JP2002225828A - Sticking body such as label and method of molding polygon cylindrical vessel for inmold-forming the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry out molding in such a way that injected molten resin will not stain a label surface by turning in between the label surface and the outer molding surface, or in such a way that wrinkles will not occur on a label, etc., fitted within the metal mold by being displaced from a prescribed position. SOLUTION: A sticking body A1 such as a label, etc., to be stuck on the outer periphery surface of the body part of a cylindrically formed vessel that has a hooked part formed at the end part of its aperture, is shaped in a state of a flat developed view with an approximate form of a folding fan, and is cut such that the part of the upper end side that corresponds to the curved wall surface at the corner part of the vessel's body part is made to become a curved side R having an arc form oriented downward, and such body A1 is made into a cylindrically shaped sticking body A that is bent so that it will be in conformity with the outer periphery surface of the vessel's body, and after the cylindrically shaped sticking body is fitted on the inside of an outer mold 51 of a metal mold 5 and then an upper mold 52 is closed so as to bend the upper end part of the sticking body A1 along a hooked part forming cavity surface 52b, inmold-shaping is carried out by injection molding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container in which a label or the like is attached to the surface of a body of a cylindrical container formed of a thermoplastic synthetic resin and a method of forming the same. The present invention relates to an in-mold molded article formed by integrally molding a square-shaped cylindrical container by injection molding and simultaneously attaching a label or the like set in a molding die to a body wall of the container and a molding method thereof. It is.

[0002]

2. Description of the Related Art Conventionally, in order to provide a decorative effect not only to synthetic resin containers but also to various containers, to display contents, and to write precautions for use, a printing method of printing directly on the surface of the container, There are a shrink method in which a printed film is covered and thermally shrunk, and a sticking method in which a label or a pattern printed on the surface of a container is attached, and the like, and these methods have been used depending on the shape and use of the container. Among them, the method of sticking a printed body such as a label has been frequently used because it has an advantage that it can be easily applied to containers and articles having various shapes. Labels, etc. with adhesive glue on the wall surface of the goods are carefully applied one by one by hand, or automatically by a special labeling machine or the like according to the goods. Have been taken.

However, in the former method of attaching a label or the like by hand, the accuracy of the attachment tends to vary depending on the skill and personality of the worker because the method depends on human labor, and the work efficiency is higher than that of a machine. There was also a disadvantage that it was inferior in terms of quality. In addition, the latter method of attaching with a sticking machine can improve the workability and improve the sticking accuracy as compared with the former method of manual work, and eliminate a certain degree of variation. Although it is possible, a special device according to the shape of the container is required, and a place for installing the device and a large amount of equipment cost are required.

When such a sticking method is applied to a synthetic resin molded container, the molded container molded by injection molding, blow molding or the like is taken out of a molding die and then adhered manually. The glued label must be stuck on the wall of the container or stuck with a label sticking machine. It was inevitable.

[0005] Therefore, with respect to various containers molded using a synthetic resin, after the above-described container is molded, it is troublesome to attach a label or the like to the surface of the container taken out from the molding die. When a container is formed using a synthetic resin by omitting the operation process, a method of attaching a label to the container at the same time as molding has been considered. For example, Japanese Patent Application Laid-Open No. 63-242613 and Japanese Utility Model 8-426
A method such as that disclosed in Japanese Patent Laid-Open No. 5 has been adopted. Each of these methods is a so-called insert in which a label or the like is set in a molding die in advance, and then a synthetic resin is blow-molded or injection-molded to be integrated with a molded product simultaneously with molding of a container. This is called molding or in-mold molding.

However, insert molding or in-mold molding in which a label or the like is attached at the same time as molding of a container as described above is not applicable to the case where the former is used in blow molding as disclosed in JP-A-63-242613. Does not cause much problems because the softened parisone is only stretched, but when used in injection molding as in the latter Japanese Utility Model Publication No. 8-4265, the molten resin is subjected to pressure flow. As it flows in the molding die, the molten resin flow often leaks to the front side of the label, or the label may be pressed and wrinkled, so that such a problem does not occur It took meticulous care to do so.

