JP2020158173A - Delamination container - Google Patents

Abstract

To provide a delamination container capable of reducing the residual amount of a content.SOLUTION: According to the present invention, a delamination container has a container body having an outer shell and an inner bag, and the inner bag is configured to shrink as a content decreases. The container body includes a storage part and a mouth part. The mouth part is provided with an engagement part to which a discharge member can be mounted, and is provided so as to extend from an upper end of the storage part. The storage part has a lower wall thickness ratio of 0.30 to 0.95 in at least one outer peripheral position. The lower wall thickness ratio is defined by a lower average wall thickness/overall average wall thickness at the outer peripheral position. Assuming that the total height of the storage part is H, the overall average wall thickness is calculated by averaging the wall thicknesses at a plurality of height positions within the range of 0.06H to 0.96H from the bottom surface of the storage part at the outer peripheral position. The lower average wall thickness is calculated by averaging the wall thicknesses at a plurality of height positions within the range of 0.06H to 0.30H from the bottom surface of the storage part at the outer peripheral position.SELECTED DRAWING: Figure 1

Description

The present invention relates to a laminated stripping container.

Patent Document 1 discloses a laminated peeling container having a container body having an outer shell and an inner bag and the inner bag shrinking as the contents decrease.

Japanese Unexamined Patent Publication No. 2015-101396

The container of Patent Document 1 is configured to discharge the contents by compressing the outer shell, but in such a container, when the contents are highly viscous like mayonnaise. However, there is a problem that the contents tend to remain on the bottom of the inner bag, and the remaining contents cannot be discharged even if the outer shell is strongly compressed.

The present invention has been made in view of such circumstances, and provides a laminated peeling container capable of reducing the residual amount of contents.

According to the present invention, a laminated peeling container having an outer shell and an inner bag and having a container body configured such that the inner bag contracts as the contents decrease, and the container body is: The accommodating portion and the mouth portion are provided, the mouth portion is provided with an engaging portion on which a discharge member can be mounted, and extends from the upper end of the accommodating portion, and the accommodating portion is provided at at least one outer peripheral position. The lower wall thickness ratio is 0.30 to 0.95, and the lower wall thickness ratio is defined by the lower average wall thickness / overall average wall thickness at the outer peripheral position, and the total height of the accommodating portion is defined as H. Then, the overall average wall thickness is calculated by averaging the wall thicknesses at a plurality of height positions within the range of 0.06H to 0.96H from the bottom surface of the housing portion at the outer peripheral position, and the lower average wall thickness is calculated. A laminated stripping container is provided in which the thickness is calculated by averaging the wall thicknesses at a plurality of height positions within a range of 0.06H to 0.30H from the bottom surface of the housing portion at the outer peripheral position.

As a result of diligent studies, the present inventor has found that the residual amount of the contents can be reduced by reducing the wall thickness at the lower part of the accommodating portion as specified above, and the present invention has been completed. It was.

