JP5127336B2 - Lid or manhole cover - Google Patents

Description

  The present invention relates to a lid for a bag or a manhole, and more particularly, to a lid for a bag or a manhole, for example, on which an unevenness for preventing slipping is formed.

  Conventionally, unevenness for preventing slipping is formed on the upper surface of a lid used for a bag or a manhole. Since these lids are often installed by local governments, there is a case where a design designated by each local government is expressed on the upper surface of the lid using the unevenness. Some of the designs are colored by applying paint to the recesses on the top surface of the lid.

  In addition, paying attention to the publicity of these lids, techniques for using these lids as advertising media have also been proposed. For example, in the technique of Patent Document 1, a recess having a predetermined size is provided on the outer surface of a manhole cover, and an advertisement medium such as a neon tube device and a hologram image is detachably fitted and fixed in the recess. The advertising medium is protected from road loads and impacts by a transparent plate provided on the advertising medium.

Moreover, in the technique of patent document 2, the 2 layer structure of a cover main body and a surface layer part is employ | adopted, and the surface layer part is supported by the cover body so that attachment or detachment is possible, and the surface is made up with a required drawing. For example, the surface layer portion has a decorative surface that is a drawing drawn by photography or printing, and the drawing is protected by a wear-resistant material such as ceramic.
JP 2002-188169 A [E02D 29/14] JP-A-6-158664 [E02D 29/14]

  When expressing the design using the unevenness formed on the upper surface of the lid, a dedicated mold is required for each design, so not only the time required for mold production is required, but also a small amount of lid This is not profitable and expensive. In addition, the design that can be expressed by the unevenness on the upper surface is considerably limited, and even if the paint is poured into the recesses and colored, the color is easily lost. Furthermore, since the uneven shape changes depending on the design, there is a possibility that the anti-slip function cannot be exhibited properly, and it is dangerous if a pedestrian or the like passes through it.

  Moreover, in the technique of patent document 1, although the upper surface of a lid | cover is covered with the transparent plate, since the unevenness | corrugation is not formed there, it does not have a slip prevention function at all. In addition, since the advertising medium is fitted into the lid and the transparent plate is provided thereon, the number of parts is increased, and manufacturing takes time and cost.

  Furthermore, in the technique of Patent Document 2, as in the technique of Patent Document 1, the number of parts increases, and manufacturing takes time and cost. In addition, Patent Document 2 describes that it is desirable to impart a slip resistance by forming a ceramic or an appropriate resin layer on the surface of the relief layer, but no specific mode is described. Therefore, it is unclear whether the lid according to the technique of Patent Document 2 has an anti-slip function.

  Therefore, the main object of the present invention is to provide a novel lid for a bag or manhole.

  Another object of the present invention is to provide a lid for a bag or a manhole in a short period of time, capable of supporting various designs while maintaining an anti-slip function.

  Still another object of the present invention is to provide a lid for a bag or manhole that can reduce the manufacturing cost.

  The present invention employs the following configuration in order to solve the above problems. Note that reference numerals in parentheses and supplementary explanations indicate correspondence with embodiments described later in order to help understanding of the present invention, and do not limit the present invention.

According to a first aspect of the present invention, there is provided a collar or manhole cover on which an uneven surface having a predetermined pattern for preventing slip is formed on an upper surface, a color printing layer on which a designed image is printed , a top surface, a side surface, and It is formed continuously across the bottom surface, and the transparent protective layer is formed over at least the entire top surface of the color printing layer, and is formed continuously over the top surface, side surface and bottom surface forming irregularities. And a lid for a bag or manhole.

