JPH08324570A - Bellows-form container - Google Patents

Abstract

PURPOSE: To provide a bellows-form container which can be stored and carried in a non-bulky state, and make the residual quantity of a content extremely small after usage by providing a nozzle part by which a content is charged or discharged, a stretchable bellows part, and a bottom part which sinks inside with a width of one ridge part of the bellows or more, and functions as a piston. CONSTITUTION: When a content is to be poured in a nozzle part 1, a bellows part 2 stretches, and the content is housed under a stretched state. When the product after the charging is used, the container is compressed from the direction of a bottom part 3, or by a suction from the nozzle part, the bellows part 2 contracts, and the content is discharged. Also, during a usage, the tapered bottom part 3 which becomes narrower toward a bottom plate part 13 sinks and functions as a piston, and the bottom part 3 sinks in the bellows part 2 under a compressed state, after the usage, and the residual quantity of the content become extremely small. By compressing the bellows part 2 under a non-charged state, the shape can be kept, and the product can be stacked and stored or carried without becoming bulky.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention fills semi-kneaded contents such as mayonnaise, facial cleansing cream, and machine grease.
The present invention relates to a bellows container including a discharging nozzle portion, a stretchable bellows portion, and a bottom portion.

[0002]

2. Description of the Related Art A conventional bellows container containing semi-kneaded contents has a flat bellows bottom as shown in FIG.

[0003]

Therefore, even if the contents are discharged and the bellows is contracted to the minimum by the work of pushing or sucking, as shown in FIG. 17, due to the overlap of the bellows, a certain space is left inside the container. It was possible and the rest of it was unusable. Further, in order to reduce the remaining amount, when the bellows container main body and the bottom part are composed of two-point parts that are separately molded, if the bottom part is integrated with the container main body by a method such as ultrasonic welding by secondary processing, Occurrence of leakage of contents from the welded portion becomes a problem. Also in terms of cost, the cost is increased because of the secondary processing cost.

[0004]

Therefore, according to the present invention, there is provided a nozzle portion for filling and discharging contents, and a bellows portion which is expandable and contractible.
An object of the present invention is to provide a bellows container having a bottom portion that is depressed inward with a width of one bellows or more and functions as a piston. Further, the present invention is to provide a bellows container characterized in that, in the above-mentioned bellows container, the shape of the bottom portion is formed in a taper shape which becomes narrower toward the bottom so as to be easily dented inward. Further, the present invention is to provide a bellows container, characterized in that, in the above-mentioned bellows container, a tapered portion is thin so that it is easily dented inward, and a bottom plate is formed in a shape of a bottom portion having a thick wall. is there. Further, the present invention is a bellows container comprising a nozzle portion for filling and discharging contents, an expandable bellows portion, and a bottom portion having a piston function by being depressed inward with a width of one bellows or more, An object of the present invention is to provide a bellows container characterized in that the bottom part is previously depressed inside the bellows part.

Further, the present invention is to provide a bellows container in which the upper fold side and the lower fold side have a bellows portion having an isosceles triangular shape in one bellows. Is. Further, the present invention is to provide a bellows container in which the upper fold side and the lower fold side have a bellows portion having a shape of an isosceles triangle in the bellows one mountain. Further, the present invention is to provide a bellows container characterized in that the bellows container has a bellows portion in which a height of one bellows becomes smaller toward a bottom portion. Further, the present invention, in the above-mentioned bellows container, to provide a bellows container characterized in that the upper fold side and the lower fold side in the bellows one mountain has a bellows portion having an angled shape with respect to the mountain convex portion. To do. Further, the present invention provides the above-mentioned bellows container, wherein the bellows container has a bellows part having an unequal angle with respect to a mountain convex part in which the upper fold side and the lower fold side have one bellows. It is what Further, the present invention, in the above-mentioned bellows container, a bellows container characterized in that a convex arc portion is provided on one fold side near the mountain convex portion of the bellows portion, and a concave arc portion is provided on the other fold side. It is the one we are trying to provide. Furthermore,
Further, the present invention is to provide a bellows container characterized in that a bellows container composed of the nozzle portion, a stretchable bellows portion, and a bottom portion having a piston function is integrally formed. .

