KR20120082264A - Vinyl bag using biological material and case thereof - Google Patents

Abstract

PURPOSE: A plastic bag using a bio-material, and a case thereof are provided to reduce the air-pollution caused by incinerating plastic bags after unit by reducing the discharging amount of toxic gas. CONSTITUTION: A plastic bag using a bio-material is obtained by a mixture containing 10-50wt% of synthetic resin, 0.5-5wt% of compatibilizer, 0.5-3wt% of plastic lubricant, 0.1-1wt% of oxidant for a plastic decomposition, and the balance of powdered herbaceous agricultural waste. The synthetic resin is selected from a polyolefin based polymer, a polyester based polymer, a polyamide based polymer, or a polyacrylate based polymer. The powdered herbaceous agricultural waste is porous grain husks, grain stalks, or their mixture. The plastic bag includes a bio-plastic sheet(20) forming a storage space by folding, an attaching unit formed on one end side of the bio-plastic sheet to be attached to the other end using ultrasonic waves, coupling protrusions protruded from both ends of the bio-plastic sheet, a withdrawal hole(24) for discharging the end of the plastic bag, and a cutting unit(26) cutting the plastic bag.

Description

Plastic bag using bio material and its case {VINYL BAG USING BIOLOGICAL MATERIAL AND CASE THEREOF}

The present invention relates to a plastic bag using a biomaterial and a case thereof, and more particularly, a biomaterial having a physical property and a degrading effect of a plastic bag while utilizing waste resources by using a porous herbal agricultural waste product which is a biodegradable natural material. It relates to a plastic bag and its case.

In general, plastic bags are made of synthetic resins such as polyvinyl chloride, polyethylene, and the like, and are formed in a circular shape through inflation extrusion, and after being cut into one, heat-sealed to form an envelope.

The plastic bag has an inlet at the upper end, and after storing the object in the space therein, it is used to store or transport the object by tying around the inlet.

In addition, large-scale discount marts and department stores where plastic bags are used a lot, roll bags wrapped with plastic bags are used. This is a fusion part for sealing and a cutting part that is easy to cut at a predetermined distance in the longitudinal direction. It formed a plurality of regular intervals, and wound it in the form of a film, cut and used to cut the cut unnecessary compared to the general plastic bag, so it is very economical, and easy to store.

Since the length of the plastic bag is determined by a cutting unit that is easily cut at a certain distance, the size of the plastic bag is too large when the amount of the object is small because the object should be contained in the plastic bag that is cut to a certain size regardless of the amount of the object. It becomes large, and when a large amount of goods, it is necessary to use several plastic bags, so there is a problem in that resources are wasted.

In addition, the plastic bag is disposed of as garbage after use, so it is incinerated or disposed of in land, and the plastic bag emits toxic gas when incinerated and pollutes the air, and does not decompose when landfilled and remains for a long time. There was this.

A separate case for accommodating the conventional plastic bag as described above is provided. This case is manufactured so that the plastic bag's receiving space is formed by folding and inserting a molded sheet of plastic sheet, which is not only very inconvenient, but also almost manually made to fold and insert to fabricate the case. There was a problem that takes a lot of time.

Therefore, the present invention has been made to solve the above problems, by producing a plastic bag with a bio-material having an oxidative biodegradation effect, to reduce the air pollution by reducing the emission of toxic gas when incinerated after use of the plastic bag The aim is to provide plastic bags using biomaterials that are decomposed upon landfilling.

In addition, an object of the present invention is to provide a vinyl bag case using a bio material that accommodates a vinyl bag in a roll form made of a bio material and cuts it to a length to be used when the vinyl bag is taken out.

In addition, in order to convert the work method of folding and inserting the plastic sheet in order to manufacture the case, and to switch to the work method of ultrasonic welding and fixing, by mixing the polypropylene for ultrasonic welding to the synthetic resin mixed with the biomaterial for molding the case, It is an object of the present invention to provide a case for a plastic bag using a bio material that can be conveniently manufactured by a folding operation and an ultrasonic welding process.