In the first invention, the lid (10) is a lid used for an underground structure (50) such as a fence and a manhole, and the upper surface (12a) is formed with unevenness having a predetermined pattern for preventing slippage. A lid (12) is included. On the upper surface of the lid, for example by using an inkjet printer (20) using UV curable ink, color print layer by printing designed image (14), the top surface forming a concave-convex, sides and It is formed continuously across the bottom surface . Further, a transparent protective layer (16) is formed on the upper surface of the color print layer by using, for example, an ink jet printer using a UV curable clear ink. The transparent protective layer is formed over at least the entire upper surface of the color print layer, and is continuously formed across the top surface, the side surface, and the bottom surface forming the unevenness. For example, the transparent protective layer is integrally formed so as to cover the color print layer in a thin film shape. As a result, fading of the color printing layer can be delayed, wear resistance is improved, gloss is imparted to the color printing layer, and design is improved.

  According to the first invention, various designs can be expressed in full color while maintaining the anti-slip function due to the unevenness formed on the upper surface of the lid. Further, since it is not necessary to manufacture a dedicated mold for each design, it can be manufactured in a short period of time and the manufacturing cost can be reduced.

According to a second aspect of the present invention, in the lid for manhole or anti-slip formed on the upper surface, a color printing layer is formed on the upper surface, and the transparent protection formed on the upper surface of the color printing layer is scattered. A lid for a basket or manhole basket, characterized in that a layer is formed.

In the second invention, the transparent protective layer (16) is formed, for example, so that circular dots are arranged in a plan view on the entire upper surface of the color print layer (14). Thus, the amount of clear ink used can be suppressed by forming the transparent protective layer in a scattered manner. Further, when the transparent protective layer is damaged by a sharp object or the like, the influence is limited only to the peeling of each dot portion, so that the influence on the color print layer can be reduced.

  According to the present invention, it is possible to provide a lid for a bag or manhole that can support various designs while maintaining the anti-slip function in a short period of time, and the manufacturing cost can be reduced.

  The above object, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

  1 and 2, a lid 10 according to an embodiment of the present invention includes a lid 12 and a color print layer 14 formed on an upper surface 12a thereof. As shown in FIG. 3, the lid 10 is a lid used for a dredging such as a rainwater tank and a sewage tank, and an underground structure 50 such as a manhole, and its upper surface is exposed to the ground surface 52.

  The lid body 12 is a general-purpose lid formed of a synthetic resin such as hard vinyl chloride using a mold. The shape of the lid body 12 is appropriately set according to the shape of the opening such as a ridge to be applied, and includes an appropriate shape formed in a circular shape or a square shape in a plan view. The diameter of the lid 12 is, for example, 75 mm to 600 mm, and preferably 75 mm to 200 mm. Further, the height of the lid 12 is, for example, 10 mm to 350 mm, and desirably 10 mm to 50 mm. Further, the top surface 12a of the lid body 12 is provided with unevenness, and the antislip effect is exhibited by the unevenness. The height of the unevenness of the upper surface 12a is, for example, 0.5 mm-10 mm, and preferably 1.0 mm-3.0 mm. If the height of the unevenness is too high, there will be an obstacle to the formation of the color printing layer 14 described later, and if it is too low, the anti-slip effect will be impaired. By adopting the height of the unevenness within such a range, The printing layer 14 can be appropriately formed, and the anti-slip effect is appropriately exhibited. Moreover, the uneven | corrugated pattern of the upper surface 12a can utilize the conventional standard thing set so that the anti-slip | skid effect can be exhibited appropriately, and is not limited to the pattern shown in FIG.

  The color printing layer 14 is formed on the upper surface 12a of the lid 12 by using an inkjet printer 20 that uses UV (ultraviolet) curable ink, which will be described in detail later. In other words, the color printing layer 14 is formed of UV curable ink and expresses a variety of designs in full color. 1 and 2, the color print layer 14 is formed over the entire upper surface 12a of the lid 12, but as shown in FIGS. 4 and 5, it is formed only on a part of the upper surface 12a. You can also

  A transparent protective layer 16 is formed on the upper surface of the color print layer 14. The transparent protective layer 16 is formed of a UV curable clear ink (colorless and transparent ink) mainly composed of an acrylic resin and a polyester resin, and covers the entire upper surface of the color printing layer 14 in a thin film shape. By forming the transparent protective layer 16 as described above, the color printing layer 14 is given gloss and the design is improved, the fading of the color printing layer 14 can be delayed, and the wear resistance can be improved. it can.

