JP5235513B2 - Paper cylinder container - Google Patents

Description

The present invention relates to a paper tubular container suitable for containing foods, medicines and other articles therein.

As a conventional example of a paper cylindrical container that accommodates foods, medicines, and other articles inside, there is, for example, the one shown in FIG. FIG. 16 is a cross-sectional view showing a configuration in which a lid is attached to a cylindrical body of a conventional paper cylindrical container. The paper cylindrical container shown in FIG. 16 is attached to and detached from a cylindrical main body 201 as a bottomed cylindrical paper container main body and a ring-shaped portion 202 formed so as to surround an opening 203 at the upper end of the cylindrical main body 201. A tightening ring that attaches and closes the opening 203 and clamps and fixes the paper cover 204 between the ring-shaped portion 202 and the edge of the cover 204, and maintains the airtightness in the cylindrical main body 201. 205. In addition, although the lower end opening of the cylindrical main body 201 is sealed with a bottom plate made of paper, illustration is omitted.
JP 2003-237760 A

In many cases, a plurality of paper cylindrical containers having such a configuration are handled, and for storage, transportation, display, etc., it is preferable to stack in the height direction because space can be used effectively. However, in the configuration of the conventional paper tube-type container, even if temporary stacking is possible, it is not stable, and may be broken even by slight vibration, which is inconvenient to handle.

SUMMARY OF THE INVENTION An object of the present invention is to provide a paper cylindrical container having a configuration in which a plurality of sheets can be stacked in the height direction.

In order to solve the above-mentioned problems, a paper cylinder container according to the present invention is made of a disk-shaped paper on the lower opening edge 5a of a paper cylinder 1 having an upper opening 2 and a lower opening 5. A container body made of a bottomed cylindrical body is formed by adhering a bottom plate, and is covered with an upper opening 2 of the cylindrical body 1 serving as the container body. The cylindrical body 1 serving as the container body is formed with an annular convex portion 7b projecting downward, the lid 11 is formed with an annular concave groove portion 11b, and a plurality of paper cylindrical containers are arranged. In the state of stacking in the height direction, in the paper tube-shaped container that makes it possible to fit the convex portion 7b protruding downward of the paper tube-shaped container stacked in the concave groove portion 11b of the lid 11, The upper opening 2 of the cylindrical body 1 as the container body is wound around the upper opening edge 2a and its vicinity. The ring-shaped portion 4 is formed by bending and deforming, and the lower opening 5 of the cylindrical body 1 as the container body is formed by bending and deforming the lower opening edge 5a and its vicinity inward of the cylindrical body 1. A bent portion 7 is formed, and the bent portion 7 is a ring-shaped convex portion 7b protruding downward, and a tip end portion bent toward the central axis 1a in a plane substantially perpendicular to the central axis 1a of the cylindrical body 1 7a, and the front end 7a of the bent portion 7 is bonded by being sandwiched from above and below by the disk-shaped bottom plate made of the bottom upper plate 8 and the bottom lower plate 9, and crimped to have a bottom. The container body is formed of a cylindrical body, and the lid 11 is formed on the ring-shaped portion 4 of the cylindrical body 1 serving as the container body from the outside and on the inner side of the upper opening edge 2 a of the cylindrical body 1. The annular groove 11b provided in the vicinity of The convex portion 7b that is formed by pressing thick paper so that it protrudes downward and protrudes downward corresponds to the shape of the concave groove portion 11b of the lid 11, and the convex portion 7b is placed in the concave groove portion 11b. It is possible to fit and hold a plurality of paper cylindrical containers .

In the paper tube container of the present invention, the bent portion 7 is formed in the lower opening 5 of the cylindrical body 1 as the container main body, and the notch 6 is formed in the lower opening edge 5a of the cylindrical body 1 and its vicinity. The notches 6 are bent inward and deformed.

Further, the paper tubular container of the present invention is formed by forming the bent portion 7 in the lower opening 5 of the cylindrical body 1 as the container body, and forming the lower opening edge portion 5a of the cylindrical body 1 and the vicinity thereof on the molding apparatus 40. The mold 41 is deformed by being sandwiched between the lower mold 42 and molded.

