JP2001240064A - Cylindrical covering body and ultrathin hollow container covered with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To recover a used disposable hollow container efficiently for recycling by a method wherein the hollow container is formed so that it can be compressed easily to reduce its volume and labels or the like stuck to its trunk can be easily separated while preventing heat distortion of the container by the label. SOLUTION: The hollow container main body in an tubular shape comprising a mouth/neck part 2, a shoulder part 3 connecting to the mouth/neck part, a trunk part 4b and a bottom part 5 is made up of a thermoplastic synthetic resin by blow molding, and while the trunk part and the bottom part are formed in a thickness that is not so thin as to be distorted by thermal expansion, the trunk part is formed in an ultrathin structure with protuberances 4a deformative in expansion at the time of filling under heat provided, being dented toward the inside from the trunk wall surface 4b, and thereby the ultrathin hollow container is made up. A covering body 6 in a case-like shape having openings 6a and serving as a label or the like is put over the trunk part of the container, and while unnecessary deformation of the container arising from expansion can be prevented, the protuberances 4a are deformed by expansion and projected through the openings 6a to hold the covering body 6, and thereby the ultrathin hollow container 1A covered with the covering body 6 is composed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin hollow container in which a label or the like attached to the body wall of a hollow container can be easily separated from the container and separated and collected. The present invention relates to a thin-walled hollow container in which a easily detachable label or the like is attached to a hollow container provided with a panel wall for absorbing pressure deformation in the container on the body wall portion.

[0002]

2. Description of the Related Art Conventionally, glass bottles have been used as containers for storing food items such as sake, soy sauce, edible oil, and soft drinks because they can be sanitized and their contents can be confirmed and can be reused. However, with the emergence of a new synthetic resin material in recent years and the development of hollow container molding technology using the same, it has become possible to mold various types of hollow containers that are lightweight and difficult to break. Has replaced glass bottles.

[0003] Then, polyethylene terephthalate (P
ET) The hollow container biaxially stretch blow-molded using a resin has extremely high transparency and gloss, does not contain impurities such as a plasticizer, and has good gas barrier properties and preservability of contents. Because it is excellent, various drinking water and seasonings,
It has been widely used as a container for alcoholic beverages and other foods. At the same time, as social conditions change, productivity and convenience are required, and changes in dietary habits are also seen. It has become.

By the way, in such a changing living environment, as the ready-made food contained in the hollow container made of synthetic resin is consumed in a large amount, the used empty food becomes empty. Containers began to be discharged in large quantities as garbage. These large-volume synthetic resin containers are difficult to disassemble like general garbage, and the amount of heat generated by incineration increases. The treatment requires a great deal of treatment cost and also poses various social problems, for example, because it may pollute the living environment.

Therefore, regarding the treatment of used synthetic resin containers that cause social problems such as environmental pollution and waste of resources, the Container Recycling Law is enforced from the viewpoint of effective use of resources. is what happened. However, in order to smoothly reuse used and discarded containers as resources, a large number of empty containers can be efficiently collected and separated so that they can be used as resin materials. The prerequisite is that it can be purified and can be recycled at low cost.
Therefore, in order to efficiently collect the hollow container, it is desired that the empty container is discarded after reducing the volume of the container as much as possible.
The recovered container must be easily segregated to be free of impurities.

[0006] By the way, as various synthetic resin hollow containers have become widely used, some of the products which are widely marketed include juices and other contents which are heated and sterilized in the hollow container while being kept hot. Must be filled with so-called heat, and these containers are
Since the contents are always cooled after being filled by heating and sealing, the inner volume is reduced, and the walls of the container are easily deformed as the inside of the container is depressurized, preventing such deformation There is a need to. Therefore, in order to prevent the wall surface of the container from being deformed and the external appearance from being impaired, the actual opening of the container was
As described in JP-A-109905, JP-A-57-199022, etc., a container molded into a shape having pressure resistance and strength so as not to deform the wall surface of a container has been used. I have.

