JP7350471B2 - container - Google Patents

Description

The present invention relates to a novel container.

Conventionally, when manufacturing plastic containers by injection molding, a method has been reported in which a label is in-molded on the bottom of the container (for example, Patent Document 1).
In the means of the present invention, in-mold labeled labels having barrier properties are configured for the bottom surface and for the side wall surface, and the bottom label has a larger diameter than the inner or outer surface of the bottom of the container, and the side wall label has a larger diameter than the inner or outer surface of the bottom of the container. The size is at least the same as the outer circumferential surface of the container side wall and the thread bottom, that is, the combined size of the side wall outer circumferential surface and the thread bottom outer circumferential surface, and both labels are loaded into an injection mold and resin is injected into the bottom surface. The outer periphery of the label is bent to the outer periphery of the core of the mold or the inner periphery of the recess for the thread bottom provided on the cavity side by the shearing speed and shear pressure of the resin, and the outer periphery of the label for the bottom is bent to the inner periphery of the inner surface of the container side wall or The side wall label is formed on the container bottom in a state extending on the inner surface of the thread bottom, and the side wall label is formed on the outer circumferential surface of the container side wall and the outer circumferential surface of the thread bottom.

JP 9-174595

However, when the container is manufactured by the method described above, there are the following problems.
FIG. 5 is an enlarged sectional view showing an example of a conventional container manufactured by the method described above. As shown in FIG. 5, the container wall 3 includes a label 5.
When this container is dropped, a crack 11 may occur in the wall 3 at the end 51 of the label.

Therefore, it is desired to develop a new container that solves these problems.
The present invention has been made in view of such problems, and an object of the present invention is to provide a novel container.

In order to solve the above problems and achieve the objects of the present invention, a container of the present invention is an injection molded product, and has a bottom and a wall formed upward from the periphery of the bottom, and the bottom has a a label on the upper side; the wall part includes the label on the inside; in a vertical section of the container, there is an angular change point O on the inside of the wall part; above the angular change point O; The thickness of the wall portion is a predetermined value, and below the angle change point O, the thickness of the wall portion increases linearly from the angle change point O, and above the angle change point O, the thickness of the wall portion increases linearly. , the thickness T of the wall is in the range 0.6-1.0 mm, and the vertical distance Q from the upper surface of the bottom to the edge of the label contained inside the wall is within the range of 0.6 to 1.8 mm, from the inner line of the wall at the end of the label to the extension of the inner line of the wall above the angle change point O. The distance L is in the range of 0.1 to 0.4 mm, the thickness M of the label is in the range of 0.03 to 0.08 mm, and (the distance L - the thickness M)/the thickness The value of the angle T is within the range of 0.07 to 0.53, and the vertical distance P from the upper surface of the bottom to the angle change point O is within the range of 3.0 to 7.0 mm. The angle θ between the inner line of the wall portion and the extended line below the angle change point O is within a range of 2.0 to 4.0°.

The container of the present invention is an injection molded article, and has a bottom and a wall formed upward from the periphery of the bottom, the bottom includes a label on the upper side, and the wall has the label on the inside. In a vertical section of the container, there is an angle change point O inside the wall, and above the angle change point O, the thickness of the wall is a predetermined value, and the wall has a predetermined thickness. Below the angle change point O, the thickness of the wall increases linearly from the angle change point O, and above the angle change point O, the thickness T of the wall increases from 0.6 to 1.0 mm, and the vertical distance Q from the upper surface of the bottom to the edge of the label contained inside the wall is in the range 0.6 to 1.8 mm; A distance L from the inner line of the wall at the end of the label to a line extending the inner line of the wall above the angle change point O is in the range of 0.1 to 0.4 mm. , the thickness M of the label is in the range of 0.03 to 0.08 mm, and the value of (the distance L - the thickness M)/the thickness T is in the range of 0.07 to 0.53. Characterized by being within.