Hereinafter, various embodiments of the present invention will be illustrated. The embodiments shown below can be combined with each other.
Preferably, in the above-described laminated peeling container, the bottom of the accommodating portion is provided with an elongated cutting portion, and the accommodating portion has two outer peripheral positions parallel to the direction in which the cutting portion extends. A laminated peeling container having a lower wall thickness ratio of 0.30 to 0.95 at at least three of the two outer peripheral positions perpendicular to the extending direction of the cutting portion.
Preferably, it is the laminated stripping container described above, wherein the lower wall thickness ratio is 0.40 to 0.85.
Preferably, it is a laminated peeling container having an outer shell and an inner bag and having a container body configured such that the inner bag contracts as the contents decrease, and the container body is the accommodating portion. , The mouth is provided with an engaging portion to which a discharge member can be mounted, and is provided so as to extend from the upper end of the accommodating portion, the accommodating portion at at least one outer peripheral position. The thickness index ratio is 0.30 to 0.99, and the lower wall thickness index ratio is defined by the lower average wall thickness index / overall average wall thickness index at the outer peripheral position, and the overall average wall thickness index is , The lower average wall thickness index calculated by averaging the product of the wall thickness and the outer diameter ratio at a plurality of height positions within the range of 0.06H to 0.96H from the bottom surface of the housing portion at the outer peripheral position. Is calculated by averaging the product of the wall thickness and the outer diameter ratio at a plurality of height positions within the range of 0.06H to 0.30H from the bottom surface of the accommodating portion at the outer peripheral position, and the outer diameter ratio is , A laminated peeling container calculated by dividing the outer diameter of the accommodating portion for the outer peripheral position at each height position by the outer diameter of the mouth portion.
Preferably, in the above-described laminated peeling container, an elongated cutting portion is provided at the bottom of the housing portion, and the housing portion has two outer peripheral positions parallel to the direction in which the cutting portion extends and the said housing portion. It is a laminated peeling container having a lower wall thickness index ratio of 0.30 to 0.99 at at least three of the two outer peripheral positions perpendicular to the extending direction of the cutting portion.
Preferably, it is the laminated stripping container described above, wherein the lower wall thickness index ratio is 0.40 to 0.95.
Preferably, in the laminated peeling container described above, the outer shell is provided with an outside air introduction hole, and the outside air introduction hole is provided in the range of 0.01H to 0.48H from the bottom surface of the accommodating portion. , Laminated peeling container.
Preferably, in the laminated peeling container described above, the accommodating portion is calculated by averaging the flatnesses at a plurality of height positions within the range of 0.06H to 0.96H from the bottom surface of the accommodating portion. It is a laminated peeling container having an overall average flatness of 1.10 to 2.50.

It is a front view of the laminated peeling container 1 of one embodiment of the present invention in a state where the cap 4 is removed from the container main body 3. It is a bottom view of the container body 3. It is an end view of AA in FIG. It is a cross-sectional view of BB in FIG. It is a partial cross-sectional view which shows the state after shrinkage | region of the inner bag 14 in the laminated peeling container 1 of one Embodiment of this invention. It is a partial cross-sectional view which shows the state after the inner bag 14 has shrunk in the laminated peeling container 1 which the wall thickness of the accommodating part 7 is forbidden.

Hereinafter, embodiments of the present invention will be described. The various features shown in the embodiments shown below can be combined with each other. In addition, the invention is independently established for each feature.

As shown in FIG. 1, the laminated peeling container 1 according to the embodiment of the present invention includes a container body 3, a cap 4, and a valve member 5. The container body 3 contains a viscous content such as mayonnaise or ketchup.

The container body 3 includes a storage portion 7 and a mouth portion 9. The mouth portion 9 includes an engaging portion 9d to which a cap (an example of a discharge member) 4 can be attached. The engaging portion 9d is a male screw portion in the case of a screw type cap, and is an annular protrusion protruding in the circumferential direction in the case of a stopper type cap. The mouth portion 9 is provided so as to extend from the upper end 7b of the accommodating portion 7. The cap 4 has a check valve so that the contents can be discharged, but the outside air does not flow into the container body 3. The mouth portion 9 has a substantially cylindrical shape. The accommodating portion 7 has a larger circumscribed circle diameter than the mouth portion 9. All or most of the contents are housed in the housing portion 7, and the contents are discharged to the outside through the mouth portion 9 and the cap 4. Since the laminated peeling container 1 of the present embodiment is a squeeze type, a cap is attached to the mouth portion 9, but the present invention may be applied to a pump type laminated peeling container, in which case, the mouth. A pump having a check valve (an example of a discharge member) is mounted on the portion 9.

The accommodating portion 7 may have a cylindrical shape, at least a part thereof may have a flat shape, or the entire accommodating portion 7 may have a flat shape. Here, the flatness is defined by Equation 1. As shown in FIG. 3, the minimum outer diameter D1 and the maximum outer diameter D2 are the portions where the distance between the facing outer surfaces of the accommodating portion 7 is the minimum and the maximum at the height position where the flatness is measured, respectively. The distance between the outer surfaces.
(Equation 1) Flatness = maximum outer diameter D2 / minimum outer diameter D1 in a cross section perpendicular to the central axis C of the mouth portion 9.