Further, the paper cylindrical container of the present invention is formed by bonding the paper bottom plate composed of the bottom upper plate 8 and the bottom lower plate 9 to the bent portion 7 in the lower opening 5 of the cylindrical body 1 as the container body. The top end portion 7a is crimped by the bottom upper plate 8 and the bottom lower plate 9 so as to be sandwiched between the upper mold 51 and the lower mold 52 of the press device 50.

According to the present invention, it is possible to stack a plurality of paper tubular containers suitable for containing food, medicines and other articles in the height direction.

Hereinafter, a paper tube container according to an embodiment of the present invention will be described in detail with reference to the drawings.
First, an outline of the manufacturing process of the paper tube container will be described with reference to FIG. FIG. 1 is a diagram schematically showing a manufacturing process of a paper tube container according to the present embodiment. In addition, manufacture of a paper cylinder container can also be performed in order other than the order shown in FIG.

In order to manufacture a paper cylindrical container, first, a cylindrical body 1 is formed by winding a paper material, for example, roll-shaped kraft paper around a mold roller (FIG. 1A). Since this process is well-known, illustration and detailed description are abbreviate | omitted. Next, an adhesive tape 3 such as a craft tape or a gum tape is attached to the opening edge (hereinafter referred to as the upper opening edge) 2a of the upper opening 2 of the cylindrical body 1 (tubular body) and the inner and outer peripheral surfaces of the vicinity thereof. (FIG. 1 (B)).

Next, an inverted V-shaped cut 6 is made in the opening edge (hereinafter referred to as the lower opening edge) 5a of the lower opening 5 of the cylindrical body 1 and the vicinity thereof (FIG. 1C). Next, the notch 6 is bent inward of the cylindrical body 1 to form a bent portion 7 (FIG. 1D). The bent portion 7 includes a convex portion 7b that protrudes downward, and a tip portion 7a that is further bent toward the central axis 1a in a plane substantially perpendicular to the central axis 1a of the cylindrical body 1. Further, the disk-like bottom upper plate 8 and bottom lower plate 9 (each made of paperboard, for example) are bonded and pressure-bonded so as to sandwich the tip 7a of the bent portion 7 from above and below (FIG. 1D).

On the other hand, the vicinity part with the upper opening edge part 2a which stuck the adhesive tape 3 is bent by the outer winding, and the ring-shaped part 4 is formed (FIG.1 (D)).
A separately manufactured lid 11 is placed on the bottomed cylindrical container body formed in this way (FIG. 1E). Thereafter, a tightening ring 12 (attachment member) having a U-shaped cross section is fitted and the upper opening 2 is closed to form a cylindrical container (paper cylindrical container) (FIG. 1E).
Hereinafter, each manufacturing process and the structure of a paper cylinder container will be described in detail.

With reference to FIGS. 2-6, the sticking process (FIG. 1 (B)) of the adhesive tape 3 to the cylindrical body 1 is demonstrated.
FIG. 2 is a side view of the upper opening edge 2a of the cylindrical body 1 and a configuration of the adhering device 20 for adhering the adhesive tape 3 to the vicinity thereof as shown in FIG. It is. FIG. 3 is a view of the internal configuration of the sticking apparatus 20 shown in FIG. 2 as viewed from above.

As shown in FIG. 2, the sticking device 20 has support columns 22, 22 standing on the upper side of the base 21, a lifting base 23 disposed on the upper surface of the base 21, and a supply device 24 for the adhesive tape 3 above it. Is provided. The lifting platform 23 can be moved up and down by being guided by the column 22, and the cylindrical body 1 can be placed on the upper surface of the lifting platform 23.

