JP2022025798A - Double face curing board - Google Patents

Abstract

To provide a double face curing board capable of being repeatedly used in a state where damage and contamination are removed even when an upper face of a double face curing board is damaged or contaminated by a repeated usage.SOLUTION: A moisture proof layer 5 is provided on both faces of a board material layer 3 for keeping strength, and peeling film layers 7, 7 are respectively formed on an upper layer of the upper and lower moisture proof layers 5, 5, to constitute a double face curing board 10. When either peeling film layer 7 is damaged or contaminated, the peeling film layer 7 is peeled, to reuse the double face curing board 10. Since the peeling film layer 7 has an area smaller than that of the moisture proof layer 5 and an exposed area 5a exists, an end portion of the peeling film layer 7 can be easily found, to peel it. Further, after all of the peeling film layers on a surface is peeled and used, when an upper face of the double face curing board is damaged or contaminated, the double face curing board can be turned over, to continue to use in a state close to a new one.SELECTED DRAWING: Figure 2

Description

The present invention relates to a double-sided curing board for protecting and curing a surface such as a floor that has already been constructed at a construction site or the like from damage or contamination.

At construction sites, etc., it is widely practiced to protect the floor surface that has already been completed and finished by using a curing board so that it will not be damaged or contaminated by subsequent work such as wall and ceiling construction. ing. In addition, when carrying in and out moving luggage, a curing board may be used to prevent the floor of the transport truck and the floor of the house to be carried in from being damaged or contaminated by the shoes (Patent Documents 1 and 2). ).

FIG. 8 is a perspective view of the conventional curing board 1 used for the above-mentioned purpose, and generally has a rectangular shape having a size corresponding to the purpose of use and is laminated with various layers. Many have a structure. The curing board 1 in the figure is designed to be compactly folded by the mountain fold lines 2a and 2a and the valley fold lines 2b. Is used by disconnecting.

FIG. 9 shows a cross-sectional view of the curing board 1 of FIG. As shown in FIG. 9, the curing board 1 has a board material layer 3 for maintaining strength, and the curing board 1 is prevented from warping due to humidity on the upper surface side of the board material layer 3. A moisture-proof layer 5 is provided. In this example, a cushion layer 4 that is in direct contact with a surface to be cured, such as a floor surface, is formed on the lower surface side of the board material layer 3.

Such a curing board 1 is peeled off after the end of use, but if there is no problem in strength, it is used repeatedly without being discarded. However, even if it is strong enough to withstand reuse, it is not visually preferable to bring a dirty curing board to the construction site, and it may give a bad impression to the customer at the delivery destination, for example.

Japanese Patent No. 6526486 Japanese Unexamined Patent Publication No. 2019-35293

The present invention provides a double-sided curing board that can be repeatedly reused with the damage and dirt removed even when the upper surface of the curing board is damaged or soiled by use.

The double-sided curing board of the present invention is a double-sided curing board for covering and protecting the surface to be cured, and is a board material layer for maintaining strength and a moisture-proof board provided on the front side and the back side of the board material layer, respectively. It is characterized in that it is provided with a layer, and at least one release film layer is formed on each of the front and back moisture-proof layers.

As a result, even if the upper surface of the double-sided curing board is damaged or soiled by use, the release film layer can be peeled off from the moisture-proof layer so that the double-sided curing board can be reused in a state close to new. Further, in the case of a double-sided curing board having a plurality of release film layers on the front surface, even if the upper surface of the double-sided curing board is damaged or soiled again due to repeated use, the release film layer is peeled off each time for a long period of time. The double-sided curing board can be used in a state close to new. Furthermore, if the upper surface of the double-sided curing board is damaged or soiled after all the release film layers on the front side have been peeled off, the double-sided curing board can be turned over to continue using it in a state close to new. .. Here, in the case of a double-sided curing board having a plurality of release film layers on the back surface of the double-sided curing board, even if the upper surface of the double-sided curing board is damaged or soiled again due to use after turning over, it is peeled off each time. By peeling off the film layer, the double-sided curing board can be repeatedly used for a long period of time in a state close to new.

Here, the double-sided curing board of the present invention includes two board materials for maintaining strength, a moisture-proof layer is formed on one surface of each of the board materials, and at least one is further formed on each moisture-proof layer. A release film layer can be provided, and the other surfaces of the two board materials can be bonded to each other to form the board material layer.