  As will be described later, in this embodiment, the transparent protective layer 16 is formed by using the ink jet printer 20, but the transparent protective layer 16 can also be formed by using other equipment. For example, the transparent protective layer 16 may be formed by spraying clear ink using a spray gun or applying clear ink using a brush or the like. As the clear ink in this case, an ink mainly composed of an acrylic resin or a silicon-modified resin can be used. As shown in FIGS. 4 and 5, when the color printing layer 14 is formed only on a part of the upper surface 12 a of the lid 12, the transparent protective layer 16 is provided only on the upper surface of the color printing layer 14. In addition to the formation, the transparent protective layer 16 may be formed also on the upper surface 12a of the lid body 12 where the color printing layer 14 is not formed. For example, the transparent protective layer 16 can be formed so as to cover the entire upper surface 12 a of the lid 12 regardless of the size of the color printing layer 14.

  The configuration of the inkjet printer 20 (hereinafter simply referred to as “printer 20”) will be briefly described below. As shown in FIG. 6, the printer 20 includes a computer 22, a support base 24, a print head 26, a UV lamp 28, and the like.

  The computer 22 controls the operation of the printer 20. For example, the computer 22 acquires design information such as photographs and prints read using a scanner, and images created using image processing software, and drives and controls the print head 26 and the like based on the acquired design information. To do.

  The support table 24 is a table on which the lid body 12 is placed. The support base 24 supports the lid 12 while suctioning it with a vacuum so that the lid 12 is not displaced.

  The print head 26 includes a first head that ejects UV curable color ink and a second head that ejects UV curable clear ink, and is provided above the support 24. A plurality of nozzles (not shown) are provided on the lower surface. The print head 26 moves in an arbitrary direction parallel to the upper surface of the support base 24 in accordance with an instruction from the computer 22 and ejects color ink from the nozzles of the first head at a predetermined timing. Then, a color ink is landed on a predetermined portion of the upper surface 12a of the lid 12 to draw a desired design. Similarly, clear ink is ejected from the nozzles of the second head at a predetermined timing.

  The UV lamp 28 is provided on one side or both sides of the print head 26, moves together with the print head 26, and irradiates ultraviolet rays according to instructions from the computer 22.

  However, it is also possible to adopt a configuration in which the first head and the second head of the print head 26 and the UV lamp 28 are not moved together, but are moved separately. Further, the print head 26 and the like are moved in the left-right direction, and the upper portion of the support base 24 is moved in the front-rear direction, so that the print head 26 and the like are relatively moved in an arbitrary direction parallel to the upper surface of the support base 24. You may do it.

  A method of manufacturing the lid 10 by forming the color printing layer 14 and the transparent protective layer 16 on the upper surface 12a of the lid 12 using such a printer 20 will be described below. Specifically, first, the lid body 12 is arranged on the support base 20 with the upper surface 12 a of the lid body 12 facing upward. Next, white ink is ejected from the first head of the print head 26 onto the upper surface 12a of the lid body 12, and backing printing with the white ink is performed in accordance with the shape of the desired design. By this backing print, the transparent or colored lid 12 can be beautifully expressed in full color. Subsequently, after the color ink is ejected from the first head of the print head 26 and a desired design is drawn on the upper surface 12 a of the lid 12, ultraviolet rays are irradiated by the UV lamp 28. As a result, the color ink is solidified and the color printing layer 14 is formed. Then, clear ink is ejected from the second head of the print head 26, and the entire upper surface of the color print layer 14 is covered with a clear ink in a thin film shape, and then ultraviolet rays are irradiated by the UV lamp 28. As a result, the clear ink is solidified and the transparent protective layer 16 is formed.

  Thus, by using the printer 20, a full color design can be easily applied to the upper surface 12 a of the lid 12. Further, since the thickness of the color printing layer 14 and the transparent protective layer 16 formed in this way is thinner than the height of the unevenness formed on the upper surface 12a of the lid 12, the uneven shape of the upper surface 12a is almost as it is. Remain.