In this sticking device 20, the upper opening edge 2 a of the cylindrical body 1 is placed on the upper surface of the lifting platform 23 in a state where the upper opening edge 2 a is positioned upward, and the lifting platform 23 is lifted, whereby a two-dot chain line in FIG. As shown, the adhesive tape 3 is attached to the inner peripheral surface of the upper opening edge 2a and its vicinity by the supply device 24 of the adhesive tape 3.

The supply device 24 for the adhesive tape 3 includes a supply unit 25 for the adhesive tape 3 and a multi-stage roller device 26 for attaching the adhesive tape 3 supplied from the supply unit 25 to the upper opening edge 2a of the cylindrical body 1. is there. As shown in FIG. 3, the supply part 25 of the adhesive tape 3 holds the adhesive tape 3 (for example, craft tape) wound inside in a roll shape, and points this adhesive tape 3 toward the cylindrical body 1 with an arrow. Can be supplied in the B direction. The supply unit 25 includes a rotation lever 27 that can swing in the direction of arrow C, and a cutter 28 is disposed between the rotation lever 27 and the multi-stage roller device 26 as means for cutting the adhesive tape 3.

As shown in FIG. 3, the multi-stage roller device 26 includes first to ninth roller devices 29 a to 29 i arranged along the upper opening edge 2 a of the cylindrical body 1 supported on the lifting platform 23. Of these nine roller devices 29a to 29i, the first roller device 29a located closest to the supply unit 25 is composed of a pair of rollers 30a and 30b. The roller pairs 30a and 30b are indicated by arrows in the figure. It is movable in the approaching / separating direction. On the other hand, the ninth roller device 29i located farthest from the supply unit 25 is also composed of a pair of rollers 31a and 31b, and this pair of rollers 31a and 31b can also move in the contact / separation direction as indicated by arrows in the figure. It is as.

Next, with reference to FIGS. 4 to 6, the operation of attaching the adhesive tape 3 to the upper opening edge 2 a of the cylindrical body 1 will be described. Here, FIG. 4 is a longitudinal sectional view showing the structure of the roller pair 30a, 30b and the relationship with the cylindrical body 1. FIG. The roller pairs 31a and 31b also have the same structure and the relationship with the cylindrical body 1 as the roller pairs 30a and 30b. 5A and 5B are diagrams showing the internal configuration of the supply portion 25 of the adhesive tape 3, wherein FIG. 5A is a view showing a state where the rotating lever 27 is separated from the adhesive tape 3, and FIG. It is a figure which shows the state pressed on the adhesive tape. 6 is an enlarged cross-sectional view (A) of a portion of the third roller device 29c, an enlarged cross-sectional view (B) of the fifth roller device 29e, an enlarged cross-sectional view (C) of a portion of the seventh roller device 29g, It is an expanded sectional view (D) of the site | part of the roller apparatus 29i.

First, as shown in FIG. 2, the cylindrical body 1 is placed on the lifting platform 23, and in that state, the lifting platform 23 is raised to a predetermined position (a state indicated by a two-dot chain line in FIG. 2). Thereafter, the rotary lever 27 (FIG. 5A) that has been separated from the cylindrical body 1 is swung to the cylindrical body 1 side, and the tip of the adhesive tape 3 fed out in the direction of arrow B in FIG. Is pressed against the outside of the upper opening edge 2a (FIG. 5B). Subsequently, the rollers 30a, 30b, 31a, 31b of the first roller device 29a and the ninth roller device 29i are slid in the directions close to each other, and the upper opening edge portion 2a of the cylindrical body 1 by the rollers 30a to 31b. Then, the rollers 30a to 31b are rotationally driven with a portion in the vicinity thereof interposed therebetween. The driving means for each of the rollers 30a to 31b is not shown, but any known means may be adopted as appropriate. Moreover, it is not necessary to drive all the rollers 30a to 31b, and one side may be a driving side and the other may be a driven side.