The present invention for achieving the above object, one or two selected from the group consisting of polyolefin-based polymers, polyester-based polymers, polyamide-based polymers and polyacrylate-based polymers with respect to 100% by weight of the composition 10 to 50% by weight of the synthetic resin, 0.5 to 5% by weight of a compatibilizer for providing compatibility between the synthetic resin and powdery herbal agricultural waste, 0.5 to 3% by weight of plastic lubricant, 0.1 to 1% by weight of oxidizing agent for plastic decomposition and residual amount It is characterized in that it comprises a; as a blend containing powdered herbal based agricultural waste.

In addition, according to the present invention, the herbaceous agricultural waste is characterized in that the porous grain shell, grain bar or a mixture thereof.

In addition, according to the present invention, the blend containing the herbal agricultural waste is characterized in that it comprises 5 to 20% by weight of inorganic filler and 0.5 to 2% by weight of agricultural waste surface coating agent based on 100% by weight of the herbal agricultural waste. It is done.

In addition, the present invention is a bio-plastic sheet for forming both sides by folding the fold line formed in the center and the receiving space therein; An adhesive part formed to be folded at an end of one side of the both sides, and bonded to an end of the other side by ultrasonic; Coupling protrusions protruding from one end of each of the two sides, and formed to be folded by a fold line extending from one end of the edge; Is formed on any one of the two sides, the outlet for withdrawing the end of the plastic bag; And it is characterized in that it comprises a cutting unit for cutting to a predetermined length the plastic bag to be drawn out through the outlet.

In addition, according to the present invention, the bioplastic sheet is one or two selected from the group consisting of polyolefin-based polymers, polyester-based polymers, polyamide-based polymers, and polyacrylate-based polymers based on 100% by weight of the total composition. 10 to 50% by weight of the synthetic resin, 20 to 25% by weight of polypropylene, 0.5 to 5% by weight of a compatibilizer for providing compatibility between the synthetic resin and powdery herbal based agricultural waste, 0.5 to 3% by weight of a lubricant for plastics, and plastic decomposition It is characterized in that it comprises a; formulated with 0.1 to 1% by weight of oxidizing agent and the residual amount of powdered herbal based agricultural waste.

In addition, according to the present invention, the blend containing the herbal agricultural waste is characterized in that it comprises 5 to 20% by weight of inorganic filler and 0.5 to 2% by weight of agricultural waste surface coating agent based on 100% by weight of the herbal agricultural waste. It is done.

According to the present invention, by using porous herbaceous agricultural waste, which is one of the waste resources being used as an alternative raw material of the plastic bag, it is possible to utilize the waste resources and reduce the manufacturing cost, the physical properties and The decomposition efficiency is also excellent, which has the advantage of high utilization.

In addition, since the case for storing the plastic bag is made of a mixture of synthetic resin containing biomaterial and polypropylene for ultrasonic fusion, ultrasonic fusion of the case joint at the time of manufacturing the case is improved, so that the assembly can be easily performed. Bio-material is applied to reduce air pollution due to incineration when the case is disposed of, and has the advantage of being decomposed by landfill.

1 is a perspective view showing a process of combining the case for the plastic bag according to an embodiment of the present invention.
Figure 2 is a perspective view showing the main portion showing the process of forming the support by folding the engaging protrusion in the case of Figure 1;
Figure 3 is a perspective view showing a process of cutting after withdrawing the plastic bag in the case of Figure 1;

Specific embodiments of the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

Vinyl bag using the biomaterial according to an embodiment of the present invention is a polyolefin-based polymer, polyester-based polymer, polyamide-based polymer and polyacrylate-based polymer selected from the group consisting of one or two or more synthetic resins 10 ~ 50 0.5% to 5% by weight of a compatibilizer for providing compatibility between the synthetic resin and the powdered herbal based agricultural waste, 0.5 to 3% by weight of a plastic lubricant, 0.1 to 1% by weight of an oxidizing agent for plastic decomposition, and a residual amount of powdered herbal based agricultural products. It is a composition made of biomaterials containing a blend containing waste.

