KR20070102966A - Mixing material preparation method for production biodegradable article using sludge from paper manufacturing - Google Patents

Abstract

A method for preparing mixed materials for manufacturing a biodegradable molding product is provided to recycle waste resource and reduce the waste resource, by manufacturing the biodegradable molding product using paper sludge as a main material. Mixed sludge is prepared by using fibrous powder, paper sludge, or mixture of the fibrous powder and the paper sludge. The prepared mixed sledge is uniformly mixed and stirred(S11). A gelatinated gel is formed by adding water of 10-80°C and 100-150 wt% into a first material powder of 100 wt%, and stirring the water and the first material powder(S12). A final mixture is prepared by mixing the mixed sludge of 100 wt%, the gelatinated gel of 1-50 wt%, and a second material powder of 1-60 wt%(S13). The final mixture is kneaded(S14).

Description

Mixing material preparation method for production biodegradable article using sludge from paper manufacturing}

1 is a process flow chart illustrating a method for producing a mixed material for producing a biodegradable molded article using paper sludge according to the present invention.

Figure 2 is a copy of the test report results for a biodegradable disposable dish, which is an embodiment (Examples 1 to 10) manufactured using a mixed material for producing a biodegradable molded article using paper sludge according to the present invention.

The present invention relates to a method for manufacturing a biodegradable molded article using paper sludge, and more particularly, to produce a biodegradable molded article using paper sludge as a main material for the purpose of recycling waste materials and reducing waste. A method for producing a mixed material.

From the perspective of the role sharing system of the country, local governments, and businesses, the current direction of industrial waste management in Korea is the responsibility of the management and proper disposal of domestic waste, but the responsibility of the disposal of industrial waste lies with the operators. Therefore, industrial waste management focuses on safe disposal and transportation management centered on the operators. Accordingly, the reduction of industrial waste is mainly determined by the voluntary participation of the operators, which makes it difficult to determine the effectiveness. However, as the importance of preventing or recycling wastes is emphasized, it is difficult to maximize the effects of waste management policies only through voluntary participation by operators. Therefore, it is time for more aggressive policies or strategies to reduce or recycle industrial waste, which takes up a large amount of waste in the country as a whole.

Paper sludge, one of these industrial wastes, is an essential material in the paper industry. In the domestic paper industry, paper consumption per capita continues to grow at over 200kg per year, and the paper sludge produced during the treatment of the paper mill wastewater is also increasing every year. The amount is around 3 million tons per year. It is estimated. When the paper sludge is discharged to nature as it is, it is required to be reprocessed or recycled because it acts as a pollution source that destroys the environment, but the cost is not small.

On the other hand, the plastics conventionally used most widely in human life also have many problems in their processing when their use is exhausted. Therefore, some efforts have been made to manufacture biodegradable plastic products to solve the difficult or impossible biodegradability of conventional plastic products. On the other hand, efforts have been made to manufacture household goods using new materials that can replace such plastic products. A representative example is the development of substitutes using starch materials. However, since starch can be obtained from natural materials through several stages of processing, its cost is high and its suitability for materials such as household goods consumed in large quantities is low, and it is not susceptible to moisture or sufficient strength is not realized. Due to a number of shortcomings, other alternatives continue to be explored.

The present invention solves these two aspects, namely, to solve the problem of environmental pollution source of paper sludge and to develop an eco-friendly general purpose material of plastic or its substitutes. Efforts have been made to present a method, and the present invention has been made in view of this technical background.

The technical problem to be achieved by the present invention based on the above-described conventional problems, by using environmentally harmless materials with the creation of an eco-friendly atmosphere through the disposal or recycling of environmental pollutants and the economic cost of recycling the resources In developing materials for manufacturing household goods, in particular, in order to achieve the technical task of developing eco-friendly materials as well as the treatment of paper sludge, which has emerged as an environmental pollution source, it is possible to knead the mixture of paper sludge and materials obtainable from nature. It is an object of the present invention to provide a mixed material for producing a biodegradable molded article using paper sludge, which can be prepared and added to this process to produce household goods and the like.