Generally, blow molding is suitable for molding a hollow container shaped like a bottle as a molding means for molding various synthetic resin containers.
Injection molding is suitable for molding containers with shapes other than bottles, especially wide-mouth containers for containing and sealing foods and other articles. The container and the like are generally formed by injection molding.

[0008] Therefore, when a wide-open hollow container having a cylindrical shape, a square shape, or any other shape, which is widely used as a container for storing foods or the like, is formed by injection molding, a label is simultaneously formed on the surface of the container. When the insert molding or the in-mold molding is performed so as to apply a pattern, decoration, or the like, the injection molds 7A and 7B are kept open as shown in FIG. 7A. From
After the insert 71 such as a label is attached to a predetermined position on the inner surface of the outer mold 7A of the molding die, as shown in FIG.
The container 74 is formed by closing the molding dies 7A, 7B and then injecting the molten resin 73 into the molding dies from the injection molding machine 72.

However, when the molten resin is injected into the molding dies 7A and 7B on which the inserts 71 such as labels are mounted as described above, the molding resin is provided at an appropriate position such as the end or the bottom of the molded product. In general, molten resin is injected into the mold cavity from the gate portion 7C, but during this injection molding, the insert 71 such as a label is tightly fixed at a predetermined position on the inner surface of the mold and is completely fixed. Otherwise, the molten resin often flows out to the front side of the label due to various causes such as the flow of the resin injected into the mold and the pressure. In particular, in the case of a rectangular cylindrical container having a flange that locks the lid at the opening of the container as in the present invention, the upper end of the label is incorrectly bent, wrinkled, and sometimes distorted. Sometimes.

Therefore, in a method of insert-molding and sticking a label or the like by injection molding, as one means for improving the above-mentioned disadvantages, a label or the like 61 to be insert-molded is used. As shown by a two-dot chain line in FIG. 6, the portions 61A and 61 adhered to both side walls of the container.
In some cases, insert molding can be easily performed by making the shape of 1B connected by a portion 61C to be adhered to the bottom wall of the container to prevent the label from moving during injection molding. In order to insert-mold the label or the like formed as described above by injection molding, the label is formed in an exploded view as shown by a two-dot chain line in FIG. After that, if the label is mounted in an outer mold and then injection-molded, insert molding can be easily performed. However, according to such a molding method, the label is affixed to the bottom wall surface of the container, which does not need to be affixed.

Therefore, considering a structure in which a label or the like is stuck only to the side wall surface of the container, if the container itself is a thin-walled injection molded product having a cylindrical shape, the cylindrical container When the insert molding is performed in order to stick the label in a cylindrical shape on the surface of the cylinder, the elastic force to open outwardly acts on the label or the like that is rolled into a cylindrical shape in a cylindrical shape, so that the cylindrical shape is applied. Since the label comes into close contact with the cavity surface naturally and a gap in which the molten resin flows between the back surface of the label and the molding die surface, there is no such a serious problem.

However, when the container itself is an injection-molded product having a thin-walled structure in the shape of a square tube such as a square, an attempt is made to insert-mold such that a label or the like is attached to the entire body surface of the rectangular container. When molded using a label or the like B cut into the shape of the developed view as shown in FIG. 4 (b), the label or the like is formed as an adhered body B1 in a state of being bent into a rectangular tubular shape as shown in FIG. It is mounted in the mold 5. Therefore, when the molten resin is injected into the mold cavity 53 from the bottom wall portion of the container to be molded, the sticking body B1 such as a label is provided with a folding line and is formed in a square shape, and in the case of a cylindrical shape. It is difficult for the label or the like to uniformly adhere to the inner surface of the outer mold as in the above, so that the molten resin spills between the label surface and the mold surface, or the molten resin It acts to push the label away, causing the molten resin to adhere to the label surface and the label to wrinkle, often resulting in defective products, especially when applied to the flange at the open end of the container. Defective portions were likely to occur in the upper end portion of the attached label B and in the portion where the labels were joined.

