JP2001078581A - Flowerpot made of paper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a readily producible flowerpot which is a flowerpot made of paper in place of a pottery or a plastic, made of the paper, usable for a relatively long period and having water resistance. SOLUTION: This flowerpot made of paper comprises a wall part 1 constituting the outer periphery thereof, a reinforcing material 3 having a peripheral wall of the shape similar to that of the peripheral wall of the wall part 1 and fitted into the wall part 1 and a bottom 2 having a planar part and plural bent parts 22 bent relatively to the planar part and fixed by nipping the bent parts 22 between the wall part 1 and the peripheral part of the reinforcing part 3. The wall part 1 and the reinforcing part 3 are composed of a paper tube and the flowerpot can be produced by placing a paper material forming the bottom 2 on either one thereof and superimposing the other thereon.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flowerpot made of paper, and more particularly to a flowerpot made of paper that is recyclable and has the strength and water resistance required for the flowerpot.

[0002]

2. Description of the Related Art Pottery and plastic are generally used as materials for flowerpots for ornamental flowering, but paper is being used as a material for flowerpots because paper can be printed as desired and can be recycled.

However, paper has limitations in strength, water resistance and the like, and is mainly used for raising seedlings used for a short period of time. Apart from the use for raising seedlings, various assembled flower pots have also been proposed (JP-A-10-178922). These assembling type flower pots are usually configured such that both ends of a strip-shaped paperboard are attached or a projection is formed at both ends and a mounting hole is combined to form a cylindrical body, and a bottom plate is fitted to the cylindrical body. Therefore, water easily penetrates into the sticking portion and the combined portion, does not endure long-term use in terms of strength and water resistance, and is not a substitute for pottery or plastic.

[0004] In addition, assembling-type flower pots are convenient for storage and transportation in an unused state, but must be assembled at the time of use, and must be limited to personal use.

[0005]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a paper flower pot which can be used as a substitute for pottery or plastic, is easy to manufacture and can be used for a relatively long time, and a method for manufacturing the same. The purpose is to do.

[0006]

In order to solve the above-mentioned problems, the present inventor has studied various materials, and as a result, by using a paper tube formed by winding paper in a multilayer manner, the strength can be improved by a simple method. The present inventors have found that a flower pot having excellent water resistance can be produced, and have reached the present invention.

That is, the paper flowerpot of the present invention has a peripheral wall,
A wall constituting the outer periphery of the flowerpot, and a reinforcing portion having a peripheral wall having the same inclination in the axial direction as the peripheral wall of the wall and having a similar cross-sectional shape orthogonal to the axial direction, and fitting to the wall. , Comprising a bottom fixed to one end of the wall portion or the reinforcing portion, wherein the wall portion, the reinforcing portion and the bottom portion are paper plant pots made entirely of paper, wherein the bottom portion is a flat portion and a flat portion with respect to the flat portion. It has a plurality of bent portions bent, and the bottom is fixed by sandwiching the bent portion between the wall and the peripheral wall of the reinforcing portion.

[0008] The flowerpot having such a configuration is made of a paper material having a continuous peripheral wall, and the cross section of the paper is hardly in contact with the soil. Therefore, the flowerpot has strength and water resistance as compared with a conventional flowerpot made of paper. . In addition, since at least a part of the peripheral wall is reinforced by the reinforcing portion, even greater strength can be obtained.

[0009] In a preferred embodiment, the wall portion and the reinforcing portion are paper tubes. Here, the paper tube is a paper tube base paper (JIS P000
16065) means a multi-layered hollow body, and includes not only a cylindrical shape but also a square shape, an oval shape, and a conical shape. By using such a paper tube, a strong flowerpot can be manufactured.

[0010] In a further preferred aspect, the bottom flat portion has a plurality of cutouts around its periphery. Such a notch functions as a drain hole. The notch can be formed in advance in the material serving as the bottom, and in that case, it is preferable that the notch be formed continuously between the plurality of bent portions. Thereby, when processing the paper material for the bottom part, the drainage hole can be formed at the same time as the formation of the bent part.