The container of the present invention is an injection molded article, and has a bottom and a wall formed upward from the periphery of the bottom, the bottom includes a label on the upper side, and the wall has the label on the inside. In a vertical section of the container, there is an angle change point O inside the wall, and above the angle change point O, the thickness of the wall is a predetermined value, and the wall has a predetermined thickness. Below the angle change point O, the thickness of the wall increases linearly from the angle change point O, from the upper surface of the bottom to the edge of the label contained inside the wall. The vertical distance Q is within the range of 0.6 to 1.8 mm, and the vertical distance P from the upper surface of the bottom to the angle change point O is within the range of 3.0 to 7.0 mm. The angle θ between the inner line of the wall below the angle change point O and the extension of the inner line of the wall above the angle change point O is 2.0 to 4.0. It is characterized by being within the range of °.

The present invention produces effects as described below.

The container of the present invention is an injection molded article, and has a bottom and a wall formed upward from the periphery of the bottom, the bottom includes a label on the upper side, and the wall has the label on the inside. In a vertical section of the container, there is an angle change point O inside the wall, and above the angle change point O, the thickness of the wall is a predetermined value, and the wall has a predetermined thickness. Below the angle change point O, the thickness of the wall increases linearly from the angle change point O, and above the angle change point O, the thickness T of the wall increases from 0.6 to 1.0 mm, and the vertical distance Q from the upper surface of the bottom to the edge of the label contained inside the wall is in the range 0.6 to 1.8 mm; A distance L from the inner line of the wall at the end of the label to a line extending the inner line of the wall above the angle change point O is in the range of 0.1 to 0.4 mm. , the thickness M of the label is in the range of 0.03 to 0.08 mm, and the value of (the distance L - the thickness M)/the thickness T is in the range of 0.07 to 0.53. The vertical distance P from the upper surface of the bottom to the angle change point O is within the range of 3.0 to 7.0 mm, and the wall portion below the angle change point O is Since the angle θ between the inner line and the extended line is within the range of 2.0 to 4.0°, a novel container can be provided.

The container of the present invention is an injection molded article, and has a bottom and a wall formed upward from the periphery of the bottom, the bottom includes a label on the upper side, and the wall has the label on the inside. In a vertical section of the container, there is an angle change point O inside the wall, and above the angle change point O, the thickness of the wall is a predetermined value, and the wall has a predetermined thickness. Below the angle change point O, the thickness of the wall increases linearly from the angle change point O, and above the angle change point O, the thickness T of the wall increases from 0.6 to 1.0 mm, and the vertical distance Q from the upper surface of the bottom to the edge of the label contained inside the wall is in the range 0.6 to 1.8 mm; A distance L from the inner line of the wall at the end of the label to a line extending the inner line of the wall above the angle change point O is in the range of 0.1 to 0.4 mm. , the thickness M of the label is in the range of 0.03 to 0.08 mm, and the value of (the distance L - the thickness M)/the thickness T is in the range of 0.07 to 0.53. Since it is inside the container, a new container can be provided.

The container of the present invention is an injection molded article, and has a bottom and a wall formed upward from the periphery of the bottom, the bottom includes a label on the upper side, and the wall has the label on the inside. In a vertical section of the container, there is an angle change point O inside the wall, and above the angle change point O, the thickness of the wall is a predetermined value, and the wall has a predetermined thickness. Below the angle change point O, the thickness of the wall increases linearly from the angle change point O, from the upper surface of the bottom to the edge of the label contained inside the wall. The vertical distance Q is within the range of 0.6 to 1.8 mm, and the vertical distance P from the upper surface of the bottom to the angle change point O is within the range of 3.0 to 7.0 mm. The angle θ between the inner line of the wall below the angle change point O and the extension of the inner line of the wall above the angle change point O is 2.0 to 4.0. Since it is within the range of 100°C, a novel container can be provided.

FIG. 1 is a perspective view showing an example of a container of the present invention. FIG. 1 is a plan view showing an example of a container of the present invention. 3 is a front view showing an example of the container of the present invention, and a sectional view taken along the line AA in FIG. 2. FIG. FIG. 3 is an enlarged cross-sectional view taken along line BB in FIG. 2, showing an example of the container of the present invention. It is an enlarged sectional view showing an example of a conventional container.

EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the invention regarding a container is demonstrated.

The container of the present invention is an injection molded article, and has a bottom and a wall formed upward from the periphery of the bottom, the bottom includes a label on the upper side, and the wall has the label on the inside. In a vertical section of the container, there is an angle change point O inside the wall, and above the angle change point O, the thickness of the wall is a predetermined value, and the wall has a predetermined thickness. Below the angle change point O, the thickness of the wall increases linearly from the angle change point O.