In order to eliminate the cause of such defective products, inserts such as labels are formed to be thicker so as to have a force for piles in the flow of the molten resin, or a molding die is used. By providing the means for holding the label or the like on the surface with, for example, a suction means 7C as shown in FIG. 7 or some other means, the insert such as the label may be displaced or wrinkled. A method of closely contacting the inner surface of the cavity so that there is no void can be considered.

However, if a thick insert such as a label is used, the label must be accurately bent when the label is mounted in a molding die.
In addition, since the label must be carefully moved so as not to move when the mold is clamped, the cost of raw materials is high and the molding cycle cannot be made too high. Also, in order to add a vacuum suction means to the mold of the molding apparatus so that inserts such as labels can be strongly absorbed and held on the inner surface of the cavity, the structure of the molding mold becomes somewhat complicated. Equipment costs will increase, and both means will increase the cost of the product.

Further, as a molding die used for the insert molding or the in-mold molding as described above, it is conceivable to use an outer mold portion in which an insert is easy to be mounted and whose structure is simple, having a split mold structure. However, if you try to mold using such a mold as a split mold, it is inevitable that a parting line of the molding die will occur on the surface of the molded product, so there is a sense of quality It is not suitable for manufacturing products.

Therefore, the applicant of the present invention can use the injection molding apparatus which has been conventionally used as it is, and can use a thin-walled container having a cylindrical shape, particularly, a thin-walled rectangular shape having a substantially square shape. At the same time as the injection molding of the container, the label etc. are in-mold molded, and as a result of earnestly studying to make it possible to stick the label etc. on the outer wall surface of the rectangular container neatly, it is mounted in the molding die. The cause of the deformation such as wrinkles due to the molten resin injected from the injected label or the resin attached to the front side of the label is that the shape of the label at the corner of the molding die is largely related. Do you get it.

That is, when the label or the like is formed so as to cover the entire outer wall surface of the container, the label or the like is shown in FIG.
As shown in the development view shown in FIG. 5, a label or the like B in which the surface f2 corresponding to the flat surface of the side wall of the container and the surface c2 corresponding to the curved surface of the corner are alternately provided, and the bottom side L5 of each corresponding surface. And the upper side L6 are formed so as to be substantially parallel to each other, and cut so that the whole becomes substantially fan-shaped. The label or the like thus formed is bent into a cylindrical shape B1 as shown in FIG. Then, after as it was, it was mounted in a molding die, and then the molten resin was injected into the molding die 5 and insert-molded to be integrally adhered to the outer wall surface of the container.

However, as shown in FIG. 3, the label is formed linearly so that the upper side of the curved portion and the upper side of the flat portion have the same height.
The label B or the like is attached to the outer die, and the upper die is closed to bend the upper end of the label or the molten resin is injected into the molding die to form the label. When insert molding is performed by being pressed against the inner surface of the mold, stress is concentrated on the curved portion of the upper end of the label, particularly on the upper side of the corner, and the label is deformed on the curved portion to generate wrinkles. Or the label is rolled up and the molten resin adheres to the label surface, which is a cause of defective products.
In particular, it was found that the label tended to appear at the joining side where the both ends were fitted.

Therefore, in the present invention, the label or the like is formed into a unique shape in order to prevent the label or the like from wrinkling or other inconvenient states when the label or the like is formed by in-molding. By forming into a structure, it has become possible to obtain a container in which a label or the like is stuck neatly on the outer wall surface of a molded product to be injection-molded, even if it is a cylindrical container, particularly a container having a polygonal shape. It is intended to provide an in-mold label molding method.

[0020]

SUMMARY OF THE INVENTION The present invention relates to a container having a flange portion at the opening end having a rectangular cylindrical body, and in particular, a thin-walled container having a slightly tapered wall surface and having a substantially square shape. A thermoplastic synthetic resin container in which an adhesive body (display laminate) such as a label printed on a film or the like is integrally adhered to the outer peripheral surface of the container is formed by insert molding or in-mold molding using injection molding. In the method, the injected molten resin wraps around between the label surface mounted in the molding die and the molding outer die surface and stains the label surface, or is mounted in the molding die. A label or the like is formed in such a structure that the label or the like is not displaced from a predetermined position or wrinkles are generated by pushing the label or the like, and the label or the like is mounted in a molding die and insert-molded or immobilized by injection molding. By performing de-molded, and to provide a stuck containers molding method so as not label or the like on the surface of the container defective.

