WO2000007171A1 - Tableau d'affichage magnetique et son procede de production - Google Patents
Tableau d'affichage magnetique et son procede de production Download PDFInfo
- Publication number
- WO2000007171A1 WO2000007171A1 PCT/JP1999/004125 JP9904125W WO0007171A1 WO 2000007171 A1 WO2000007171 A1 WO 2000007171A1 JP 9904125 W JP9904125 W JP 9904125W WO 0007171 A1 WO0007171 A1 WO 0007171A1
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- WO
- WIPO (PCT)
- Prior art keywords
- core
- display panel
- adhesive
- magnetic display
- face plate
- Prior art date
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/37—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/37—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements
- G09F9/375—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being movable elements the position of the elements being controlled by the application of a magnetic field
Definitions
- the present invention relates to a magnetic display panel mainly used for drawing by infants and a method of manufacturing the same, and more particularly to an improved structure obtained by combining a core block and a material for a member for sealing the core block from both sides. And a method for manufacturing the same.
- a honeycomb core having a large number of hexagonal cells is sealed between a transparent or translucent drawing surface plate (substrate) and a facing material, and each of the above cells is sealed.
- the tip of a magnetic pen may strike or strike the magnetic plate board strongly.
- the drawing surface may be broken by the impact of the magnetic ben, or the wall of the honeycomb core made of synthetic resin may be deformed and the adhesion between the drawing surface and the honeycomb core may be broken.
- the liquid in the cell may leak out and stain the clothing, accidentally swallow it, swallow it, or see it. Washing is more troublesome because the plastic dispersion liquid attached to clothes is difficult to drop, but the dispersion liquid contains metallic magnetic particles. May injure and, if it enters the eyes, unknowingly rub the eyes and damage the surface of the eyes. Also, if the damaged part of the drawing surface has sharp corners May injure body such as hands and arms. Since most magnetic display panels are intended for use by infants, thorough measures are required for the safety of internal organs and the body.
- the plastic dispersion liquid 21 itself is an emulsion, the minute bubbles 25 remain in the dispersion liquid.
- the magnetic display panel is used with the partition wall 23 of the adjacent cell 20 torn, if the magnetic pen is slid over both cells 20, the internal pressure will increase when the pen pressure is applied to both cells 20.
- the plastic dispersed liquid inside the adjacent cell 20 comes in and out by moving the magnetic plate strongly, and as shown in Fig. 12B, the plastic dispersed liquid 21 in both cells 20
- the small bubbles 25 existing in the stream collide and gather in the flow, so they gradually become larger.
- the bubble 25 grows and grows, it rises above the plastic dispersion liquid 21 and adheres to the back side of the drawing surface 22.
- the substrate, the drawing surface, and the honeycomb core are all made of vinyl chloride as described above, static electricity is easily generated. Especially in winter when the air dries, static electricity tends to be charged. When static electricity is charged, the magnetic particles are attracted to the substrate or drawing surface plate, and the magnetic force of the magnetic ben makes it difficult for the magnetic particles to flow, so that the drawn lines do not have uneven brightness, and the lines themselves do not appear. Or For this reason, the eraser had to be moved to the left and right before use to make it easy for the magnetic particles to flow, and handling was troublesome.
- the honeycomb core made of vinyl chloride the end face of each cell is relatively thick, and the honeycomb shape appears on the drawing surface due to reflection of external light. This not only reduced the drawing area, but also impaired free drawing.
- the plastic dispersion liquid containing the magnetic particles is filled in each cell of the honeycomb core by bonding both end faces of the opening of the honeycomb core to the substrate and the face material.
- the substrate, the face material, and the honeycomb core are all made of vinyl chloride, and the thermoplastic core is used to heat the honeycomb core to its softening point, and then the opening end face of each cell of the honeycomb core is melted ( Crushing) and bonding the substrate and the face material.
- the heating temperature is too high, the honeycomb core itself softens and its rigidity deteriorates, so that the drawing surface is also deformed.
- the drawing substrate and the surface material themselves are also easily deformed by the heating temperature.
- the heating temperature is low, poor adhesion is likely to occur.
- the substrate or surface material is deformed unevenly, not only will the productability be impaired, but also the magnetic pen will not slide smoothly, making it difficult to draw and poor operability.
- the cells adjacent to each other at the bonding failure portion communicate with each other.
- the present invention solves the above problems and, in view of the fact that this type of magnetic display panel is used only by infants, is safe and harmful to infants. It was established with the primary purpose of reducing the danger that the drawing surface would be damaged even if an infant strongly hits the drawing surface of the magnetic drawing board with the tip of the magnetic pen, or the drawing surface and the honeycomb core Hardly breaks the adhesive, secures the safety of the infant's body, displays clear lines at all times, and does not cause pollution when unnecessary It is an object of the present invention to provide a magnetic display panel that can be disposed of safely as described above.
- the present invention provides a magnetic display that not only does not pollute the environment even after disposal but also does not harm the health, in addition to facilitating temperature control and improving production efficiency. It is an object to provide a method for manufacturing a panel. Disclosure of the invention
- a magnetic display panel comprises: a plastic storage liquid containing magnetic particles, between a core housing body having a raised peripheral portion and a concave portion formed inside, and a face plate covering the concave portion.