FIG. 1 is a perspective view showing an example of the container of the present invention. FIG. 2 is a plan view showing an example of the container of the present invention. FIG. 3 is a front view showing an example of the container of the present invention, and a sectional view taken along the line AA in FIG. 2.

Here, a direction parallel to a plane passing through the X-axis and the Y-axis is defined as a "horizontal direction." Furthermore, a direction parallel to the Z-axis is defined as a "perpendicular direction."

The container of the invention has a bottom part 2, a wall part 3, a flange part 6, a thread bottom part 7 and a stack rib 8.
As shown in FIGS. 2 and 3, a bottom portion 2 is formed below the container 1. The bottom portion 2 has a circular flat plate shape and has a predetermined thickness.

As shown in FIGS. 1 and 3, a wall portion 3 is formed upward from the periphery of the bottom portion 2. As shown in FIGS.
As shown in the vertical cross section of FIG. 3, the wall portion 3 is formed to be inclined from the bottom portion 2 to the outside of the container 1. The angle of inclination of the wall portion 3 has a predetermined value.
The bottom part 2 and the wall part 3 form a space for holding objects.

As shown in FIGS. 1 to 3, a flange portion 6 is formed at the upper end of the wall portion 3. As shown in FIGS. The flange portion 6 has a shape of a concentric hollow circular plate and has a predetermined thickness. A lid material (not shown) is thermocompression bonded onto the flange portion 6 to hold an object therein.
As shown in FIG. 3, a thread bottom portion 7 is formed below the portion where the bottom portion 2 and the wall portion 3 connect. The thread bottom portion 7 is formed in a circumferential shape at a portion where the bottom portion 2 and the wall portion 3 are connected.

As shown in FIGS. 2 and 3, stack ribs 8 are formed inside the wall portion 3. A plurality of stack ribs 8 are formed. The stack rib 8 is formed between the upper container and the lower container so that when a plurality of containers are stacked, the lower end of the thread bottom 7 of the upper container rests on the upper end of the stack rib 8 of the lower container. The purpose is to ensure a certain distance between the two. This allows multiple containers to be stacked reliably.

The range of the horizontal maximum diameter D of the container 1 shown in FIG. 2 will be described later.
The range of the vertical height H of the container 1 shown in FIG. 3 will be described later.
The lid material that is thermocompression bonded onto the flange portion 6 will be described later.
Examples of items to be stored in the container 1 will be described later.
The container of the present invention is an injection molded product, and the method for manufacturing the container will be described later.

FIG. 4 is an enlarged cross-sectional view taken along line BB in FIG. 2, showing an example of the container of the present invention.

The bottom part 2 includes a label 5 on the upper side. On the upper side of the bottom part 2, a label 5 is present. Note that the bottom portion 2 includes the label 5 present on the upper side thereof.
The wall 3 includes a label 5 on the inside. A label 5 is present inside the wall portion 3. Note that the wall portion 3 includes the label 5 present inside the wall portion 3.

In the vertical section of the container 1, an angle change point O exists inside the wall portion 3.
Above the angle change point O, the thickness of the wall portion 3 is a predetermined value. Below the angle change point O, the thickness of the wall portion 3 increases linearly from the angle change point O.

The thickness N of the bottom including the label is 1.0 mm.
Preferably, the thickness N is within the range of 0.7 to 1.7 mm. Further, it is more preferable that the thickness N is within the range of 0.9 to 1.5 mm.

When the thickness N is 0.7 mm or more, there is an advantage that the mechanical strength of the bottom of the container can be improved. This effect becomes more pronounced when the thickness N is 0.9 mm or more.

When the thickness N is 1.7 mm or less, there is an advantage that the weight of the container can be reduced. This effect becomes more pronounced when the thickness N is 1.5 mm or less.

Note that the numerical range of the thickness N described above merely indicates a preferable range or a more preferable range. Therefore, it goes without saying that the above-mentioned effects can be achieved even in ranges other than these preferred ranges or even more preferred ranges.