The present invention provided for achieving the above technical problem to be achieved by the present invention, in the method for producing a biodegradable molded article using a mixed material for producing a biodegradable molded article, (S11) fibrous material powder, paper sludge or fibrous material powder and paper sludge To prepare a mixed sludge by mixing, the fiber material powder, 1 to 50 parts by weight compared to 100 parts by weight of the mixed sludge, sugar cane, rice straw, barley straw, reed, wheat straw, corn, coconut, grasses, wild grass And a single fibrous material powder prepared from a selected one of cotton wool or a mixed fibrous material powder selected from two or more single fibrous material powders selected from these fibrous material powders, and the papermaking sludge has a water content of 10 to 90%, 1 to 70 parts by weight, based on 100 parts by weight of mixed sludge, to remove suspended solids in the wastewater treatment process of the papermaking process. Is any one selected from the first paper sludge separated in the process, the second paper sludge generated in the biological treatment process of the wastewater and the third paper sludge generated in the deinking process, so that the prepared mixed sludge is mixed uniformly. Stirring; (S12) A single natural material powder prepared from one selected from wheat, glutinous rice, rice, barley, corn, potato, sweet potato and tapioca, or a mixed natural material powder in which at least two selected from these natural material powders are mixed, and the temperature thereof is 10 Adding a water having a content of 100 to 1500 parts by weight based on 100 parts by weight of the first natural material powder to 80 ° C., and mixing and stirring the same to form a gel; (S13) In the resultant of the step (S11), the content is 1 to 40 parts by weight relative to 100 parts by weight of the resultant of the step (S11) and the result of the step (S12), wheat, glutinous rice, rice, barley, corn, A single natural material powder prepared from one selected from potato, sweet potato and tapioca or a mixed natural material powder containing two or more selected from these natural material powders, the content of which is 1 to 50 parts by weight based on 100 parts by weight of the result of step (S11). Adding and mixing each of the second natural material starch in parts by weight; And (S14) kneading the resultant of the step (S13).

In this case, in the method for producing a mixed material for producing a biodegradable molded article using papermaking sludge according to the present invention, the mixture stirring speed in step (S11) is preferably 50 to 500 rpm, and the mixture stirring in step (S12). The speed is preferably 50 to 300 rpm, and heating for modification to the gel of the step (S12) is preferably performed for 2 to 30 minutes by an external indirect heating method of 100 to 180 ° C. The dough of step (S14) is preferably performed for 10 to 30 minutes in the temperature range of 60 to 150 ℃.

On the other hand, in the manufacturing method of the mixed material for producing a biodegradable molded article using the papermaking sludge according to the present invention, after the step (S14), by pressing the dough prepared from the step (S14) to produce a sheet-like, dried It is preferable to further include the step of making.

In the mixed material manufacturing method for producing a biodegradable molded article using paper sludge according to the present invention, 1 to 10% by weight of the weight of the mixture before stirring the mixture of the first natural material powder and water in the step (S12) It is preferable to proceed further by adding a pigment. At this time, the pigment, titanium dioxide, zinc oxide, iron oxide, chromium oxide, iron black, cobalt blue, alumina (white), iron oxide, bilidian, zinc sulfide, leader phone, cadmium yellow, cadmium red, chromate, molybdate Date orange, zinc chromate, strontium chromate, white carbon, clay, talc, ultramarine blue, precipitated barium sulfate, bare light powder, calcium carbonate, light white, ferrocyanide (blue), phosphate (manganese violet) , Carbon (Carbon Black), Laudermin Lake, Methyl Violet Lake, Kinolin Yellow Lake, Malachite Green Lake, Alizarin Lake, Carmine 6B, Lake Red C, Disazo Yellow, Lake Red 4R, Chromophthal Yellow 3G, Chromorph Tal Scarred RN, Nickel Azo Yellow, Permanent Orange HL, Phthalocyanine Blue, Phthalocyanine Green, Flavanthlon Yellow, Geoindigobold, Perinone Orange, Perylene Red, Dioxadine Violet, Key Cri all red, it is preferred if the isoindoline yellow, within peutol Yellow S, Pigment Green B, Lu mogen yellow, the signal red, alkali blue, and black is not referred to any one or a mixture of two or more selected ones.

Further, in the step (S13), glycerin, gelatin, intelligence enhancer, alpha (α) -amylase, beta (β) -amylase glucoin in an amount of 1 to 5 parts by weight relative to 100 parts by weight of the mixture prepared in step (S13). It is preferable to further include the step of further adding a functional additive of any one selected from amylase (glucoamylase), isoamylase, debranching amylase and emulsion zone.

Hereinafter, the present invention will be described in detail with reference to examples, and detailed description will be made with reference to the accompanying drawings in order to help understanding of the present invention. However, embodiments according to the present invention can be modified in many different forms, and the scope of the present invention should not be construed as being limited to the embodiments described below. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art.

1 is a flowchart illustrating a method for producing a mixed material for producing a biodegradable molded article using paper sludge according to the present invention.