Examples of the synthetic resins include polyolefins such as LDPE, HDPE, MDPE, LLDPE, VLDPE, PP, PVC, EVA, PVAc and copolymers thereof, polyesters such as PET and PBT, NYLON-6, NYLON-66 and NYLON Polyacrylates, such as polyamide (PA), PMMA, and an acrylic copolymer, such as -11, are mentioned.

The amount of synthetic resin in the bioplastic composition is preferably used in an amount of 10 to 50% by weight relative to the total 100% by weight of the composition. When used in an amount of less than 10% by weight, it is difficult to use as a product due to the sharp drop in dispersion and compatibility, and when used in an amount of more than 50% by weight, the resin content is excessive, so economic efficiency is low. In order to maintain sufficient strength of the product state, it is more preferably used in an amount of 18 to 30% by weight based on 100% by weight of the total composition.

The compatibilizer is a substance that imparts compatibility by removing the releasability between the non-polar synthetic resin and the polar herbal agricultural waste, and examples thereof include glycidyl methacrylate, ethylene vinyl alcohol (EVA), and polyvinyl. Alcohol (PVA), and ethylene vinyl acetate and the like can be used without limitation as long as it is commonly used in the art. However, more preferably, a polyolefin-based polymer of Formula 1 or a polyolefin-derived polymer of Formula 2 may be used. As a commercially available product, ADPOLY PH-200, EM-200, SMS-554 (Honam Petrochemical Co., Ltd.) etc. are mentioned, for example. The compatibilizer is preferably used in an amount of 0.5 to 5% by weight based on 100% by weight of the total bioplastic composition of the present invention. When used in an amount of less than 0.5% by weight is insufficient compatibility may cause separation between layers, and when used in an amount of more than 5% by weight it is not possible to obtain an economic effect. More preferably, the amount is used in an amount of 0.5 to 3.0% by weight based on the total weight of the composition.

Wherein R is H or CH ₃

Wherein R is H or CH ₃

The lubricant for plastics is added as a component added to perform a smooth extrusion operation while preventing thermal decomposition by reducing frictional heat generated during bonding or strengthening affinity and blending and blending between the blend containing herbal agricultural waste and synthetic resin, When added, the mechanical properties provide smooth workability while maintaining similarity to the base material. The lubricant may be one or a mixture of two or more selected from the group consisting of stearic acid salts, palmitate salts and laurate salts, which are environmentally friendly natural products. More preferably, calcium stearate, zinc stearate or mixtures thereof may be used. The lubricant is preferably used in an amount of 0.5 to 3% by weight based on 100% by weight of the total bioplastic composition of the present invention. When used in an amount less than 0.5% by weight, the effect as a sufficient lubricant may not be obtained when forming the product, and when used in an amount of more than 3% by weight, defects in the product may occur or carbides or flow-marks may be formed when forming the product. ), Which hinders the beautiful aesthetics and of course no economic effect.

The plastic decomposition oxidant is a component added to break the polymer chain, and may be used without limitation as long as it is a plastic decomposition oxidant conventionally used in the art, and may be used in an amount of 0.1 to 100% by weight of the bioplastic composition of the present invention. Preference is given to using in an amount of ˜1% by weight. For example, Korean Patent No. 10-0641272 to the present applicant includes metal components such as iron (Fe), zinc (Zn), manganese (Mn) and titanium (Ti), which promote oxidation of a polymer as an oxidation promoter. In addition, the additive may be added to the composition as a metal itself, or may be added in the form of an organic complex combined with an organic compound. When such an oxidizing agent for decomposition is used in an amount of less than 0.1% by weight relative to 100% by weight of the composition, the degradation effect is insignificant, and when used in an amount of more than 1% by weight, economical efficiency is low.

Formulation containing the herbal agricultural wastes include bran (or husk) of grains including corn, oats, rice, wheat, barley, rice straw, corn, barley, wheat, rapeseed, sunflower It means a blend containing porous by-products or mixtures thereof except grains or seeds obtained from herbal farm products such as large grains of cereals.