Then, since the cylindrical body 1 rotates around the center 0 in the direction of arrow D in FIG. 3, the adhesive tape 3 pressed against the outer peripheral surface of the upper opening edge 2 a of the cylindrical body 1 by the rotating lever 27 is the cylindrical body 1. The first roller device 29a is first fed between the rollers 30a and 30b, and in this state, is bonded to the upper opening edge 2a of the cylindrical body 1 and the outer peripheral surface of the vicinity thereof (FIG. 4). ). At this time, it is necessary to adjust the feeding position so that the lower half of the adhesive tape 3 adheres to the cylindrical body 1 in the width direction. Further, during the sticking operation of the adhesive tape 3, the rotating lever 27 is maintained in a state of being in sliding contact with the outer peripheral surface of the cylindrical body 1 (FIG. 5B).

Next, by the second roller device 29b and the third roller device 29c, the upper half in the width direction of the adhesive tape 3 is folded along the upper opening edge 2a (FIG. 6A), and the fourth roller device 29d, The upper half of the folded adhesive tape 3 is folded by the fifth roller device 29e so as to face the bottom of the cylindrical body 1 (FIG. 6B). Furthermore, the upper half of the folded adhesive tape 3 is bent inside the upper opening edge 2a of the cylindrical body 1 by the sixth roller device 29f, the seventh roller device 29g, and the eighth roller device 29h (FIG. 6C). ) The upper half of the adhesive tape 3 that is bent is pasted to the inner peripheral surface of the upper opening edge 2a of the cylindrical body 1 by the roller pair 31a, 31b of the ninth roller device 29i (FIG. 6D). That is, the adhesive tape 3 is adhered over the entire circumference of the upper opening edge 2a and the vicinity thereof while the cylinder 1 is rotated once.

Thereafter, the rotating lever 27 slidably in contact with the outer peripheral surface of the cylindrical body 1 is swung and separated (FIG. 5A), and the cylindrical body 1 is slightly rotated in the direction of the arrow D so that the adhesive tape 3 is moved to the first roller. Tension is applied so as to be pulled between the device 29a and the supply unit 25, and in this state, the adhesive tape 3 is cut by the cutter 28, and the attaching operation of the adhesive tape 3 to the upper opening edge 2a is completed.

Next, the process of forming the bent portion 7 in the lower opening 5 (FIG. 1D) and the configuration of the bent portion 7 will be described with reference to FIGS. FIG. 7 is a side view showing a state in which the cylindrical body 1 is mounted on the molding apparatus 40 that forms the bent portion 7 by deforming the lower opening edge 5a of the cylindrical body 1 and its vicinity. FIG. 8 is a side view showing a state in which molding is performed by being sandwiched between the upper mold 41 and the lower mold 42 of the mold apparatus 40. FIG. 9 is a side view showing a state in which the bottom upper plate 8 and the bottom lower plate 9 are bonded so that the front end portion 7a of the bent portion 7 is sandwiched from above and below by the gluing press device 50.

The mold apparatus 40 includes an upper mold 41 and a lower mold 42. The lower surface 41s of the upper mold 41 has a substantially circular planar shape, and an annular first groove portion 41a is formed along the outer periphery. In addition, an annular second groove 41b is formed on the lower surface 41s of the upper mold 41 on the center side of the first groove 41a.

On the other hand, the upper surface 42s of the lower mold 42 has a substantially circular planar shape, and an annular first protrusion 42a protruding upward is formed on the outer periphery thereof. Further, an annular second protrusion 42b is formed on the upper surface 42s of the lower mold 42 closer to the center than the first protrusion 42a.

In addition, a heater (not shown) is incorporated in at least one of the upper mold 41 and the lower mold 42. The heater is preferably an electric heater, but may be other.

The first protrusion 42 a of the lower mold 42 has a shape corresponding to the convex portion 7 b formed on the lower opening edge 5 a of the cylindrical body 1. The first groove 41a of the upper mold 41 has a shape in which the first protrusion 42a can be fitted. The second protrusion 42b of the lower mold 42 is formed at a position corresponding to the design shape of the tip 7a. The second groove 41b of the upper mold 41 has a shape that allows the second protrusion 42b to be fitted at a position corresponding to the second protrusion 42b when the first protrusion 42a is fitted to the first groove 41a. Provided.