- the core block having a large number of cells enclosed therein is sealed with an adhesive, and the core housing and the face plate are each made of a olefin-based synthetic resin. Is made transparent or translucent, and the core block is made of pulp raw paper.
- the core block may be made of glassine paper, and the core block may be made of patch paper.
- the core housing may be made of a material selected from polyethylene, polyethylene terephthalate, and polypropylene.
- the adhesive may be selected from vinyl acetate resin, acrylic resin, and UV curable adhesive.
- the upper end of the concave portion of the core housing is slightly higher than the upper end of the honeycomb core.
- the difference between the height of the concave portion of the core housing and the upper end of the honeycomb core is preferably larger than 0 and 0.1 mm or less.
- the method of manufacturing a magnetic display panel according to the present invention includes a method of manufacturing an orifice synthetic resin.
- a concave portion is formed inside by raising the peripheral portion of the core housing, and a paper core block having a large number of independent cells is arranged in the concave portion, and the core block and the concave portion are bonded with an adhesive.
- the core block is filled with a plastic dispersion liquid containing magnetic particles, and an adhesive is provided on the back side of the synthetic resin-made face plate provided on the opposite side of the core housing and the core block. Is applied, and this is adhered to the opening surface of the core block to enclose the plastic dispersion liquid in each cell.
- the adhesive is preferably a room-temperature-curable adhesive or an ultraviolet-curable adhesive.
- the core block is preferably a honeycomb core.
- the face plate when the face plate is bonded to the opening surface of the core block, the face plate is moved along the opening surface while being pressed against the opening surface of the core block by an appropriate means, or the face plate is bonded by an appropriate pressing means. It is recommended that the core be pressed against the opening surface of the core block and adhered.
- FIG. 1 is a perspective view of an embodiment of a magnetic display panel according to the present invention as viewed from the back side.
- FIG. 2 is a cross-sectional view of the magnetic display panel of FIG.
- FIG. 3 is an exploded perspective view of the magnetic display panel of FIG.
- FIG. 4A to FIG. 4C are explanatory diagrams showing the manner of manufacturing the honeycomb core.
- FIG. 5A and FIG. 5B are explanatory views showing a production mode of another example of the honeycomb core.
- 6A to 6E are explanatory diagrams showing the manner of enclosing the plastic dispersion liquid.
- FIG. 7 is an explanatory diagram showing another example of the mode of bonding the face plate to the honeycomb core.
- FIG. 8 is a longitudinal sectional view showing another example of the core housing.
- FIG. 9A and FIG. 9B are explanatory views showing another example of the mode of enclosing the plastic dispersion liquid.
- FIG. 10 is an explanatory view showing still another example of the mode of enclosing the plastic dispersion liquid.
- FIG. 11A, FIG. 11B and FIG. 11C are plan views each showing another example of the core block.
- FIG. 12A and FIG. 12B are explanatory diagrams showing a mode of bubble growth when the cells of the honeycomb core communicate with each other.
- FIG. 1 is a perspective view of a magnetic display panel 1 according to the present invention
- FIG. 2 is a cross-sectional view thereof
- FIG. 3 is an exploded perspective view of the magnetic display panel 1.
- the magnetic display panel 1 includes a face plate 2 and a core housing 3.
- the honeycomb core 5 is hermetically sealed as a core block having a number of cells 4 therebetween, and a plastic dispersion liquid 7 containing magnetic particles is sealed in each cell 4 of the honeycomb core 5.
- a tip of a magnetic pen (not shown) is brought into contact with a drawing surface (the surface of the core housing 3), or an eraser bar provided with a magnet or the like slidably disposed on the back side of the face plate 2.
- a magnetic field is applied to the plastic dispersion liquid 7 so that the magnetic particles float on the drawing surface or settle away from the drawing surface to display pictures and characters on the drawing screen. Or it can be erased.
- the core housing 3 constitutes a drawing surface, and is made of a transparent or translucent olefin-based synthetic resin, for example, a polyethylene-based synthetic resin such as polyethylene terephthalate (PET) or a polypropylene-based synthetic resin such as polypropylene. As shown in FIGS. 2 and 3, the peripheral edge 3a of the core housing 3 is raised to form a recess 8 inside. Such a shape can be obtained by ordinary vacuum molding. It is preferable that the core housing 3 is usually made of a material selected from polyethylene, polyethylene terephthalate, polypropylene, and polybutene.
- the honeycomb core 5 has a honeycomb structure having many independent cells 4 and is a water-resistant and oil-resistant paper member.
- glassine paper for example, Oji Paper's “Glasin”
- Glassine paper is made from carefully selected pulp and is characterized by high transparency.
- 30 ⁇ which is half the thickness (about 60 6m) of the conventional honeycomb core made of vinyl chloride!
- the thickness can be about 40 / m.
- Other features include high resistance to oils and fats, and exceptionally high strength and tensile strength.
- Glassine paper having a basis weight in the range of 25 to 50 g / m 2 is suitable. The reason is that if it is 25 g / m 2 or less, the thickness becomes 25 ⁇ m or less, and the overall strength is insufficient.If it is 50 g / m 2 or more, the strength is sufficient, but the transparency is low. Drop, thickness However, there is a disadvantage that it appears on the drawing surface because Perfect What is 35. 5 ⁇ 2. 0 ⁇ 4 1. 0 ⁇ 2. O g / m 2.