It is apparent that the method for preparing a mixed material for producing a biodegradable molded article using paper sludge according to the present invention is an independently completed invention that can sufficiently achieve the object of the present invention by using only the steps (S11) to (S14). By following the subsequent steps (steps S15 and S16), an understanding of the specific implementation of the present invention can be achieved. On the other hand, the steps (S11) and (S12) is not necessarily a fixed order of progress by the mutual time flow, it is apparent that may proceed in a different order as described above, each may proceed simultaneously.

In FIG. 1, after preparing a mixed sludge which is a fibrous material powder, paper sludge or a mixture of fibrous material powder and paper sludge, stirring to uniformly mix (step S11), and mixing and heating the first natural material powder and water. Step (S12) of the gel (gel), the mixing of the (S11) resultant, the second natural material powder and the (S12) resultant (gel) step (S13), kneading the resultant (S13) ( S14 step), pressurizing the dough of (S14) is produced in a sheet form, and then dried (S15 step) and the molded article manufacturing step using the sheet-like material (S16 step), it is shown that each Each step will be described in detail.

(S11) mixing and stirring step of fibrous material powder, paper sludge or mixed sludge which is a mixture of fibrous material powder and paper sludge

The fibrous material powder is a single fibrous material powder prepared from one selected from sorghum, rice straw, barley straw, reed, wheat straw, corn cob, coconut, grass, wild grass and cotton wool or at least two single fibrous material selected from these fibrous material powder. Mixed fibrous material powder mixed with powder may be used. The paper sludge is the first paper sludge separated in the process of removing the suspended solids in the wastewater treatment process of the papermaking process, the second paper sludge generated in the biological treatment process of the wastewater and the third paper sludge generated in the deinking process And the like can be used.

At this time, the content of the fibrous material powder is preferably 1 to 50 parts by weight relative to 100 parts by weight of the mixed sludge, and the content of the papermaking sludge is preferably 1 to 70 parts by weight relative to 100 parts by weight of the mixed sludge. At this time, the water content of the papermaking sludge is preferably 10 to 90%. In relation to the numerical range of the content of the fibrous material powder, if it falls below the lower limit, the binding force of the product is deteriorated due to the lack of necessary fiber, which is not preferable. When the upper limit is exceeded, the binding force between the fibers due to the excess of the fiber is It is not preferable because it is excessively improved and natural ingredients and separation occur. On the other hand, with respect to the numerical range for the content of the papermaking sludge, when the lower limit is reached, the binding force between the fibers is excessively improved due to the excess of the fiber, which is not preferable because the separation between the natural material and the separation occurs, and exceeds the upper limit. If the amount of fiber contained in the papermaking sludge is insufficient, the bonding strength of the product is not good, it is undesirable.

On the other hand, the stirring speed for uniformly mixing the mixed sludge which is a mixture of the fibrous material powder and papermaking sludge is preferably 50 to 500 rpm. Regarding the numerical range of the stirring speed for the mixed sludge, when the lower limit is reached, the paper sludge with a relatively high specific gravity sinks toward the bottom due to the difference in specific gravity between the paper sludge and the fibrous material powder, and the specific gravity is relatively low. Small fibrous material powder is not preferred because it is arranged floating to the upper side because it is not uniformly mixed, if exceeding the upper limit it is not desirable to change the product properties due to the change in fiber length. In other words, attention is required to ensure an appropriate stirring speed for uniform mixing of fibrous material powder and papermaking sludge.

(S12) gelling by mixing and heating the first natural material powder and water

The first natural material starch is a single natural material powder prepared from one selected from wheat, glutinous rice, rice, barley, corn, potato, sweet potato and tapioca, or a mixed natural material powder in which two or more selected from these single natural material powders are mixed. Is preferable. On the other hand, the water is mixed with the first natural material powder, the temperature is preferably 10 to 80 ℃ and the content is 100 to 1500 parts by weight relative to 100 parts by weight of the first natural material starch. Since the water to be mixed is mixed based on the first natural material powder, the mixing is performed at a constant content irrespective of the water content of the paper sludge constituting the mixed sludge, which can be easily performed by those skilled in the art.

In relation to the numerical range for the temperature of the water used, since the gelation is performed in a range lower than the temperature range in which the first natural material powder should be gelatinized when it is out of the temperature range, the desired viscosity is not given, which is not preferable. Can not do it. Since the portion of viscosity of the gel (gel) property is a problem directly related to the strength, attention is required to maintain the temperature conditions of the water used.

