KR960013409B1 - Blackboard sit and manufacturing method thereof - Google Patents
Blackboard sit and manufacturing method thereof Download PDFInfo
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- KR960013409B1 KR960013409B1 KR1019940021055A KR19940021055A KR960013409B1 KR 960013409 B1 KR960013409 B1 KR 960013409B1 KR 1019940021055 A KR1019940021055 A KR 1019940021055A KR 19940021055 A KR19940021055 A KR 19940021055A KR 960013409 B1 KR960013409 B1 KR 960013409B1
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- blackboard
- woven fabric
- magnetic layer
- fabric layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/04—Blackboards
- B43L1/045—Blackboards with magnetic action
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/208—Magnetic, paramagnetic
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Drawing Aids And Blackboards (AREA)
- Laminated Bodies (AREA)
Abstract
Description
제1도는 본 발명의 제조공정에 따른 중간제품의 단면도.1 is a cross-sectional view of an intermediate product according to the manufacturing process of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 대판 2 : 퍼티층1: large plate 2: putty layer
3 : 접착층 4 : 직포층3: adhesive layer 4: woven fabric layer
5 : 양면접착테이프층 6 : 자성층5: double sided adhesive tape layer 6: magnetic layer
7 : 칠판도막층7: blackboard coating layer
본 발명은 다용도 칠판시트 및 이의 제조방법에 관한 것이다.The present invention relates to a multipurpose blackboard sheet and a method of manufacturing the same.
여기에서 다용도 칠판이라 함은 대한민국 실용신안공고 제92-4693호에 기재된 바와 같이 합판 등의 대판에 접착제로 직포를 접착시키고 그 위에 자석이 부착되는 철망, 다공박철판 등으로 된 자성층을 고정 접착시킨 후 칠판 도료를 소정의 방법으로 수회 수평도장, 마감한 칠판으로서, 일반 칠판으로서의 필기 기능외에 종이에 쓴 학습자료 등을 자석으로 칠판면에 부착시키는 기능도 갖는 칠판을 말한다.In this case, the multi-purpose board means a woven fabric bonded to a base plate such as plywood or the like as described in Korean Utility Model Publication No. 92-4693. It is a blackboard that has been horizontally painted and finished several times by a predetermined method in a predetermined manner, and also has a function of attaching learning materials, etc. written on paper to the surface of the blackboard with magnets, in addition to the writing function as a general blackboard.
본 발명은 다용도 칠판의 제작 및 보수에는 물론 일반칠판을 다용도 칠판으로 개체(改替) 전환시키는데 적합한 다용도 칠판시트의 제조방법에 관한 것이다.The present invention relates to a method of manufacturing a multipurpose blackboard sheet suitable for the production and maintenance of a multipurpose blackboard as well as converting a general blackboard into a multipurpose blackboard.
통상 오랫동안 사용한 칠판은 빛의 난반사로 잘 보이지 않을뿐더러, 균열된 틈 사이에 분필 가루가 끼어 글씨가 잘 써지지 않고, 쓰여진 글씨도 선명하게 보이지 아니하는 등 학습효과가 저하되어 칠판 자체를 교체하거나, 보수하여야 한다.In general, blackboards that have been used for a long time are not easily seen due to diffused reflections of light. Also, chalk powder is sandwiched between cracks, so letters are not written well, and written letters are not clearly visible. It must be repaired.
종래의 칠판 보수 방법으로는 기능이 저하된 칠판을 뜯어 공장으로 운반, 칠판면을 원형대로 재생시켜 다시 운반, 설치하는 번거로운 방법이 있으며, 상기에서 설치한 다용도 칠판 판넬을 기존 칠판 위에 접착제로 덧대어 부착시키고 주위를 마감하는 방법도 있고, 일본 문구 전문제조 회사인 고꾸요(KOKUYO)에서 개발 시행하고 있는 첩체흑판(貼替黑板) 역시 5.5m/m의 합판에 스틸판면 또는 법랑판면을 적층 접착하여 만든 판넬을 기존 철팔면에 접착제로 부착마감하는 방법도 있으나 위의 판넬로 만들어 부착하는 방법은 별도의 합판자재가 소요되며 운반, 설치하는 데에도 큰 문제점이 있다.As a conventional method of repairing a blackboard, it is a cumbersome way to remove the degraded blackboard and transport it to the factory, and then recycle and transport the blackboard surface in a circular manner. There is also a method of attaching and finishing the surroundings.The black plate developed by KOKUYO, a Japanese stationery manufacturer, is also laminated with a steel plate or enamel surface on a 5.5m / m plywood. There is also a method of attaching and closing the made panel with an adhesive to the existing iron arm surface, but the method of making and attaching the above panel takes a separate plywood material and there is a big problem in carrying and installing.