In forming the bent portion 7, first, the cylindrical body 1 is set on the lower die 42 so that the lower opening edge 5a is on the upper side, that is, on the upper die 41 side (FIG. 7). At this time, the lower opening edge portion 5a and the vicinity thereof protrude toward the upper mold 41 side from the first protrusion portion 42a. The protruding portion includes all of the cuts 6, but it is preferable to protrude up to a portion where the cuts 6 are not provided. Further, as shown in FIG. 7, it is preferable to bend the protruding portion toward the center of the lower mold 42 because the bent portion 7 can be easily formed.

The bottom upper plate 8 and the bottom lower plate 9 are bonded to the bent portion 7 formed in this way using a press device 50 (FIG. 9). The press device 50 includes an upper die 51 and a lower die 52. The upper surface 52 s of the lower mold 52 has a planar disk shape having an outer diameter that substantially matches the inner diameter of the cylindrical body 1 in which the bent portion 7 is formed. On the other hand, the lower surface 51s of the upper mold 51 has an outer diameter smaller than that of the convex portion 7b, and the annular outer peripheral side portion 51a has a thinner shape than the central side portion 51b corresponding to the shape of the distal end portion 7a. Yes. The upper mold 51 and the lower mold 52 having such a shape apply a predetermined pressure and are heated by a built-in heater (not shown), so as to sandwich the tip 7a of the bent portion 7 so as to sandwich the tip 7a. The bottom upper plate 8 and the bottom bottom plate 9 are respectively bonded to the bent portions 7 and pressed to close the lower opening 5 (FIG. 9).

In addition, the convex part 7b can be made into arbitrary cross-sectional shapes not only in the curved cross-sectional shape as shown in FIG. Further, the bent portion 7 may be bent a plurality of times to provide a plurality of annular convex portions. Furthermore, when the bottom upper plate 8 and the bottom bottom plate 9 are bonded to the bent portion 7, respectively, a paper material or an adhesive may be filled in the convex portion 7b.

Next, with reference to FIGS. 10 to 12, the step of forming the ring-shaped portion 4 in the upper opening 2 (FIG. 1D) and the configuration of the ring-shaped portion 4 will be described.
FIG. 10 is a perspective view showing a mold apparatus 60 for forming the ring-shaped portion 4 by deforming the upper opening edge 2a of the cylindrical body 1 and the vicinity thereof. FIG. 11 is a partially enlarged longitudinal sectional view of the mold apparatus 60 shown in FIG. FIG. 12 is an enlarged vertical cross-sectional view of a main part of the mold apparatus 60 in a molded state.

As shown in FIG. 10, the mold apparatus 60 includes a fixed mold 62 fixed on a base plate 61 and a movable mold 63 positioned so as to sandwich the fixed mold 62 facing each other. As can be seen from FIG. 11, the fixed mold 62 has a tapered shape so that the distal end portion 64 of the portion to be fitted into the upper opening 2 of the cylindrical body 1 can be smoothly inserted into the cylindrical body 1 from the upper opening 2. The base 65 has a thin right cylindrical shape. However, the base 65 may also be tapered. Further, an annular groove 66 is formed in the base portion of the base portion 65 of the fixed die 62 so as to have a substantially semicircular cross-sectional shape, and a guide surface when the movable die 63 is slid further outside. 67 is provided.

An annular recess 68 is formed on the lower surface side of the fixed mold 62, and a heater 69 for heating is disposed in the recess 68 so that the vicinity of the annular groove 66 of the fixed mold 62 can be particularly warmed. It is. The heater 69 is preferably an electric heater, but may be other.

On the other hand, the movable mold 63 is arranged so as to be able to contact and separate from the fixed mold 62 by a pair of rails 70, 70 provided on the base 61. At the end of the movable die 63 facing the fixed die 62, a concave portion 71 having a circular sectional shape of about a quarter is formed on the lower surface side in an annular shape. The driving means of the movable die 63 is not shown or described, but known means may be adopted as appropriate.