As shown in FIG. 1, assuming that the total height of the accommodating portion 7 is H, the flatness at a plurality of height positions within the range of 0.06H to 0.96H from the bottom surface 7a of the accommodating portion 7 is calculated by averaging. The overall average flatness is, for example, 1.10 to 2.50, preferably 1.20 to 2.00, and specifically, for example, 1.10, 1.20, 1.30, 1. 40, 1.50, 1.60, 1.70, 1.80, 1.90, 2.00, 2.10, 2.20, 2.30, 2.40, 2.50, where It may be in the range between any two of the illustrated values. The plurality of height positions are, for example, height positions at two points at both ends when the range of 0.06H to 0.96H is equally divided into 15 sections, and 14 points between them. The larger the overall average flatness, the easier it is for the inner bags 14 (see FIG. 3) to come into close contact with each other, and the amount of residual contents tends to increase. Therefore, the technique of the present invention has great technical significance especially in a container having a large overall average flatness. Further, the lower average flatness calculated by averaging the flatnesses at a plurality of height positions within the range of 0.06H to 0.30H from the bottom surface 7a of the accommodating portion 7 is, for example, 1.10 to 2.50. It is preferably 1.20 to 2.00, and specifically, for example, 1.10, 1.20, 1.30, 1.40, 1.50, 1.60, 1.70, 1 It is .80, 1.90, 2.00, 2.10, 2.20, 2.30, 2.40, 2.50, which is within the range between any two of the numerical values exemplified here. May be good.

The flatness may be uniform over the entire accommodating portion 7, and may be gradually reduced as it approaches the mouth portion 9, for example.

As shown in FIGS. 3 and 4, the container body 3 includes an outer shell 12 and an inner bag 14 in the accommodating portion 7 and the mouth portion 9. As the contents decrease, the inner bag 14 contracts away from the outer shell 12. Before filling the contents, the inner bag 14 may be peeled off from the outer shell 12 and then the contents may be filled in the inner bag 14. When the contents are discharged from the inner bag 14, the inner bag 14 may be filled. May be peeled off from the outer shell 12.

The outer shell 12 is formed to be thicker than the inner bag 14 so as to have high resilience. The outer shell 12 is composed of, for example, polyolefins such as low-density polyethylene, linear low-density polyethylene, high-density polyethylene, polypropylene, ethylene-propylene copolymer and a mixture thereof. The outer shell 12 may have a plurality of layers. The inner bag 14 is preferably composed of a plurality of layers. For example, an EVOH layer made of ethylene-vinyl alcohol copolymer (EVOH) resin is used for the layer in contact with the outer layer, and for example, low density polyethylene, linear low density polyethylene, high density polyethylene is used for the layer in contact with the contents. , Polypropylene, ethylene-propylene copolymer and an inner layer made of polyolefin such as a mixture thereof can be used. Then, it is preferable to use an adhesive layer between the EVOH layer and the inner surface layer.

The container body 3 can be formed by direct blow molding. In this case, the container body 3 is blow-molded by using a pair of split dies to blow-mold a molten tubular laminated parison extruded from an extrusion head. Can be formed. The laminated parison has a layer structure similar to that of the outer shell 12 and the inner bag 14. In one example, the laminated parison includes a polyolefin layer serving as an outer shell 12, an EVOH layer serving as an inner bag 14, an adhesive layer, and an inner surface layer in this order from the outer surface side. As shown in FIGS. 2 and 4, at the bottom of the accommodating portion 7, there is a cutting portion 7d formed by crushing a laminated parison with a pair of split dies. The bottom of the container body 3 is closed by welding the facing surfaces of the parisons to each other in the cutting portion 7d. The cutting portion 7d has an elongated shape.

As shown in FIG. 3, the outer shell 12 of the container body 3 is provided with an outside air introduction hole 15. The outside air introduction hole 15 is a hole for introducing outside air into the intermediate space 21 between the outer shell 12 and the inner bag 14. A valve member 5 for adjusting the inflow and outflow of air into the intermediate space 21 between the outer shell 12 and the inner bag 14 can be attached to the outside air introduction hole 15.

The valve member 5 preferably includes a tubular portion 5a mounted in the outside air introduction hole 15 and a moving body 5b that can move within the tubular portion 5a. The moving body 5b is, for example, spherical. The valve member 5 is opened and closed by the moving body 5b moving relative to the tubular portion 5a.