On the other hand, with respect to the numerical range for the content of the water used, if the lower limit value is less than the viscosity of the gel (gel) produced is not preferable to be carbonized in the kneading process, if the upper limit exceeds the viscosity of the gel (gel) It is too weak to supplement the required strength, which is undesirable.

On the other hand, the stirring speed of the mixture of the first natural material starch and water in the step (S12) is preferably 50 to 300 rpm. Regarding the numerical range for the stirring speed of the mixture of the first natural material starch and water, attention is required to ensure sufficient stirring speed because it is a condition required to ensure the uniformity of the mixing.

And, in the step (S12) while mixing and stirring the mixture to gel (gel) to modify the gel (gel) it is preferable to heat for 2 to 30 minutes by an external indirect heating method at a temperature of 100 to 180 ℃. Since the temperature of the mixed solution of the first natural material and water uniformly mixed is heated to a range of 60 to 100 ° C., which is an optimized temperature range for gelatinization, a gel of a desired physical property may be manufactured. Thermal energy with a temperature of from 180 ° C. should be allowed to be transferred to the mixture. Regarding the numerical range for the heating temperature using the external heat source, when the lower limit is reached, the temperature is lower than the optimized temperature range of the gel, and thus, a sufficient gel cannot be formed. Aging or carbonization may occur because it is beyond the range of gelation, which is undesirable.

On the other hand, with respect to the numerical range for the heating time by the external indirect heating method, if it is less than the lower limit, it is not preferable because there is not enough time for achieving sufficient gelation (gel) is not achieved, the upper limit value If it exceeds the temperature difference between the surface layer and the bottom layer of the gel (gel) occurs, the over-gel (gel) phenomenon, that is, the aging or carbonization phenomenon is located in the bottom layer is not preferable because the quality of the gel (gel) is reduced. Therefore, it is preferable to maintain the temperature condition of gelation, but not to make the gelation time too long, so that the external heat source can be used as a rapid rapid heating.

In addition, before the mixture of the first natural material powder and water in the step (S12), it is preferable to further include adding 1 to 10% by weight of the pigment with respect to 100 parts by weight of the mixture. Regarding the numerical range for the amount of the pigment added, if the amount is lower than the lower limit, the amount of the pigment added cannot achieve the purpose of addition, and thus does not express the required color, and the viscosity increase effect of the gelatinous liquid is insufficient. If the upper limit value is exceeded, it is not preferable because the gelation degree does not sufficiently progress due to lack of moisture due to excessive addition of the pigment. At this time, the pigment, titanium dioxide, zinc oxide, iron oxide, chromium oxide, iron black, cobalt blue, alumina (white), iron oxide, bilidian, zinc sulfide, leader phone, cadmium yellow, cadmium red, chromate, molybdate Date orange, zinc chromate, strontium chromate, white carbon, clay, talc, ultramarine blue, precipitated barium sulfate, bare light powder, calcium carbonate, light white, ferrocyanide (blue), phosphate (manganese violet) ), Carbon (Carbon Black), Laudermin Lake, Methyl Violet Lake, Kinolin Yellow Lake, Malachite Green Lake, Alizarin Lake, Carmine 6B, Lake Red C, Disazo Yellow, Lake Red 4R, Chromophthal Yellow 3G, Black Morphal Scarred RN, Nickel Azo Yellow, Permanent Orange HL, Phthalocyanine Blue, Phthalocyanine Green, Flavanthlon Yellow, Geoindigobold, Perinone Orange, Perylene Red, Dioxadine Violet, Key Cri there is any red, isoindoline yellow, within peutol Yellow S, Pigment Green B, Lu mogen yellow, red signal, any one or two or more mixtures selected from alkali blue, and black is not referred to may be used. It is apparent that the selection of such a pigment can be appropriately selected in consideration of the use, color, and the like of the molded article to be manufactured.

(S13) (S11) Result, second natural material powder and functional additive (S12) Result (mixing step of gel

The second natural material powder is a single natural material powder prepared from one selected from wheat, glutinous rice, rice, barley, corn, potato, sweet potato and tapioca, or mixed natural material powder in which two or more selected from these single natural material powders are mixed. It is preferable if this is used.

The functional additives, glycerin, gelatin, intelligence enhancers, alpha (α) -amylase, beta (β) -amylase glucoamylase, isoamylase, debranching amylase, emulsion, etc. It is used for ductility and strength increase, surface improvement, and one or more selected materials may be used.