Next, an operation of forming the ring-shaped portion 4 on the upper opening edge 2a to which the adhesive tape 3 is attached will be described.
First, the cylindrical body 1 with the adhesive tape 3 attached to the upper opening edge 2a is turned over so that the upper opening edge 2a faces down, and is positioned on the fixed mold 62 of the mold apparatus 60, so that an appropriate force is applied. Then, the top end 64 of the fixed mold 62 is pressed into the upper opening 2. FIG. 11 shows this state. At this time, the movable mold 63 is slightly separated from the fixed mold 62. The heater 69 is energized to heat the fixed mold 62.

Then, the upper opening edge 2 a of the cylindrical body 1 and the vicinity thereof are pushed and expanded according to the taper shape of the tip 64 of the fixed mold 62. The expanded upper opening edge 2 a enters the annular groove 66 as it is, and bends outward along the semicircular inner wall surface of the annular groove 66. Finally, it protrudes outward from the annular groove 66.

In this state, the movable die 63 is driven to approach the fixed die 62, the upper opening edge 2a is pushed back toward the cylindrical body 1 at the tip, and the upper opening edge 2a and its immediate vicinity are further depressed by the recess 71. Bend to round. FIG. 12 shows this state. In the state of FIG. 12, it is preferable that a slight gap be formed between the tip of the movable die 63 and the outer peripheral surface of the cylindrical body 1. In the experiments conducted by the inventors of the present application, a paper material usually used for a paper cylindrical container called a fiber drum is used, and the height H of the ring-shaped portion 4 is set to 10 mm. For example, when the gap C is about 0.5 mm, the ring-shaped portion 4 is accurately formed with a height H of about ± 0.5 mm, and the tip of the movable die 63 may damage the cylindrical body 1. The production yield was improved.

Next, the manufacturing process of the lid 11 and the configuration of the lid 11 will be described with reference to FIGS. 13 and 14.
FIG. 13 is a longitudinal sectional view showing a process for forming the lid 11. FIG. 14 is a longitudinal sectional view showing the configuration of the formed lid 11.

The lid 11 of the present embodiment includes a substantially semicircular flange portion 11a that covers the ring-shaped portion 4 of the cylindrical body 1 from the outside, and an annular concave groove portion 11b that is positioned in the vicinity of the inner side of the upper opening edge 2a of the cylindrical body 1. And having. The concave groove portion 11 b has a shape that can fit the convex portion 7 b of the bent portion 7. Moreover, the concave groove part 11b and the convex part 7b are arrange | positioned in the position corresponding when a paper cylinder type container is loaded in the height direction.

For the lid 11, for example, a thick paper (referred to as drum base paper or the like) 90 having a thickness of about 0.3 to 0.7 mm is prepared, and this is divided into an upper mold 91 and a lower mold 92 as shown in FIG. For example, the above-described flange 11a, groove 11b and other concavo-convex cross-sectional shapes are formed by performing drawing processing by repeating pressing 5-6 times at a temperature of 60 to 110 ° C., for example. The concave groove portion 11b is formed by pressing the protruding portion 91a of the upper die 91 into the groove portion 92a of the lower die 92 having a shape corresponding thereto.

The cylindrical body 1 having the ring-shaped portion 4 and the bent portion 7 is covered with a lid 11, and further, a fastening ring 12 is fitted to close the upper opening 2 to complete a paper cylindrical container (FIG. 1E). ).

FIG. 15 is a side view showing a state in which the paper cylindrical containers formed as described above are stacked in the height direction.
A bent portion 7 having a convex portion 7b protruding downward in a ring shape is formed at the lower portion of the cylindrical body 1, and a concave groove portion 11b is formed at a position corresponding to the convex portion 7b on the lid 11. Furthermore, since the convex portion 7b has a shape corresponding to the shape of the concave groove portion 11b, the convex portion 7b can be fitted into the concave groove portion 11b. This makes it possible to load and hold a plurality of paper tube containers in a stable state, and improve handling in storage, transport, display, and other situations.