In this way, a moisture-proof layer and a release film layer are formed on one surface of each of the two board materials, and the other surfaces of these board materials are bonded together to form a board material layer, thereby curing both sides. The board manufacturing process can be simplified.

Here, on either one or both surfaces of the double-sided curing board, the area of the release film layer is smaller than the area of the moisture-proof layer, and the moisture-proof layer has an exposed area on at least a part of the peripheral edge portion. It is preferable to have it. This makes it possible to easily peel off the release film layer.

In a double-sided curing board provided with a plurality of the release film layers on either one or both surfaces of the double-sided curing board, the area of the release film layer is smaller than the area of the release film layer below the release film layer. It is preferable that the release film layer of the lower layer has an exposed area at least a part of the peripheral portion. As a result, when the uppermost release film layer is peeled off, it is possible to avoid peeling off the lower release film layer that does not need to be peeled off together.

When the plane shape of the double-sided curing board is rectangular, the width of the release film layer on either one or both surfaces of the double-sided curing board is the width of the moisture-proof layer in either the vertical or horizontal direction. It is narrower, and the exposed area of the moisture-proof layer is preferably formed along at least one side of the moisture-proof layer. This makes it possible to easily peel off the release film layer.

In addition, when the planar shape of the double-sided curing board is rectangular, in the double-sided curing board provided with a plurality of release film layers on one or both surfaces of the double-sided curing board, the width of the release film layer is It is preferable that the width is narrower than that of the release film layer below the release film layer, and the exposed area of the lower film layer is formed along at least one side of the release film layer of the lower layer. As a result, when the upper release film layer is peeled off, it is possible to avoid peeling off the lower release film layer that does not need to be peeled off together.

It is preferable that the release film layer is colored in a color different from that of the moisture-proof layer on either one or both surfaces of the double-sided curing board. This makes it easy to find the edges of the release film layer.

Further, in the double-sided curing board provided with a plurality of release film layers on either one or both surfaces of the double-sided curing board, the moisture-proof layer and the release film layer are colored in different colors from each other. Is preferable. As a result, the end portion of the release film layer to be peeled off can be easily found.

In the double-sided curing board of the present invention, since the release film layer is formed on the moisture-proof layer, even if the upper surface of the double-sided curing board is damaged or soiled, the release film layer can be peeled off from the moisture-proof layer to make a new product. It can be reused in a close state. Further, in the double-sided curing board of the present invention provided with a plurality of release film layers, even if the upper surface of the double-sided curing board is damaged or soiled again due to repeated use, the release film layer is peeled off each time for a long period of time. The double-sided curing board can be used repeatedly in a state close to new.

Furthermore, if the upper surface of the double-sided curing board is damaged or soiled after all the release film layers on the front side have been peeled off, the double-sided curing board can be turned over to continue using it in a state close to new. .. In addition, in the case of a double-sided curing board having a plurality of release film layers on the back surface of the double-sided curing board, even if the upper surface of the double-sided curing board is damaged or soiled again due to use after turning over, it is peeled off each time. By peeling off the film layer, the double-sided curing board can be repeatedly used for a long period of time in a state close to new.

It is a perspective view of the double-sided curing board which concerns on one Embodiment of this invention. It is sectional drawing (side view) of the double-sided curing board seen from the direction of the arrow 21 of FIG. It is a perspective view of the double-sided curing board which concerns on other embodiment of this invention. It is sectional drawing (side view) of the double-sided curing board seen from the direction of the arrow 22 of FIG. It is a perspective view of the double-sided curing board which concerns on still another Embodiment of this invention. It is sectional drawing (side view) of the double-sided curing board seen from the direction of the arrow 23 of FIG. It is a perspective view and a partially enlarged view of the double-sided curing board which concerns on still another Embodiment of this invention. It is a perspective view which shows the conventional double-sided curing board. It is a partial cross-sectional view which shows the cross section of the conventional double-sided curing board of FIG.

The embodiments of the present invention will be described below with reference to the drawings, but the present invention is not limited to the following description.
<Embodiment 1>
FIG. 1 is a perspective view of the double-sided curing board 10 of the present embodiment, and generally has a rectangular shape having a size corresponding to a purpose of use. As the size and shape of the double-sided curing board 10 of the present embodiment, for example, a rectangular shape having a length of 170 cm and a width of 72 cm can be shown. As shown in the figure, the double-sided curing board 10 of the present embodiment is provided with a fold line 2 so that it can be compactly folded to half the area during storage and transportation. When using, spread it out vertically and horizontally according to the area of the part to be cured, tape the seams, etc., and cut off the excess part before use.