[0007] In a heat-resistant hollow container having a body wall provided with a pressure-reducing structure as described above, which has been widely used in the past, a circumferential wall is provided on the body wall in order to increase the buckling strength of the container. In general, an uneven rib is provided and an absorbing panel wall in which a part of a body wall is deformed to absorb a change in internal pressure due to a change in the internal volume of the container. And such a pressure-resistant container is generally sold on the outer wall of the body with a label or the like stating the contents and quality of the container, the manufacturer, and other matters. Therefore, in the conventional hollow container 31 as described above, as shown in FIG. 10, a rib 34b having an uneven shape for imparting strength is formed in the circumferential direction of the body portion 34 and the rib is avoided. A flat surface 3 for attaching labels and the like L to portions other than the ribs 34b and the absorption panel walls 34c at the same time as the absorption panel walls 34c are formed above and below the body.
4a is formed on the body portion 34, and a label or the like L is attached to the attached portion.

However, the pressure-resistant hollow container 31 having the above-described structure includes the reinforcing ribs 34b and the absorbing panel walls 34.
c is provided, and it is not easy to reduce the volume by compressing the emptied container, so that it is difficult to collect a large amount of empty containers in large quantities. A special flat portion which makes it easy to apply the label must be provided. Furthermore, the label L attached to the wall surface of the body portion 34 is attached using an adhesive 37 to make it difficult to peel off. In addition, since various materials and printing inks different from the material of the container are generally used for the material of the label L, the collected container is crushed and separated so as not to contain impurities. It was not easy to do so, and the regeneration took too much time so that it could be reused as a raw material. Therefore, in the case of the conventional hollow container 31 having the configuration of the container to be discarded as described above, a large amount of empty and discarded containers are efficiently collected and reused as a raw material. It is difficult to satisfy the requirements for

Therefore, a hollow container having a pressure-resistant and heat-resistant structure can efficiently collect a large amount of used and discarded ones, and easily separate impurities such as labels after crushing. As a result of research on a hollow container which can be easily reused as a raw material, JP-A-3-200534, JP-A-5-16634, JP-A-5-44509, etc. Many proposals have been made for containers having various structures as described in (1).

For example, Japanese Unexamined Utility Model Publication No. Hei 5-44509 discloses that a base material to be attached to a hollow container is made of a polyester resin film of the same quality as the hollow container, and the inner surface of the film is After printing, a coating material containing microcapsules having air bubbles is applied from above the printed surface to form a label body having a specific gravity smaller than that of the container body. Then, after the label body is cut into a predetermined shape according to the container, the label body is formed into a cylindrical heat-shrinkable label that can be adhered, and the label is put on a predetermined position of the hollow container. , Heat shrink and paste.

The empty hollow container to which the label is attached in this manner can be easily crushed and then separated easily from the label portion and the container portion by the difference in specific gravity.
Attaching to the container as described above has a problem that the cost is high because a special coating agent is required. Therefore, eliminating these problems, the label can be stuck to the body of the container without using a special coating agent or adhesive, and can be easily peeled off compared to the conventional one. For example, a heat-shrinkable label is used as disclosed in Japanese Utility Model Laid-Open No. Hei 5-16634 and others.

As shown in FIG. 11, a hollow container using such a heat-shrinkable label is adhered to a body portion 44 of a biaxially stretch blow-molded hollow container 41 made of a saturated polyester resin represented by polyethylene terephthalate. Label 46 is formed using a heat-shrinkable film made of a polyester resin of the same quality as the container, and the surface of the film is printed with a trade name, a manufacturer, and the like, cut, and the perforations 4 are formed.
6a is provided, and shaped into a heat-shrinkable label (a so-called shrink label) formed in a tubular shape. Then, the label 46 thus formed into a cylindrical shape is placed over a predetermined position on the smooth surface of the hollow container 41 on which the label is to be attached, and then the label 46 is shrunk by heating using an infrared heater or the like. As a result, the hollow container 41
The label is A, but since such a label is not attached using an adhesive as in the related art, the label can be easily separated from the container body.