The blend containing the herbal agricultural wastes occupies the remaining amount excluding the resin, the compatibilizer, the lubricant and the inorganic filler in the bioplastic composition of the present invention. More preferably, the blend containing herbal based agricultural wastes relative to the total weight of the composition is used in an amount of 50 to 65% by weight. The blend containing the herbal agricultural waste is composed of 5 to 20% by weight of the inorganic filler and 0.5 to 2% by weight of the surface coating agent with respect to 100% by weight of the herbal agricultural waste, the inorganic filler to the herbal agricultural waste More preferably, it is an impregnated powdery coating.

The inorganic filler is a material deposited in the pores of the powdery herbal agricultural waste, and consists of calcium carbonate, glass fiber, talc, mica, silica, clay powder, wollastonite, talc, kaolin powder, silica, mica, kaolin and titanium dioxide. One or a mixture of two or more selected from the group may be used. In order to improve the physical properties of the plastic, the inorganic filler is used in which the nano-size powder in an amount of 1 to 50% of the total 100%. More preferably, those containing 80 to 100 nm in powder in an amount of 10 to 30% are used.

In addition, the inorganic filler is preferably used in an amount of 5 to 20% by weight based on 100% by weight of the herbal agricultural waste. When used in an amount of less than 5% by weight, the amount of impregnation in porous herbal agricultural waste is small, so that the surface is not sufficiently modified and air and moisture remain in the interior of the process, resulting in water and gas. When used in an amount of more than 20% by weight is deposited in the herbal agricultural wastes and the remaining amount is excessive may be a cause of lowering the mechanical properties of the final compound.

The surface coating agent is a material capable of coating the surface of the herbal agricultural waste to prevent water evaporation, one or two or more mixtures selected from the group consisting of stearates, palmitates and laurates may be used. Can be. More preferably, calcium stearate, zinc stearate or mixtures thereof may be used. The surface coating agent is preferably used in an amount of 0.5 to 2% by weight based on 100% by weight of the herbal agricultural waste. If the amount is less than 0.5% by weight, the coating may not be sufficient to prevent the reabsorption of moisture on the surface of the powder. If the amount is more than 2% by weight, the slip between the polymer compound and the natural product in the final melt extrusion step is used. Decreases mechanical properties.

 In addition, a variety of well-known components that can be used as additives for plastic production can be added in a predetermined amount to improve processability, product stability, product performance, and the like. For example, a surface treating agent may be added in a predetermined amount to enhance bonding strength and reduce repulsion, and a stabilizer may be added to maintain the physical and chemical properties of the resin during the life of the plastic product so as not to decompose. It can be added in an amount of. In the present invention, linear organic thermal stabilizers and antioxidants (irganox 1010 or 1076 series) having a molecular weight of less than 2,000 are added in predetermined amounts in order to prevent deformation and carbonization of the compound to maintain mechanical properties and processing stability. It is also desirable to.

On the other hand, Figure 1 is a perspective view showing a process of combining the case for the plastic bag according to an embodiment of the present invention, Figure 2 is a perspective view of the main portion showing the process of forming the support by folding the coupling protrusion in the case of Figure 1, Figure 3 1 is a perspective view illustrating a process of cutting a plastic bag after withdrawing it from the case of FIG. 1.

As shown, the plastic bag case 10 using the biomaterial according to an embodiment of the present invention is composed of a single sheet of bioplastic sheet 20, both sides 21, 22 are both ends in the state facing the folded This is bonded to form a receiving space on the inside, and the engaging projections 27 which are formed to protrude from the lower end portions of both side surfaces 21 and 22, respectively, are combined to form a supporting portion.

The roll-shaped vinyl bag 30 is accommodated in the space formed in the case 10, and is prevented from being separated from the receiving space by the support part.

Here, both sides 21 and 22 of the case 10 are configured to be folded in a state facing each other by a fold line 23 formed in the center, of one side 21 of the two sides 21, 22 At the end, an adhesive portion 21a is formed which is folded by another fold line 21b and fixed to the end of the other side 22 by ultrasonic fusion.

Outlets 24 are formed at the upper sides of the other sides 22 and 22 of the case 10 to withdraw the plastic bag 30 accommodated in the space, and above the outlets 24. A fastener 25 for temporarily fixing the plastic bag 30 drawn out through the outlet 24 is formed.