FIG. 2 is a partial view of the end portion of the double-sided curing board 10 of the present embodiment viewed from the side along the arrow 21 of FIG. 1, but in reality, the one manufactured continuously in the length direction is cut. Since the double-sided curing board 10 is manufactured by the above, FIG. 2 is substantially a cross-sectional view. As shown in the figure, the double-sided curing board 10 of the present embodiment has a board material layer 3 for maintaining strength, and the board material layer 3 has, for example, a paper tube having a thickness of 0.8 mm. Base paper is preferably used. Moisture-proof layers 5 and 5 are provided on the front and back surfaces of the board material layer 3 to prevent the double-sided curing board 10 from warping due to humidity. As the material of the moisture-proof layer 5, a polyethylene film is preferably used in consideration of the adhesiveness to the board material layer 3 and the release film layer 7 described later, and the thickness of each moisture-proof layer 5 is, for example, 30 μm. In the present embodiment, the moisture-proof layer 5 and the board material layer 3 are bonded by polyethylene extrusion laminating.

In the double-sided curing board 10 of the present embodiment, the release film layers 7 and 7 are further formed on the upper surface of each moisture-proof layer 5. As the material of each release film layer 7, a polyethylene film is preferably used in consideration of the adhesiveness with the moisture-proof layer 5. An acrylic (acrylic urethane resin-based / acrylic rubber-based / acrylic resin-based / silicone acrylic resin-based) adhesive is preferably used for adhering the moisture-proof layer 5 and the release film layer 7. Further, when the moisture-proof layer 5 and the release film layer 7 are laminated and bonded by heat, OPP (biaxially stretched polypropylene film) can also be used as the release film layer 7, and the release film layer 7 in this case is suitable. The thickness is, for example, 20 μm. However, when OPP is used as the release film layer 7, it should be noted that a polypropylene film cannot be used as the second release film layer 8 (FIG. 5) described later.

Each release film layer 7 is peeled off from the moisture-proof layer 5 when the double-sided curing board 10 is reused, and the adhesive force of the release film layer 7 to the moisture-proof layer 5 at that time is 0.3 to 0.75 N / 25 mm ( Measurement conditions: Specimen SUS430BA, peeling angle 180 degrees, peeling speed 300 mm / min), and more preferably 0.3 to 0.5 N / 25 mm. If this adhesive force is greater than these ranges, the release film layer 7 will be torn or difficult to peel off. Further, if the adhesive strength is smaller than these ranges, the release film layer 7 may be peeled off during use.

In the double-sided curing board 10 of the present embodiment, as shown in FIG. 1, the width of each release film layer 7 is narrower than the width of each moisture-proof layer 5 under the double-sided curing board 10 in the width direction of the double-sided curing board 10 having a rectangular planar shape. Therefore, the area of each release film layer 7 is smaller than the area of each moisture-proof layer 5 of the lower layer. As a result, each moisture-proof layer 5 has exposed areas 5a and 5b that are exposed along the two sides of the double-sided curing board 10 in the longitudinal direction (see also FIG. 2). In the double-sided curing board 10 of the present embodiment, the exposed areas 5a and 5b have a length of 170 cm and a width of 4.5 cm. With such exposed areas 5a and 5b, when the release film layer 7 is peeled off for reuse, the end portion of the release film layer 7 can be easily found. Further, the configuration in which the width of the release film layer 7 is narrower than the width of the moisture-proof layer 5 to provide the exposed areas 5a and 5b is the same on the back surface side of the double-sided curing board 10. As a result, the end portion of the release film layer 7 can be easily found even on the back surface side.

Further, in the double-sided curing board 10 of the present embodiment, each release film layer 7 is colored, for example, blue, which is different from each of the moisture-proof layers 5 under the release film layer 7, whereby the end thereof when the release film layer 7 is peeled off is colored. The part can be easily found.

In the present embodiment, the case where the release film layer 7 is provided on both surfaces of the double-sided curing board 10 has been described, but the release film layer 7 may be provided only on one surface of the double-sided curing board 10. In this case, the surface on which the release film layer 7 is not provided cannot be reused due to the release of the release film layer 7.