[0006]

According to the bellows container of the present invention having the above structure, the expandable bellows portion can be maintained in a compressed shape in the unfilled state.
It can be stored and transported without being bulky. At the time of filling, the bellows part is extended and filled. In use, the contents can be discharged from the nozzle part either by compression from the bottom direction or by suction from the nozzle part. At the time of discharge, since the bottom part functions as a dent piston, the remaining amount of the contents becomes extremely small after use. In addition, if the bottom part is previously dented inside the bellows part after molding, it can be used when the compression force and the suction force are weak. Also, by forming the shape of the bottom portion into a taper shape that becomes thinner toward the bottom, it is possible to make it easier to indent the bottom portion. Furthermore, the taper portion of the bottom portion is thin and the bottom plate is thick. By forming it in a shape, it is possible to make it easier to dent the bottom part inward, and it is possible to make the shape of the jig etc. used when pressing from the bottom part compress, and when denting. The shape of will be adjusted, and it has the effect of making it difficult to wrinkle.

Further, the present invention provides the above bellows container,
Since the upper folds and the lower folds have an isosceles-shaped bellows in one bellows, the strength of the upper side and the lower side are the same, so when compressing It is easy to fill because it tries to return, and since the upper side and the lower side come into contact during compression, the remaining amount inside the bellows one mountain is small, and the total length during compression is also short, so the whole The remaining amount is low. Further, in the bellows container, the bellows part has a bellows part in which the height of one bellows becomes smaller toward the bottom part, so that the inner small diameter part of the bellows part has a wide taper inside the bellows when compressed. Therefore, when the recessed bottom part plays the role of a piston, the taper part of the bottom part pushes out the contents along the taper inside the bellows part, so that the remaining amount of the contents after use is There is a decreasing effect. At this time, the outer diameters of the convex portions of the bellows are the same, and the diameter of the valley portion of the bellows increases as it approaches the bottom portion, and the mountain volume decreases as the height of the valley portion increases. . Further, the present invention, in the bellows container, the angle of one bellows, for example, by having a bellows portion having a smaller angle of the lower fold side with respect to the angle formed by the upper fold side with respect to the mountain convex portion, the angle at the time of compression. Since the smaller side enters inside the larger side, and is stable in that state, the shape at the time of compression is maintained. Also,
A gap is generated inside the bellows mountain due to the difference in angle between the upper and lower sides, and the content remains in that portion, and the total length at the time of compression is lengthened by the amount of the gap. The remaining amount is high.

Further, according to the present invention, in the above-mentioned bellows container, for example, by providing a convex arc portion on the upper side and a concave arc portion on the lower side in the vicinity of the convex portion of the bellows, the lower concave arc portion is compressed. It enters the inside of the upper convex arc portion and has the effect of maintaining the shape when compressed. In this case, the shape at the time of compression can be maintained even if the length angles of the upper and lower sides are the same. Also, since the angle and length are the same, the upper folds and the lower folds come into contact during compression, the remaining amount inside the bellows one mountain decreases, and the total length during compression also shortens. The overall remaining amount also decreases. Further, the present invention, by forming the bellows container consisting of the nozzle part, the expandable bellows part, and the bottom part having a piston function by integral molding, in order to reduce the remaining amount, a bellows container body and The bottom part is composed of two separately molded parts, and the bottom part is integrated with the container body by secondary processing by a method such as ultrasonic welding.
In contrast to the problem of leakage of contents from the welded portion, the present invention has a structure in which the bottom portion serving as a piston is integrally formed with the bellows container main body, so that the leakage of contents and an increase in cost. The problem of can be solved and the remaining amount of contents can be reduced as much as possible.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in the drawings. FIG. 1 is a product of a bellows container according to an embodiment of the present invention immediately after being molded, and a nozzle portion for filling and discharging contents. 1, a stretchable bellows portion 2 composed of seven bellows, and a bottom portion 3 having a width of one bellows or more and recessed inside the bellows to function as a piston. The bellows part of the bellows part 2 is composed of an upper fold side 6 and a lower fold side 7, which are continuously formed to form a mountain convex part 8
And a valley recess 9 are formed. The uppermost part of the bellows part 2 also serves as the container top plate 4, and the nozzle part 1 is integrally provided on the container top plate 4, and the bottom part 3 is continuously formed on the bottom plate part 5 of the lower fold side 7 of the lowermost part of the bellows part 2. Are provided integrally.