The laminated peeling container 1 is a so-called squeeze type container, and the contents can be discharged by compressing the outer shell 12 in a state where the mouth portion 9 is inclined downward. As the outer shell 12 is compressed, the valve member 5 is closed, and as a result, the pressure in the space between the outer shell 12 and the inner bag 14 increases, and the pressure compresses the inner bag 14 and discharges the contents. .. After discharging the contents, the outside air is introduced into the intermediate space 21 between the outer shell 12 and the inner bag 14 through the outside air introduction hole 15, and the outer shell 12 is restored to its original shape.

The inner bag 14 contracts as the contents decrease, but when the contents are discharged, the outer shell 12 is usually compressed by pressing the vicinity of the center in the height direction of the accommodating portion 7, so that the height of the accommodating portion 7 is increased. The inner bag 14 is easily deformed near the center in the vertical direction. For this reason, in a container as shown in FIG. 6, in which the wall thickness is substantially uniform over the entire housing portion 7, or in a container in which the wall thickness at the lower portion of the housing portion 7 is larger than the overall average wall thickness, the contents are included. When the remaining amount is small, the opposing inner surfaces of the inner bag 14 are in close contact with each other near the center in the height direction of the accommodating portion 7, and the contents are likely to remain under the contacted portion. The contents underneath the closely contacted portion are difficult to be discharged even if the outer shell 12 is strongly compressed. When the contents are highly viscous, the contents are particularly likely to remain.

On the other hand, in the laminated peeling container 1 of the present embodiment, as shown in FIG. 4, the wall thickness at the lower portion of the accommodating portion 7 is reduced. The wall thickness of the accommodating portion 7 is the sum of the wall thickness of the outer shell 12 and the wall thickness of the inner bag 14 in the accommodating portion 7, and the ratio of the wall thickness of the outer shell 12 to the wall thickness of the inner bag 14 is the accommodating portion. Since it is constant regardless of the wall thickness of 7, if the wall thickness of the accommodating portion 7 is thin, the wall thickness of the inner bag 14 is also thin. Therefore, if the wall thickness at the lower part of the accommodating portion 7 is reduced, the wall thickness at the lower part of the inner bag 14 is reduced. As a result, the rigidity of the inner bag 14 is lowered at the lower part of the inner bag 14, and the inner bag 14 is easily deformed.

In such a laminated peeling container 1, since the lower portion of the inner bag 14 is easily deformed, the inner bag 14 is preferentially contracted from the lower portion, and is likely to be as shown in FIG. When the inner bag 14 is deformed in this way, the contents are unlikely to remain, so that the residual amount of the contents is reduced.

The lower wall thickness ratio of the accommodating portion 7 is preferably 0.30 to 0.95, more preferably 0.40 to 0.85 at at least one outer peripheral position. The outer peripheral position is a position on the outer circumference of the accommodating portion 7 when the accommodating portion 7 is viewed from the bottom surface 7a side. For example, in the bottom view shown in FIG. 2, two positions parallel to the extending direction of the cutting portion 7d. The outer peripheral positions PL-1 and PL-2 and the two outer peripheral positions PL90-1 and PL90-2 perpendicular to the direction in which the cutting portion 7d extends.

The lower wall thickness ratio is defined by the lower average wall thickness / overall average wall thickness at each outer peripheral position. The overall average wall thickness is calculated by averaging the wall thicknesses at a plurality of height positions within the range of 0.06H to 0.96H from the bottom surface 7a of the accommodating portion 7 at each outer peripheral position. The lower average wall thickness is calculated by averaging the wall thicknesses at a plurality of height positions within the range of 0.06H to 0.30H from the bottom surface 7a of the accommodating portion 7 at each outer peripheral position. The plurality of height positions are, for example, height positions at two points at both ends when the range of 0.06H to 0.96H is equally divided into 15 sections, and 14 points between them. The wall thickness is measured at each outer peripheral position and at each height position on a plane passing through the central axis C.