<Embodiment 2>
FIG. 3 is a perspective view of the double-sided curing board 20 according to another embodiment of the present invention. Further, FIG. 4 is a partial view of the end portion of the double-sided curing board 10 of FIG. 3 viewed from the side surface along the arrow 22 of FIG. 3, and FIG. 4 is substantially a cross-sectional view as in FIG. 2 described above. Is. The double-sided curing board 20 of the present embodiment has the same planar shape as the double-sided curing board 10 of FIGS. 1 and 2, but the board material layer 3 is configured by laminating two board materials 3a and 3a. The point that is done is different. Except for this point, the double-sided curing board 20 of the present embodiment is the same as the double-sided curing board 10 of FIGS. 1 and 2, and the corresponding components are designated by the same reference numerals. In the present embodiment, the same board material layers 3 as those in FIG. 1 are used as the board materials 3a and 3a. Therefore, the thickness of the board material layer 3 of the double-sided curing board 20 of the present embodiment is shown in FIG. And it is twice as large as the board material layer 3 in FIG.

When manufacturing the double-sided curing board 20 of the present embodiment, first, the moisture-proof layer 5 and the release film layer 7 are formed on one surface of each of the two board materials 3a and 3a. At that time, the width of each release film layer 7 is made narrower than the width of each moisture-proof layer 5 underneath, so that each moisture-proof layer 5 is exposed along two sides in the longitudinal direction of the double-sided curing board 10. 5a and 5b are present. Next, the double-sided curing board 20 is finally manufactured by laminating the other surfaces of the board materials 3a and 3a, that is, the surfaces on which the moisture-proof layer 5 and the release film layer 7 are not formed. Due to such a configuration of the double-sided curing board 20, the board material layer 3 is thicker than the double-sided curing boards 10 of FIGS. 1 and 2, so that the durability during use is increased and the manufacturing process thereof is simplified. There is.
<Embodiment 3>
FIG. 5 is a perspective view of the double-sided curing board 30 according to another embodiment of the present invention. Further, FIG. 6 is a partial view of the end portion of the double-sided curing board 30 of FIG. 5 viewed from the side surface along the arrow 23 of FIG. 5, and FIG. 6 is substantially a cross-sectional view as in FIG. 2 described above. Is. The double-sided curing board 30 of the present embodiment has the same size and shape as the double-sided curing board 20 of FIGS. 3 and 4, but the upper and lower release film layers of the double-sided curing board 20 of FIGS. 3 and 4 The difference is that another release film layer 8 is provided on the upper layer of 7. The components are the same as those in FIGS. 3 and 4, except that the release film layer 8 is provided, and the corresponding components are designated by the same reference numerals. The adhesive strength and thickness of each of the release film layers 8 and 8 are the same as those of the above-mentioned release film layer 7.

In the double-sided curing board 30 of the present embodiment, as shown in FIG. 5, the width of each of the release film layers 8 and 8 is narrower than the width of the lower release film layer 7 in the width direction of the double-sided curing board 30. Therefore, the area of each of the release film layers 8 and 8 is smaller than the area of each of the release film layers 7 and 7 underneath. Therefore, each of the release film layers 7 and 7 has exposed areas 7a and 7b exposed along the two sides in the longitudinal direction of the double-sided curing board 30, respectively (FIG. 6). With such exposed areas 7a and 7b, when the release film layer 8 is peeled off for reuse, the end portion of the release film layer 8 can be easily found. Further, in the double-sided curing board 30 of the present embodiment, the release film layer 7, the release film layer 8 and the moisture-proof layer 5 are colored in different colors, which makes it easier to end the release film layers 7 and 8. You can find the part. After the release film layer 8 is peeled off, it can be used in the same manner as the double-sided curing board 20 of FIGS. 3 and 4, and further, the release film layer 7 can be peeled off and reused.

In the present embodiment, the case where the two layers of the release film layers 7 and 8 are provided on both sides of the double-sided curing board 30 has been described, but the present invention is not limited to this, and the present invention is not limited to this. It may be provided only, and the number of layers of the release film layer may be increased as needed. In that case, the width of each release film layer is narrower than the release film layer and the moisture-proof layer of the lower layer in either the vertical or horizontal direction of the double-sided curing board 30, and the release film layer or the moisture-proof layer of the lower layer thereof. It is preferable that the exposed area is formed along at least one side of the. Further, it is preferable that the moisture-proof layer 5 and each release film layer are colored in different colors.

In the double-sided curing board 30 of the present embodiment, a structure in which a release film layer 8 is provided on a double-sided curing board 20 (FIGS. 3 and 4) having a board material layer 3 in which two board materials 3a and 3a are bonded together is provided. As described above, the release film layer 8 may be provided on the double-sided curing board 10 (FIGS. 1 and 2) provided with the board material layer 3 made of one board material.