In the vertical section of the container, the angle α of the outer surface of the wall of the container with respect to the vertical line is 8°.
Preferably, the angle α is in the range 6-10°. Further, it is more preferable that the angle α is within a range of 7 to 9 degrees.

When the angle α is 6° or more, when multiple containers are stacked, sufficient space can be secured between the outer surface of the upper container wall and the inner surface of the lower container wall, so that the containers It has the advantage that it can be stacked reliably. This effect becomes more pronounced when the angle α is 7° or more.

When the angle α is 10° or less, there is an advantage that when the container is placed on a table or the like, the container is less likely to fall over and stability is improved. This effect becomes more pronounced when the angle α is 9° or less.

Note that the numerical range of the angle α described above merely indicates a preferable range or a more preferable range. Therefore, it goes without saying that the above-mentioned effects can be achieved even in ranges other than these preferred ranges or even more preferred ranges.

In the vertical section of the container, above the angle change point O, the thickness T of the wall portion is 0.7 mm.
The thickness T is preferably within the range of 0.6 to 1.0 mm. Further, it is more preferable that the thickness T is within the range of 0.65 to 0.8 mm.

When the thickness T is 0.6 mm or more, there is an advantage that the mechanical strength of the wall of the container can be improved. This effect becomes more pronounced when the thickness T is 0.65 mm or more.

When the thickness T is 1.0 mm or less, there is an advantage that the weight of the container can be reduced. This effect becomes more pronounced when the thickness T is 0.8 mm or less.

Note that the numerical range of the thickness T described above merely indicates a preferable range or a more preferable range. Therefore, it goes without saying that the above-mentioned effects can be achieved even in ranges other than these preferred ranges or even more preferred ranges.

In the vertical section of the container, the distance L from the inner line of the wall at the end of the label to the extension of the inner line of the wall above the angle change point O is set to 0.2 mm.
Preferably, the distance L is within a range of 0.1 to 0.4 mm. Further, it is more preferable that the distance L is within a range of 0.15 to 0.3 mm.

When the distance L is 0.1 mm or more, there is an advantage that if the container is dropped, the wall can be prevented from cracking at the end of the label included inside the wall. This effect becomes more pronounced when the distance L is 0.15 mm or more.

When the distance L is 0.4 mm or less, there is an advantage that the weight of the container can be reduced. This effect becomes more pronounced when the distance L is 0.3 mm or less.

Note that the numerical range of the distance L described above merely indicates a preferable range or a more preferable range. Therefore, it goes without saying that the above-mentioned effects can be achieved even in ranges other than these preferred ranges or even more preferred ranges.

The thickness M of the label is 0.052 mm.
Preferably, the thickness M is within the range of 0.03 to 0.08 mm. Further, it is more preferable that the thickness M is within the range of 0.04 to 0.07 mm.

When the thickness M is 0.03 mm or more, the rigidity of the label increases, so there is an advantage that the label can be prevented from being bent when loaded into a mold. This effect becomes more pronounced when the thickness M is 0.04 mm or more.
When the thickness M is 0.08 mm or less, there is an advantage that the cost of the label can be reduced. This effect becomes more pronounced when the thickness M is 0.07 mm or less.

Note that the numerical range of the thickness M described above merely indicates a preferable range or a more preferable range. Therefore, it goes without saying that the above-mentioned effects can be achieved even in ranges other than these preferred ranges or even more preferred ranges.

The value of (distance L−thickness M)/thickness T is 0.21.
The value of (distance L−thickness M)/thickness T is preferably within the range of 0.07 to 0.53. Further, it is more preferable that the value of (distance L−thickness M)/thickness T is within the range of 0.2 to 0.35.

When the value of (distance L - thickness M)/thickness T is 0.07 or more, it is possible to prevent the wall from cracking at the end of the label included inside the wall when the container is dropped. There is an advantage. This effect becomes more pronounced when the value of (distance L−thickness M)/thickness T is 0.2 or more.

When the value of (distance L−thickness M)/thickness T is 0.53 or less, there is an advantage that the weight of the container can be reduced. This effect becomes more pronounced when the value of (distance L−thickness M)/thickness T is 0.35 or less.