In addition, the other side 22 of the case 10 is configured to include a cutting portion 26 for cutting the plastic bag 30 drawn out through the outlet 24 to a predetermined length.

The cutting part 26 is provided with a slanted blade 26a in a groove portion that is opened upwardly at the upper end of the other side 22 of the bioplastic sheet 20, and has a separate cover member 26b on the outer side of the blade 26a. Is adhesively fixed by ultrasonic waves.

Bioplastic sheet 20 is formed on the lower end of both sides (21, 22) of the engaging projections 27 are coupled to each other, this coupling portion 27 is folded in the sheet to form a space therein, the inside of the vinyl The inner space is maintained to accommodate the bag 30, and the coupling protrusions 30 are coupled to each other to be horizontally connected to both sides 21 and 22 to support the plastic bag 30 accommodated in the inner space. It is configured to perform a supporting role to prevent the escape from the lower side of the case (10).

In addition, the fitting groove 27a is formed at one side of the coupling protrusion 27, and the coupling groove 27a is configured to be coupled to each other when the coupling protrusion 27 is folded.

Here, the engaging projection 27 forms a fold line (27b) in the portion extending from the lower edge of both side surfaces (21, 22). And, the fold line (27b) is pressed in the outer surface is made in the form of recessed grooves to facilitate folding when the engaging projections 27 of the two side surfaces (21, 22) are engaged with each other.

In addition, the fold line (27b) is formed in two stages, when the engaging projections 27 are folded and engaged to weaken the force to open to the outside due to the nature of the plastic sheet to engage the engaging projections 27 to each other flat. This is to facilitate the plane maintenance when formed.

In addition, the fitting groove 27a of the coupling protrusion 27 is formed as an inclined surface formed inclined downward from the inlet to the inner side, thereby preventing arbitrary disassembly of the coupling protrusion 27 coupled in the state where the fitting groove 27a is engaged with each other. It is one configuration.

On the other hand, the case 10 is composed of a sheet of bioplastic sheet 20 formed by T-DIES extrusion molding of a bio material, the roll-shaped plastic bag inside the case 10 In order to form a space for accommodating the 30, the bioplastic sheet 20 is folded to form both side surfaces 21 and 22, and the ends of the both side surfaces 21 and 22 are bonded to each other. Ultrasonic fusion is used when adhering the ends of 21 and 22.

The material of one sheet of bioplastic sheet 20 for forming such a case 10 is a group consisting of a polyolefin polymer, a polyester polymer, a polyamide polymer, and a polyacrylate polymer, based on 100% by weight of the total composition. 10 to 50% by weight of one or two or more kinds of synthetic resins selected from 20 to 20% by weight of polypropylene, 0.5 to 5% by weight of a compatibilizer for providing compatibility between the synthetic resin and powdery herbal based agricultural waste, and lubricant 0.5 for plastics. ˜3% by weight, 0.1-1% by weight of oxidizing agent for plastic decomposition and residual amount, including a blend containing powdered herbal based agricultural waste.

That is, the composition of the bioplastic sheet material for molding the case is 20 to 30% by weight of polypropylene is added in the composition for molding the plastic bag, whereas the compound containing powdery herbal based agricultural waste is added polypropylene It is preferable to reduce the amount by.

Here, the adhesive part of one side of the case 10 and the end of the other side are adhesively fixed by ultrasonic fusion. When the case 10 is made of a synthetic resin mixed with natural materials, which are biomaterials, it is difficult to fix the ultrasonic fusion by ultrasonic welding. Therefore, the polypropylene is further mixed and used in the synthetic resin in which the natural product is mixed for this ultrasonic fusion.

In other words, the polypropylene serves to increase the adhesive force during the ultrasonic fusion bonding of the case. This polypropylene is a thermoplastic resin having a stereoregularity obtained by polymerization using a Ziegler catalyst, having a structural formula of-(CH2-CHCH3) n-, and having a specific gravity of 0.90, which belongs to the lightest class of plastics. The chemical formula is as follows.