As shown in FIG. 10, the shape of the bellows portion 2 is such that, in one bellows, the upper fold side 6 and the lower fold side 7 are mountain convex portions 8.
With an isosceles triangle shape, and with an isosceles triangle shape not shown in the figure, for example, as shown in FIG. The lower fold side 7 has a smaller angle with respect to the upper fold side 6 and has a shape of an isosceles triangle, and one having an isosceles triangle shape not shown in the figure is considered. In the case of the isosceles triangle, as shown in FIG. 11, the upper side 6 and the lower side 7 are evenly contacted at the time of compression, so that the remaining amount of the inner space of the bellows is small, and at the time of compression. Since the overall length of the bellows part is also shortened, the overall remaining amount of the internal space is also reduced, but it tends to return to its original shape like a spring when compressed, whereas the latter has an unequal angle and an isosceles triangle. In the case of compression, when compressed, a small The side 7 on the other side enters and maintains a stable compressed state in that state, but a gap is created inside the bellows mountain due to the angle difference between the upper and lower sides 6 and 7, and the content is Will remain, and the overall length at the time of compression will increase by the amount of the clearance, and the amount of the contents remaining in the bellows part 2 will increase. In the case of an equiangular and isosceles triangle, a gap is generated due to the difference in the lengths of the upper and lower sides 6 and 7, and the content remains in that portion. Then, the side with a smaller angle reduces the diameter of the valley recess 9 and the inner diameter of the bellows 2 to reduce the capacity of the contents.

Further, according to the present invention, as shown in FIG. 14, in the above-mentioned shape of the bellows portion 2, a radius R, for example, is provided on one fold side (for example, the upper fold side 6 side) near the mountain convex portion 8. A convex arc portion 10 and a concave arc portion 11 having substantially the same radius R, for example, are provided on the other side (for example, the lower fold side 7 side), and when compressed, the concave arc portion 11 is provided inside the convex arc portion 10 as shown in FIG. In the embodiment, the shape at the time of compression can be maintained even if the angles and lengths of the upper and lower sides 6 and 7 are the same, and the upper side 6 and the lower side Since 7 contacts during compression, the remaining amount inside the bellows mountain becomes small, and the overall length of the bellows portion at the time of compression becomes short, so that the entire remaining amount can be reduced. Further, according to the present invention, as shown in FIG. 8 or FIG. 9, in the shape of the bellows portion 2, the height of one bellows becomes smaller toward the bottom portion 3, that is, the valley recess 9 of the bellows. 9 has a bellows shape in which the peripheral diameter gradually increases as it approaches the bottom portion 3, and the relative height from the valley of the peak convex portion 8 decreases as the height of the valley concave portion 9 increases. As described above, the inner diameter portion formed by overlapping the valley recesses 9 of the bellows portion 2 at the time of compression has a wide taper inside the bellows portion 2, so that the recessed bottom portion 3 functions as a piston. When this is done, the taper portion 12 of the bottom portion 3 pushes out the contents along the taper of the valley recesses 9 on the inside of the bellows part, so that the remaining amount of the contents after use can be reduced. At this time, the outer diameters of the convex portions 8 of the bellows portion 2 are the same, and the diameter of the valley portion of the valley concave portion 8 of the bellows portion 2 is the bottom portion 3.
As the height of the valley concave portion 8 increases, the peak convex portion 9 decreases in size.

On the other hand, the bottom portion 3 according to the present invention has the taper portion 12 which is tapered toward the bottom plate 13 so as to be easily dented inside, and as shown in FIG. The tapered portion 12 may be thin and the bottom plate 13 may be thick so as to be easily dented. Further, as shown in FIG. 5 or FIG. 6, as a secondary process after molding, the bottom part 3 can be dented in advance and used when the compressive force and the suction force are weak.

According to the bellows container of the present invention having the above structure, the bellows portion 2 can be compressed and its shape can be maintained as shown in FIG. 2 in the product immediately after molding shown in FIG.
In the unfilled state, the products can be stacked and stored and transported without being bulky. When the contents 14 are filled from the nozzle portion, the bellows portion 2 extends and the contents can be stored in the extended state as shown in FIG. When the product after filling is used, as shown by the arrow in FIG. 3, the bellows portion 2 may be contracted by the compression from the bottom direction or the suction from the nozzle portion, and the contents 14 may be discharged. In addition, since the bottom portion 3 functions as a dent piston during use, the bottom portion 3 is depressed into the bellows portion 2 in a compressed state after use and the remaining amount of the contents 14 is extremely small after use. Become. Especially, the height of one bellows shown in FIG.
In the case of a shape that becomes smaller as it gets closer to the bottom portion 3, as shown in FIG. 9, the inner diameter portion formed by overlapping the valley recesses 9 of the bellows portion 2 at the time of compression has a wide taper inside the bellows portion 2. Since it is compressed as if attached, when the recessed bottom portion 3 plays the role of a piston, the tapered portion 12 of the bottom portion 3 pushes out the contents 14 along the taper of the valley recessed portion 9 inside the bellows portion. The remaining amount of the contents 14 in the latter state becomes extremely small.