- Table 1 shows the physical properties of glassine paper.
- parchment paper having similar characteristics may be used.
- those having a basis weight of 30.0 to 60.0 g / m 2 are suitable, but those having a basis weight of 35.0 to 45.0 g / m 2 are optimal.
- an adhesive 11 is applied to the front and back surfaces of each of a large number of strips of paper 9 at regular intervals, and these are applied in the same manner as in FIG. 4B.
- the whole is forward and backward of the paper 9 as shown in Fig. 4C. It can be obtained by pulling it out and expanding it.
- the adhesive 11 is, for example, a mixture of 49 to 51% of ethyl acetate and 49 to 51% of polyethylene resin as a main component, and 75% of polyisocyanate prepolymer.
- a mixture of ethyl acetate is used as a curing agent, and a two-liquid mixture type in which 10 parts of a curing agent is blended with 100 parts of a main agent may be used.
- the adhesive 11 is applied to the front and back surfaces of a large number of paper sheets 10 at regular intervals alternately in a strip shape, and these are applied as shown in FIG. 5B.
- the two paper sheets 10a of the same size are sandwiched between 10a and polymerized, and the paper sheets 10a and 10a superposed by heating, pressing, etc. are bonded together, and then bonded as shown in Fig. 5B. It can also be obtained by cutting like a line P with a predetermined width in a direction orthogonal to the application direction of the agent as shown by a line P, and pulling out the cut one in the same direction as described above to expand it. Of course, other configurations may be used.
- each cell 4 of the honeycomb core 5 is preferably such that its maximum width is inscribed in a circle having a maximum width of 2.0 to 8.0 mm. It is technically difficult to form a paper with a maximum width of 2.0 mm or less from paper, and it is not necessary to have a fine drawing for infants. It becomes too large to control the rise and settling of all the magnetic particles in the cell 4, which may cause unevenness in drawing.
- the optimum value is 3.0 to 4.0 mm. Since the thickness of the honeycomb core 5 is related to the height of the concave portion 8 of the core housing 3, it will be described later.
- the upper end of the recess 8 of the core housing 3 may be formed so as to be the same as the upper end of the honeycomb core 5, but the upper end of the recess 8 of the core housing 3 is formed for the reason described later.
- the honeycomb core 5 is formed to be slightly higher than the upper end by the difference d (described later).
- the face plate 2 is also made of a synthetic resin. If face plate 2 is to be the drawing surface, make it transparent or translucent.
- honeycomb core 5 The open end faces of the front and back of the honeycomb core 5 are adhered to the core housing 3 and the back surface of the face plate 2, whereby the honeycomb core 5 is sealed between the core housing 3 and the face plate 2 c. Inside each cell 4 of 5, a milky white plastic dispersion liquid 7 containing magnetic particles is sealed.
- the honeycomb core 5 is housed in the recess 8 of the core housing 3 as shown in FIG. In this case, apply the adhesive 12 to the bottom of the recess 8 and then apply The cam core 5 may be pressed.
- an adhesive suitable for bonding the olefin synthetic resin and paper can be used as the adhesive 12 for bonding the core housing 3 and the honeycomb core 5.
- a thermosetting adhesive such as a modified olefin-based hot melt adhesive or an adhesive that cures at room temperature as described later may be used. From the viewpoint of preventing deformation, if a thermosetting adhesive is used, the core housing 3 constituting the drawing surface may be distorted due to heat. Therefore, a room temperature curing type is preferable.
- a well-stirred plastic dispersion liquid 7 is filled in the recess 8 of the core housing 3.
- a magnetic field is applied to the dispersion liquid 7 by bringing the tip of a magnetic pen into contact with the drawing surface or moving the eraser bar, so that magnetic particles float on the drawing surface or separate from the drawing surface. Anything can be used as long as it can sink or display pictures and characters on the drawing surface or erase them.
- a plastic dispersion liquid 7 a liquid in which magnetic particles, a fine particle thickener, and a colorant are mixed in a dispersion medium is known.
- the dispersion medium examples include polar dispersion media such as water and glycols, and nonpolar dispersion media such as organic solvents and oils.
- the magnetic particles particles of oxide magnetic materials such as black magnetite, iron oxide, chromium dioxide, and ferrite, and particles of alloy-based metallic magnetic materials such as iron, cobalt, and nickel may be used.
- the fine particle thickener include fine silicic acid composed of a single or a mixture of, for example, silicic anhydride, hydrous calcium silicate, hydrous aluminum silicate, silica powder, diatomaceous earth, kaolin, clay, bentonite, etc. There are salts, alumina, ultrafine calcium carbonate, ultrafine activated calcium carbonate, heavy calcium carbonate, hydrated basic magnesium carbonate, barium sulfate, and the like. Further, as coloring agents, white pigments and dyes are used.
- the honeycomb core 5 is bonded and fixed onto the core housing 3, and then the plastic dispersion liquid 7 is filled.
- the step of bonding the face plate 2 on 5 is performed.
- the liquid surface of the plastic dispersion liquid 7 reaches the height of the peripheral portion 3a of the concave portion 8 beyond the upper surface of the honeycomb core 5.
- the face plate 2 is bonded and fixed on the honeycomb core 5.
- an adhesive is applied to the back surface of the face plate 2.
