KR101184438B1 - Fiber board slate and manufacturing apparatus thereof - Google Patents

Fiber board slate and manufacturing apparatus thereof Download PDF

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Publication number
KR101184438B1
KR101184438B1 KR1020100065283A KR20100065283A KR101184438B1 KR 101184438 B1 KR101184438 B1 KR 101184438B1 KR 1020100065283 A KR1020100065283 A KR 1020100065283A KR 20100065283 A KR20100065283 A KR 20100065283A KR 101184438 B1 KR101184438 B1 KR 101184438B1
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South Korea
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fiber
felt
plywood
slate
regenerated
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KR1020100065283A
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Korean (ko)
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KR20120004665A (en
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김홍근
주용수
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주용수
현대산업트라이던트(주)
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Abstract

According to the present invention, with respect to 100 parts by weight of the first regenerated synthetic fiber containing any one or a mixture of polyethylene (PE) and polypropylene (PP), nylon fibers, acrylic fibers, polycarbonate (PC), poly A sorter configured to mix 180 to 190 parts by weight of a second regenerated synthetic fiber including at least one of vinyl chloride (PVC) and polystyrene (PS) to form waste synthetic fibers; A cutter for cutting the configured waste synthetic fiber to a predetermined size; A masking machine for masking the cut waste fiber with felt; A punching machine for punching with overlap felt by overlapping a plurality of sheets of the felt with one sheet; A heater for heating the punched overlap felt to 250 ° C. to melt a raw material having a low melting point among the second regenerated synthetic fibers; A heating pressure roller for forming the heated overlap felt into a fiber plywood which is heated / compressed at a temperature of 200 ° C. and 300 Kg / cm 2; A cooling roller for cooling the heated / compressed fiber plywood at a temperature of 14 ° C .; A forming roller which presses the cooled fiber plywood to 500 Kg / cm 2 to form a fiber plywood slate having a thickness of 3 mm to 5 mm; And a cutter for cutting the fibrous plywood slats to a predetermined size.

Description

Fiber board slate and manufacturing apparatus thereof

The present invention relates to a fiber plywood slate and a manufacturing apparatus thereof, and more particularly, to recycle waste synthetic fibers discarded after use of clothing or woven fabric into slate to reduce the processing cost of waste synthetic fibers treated as waste and recycle resources. The present invention relates to a fiber plywood slate capable of improving resource utilization rate and simplifying a manufacturing process to improve productivity.

Currently used slats are asbestos slate produced mainly from asbestos and cement. As the insulation and heat insulation are relatively low, the outdoor temperature is transferred to the room through the slate, so the indoor temperature increases in summer and the indoor temperature in winter. The lower the cooling / heating efficiency is lowered by this, the operating time of the cooling / heating equipment is increased, the use of energy, the situation is causing economic losses.

In addition, asbestos slate simply uses asbestos and cement as a main raw material, so it is easily damaged due to its weak durability, and is easily damaged even if a slight impact is applied during storage and transportation of the completed slat, and in particular, when installing the slate. When a shock due to careless handling is applied, it is easily broken and causes a lot of economic losses.

Therefore, in order to solve the above problems, according to the patent application No. 10-1997-5711 'method for producing new material slate regenerated fiber waste', waste synthetic fibers are collected, cut into pieces and processed on the other side After applying both sides of the thermosetting resin as a binder selectively and drying it to have a constant water content, it is cut according to the use and heated by pressing through a heating pressure press, injection molding, and then rapidly cooled through a cooling press to cut the product according to the product dimensions I'm trying to.

However, the conventional slate and the slate manufacturing method as described above, because a separate binder is applied to both sides of the other side to improve the bonding strength of the other side of the tongue, the cost of the application of the binder is complicated and the manufacturing process for it is also complicated. There is this.

In addition, since the other surface snow coated with the binder is forcibly injection-molded in a high pressure state through a heating press, the weight ratio of polyethylene (PE) or polypropylene (PP) which is the main component of the other snow surface is not constant. When the polyethylene (PE) or polypropylene (PP) does not have or exceeds a certain weight ratio, the tissues are cracked or distorted, respectively, so that the injection molding is not performed smoothly. have.