In any of the containers to which the shrink label or the like is attached as described above, since no adhesive is used to attach the label or the like, the label can be easily separated from the empty container body. However, since all containers have a structure that is hard to deform with an absorption panel wall part for imparting decompression resistance and heat resistance and a rib part for imparting buckling strength, empty containers can be used. It has been difficult to simply compress to reduce the volume by pressing. Therefore, in order to easily collect a large amount of containers and to easily purify the collected containers and reuse them as raw materials,
The emergence of a hollow container having reduced pressure resistance and pressure resistance, which enables the adhered body such as a label attached to the container to be easily peeled off and allows the container body to be easily compressed, is desired. I have.

[0014]

DISCLOSURE OF THE INVENTION The present invention relates to an empty hollow container in order to efficiently collect and reuse a large amount of used and discarded hollow containers so that they can be recycled. The hollow container is formed into a thin container having a heat-deformable absorption panel wall provided on the body wall thereof, and further molded into a thin container. A structure that can easily peel off a label or the like to be attached to the container, and is configured to prevent thermal deformation of the container by the label or the like, and the collected container can be easily separated so as not to contain impurities. It is another object of the present invention to provide a hollow container that can be reused as a raw material.

[0015]

Means for Solving the Problems A tubular hollow container comprising a mouth, a neck, a shoulder, a body, and a bottom connected thereto is formed by blow molding using a thermoplastic synthetic resin. Is formed to a thickness that does not thermally deform and forms a threaded portion for screwing the lid on the outer peripheral surface, and the shoulder and the bottom are formed so thin that they do not undergo thermal expansion deformation. The body is formed in an ultra-thin wall provided with a protruding portion that can be expanded and deformed by heating and filling to form a heat-fillable hollow container, and is formed into a tubular shape in the body of the hollow container. At the same time, a cover such as a label having an opening through which the protruding portion can protrude is adhered, and when the solution is heated and filled in the container, the container wall is prevented from being unnecessarily deformed, and at the same time, the label is used by the protruding portion. Ultra-thin with a cover such as a label attached to fix the cover of Constitute a hollow container of meat.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Blow molding using polyethylene terephthalate resin or other thermoplastic synthetic resin,
At the same time as forming into a tubular heat-resistant hollow container 1 having a mouth-neck portion 2, a shoulder portion 3, a body portion 4, and a bottom portion 5, the mouth-neck portion 2 is formed to be thick and a screw is formed on the outer peripheral surface. The shoulder 3 and the bottom 5 are formed so as to be thin enough not to undergo thermal expansion deformation, and the body 4 has a projection 4a that swells and deforms when the internal solution is filled. To form a hollow container body 1 which is formed to be ultra-thin and can be filled by heating.

On the other hand, a label base material or the like is created by displaying the product name, manufacturer, or pattern or design on paper or resin film by printing or the like, and the label base material or the like is used for the container. The label piece is cut into an appropriate shape according to the size, and is formed on the label piece 8 having a plurality of window-shaped openings 8a corresponding to the protrusions provided on the body of the container. And
The label piece 8 cut as described above is joined at both ends so as to form a tubular body that can be covered with the hollow container, and the opening provided in the label piece 8 is formed on the protrusion 4a of the hollow container 1. Covering or sticking body 6 such as a corresponding cylindrical label 6
Formed.

The container body formed as described above is provided with a protruding portion 4a which swells and deforms due to heating or filling, and the ultra-thin hollow container 1 is provided with the opening 6a to form a cylindrical label. Is adhered so that the protruding portion 4a can be swelled and deformed to form an ultra-thin, heat-fillable hollow container 1A having a cover such as a label adhered thereto. Subsequently, a soft drink or other heat-sterilized liquid is hot-filled in the hollow container 1A, and then a lid is screwed onto the mouth and neck portion 2 to seal the hollow container 1A. The protruding portion 4a provided on the body wall portion, which can be protruded and deformed, is protruded and deformed so as to protrude from the opening 6a of the cylindrical label or the like, and the protruding portion 4a is covered with a cylindrical cover such as a label. The body or the adhered body 6 is locked so as not to come off.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on one preferred embodiment with reference to the drawings. Embodiment 1 FIG. The present invention relates to a heat-resistant tubular hollow container having a mouth-neck portion 2, a shoulder portion 3, a body portion 4, and a bottom portion 5 connected to a preform made of polyethylene terephthalate resin by ordinary biaxial stretch blow molding. Form 1
At this time, as shown in FIG. 1, the mouth and neck portion 2 is formed to a thickness that does not cause thermal deformation, and a screw portion 2a for screwing a lid is formed on the outer peripheral surface thereof. The shoulder portion 3 and the bottom portion 5 are formed to be thin as long as they do not undergo thermal expansion deformation. Further, the body portion 4 is formed in a tubular shape having a rectangular cross section, and expands and deforms by heating. A protruding portion 4a is provided on a part of the body wall portion 4 and is formed into a heat-fillable cylindrical hollow container 1 formed in an ultra-thin shape.