- the adhesive is preferably one that cures at room temperature in order to prevent deformation of the face plate 2, and an epoxy resin-based adhesive or a modified acryl resin-based adhesive that is cured by irradiation with ultraviolet light is suitable. Which one to use may be determined depending on whether the bonding operation is performed in a short time or in a long time, as described later.
- Epoxy resins can be of various types, such as glycyl ester type, pheno-lunovolac type, in addition to the epoxy bis type obtained by reacting bisphenol or its derivative with epichlorohydrin.
- Curing at room temperature is often a two-part type, such as a fast-curing epoxy that combines an epoxy-polyamide-epoxy resin and a polymer carbane-based curing agent, but recently one-part, changing epoxies are also considered.
- Epoxy-modified polyamine or the like can be used as the water-curable epoxy.
- Epoxy resins also have good adhesion to almost all adherends and generally do not contain volatile solvents, so they hardly shrink after curing, have no thinning, and are whitened by solvents on plastics, etc. It has features such as being able to adhere without cracks, and having excellent chemical resistance and moisture resistance.
- the epoxy resin-based adhesive is fixed until curing is completed, but the pressing is only required to be at the contact pressure level. In general, curing is completed by leaving at room temperature for 24 hours. To shorten the curing time, the composition is cured by heating at 60 to 100 ° C for 30 to 60 minutes. Therefore, it is suitable for performing the bonding operation for a long time.
- UV-curable adhesives are those that absorb ultraviolet energy to cause a photopolymerization reaction and cure, and are radically polymerizable, and include unsaturated polyesters, polyester acrylates, urethane acrylates, silicone acrylates, and epoxy acrylates.
- the main components are oligomers and monomers such as benzoin ether-based, ben-V-phenone-based, acetophenone-based and thioxanthone-based photopolymerization initiators, to which various additives are added.
- Other examples include those containing a radical addition type polyethylene thiol as a main component, and those containing a cationic polymerization type epoxy resin / photodegradable onium salt as a main component.
- ultraviolet light does not reach the mating surface of the material to be bonded, but the face plate 2 is made of a transparent resin material and transmits ultraviolet light. No problem.
- the UV-curable adhesive cures in seconds by UV irradiation, so it can automate and speed up the line.It does not require mixing with one component.It is more energy efficient than thermal curing.
- the cured product has various physical properties such as flexibility, adhesion, and chemical resistance. Therefore, it is suitable for performing the bonding operation in a short time.
- the face plate 2 is superimposed on the core storage body 3 as shown in FIG. 6D, and further, as shown in FIG. While the face plate 2 is pressed against the opening surface of the honeycomb core 5 by the scraping means 13 having a shape or the like, it is slid slowly along the opening surface.
- the scraping means 13 may be configured to roll.
- the excess plastic dispersing liquid 7 is removed from the recess 8 with the same effect as the powder scraping, and at the same time, the face plate 2 is pressed and adhered to the upper end surface of each cell 4 of the honeycomb core 5, so that the inside thereof is The plastic dispersion liquid 7 is sealed in each cell 4 of the honeycomb core 5 without air.
- the pressing means 14 shown in FIG. 7 may be pressed and fixed to the opening surface of the honeycomb core 5 to be bonded thereto.
- an epoxy resin-based adhesive rather than an ultraviolet-curable adhesive.
- the work is simple because the pressing is performed only by a contact pressure when the face plate 2 is pressed and fixed to the honeycomb core 5 by the pressing means 14. It is preferable that the face plate 2 is not formed in a flat plate shape but is formed in a dish shape in advance according to a step between the concave portion 8 and the upper end portion of the honeycomb core 5.
- the core housing 3 is filled with the plastic dispersion liquid 7 and then appropriately formed into a cylindrical shape or the like. While pressing the face plate 2 against the honeycomb core 5 by abrading means (not shown) of the honeycomb core 5, it can be moved by sliding or rolling at a relatively high speed along the opening surface of the honeycomb core 5 in the same manner as in FIG. 6E. it can. As a result, excess plastic dispersion liquid ⁇ that has passed over the upper surface of the honeycomb core 5 is discharged from the recess 8 with the same effect as powder cutting.
- the face plate 2 is pressed against and bonded to the opening surface of the honeycomb core 5, and the plastic dispersion liquid 7 is filled in the cells 4 of the honeycomb core 5. Since the face plate 2 is adhered to the upper end of the honeycomb core 5 while pushing away the excess plastic dispersion liquid 7 by the rubbing operation, the outside liquid is excluded, and the dispersion liquid 7 which is excluded interferes with the face plate 2 and the honeycomb core 5. You can not enter between. Therefore, since air does not enter the inside of the honeycomb core 5, only the plastic dispersion liquid 7 is sealed in each cell 4 of the honeycomb core 5.
- the plastic dispersion liquid 7 is reliably sealed by the pressing means, but the work can be performed quickly by the abrasion means.
- the plastic dispersion liquid 7 above the honeycomb core 5 is for preventing air from entering when the face plate 2 is bonded to the honeycomb core 5. Is an excess liquid that will not be filled. If the amount of the excess liquid is too large, the resistance to the movement of the abrasion means 13 at the time of abrasion increases, and also, the The force of the waves becomes an element that deforms the shape of the honeycomb core 5. For this reason, the moving speed of the scraping means 13 must be suppressed, so that the work cannot be performed quickly. Therefore, it is preferable that the dimensional difference d between the honeycomb core 5 and the upper end of the recess 8 is small.