Therefore, an object of the present invention is to improve the bonding strength of the other side tongues without applying a separate binder to the other side of the waste synthetic fiber fiber plywood slate and its manufacturing apparatus that can improve the productivity and manufacturing cost according to the simplified manufacturing process To provide.

In addition, another object of the present invention is to at least one of nylon-based fiber, acrylic fiber, polycarbonate, polyvinyl chloride and polystyrene, wherein polyethylene or polopropylene, which is the first regenerated synthetic fiber of the other side, is the second regenerated synthetic fiber. After having a certain weight part, the fiber is prevented from being distorted or cracked by the compression of the heating pressure roller method, rather than the injection method by the pressurized heat press. It is to provide a plywood slate and its manufacturing apparatus.

Meanwhile, the object of the present invention is not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

To this end, according to the present invention, with respect to 100 parts by weight of the first regenerated synthetic fiber including any one or a mixture of polyethylene (PE) and polypropylene (PP), nylon-based fibers, acrylic fibers, polycarbonate (PC A separator for mixing waste synthetic fibers by mixing 180 to 190 parts by weight of a second regenerated synthetic fiber including at least one of polyvinyl chloride (PVC) and polystyrene (PS); A cutter for cutting the configured waste synthetic fiber to a predetermined size; A masking machine for masking the cut waste fiber with felt; A punching machine for punching with overlap felt by overlapping a plurality of sheets of the felt with one sheet; A heater for heating the punched overlap felt to 250 ° C. to melt a raw material having a low melting point among the second regenerated synthetic fibers; A heating pressure roller for forming the heated overlap felt into a fiber plywood which is heated / compressed at a temperature of 200 ° C. and 300 Kg / cm 2; A cooling roller for cooling the heated / compressed fiber plywood at a temperature of 14 ° C .; A forming roller which presses the cooled fiber plywood to 500 Kg / cm 2 to form a fiber plywood slate having a thickness of 3 mm to 5 mm; And a cutter for cutting the fibrous plywood slats to a predetermined size.

Here, it is preferable that the second regenerated synthetic fiber has 186 parts by weight based on 100 parts by weight of the first regenerated synthetic fiber.

In addition, when punching the overlap felt, it is preferable that the felt to be located at the top and bottom of the plurality of felt felt to have a state in which the waste synthetic fibers having the same similar color mutually burned with felt.

On the other hand, according to the present invention, there is provided a fiber plywood slate manufactured according to the manufacturing apparatus.

Therefore, according to the present invention, the overlap felt formed by stacking a plurality of felts into one sheet is cooled after being heated / compressed in a state in which raw materials having a low melting point among the second recycled synthetic fibers are melted, thereby the first regeneration of the overlap felt is performed. Polyethylene or polypropylene, which is a fiber, may have an improved binding force by the raw materials to be melted, thereby eliminating the application of a separate binder, thereby simplifying the manufacturing process and reducing costs.

In addition, through the overlap felt having 186 parts by weight of the second regenerated synthetic fibers with respect to 100 parts by weight of the first regenerated synthetic fibers, it is possible to produce a high degree of completeness of the tissue.

In addition, the fiber plywood slate pressurized by the forming roller is not forcibly hard pressed by the press but soft-compressed as it passes through the mold through the conveyor, so that the fiber plywood does not break even under strong pressure and thus uniform strength. It can have and the completeness of the product can be improved.

On the other hand, the effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view showing a fiber plywood slate according to a preferred embodiment of the present invention;
Figure 2 is a process diagram schematically showing the process of the manufacturing apparatus for manufacturing the fiber plywood slate of Figure 1; And
Figure 3 is a process flow diagram showing a manufacturing method of a manufacturing apparatus for producing a fiber plywood slate according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a fiber plywood slate according to a preferred embodiment of the present invention, Figure 2 is a process diagram schematically showing the process of the manufacturing apparatus for manufacturing the fiber plywood slate of FIG.