In each of the above-described embodiments, it is preferable that a water-resistant coating layer is formed on at least one surface of the wall, the reinforcing portion, and the bottom. As such a water-resistant coating layer, a coating layer of a water-soluble resin is preferable.

Further, a method for manufacturing a paper flower pot according to the present invention is a method for manufacturing a paper flower pot having a cylindrical wall and a bottom fixed to the wall, wherein the first cylindrical member and the first cylindrical member are provided. A second tubular member having a shape at least partially similar to the first tubular member and having an inner circumference slightly larger than the outer circumference of the first tubular member; A planar member having an outer periphery larger than the outer periphery of one end of the member and having a plurality of notches formed radially from the periphery is prepared,
The cylindrical member and the second cylindrical member are overlapped with each other via the flat member, and the second cylindrical member is fitted to the first cylindrical member, and The first cylindrical member is formed by bending at least a part of an outer peripheral portion having a notch and sandwiching between an inner periphery of the second cylindrical member and an outer periphery of the first cylindrical member. This is a method for producing a flowerpot in which the member or the second cylindrical member is a wall and a part of the planar member is a bottom.

According to this method, a flower pot can be manufactured only by an extremely simple process of fitting two tubular members with a flat member therebetween.

Further, by appropriately selecting the heights of the first tubular member and the second tubular member, the position for fixing the bottom portion,
In other words, the height of the raised bottom can be set arbitrarily, and necessary drainage and air permeability of the flowerpot can be provided.

It is preferable that the notch provided in the flat member has a radial length longer than a radial length of the bent portion. The portion longer than the bent portion of the notch serves as a drain hole at the bottom.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a paper flowerpot according to the present invention will be described with reference to the drawings.

FIG. 1 is a view showing a first embodiment of a paper flower pot according to the present invention. This flower pot comprises a cylindrical wall 1 and a bottom 2.
And a reinforcing portion 3 having a function of fitting in the wall portion 1 and fixing the bottom portion 2 to the wall portion 1.

The wall portion 1 and the reinforcing portion 3 are both formed of a cylindrical paper tube. The paper tube is a multi-layered winding of strong size paper called paper tube base paper, and a wall thickness of about 3 to 30 mm can be used. Although there is a paper tube having a diameter of 70 to 500 mm, a paper tube having a diameter of, for example, about 100 to 300 mm can be arbitrarily used depending on the size of the flowerpot. There are two types of paper tubes, flat and spiral. Both types can be used. In the case of a cylindrical paper tube, spiral winding is generally used and is advantageous in strength.

The inner periphery of the paper tube constituting the wall portion 1 has a reinforcing portion 3
Is designed to be larger than the outer circumference of the paper tube constituting the above, and the difference between the inner circumference and the outer circumference is slightly smaller than the thickness of the paperboard forming the bottom portion 2. Thereby, a part of the bottom 2 can be strongly sandwiched between the wall 1 and the reinforcing portion 3, and the bottom 2 can be fixed to the wall 1.

The wall 1 forms the outer periphery of the flower pot, and the height of the wall 1 determines the height of the flower pot. The height of the reinforcement 3 is considerably lower than the wall 1, and the height of the reinforcement 3 determines the position of the bottom 2. That is, the bottom 2 is a raised bottom corresponding to the height of the reinforcing portion 3. By raising the bottom 3 in this manner, the flower pot can be drained well.

The bottom 2 is made of a paperboard, a corrugated cardboard sheet or the like. The bottom part 2 is composed of a substantially circular flat part 21 and a plurality of bent parts 22 bent with respect to the flat part 21, and has a flat shape as shown in FIGS. . That is, the bottom portion 2 is formed by forming a plurality of cutouts 23 in the radial direction from the outer periphery of a circular paperboard, and an outer peripheral portion C where the cutouts 23 are formed (the circumference indicated by a dashed-dotted line A and the dotted line B in the drawing).
(A portion sandwiched between the circumference indicated by a circle) and a plane portion is bent substantially at a right angle. The radial length of the notch 23 is longer than the radial length of the outer peripheral portion C, so that a part of the notch 23 becomes a drainage hole in the plane portion 21.