In general, ultrasonic fusion refers to thermal bonding using energy generated by vibrating molecules with frequency wavelength energy. In this case, polypropylene resin is used as an additive used. That is, polypropylene has a lattice structure as shown in the above formula, and has excellent spreadability during dielectric heating, strong recombination force, and low melt tension when melted by ultrasonic energy, so that it is well mixed with biomaterial, nylon or polyester The faster the crystallization rate, the faster the cooling properties, the better the mechanical adhesion.

Therefore, in the case of the biomaterial of the present invention, 20 to 30% by weight of polypropylene is used with respect to 100% by weight of the composition, and when used in an amount of less than 20% by weight, ultrasonic fusion of both ends of the sides of the case 10 is performed. When fixing with the adhesiveness, the problem is that the adhesiveness of the end of the case is weak due to poor adhesion and separation, and when used in an amount of more than 30% by weight, containing a relatively small blend containing herbal agricultural waste, Incineration of the case, which can be said to be a feature of the present invention, reduces the emission of toxic gases and prevents the effect of being decomposed when landfilled.

The synthetic resin in the composition is, for example, polyolefins such as LDPE, HDPE, MDPE, LLDPE, VLDPE, PP, PVC, EVA, PVAc and copolymers thereof, polyesters such as PET and PBT, NYLON-6, NYLON-66 and Polyacrylates, such as polyamides (PA), such as NYLON-11, PMMA, and an acrylic copolymer, are mentioned.

The amount of synthetic resin is preferably used in an amount of 10 to 50% by weight based on 100% by weight of the total composition. When used in an amount of less than 10% by weight, it is difficult to use as a product due to the sharp drop in dispersion and compatibility, and when used in an amount of more than 50% by weight, the resin content is excessive, so economic efficiency is low. In order to maintain sufficient strength of the product state, it is more preferably used in an amount of 18 to 30% by weight based on 100% by weight of the total composition.

The compatibilizer is a substance that imparts compatibility by removing the releasability between the non-polar synthetic resin and the polar herbal agricultural waste, and examples thereof include glycidyl methacrylate, ethylene vinyl alcohol (EVA), and polyvinyl. Alcohol (PVA), and ethylene vinyl acetate and the like can be used without limitation as long as it is commonly used in the art. However, more preferably, a polyolefin-based polymer of Formula 1 or a polyolefin-derived polymer of Formula 2 may be used. As a commercially available product, ADPOLY PH-200, EM-200, SMS-554 (Honam Petrochemical Co., Ltd.) etc. are mentioned, for example.

The compatibilizer is preferably used in an amount of 0.5 to 5% by weight based on 100% by weight of the total bioplastic composition of the present invention. When used in an amount of less than 0.5% by weight is insufficient compatibility may cause separation between layers, and when used in an amount of more than 5% by weight it is not possible to obtain an economic effect. More preferably, the amount is used in an amount of 0.5 to 3.0% by weight based on the total weight of the composition.

The lubricant for plastics is added as a component added to perform a smooth extrusion operation while preventing thermal decomposition by reducing frictional heat generated during bonding or strengthening affinity and blending and blending between the blend containing herbal agricultural waste and synthetic resin, When added, the mechanical properties provide smooth workability while maintaining similarity to the base material.

The lubricant may be one or a mixture of two or more selected from the group consisting of stearic acid salts, palmitate salts and laurate salts, which are environmentally friendly natural products. More preferably, calcium stearate, zinc stearate or mixtures thereof may be used.

The lubricant is preferably used in an amount of 0.5 to 3% by weight based on 100% by weight of the total bioplastic composition of the present invention. When used in an amount less than 0.5% by weight, the effect as a sufficient lubricant may not be obtained when forming the product, and when used in an amount of more than 3% by weight, defects in the product may occur or carbides or flow-marks may be formed when forming the product. ), Which hinders the beautiful aesthetics and of course no economic effect.