- the optimum value is about 0.0 lmm, but it is preferable to set it to 0.1 mm or less as a value suitable for practical use. Of course, this excludes the case where the dimensional difference d is 0 mm. It must be larger than 0 mm.
- the thickness of the honeycomb core 5 is about 0.5 mm to 5.0 mm. If the thickness is smaller than 0.5 mm, the magnetic particles can be seen through the outside of the face plate 2 while sinking at the bottom of the cell 4 . If the thickness is larger than 5.0 mm, the magnetic force of the magnetic pen or eraser can be reduced. This is because it must be made larger than necessary.
- the optimal value is 0.8 mn! ⁇ 2.0 mm. Therefore, the height of the recess 8 of the core housing 3 is equal to the thickness of the honeycomb core 5 plus the dimensional difference d.
- the honeycomb core 5 is bonded and fixed onto the core housing 3, and then the plastic dispersion liquid 7 is filled.
- the thickness of the core housing 3 is preferably larger than the thickness of the face plate 2, for example, the former is about 0.2 mm, and the latter is about 0.1 mm.
- the core container 3 constitutes the drawing surface, so that the thickness is better in order to make the surface smooth and not to bend when drawing, whereas the face plate 2 is made of plastic dispersion liquid. This is because it is necessary to be flexible in order to adhere to the honeycomb core 5 while fraying.
- the width of the peripheral portion 3a of the core housing 3 be slightly larger. This is because the peripheral portion 3a is also a margin for the peripheral portion of the face plate 2, so that the adhesive strength between the core housing 3 and the face plate 2 is increased. This is because there is no extra gap between the means and the positioning is smooth, and drilling for fixing to the display means is easy.
- the enclosing mode by abrasion is not limited to the above-described example.
- the peripheral portion 3a of the core housing 3 may be formed diagonally, or as shown in FIG. A step structure may be adopted, and the upper end of the middle section 3 b and the upper end of the honeycomb core 5 may be formed in the same manner.
- the liquid surface of the plastic dispersion liquid 7 containing the magnetic particles is filled up to the upper surface of the upper part 3 c of the core housing 3, and then the face plate 2 is Put on top. At this time, the peripheral portion of the face plate 2 is superimposed on the middle portion 3 b of the honeycomb core 5.
- a state in which the honeycomb core 5 having the same thickness as the height of the recess 8 is housed and fixed in the recess 8 of the core housing 3 is higher than the height of the core housing 3.
- the face plate 2 may be adhered and fixed by being housed and arranged inside the panel housing body 15 having a high dimension.
- the plastic dispersion liquid 7 containing the magnetic particles is filled in the panel housing 15, the liquid level of the plastic dispersion liquid 7 exceeds the upper surfaces of the core housing 3 and the honeycomb core 5 and the panel housing 1 5 To the upper end of the surrounding wall.
- the face plate 2 is moved along the opening surface of the honeycomb core 5 by appropriate scraping means or pressing means in the same manner as described above, or is pressed against the opening surface of the honeycomb core 5, so that the plastic dispersion liquid 7 is formed. Is pressed against the upper end surface of each cell 4 of the honeycomb core 5 So that air does not enter inside. After bonding, excess plastic dispersion liquid 7 may be removed.
- the entire surface of the face plate 2 is flat, and the periphery thereof is not deformed, so that the adhesion to the honeycomb core 5 is also ensured.
- the height of the peripheral wall of the panel housing 15 can be determined regardless of the height of the core housing 3 etc., by raising the peripheral wall, the plastic dispersion liquid 7 filled inside can be vibrated sufficiently. Stirring can be performed, and thereby, extremely small air bubbles mixed at the time of filling can be released to the atmosphere.
- the adhesive for bonding the face plate 2, the core housing 3, and the honeycomb core 5 to each other is preferably an acryl-based adhesive that cures at room temperature or an ultraviolet-curable adhesive that cures by irradiation with ultraviolet light. It is not preferable to use a thermosetting adhesive because the core housing 3 serving as a drawing surface may be distorted due to heat.
- the core block 5 sealed between the core housing 3 and the face plate 2 is not limited to the honeycomb core having the cells 4 in the honeycomb shape.
- the cell 4 may have a rectangular shape as shown in FIG. 11A, or may have a shape in which the waveform is alternately continuous as shown in FIG. 11B. Further, as shown in FIG. 11C, the shape may be a diamond or a rhombus.
- the core housing 3 and the face plate 2 are made of an olefin-based resin, they are excellent in that they have low water absorption, but they are usually difficult to adhere.
- vinyl acetate, acryl resin or UV curable adhesives are good.
- the honeycomb core 5 is bonded to the core housing 3 and the face plate 2 with an adhesive, and there is no need to control the heating temperature in detail. it can.
- the magnetic display panel 1 having the above configuration includes the core housing 3 and the face plate.
- the magnetic display panel 1 is a composite of the synthetic resin for forming the honeycomb 2 and the paper for forming the honeycomb core 5, but is also provided almost exclusively to infants. Therefore, an infant may strongly strike or hit the drawing surface of the magnetic display panel 1 with the tip of the magnetic pen.