  According to this embodiment, it is possible to express a variety of designs in full color while maintaining the anti-slip function due to the unevenness formed on the upper surface 12a of the lid 12. Therefore, even if a pedestrian, a bicycle, or the like passes on the lid 10, the anti-slip effect is exhibited, and the pedestrian or the like is prevented from falling, and safety is maintained.

  Moreover, since various designs can be expressed delicately, the lid 10 can be used as an advertising medium in a commercial facility and various information can be transmitted from the lid 10. Conversely, for example, by adopting a design such as asphalt or tile pattern according to the surrounding road surface such as a manhole where the lid 10 is installed, the lid 10 is blended into the surrounding scenery, and the cityscape is maintained. It can also be used. Also, instead of using the same pattern as the road surface, it is possible to express the beauty of the new cityscape by adopting an appropriate design that harmonizes with the surrounding scenery.

  Furthermore, since it is not necessary to manufacture a dedicated mold for each design, it is possible to manufacture in a short period of time without requiring a period required for manufacturing the mold, and to reduce the manufacturing cost. For example, it is only necessary to employ one type of lid 12 on which irregularities that are optimal for exhibiting the anti-slip effect are employed, and to print various desired designs. In addition, since full-color printing is performed directly on the lid 12, another member other than the lid 12 is not required, and it does not take time to manufacture, and the manufacturing cost can be reduced.

  Furthermore, when it becomes necessary to change the design of the color printing layer 14 of the lid 10, a new design can be expressed by further overwriting the color printing layer 14 and the transparent protective layer 16 on the lid 10. . Further, the lid 10 itself may be replaced to express a new design. Since the weight of the ink used for the color printing layer 14 and the transparent protective layer 16 is small compared with the weight of the synthetic resin used for the lid body 12, the used lid 10 is used for recycling as it is. Because of this, there is no waste of resources.

  In the above-described embodiment, the transparent protective layer 16 is formed so as to cover the entire upper surface of the color print layer 14 in a thin film shape. However, as another embodiment, as shown in FIGS. The layer 16 can also be formed as dots. Specifically, the transparent protective layer 16 shown in FIG. 7 is formed on the upper surface of the color print layer 16 so that circular dots are arranged in a plan view. The diameter of each dot is, for example, 0.1 mm-2.0 mm, and preferably 0.5 mm-1.0 mm. Moreover, the space | interval of each dot is 0.1 mm-1.0 mm, for example, Preferably, it is 0.2 mm-0.5 mm.

  When forming such a transparent protective layer 16, for example, after forming the color print layer 14, clear ink is ejected from the second head of the print head 26 at a predetermined timing, and is applied to the upper surface of the color print layer 14. Make them land like dots. Then, UV light is irradiated from the UV lamp 28 to solidify the clear ink arranged in a dot shape.

  In FIG. 7, the shape of the transparent protective layer 16 is shown by a solid line so that the shape of the transparent protective layer 16 can be easily understood. Therefore, the design by the color print layer 14 is expressed in black compared to that of FIG. 4. However, actually, since the transparent protective layer 16 is transparent, there is no influence on the expression of the design by the color print layer 14, and the embodiment shown in FIG. 4 and the embodiment shown in FIG. The design is expressed in much the same way.

  FIG. 7 shows the case where the color print layer 14 is formed only on a part of the upper surface 12a of the lid body 12, but the transparent protective layer 16 formed in a scattered manner is the color print layer 14. Is also applicable to the case where it is formed over the entire top surface 12 a of the lid 12.

  Further, in FIG. 7, the transparent protective layer 16 is formed so that circular dots are arranged in plan view, but the transparent protective layer 16 may be formed so that dots such as triangles and quadrangles are arranged. In addition to forming the transparent protective layer 16 so that dots of a certain shape are regularly arranged, the shape of the dots may be different for each dot, or the dots may be irregularly arranged.