The shape and number of the bent portions 22 or the notches 23 are not limited to those shown in the drawings, but are shapes that allow the bent portions 22 to bend with respect to the flat portions 21. Various modifications are possible as long as the shape can secure a hole for draining water. Although not shown, a drain hole may be provided at the center of the flat portion 21 similarly to a pot made of pottery or plastic.

It is preferable that the paper material forming the wall portion 1, the bottom portion 2 and the reinforcing portion 3 has a water-resistant coating on at least one side thereof. As the water-resistant coating, a coating layer of a water-soluble resin is preferable. Examples of the water-soluble resin include natural polymer compounds such as casein, albumin and gelatin; water-soluble celluloses such as methylcellulose, carboxymethylcellulose and human doxyethylcellulose; polyethers such as polyethylene glycol and polypropylene glycol; and (meth) acrylic acid. Water-soluble synthetic polymers such as water-soluble acrylic resins such as acrylic polymers and acrylic-styrene copolymers, and water-soluble polybutyral and polyvinyl alcohol. Such a water-soluble resin is easily dissolved in water in a recycling process or the like, so that the paper material can be easily recycled, and no toxic substance is generated even when incinerated.

The water-resistant coating layer is formed by dissolving or dispersing the above-mentioned resin in water or an emulsion of these resins on the surface of a paper material as a raw material before manufacturing a paper tube or a paperboard forming a bottom. It can be formed by applying a known coating method such as bar coating, roll coating, gravure coating, air knife coating, and blade coating. The thickness of the coating layer is not particularly limited, but usually, the coating amount is about 5 to 50 g / m ^{2 in} terms of wet weight.

Next, a method of manufacturing a flowerpot having such a configuration will be described. The flowerpot of the present invention can be manufactured using a usual press. First, as shown in FIG. 3A, a paper tube 30 constituting the reinforcing portion 3 is fixed to a jig of a press machine (not shown), and a flat paperboard 20 shown in FIG. 2 is placed thereon. At this time, the paper tube 30 is made to substantially overlap the circumference of the paperboard 20 indicated by the dotted line B. On the other hand, the paper tube 10 constituting the wall portion 1 is fixed to the press side of the press machine, and pressed onto the paperboard 20. Thereby, the outer peripheral portion C of the paperboard 20 is bent along the circumference of the paper tube 10, that is, along the circumference shown by the dotted line B in FIG. 2, and is press-fitted between the paper tube 10 and the paper tube 30. . Paper core 10 and paper core
By pressing the paper tube 10 until the lower ends of 30 coincide, a flowerpot as shown in FIG. 3B can be manufactured.

It should be noted that an adhesive such as a pressure-sensitive adhesive may be applied to a portion constituting the bent portion of the paperboard 20 before pressing. Thereby, the force for fixing the bottom 2 can be further increased. The adhesive is preferably provided on at least the wall side surface, but may be provided on both surfaces. If necessary, a portion where the wall portion 1 and the reinforcing portion 3 overlap may be caulked.

In the flower pot thus manufactured, the bottom 2
Is a raised bottom corresponding to the height of the reinforcing portion 3, and a plurality of drain holes are formed between the plane portion 21 and the inner periphery of the wall portion 1.
Thereby, drainage and air permeability can be secured. And bottom 2
Is supported by the reinforcing portion 3, so that the bottom does not fall out even if the soil weight is applied.