As shown in Figures 1 and 2, in the fiber laminate slate (S) according to a preferred embodiment of the present invention, the collected waste synthetic fibers in the polyethylene (PE) and polypropylene (PP) by the sorter 10 With respect to 100 parts by weight of the first regenerated synthetic fiber including any one or a mixture of two, at least one of nylon-based fibers, acrylic fibers, polycarbonate (PC), polyvinyl chloride (PVC) and polystyrene (PS) 180 to 190 parts by weight of the second regenerated synthetic fibers are mixed to form waste synthetic fibers, and then the constructed waste synthetic fibers are cut to a predetermined size by the cutter 20, and the cut waste synthetic fibers are placed on the other side machine 30. After the surface is burnt with a felt (Felt) that is completely loosened, the other felt is punched by an overlap felt overlapping a plurality of sheets into one sheet by a punching machine 40, and the punched overlap felt is heated by a heater 50. 250 And the raw material having a low melting point in the second regenerated synthetic fiber is melted, and then the heated overlap felt is heated / compressed by a heating pressure roller 60 at a temperature of 200 ° C. and 300 Kg / cm 2. After the heating / compressed fiber plywood is cooled by a cooling roller 70 at a temperature of 14 ° C., the cooled fiber plywood is pressed by 500 Kg / cm2 by the forming roller 80 to 3 mm. After molding to a fiber plywood slate (S) having a thickness of about 5 mm, the fiber plywood slate (S) is cut into a predetermined size by the cutter 90 is produced.

Here, it is preferable that the manufacturing apparatus for manufacturing the fiber plywood slate (S) further includes a controller (C) for controlling the components in addition to the components.

In the manufacturing apparatus for producing a fiber plywood slate according to a preferred embodiment of the present invention, any one of polyethylene (PE) and polypropylene (PP) which is the first regenerated synthetic fibers of the waste synthetic fibers screened by the sorter 10 The weight part of the mixture of one or two is 100 and the weight part of the second regenerated synthetic fiber to the first regenerated synthetic fiber is 180 to 190, which means that the weight ratio of the second regenerated synthetic fiber is not in the range of 180 to 190. In this case, the structure of the fibrous plywood is cracked, and thus the completeness of the product is not high. On the contrary, even when the weight ratio of the second regenerated synthetic fiber exceeds the range of 180 to 190, the fibrous plywood is disturbed so that the product is not high. For smooth molding of the plywood, the weight part of the second regenerated synthetic fiber relative to 100 parts by weight of the first regenerated synthetic fiber in the waste synthetic fiber is 180 to It is preferable that it is 190, and more preferably the weight part of the second regenerated synthetic fiber is 186 with respect to 100 parts by weight of the first regenerated synthetic fiber of the waste synthetic fibers.

That is, polyethylene (PE) or polypropylene having a melting point such as nylon-based fiber, acrylic fiber, polycarbonate (PC), polyvinyl chloride (PVC), polystyrene (PS) and the like as the second regenerated synthetic fiber is the first regenerated synthetic fiber. Since it is lower than the melting point of (PP), most of the second regenerated synthetic fibers melt when heated to 200 ° C. or higher.

Therefore, when the second regenerated synthetic fiber does not fall within the range of the weight part (180 to 190 with respect to 100 parts by weight of the first regenerated synthetic fiber) of the second regenerated synthetic fiber Since the melting part is not enough to bind the first regenerated synthetic fibers, the first regenerated synthetic fibers are not smoothly bonded and the tissue of the fiber plywood is disturbed.

Further, when the second regenerated synthetic fiber exceeds the range of the weight part (180 to 190 with respect to 100 parts by weight of the first regenerated synthetic fiber), the second regenerated synthetic fiber compared to the weight part of the first regenerated synthetic fiber Since the melting weight of s far exceeds the extent to which the first regenerated synthetic fiber is bound, the first regenerated synthetic fiber is bound by an excessive amount of the binding component and the tissues of the fiber plywood are split.

As described above, when the weight ratio of the second regenerated synthetic fiber does not fall within the range of 180 to 190 with respect to 100 parts by weight of the first regenerated synthetic fiber, the fiber plywood is produced only if it exceeds this and corresponding to the range or Comparing the performance analysis of the fiber plywood slate (S) is shown in the following table.