또한 일본 실용신안공보 소49-37029호 및 대한민국 실용신안공개 공보 제87-14707호 등에는 연질플라스틱 필름의 일면에 칠판용 도료를 도포하여 도막층을 형성하고 그 이면에 접착층을 형성한 다음 이형지를 접착한 칠판 보수용 시트가 제시되어 있으나 합성수지의 특성상 견고한 도막형성이 어렵고 접착성에 있어서도 문제가 있어 널리 채택 보급되지 못하고 있다.In addition, Japanese Utility Model Publication No. 49-37029 and Korean Utility Model Publication No. 87-14707 apply a paint coating on one side of the flexible plastic film to form a coating layer, and then form an adhesive layer on the back side of the release paper. Bonded blackboard repair sheet is presented, but due to the nature of the synthetic resin is difficult to form a solid coating film and has a problem in the adhesiveness has not been widely adopted.
이상에서 언급된 일반칠판의 보수방법 등은 본 발명에서 목적으로 하는 다용도 칠판의 제조, 보수는 물론 일반 칠판을 기능이 향상된 다용도 칠판으로의 개체 전환 등에 적합한 다용도 칠판시트 또는 이의 제조방법에 원용될 수 없는 것이다. 그 이유로는 다용도 칠판시트는 시트내에 철망 등 자석이 부착되는 자성층이 직포에 칠판도료로 도포, 고착되어 있어 오랫동안 사용하여도 도막에 균열이 발생되지 않고, 거칠게 다루어도 시트에 손상이 가지 않으며 흡수가 잘되는 직포가 설치되어 있어 기존 칠판에 접착이 잘되는 등의 기능과 기술적 구성으로 이루어졌기 때문이다.The above-mentioned repair method of the general blackboard can be used in the multipurpose blackboard sheet or the manufacturing method thereof suitable for manufacturing, repairing the general purpose blackboard of the present invention as well as converting the general blackboard into a multifunctional blackboard having improved functions. It is not there. For this reason, the versatile blackboard sheet has a magnetic layer, such as a wire mesh, attached to the woven fabric, coated with a blackboard paint, so that it does not crack even when used for a long time. It is because it is made of a function and technical configuration, such as a good woven fabric is well adhered to the existing blackboard.
본 발명자는 다용도 칠판을 보수용으로 활용함에 있어 대판에 붙은 칠판시트만을 분리하고자 하였으나 대판에 아무런 처리없이 접착제로 접착시킨 직포는 쉽게 분리되지 않으며 분리시킨 시트의 직포에 대판으로부터 묻어나온 작은 나무조각이 붙어 있어 그대로 시트로 사용하기에는 문제점이 있어 오랫동안 수십차의 실험을 반복한 끝에 본 발명의 목적에 부합되는 즉, 자성층이 일체로 내장된 다용도 칠판시트를 효율적으로 제조할 수 있는 방법을 발명하게 되었다.The present inventor tried to separate only the blackboard sheet attached to the base plate in utilizing the multipurpose blackboard for repair, but the woven fabric bonded with the adhesive without any treatment on the base plate is not easily separated, and a small piece of wood buried from the base plate on the separated sheet fabric There is a problem in that it is used as a sheet as it is, and after a long time dozens of experiments to meet the object of the present invention, that is, to develop a method that can efficiently manufacture a multi-purpose blackboard sheet with a built-in magnetic layer.
이하 본 발명의 칠판시트(도막판)의 제조방법을 공정별로 상술한다.Hereinafter, the manufacturing method of the blackboard sheet (film plate) of the present invention will be described in detail for each process.