- the impact of the magnetic pen is transmitted from the core housing 3 forming the drawing surface to the honeycomb core 5, but the honeycomb core 5 is made of relatively flexible paper, and becomes a cushion when subjected to the impact. Since it is effective, the impact is flexibly absorbed by the core housing 3 and the honeycomb core 5. As described above, since the magnetic display panel 1 is configured so that the impact force is not concentrated at one point and is absorbed around the point, the core housing 3 is not easily broken. Therefore, even if an infant strongly hits or hits the core container 3 of the magnetic display panel 1 with the tip of the magnetic pen, the plastic dispersion liquid 7 in the honeycomb core 5 leaks out and adheres to clothes, This can effectively prevent accidents such as drinking or seeing.
- the honeycomb core 5 is made of paper, the workability is superior to that of the conventional honeycomb core made of vinyl chloride, and the thickness can be reduced to about half.
- the ratio of the end face to the drawing surface is reduced.
- the drawing area increases accordingly.
- glassine paper is thinner and lighter than ordinary paper, has high transparency and transmits light well, and has high oil resistance among paper, as described above. When impregnated with 7, the transparency further increases, and the boundary with the plastic dispersion liquid 7 in the adjacent cells is difficult to see. For this reason, the drawing surface is a uniform and integrated screen in which the honeycomb shape of the honeycomb core 5 is less likely to appear.
- the honeycomb core 5 filled with the magnetic particles is bonded to the core housing 3
- the magnetic particles are attached to the end face of the cell of the honeycomb core 5 and the back surface of the core housing 3. Hard to get in between. Therefore, the drawing efficiency is significantly improved. The same effect is obtained when parchment paper is used.
- the cells of the honeycomb core 5 reflected on the drawing surface are apparently lost and the entire surface of the drawing surface is lost. Can be the same color.
- the core housing 3 since the deformation is such that a part of the core housing 3 bends into a curved surface, and does not bend at an angle exceeding the elastic limit as in the conventional case, the core housing 3 is not subjected to a shock but is subjected to an impact. 3 restores to its original planar shape due to its inherent elasticity, but with this restoring force, the deformed portion of the honeycomb core 5 can easily return to its original shape.
- the honeycomb core 5 is made of paper, it has good adhesiveness, and the core housing 3 and the face plate 2 and the honeycomb core 5 are firmly bonded. For this reason, with a shock that a normal infant applies, there will be no phenomena such as blurred display of lines or liquid leakage due to communication between adjacent cells 4, and clear lines will be drawn for a long time. Things can be done.
- honeycomb core 5 is made of paper, static electricity is not easily charged. Therefore, since the fluidity of the magnetic particles is not hindered by static electricity, smooth and clear lines can be drawn smoothly from the beginning.
- the core housing 3 and the face plate 2 of the magnetic display panel 1 are each made of an olefin synthetic resin, and the honeycomb core 5 is made of paper. Therefore, dioxin will not be generated even if it is incinerated after it is no longer needed.
- the face plate is not necessarily made of an olefin resin, but may be made of a vinyl chloride resin as in the related art. Vinyl chloride is excellent in terms of good processability and adhesiveness.Even if vinyl chloride is used, the honeycomb core 5 is made of paper, and the core housing is made of an organic synthetic resin.
- the impact of the magnetic pen can be reduced if the infant inadvertently strikes or hits the drawing surface of the magnetic display panel with the tip of the magnetic pen.
- the core housing that constitutes the drawing surface is transmitted to the core block, but since the core block is made of relatively flexible paper with a cushioning effect, the impact is absorbed by the deformation of the core block, and the drawing surface may have holes.
- the core housing and the core block become curved and deform. Tend to be strong. Therefore, the original shape can be easily restored after the deformation, and the durability is improved.
- the core block is made of paper
- the adhesive penetrates into the fibers of the opening end face of the core block, and the core block and the core housing are firmly bonded to each other.
- the adhesion between the core housing and the core block is not easily broken. Therefore, a shock such as that applied by a normal infant does not cause phenomena such as liquid leakage or unclear display, and the durability is improved.
- the core block is made of paper, it is difficult for static electricity to be charged. Therefore, since the fluidity of the magnetic particles is not hindered by static electricity, a clear line can be drawn smoothly from the beginning.
- the wall thickness can be reduced to about half that of the conventional vinyl chloride core block, so that the ratio of the end face of the core block to the drawing surface is reduced. .
- the drawing area increases accordingly.
- the area of the end face is reduced, not only the reflection surface of light from the outside is reduced, but also it is difficult for these to ride on the end face and the drawing when enclosing the magnetic particles and the like in the cells of the core block. .
- paper absorbs light well, the end surface shape of the core block is unlikely to appear on the drawing surface. Therefore, the drawing efficiency is significantly improved.
- the core housing and the face plate are each made of a synthetic resin, and the core block is made of paper. Therefore, even if it is disposed of and incinerated, it does not generate dioxin, and it can be disposed of safely without polluting the environment or harming its health.