<Embodiment 4>
FIG. 7 is a perspective view of the double-sided curing board 40 according to still another embodiment of the present invention. The double-sided curing board 40 of the present embodiment has the same planar shape as the double-sided curing board 20 of FIGS. 3 and 4, but has a different planar shape from the release film layers 7 and 7 of the double-sided curing board 20. The difference is that the release film layers 9 and 9 are provided. The components other than the release film layers 9 and 9 are the same as those in FIGS. 3 and 4, and the corresponding components are designated by the same reference numerals. The adhesive strength and thickness of each release film layer 9 are the same as those of the release film layer 7.

In the double-sided curing board 40 of the present embodiment, the planar shape of each of the release film layers 9 and 9 is almost the same as that of the respective moisture-proof layers 5 and 5 of the lower layer thereof, but the two corners are missing, and therefore, The area of each of the release film layers 9 and 9 is smaller than that of each of the moisture-proof layers 5 and 5 below it. Due to the shape of the release film layers 9 and 9, triangular exposed areas 5c and 5d are present on the front side and the back side of the double-sided curing board 40, respectively (see also the enlarged portion in FIG. 5). With such exposed areas 5c and 5d, the end portion of the release film layer 9 can be easily found when the release film layers 9 and 9 are peeled off for reuse.
In addition to the double-sided curing board 40 of the present embodiment, when one or two or more further release films are provided on the upper layer of either one or both release film layers 9, the area of each of the further release films is provided. Is preferably smaller than the release film layer below it, and an exposed area is also present in each release film layer. Further, it is preferable that the moisture-proof layer 5 and each release film layer are colored in different colors.

The double-sided curing board 40 of the present embodiment includes a board material layer 3 in which two board materials 3a and 3a are bonded together, but instead, as in the double-sided curing board 10 of FIGS. 1 and 2. It is also possible to use the board material layer 3 made of one board material.

INDUSTRIAL APPLICABILITY The present invention can be used, for example, to cure a floor surface at a construction site or the like, or to protect a truck bed, a house floor surface, or the like when moving.

10, 20, 30, 40 double-sided curing board
2 fold line
3a board material
3 board material layer
5 Moisture-proof layer 5a, 5b, 5c, 5d Exposed area
7a, 7b exposed area
7,8,9 release film layer

Claims (8)

A double-sided curing board that covers and protects the surface to be cured,
A board material layer to maintain strength,
A moisture-proof layer provided on the front side and the back side of the board material layer is provided.
A double-sided curing board characterized in that at least one release film layer is formed on each of the front and back moisture-proof layers. Equipped with two board materials to maintain strength,
A moisture-proof layer is formed on one surface of each of the board materials, and at least one release film layer is further provided on each moisture-proof layer.
The double-sided curing board according to claim 1, wherein the other side of each of the two board materials is bonded to each other to form the board material layer. On either one or both surfaces of the double-sided curing board, the area of the release film layer is smaller than the area of the moisture-proof layer, and the moisture-proof layer has an exposed area at least a part of the peripheral edge portion. The double-sided curing board according to claim 1 or 2, wherein the board is provided. A plurality of the release film layers are provided on either one or both surfaces of the double-sided curing board, and the area of each release film layer is smaller than the area of the release film layer below the release film layer. The double-sided curing board according to any one of claims 1 to 3, wherein the lower release film layer has an exposed area at least a part of the peripheral portion. The planar shape of the double-sided curing board is rectangular, and the width of the release film layer is narrower than the width of the moisture-proof layer in either the vertical or horizontal direction on either one or both surfaces of the double-sided curing board. The double-sided curing board according to claim 3, wherein the exposed area of the moisture-proof layer is formed along at least one side of the moisture-proof layer. The planar shape of the double-sided curing board is rectangular, and the width of the release film layer is narrower than that of the release film layer below the release film layer on either one or both surfaces of the double-sided curing board. The double-sided curing board according to claim 4, wherein the exposed area of the lower release film layer is formed along at least one side of the lower release film layer. The double-sided curing board according to any one of claims 1 to 6, wherein the release film layer is colored in a color different from that of the moisture-proof layer on either one or both surfaces of the double-sided curing board. The double-sided curing board according to claim 5 or 6, wherein the moisture-proof layer and the release film layer are colored in different colors on either one or both surfaces of the double-sided curing board.

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