  Furthermore, in FIG. 7, the transparent protective layer 16 formed in a scattered manner is formed only on the upper surface of the color printing layer 14, but the upper surface 12 a of the lid 12 on which the color printing layer 14 is not formed. The transparent protective layer 16 may also be formed on the part. For example, regardless of the size of the color print layer 14, the transparent protective layer 16 formed in a scattered manner on the entire upper surface 12 a of the lid 12 can also be formed.

  Thus, by forming the transparent protective layer 16 in a scattered manner, the amount of clear ink used can be suppressed, and the manufacturing cost of the lid 10 can be reduced. In addition, by forming the transparent protective layer 16 in a scattered manner, unevenness is slightly formed, and an anti-slip effect due to the unevenness can also be expected.

  Furthermore, in the case where the entire transparent protective layer 16 is formed integrally, the transparent protective layer is different from the difference between the adhesive force of the lid 12 and the color print layer 14 and the adhesive force of the color print layer 14 and the transparent protective layer 16. When 16 is severely damaged by a sharp object or the like, the influence may reach the entire color printing layer 14 and the color printing layer 14 may be peeled off from the lid 12. However, if the transparent protective layer 16 is formed in a scattered manner, the influence is limited only to the peeling of each dot portion, so that the influence on the color print layer 14 can be reduced. If each dot is formed in the above-described diameter and interval, the overall density balance is good, and even if a part of the transparent protective layer 16 is peeled off, the influence on the color print layer 14 is minimized. can do.

  In the above-described embodiment, the synthetic resin lid body 12 is employed. However, the lid body 12 may be formed of a metal such as cast iron. In this case, the color printing layer 14 may be formed directly on the metal lid 12, but sufficient adhesion may not be obtained. It is preferable to form a primer layer on the first layer and form a color printing layer 14 thereon to improve the adhesion between the lid 12 and the color printing layer 14.

  In the above-described embodiment, the color printing layer 14 and the transparent protective layer 16 are formed using UV curable ink. This is because the UV curable ink has high adhesion to the synthetic resin and can be directly printed on the synthetic resin lid 12, but the ink used for forming the color printing layer 14 or the transparent printing layer 16 is used. Are not limited to UV curable inks, and various inks such as water-based and solvent-based inks can also be used. However, in this case, it may be necessary to separately form a primer layer for improving adhesion to the lid 12 and a surface treatment layer for improving water resistance and weather resistance.

It is a top view which shows one Example of the lid | cover for a bag or manhole of this invention. It is sectional drawing of the lid | cover of FIG. 1, (A) shows the mode of the whole cover cross section, (B) shows a mode that a part of cover cross section was expanded. It is a schematic sectional drawing which shows a mode that the cover of FIG. 1 was installed in the underground structure. It is a top view which shows the other Example of the lid | cover for ridges or manholes of this invention. It is sectional drawing of the lid | cover of FIG. 4, (A) shows the mode of the whole lid | cover cross section, (B) shows a mode that a part of lid cross-section was expanded. It is an illustration figure which shows the structure of the outline of an inkjet printer. It is a top view which shows the further another Example of the lid | cover for a bag or manhole of this invention, (A) shows the mode of the whole lid | cover, (B) shows a mode that a part of lid | cover was expanded. It is an expanded sectional view which shows a mode that a part of cover lid part of FIG. 7 was expanded.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Lid 12 ... Lid 12a ... Upper surface of lid 14 ... Color printing layer 16 ... Transparent protective layer 20 ... Inkjet printer

Claims (2)

In the lid for the manhole or manhole in which irregularities consisting of a predetermined pattern for slip prevention are formed on the upper surface,
A color printing layer on which the designed image is printed is continuously formed across the top surface, the side surface and the bottom surface forming the unevenness, and
A lid for a bag or manhole , wherein a transparent protective layer is formed at least over the entire top surface of the color printing layer and is continuously formed across the top, side and bottom surfaces forming the irregularities. . In the lid for manholes or manholes where anti-slip irregularities are formed on the top surface,
A lid for a bag or manhole bag, wherein a color printing layer is formed on the upper surface, and a transparent protective layer is formed on the upper surface of the color printing layer.

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