Further, in the product immediately after molding shown in FIG. 1, the bellows part 2 and the bottom part 3 can be compressed as shown in FIG. 5, so that the products are stacked in an unfilled state so as not to become smaller and bulkier. Can be stored and transported.
When filling the content 14 from the nozzle unit 1,
As shown in FIG. 6, only the bellows portion 2 is extended and the contents 14
When the product after filling is used, the bellows part 2 is contracted by compression from the bottom direction or by suction from the nozzle part when the product after filling is used. Since the object 14 can be discharged, and the bottom portion 3 which is previously recessed during use serves as a piston, the bottom portion 3 is depressed after use in the bellows portion 2 in a compressed state as shown in FIG. 4 or 9. However, the remaining amount of the contents 14 can be made extremely small, and when it is used when the pressing force and the suction force are weak, when the bottom part 3 is used as the secondary processing after molding, the bottom part 3 is dented in advance. It is convenient. FIG. 16 shows a case in which the bottom portion 3 of the lowermost fold 7 of the bellows portion 2 is not integrally provided with the bottom plate portion 5. In this case, even if only the bellows portion 2 is compressed, A large amount of contents 14 will remain.

[0015]

As described above, according to the bellows container of the present invention,
Since it has a nozzle part that fills and discharges contents, a bellows part that can expand and contract, and a bottom part that collapses inward with a width of one bellows or more and functions as a piston, Since the flexible bellows can be compressed, the products can be stacked and stored and transported without being bulky, and the bellows or the bottom can be extended and filled when filling, and when using, The contents can be discharged from the nozzle part by pressing from the bottom direction or by suction from the nozzle part, and at the time of this discharge, the bottom part acts as a dent piston, so the remaining amount of the contents after use is extremely small. There is an effect that can be reduced.

Further, in the bellows container, the bottom portion is formed in a tapered shape so that it is tapered toward the bottom so that it can be easily dented inward, so that the bottom portion can be easily expanded and contracted and the contents can be easily discharged. In addition, in the above bellows container, the tapered portion is thin so that it is easily dented inward, and the bottom plate is thick so that the bottom is more easily indented. In addition, it is possible to make the shape of the jig etc. used when compressing by pushing from the bottom plate part, and the shape when denting will be adjusted, and it is difficult to wrinkle etc. is there. Further, in the bellows container, the bottom portion is previously depressed inside the bellows portion, and is used when the pressing force and the suction force for discharging are weak, the effect that the previously depressed bottom portion acts as a piston. There is.

In the bellows container, the bellows container has a bellows part having an isosceles triangular shape with the upper fold side and the lower fold side in one mountain of the bellows. It is easy to fill because it tries to return to the original, and since the upper side and the lower side come into contact during compression, the remaining amount inside the bellows one mountain is small, and the total length during compression is Since it also becomes shorter, there is an effect that the entire remaining amount at the time of discharging can be reduced. Further, in the bellows container, the bellows portion has a bellows portion in which the upper fold side and the lower fold side have a shape of an isosceles triangle in one bellows, and thus the shape of the bellows portion can be freely set. Further, in the above-mentioned bellows container, since the height of one bellows has a bellows portion which becomes smaller toward the bottom portion, the inner small diameter portion of the bellows portion has a wide taper inside the bellows when compressed. Since the recessed bottom part plays the role of a piston, the taper part of the bottom part pushes out the contents along the taper inside the bellows part, and the effect of extremely reducing the remaining amount of the contents after use There is.

Further, in the above-mentioned bellows container, in the bellows one mountain, the upper fold side and the lower fold side have a bellows portion having an angle with respect to the convex portion of the mountain, so that one fold side and the other fold side are compressed. The sides are in close contact, and it has the effect of reducing the remaining amount of contents,
Further, in the bellows container, the upper fold side and the lower fold side of the bellows one mountain have a bellows portion having a shape of an unequal angle with respect to the convex portion of the bellows. Since the folds enter and are stable in that state, it has the effect of maintaining the compressed shape during transportation and transportation.
In the bellows container, a convex arc portion is provided on one fold side near the mountain convex portion of the bellows portion, and a concave arc portion is provided on the other fold side, so that the concave arc portion is inside the convex arc portion during compression. It has the effect of entering and maintaining the shape at the time of compression.In this case, the shape at the time of compression can be maintained even if the length angles of the upper and lower folds are the same, and the angle and the length are the same. Therefore, the upper folds and the lower folds come into contact during compression, the remaining amount inside the bellows is small, and the total length when compressed is also short, so the overall remaining amount can be reduced. There is. In the above bellows container, the nozzle portion, the expandable bellows portion, and the bottom portion having a piston function are integrally formed to reduce the remaining amount.
The bellows container body and the bottom part are composed of two separately molded parts, and the bottom part is integrated with the container body by secondary processing by ultrasonic welding, etc., and leakage of contents from the welded part occurs. In contrast to this, the present invention solves the problems of leakage of contents and cost increase by integrally molding the bottom portion which becomes the piston with the bellows container body, and minimizes the remaining amount of contents. There is an effect that can be.