- the core block is made of glassine paper or parchment paper, and these papers have high transparency, allow good light transmission, and are well impregnated with a plastic dispersion liquid, so that the adjacent It is difficult to see the boundary with the plastic dispersion liquid in the matching cell. For this reason, the drawing surface is a homogeneous and integrated screen where the cell shape of the core block is less likely to appear. Moreover, due to the small thickness of the core block, when the core block filled with the magnetic particles is bonded to the core housing, the magnetic particles hardly enter between the end face of the cell of the core block and the back surface of the core housing. . Therefore, the drawing efficiency is significantly improved. Further, according to one embodiment of the present invention, the core container can be configured by selecting any one of polyethylene, PET, and polypropylene, so that a core container having high transparency and strength can be obtained. .
- the adhesive may be any one selected from a vinyl acetate resin-based adhesive, an acrylic-based adhesive, and an ultraviolet curable adhesive, and the selection can be varied.
- the upper end of the recess of the core housing is formed slightly higher than the upper end of the core block. Therefore, when manufacturing the magnetic display panel, the plastic dispersion liquid overflows from each cell of the core block in the core housing, and is scraped off when the face plate is adhered onto the core block, so that the inside of each cell is removed. It is possible to manufacture a good magnetic display panel in which air does not enter the device.
- the dimensional difference between the concave portion of the core housing and the upper end of the core block is 0.1 mm or less, air is mixed into each cell of the core block. Therefore, the work of bonding the face plate to the core block can be performed quickly.
- the cells of the core block reflected on the drawing surface are apparently disappeared to make the entire drawing surface the same color. be able to.
- the core block, the core housing, and the face plate are bonded with an adhesive, so that it is not necessary to precisely control the heating temperature, which facilitates temperature control. Manufacturing efficiency can be increased.
- the core block is made of paper
- the adhesive for bonding the face plate and the core block permeates the fibers on the open end face of the core block. Therefore, the face plate and the core block are firmly bonded. Therefore, the plastic dispersion liquid is securely enclosed in each cell, and can sufficiently withstand the impact of a small pen hitting or hitting with a magnetic pen, and can always draw clear lines.
- the adhesive is a room temperature-curable adhesive
- the core housing since the adhesive is a room temperature-curable adhesive, there is no need to heat the core housing, so that the core housing itself does not deform. Therefore, the sliding of the magnetic pen at the time of drawing becomes smooth, and the completeness as a product is high.
- the adhesive since the adhesive is of an ultraviolet curing type, it cures in seconds, so that the bonding operation can be performed quickly.
- the core block is a honeycomb core, the core block having the most stable production and the highest strength can be obtained.
- the face plate in bonding the face plate to the opening surface of the core block, the face plate is moved along the opening surface while being pressed against the opening surface of the core block by appropriate means. Therefore, the bonding operation can be performed quickly.
- the face plate in bonding the face plate to the opening surface of the core block, the face plate is pressed against the opening surface of the core block by an appropriate pressing means to be bonded thereto. Since the face plate can be securely bonded to the core block and the peripheral edge of the face plate can be bonded without being deformed, the surface of the face plate can be formed to be closer to a flat surface.
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU49318/99A AU742475B2 (en) | 1998-07-31 | 1999-07-30 | Magnetic display panel and method for producing the same |
GB0008382A GB2345270B (en) | 1998-07-31 | 1999-07-30 | Magnetic display panel and method for manufacturing same |
US09/509,661 US6629847B1 (en) | 1998-07-31 | 1999-07-30 | Magnetic display panel and method for producing the same |
DE69933983T DE69933983D1 (de) | 1998-07-31 | 1999-07-30 | Magnetische anzeigetafel und herstellungsverfahren |
EP99933201A EP1022710B1 (en) | 1998-07-31 | 1999-07-30 | Magnetic display panel and method for producing the same |
CA002306263A CA2306263C (en) | 1998-07-31 | 1999-07-30 | Magnetic display panel and method for manufacturing same |
HK00106925A HK1029551A1 (en) | 1998-07-31 | 2000-10-31 | Magnetic display panel and method for manufacturing same |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10/218054 | 1998-07-31 | ||