In this flower pot, there is no seam on the inner periphery of the wall portion 1 in which the soil is put, and the cross section of the paper tube is not in contact with the soil, so that water permeates from the seam or the cross section of the paper tube. And high water resistance is obtained. Further, since the bottom portion 2 is firmly fixed by pressing the bent portion 22 between the wall portion 1 and the reinforcing portion 3, there is no possibility of the bottom portion falling out. In particular, when an adhesive is applied to the bent portion 22, the bottom portion can be further securely fixed.

FIGS. 4 and 5 show a modification of the first embodiment. In the flowerpot shown in FIG. 4, another reinforcing portion 4 is fitted to the upper end of the wall portion 1. This reinforcement part 4
The inner periphery is formed of a paper tube having substantially the same size as the outer periphery of the paper tube 10 constituting the wall portion 1, only a part of the reinforcing portion 4 in the height direction is fitted to the wall portion 1, and the rest is a wall. It protrudes outside the upper end of the part 1. The fixing between the reinforcing portion 4 and the wall portion 1 may be only a simple fitting, but is preferably performed with a water-based adhesive or the like.

In the flowerpot of this configuration, the state surrounding the flowerpot is reinforced by the reinforcing portion 4 and the lower end of the same size and the same size flowerpot can be overlapped on the upper end of the reinforcing portion 4 to improve the convenience in transportation and storage. Can be enhanced. In the illustrated example, the reinforcing portion 4 has a height covering only the vicinity of the upper end of the wall portion 1. However, the reinforcing portion 4 may have a height reaching the vicinity of the reinforcing portion 3 on the lower end side. Can be enhanced.

The flower pot shown in FIG. 5 has a cutout 5 formed at the lower end of the wall portion 1 and the reinforcing portion 3. Thereby, drainage and air permeability can be further improved. The modifications shown in FIGS. 4 and 5 can be implemented in appropriate combinations. In addition, the heights of the wall portion 1 and the reinforcing portions 3 and 4 and the shapes and numbers of the notches 23 and the notches 5 are not limited to those illustrated.
It can be changed arbitrarily.

Next, a second embodiment of the paper flower pot of the present invention will be described.

FIG. 6 is a view showing a second embodiment. The point that this flower pot also comprises a wall portion 1, a bottom portion 2 and a reinforcing portion 3 for fixing the bottom portion 2 is different from the first embodiment. Similarly, the wall portion 1 and the reinforcing portion 3 are both conical, the peripheral walls are formed of the same paper tube with the same inclination with respect to the axis, and the peripheral walls overlap each other in parallel. In this case, the peripheral length of the lower end of the reinforcing portion 3 is longer than the peripheral length of the lower end of the wall portion 1. Therefore, when both are overlapped as shown in the drawing, the lower end of the reinforcing portion 3 is higher than the lower end of the wall portion 1. Located in. The difference in the height direction determines the height of the raised bottom.

The bottom 2 has a flat surface as in the first embodiment.
The flat portion 21 has a notch corresponding to a portion between the adjacent bent portions 22. However, in this embodiment, the bent portion 22 is bent upward along the peripheral wall.

In the flowerpot having such a configuration, as shown in FIG. 7, a paper tube 30 'constituting the reinforcing portion 3 is fixed to a jig of a press machine (not shown), and a paperboard 20' for the bottom portion 2 is placed thereon. Place so that the center of the paper tube and the center of the paperboard are aligned. Next, the paper tube 10 'for the wall 1 is pressed from above, and the paper tube 10' for the wall 1 is reinforced by bending the portion corresponding to the bent portion 22 of the paperboard.
Fit to paper tube 30 '. In this case, since both paper tubes are conical, they can be fitted smoothly.

The paper tube 10 ′ is pressed, and the inner diameter thereof is
When the press advances to a point where it substantially matches the outer diameter of the upper end of 0 ′, the press stops there, and at this point, the bent portion 22 of the bottom 2 is
It is strongly clamped between the inner wall of 0 'and the outer wall of the wall tube 30'. Thereby, a flower pot as shown in FIG. 6 can be manufactured.