[0021]

SUMMARY OF THE INVENTION According to the present invention, there is provided a thin-walled container having a body section having a substantially square shape with rounded corners and an opening end for locking a lid. A thin wall formed by molding a cylindrical container of a thermoplastic synthetic resin and attaching an indicator such as a label printed on a film or the like to an outer peripheral surface formed so that a side wall of the container has a slightly tapered surface. When molding a cylindrical container, a thin-walled cylindrical container is formed by simultaneously attaching a label or the like to an outer wall surface of the container at the same time as molding the cylindrical container by insert molding or in-mold molding using injection molding. To form

In order to form a container to which a label or the like is attached as described above, an insert such as a label or the like having a shape attached to an outer peripheral surface including a flange portion of the thin-walled container having a substantially square shape. Is formed into a flattened development view, and the upper end portion corresponding to the corner of the container in the development view is cut so as to be a curved side curved downward in an arc,
A sticker such as a label having a unique shape is formed so that stress is not concentrated on a corner at the time of in-mold molding. Further, the label or the like cut into the above-described unique shape is formed into a shape that can be mounted in a molding die by rolling it into a cylindrical shape corresponding to the outer shape of the container to be molded.

Subsequently, after inserting the insert such as the label formed in a cylindrical shape into the cavity so as to be in close contact with the outer mold surface of the injection mold, the mold is closed, and then the mold is closed. The molten resin is injected into the cavity from the injection molding machine through the gate provided at the position which is the bottom of the container in the above, and the insert such as the label is pressed against the inner surface of the outer mold by the pressure of the molten resin. By molding into a cylindrical container as described above, wrinkles do not occur on the insert, and the molten resin does not flow out to the label surface, and the label etc. is stuck in a clean state. A thin cylindrical resin container is formed.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS At the same time as forming a cylindrical container having a substantially square rectangular cross section with rounded corners at the corners of a rectangular shape into a thin cylindrical container by injection molding of a thermoplastic synthetic resin,
A flange is formed at the open end of the container so that the closed lid can be locked, and the body wall of the container is formed to have a slightly tapered surface facing inward in the bottom direction. A thin-walled cylindrical shape obtained by integrally attaching a display such as a label printed on a film or the like to an outer wall surface including a flange portion of the thin-walled cylindrical container by in-mold molding by injection molding. In order to form the container, first, a display body such as the cylindrical label attached to the outer peripheral surface of the body of the substantially rectangular cylindrical container is formed in a flattened development view. Then, the label is cut into a structure in which the upper end side of the portion corresponding to the corner of the container body is formed into a curved side curved downward in an arc shape, thereby forming an adhered body such as a label.

Subsequently, the label or the like cut into the state of the developed view is shaped into a cylindrical shape so as to match the outer peripheral surface of the body of the container to be molded, and then rounded into the cylindrical shape. The label and the like are mounted in an opened injection molding die, the molding die is closed, and molten resin is injected into the molding die and molded into a thin-walled cylindrical container. In-mold molding is performed so that the label and the like are integrated with the molded container surface. After the injection molding is completed, after cooling, open the molding die and mold the molded product formed into a thin-walled cylindrical container with a display such as a label attached to the body of the cylindrical container. Remove from

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A thin cylindrical container 1 having a polygonal body 2 to which a label A or the like is attached and a flange 3 at an open end is integrally formed by in-mold molding using injection molding. The present invention will be described with reference to the drawings based on one optimal embodiment. First, a label A or the like having a shape as shown in FIG. 4 is formed. What is shown in the figure is a label of the present invention which is affixed to a thin cylindrical container,
The torso 2 of a cylindrical container having an inclined shape by in-mold molding
The label which is also attached to the back surface of the flange 3 at the opening end so as to cover the outer wall surface is developed in a flat state. As shown in FIG. 4, the label A or the like used in the present invention has a polygonal line portion L1 indicating a portion forming the lower side of the label when the body is adhered to a cylindrical container wall having a substantially square cross section. And a polygonal line portion L2 showing a portion forming the upper piece.
And a side line portion L which is attached and forms a joint side
3 and L3.