To the resultant of the step (S11), the second natural material powder and the functional additives and the resultant of the step (S12) is added to prepare a mixture, the content of the second natural material powder is the resultant of the step (S11) 1 to 70 parts by weight based on 100 parts by weight, and the content of the functional additive, it is preferable to use 1 to 5 parts by weight relative to 100 parts by weight of the total mixture prepared in the step (S13). On the other hand, the content of the product of the step (S12) is preferably used 1 to 50 parts by weight relative to 100 parts by weight of the product of the step (S11). Regarding the numerical range of the use amount of the second natural material powder, when the lower limit is reached, the binding force is lowered due to the lack of the required gluten to obtain the required viscoelasticity, and when the upper limit is exceeded, excess gluten is produced. This is undesirable because of the carbonization phenomenon in the dough.

(S14) kneading the result of (S13)

The mixture of each component according to the step (S13) is kneaded for 10 to 30 minutes in the temperature range of 60 to 150 ℃ to obtain a dough having the required viscoelasticity. In relation to the numerical range for the dough temperature, if the dough temperature for the dough is out of the viscoelasticity of the dough is difficult to secure it is not preferable. On the other hand, with respect to the numerical range for the kneading time, if the lower limit value is not reached, the required degree of viscoelasticity is not secured, and thus the bonding strength between the materials constituting the dough is maintained, which is not preferable. If it exceeds the aging phenomenon occurs viscoelasticity exceeds the maximum, the bonding force between the materials constituting the dough is sharply lowered is not preferable. The gel (gel), which is the result of step (12) constituting the dough, serves to maximize the viscoelasticity of the second natural material powder together with the function of reinforcing the network structure of the cellulose-containing material resulting from the fibrous material powder. do.

(S15) pressurizing the dough in (S14) to prepare a sheet shape and then drying

By preparing the dough in step (S14), the preparation of the mixed material for manufacturing the molded article is completed first, but the intermediate processing is performed in the form of a sheet rather than the dough in order to facilitate the mass production or the manufacturing process. You may proceed further. Appropriate pressure conditions are applied to the dough prepared through the steps (S11) to (S14) to deform into sheets. Since the sheet material having the desired thickness and width can be manufactured by adjusting the pressurizing conditions, special attention is required to control the sheet.

In order to sheet the dough, it is subjected to a rolling roller process, which is a process of maximizing the viscoelasticity of the dough to change it into a desired shape. The dough is in a state in which the viscoelasticity of the natural material powder is maximized, but the gelation due to the rapid temperature difference (atmosphere temperature) is affected, and thus the dough must undergo a shape transformation process in a sheet state within a short time. Therefore, the shorter the interval between the rolling roller and the kneader is, the easier it is. The rolling rollers are preferably configured in series, and the gap between the rollers and the rollers should be defined in a range smaller than the thickness of the sheet. In order for the sheet to be manufactured while having a constant directionality, the continuously arranged rollers must have a progressively increased number of revolutions at a constant rate along the traveling direction.

The sheet produced while passing through the rolling roller as described above is subjected to a drying process. In the drying process, drying is performed by using hot air and direct heat of 100 ° C. or higher. In order to prevent shrinkage of the sheet which may occur during drying, the drying process is divided into indirect heat sections (hot winds) and direct heat sections. Proceed with the process. In the case of the indirect heat section, the temperature condition is preferably 80 to 130 ° C, and the direct heat section is preferably 90 to 140 ° C.

In relation to the numerical range for the temperature range for the drying conditions, the drying efficiency is lowered if it is lower than the lower limit, and if the upper limit is exceeded, the internal drying rate due to surface foaming and surface drying is lowered by excessive heat. Not desirable

(S16) step of manufacturing a molded article using a sheet-like material

Mounted in a molding machine equipped with a molding mold having a shape corresponding to the purpose and use intended to produce a molded article manufacturing sheet material prepared through the step (S15), and then molded by applying an appropriate compressive force, the molded article required by discharging the molded article Can be prepared.

(S17) coating the manufactured sheet-like material and the molded article

It is preferable to add a coating process for the purpose of imparting functionality such as water resistance, water repellency, waterproofing, oil resistance, heat resistance, cold resistance, etc. to the sheet member manufactured by the step (S15) or the molded article manufactured by the step (S16). Do. Suitable coatings for the coating process include sodium silicate, orthosilicate, siloxane, organic polymer dispersed colloidal silica, colloidal silica in film, colloidal silica in fiber, microbial decomposable plastics, calcium carbonate, acryl, poly Acrylates, polyurethanes, polyethylenes, synthetic polymers, hydroxypropylmethyl cellulose, polyethylene glycols, kaolin clays, proralalmines, polyvinyl chlorides, polyvinyl alcohols, polyvinyl acetates, ceramics, polyesters, biodegradable polyesters and waxes One or more materials selected from the group consisting of can be used.