제1공정1st process
먼저 약 5m/m 두께의 합판 또는 하드보드 등을 목적하는 칠판 치수로 대판(1)을 만들고 그 위에 퍼티(putty) 또는 탄산칼슘, 아연화 등 무기안료와 건성유를 연육한 도료 등을 일정두께로 균일하게 도장한 다음 완전히 건조시킨 후에 전분 접착제(통상풀)를 묽게하여 바르고 직포를 주름없이 균일하게 부착, 건조시켜 직포층(4)을 형성한다.First, make a large board (1) with the dimensions of the board for the purpose of plywood or hard board with a thickness of about 5 m / m, and uniformly coat paints made with inorganic pigments such as putty, calcium carbonate, and zinc, and dry oil. After coating, it is completely dried, and then starch adhesive (usually paste) is diluted and applied, and the woven fabric is uniformly attached and dried without wrinkles to form a woven fabric layer (4).
제2공정2nd process
먼저 자석이 잘 부착되는 0.3m/m 정도의 철사로 15∼25메쉬로 제망된 철망을 목적하는 칠판크기로 절단하여 그 일면에 적당한 간격으로 양면 접착테이프를 부착한 다음 테이프에 붙어있는 간지를 떼어내고 제1공정에서 얻어진 직포층 위에 수평으로 압착 고정하여 자성층(6)을 형성한다.First, cut a wire mesh of 15 ~ 25 mesh with a wire of 0.3m / m that magnets are attached well to the desired board size, attach double-sided adhesive tape on one side at appropriate intervals, and then peel off the adhesive sheet attached to the tape. The magnetic layer 6 is formed by horizontally compressing and pressing the woven fabric layer obtained in the first step.
제3공정3rd process
제2공정에서 얻어진 자성층(6)상에 통상의 칠판 도료를 수회 수평도장하여 건조, 마감하거나 소부도료를 통상방법으로 도장, 250℃정도에서 소부처리하여 칠판도막층(7)을 형성한다.On the magnetic layer 6 obtained in the second step, the ordinary blackboard paint is horizontally coated several times, dried and finished, or the baking paint is coated by a conventional method and baked at about 250 ° C. to form the blackboard coating layer 7.
제4공정4th process
위에서 얻어진 칠판 판넬에서 대판(1)에 도포된 퍼티층(2)과 직포층(4) 사이를 가벼운 힘으로 원형대로 쉽게 분리하여 목적하는 다용도 칠판시트(도막판)를 얻는다.In the above-mentioned blackboard panel, between the putty layer 2 and the woven fabric layer 4 applied to the base plate 1 are easily separated in a circular shape with light force, thereby obtaining a desired multipurpose blackboard sheet (film plate).
본 발명에서 대판(1)으로는 휨, 틀림 등이 없이 두께의 편차가 적은 두께 5m/m 정도의 합판, 하드보드 등이 사용될 수 있다. 퍼티층(2)은 대판과 시트의 분리를 용이하게 하기 위한 목적과 합판의 두께 편차를 최소화하기 위함이며 퍼티외에 무기질이 많이 함유된 도료로 대용하여도 좋다. 직포층(4)은 흡수가 잘되고 대판으로부터 분리시 보다 원활하게 하기 위하여 약간 촘촘한 것이 좋으며, 크라프트지, 부직포 등도 사용할 수 있으나 박리시 면이 평활치 못한 단점이 있다. 직포층을 붙이는 접착제로는 접착력이 강한 합성제 풀보다는 전분풀을 묽게하여 사용하여야 소기의 목적을 달성할 수 있으며 박리가 원활하다. 양면접착테이프층(5)은 접착력이 강한 폭 50m/m 정도의 접착강도 900g/㎠를 가진 것으로 두루마리로 통용되는 철망을 직포층 위에 부착 고정, 수평을 유지토록 함에 적합하며 철망의 휜 정도에 따라 적당한 간격으로 철망에 붙이고 간지를 떼고 직포층 위에 압착 고정시켜 수평을 유지토록 한다.In the present invention, the base plate 1 may be a plywood, a hard board, or the like having a thickness of about 5 m / m with little variation in thickness without warping or wrong. The putty layer 2 is for the purpose of facilitating the separation of the base plate and the sheet and to minimize the thickness variation of the plywood, and may be substituted with a paint containing a lot of inorganic in addition to the putty. The woven fabric layer 4 is well absorbed and is preferably a little dense in order to be more smoothly separated from the base plate, kraft paper, non-woven fabrics, etc. can be used, but there is a disadvantage that the surface is not smooth when peeling. As the adhesive for attaching the woven fabric layer, the starch paste should be diluted with the adhesive rather than the adhesive paste with strong adhesive strength to achieve the desired purpose, and the peeling is smooth. Double-sided adhesive tape layer (5) has adhesive strength 900g / cm2 with strong adhesive strength and width of 50m / m. It is suitable for attaching and fixing wire mesh, commonly used as a roll, on the woven fabric layer and maintaining it horizontally. Attach it to the wire mesh at appropriate intervals, remove the interleaver, and crimp on the woven layer to keep it horizontal.
