JP2007210187A - Method for manufacturing guidance floor tile for visually impaired person - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a variation-rich guidance floor tile by freely changing the presence of hue, clarity, chroma and luminescent property between a protuberance and the surface of a base tile other than the protuberance. <P>SOLUTION: This manufacturing method is to fit a block element 1 of a thermoplastic resin into a recessed part 6a of a lower die 6, then put the base tile 5 of a thermoplastic resin on the block element 1 and thermally press these materials between an upper die 7 and the lower die 6. The block element 1 of a thermoplastic resin and the base tile 5 of a thermoplastic resin are fused together in one piece by a heating press, and consequently, the guidance floor tile T1 with the protuberance made of the block element 1 formed on the surface of the tile, is obtained. In this case, the variation-rich guidance floor tile T1 can be obtained by making the block element 1 and the base tile 5 differ from each other in terms of at least one point such as either of the hue, clarity or chroma. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method for manufacturing a floor tile for guiding a visually impaired person having a protrusion on a tile surface.

  As a method for manufacturing this type of visually impaired floor tile (hereinafter simply referred to as a “guide floor tile”), for example, a vinyl chloride resin composition is used as a main component, and the main component, the composition having a different color tone, or a high melting point Synthetic resin granules are heated and kneaded to form blocks, and the blocks are pulverized and classified to form a coarse granular pattern composition. The pattern composition is filled in a mold having irregularities formed on the inner surface at high density. A method of manufacturing a marble-like or grain-like induction floor tile having a protrusion on its surface by placing a backing material on the top and heating and pressing it has been proposed (Patent Document 1).

  However, in the above manufacturing method, since the projection and the tile surface portion other than the projection are integrally formed with the same pattern composition, the pattern, color tone, brightness, saturation, etc. cannot be changed between the projection and the tile surface portion, There was a problem that only a monotonous floor tile for guidance having the same pattern on the protrusion and the surface portion could be obtained.

In addition, a floor tile for guidance in which a luminous pigment is contained in the protrusion has been proposed (Patent Document 2), but this Patent Document 2 does not disclose a specific manufacturing method.
JP-A-10-156850 JP-A-9-158451

  The present invention has been made under the above circumstances, and the problem to be solved is to freely change the hue, brightness, saturation, presence / absence of phosphorescence, etc. between the protrusion and the surface of the base tile other than the protrusion. It is an object of the present invention to provide a production method capable of obtaining a variety of induction floor tiles.

  In order to solve the above-mentioned problems, the method for manufacturing a guide floor tile according to the present invention is such that a block body made of a thermoplastic resin is fitted into a recess of a lower mold, and a base tile made of a thermoplastic resin is stacked on the upper metal mold. It is characterized by heat-pressing with a mold and a lower mold.

  In the manufacturing method of the present invention, the block bodies are sequentially fitted in the recesses of the plurality of lower molds, the base tiles are sequentially stacked thereon, and each lower mold is sequentially moved directly below the upper mold and heated. It is also preferable that the block body and the base tile are different from each other in at least one of hue, brightness, and saturation. And it is preferable that a block body is provided with the colored resin layer, the white resin layer provided in the back side, and the transparent coating resin layer which coat | covers and protects these resin layers, Furthermore, colored resin It is preferable that the layer contains a phosphorescent agent.

  In the manufacturing method of the present invention, a thermoplastic resin block body and a thermoplastic resin base tile are fused and integrated by a heating press, and a guide floor tile having a protrusion made of the block body on the tile surface is obtained. . In that case, if the block body and the base tile are made different at least at one point of hue, lightness, and saturation, a guidance floor tile rich in change can be obtained. Further, when a block body including a colored resin layer, a white resin layer on the back side thereof, and a transparent coating resin layer that covers and protects the resin layer is used, the color of the colored resin layer is brilliant. In addition, the colored resin layer is enhanced by the white resin layer on the back side, and abrasion is prevented by the transparent coating resin layer, so that a beautiful color tone is maintained over a long period of time. And if the colored resin layer of this block body contains a phosphorescent agent, the light emitted from the phosphorescent agent and the light reflected by the white resin layer on the back side enter the eyes, so there is no visual impairment even when it becomes dark It becomes possible to guide a person or a person with a low degree of disability to visually recognize the floor tile for guidance.