Example (1-10)

Using a material according to Examples (1 to 10) divided according to the following Table 1, and proceeding the process according to the following (S11) to (S16) to prepare a disposable plate which is a biodegradable molded article.

division Example One 2 3 4 5 6 7 8 9 10 Paper sludge used in (S11) Moisture content (%) 10 30 50 70 20 50 60 - - - Weight (kg) 35 45 60 60 30 45 50 - - - Fiber material powder weight (kg) used in (s11) - - - - 10 15 15 35 45 60 Weight of flour added to (S13) (kg) 25 27 33 38 30 33 33 30 30 30 Result weight (kg) used in (S13) 40 28 7 2 30 7 2 35 25 10

(S11) In Table 1, Examples 1 to 4 were used only for paper sludge, and Examples 5 to 7 were used for mixing sludge mixed with paper sludge and fibrous material powder. In Examples 8 to 10, only fibrous material powder was used, and materials according to Table 1 were prepared, respectively.

(S12) 100 kg (30 ° C.) of water and 1 kg (white) of titanium dioxide were added to 10 kg of wheat flour, stirred at 200 rpm, and heated to 150 ° C. for 20 minutes to prepare a gel.

(S13) 200 rpm after the input of the resultant of the step (S12) having the amount of the flour according to Table 1, the functional additive gelatin 3kg, and the amount according to the table 1 to the result prepared in step (S11), Mixed. Meanwhile, the water content of the (S13) resulted in reaching 10 to 80% of the total weight.

(S14) The mixture of step (S13) was kneaded at 130 ° C. for 20 minutes to prepare a dough.

(S15) by pressing the dough obtained in the step (S14) to a sheet thickness of 0.5mm, width 450mm and dried under the temperature conditions of indirect heat 85 ℃, direct heat 140 ℃ to prepare a sheet. The moisture content of the dried sheet material was to reach about 1 to 20% of the total weight.

(S16) The sheet obtained in the step (S15) was heated to 80 ℃ and pressurized for 30 seconds at 150kg / ㎠ pressure to produce a disposable dish having a diameter of 180 ㆈ.

Figure 2 is a copy of the test report results for a biodegradable disposable dish, which is an embodiment (Examples 1 to 10) manufactured using a mixed material for producing a biodegradable molded article using paper sludge according to the present invention.

As can be seen through Figure 2, the product produced according to the present invention can be confirmed that it is an environmentally friendly product is not detected harmful substances to the human body.

Optimal embodiments of the present invention described above have been disclosed. Although specific terms have been used herein, they are used only for the purpose of describing the present invention in detail to those skilled in the art, and are not used to limit the scope of the present invention as defined in the meaning or claims.

According to the present invention, new uses for recycling waste paper that can act as environmental pollutants as industrial waste are pioneered, and various products such as environmentally friendly household goods can be developed by manufacturing various molded products using biodegradable materials. There is an advantage.

Claims (20)