The oxidizing agent for plastic decomposition is a component added to break the polymer chain, and may be used without limitation as long as it is a plastic oxidizing agent commonly used in the art, and may be used in an amount of 0.1 to about 100% by weight of the bioplastic composition of the present invention. Preference is given to using in an amount of 1% by weight. For example, Korean Patent No. 10-0641272 to the present applicant includes metal components such as iron (Fe), zinc (Zn), manganese (Mn) and titanium (Ti), which promote oxidation of a polymer as an oxidation promoter. In addition, the additive may be added to the composition as a metal itself, or may be added in the form of an organic complex combined with an organic compound. When such an oxidizing agent for decomposition is used in an amount of less than 0.1% by weight relative to 100% by weight of the composition, the degradation effect is insignificant, and when used in an amount of more than 1% by weight, economical efficiency is low.

Formulation containing herbal agricultural waste used in the present invention is a bran (or husk) of cereals, including corn, oats, rice, wheat, barley, rice straw, corn, barley, wheat, rapeseed, sunflower It means a blend containing porous by-products or mixtures thereof, except for grains or seeds obtained from herbal farm products such as bar of grains including bar and the like.

The blend containing the herbal agricultural wastes occupies the remaining amount excluding the resin, the compatibilizer, the lubricant and the inorganic filler in the bioplastic composition of the present invention.

Additionally, the blend containing the herbal based agricultural wastes may include 5-20 wt% of inorganic fillers and 0.5-2 wt% of the surface coating agent with respect to 100 wt% of the herbal based agricultural wastes. More preferably, the filler is an impregnated powdery coating.

The inorganic filler is a material deposited in the pores of the powdery herbal agricultural waste, and consists of calcium carbonate, glass fiber, talc, mica, silica, clay powder, wollastonite, talc, kaolin powder, silica, mica, kaolin and titanium dioxide. One or a mixture of two or more selected from the group may be used.

In order to improve the physical properties of the plastic, the inorganic filler is used in which the nano-size powder in an amount of 1 to 50% of the total 100%. More preferably, those containing 80 to 100 nm in powder in an amount of 10 to 30% are used. In addition, the inorganic filler is preferably used in an amount of 5 to 20% by weight based on 100% by weight of the herbal agricultural waste. When used in an amount of less than 5% by weight, the amount of impregnation in porous herbal agricultural waste is small, so that the surface is not sufficiently modified and air and moisture remain in the interior of the process, resulting in water and gas. When used in an amount of more than 20% by weight is deposited in the herbal agricultural wastes and the remaining amount is excessive may be a cause of lowering the mechanical properties of the final compound.

The surface coating agent is a material capable of coating the surface of the herbal agricultural waste to prevent water evaporation, one or two or more mixtures selected from the group consisting of stearates, palmitates and laurates may be used. Can be. More preferably, calcium stearate, zinc stearate or mixtures thereof may be used.

The surface coating agent is preferably used in an amount of 0.5 to 2% by weight based on 100% by weight of the herbal agricultural waste. If the amount is less than 0.5% by weight, the coating may not be sufficient to prevent the reabsorption of moisture on the surface of the powder. If the amount is more than 2% by weight, the slip between the polymer compound and the natural product in the final melt extrusion step is used. Decreases mechanical properties by causing.

 In addition, a variety of well-known components that can be used as additives for plastic production can be added in a predetermined amount to improve processability, product stability, product performance, and the like. For example, a surface treating agent may be added in a predetermined amount to enhance bonding strength and reduce repulsion, and a stabilizer may be added to maintain the physical and chemical properties of the resin during the life of the plastic product so as not to decompose. It can be added in an amount of.

In the present invention, linear organic thermal stabilizers and antioxidants (irganox 1010 or 1076 series) having a molecular weight of less than 2,000 are added in predetermined amounts in order to prevent deformation and carbonization of the compound to maintain mechanical properties and processing stability. It is also desirable to.

The operation of the plastic bag manufactured from the biomaterial according to the embodiment of the present invention having the above configuration will be described briefly.

First, by folding the fold line 23 formed in the center of the sheet of bioplastic sheet 20 formed by T-DIES extrusion molding, as shown in FIG. Try to face each other. Then, the coupling protrusions 27 formed on the lower ends of both sides 21 and 22 are folded to be coupled to each other. At this time, the fitting protrusions 27 of the coupling protrusions 27 are engaged with each other. Will be combined.