The above-mentioned fan-shaped label A or the like is
As shown in FIG. 4 (a) as a development view, a portion f corresponding to the flat side wall surface of the cylindrical container and a portion c corresponding to the arcuately curved side wall surface of the corner portion alternately exist. Is formed. Further, at the upper end portion in the fan-shaped developed view as described above, there are provided bent piece portions C1 and f1 adhered to the back surface of the flange portion, and the container corner portion serving as the bent piece is provided. Upper portion C1 of the portion c corresponding to the curved side wall surface
Is formed on a curved side so as to be a curved side R having a downwardly arcuate shape, and is cut into an adhesive body A such as a label having a unique shape used in the present invention. As shown in FIG. 2, the adhered body A such as a label or the like cut as described above is bent into a tubular body at a portion c corresponding to the curved side wall surface so as to conform to the shape of the side wall of the container. An adhesive body A1 such as a label that can be in-mold molded is obtained.

A label piece peculiar to the present invention which is cut as shown in the development view shown in FIG. 4A and bent into a cylindrical shape as shown in FIG. 2 so as to be mountable in an injection mold. As described above, the pasted body A1 is provided with a downwardly arcuate curved side R on an upper piece portion corresponding to the curved side wall surface of the container corner, as described above. Since the upper portion of the portion c corresponding to the corner of the container is formed lower than the upper portion of the corresponding portion f, the adhered body such as a label piece is mounted in the outer die of the molding die. When closing the upper mold,
The upper edge of the label etc. is easily curved along the mold surface,
The label and the like can be mounted in the molding die 5 without wrinkles or the like.

A cylindrical container 1 according to one embodiment of the present invention.
As shown in FIG. 1, a main body 2 has a flange 3 extending outward from the upper end of the body 2 so that the lid can be locked to the opening edge of the wide opening of the cylindrical container. Is formed so as to have a slightly downwardly inclined shape, so that a locking projection provided on the inner surface of the lid is engaged with the tip of the flange, and the lid is formed to be detachable. I have. In order to mold the cylindrical container 1 having the above-described structure, the injection mold 5 used in the present invention is, as shown in FIG. The female lower mold 51 is provided with an outlet 51a, and the upper mold 52 forms a cavity 53 for forming the cylindrical container 1 having a predetermined shape by fitting into the lower mold. I have.

The molding die 5 is formed on the upper end of the lower molding die 51 to form the flange 3 for fitting and locking the lid to the open end of the cylindrical container 1. Is formed with a projecting portion 51b slightly protruding in the upper end portion of the molding cavity 53, and at the lower end portion of the upper molding die 52 so as to correspond to the projecting portion in the upper end portion of the molding cavity 53. A recess 52b is formed.

The upper mold 52 and the lower mold 5 having the above structure
In the injection molding apparatus provided with the molding die 5 comprising the molding die 1, first, the molding die 5 is opened up and down, and the label or the like cut into the shape of the developed view shown in FIG. ,
2, the upper end L2 of the sticky body A1 such as the label is slightly protruded into the lower mold 51, and the upper mold 52 is attached to the lower mold 51. close. When the molding die 5 is closed in this way, the adhered body A1 such as a label, which is mounted in the lower molding die 51 and whose upper end side L2 slightly projects, is projected by the wall surface of the concave portion 52b of the upper molding die 55. Is pressed, and the upper end side L2 is curved downward along the concave wall surface, and is fixed in the cavity 53 to enable injection molding.