Here, the shape of the convex part 7b and the concave groove part 11b can be arbitrarily set so that it can be stably stacked according to the configuration of the paper tube container, the weight of the contents, and other conditions.

Further, for example, when a protrusion is provided on the outer surface of the convex portion 7b and a concave portion is provided at a position corresponding to the protrusion of the convex portion 7b on the inner surface of the concave groove portion 11b, and the protrusion is fitted into the concave portion, This is preferable because the holding power of the is improved.

Furthermore, a protrusion is provided on the outer surface of the protrusion 7b, and a protrusion is provided at a position corresponding to the protrusion of the protrusion 7b on the inner surface of the groove 11b. When the protrusion 7b is pushed into the groove 11b, the protrusion If the projections 7b get over the projections in the groove 11b, the holding force during loading can be improved by the contact of these projections.

Moreover, in the said embodiment, although the convex part 7b which protrudes below in the cylindrical body 1 was formed in the cover 11, the recessed groove part 11b dented downward is formed, respectively, instead of this or in addition to this, The cylindrical body 1 may be provided with a concave groove portion that is recessed upward, and a convex portion that protrudes upward may be formed on the lid 11 so as to correspond to the concave groove portion.

Although the present invention has been described with reference to the above embodiment, the present invention is not limited to the above embodiment, and can be improved or changed within the scope of the purpose of the improvement or the idea of the present invention.

As described above, the paper tubular container according to the present invention is suitable for a container that often handles a plurality or a large number.

It is a figure which shows roughly the manufacturing process of the paper cylindrical container which concerns on embodiment of this invention. It is a side view which cuts off part of the structure of the sticking apparatus which sticks an adhesive tape to the upper opening edge part of the cylindrical body which concerns on embodiment of this invention, and its vicinity site | part. It is the figure which looked at the internal structure of the sticking apparatus 20 shown in FIG. 2 from upper direction. It is a longitudinal cross-sectional view shown about the structure of the roller pair which concerns on embodiment of this invention, and the relationship with a cylindrical body. It is a figure which shows the internal structure of the supply part of an adhesive tape, (A) is a figure which shows the state which spaced apart the rotation lever from an adhesive tape, (B) is a figure which shows the state which pressed the rotation lever against the adhesive tape. It is. Enlarged sectional view (A) of the part of the third roller device, Enlarged sectional view of the part of the fifth roller device (B), Enlarged sectional view of the part of the seventh roller device (C), Enlarged cross section of the part of the ninth roller device It is a figure (D). It is a side view which shows the state which mounted | wore the shaping | molding die apparatus which deform | transforms the lower opening edge part of the cylindrical body which concerns on embodiment of this invention, and its vicinity site | part, and forms a bending part. It is a side view which shows the state currently shape | molded by pinching with the upper mold | type and lower mold | type of the shaping | molding die apparatus of FIG. It is a side view which shows the state which adhere | attached the bottom upper board and the bottom lower board so that the front-end | tip part of a bending part may be pinched | interposed from the upper and lower sides by the gluing press apparatus. It is a perspective view which shows the shaping | molding die apparatus which deform | transforms the upper opening edge part of the cylindrical body which concerns on embodiment of this invention, and its vicinity site | part, and forms a ring-shaped part. FIG. 8 is a partially enlarged longitudinal sectional view of the mold apparatus shown in FIG. 7. It is a principal part expansion longitudinal cross-sectional view of the shaping | molding die apparatus in a shaping | molding state. It is a longitudinal cross-sectional view which shows the process formation process of a lid | cover. It is a longitudinal cross-sectional view which shows the structure of the formed lid | cover. It is a side view which shows the state which loads a paper cylinder container in a height direction. It is sectional drawing which shows the structure of the state with which the lid | cover was mounted | worn with the cylindrical body of the conventional paper-made cylindrical containers.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cylindrical body 1a Center axis | shaft 2 Upper opening 2a Upper opening edge part 3 Adhesive tape 4 Ring-shaped part 5 Lower opening 5a Lower opening edge part 6 Cutting 7 Bending part 7a Tip part 7b Convex part 8 Bottom upper board 9 Bottom lower board 11 Cover 11a Flange 11b Concave groove 12 Tightening ring (mounting member)
20 Adhering device 40 Mold device 41 Upper die 41a First groove portion 41b Second groove portion 41s Lower surface 42 Lower die 42a First protrusion portion 42b Second protrusion portion 42s Upper surface 50 Press device 51 Upper die 52 Lower die 60 Mold device 62 Fixed mold 63 Movable mold 66 Annular groove 67 Guide surface 68 Recess 69 Heater 90 Cardboard 91 Upper mold 91a Projection 92 Lower mold 92a Groove