[Brief description of drawings]

FIG. 1 is a schematic front view showing a usage mode of an embodiment of a bellows container according to the present invention.

FIG. 2 is a schematic front view showing another usage mode of the embodiment in FIG.

FIG. 3 is a partial vertical sectional side view schematically showing one usage mode of the embodiment of FIGS.

FIG. 4 is a partial vertical sectional side view schematically showing another mode of use of the embodiment of FIG.

5 is a schematic front view showing another embodiment of the embodiment of FIG.

6 is a schematic front view showing another mode of use of the embodiment of FIG.

FIG. 7 is a partial vertical cross-sectional side view schematically showing a main portion of one embodiment of the present invention by cutting it vertically.

FIG. 8 is a schematic front view showing one mode of use of another embodiment of the bellows container according to the present invention.

FIG. 9 is a partial vertical cross-sectional side view schematically showing one usage mode of the embodiment of FIG.

FIG. 10 is a partial schematic front view showing a partial outline of a main part of one embodiment of the present invention.

FIG. 11 is a partial schematic front view showing, in a schematic form, another usage mode of the main part of the embodiment of FIG.

FIG. 12 is a partial schematic front view showing a part of a main part of another embodiment of the present invention.

13 is a partial schematic front view showing, in a schematic form, another usage mode of the main part of the embodiment of FIG.

FIG. 14 is a partial schematic front view showing a part of a main part of another embodiment of the present invention.

FIG. 15 is a partial schematic front view showing a part of the other usage pattern of the main part of the embodiment in FIG. 14;

FIG. 16 is a schematic front view showing one usage mode of a comparative example with the bellows container according to the present invention.

FIG. 17 is a schematic front view showing another mode of use of the comparative example of FIG.

[Explanation of symbols]

 1 Nozzle part 2 Bellows part 3 Bottom part 4 Top plate part 5 Bottom plate part 6 Upper fold side 7 Lower fold side 8 Mountain convex part 9 Valley concave part 10 Convex arc part 11 Concave arc part 12 Tapered part 13 Bottom plate part 14 Contents

Claims (11)

[Claims] 1. A bellows container comprising a nozzle portion for filling and discharging contents, a bellows portion which is expandable and contractible, and a bottom portion which is recessed inward by a width of one bellows or more and functions as a piston. 2. The bellows container according to claim 1, wherein the shape of the bottom portion is formed in a taper shape that becomes narrower toward the bottom so that the bottom portion can be easily dented inward. 3. The bellows container according to claim 2, wherein the tapered portion has a thin wall and the bottom plate has a thick bottom portion so as to be easily dented inward. 4. A bellows container comprising a nozzle section for filling and discharging contents, a bellows section which is expandable and contractible, and a bottom section which is depressed inward with a width of one bellows or more and has a piston function. A bellows container, wherein the bellows container is previously provided by being depressed inside the bellows portion. 5. The bellows container according to claim 1, 2, 3, or 4, wherein the bellows container has a bellows portion having an isosceles triangular shape with an upper fold side and a lower fold side in one bellows. . 6. The bellows container according to claim 1, 2, 3, or 4, wherein the bellows container has a bellows portion having an isosceles triangle shape in the upper fold side and the lower fold side in one bellows mountain. . 7. The bellows container according to claim 1, 2, 3, 4, 5 or 6, wherein the bellows has a bellows portion whose height decreases toward the bottom. A bellows container to do. 8. The bellows container according to claim 1, 2, 3, 4, 5, 6 or 7, wherein the upper fold side and the lower fold side of the bellows have one shape at an angle with respect to the convex portion of the mountain. A bellows container having a bellows portion. 9. The bellows container according to claim 1, 2, 3, 4, 5, 6 or 7, wherein the upper fold side and the lower fold side of the bellows have one unequal angle with respect to the mountain convex portion. A bellows container having a bellows part. 10. The method according to claim 1, 2, 3, 4, 5, 6, 7,
8. The bellows container according to 8 or 9, wherein a convex arc portion is provided on one fold side near the mountain convex portion of the bellows portion, and a concave arc portion is provided on the other fold side. 11. The method according to claim 1, 2, 3, 4, 5, 6, 7,
The bellows container described in 8, 9, or 10, wherein the nozzle portion, the expandable bellows portion, and the bottom portion having a piston function are integrally formed.