Subsequently, when the molten resin is injected into the molding die 5 from the injection port 51a of the lower molding die 51 by the injection molding machine, the molten resin wraps the label from the bottom of the container toward the upper opening. The liquid flows through the cavity 53 so as to be pressed against the inner surface of the lower mold 51, and is formed into a substantially rectangular cylindrical container. At the same time, the label and the like are integrally molded with the outer surface of the container. Affixed. When the bonded body A1 such as a label is formed by in-molding in this manner, the upper end side L2 of the label curved outwardly along the surface of the concave portion 52b of the upper molding die 52 is shown in FIG.
As shown in (b), the molten resin flowing in the cavity 53 is pressed so as to be in close contact with the projection 51b of the lower molding die 51 and is curved, and even the back surface of the flange 3 of the container 1 to be molded. It is a form that is stuck together.

When the bonded body A1 is formed by in-molding in this manner, in the present invention, the upper side of the label or the like of the part c corresponding to the curved side wall surface of the container corner where stress tends to concentrate is Since it is formed in the curved piece R curved so as to form a downward arc, even if stress is generated in the upper side portion of the label or the like, it concentrates on the portion c corresponding to the curved side wall surface of the corner. There is no, the end of the label etc. is turned up,
Since the label does not wrinkle and the molten resin does not wrap around to the front side of the label, the label is stuck to the container body wall surface neatly.

When in-mold molding of a label or the like by injection molding is completed in this way, the molding die is cooled,
Simultaneously with the retreat of the injection molding machine, the molding die 5 is opened up and down, and the molded container 1 is released from the lower molding die 51 under the force of the operation of the knockout pin or the like from the bottom, and is released as a product. Taken out. The product molded in this way does not show a parting line on the surface, nor does it have wrinkles, etc., and the label or decorative body is stuck to the back of the flange part neatly Since it becomes a container, it also reinforces the flange, and can be strongly engaged with the flange when the cover is attached.

As described above, according to the present invention, the body wall 2 of the thin-walled cylindrical container 1 having the slightly tapered surface on the body wall and the flange 3 for locking the lid at the open end is provided on the body wall 2. In the case where a label or the like is stuck by in-mold molding using injection molding, the label or the like is provided on a portion f corresponding to the flat side wall surface of the cylindrical container and a side wall surface curved in an arc shape of a corner. FIG. 4 is an exploded view of FIG. 4 in which the corresponding portions c are provided alternately and the upper side portion of the portion c corresponding to the side wall surface is provided with a downwardly curved arcuate side R. It is characterized in that in-mold molding is performed using a piece cut into such a fan shape.

Then, the bonded body such as a label cut into a shape as shown in FIG. 4 is rounded into a cylindrical shape, and then mounted in an injection molding die, and subjected to in-mold molding by injection molding. Since the label is attached to the wall surface of the cylindrical container, when the label or the like receives a pressing force due to the resin pressure in the molding die, the stress acting on the label or the like is applied to the upper end side of the label. While trying to concentrate on the corner of the cylinder while bending while pressing against the lower mold, the upper edge of the corner of the label etc. is curved in an arc shape and seems to disappear, Stress does not concentrate on the corners of labels and the like. Therefore, the label or the like is subjected to the in-mold molding without wrinkling or curling of the end portion, and the molten resin is stuck to the container wall surface without flowing around the label surface.

Further, according to the present invention, the molding die is not a split mold, but has a punching die structure including an outer die and an inner die that form a cylindrical body, so that the surface of the molding die is No parting line is formed. Furthermore, a thin sticky body such as a label is inserted into the outer mold where the cylindrical cavity is formed in the outer mold in which the cylindrical cavity is formed, and then the inner mold is closed. Since injection molding is used, there is no need to mount using a special label supply means as in the related art, so that mounting is easy.

[0038]

As described above, according to the present invention, the forming die is constituted by the inner die and the outer die, and the punching die structure having the cylindrical cavity is used without dividing the outer die. Since the label printed on the film is cut into a unique shape for in-mold molding, parting lines may appear on the surface of the molded product, and wrinkles may occur. Thus, it is possible to obtain a cylindrical container to which a beautiful label or decorative body is stuck.

Further, since the adhesive such as a label is pressed against the cavity surface by the flow of the molten resin injected from the gate port, the in-mold molding is performed. Even if it does not strongly adsorb to the cavity surface, the molten resin does not flow out to the surface of the bonded body, nor does the wrinkle occur on the bonded body,
In-mold molding is possible even with a thin adhesive body.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cylindrical container molded according to the present invention.