Note that the above-mentioned numerical range of the value of (distance L−thickness M)/thickness T merely indicates a preferable range or a more preferable range. Therefore, it goes without saying that the above-mentioned effects can be achieved even in ranges other than these preferred ranges or even more preferred ranges.

In the vertical section of the container, the vertical distance P from the upper surface of the bottom to the angle change point O is 5.0 mm.
Preferably, the distance P is within the range of 3.0 to 7.0 mm. Further, it is more preferable that the distance P is within a range of 4.0 to 6.0 mm.

When the distance P is 3.0 mm or more, there is an advantage that if the container is dropped, the wall can be prevented from cracking at the end of the label included inside the wall. This effect becomes more pronounced when the distance P is 4.0 mm or more.

When the distance P is 7.0 mm or less, there is an advantage that the weight of the container can be reduced. This effect becomes more pronounced when the distance P is 6.0 mm or less.

Note that the numerical range of the distance P described above merely indicates a preferable range or a more preferable range. Therefore, it goes without saying that the above-mentioned effects can be achieved even in ranges other than these preferred ranges or even more preferred ranges.

In the vertical section of the container, the vertical distance Q from the upper surface of the bottom to the edge of the label included inside the wall is 1.2 mm.
Preferably, the distance Q is within the range of 0.6 to 1.8 mm. Further, it is more preferable that the distance Q is within the range of 1.0 to 1.4 mm.

When the distance Q is 0.6 mm or more, there is an advantage that the label can be formed on the entire upper side of the bottom. This effect becomes more pronounced when the distance Q is 1.0 mm or more.

When the distance Q is 1.8 mm or less, there is an advantage that if the container is dropped, the wall can be prevented from cracking at the end of the label included inside the wall. This effect becomes more pronounced when the distance Q is 1.4 mm or less.

Note that the numerical range of the distance Q described above merely indicates a preferable range or a more preferable range. Therefore, it goes without saying that the above-mentioned effects can be achieved even in ranges other than these preferred ranges or even more preferred ranges.

In the vertical section of the container, the angle θ between the inner line of the wall below the angle change point O and the extension of the inner line of the wall above the angle change point O is 3.0°. ing.
Preferably, the angle θ is within the range of 2.0 to 4.0°. Further, it is more preferable that the angle θ is within a range of 2.5 to 3.5 degrees.

When the angle θ is 2.0° or more, there is an advantage that if the container is dropped, the wall portion can be prevented from cracking at the end of the label included inside the wall portion. This effect becomes more pronounced when the angle θ is 2.5° or more.

When the angle θ is 4.0° or less, there is an advantage that the weight of the container can be reduced. This effect becomes more pronounced when the angle θ is 3.5° or less.

Note that the numerical range of the angle θ described above merely indicates a preferable range or a more preferable range. Therefore, it goes without saying that the above-mentioned effects can be achieved even in ranges other than these preferred ranges or even more preferred ranges.

The vertical height H of the container is 70 mm.
Preferably, the height H is within the range of 50 to 120 mm. Further, it is more preferable that the height H is within a range of 60 to 110 mm.

When the height H is 50 mm or more, there is an advantage that the label can be easily loaded into the mold. This effect becomes more pronounced when the height H is 60 mm or more.

When the height H is 120 mm or less, there is an advantage that the productivity of the container is improved. This effect becomes more pronounced when the height H is 110 mm or less.

Note that the numerical range of the height H described above merely indicates a preferable range or a more preferable range. Therefore, it goes without saying that the above-mentioned effects can be achieved even in ranges other than these preferred ranges or even more preferred ranges.

The maximum horizontal diameter D of the container is 88 mm.
The maximum diameter D is preferably within the range of 50 to 120 mm. Further, it is more preferable that the maximum diameter D is within the range of 60 to 110 mm.

When the maximum diameter D is 50 mm or more, there is an advantage that the label can be easily loaded into the mold. This effect becomes more pronounced when the maximum diameter D is 60 mm or more.

When the maximum diameter D is 120 mm or less, there is an advantage that productivity of the container is improved. This effect becomes more pronounced when the maximum diameter D is 110 mm or less.

Note that the numerical range of the maximum diameter D described above merely indicates a preferable range or a more preferable range. Therefore, it goes without saying that the above-mentioned effects can be achieved even in ranges other than these preferred ranges or even more preferred ranges.