Claims (4)

A paper bottom plate made of a disk is bonded to a lower opening edge 5a of a paper cylinder 1 having an upper opening 2 and a lower opening 5 to form a container body made of a bottomed cylinder, A paper tube-shaped container comprising a paper lid 11 that covers and is attached to cover the upper opening 2 of the cylindrical body 1 as a container body;
On the lower part of the cylindrical body 1 as the container main body, an annular convex portion 7b protruding downward is formed, and on the lid 11, an annular concave groove portion 11b is formed, and a plurality of paper cylindrical containers are heightened. In a state of stacking in the direction, in the paper tube-shaped container that makes it possible to fit the protruding portion 7b protruding downward of the paper tube-shaped container stacked in the groove 11b of the lid 11,
The upper opening 2 of the cylindrical body 1 as the container body is formed by bending the upper opening edge 2a and its vicinity in an outer winding and deforming it to form a ring-shaped portion 4,
The lower opening 5 of the cylindrical body 1 as the container body is formed by bending and deforming the lower opening edge 5a and the vicinity thereof to the inside of the cylindrical body 1 to form a bent portion 7, and the bent portion 7 is annular and downward. And a tip portion 7a bent toward the center axis 1a in a plane substantially perpendicular to the center axis 1a of the cylindrical body 1. The tip portion 7a of the bent portion 7 is From the disk shape consisting of the upper plate 8 and the bottom lower plate 9 are bonded so as to be sandwiched from above and below by a paper bottom plate, and are crimped to form a container body consisting of a bottomed cylindrical body,
On the other hand, the lid 11 has a substantially semi-circular flange portion 11a that covers the ring-shaped portion 4 of the cylindrical body 1 as a container body from the outside, and the annular portion that is located in the vicinity of the inside of the upper opening edge 2a of the cylindrical body 1. The cardboard is pressed and formed so as to have a concave groove 11b of
A convex portion 7b that protrudes downward in an annular shape of the paper cylinder container to be loaded corresponds to the shape of the concave groove portion 11b of the lid 11, and the convex portion 7b is fitted into the concave groove portion 11b, so that a plurality of paper cylindrical containers are provided. A paper cylindrical container that can be loaded and held. The formation of the bent portion 7 in the lower opening 5 of the cylindrical body 1 as the container body is made by forming a cut 6 at the lower opening edge 5a of the cylindrical body 1 and the vicinity thereof, and bending and deforming the cut 6 inward. The paper cylinder container according to claim 1 to be performed. The bent portion 7 is formed in the lower opening 5 of the cylindrical body 1 as a container body by sandwiching the lower opening edge portion 5a of the cylindrical body 1 and the vicinity thereof between the upper mold 41 and the lower mold 42 of the molding apparatus 40. The paper cylinder-type container according to claim 1, which is deformed and molded. Adhesion of the paper bottom plate composed of the bottom upper plate 8 and the bottom lower plate 9 to the bent portion 7 in the lower opening 5 of the cylindrical body 1 as the container body is performed by connecting the front end portion 7a of the bent portion 7 to the bottom upper plate 8 and the bottom lower plate. The paper tube container according to claim 1, wherein the paper cylinder container 9 is press-bonded so as to be sandwiched between the upper mold 51 and the lower mold 52.

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