In this case, as in the first embodiment, the wall 1
An adhesive may be provided between the bent portion 22 and / or between the bent portion 22 and the reinforcing portion 3.

In the manufacturing method described above, the reinforcing portion 3
The case where the paper tube constituting the wall portion 1 is fixed to the jig and the paper tube constituting the wall portion 1 is pressed has been described. Can be pressed from above.

Like the flowerpot of the first embodiment, the flowerpot of the second embodiment has no seam on the inner periphery of the wall portion 1 in which the soil is placed, and the cross section of the paper tube does not contact the soil. Therefore, water does not permeate through the seam or the cross section of the paper tube, and high water resistance can be obtained. Also, the bottom part 2 is
22 is firmly fixed by being pressed between the wall portion 1 and the reinforcing portion 3, and the peripheral wall of the wall portion 1 and the reinforcing portion 3 has a smaller cross section toward the lower end, so that a strong gripping force is obtained. Can be Therefore, even if the weight of the soil is applied, there is no bottom out.

The bottom can be raised and raised by the difference in diameter between the lower end of the wall 1 and the lower end of the reinforcing portion 3, so that a water-drainable and well-ventilated flowerpot can be obtained. Also in this embodiment, a notch 5 may be provided at the lower end of the wall portion 1 as shown in FIG.

Further, since the flower pots of the second embodiment are conical, they can be easily stacked. Accordingly, it is not necessary to provide the reinforcing portion 4 on the outer periphery of the upper end of the wall portion as shown in FIG. 4 in order to stack them, but a similar reinforcing portion may be provided for decoration or reinforcement.

FIG. 8A shows a modification of the second embodiment.
(B).

In the flowerpot shown in FIG. 2A, the wall portion 1 and the reinforcing portion 3 are both formed of conical paper tubes, but the reinforcing portion 3 is fitted on the outer periphery of the lower end of the wall portion 1. The bottom portion 2 is sandwiched between the outer periphery of the lower end of the wall portion 1 and the inner periphery of the reinforcing portion 3.

This flower pot can be manufactured in exactly the same way as the flower pot of FIG. 6, but can be manufactured with less material than in FIG. However, when the wall portion 1 is lifted with the soil filled, the structure is such that the weight of the soil is supported only by the clamping force between the wall portion 1 and the reinforcing portion 3. Inferior. Therefore, it is preferable to provide an adhesive between the wall portion 1 and the bent portion 22 and / or between the bent portion 22 and the reinforcing portion 3. This flower pot is suitable for a flower pot of a relatively small size.

The flower pot shown in FIG. 8B is provided with a separate reinforcing portion 6 below the bottom 2. In this flowerpot, the bottom portion is reinforced by the reinforcing portion 6 and the bottoming out can be reliably prevented. Further, since the peripheral wall is reinforced by the reinforcing portion 3, the peripheral wall has excellent strength, durability and water resistance.
Therefore, this flower pot is suitable as a relatively large flower pot.

In the case of a flower pot using a conical shape as the wall portion 1 and the reinforcing portion 3, the heights of the wall portion 1 and the reinforcing portion 3 can be appropriately changed without being limited to those shown in the figure. Various forms of flower pots are possible.

In the above embodiment, a case where a cylindrical or conical paper tube is used as the paper material constituting the wall portion 1 and the reinforcing portion 3 has been described. Is also good. Further, since the flowerpot of the present invention is entirely made of paper, it is also possible to provide decorations, advertisement characters, pictures, and the like on the outer periphery of the wall by printing.

Further, it is also possible to form a coating film containing an active ingredient of a fertilizer or an insecticide, if necessary, on a portion inside the flowerpot. Alternatively, a pattern or coloring can be applied to the outside of the flowerpot. Such a coating film or a full-color coating can be formed on the paper material as a raw material in the same manner as the above-mentioned water-resistant coating, and an insecticide or a coloring agent can be added to the coating of the water-resistant coating. It is.