Here, "the maximum horizontal diameter D of the container" is defined as follows. That is, consider two parallel straight lines in the horizontal direction (hereinafter referred to as "parallel lines"). When a container is sandwiched between parallel lines in any direction in a plan view, the distance between the parallel lines is the diameter of the container. Then, the diameter of the container is measured using parallel lines in all directions, and the maximum value among the diameter values is defined as "the maximum horizontal diameter D of the container."

The test conditions and test results for the container drop test are as follows.
A container is filled with water, and a lid material is thermocompression bonded to the flange of the container.
The container is kept at 7°C±3°C for 24 hours.
The container is dropped onto a concrete surface.
The falling heights are 50 cm and 80 cm.
The orientation of the container at the time of the fall is an upright direction with the bottom of the container facing down, and a lateral direction tilted 90° from the upright direction.
The number of falls is 10 times each in the upright direction and the horizontal direction at a fall height of 50 cm and 80 cm, for a total of 40 times.
The test results are as follows. In the conventional container (FIG. 5), there were no cracks in the wall in the upright direction. In the lateral direction, wall cracks were observed in 12 out of 20 tests. The container of the present invention had no cracks in the wall in both the upright and lateral directions.

The horizontal shape of the container is not limited to circular. The horizontal shape of the container may be any other shape, such as an ellipse, a polygon, or a curved shape.

As the label, a film consisting of a single layer, two layers, three layers, etc. can be used.
Materials for the single-layer film include paper, synthetic paper, polypropylene (PP), polyethylene (PE), polystyrene (PS), acrylonitrile-butadiene-styrene copolymer (ABS), polyethylene terephthalate (PET), etc. Printed versions of these can be used.

As the material of the two-layer film, a material obtained by stacking two of the above-mentioned single-layer films and printing between them can be used. Furthermore, a laminate of the above-mentioned single-layer film and a heat-sealable biaxially oriented polypropylene film (HSOPP), or a printed version of these can be used.

Materials for the three-layer film include the above-mentioned single-layer film as the surface layer, aluminum foil, and polyethylene, polypropylene, polyethylene terephthalate, etc., coated with a vapor-deposited layer of metal or metal oxide as the intermediate layer. It is a plastic film with a back layer such as aluminum vapor-deposited polyethylene terephthalate film (VMPET), silicon oxide vapor-deposited polyethylene terephthalate film, or aluminum oxide vapor-deposited polyethylene terephthalate film, as well as ethylene-vinyl alcohol copolymer (EVOH), etc. A laminated layer of the above-mentioned single-layer films or a printed layer can be used as the layer. Moreover, a heat-sealable biaxially stretched polypropylene film (HSOPP) or the like can be employed as the back layer of the above-mentioned three-layer film.

The label is not limited to the single layer, two layer, or three layer films described above. In addition, a film consisting of four or more layers can be used as the label. As the material of the film consisting of four or more layers, the various materials mentioned above or printed materials thereof can be used.

The material for the container is one of thermoplastic resins such as polypropylene (PP), polyethylene (PE), polystyrene (PS), acrylonitrile-butadiene-styrene copolymer (ABS), and polyethylene terephthalate (PET). Alternatively, a combination of any two or more types can be employed.

Foods such as soup, butter, margarine, cheese, and ice cream can be listed as items to be stored in the container. Note that the objects to be accommodated in the container are not limited to foods, and other objects can also be accommodated.

As the lid material, a composite sheet formed by laminating a plastic sheet and a sheet of aluminum or the like can be used. Examples of the material of the plastic sheet include polyethylene terephthalate and polystyrene. The plastic sheet may be a single-layer sheet made of one kind of material, or a composite sheet made of laminated plastic sheets made of multiple kinds of materials.

Hereinafter, a method for manufacturing the container 1 of the present invention will be explained.
The container 1 of the present invention can be manufactured by injection molding.
The injection molding method will be explained. The steps of the injection molding method include a label conveying step, a label loading step, a mold closing step, a molten resin filling step, a mold opening step, and a mold release step.

In the label conveyance process, the label 5 is introduced between the movable mold and the fixed mold which are separated from each other.
In the label loading step, the label 5 is loaded into the movable mold. As a method of loading the label 5, a commonly used method such as air suction or adsorption of the label by static electricity or the like can be adopted.