Component Analysis Comparison Table 1 Item Name The weight part of the second recycled synthetic fiber is less than the range The weight part of the second recycled synthetic fiber exceeds the range The weight part of the second recycled synthetic fiber is within the range importance 1.31 1.01 1.12 Tensile strength (kgf / cm2) 230 203 245 Flexural Strength (kgf / ㎠) 3.3 2.3 3.55 Flexural strength deformation (mm) 18 17 15.7 Fall impact test Some cracks occur Full crack clear

As shown in the above table, the weight ratio of the second regenerated synthetic fiber has a range of 180 to 190 with respect to 100 parts by weight of the first regenerated synthetic fiber than the tensile strength, the flexural strength, the bending strength deformation amount, and the fall. It can be seen that the impact test has better performance. Therefore, for smooth molding of the fiber plywood, the weight part of the second regenerated synthetic fiber is preferably 180 to 190 with respect to 100 parts by weight of the first regenerated synthetic fiber among the waste synthetic fibers.

In addition, the waste synthetic fibers to be cut to a certain size by the cutter 20, it is preferable to have a size of about 5 cm in width, 5 cm in length.

In addition, the felt (Felt) formed by the waste synthetic fiber is burned by the other surface machine 30, preferably has a thickness of about 3 mm to 5 mm.

In addition, it is preferable that the overlap felt formed by overlapping a plurality of felts into one sheet by the punching machine 40 is punched after 5 to 7 sheets of felt are stacked, and the overlap felt is used for the punching operation. Air is removed, and the thickness thereof becomes thinner. Here, the work of overlapping the plurality of felt sheets into one sheet is preferably performed by the front face machine.

In addition, the fiber plywood formed by the heater 50 and the heating pressure roller 60 and cooled by the cooling roller 70 may be formed by melting raw materials having a melting point lower than 250 ° C. in the regenerated synthetic fiber. After the heating / compression at a temperature of 200 ° C. and 300 Kg / cm 2 in the state, and rapidly cooling at a temperature of 14 ° C., polyethylene (PE) and polypropylene (PP), which are the first regenerated synthetic fibers of the overlapped felt, are It can have improved binding force by the raw materials to be melted, there is no need to apply a separate binder can simplify the manufacturing process and reduce the cost. Here, a spreading device may be further provided to spread the overlap felt to the heater 50 before supplying the overlap felt punched by the puncher 40 to the heater 50, and the heater 50. Loading device for automatically loading the overlap felt heated by the heating roller (60) may be further provided.

In addition, the fiber plywood slate (S) that is pressed by the molding roller 80 is molded, the cooled fiber plywood is pressed to 500 Kg / ㎠ and molded into a shape having acid and valleys, the fiber plywood is Likewise, since the compression molding is performed by passing through the mold through the conveyor, rather than being forcibly injection molded, the fiber plywood may have a uniform strength because it is not damaged even at a high pressure, and the completeness of the product may be improved.

In addition, the fiber board slate (S) by the cutter 90, the outer peripheral surface is pushed out due to the pressing of the molding roller 80 during molding is removed to have a clean state.

Therefore, according to the fiber laminate slate (S) as described above, the overlap felt formed by stacking a plurality of felt sheets into one sheet, the temperature of 200 ℃ and 300 in the state that the melting point of the second regenerated synthetic fiber is lower than 250 ℃ raw materials are melted Since it is rapidly cooled at a temperature of 14 ° C. after being heated / compressed in a Kg / cm 2 state, the first regenerated synthetic fiber of polyethylene (PE) or polypropylene (PP), which is the overlapping felt, is improved in bonding strength by the raw materials to be melted. It can have a separate binder does not need to be applied can simplify the manufacturing process and reduce the cost.

In addition, since the fiber laminate slate (S) pressurized by the forming roller 80 is not forcibly hard pressed by the press but soft-compressed by passing through the mold through the conveyor, the fiber laminate is subjected to a strong pressure. It does not break even because it can have a uniform strength and can improve the completeness of the product.

Hereinafter, a method of manufacturing a slate by the apparatus for producing a fiber laminate slate according to a preferred embodiment of the present invention will be described.

Figure 3 is a process flow diagram showing a manufacturing method of a manufacturing apparatus for producing a fiber plywood slate according to a preferred embodiment of the present invention.