  In addition, if there is only one lower mold, it takes time to cool the lower mold after the hot pressing, insert the block body into the recess, and perform the hot pressing again. As in the manufacturing method of claim 2, the block bodies are sequentially fitted into the recesses of the plurality of lower molds, the base tiles are sequentially stacked thereon, and the respective lower molds are sequentially moved directly below the upper molds and heated. In the case of pressing, each lower mold is cooled and the block body is fitted in the recess after the heating press until each lower mold is moved directly below the upper mold for the next heating press. Since the base tiles can be overlapped with each other, it becomes possible to perform the heat press with the upper mold one after another, and the time interval between the heat press and the heat press is greatly shortened, so that the production efficiency is remarkably improved.

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

  FIG. 1 is a process diagram of a method for manufacturing a guide floor tile according to an embodiment of the present invention, FIG. 2 is a perspective view of the guide floor tile manufactured by the manufacturing method, and FIG. It is sectional drawing along a line.

  In the manufacturing method according to this embodiment, first, a block body 1 to be a projection 1 on the surface of the guidance floor tile T1 shown in FIG. 2 is produced. As shown in FIG. 1 (a), the block body 1 forms a two-layer laminated sheet S composed of a colored resin layer 2 and a white resin layer 3, and this laminated sheet S is shown in FIG. 1 (b). As shown in FIG. 1 (c), the punched laminated sheet S is fitted into the recess 4a on the bottom surface of the transparent frustoconical coating resin layer 4 as shown in FIG.

  The laminated sheet S may be, for example, one obtained by using a two-layer coextrusion molding machine and overlaying a molten colored resin on a molten white resin and coextruding into a sheet shape. Alternatively, the colored resin sheets may be stacked and integrated by thermocompression bonding or adhesion.

  The colored resin layer 2 of the laminated sheet S is obtained by adding various colorants (various pigments and dyes) to thermoplastic resins such as polyvinyl chloride, ethylene-vinyl acetate copolymer, polyethylene, polypropylene, and polycarbonate. Therefore, it is preferable to emit light in the dark by including the phosphorescent agent 2a together with the colorant. As the phosphorescent agent 2a, a silicate of an alkaline earth metal such as calcium, strontium, barium or magnesium is used as a base, and as an activator, europium, lanthanum, cerium, praseodymium, neodymium, samarium, gadolinium, terbium, dysprosium, holmium , Erbium, thulium, ytterbium, lutetium, manganese, tin, bismuth and the like are preferably used.

  In addition, the white resin layer 3 of the laminated sheet S is a layer in which a thermoplastic resin similar to the colored resin layer 2 contains white oxide such as titanium oxide, calcium carbonate, talc, and the like. In addition to increasing the brightness, the light emitted from the phosphorescent agent 2a is reflected to increase the light emission luminance.

  The covering resin layer 4 covers and protects the laminated sheet S fitted in the recess 4a on the bottom surface to prevent the colored resin layer 2 of the laminated sheet S from being worn, and makes the beautiful color tone of the block body 1 over a long period of time. It is a transparent layer that plays the role of maintaining, and is injection-molded with a thermoplastic resin having good transparency such as polyvinyl chloride, ethylene-vinyl acetate copolymer, polyethylene, polypropylene, polycarbonate and the like. The covering resin layer 4 of this embodiment is injection-molded into a frustoconical shape having a circular recess 4a on its bottom surface, and is fitted with the laminated sheet S punched into a circle having a size matching the recess 4a. However, the block body 1 having a truncated cone shape is manufactured by injection molding into another shape, for example, a truncated quadrangular pyramid shape having a square recess on the bottom surface, and having a size matching the recess. The block body may be manufactured by fitting the laminated sheet S punched into a square.

  The laminated sheet S punched out may be simply fitted into the recess 4a on the bottom surface of the coating resin layer 4, but may be bonded with an adhesive in some cases.