자성층(6)으로는 자석이 잘 붙는 다공박철판 또는 철망을 사용하여, 철망 사용시에는 철망은 두루마리로 감겨서 시판되므로 폈을시 활과 같이 큰 원형을 이루어 양면접착테이프를 사용하게 되며 이에 쓰이는 철망은 0.3m/m 정도 굵기의 철사로 15∼25메쉬로 제망된 것이 복원시켜 수평으로 고착하기 쉬우며 자력도 충족되어 적당하다.The magnetic layer 6 uses a perforated sheet metal or wire mesh, which is well attached to the magnet, and when the wire mesh is used, the wire mesh is marketed by rolling a roll, so that the double-sided adhesive tape is formed in a large circle like a bow. It is easy to fix horizontally by restoring the mesh of 15-25 mesh with 0.3m / m thick wire, and the magnetic force is also satisfied.
본 발명에서 사용되는 도료는 일반 공지된 칠판도료를 사용하나 강도가 높은 특수분필 사용 목적으로는 소부도료로 수평도장하고 250℃에서 소부 마감한다.The paint used in the present invention uses a publicly known blackboard paint, but for the purpose of using high-strength special chalk, it is horizontally coated with a baking paint and finishes baking at 250 ° C.
이상와 같은 본 발명의 제조방법상의 특징을 살펴보면 대판을 퍼티 등으로 표면을 수평처리하고 접착력이 비교적 약한 전분풀로 직포를 접착하고 직포층과 칠판도막층 사이에는 자석이 잘 붙는 철망을 내재시켜 전체가 일체로 고화된 시트를 형성함으로써 본 시트는 대판으로부터 원형대로 쉽게 분리되어 소기의 목적에 사용되고 칠판시트 바닥에는 흡수가 잘 되는 직포가 있어 기존 칠판과는 어떤 접착제를 사용해도 견고히 평활하게 접착될 수 있어, 기존 칠판을 견고하고 간편하게 보수할 수 있을 뿐 아니라 일반 칠판에도 다용도 칠판시트를 붙여 다용도 칠판으로 전환시켜 칠판기능을 향상시키는 이점이 있으며, 본 발명품은 두루마리로 운반가능하고 다시 원형복원도 쉬우므로 운반, 취급에도 간편한 장점 등이 있다.Looking at the characteristics of the manufacturing method of the present invention as described above, the surface is horizontally treated with a putty, etc., and the woven fabric is bonded with a starch paste having a relatively weak adhesive force, and the entire mesh is embedded between the woven fabric layer and the blackboard coating layer. By forming a solidified sheet integrally, this sheet can be easily separated from the base plate in a circular shape and used for the intended purpose, and there is a absorbent woven fabric at the bottom of the blackboard sheet so that it can be firmly and smoothly adhered to any existing blackboard. In addition, the existing blackboards can be easily and easily repaired, as well as a general purpose blackboard attached to a versatile blackboard sheet has the advantage of improving the function of the blackboard by converting it to the multi-purpose blackboard, the present invention can be transported as a roll and easy to restore the circle again It is also easy to handle.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940021055A KR960013409B1 (en) | 1994-08-25 | 1994-08-25 | Blackboard sit and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940021055A KR960013409B1 (en) | 1994-08-25 | 1994-08-25 | Blackboard sit and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR960007202A KR960007202A (en) | 1996-03-22 |
| KR960013409B1 true KR960013409B1 (en) | 1996-10-05 |
Family
ID=19391132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019940021055A KR960013409B1 (en) | 1994-08-25 | 1994-08-25 | Blackboard sit and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR960013409B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102481978B1 (en) | 2021-11-16 | 2022-12-26 | 용석천 | Blackboard Sheet Paper Manufacturing System |
-
1994
- 1994-08-25 KR KR1019940021055A patent/KR960013409B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR960007202A (en) | 1996-03-22 |
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