Subsequently, end portions of the adhesive part 21a and the other side 22 formed on one side 21 of both side surfaces 21 and 22 are fixed by ultrasonic fusion.

That is, by folding the fold line 23 formed in the plastic sheet 20 to face both sides (21, 22), both ends (21, 22) both ends so that the receiving space is formed in the shape of an ellipse inside After pressing to form a convex shape, the end portions of the adhesive portion 21a and the other side 22 of one side 21 are fixed by ultrasonic fusion.

Then, the engaging protrusions 27 are folded in a direction facing each other such that the fitting grooves 27a are fitted to each other so that the combined engaging protrusions 27 form a flat pedestal.

Subsequently, after receiving the roll-shaped vinyl bag 30 in the accommodation space formed inside the plastic sheet 20 so as to be supported by the coupling protrusion 27, the end of the plastic bag 30 is placed in the case 10. After withdrawing through the outlet provided in the fixed fixture 25 temporarily, it is exposed to the upper portion of the case 10 to a predetermined length.

Subsequently, when the product is to be contained, the plastic bag 30 is pulled out to a length as long as it is intended to be used, and then the plastic bag 30 is cut to a predetermined length by pressing the plastic bag 30 on the cutting part 26.

10 case 20 bioplastic sheet
21: one side 22: the other side
23: fold line 24: outlet
25: fixture 26: cutout
27: binding protrusion 30: plastic bag

Claims (6)

With respect to 100% by weight of the total composition,
10 to 50% by weight of one or two or more synthetic resins selected from the group consisting of polyolefin-based polymers, polyester-based polymers, polyamide-based polymers and polyacrylate-based polymers, and compatibility between the synthetic resin and powdery herbal based agricultural waste Bio-material comprising; a formulation containing 0.5 to 5% by weight of a compatibilizing agent, 0.5 to 3% by weight of plastic lubricant, 0.1 to 1% by weight of oxidizing agent for plastic decomposition and residual amount of powdered herbal based agricultural waste Vinyl bag using.
The method according to claim 1,
The herbaceous agricultural waste is a plastic bag using a bio material, characterized in that the porous grain shell, grain bar or a mixture thereof.
The method according to claim 1,
The blend containing the herbaceous agricultural waste comprises 5 to 20% by weight of the inorganic filler and 0.5 to 2% by weight of the agricultural waste surface coating agent with respect to 100% by weight of the herbal agricultural waste, vinyl using the bio-material back.
Bio plastic sheet for folding the fold line formed in the center to form both sides and the receiving space therein;
An adhesive part formed to be folded at an end of one side of the both sides, and bonded to an end of the other side by ultrasonic;
Coupling protrusions protruding from one end of each of the two sides, and formed to be folded by a fold line extending from one end of the edge;
Is formed on any one of the two sides, the outlet for withdrawing the end of the plastic bag; And
Vinyl bag case using a bio material, characterized in that it comprises a cutting unit for cutting the plastic bag drawn out through the outlet to a predetermined length.
The method according to claim 4,
The bio plastic sheet
With respect to 100% by weight of the total composition,
10-50% by weight of one or two or more types of synthetic resins selected from the group consisting of polyolefin-based polymers, polyester-based polymers, polyamide-based polymers and polyacrylate-based polymers, 20-30% by weight of polypropylene, and the synthetic resin and powder 0.5 to 5% by weight of a compatibilizer for providing compatibility between herbal agricultural wastes, 0.5 to 3% by weight of lubricant for plastics, 0.1 to 1% by weight of oxidizing agent for plastic decomposition, and a blend containing powdery herbal agricultural wastes; Plastic bag case using a bio material, characterized in that it comprises a.
The method according to claim 5,
The blend containing the herbaceous agricultural waste comprises 5 to 20% by weight of the inorganic filler and 0.5 to 2% by weight of the agricultural waste surface coating agent with respect to 100% by weight of the herbal agricultural waste, vinyl using the bio-material back.

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