As shown in FIG. 4A, the projecting portion 4a provided on the body portion 4 which swells and deforms due to heating is formed by forming a part of the body wall 4 formed into an ultra-thin rectangular tubular shape into a wall surface. 4b, when the liquid is heat-filled in the container, as shown in FIG. 4 (b), the protrusion 4a is thermally expanded and deformed in the direction of the arrow, thereby inverting the liquid. Then, wall 4
5B, that is, formed so as to be deformable from the state shown in FIG. 5A to the state shown in FIG. 5B. By forming the protruding portion 4a, which can be thermally expanded and deformed, provided on the body 4 of the hollow container in a tapered shape inward from the wall surface 4b of the body, a cylindrical label is formed. The cover 6 is formed so that the cover 6 can be easily put on the body of the hollow container 1.

Further, according to the present invention, a product name, a manufacturer, a precautionary note, a pattern, a design, and the like are displayed on a paper, a resin film, a metal foil, or the like serving as a base material for forming a label or a decorative pattern by printing or the like. Finish the coated base material such as a label according to the container to be used. The printed base material is cut into a shape and size suitable for the container to be used, as shown in FIG. 3, and the hollow part is cut into a predetermined portion of the cut base material. An opening 8a provided on the body 4 of the container 1 and protruding from the protruding portion 4a that protrudes and deforms is punched into a window-opening shape to produce a covering piece 8 such as a label. In this manner, the covering piece 8 cut and manufactured according to the container to be used is bent so as to form a rectangular tubular body that can cover the body 4 of the hollow container 1, and both ends thereof are aligned. As shown in FIG. 1, a cover 6 such as a rectangular tube-shaped label is formed.

The cover 6 such as a label or the like formed into a square tubular shape as described above is formed into an ultra-thin wall by providing the body wall portion 4 with the protruding portion 4a which is thermally expanded and deformed. Covered with a cylindrical hollow container body 1 and covered with a label or the like.
Into an ultra-thin cylindrical hollow container 1A capable of being filled with heat. When the ultra-thin hollow container 1A coated with the coating 6 such as a label in this manner is hot-filled with a liquid such as a soft drink that has been heat-sterilized as shown in FIG. Although it is heated from inside and tries to expand and deform, as shown in FIG.
As a result, the body 4 is tightened, so that the body 4 cannot be expanded and deformed, and the protruding part 4a that can be expanded and deformed in a state recessed inside the body wall is turned outward and provided on the cover 6 such as a label. The opening 6a projects from the opening 6a.

The cover 6 such as the label described above is
As shown in FIG. 2, at the same time as the state of being in close contact with the surface of the body wall 4 of the hollow container 1, the cylindrical adhered body 6 is engaged with the protruding portion 4 a which is inverted and protruded from the opening 6 a such as a label. Although it is fixed so that it does not come off from the hollow container 1, the cover 6 such as a label can be fixed more tightly by forming it with a heat-shrinkable resin film. The ultra-thin heat-resistant tubular hollow container 1A on which the cover 6 such as a label is attached in this way is hot-filled with a liquid such as a juice or other soft drink, and the mouth and neck of the hollow container are filled. 2. The lid was screwed on to seal and sealed, and then cooled to obtain a product in which the shape of the hollow container was not deformed.