JP10/218052 | 1998-07-31 | ||
JP21805298A JP3332348B2 (ja) | 1998-07-31 | 1998-07-31 | 磁気表示パネルの製造方法 |
JP21805498 | 1998-07-31 | ||
JP10/312585 | 1998-11-02 | ||
JP31258598A JP3193009B2 (ja) | 1998-07-31 | 1998-11-02 | 幼児用複合磁気表示パネル |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000007171A1 true WO2000007171A1 (fr) | 2000-02-10 |
Family
ID=27330097
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1999/004125 WO2000007171A1 (fr) | 1998-07-31 | 1999-07-30 | Tableau d'affichage magnetique et son procede de production |
Country Status (11)
Country | Link |
---|---|
US (1) | US6629847B1 (ja) |
EP (1) | EP1022710B1 (ja) |
KR (1) | KR100352678B1 (ja) |
CN (1) | CN1127712C (ja) |
AU (1) | AU742475B2 (ja) |
CA (1) | CA2306263C (ja) |
DE (1) | DE69933983D1 (ja) |
GB (1) | GB2345270B (ja) |
HK (1) | HK1029551A1 (ja) |
TW (1) | TW396049B (ja) |
WO (1) | WO2000007171A1 (ja) |
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US7158111B1 (en) * | 2000-03-30 | 2007-01-02 | Intel Corporation | Flexible display |
US7580180B2 (en) | 2002-03-21 | 2009-08-25 | Sipix Imaging, Inc. | Magnetophoretic and electromagnetophoretic displays |
US20040197758A1 (en) * | 2002-07-12 | 2004-10-07 | Langford Gordon B. | Magnetically responsive imaging system with display |
US20060130305A1 (en) * | 2002-08-21 | 2006-06-22 | Englot Micheal E | Wear strip replacement method and apparatus |
US7662482B2 (en) * | 2004-09-01 | 2010-02-16 | Dow Global Technologies, Inc. | Adhesion promoter |
US7226496B2 (en) * | 2004-11-30 | 2007-06-05 | Ranco Incorporated Of Delaware | Spot ventilators and method for spot ventilating bathrooms, kitchens and closets |
US20070241071A1 (en) * | 2005-11-29 | 2007-10-18 | Orange22 Design Lab Llc | Modular magnetic fixture system |
US20070119804A1 (en) * | 2005-11-29 | 2007-05-31 | Orange22 Design Lab Llc | Modular magnetic fixture system |
JP2007168132A (ja) * | 2005-12-19 | 2007-07-05 | Ricoh Co Ltd | 画像形成装置 |
US20070238080A1 (en) * | 2006-04-05 | 2007-10-11 | Martin Lynch | Magnetic display for use by coaches and trainers of various sports |
US20080220405A1 (en) * | 2006-04-05 | 2008-09-11 | Martin Lynch | Magnetic display for use by coaches and trainers of various sports |
JP4872111B2 (ja) * | 2007-04-19 | 2012-02-08 | 株式会社ワコム | 位置指示器 |
CN101816026A (zh) * | 2007-10-22 | 2010-08-25 | 夏普株式会社 | 显示装置及其制造方法 |
US8057238B2 (en) * | 2009-08-17 | 2011-11-15 | Xingkang Li | Magnetically actuated visual display board |
US9750347B2 (en) | 2012-04-30 | 2017-09-05 | Hardware Resources, Inc. | Pressure release slide latch mechanism |
US9574355B2 (en) | 2013-02-07 | 2017-02-21 | Jesse Karl Meyer | Tile with magnetic type material and covered with a layer of parchment and process thereof |
US9095939B2 (en) * | 2013-07-31 | 2015-08-04 | Earth Magnets Mfg. (Kai Ping) Co., Ltd. | Method and apparatus for manufacturing magnetic drawing board |
KR102617484B1 (ko) * | 2019-03-15 | 2023-12-26 | 주식회사 루멘스 | 플렉서블 엘이디 디스플레이 모듈을 이용한 엘이디 디스플레이 장치 |
CN111569443A (zh) * | 2020-04-21 | 2020-08-25 | 长沙师范学院 | 一种儿童书写卷轴智能玩具及使用方法 |
CN113905561B (zh) * | 2021-10-11 | 2023-02-24 | Oppo广东移动通信有限公司 | 具有纹理图案的壳体及其加工方法、电子设备 |
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- 1999-07-29 TW TW088112849A patent/TW396049B/zh not_active IP Right Cessation
- 1999-07-30 US US09/509,661 patent/US6629847B1/en not_active Expired - Fee Related
- 1999-07-30 AU AU49318/99A patent/AU742475B2/en not_active Ceased
- 1999-07-30 WO PCT/JP1999/004125 patent/WO2000007171A1/ja active IP Right Grant
- 1999-07-30 EP EP99933201A patent/EP1022710B1/en not_active Expired - Lifetime
- 1999-07-30 DE DE69933983T patent/DE69933983D1/de not_active Expired - Lifetime
- 1999-07-30 CA CA002306263A patent/CA2306263C/en not_active Expired - Fee Related
- 1999-07-30 CN CN99801630A patent/CN1127712C/zh not_active Expired - Fee Related
- 1999-07-30 KR KR10-2000-7003535A patent/KR100352678B1/ko not_active IP Right Cessation
- 1999-07-30 GB GB0008382A patent/GB2345270B/en not_active Expired - Fee Related
-
2000
- 2000-10-31 HK HK00106925A patent/HK1029551A1/xx not_active IP Right Cessation
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JPH02223934A (ja) * | 1989-02-25 | 1990-09-06 | Nippon Mektron Ltd | 電気泳動表示装置及びその製造法 |
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Also Published As
Publication number | Publication date |
---|---|
DE69933983D1 (de) | 2006-12-28 |
GB2345270B (en) | 2002-10-30 |
CA2306263C (en) | 2006-08-22 |
CN1286785A (zh) | 2001-03-07 |
AU4931899A (en) | 2000-02-21 |
EP1022710A1 (en) | 2000-07-26 |
EP1022710B1 (en) | 2006-11-15 |
US6629847B1 (en) | 2003-10-07 |
CA2306263A1 (en) | 2000-02-10 |
KR20010030858A (ko) | 2001-04-16 |
GB0008382D0 (en) | 2000-05-24 |
EP1022710A4 (en) | 2000-11-02 |
AU742475B2 (en) | 2002-01-03 |
CN1127712C (zh) | 2003-11-12 |
HK1029551A1 (en) | 2001-04-06 |
GB2345270A (en) | 2000-07-05 |
KR100352678B1 (ko) | 2003-05-01 |
TW396049B (en) | 2000-07-01 |
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