  The manufactured block body 1 is turned upside down (that is, the white resin layer 3 of the laminated sheet S is positioned above) as shown in FIG. Are fitted into the respective recesses 6a. The lower mold 6 of this embodiment has a total of 25 inverted frusto-conical recesses 6a in a vertical and horizontal direction in order to manufacture the guide floor tile T1 having 25 protrusions 1 shown in FIG. Although what is formed regularly is used, it goes without saying that the number of concave portions 6a of the lower mold 6 and the arrangement pattern may be appropriately changed.

  When the fitting of the block body 1 into the recess 6a of the lower mold 6 is completed, the base tile 5 is overlaid on the lower mold 6 as shown in FIGS. And the lower mold 6 are heated and pressed to fuse and integrate the base tile 5 and the block body 1 to produce a floor tile for induction, and as shown in FIG. 6 is opened and the floor tile T1 for guidance is taken out.

  As the base tile 5, a block body is obtained by adding various colorants (various pigments and dyes) to the above-described thermoplastic resins such as polyvinyl chloride, ethylene-vinyl acetate copolymer, polyethylene, polypropylene, and polycarbonate. The laminated sheet S fitted in the recess 4a of the coating layer 4 is colored in the same color or different color as the colored resin layer 2, but in particular, the block body 1 at least at one point of hue, brightness, and saturation. It is preferable to use a base tile 5 that is different from the colored resin layer 2, and by using such a base tile 5, it is possible to simplify the induction floor tile T 1 rich in changes in the hues of the block body 1 and the base tile 5. Can be manufactured. The base tile 5 may contain the above-described phosphorescent agent 2a to emit light in the dark.

  The conditions such as the temperature, pressure, and pressurizing time of the heating press may be appropriately determined in consideration of the type of resin of the base tile 5 and the block body 1, the thickness of the base tile 5, and the like.

  In the above heating press, if there is only one lower mold 6 in the press molding machine, the upper and lower molds 7 and 6 are opened as shown in FIG. Since it takes time to cool the lower mold 6, fit the block body 1 in the recess 6 a, overlap the base tile 5, and heat-press again, it is difficult to increase manufacturing efficiency. Therefore, in order to increase the production efficiency, it is preferable to sequentially perform the heat press while circulating the plurality of lower dies 6 in a circulating manner.

  That is, as shown in FIG. 4, four lower molds 6 are arranged with respect to one upper mold 7 and circulated 90 degrees at a time, and each lower mold 6 is sequentially cooled at position A, and at position B. The block bodies 1 are sequentially fitted into the recesses 6a of the respective lower molds 6, the base tiles 5 are stacked on the respective lower molds 6 at the position C, and the respective lower molds 6 are directly below the upper mold 7 of the position D. It is preferable that the floor tile T1 for induction is manufactured by sequentially moving and sequentially heating and pressing the upper mold 7 and the lower mold 6.

  If it does in this way, after moving and pressing each lower metal mold | die 6 just under the upper metal mold | die 7 for the next heat press, cooling of each lower metal mold | die 6, fitting of the block body 1, Since the base tiles 5 can be overlapped, it becomes possible to perform the heat press successively one after another, and the time interval between the heat press and the heat press is greatly shortened, and the manufacturing efficiency is remarkably improved. There are advantages.

Needless to say, the number of lower molds 6 is not limited to four, and may be three or five or more.

  As shown in FIG. 2, the guidance floor tile T <b> 1 manufactured by the manufacturing method of the present invention as described above has a frustoconical protrusion 1 (block body 1) on the surface of the square base tile 5. As shown in FIG. 3, the white resin layer 3 is located below the colored resin layer 2 of the block body 1. Accordingly, the vividness of the color of the colored resin layer 2 is enhanced by the white resin layer 3 on the back side, and since the phosphorescent agent 2a is contained, the light emitted from the phosphorescent agent 2a and the white resin layer on the back side even in the dark The light reflected at 3 enters the eyes and can be guided by visually recognizing the guidance floor tile T1 to a person who has no visual impairment or a person with a low degree of impairment. In addition, since the colored resin layer 2 is prevented from being worn by the transparent coating resin layer 4, a beautiful color tone is maintained over a long period of time. Then, by changing the hue, brightness, and saturation of the colored resin layer 2 and the base tile 5, the floor tile for induction T1 rich in change is obtained.