In the above-described embodiment, an ultra-thin hollow container having a tubular body with a square cross section is used as the container shape. However, the present invention is limited to a hollow container having such a shape. Instead, a thin-walled hollow container having a circular or elliptical tubular cross section can be formed in the same manner as in the above invention. The hollow container formed as described above does not necessarily have to be filled with the content liquid by heating, and even when filled with room temperature, the protruding portion 4a that can swell and deform due to the internal pressure of the carbon dioxide gas, the internal solution, or the like has an outer side. The sticking body 6 such as a label can be fixed by inverting and projecting.

Embodiment 2 FIG. In the case of a cylindrical thin-walled hollow container having a circular body section, a preform made of a polyester resin such as a PET resin is cylindrically formed by ordinary biaxial stretch blow molding in the same manner as in the case of the prismatic container described above. As shown in FIG. 6, the mouth and neck 12
At the same time, a screw portion 12a for screwing the lid is formed on the outer peripheral surface, and the shoulder portion 13 and the bottom portion 14 are formed so as not to be thermally expanded and deformed.
Then, the cylindrical body portion 14 is formed into an ultra-thin wall, and a part of the body wall portion 14 is formed into a shape depressed inward from the wall surface so as to protrude and deform by thermal expansion or pressure. Ultra-thin cylindrical hollow container 1 having a protruding portion 14a formed thereon
Form 2

On the other hand, as in the case of forming the above-mentioned rectangular tubular adhesive body, a product name, a manufacturer, a precautionary statement, etc. are used for a paper or a resin film as a base material of a label or a decorative pattern body. Print and display according to the target container to form a coated base material such as a label, and then cut the adhesive base material into a shape suitable for the container to be used, and form the cut adhesive base material. An opening 16a, which is provided at a predetermined portion of the body of the hollow container and through which a protruding portion 14a which is thermally expanded and deformable, can be punched in a window-like shape, to produce a cover such as a label. The adhesive body produced in this manner is curved so as to form a cylindrical shape capable of covering the body of the hollow container, and both ends are overlapped and joined to each other to attach a cylindrical label or the like. The molded body 16 is formed.

The cover 16 such as a label or the like formed into a cylindrical shape as described above is formed into an ultra-thin wall by providing a protruding portion 14a which is thermally expanded and deformed on a part of the body wall as described above. An ultra-thin cylindrical hollow container 11A is formed on the body of the cylindrical hollow container 11 so that the protruding portion 14a to which a cover such as a label is attached can swell. Then, when the ultra-thin hollow container 11A coated with the cover such as the label is filled with a liquid such as a soft drink that has been heat-sterilized at room temperature, the hollow container reduces the internal pressure due to the filling liquid pressure or carbon dioxide gas. However, as shown in a two-dot chain line in FIG. 7, since the entire body wall portion 14 cannot be expanded and deformed because the outside thereof is covered with the cylindrical adhesive body 16 and cannot be expanded and deformed. The swellable protruding portion 14a formed in the thin-walled body wall 14 so as to be depressed inward is turned over to cover the label 16 or the like.
In a state protruding from the opening 16a.

Then, the above-mentioned cover 16 such as a label is provided.
Is a state in which it is brought into close contact with the outer surface of the body wall 14 of the hollow container 11, and at the same time, the protrusion 14a
The cover 16 such as a cylindrical label is locked at the portion, and is fixed so as not to come off from the wall surface of the hollow container 11. The ultra-thin heat-resistant cylindrical hollow container 11A thus covered with the cover 16 such as a label is filled with a liquid such as carbonated soft drink or liquor at room temperature. Even if the body was screwed and sealed and stored for a long time, a good-shaped product in which the body wall of the container was not deformed could be obtained.

Embodiment 3 FIG. As in the case of the cylindrical thin-walled hollow container, a preform made of a polyolefin resin such as a polypropylene resin is subjected to ordinary biaxial stretching blow molding to form a cylindrical hollow container 21 having a body section having an elliptical shape. As shown in FIG. 8, the mouth and neck portion 22 is formed so as to be thick, and a screw portion 22a for screwing a lid is formed on the outer peripheral surface. The bottom 24 is formed to be thin enough not to be thermally expanded and deformed, and the cylindrical body 24 is formed to be ultra-thin and a part of the body wall 24 is formed to be recessed inward from the wall. Then, the protruding portion 24a that can protrude due to thermal expansion or bulging deformation due to internal pressure is formed to form a cylindrical hollow container 21 main body that can be filled with heat or the like.