[0049]

As is apparent from the above embodiments, according to the paper flowerpot of the present invention, a flat paperboard having a cylindrical paper material such as a paper tube and having a plurality of cutouts around the paperboard is used. The peripheral part of the flower pot is sandwiched between two cylindrical paper materials to form a bottom, so that a flower pot can be manufactured in an extremely simple manner, and the seams and cross sections of the paper are directly exposed to soil and water. Since the structure is not formed, a paper flower pot excellent in strength and water resistance can be provided. In particular, a durable flowerpot can be provided by applying a water-resistant coating made of a water-soluble resin to at least one surface of paper as a material.

In the flowerpot of the present invention, all the elements are made of paper, so that it can be recycled, and it is possible to print desired patterns and characters as needed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a paper flower pot according to the present invention.

FIGS. 2A and 2B are plan views each showing a shape of a paper material for forming the bottom of the paper flowerpot of the present invention.

3A is a cross-sectional view illustrating a method for manufacturing the flowerpot of FIG. 1, and FIG. 3B is a cross-sectional view of a completed product.

FIG. 4 is a sectional view showing a modification of the first embodiment.

FIG. 5 is a perspective view showing another modification of the first embodiment.

FIG. 6 is a sectional view showing a second embodiment of the paper flower pot of the present invention.

FIG. 7 is a cross-sectional view illustrating a method for manufacturing the flowerpot of FIG. 6;

FIGS. 8A and 8B are cross-sectional views each showing a modification of the second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Wall part 2 ... Bottom part 3 ... Reinforcement part 10, 30 ... Paper core 21 ... Flat part 22 ...・ ・ ・ Bend 23 ・ ・ ・ ・ ・ ・ Notch

Claims (8)

[Claims] 1. A wall constituting an outer periphery of a flower pot, a reinforcing portion having a peripheral wall having a shape similar to the peripheral wall of the wall and fitted to the wall, and one end of the wall or the reinforcing portion. A fixed bottom portion, wherein the wall portion, the reinforcing portion and the bottom portion are a paper flowerpot made entirely of paper, wherein the bottom portion has a flat portion and a plurality of bent portions bent with respect to the flat portion, A paper flower pot, wherein the bottom portion is fixed by sandwiching the bent portion between a wall portion and a peripheral wall of the reinforcing portion. 2. The paper pot according to claim 1, wherein said wall and said reinforcing portion are paper tubes. 3. The paper flower pot according to claim 1, wherein the flat portion of the bottom has a plurality of cutouts around the flat portion. 4. The paper pot according to claim 3, wherein said notch is formed continuously between said plurality of bent portions. 5. The paper flower pot according to claim 1, wherein the wall, the reinforcing portion, and the bottom have a water-resistant coating layer formed on at least one surface. 6. A method for manufacturing a paper flower pot having a cylindrical wall and a bottom fixed to said wall, comprising: a first cylindrical member; and at least one first cylindrical member. A second tubular member having a partially similar shape and an inner periphery slightly larger than the outer periphery of the first tubular member, and an outer periphery larger than the outer periphery of one end of the first tubular member. A planar member having a plurality of notches in a radial direction from the periphery is prepared, and the first cylindrical member and the second cylindrical member are overlapped with each other via the planar member. , The second cylindrical member is connected to the first cylindrical member.
At the same time as fitting into the cylindrical member, at least a part of the outer peripheral portion where the notch of the planar member is formed is bent so that the inner periphery of the second cylindrical member and the first cylindrical member are bent. A method for manufacturing a flowerpot in which the first tubular member or the second tubular member is a wall and a part of the planar member is a bottom by being sandwiched between outer peripheral portions. 7. The first and second cylindrical members are cylindrical,
7. The method according to claim 6, wherein the shape is prismatic or conical. 8. The method according to claim 6, wherein the notch has a radial length longer than a radial length of the bent portion.