As shown in Figure 3, the method for producing a slate (S) according to the fiber plywood slate manufacturing apparatus according to a preferred embodiment of the present invention, first, the collected waste synthetic fibers to the waste synthetic fibers by the sorter 10 Here, the waste synthetic fibers, nylon-based fibers, acrylic fibers, poly with respect to 100 parts by weight of the first recycled synthetic fiber comprising any one or a mixture of polyethylene (PE) and polypropylene (PP) 180 to 190 parts by weight of the second regenerated synthetic fiber composed of carbonate (PC), polyvinyl chloride (PVC), polystyrene (PS), and the like are mixed (S100).

Thereafter, the waste synthetic fiber configured as described above is cut into a predetermined size by the cutter 20 (S110), and the cut waste fiber is burned with felt (Felt) which is completely unwound by the other cotton machine 30 ( S120), the other felt is punched by an overlap felt overlapping a plurality of sheets into one sheet by the punching machine 40 (S130).

Here, in the punching of the overlap felt in which the plurality of felt sheets overlapped with one sheet in the S130 step, the felts to be positioned above and below the plurality of felt felts have the same color as each other in the selection process of the S35 step. It is desirable to omit a separate painting work by having a state in which the felt is burned, thereby simplifying the manufacturing process, saving costs, and can eliminate the aversion to waste synthetic fibers.

Subsequently, the punched overlap felt is heated to 250 ° C. by the heater 50 to melt the raw material having a low melting point among the second regenerated synthetic fibers (S140), and the heated overlap felt is heated to the pressure roller 60. By the temperature of 200 ℃ and 300 Kg / ㎠ state that is formed of a fiber plywood is heated / compressed (S150), the heated / compressed fiber plywood is cooled by a cooling roller 70 at a temperature of 14 ℃ (S160 ).

Then, the cooled fiber plywood is pressurized by 500 Kg / ㎠ by the molding roller 80 is molded into a fiber plywood slate (S) having a thickness of 3 mm to 5 mm (S170), the fiber plywood slate (S ) Is cut to a certain size by the cutter 90 (180).

Therefore, according to the method of manufacturing the fiber laminate slate as described above, the overlap felt formed by stacking a plurality of felt sheets into one sheet has a temperature of 200 ° C. and 300 in a state in which raw materials having a melting point lower than 250 ° C. of the second regenerated synthetic fiber are melted. Since it is rapidly cooled at a temperature of 14 ° C. after being heated / compressed in the Kg / cm 2 state, the first regenerated synthetic fibers of the overlap felt polyethylene (PE) and polypropylene (PP) are improved in binding strength by the raw materials to be melted. It can have a separate binder does not need to be applied can simplify the manufacturing process and reduce the cost.

In addition, since the fiber laminate slate (S) pressurized by the forming roller 80 is not forcibly hard pressed by the press but soft-compressed by passing through the mold through the conveyor, the fiber laminate is subjected to a strong pressure. It does not break even because it can have a uniform strength and can improve the completeness of the product.

On the other hand, as described above, when the waste synthetic fibers have 100 parts by weight of the first regenerated synthetic fibers and 180 to 190 parts by weight of the second regenerated synthetic fibers relative to the first regenerated synthetic fibers, and the patent The performance analysis of the slates according to the application method of 'No. 10-1997-5711' new material slate manufacturing process regenerated fiber waste 'is as follows.

Component Analysis Comparison Table 2 Item Name According to the invention
Synthetic Fiber Slate Patent Application No. 10-1997-5711
New Material Slate Reference value importance 1.12 1.01 0.95 or more Tensile strength (kgf / cm2) 245 203 More than 120 Flexural Strength (kgf / ㎠) 3.55 2.3 2.0 or higher Flexural strength deformation (mm) 15.7 17 15.5 or less Fall impact test clear Some cracking or cracking Free from cracks, cracks and harm in use

As shown in the above table, the synthetic fiber slate (S) according to a preferred embodiment of the present invention with respect to the slate of the conventional patent application No. 10-1997-5711, the waste synthetic fibers 100 weight of the first regenerated synthetic fibers By having the portion and the 180 to 190 parts by weight of the second regenerated synthetic fibers relative to the first regenerated synthetic fibers, it can be confirmed that the product is high in completeness and excellent in all performance. That is, through the waste synthetic fibers having 100 parts by weight of polyethylene (PE) and polypropylene (PP) as the first regenerated synthetic fiber and 180 to 190 parts by weight of the second regenerated synthetic fiber to the first regenerated synthetic fiber, As in the related art, a slat having improved durability and the like can be manufactured without adding a separate binder.