FIG. 2 is a perspective view of the label and the like shown in FIG.

FIG. 3 is a perspective view of the label and the like shown in FIG.

4A is a developed view showing a label and the like used in the present invention, and FIG. 4B is a developed view showing a conventional label and the like.

FIGS. 5A and 5B are cross-sectional views showing a step of in-mold molding the cylindrical container of the present invention, wherein FIG. 5A is a view in which a label or the like is mounted on a molding die, and FIG.

FIG. 6 is a perspective view illustrating a prior art example of the present invention.

FIG. 7 is a sectional view showing conventional in-mold molding;
(A) is a diagram attached with a label, (b) is a diagram obtained by injection molding.

FIGS. 8A and 8B are partial cross-sectional views of the cylindrical container shown in FIG. 1, wherein FIG. 8A is a cross-sectional view taken along line XX and FIG. 8B is a cross-sectional view taken along line YY.

[Explanation of symbols]

 1. 1. cylindrical container 2. torso Tsuba 5. Molding mold 51. Lower mold 51a. Injection port 51b. Projection 52. Upper mold 52b. Recess 53. Cavities A. Label B. Label A1. Adhered body B1. Adhered body R. Curved piece

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) B29L 22:00 B29L 22:00

Claims (5)

[Claims] 1. A label or the like to be attached to an outer peripheral surface of a body of a cylindrical container having a rounded corner and a cross section of a body formed in a polygonal shape and a flange formed at an open end. The adhesive body is formed in a flat developed view, and cut into a shape in which the upper end side of a portion corresponding to the curved wall surface of the body corner of the container is formed into a downwardly arcuate curved side. An adhered body such as a label, which is characterized in that: 2. A rounded corner is formed so that a cross section of the body is formed in a polygonal shape, and a wall surface of the body is formed as a tapered surface facing inward in a bottom direction. Affixed body such as a label to be attached to the outer peripheral surface of the body of the cylindrical container forming the portion, and formed in a flat fan-shaped flat developed view, and the corner of the body of the container An adhesive body such as a label, wherein an upper end side of a portion corresponding to a curved wall surface is cut into a shape formed into a downward curved arcuate side. 3. The sticking body such as a label formed in a flat developed view has a portion corresponding to a flat side wall surface of a cylindrical container and a portion corresponding to a curved surface of a corner portion provided alternately. 3. A sticky body such as a label according to claim 1 or 2, wherein the adhesive body is cut so that a central portion of a portion corresponding to the curved surface of the corner portion becomes a joining side. . 4. A label or the like which is attached to the outer peripheral surface of a body of a cylindrical container having a rounded corner and a cross section of a body formed in a polygonal shape and a flange formed at an open end. The adhesive body is formed in a flat developed view, and the upper end side of a portion corresponding to the curved wall surface of the body corner of the container is cut so as to be a curved side having a downward arc shape. Is formed into a tubular body by bending so as to conform to the outer peripheral surface of the body of the container. After the tubular body is mounted in a molding die, it is formed by injection molding. A method for forming a thin-walled polygonal cylindrical container to which a label or the like is adhered, wherein an adhered body such as a label is integrally adhered to a container wall surface by molding. 5. A rounded corner is formed so that a cross section of the body is formed in a polygonal shape, and a wall surface of the body is formed as a tapered surface facing inward in a bottom direction. The sticking body such as a label stuck on the outer peripheral surface of the body of the cylindrical container having the portion is formed in a flat developed view having a substantially fan shape, and the body corner of the container is formed. The upper end side of the portion corresponding to the curved wall surface of the part is cut so as to be a curved side having a downwardly arcuate shape, and a cylindrical shape bent so as to match the outer peripheral surface of the body of the container. The upper end of the attached body is curved along the surface of the flange-forming cavity by closing the upper mold after mounting the cylindrical adhered body in the outer mold of the forming die. After that, it is featured that the adhered body such as a label is integrally adhered to the container wall by in-mold molding by injection molding. A method of forming a thin polygonal cylindrical container to which a label or the like is attached.