  FIG. 5 is a process diagram of a method for manufacturing a guiding floor tile according to another embodiment of the present invention, FIG. 6 is a perspective view of the guiding floor tile manufactured by the manufacturing method, and FIG. 7 is a BB of FIG. It is sectional drawing along a line.

  In the manufacturing method of this embodiment, first, the block body 1 shown in FIG. 5A, that is, the block body 1 that becomes the band-like protrusion 1 of the guide floor tile T2 shown in FIGS. This strip-shaped block body 1 has a colored resin layer 2 inside a transparent coating resin layer 4 having an isosceles trapezoidal cross section, and the white resin layer 3 is fitted into a concave groove 4 a on the bottom surface of the coating resin layer 4. For example, two layers of the coating resin layer 4 and the colored resin layer 2 are coextruded, the white resin layer 3 is supplied to the concave groove 4a on the bottom surface, and the laminate is cut into a predetermined length. By doing so, it can be efficiently manufactured. Since the colored resin layer 2, the white resin layer 3, and the coating resin layer 4 are the same as those described above, description thereof is omitted.

  Next, the belt-like block body 1 is turned upside down as shown in FIG. 5B, and fitted into the groove-shaped recess 6a of the lower mold 6 of the press molding machine. The lower mold 6 of this embodiment uses four groove-shaped recesses 6a formed in parallel in order to manufacture the guide floor tile T2 having the four strip-shaped protrusions 1 shown in FIG. However, it goes without saying that the number and arrangement of the groove-shaped recesses 6a of the lower mold 6 may be appropriately changed.

  When the band-like block body 1 is fitted, the base tile 5 is overlaid on the lower mold 6 and heated by the upper mold 7 and the lower mold 6 as shown in FIGS. 5 (c) and 5 (d). By pressing, the base tile 5 and the block body 1 are fused and integrated to produce a guide floor tile, and the upper and lower molds 7 and 6 are opened as shown in FIG. Take out the tile T2. Since the base tile 5 is the same as described above, the description thereof is omitted.

  In addition, it is preferable that this heating press improves the manufacturing efficiency of the floor tile T2 for induction | guidance | derivation by circulating and moving a several lower metal mold | die like the case of the said embodiment.

  It goes without saying that the guidance floor tile T2 manufactured by such a manufacturing method also has the same effects as the above-described guidance floor tile T1 and can safely guide visually impaired persons and the like.

It is process drawing of the manufacturing method of the floor tile for induction | guidance | derivation which concerns on one Embodiment of this invention. It is a perspective view of the floor tile for guidance manufactured with the manufacturing method. It is sectional drawing along the AA line of FIG. It is explanatory drawing of other embodiment of this invention which heat-presses by circulatingly moving several lower metal mold | dies. It is process drawing of the manufacturing method of the floor tile for induction | guidance | derivation which concerns on other embodiment of this invention. It is a perspective view of the floor tile for guidance manufactured with the manufacturing method. It is sectional drawing along the BB line of FIG.

Explanation of symbols

T1, T2 Induction floor tile 1 Block body 2 Colored resin layer 2a Phosphorescent agent 3 White resin layer S Laminated sheet 4 Coating resin layer 5 Base tile 6 Lower mold 7 Upper mold

Claims (5)

  Injecting a block of thermoplastic resin into the recess of the lower mold, overlaying a thermoplastic resin base tile on top of it, and heating and pressing with the upper mold and the lower mold Floor tile manufacturing method.   The block body is sequentially fitted into the recesses of the plurality of lower molds, the base tiles are sequentially stacked thereon, and the respective lower molds are sequentially moved directly below the upper molds and heated and pressed. The manufacturing method as described.   The manufacturing method according to claim 1, wherein the block body and the base tile are different in at least one of hue, brightness, and saturation.   The block body comprises a colored resin layer, a white resin layer provided on the back side thereof, and a transparent coating resin layer for covering and protecting these resin layers. Item 3. The manufacturing method according to Item 2.   The phosphorescent agent is contained in the colored resin layer, The manufacturing method of Claim 4 characterized by the above-mentioned.

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