In the same manner as in the case of forming the cylindrical bonded body, the label or the like is printed and displayed on a heat-shrinkable resin film in accordance with the intended container. An opening through which the base material can be cut into a shape suitable for the container to be used, and at which a protruding portion 24a which is provided on the body of the hollow container main body and which expands and deforms can protrude at a predetermined portion of the cut adhesive base material. The portion 26a is punched in a window-like shape to produce a cover such as a label or a sticking body. The adhesive body thus produced is curved so as to have an elliptical cylindrical shape capable of covering the body of the hollow container having an elliptical cylindrical shape,
Both ends are overlapped and joined to form a cover 26 such as an elliptical cylindrical label.

The cover 26 such as a label or the like formed into an elliptical cylindrical shape as described above is attached to the body wall portion 24 as described above.
Is provided with a protruding portion 24a which is thermally expanded and deformed, and is placed over the body of an ultra-thin molded cylindrical hollow container 21, and then the cover 26 such as the label is shrunk by heating with an infrared heater. At the very least, an ultra-thin hollow container 21A in the form of an elliptic cylinder covered is formed.

When the ultra-thin hollow container 21A coated with a cover such as a label is filled with a liquid such as salad oil or other oil, the liquid causes the thin-walled body to swell and deform due to pressure from the inside. However, since the trunk wall portion 24 cannot be expanded and deformed by being clamped from the outside by the cylindrical covering member 26, a state in which the trunk wall portion 24 is depressed inside the trunk wall 24 as shown by a two-dot chain line in FIG. The protruding portion 24a, which can be swollen and deformed, is turned over and protrudes from an opening 26a provided in a cover 26 such as a label.
The sticking body 26 such as a tubular label is locked to the portion a, is closely attached to the body wall surface, and is fixed so as not to come off from the body wall 24 of the hollow container 21.

The ultra-thin heat-resistant hollow container 21A, to which the cover 26 such as a label is attached as described above, is filled with a liquid such as a soft drink in the same manner as in the first embodiment. Even in this case, even when the lid is screwed on the mouth and neck portion 22 of the container and sealed, and then cooled, a good-shaped product in which the wall of the hollow container 21A is not deformed can be obtained. did it.

As described above, according to the present invention, in a thin-walled hollow container obtained by molding a thermoplastic synthetic resin into a tubular shape by biaxial stretching blow molding, the body wall of the container is made to be smaller than that of the conventional one. It is formed to be ultra-thin and a part of the body wall portion is formed to be recessed inward from the wall surface to form a protruding portion which can be expanded and deformed by thermal expansion or internal pressure, and is to be expanded and deformed. In order to absorb the stress, a cover such as a label to be attached to the hollow container was formed in a cylindrical shape, and an opening was formed in the cover so that the projecting portion of the hollow container protruded and deformed protruded. The heat-resistant and pressure-resistant hollow container is formed by applying the material to the hollow container.

Accordingly, the hollow container of the present invention, on which the cover or the sticker such as the label formed in a cylindrical shape as described above is applied, is discarded because the inner solution contained in the container is exhausted. At this time, since there is no rib for reinforcement or a panel wall for absorbing deformation force, the container can be easily crushed by lightly pressing and compressing the body of the hollow container, and Since no adhesive is used, the cover such as a cylindrical label can be easily peeled off from the wall surface of the container.

Then, the hollow container is filled with the internal solution, and the swellable deformable protrusion is made to protrude, and the label is fixed so that the sticking body is locked to the protrusion and does not come off. The ultra-thin hollow container having an adhered body attached thereto is formed, but if the cover is formed using a resin film made of the same material as the hollow container body, the recovered container is formed. When recycled as a raw material, impurities can be prevented from being mixed, so that it can be efficiently recycled.