In the manufacturing method of a mixed material for producing a biodegradable molded article using paper sludge, (S11) Prepare the mixed sludge by mixing the fibrous material powder, paper sludge or fibrous material powder and paper sludge, The fibrous material powder is contained in 1 to 50 parts by weight based on 100 parts by weight of the mixed sludge, prepared from one selected from sugar cane, rice straw, barley straw, reed, wheat straw, corn bark, coconut, grass, wild grass and cotton wool. It is a mixed fibrous material powder in which a single fibrous material powder or two or more single fibrous material powders selected from these fibrous material powders are mixed. The papermaking sludge has a water content of 10 to 90% and is included in an amount of 1 to 70 parts by weight based on 100 parts by weight of the mixed sludge, and is separated from the process of removing suspended solids in the wastewater treatment process of the papermaking process. , The second paper sludge produced in the biological treatment process of wastewater and the third paper sludge produced in the deinking process, Stirring the prepared mixed sludge to be uniformly mixed; (S12) first natural material powder which is a single natural material powder prepared from one selected from wheat, glutinous rice, rice, barley, corn, potato, sweet potato and tapioca or a mixed natural material powder in which two or more selected from these natural material powders are mixed; To a temperature of 10 to 80 ° C., the content of which is 100 to 1500 parts by weight of water relative to 100 parts by weight of the first natural material powder, and the mixture is heated with stirring to denature to gel; (S13) In the resultant of the step (S11), the content is 1 to 50 parts by weight relative to 100 parts by weight of the resultant of the step (S11) and the result of the step (S12), wheat, glutinous rice, rice, barley, corn, It is a single natural material powder prepared from one selected from potato, sweet potato and tapioca or mixed natural material powder in which two or more selected from these natural material powders are mixed, and the content thereof is 1 to 60 parts by weight based on 100 parts by weight of the resultant step (S11). Adding each of the second natural material powders by weight; And (S14) step of kneading the resultant of the step (S13); manufacturing method of the mixed material for producing a biodegradable molded article using a papermaking sludge, characterized in that it proceeds. The method of claim 1, The mixture stirring speed in the step (S11) is 50 to 500 rpm, characterized in that the mixing material manufacturing method for producing a biodegradable molded article using paper sludge. The method of claim 1, The mixture stirring speed in the step (S12) is 50 to 300 rpm, characterized in that the biodegradable molded article manufacturing mixed material manufacturing method using paper sludge. The method of claim 1, Method for producing a biodegradable molded article using a paper sludge, characterized in that for heating the gel (gel) modification of the step (S12) for 2 to 30 minutes by an external indirect heating method of 100 to 180 ℃. . The method of claim 1, The dough of step (S14), the mixed material manufacturing method for producing a biodegradable molded article using paper sludge, characterized in that for 10 to 30 minutes in the temperature range of 60 to 150 ℃. The method according to any one of claims 1 to 5, Before the mixture of the first natural material starch and water in the step (S12) step of adding a pigment of 1 to 10% by weight relative to the weight of the mixture biodegradable using a paper sludge, characterized in that proceeding further Method for producing a mixed material for producing a molded article. The method of claim 6, The pigments are titanium dioxide, zinc oxide, iron oxide, chromium oxide, iron black, cobalt blue, alumina (white), iron oxide, bilidian, zinc sulfide, leader phone, cadmium yellow, cadmium red, chromate salt, molybdate orange , Zinc chromate, strontium chromate, white carbon, clay, talc, ultramarine blue, precipitated barium sulfate, bare light powder, calcium carbonate, light white, ferrocyanide (blue), phosphate (manganese violet), carbon (Carbon Black), Laudermin Lake, Methyl Violet Lake, Kyolin Yellow Lake, Malachite Green Lake, Alizarin Lake, Carmine 6B, Lake Red C, Disazo Yellow, Lake Red 4R, Chromophthal Yellow 3G, Chromophthal Ska Red RN, Nickel Azo Yellow, Permanent Orange HL, Phthalocyanine Blue, Phthalocyanine Green, Flavanthlon Yellow, Geoindigobold, Perinone Orange, Perylene Red, Dioxadine Violet, Kinakrye Biodegradable molded article using paper sludge, characterized in that any one or a mixture of red, isoindolin yellow, naphthol yellow S, pigment green B, lumogen yellow, signal red, alkali blue and anila black Method for producing a mixed material for production. The method according to any one of claims 1 to 5, After the step (S14), pressurized dough prepared from the step (S14) to produce a sheet-like, and then further comprising the step of drying the biodegradable molded article manufacturing mixed material using a paper sludge Manufacturing method. The method of claim 8, Biodegradability using paper sludge, characterized in that further comprising the step of adding a pigment of 1 to 10% by weight relative to the weight of the mixture before stirring the mixture of the first natural material powder and water in the step (S12) Method for producing a mixed material for producing a molded article. The method of claim 9, The pigments are titanium dioxide, zinc oxide, iron oxide, chromium oxide, iron black, cobalt blue, alumina (white), iron oxide, bilidian, zinc sulfide, leader phone, cadmium yellow, cadmium red, chromate salt, molybdate orange , Zinc chromate, strontium