 4.4 2015 Example 3 5.1 3015 Example 4 3.9 1418 Example 5 4.4 2105 Example 6 5.2 2937 Example 7 3.9 1482 Example 8 4.4 2009 Example 9 5.2 2983 Example 10 3.7 2013 Example 11 4.3 2118 Example 12 5.1 2074 Example 13 4.7 2098 Example 14 4.8 2103 Example 15 4.9 2980 Comparative Example 1 3.0 1177

As can be seen from the above Table 2, all of Examples 1 to 15 according to the present invention were found to have excellent tensile strength and tensile elastic modulus as compared with Comparative Example 1. In addition, it was confirmed that the tensile strength and tensile elastic modulus were increased as the content of the bio raw material was higher.

In addition, the antimicrobial treatment of the sugar cane byproducts and the biomaterials did not show a significant difference in tensile strength and tensile elasticity, but it was confirmed that the tensile strength slightly increased when the by-product of sugarcane was added.

(Test Example 2)

The antibacterial properties of Examples 10 and 13 were tested. Escherichia coli ATCC 25922 and Staphylococcus aureus ATCC 6538 were used as the test strains. Escherichia coli ATCC 25922 and Staphylococcus aureus ATCC 6538 were used as the test strains. The results are shown in Table 3 below.

Results of Test Example 3 division Initial concentration Concentration after 24 hours Decrease (%) Example 10
Escherichia coli 3.3 × 10 ⁵ 4.2 × 10 ⁴ 87.3 Staphylococcus 5.1 × 10 ⁵ 4.5 x 10 ⁴ 91.2 Example 13
Escherichia coli 3.3 × 10 ⁵ 2.1 x 10 ⁴ 93.6 Staphylococcus 5.1 × 10 ⁵ 2.3 x 10 ⁴ 95.5

As can be seen in Test Example 3, it was confirmed that Examples 10 and 13 had excellent antibacterial activity.

In addition, it was confirmed that the antibacterial activity of Example 13 was better than that of Example 10.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. It will also be appreciated that many modifications and variations will be apparent to those skilled in the art without departing from the scope of the invention.

Claims (5)

Wherein at least one of rice husk, rice straw, and rice bran is dried and pulverized with respect to 100 parts by weight of the synthetic resin so that 10 to 400 parts by weight of the bio raw material is mixed,
The bio-raw material is prepared by immersing the extract of cinnamon, pine and alfalfa in an ethanol aqueous solution of 30 to 60%, stirring and mixing with an antimicrobial extract aged for 30 to 50 days,
10 to 20 parts by weight of sugarcane by-products impregnated with pine essential oil, dried and pulverized,
1 to 10 parts by weight of at least one lubricant of wax and stearic acid, 1 to 10 parts by weight of zinc as a dispersant,
And 1 to 5 parts by weight of maleic anhydride. delete delete delete delete