In the mold closing step, the movable mold is moved toward the fixed mold. When the mold closing process is completed, a space corresponding to the container 1 is formed between the movable mold and the fixed mold.
In the molten resin filling process, molten resin injected from the gate flows into the space corresponding to the container 1. When the molten resin flows through this space, it presses the label 5 against the movable mold. As a result, the label 5 comes into close contact with the lower surface of the movable mold.

In the mold opening process, after the molten resin in the space has cooled, the movable mold is moved in a direction away from the fixed mold. The container 1, which is an injection molded product, moves while being in close contact with the movable mold.
In the mold release step, the injection molded product is released from the movable mold using a stripper (not shown). By this mold release, the container 1 which is an injection molded product can be obtained.

In the container 1, which is an injection molded product, the entire surface of the label 5 is exposed above the bottom 2 and inside the wall 3. Further, the entire back surface of the label 5 is adhered to the bottom 2 and wall 3 of the container 1.

It should be noted that the present invention is not limited to the above-described embodiments, and can of course take various other configurations without departing from the gist of the present invention.

1. Container, 2. Bottom, 3. Wall, 5. Label, 6. Flange, 7. Thread bottom, 8. Stack rib, 11. Crack, 51. End of label. Department

Claims (2)

A container made of an injection molded body,
It has a bottom portion and a wall portion formed upward from the periphery of the bottom portion,
A stacked rib is formed inside the wall portion,
the bottom portion includes a label on an upper side;
the wall portion includes the label inside;
In a vertical section of the container,
An angle change point O exists inside the wall,
Above the angle change point O, the thickness of the wall portion is a predetermined value,
Below the angle change point O, the thickness of the wall increases linearly from the angle change point O;
Above the angle change point O, the thickness T of the wall portion is in the range of 0.6 to 1.0 mm,
the vertical distance Q from the upper surface of the bottom to the edge of the label contained inside the wall is in the range of 0.6 to 1.8 mm;
A distance L from the inner line of the wall at the end of the label to a line extending the inner line of the wall above the angle change point O is in the range of 0.1 to 0.4 mm. ,
The thickness M of the label is within the range of 0.03 to 0.08 mm,
The value of (the distance L - the thickness M)/the thickness T is within the range of 0.07 to 0.53,
A vertical distance P from the upper surface of the bottom to the angle change point O is within a range of 3.0 to 7.0 mm,
An angle θ between the inner line of the wall portion and the extended line below the angle change point O is within a range of 2.0 to 4.0°,
The ends of the label extend at the same height in the circumferential direction inside the wall,
the stacked rib includes an end of the label on a front side;
A container characterized by: A container made of an injection molded body,
It has a bottom portion and a wall portion formed upward from the periphery of the bottom portion,
A stacked rib is formed inside the wall portion,
the bottom portion includes a label on an upper side;
the wall portion includes the label inside;
In a vertical section of the container,
An angle change point O exists inside the wall,
Above the angle change point O, the thickness of the wall portion is a predetermined value,
Below the angle change point O, the thickness of the wall increases linearly from the angle change point O;
Above the angle change point O, the thickness T of the wall portion is in the range of 0.6 to 1.0 mm,
the vertical distance Q from the upper surface of the bottom to the edge of the label contained inside the wall is in the range of 0.6 to 1.8 mm;
A distance L from the inner line of the wall at the end of the label to a line extending the inner line of the wall above the angle change point O is in the range of 0.1 to 0.4 mm. ,
The thickness M of the label is within the range of 0.03 to 0.08 mm,
The value of (the distance L - the thickness M)/the thickness T is within the range of 0.07 to 0.53,
A vertical distance P from the upper surface of the bottom to the angle change point O is within a range of 3.0 to 7.0 mm,
An angle θ between the inner line of the wall portion and the extended line below the angle change point O is within a range of 2.0 to 4.0°,
The ends of the label extend at the same height in the circumferential direction inside the wall,
The stacked rib includes an end of the label on a front side,
the distance P is equal to the vertical distance from the upper surface of the bottom to the upper end of the stacked rib;
A container characterized by:

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