[0037]

The labeled hollow container of the present invention can be formed into a lightweight, ultra-thin container having expansion-deformation resistance without having a special structure, and the adhesive can be used. Can be manufactured easily and inexpensively, without having to use labels, and when empty empty labeled containers are discarded, the containers must be Since the volume can be reduced by compression and the label or the like can be easily separated from the container, a large number of empty containers can be efficiently collected.
The recovered container is extremely easy to recycle as a raw material, so that the cost can be kept low.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a rectangular hollow container of the present invention and a tubular covering body to be attached thereto.

FIG. 2 is a perspective view showing a rectangular hollow container to which the tubular covering of the present invention is adhered.

FIG. 3 is a plan view showing a coating piece for forming the tubular coating of FIG. 1;

FIG. 4 is a partial cross-sectional view showing (a) before and (b) after hot-filling an inner solution into a rectangular hollow container provided with a tubular coating.

FIG. 5 is a cross-sectional view showing an empty state (a) of the hollow container to which the cylindrical covering of FIG. 1 is adhered and a state (b) filled with an internal solution.

FIG. 6 is a perspective view showing a container in which a cylindrical covering is attached to a hollow container having a cylindrical cross section.

FIG. 7 is a sectional view taken along the line YY of the hollow container shown in FIG.

FIG. 8 is a perspective view showing a container in which a cylindrical covering is attached to a hollow container having an elliptical cylindrical cross section.

9 is a sectional view of the hollow container shown in FIG.

FIG. 10 is a side view showing a conventional hollow container covered with a tubular covering.

FIG. 11 is a side view showing a hollow container covered with a tubular covering body as a prior example of the present invention.

[Explanation of symbols]

 1A. Ultra-thin hollow container 1. 1. hollow container body Mouth and neck 3. Shoulder 4. Torso 4a. Projection 4b. 4. Body wall Bottom 6. Coating 6a. Opening 8. Coating piece 8a. Opening 11. Hollow container body 12. Mouth and neck 13. Shoulder 14. Torso 15. Bottom 16. Coating

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 3E033 AA01 BA18 CA16 CA18 CA20 DA03 DB01 DC10 DD01 FA03 GA02 3E062 AA09 AB01 AC02 DA07 JA04 JA08 JB04 JB11 JC02 JC05

Claims (7)

[Claims] 1. A cover such as a label to be attached to a body wall of a hollow cylindrical container, wherein the cover is formed into a cylindrical body according to the shape of the body wall of the hollow container. An opening for projecting a portion of the body wall of the hollow container where the body wall swells and deforms is formed on the cylindrical surface of the sticking body, wherein the cylindrical covering body is attachable to the hollow container. . 2. The tubular covering according to claim 1, wherein the covering is formed using paper. 3. The tubular covering according to claim 1, wherein the covering is formed using a synthetic resin film. 4. A blow molding of a hollow cylindrical container having a mouth and neck, a shoulder, a trunk, and a bottom connected to the mouth and neck using a thermoplastic synthetic resin, whereby the shoulder and the bottom are The body portion is formed so thin that it does not undergo thermal expansion deformation, and the body portion is provided with a protruding portion capable of swelling deformation recessed inward from the wall surface to form an ultra-thin wall and a cylindrically formed label. An ultra-thin hollow container characterized by being formed so as to be able to adhere a coating body such as 5. The shoulder and the bottom are blow-molded using a thermoplastic synthetic resin to form a cylindrical hollow container comprising a mouth and a neck, a shoulder, a body, and a bottom connected to the mouth and the neck.
The body portion is formed to be thin enough not to undergo thermal expansion deformation, and the body portion is formed in a body portion of an ultra-thin hollow container in which a protruding portion that swells and deforms is recessed inward from a wall surface to form an ultra-thin wall. A cover such as a label formed in a shape is attached so that the protruding portion can protrude, preventing unnecessary deformation due to expansion and locking the protruding deformed portion into an opening provided in the cover. An ultra-thin hollow container provided with a cover such as a label, wherein the cover is fixed. 6. The ultra-thin body provided with a cover such as a label according to claim 4, wherein the hollow container is formed to have heat resistance by biaxial stretch blow molding. Hollow container for meat. 7. The ultra-thin hollow body provided with a cover such as a label according to claim 5, wherein the cover is made of the same material as the hollow container body. container.