chromate, white carbon, clay, talc, ultramarine blue, precipitated barium sulfate, bare light powder, calcium carbonate, light white, ferrocyanide (blue), phosphate (manganese violet), carbon (Carbon Black), Laudermin Lake, Methyl Violet Lake, Kyolin Yellow Lake, Malachite Green Lake, Alizarin Lake, Carmine 6B, Lake Red C, Disazo Yellow, Lake Red 4R, Chromophthal Yellow 3G, Chromophthal Ska Red RN, Nickel Azo Yellow, Permanent Orange HL, Phthalocyanine Blue, Phthalocyanine Green, Flavanthlon Yellow, Geoindigobold, Perinone Orange, Perylene Red, Dioxadine Violet, Kinakrye Biodegradable molded article using paper sludge, characterized in that any one or a mixture of red, isoindolin yellow, naphthol yellow S, pigment green B, lumogen yellow, signal red, alkali blue and anila black Method for producing a mixed material for production. The method according to any one of claims 1 to 5, In the step (S13), glycerin, gelatin, intelligence enhancer, alpha (α) -amylase, beta (β) -amylase glucoamylase in an amount of 1 to 5 parts by weight based on 100 parts by weight of the mixture prepared in (S13) Mixed glucoamylase), isoamylase, debranching amylase (debranching amylase) and a mixture for producing a biodegradable molded article using paper sludge, characterized in that further comprising the step of further adding a functional additive selected from the emulsion zone Material manufacturing method. The method of claim 11, Biodegradability using paper sludge, characterized in that further comprising the step of adding a pigment of 1 to 10% by weight relative to the weight of the mixture before stirring the mixture of the first natural material powder and water in the step (S12) Method for producing a mixed material for producing a molded article. The method of claim 12, The pigments are titanium dioxide, zinc oxide, iron oxide, chromium oxide, iron black, cobalt blue, alumina (white), iron oxide, bilidian, zinc sulfide, leader phone, cadmium yellow, cadmium red, chromate salt, molybdate orange , Zinc chromate, strontium chromate, white carbon, clay, talc, ultramarine blue, precipitated barium sulfate, bare light powder, calcium carbonate, light white, ferrocyanide (blue), phosphate (manganese violet), carbon (Carbon Black), Laudermin Lake, Methyl Violet Lake, Kyolin Yellow Lake, Malachite Green Lake, Alizarin Lake, Carmine 6B, Lake Red C, Disazo Yellow, Lake Red 4R, Chromophthal Yellow 3G, Chromophthal Ska Red RN, Nickel Azo Yellow, Permanent Orange HL, Phthalocyanine Blue, Phthalocyanine Green, Flavanthlon Yellow, Geoindigobold, Perinone Orange, Perylene Red, Dioxadine Violet, Kinakrye Biodegradable molded article using paper sludge, characterized in that any one or a mixture of red, isoindolin yellow, naphthol yellow S, pigment green B, lumogen yellow, signal red, alkali blue and anila black Method for producing a mixed material for production. Step of preparing a sheet material by passing the dough resulting from the step (S14) of the method for producing a biodegradable molded article using the papermaking sludge according to any one of claims 1 to 5 through a rolling roll (roll) Method of producing a mixed material for producing a biodegradable molded article using paper sludge, characterized in that further proceeds. The method of claim 14, Drying and drying the sheet material (winding) further comprising the step of proceeding to produce a mixed material for producing a biodegradable molded article using paper sludge. The method of claim 14, For manufacturing biodegradable molded articles using paper sludge, further comprising a coating process for the purpose of imparting at least one selected from the group consisting of water, water repellency, water resistance, oil resistance, heat resistance, and cold resistance. Mixed material manufacturing method. The method of claim 16, The coating agent used in the coating process is sodium silicate, orthosilicate, siloxane, organic polymer dispersed colloidal silica, colloidal silica in film, colloidal silica in fiber, microbial decomposable plastics, calcium carbonate, acryl, polyacrylic In latex, polyurethane, polyethylene, synthetic polymers, hardoxypropylmethyl cellulose, polyethylene glycol, kaolin clay, proralalmine, polyvinyl chloride, polyvinylalcohol, polyvinyl acetate, ceramics, polyesters, biodegradable polyesters and waxes Method of producing a mixed material for producing a biodegradable molded article using paper sludge, characterized in that any one or a mixture of two or more selected. The method of claim 14, Method for producing a biodegradable molded article using a papermaking sludge, characterized in that further comprising the step of forming the manufactured sheet material to produce a molded article. The method of claim 18, For manufacturing biodegradable molded articles using paper sludge, further comprising a coating process for the purpose of imparting at least one selected from the group consisting of water, water repellency, water resistance, oil resistance, heat resistance, and cold resistance. Mixed material manufacturing method. The method of claim 19, The coating agent used in the coating process is sodium silicate, orthosilicate, siloxane, organic polymer dispersed colloidal silica, colloidal silica in film, colloidal silica in fiber, microbial decomposable plastics, calcium carbonate, acryl, polyacrylic In latex, polyurethane, polyethylene, synthetic polymers, hardoxypropylmethyl cellulose, polyethylene glycol, kaolin clay, proralalmine, polyvinyl chloride, polyvinylalcohol, polyvinyl acetate, ceramics, polyesters, biodegradable polyesters and waxes Method of producing a mixed material for producing a biodegradable molded article using paper sludge, characterized in that any one or a mixture of two or more selected.

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