Therefore, as described above, by recycling the waste fibers treated as waste to produce a fiber plywood slate, it is possible to have an environmental improvement effect and an economic effect according to resource recycling.

While the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains have various permutations and modifications without departing from the spirit or essential features of the present invention. It is to be understood that the present invention may be practiced in other specific forms, as modifications are possible. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

Claims (6)

delete delete Nylon fiber, acrylic fiber, polycarbonate (PC), polyvinyl chloride (PVC) based on 100 parts by weight of the first regenerated synthetic fiber containing any one or a mixture of polyethylene (PE) and polypropylene (PP) And a sorter 10 configured to form waste synthetic fibers by mixing 180 to 190 parts by weight of the second regenerated synthetic fiber including at least one of polystyrene (PS).
A cutter 20 for cutting the configured waste synthetic fiber to a predetermined size;
A cotton other machine 30 for burning the cut waste fiber with felt;
A punching machine 40 for punching the overlap felt by overlapping a plurality of sheets of the other felt into one sheet;
A heater 50 for heating the punched overlap felt to 250 ° C. to melt a raw material having a low melting point among the second regenerated synthetic fibers;
A heating pressure roller 60 for forming the heated overlap felt into a fiber plywood that is heated / compressed at a temperature of 200 ° C. and 300 Kg / cm 2;
A cooling roller 70 for cooling the heated / compressed fiber plywood at a temperature of 14 ° C .;
Forming roller 80 for pressing the cooled fiber plywood to the fiber plywood slate (S) having a thickness of 3 mm to 5 mm by pressing at 500 Kg / ㎠; And
Fiber plywood slate manufacturing apparatus comprising a cutter (90) for cutting the fiber plywood slate (S) to a predetermined size. The method of claim 3, wherein the second regenerated synthetic fiber,
Apparatus for producing a fiber plywood slate, characterized in that having 186 parts by weight based on 100 parts by weight of the first regenerated synthetic fibers. The method of claim 3 wherein the punching of the overlap felt,
Felt to be located at the top and bottom of the plurality of felt felt fiber composite slate manufacturing apparatus characterized in that the waste synthetic fibers having the same similar color to each other to have a state in which the felt. A fibrous plywood slate prepared according to any one of claims 3 to 5 of the fibrous plywood slate manufacturing apparatus.
KR1020100065283A 2010-07-07 2010-07-07 Fiber board slate and manufacturing apparatus thereof KR101184438B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170114682A (en) * 2016-04-06 2017-10-16 이원식 Eco-friendly fiberboard manufacturing apparatus, the clothes, the main ingredient
KR101886411B1 (en) * 2017-10-17 2018-08-09 (주)세진플러스 Functionality pannel using waste fiber and manufacturing method of the same
KR20180109165A (en) * 2017-03-27 2018-10-08 김재원 Slate manufacturing device using disused fibre

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101673119B1 (en) 2016-07-29 2016-11-04 주식회사 세연 Method for manufacturing partition panel and round type partition using the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170114682A (en) * 2016-04-06 2017-10-16 이원식 Eco-friendly fiberboard manufacturing apparatus, the clothes, the main ingredient
KR101934617B1 (en) * 2016-04-06 2019-01-02 이원식 Eco-friendly fiberboard manufacturing apparatus, the clothes, the main ingredient
KR20180109165A (en) * 2017-03-27 2018-10-08 김재원 Slate manufacturing device using disused fibre
KR101982241B1 (en) * 2017-03-27 2019-05-24 김재원 Slate manufacturing device using disused fibre
KR101886411B1 (en) * 2017-10-17 2018-08-09 (주)세진플러스 Functionality pannel using waste fiber and manufacturing method of the same

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