When the lower wall thickness ratio defined in this way is within the above range, the lower portion of the inner bag 14 is likely to shrink, and the residual amount of the contents is reduced. Specifically, the lower wall thickness ratio is, for example, 0.30, 0.35, 0.40, 0.45, 0.50, 0.55, 0.60, 0.65, 0.70, 0. It is 75, 0.80, 0.85, 0.90, 0.95, and may be within the range between any two of the numerical values exemplified here.

If the lower wall thickness ratio is within the above range at at least one outer peripheral position, the effect of reducing the residual contents is achieved, but among the outer peripheral positions PL-1, PL-2, PL90-1, and PL90-2. It is preferable that the lower wall thickness ratio is within the above range at at least three places. In this case, the effect of reducing the residual content is more effectively exhibited.

The lower wall thickness index ratio of the accommodating portion 7 is preferably 0.30 to 0.99, and more preferably 0.30 to 0.99 at at least one outer peripheral position.

The lower wall thickness index ratio is defined by the lower average wall thickness index / overall average wall thickness index at each outer peripheral position. The overall average wall thickness index is calculated by averaging the product of the wall thickness and the outer diameter ratio at a plurality of height positions within the range of 0.06H to 0.96H from the bottom surface 7a of the accommodating portion 7 at each outer peripheral position. To. The lower average wall thickness index is calculated by averaging the product of the wall thickness and the outer diameter ratio at a plurality of height positions within the range of 0.06H to 0.30H from the bottom surface 7a of the accommodating portion 7 at each outer peripheral position. To.

The outer diameter ratio is calculated by dividing the outer diameter of the accommodating portion 7 for each outer peripheral position at each height position by the outer diameter of the mouth portion 9. The outer diameter of the accommodating portion 7 for each outer peripheral position means the distance between the target outer peripheral position A and the outer peripheral position B facing the outer peripheral position A with the central axis C in between. Such an outer diameter is measured at each predetermined height position. For example, when the outer peripheral position A is PL-1 or PL-2, the outer diameter of the accommodating portion 7 at the height position 0.12H is D2 shown in FIG. When the outer peripheral position A is PL90-1 or PL90-2, the outer diameter of the accommodating portion 7 at the height position 0.12H is D1 shown in FIG.

The outer diameter of the mouth portion 9 is measured at the narrowest portion (the portion having the smallest outer diameter) 9a of the mouth portion 9. The outer diameter ratio obtained in this way is a measure of how much the parison is stretched during the production of the container body 3. The larger the outer diameter ratio, the greater the degree to which the parison is stretched, and the thinner the wall thickness of the accommodating portion 7. Therefore, if the wall thickness of the parison is constant in the extrusion direction of the parison, the product of the wall thickness and the outer diameter ratio is substantially constant over the entire accommodating portion 7. In such a container, the inner bag 14 tends to shrink as shown in FIG. 6 and the residual amount of the contents tends to increase.

On the other hand, when the lower wall thickness index ratio is within the above range, the lower part of the inner bag 14 is likely to shrink, and the residual amount of the contents is reduced. Specifically, the lower wall thickness index ratio is, for example, 0.30, 0.35, 0.40, 0.45, 0.50, 0.55, 0.60, 0.65, 0.70, 0. It is .75, 0.80, 0.85, 0.90, 0.95, 0.99, and may be within the range between any two of the numerical values exemplified here.

If the lower wall thickness index ratio is within the above range at at least one outer peripheral position, the effect of reducing the residual content is exhibited, but among the outer peripheral positions PL-1, PL-2, PL90-1, and PL90-2. It is preferable that the lower wall thickness index ratio is within the above range at at least three locations. In this case, the effect of reducing the residual content is more effectively exhibited.

In the accommodating portion 7, at least one of the lower wall thickness ratio and the lower wall thickness index ratio may be within the above range, and it is preferable that both are within the above range.

The outside air introduction hole 15 is preferably provided in the range of 0.01H to 0.50H from the bottom surface 7a of the accommodating portion 7. Since the inner bag 14 tends to shrink preferentially from a position close to the outside air introduction hole 15, by providing the outside air introduction hole 15 at such a position, the portion of the inner bag 14 close to the bottom surface 7a shrinks preferentially. It becomes easier to do so and the residue of the contents is suppressed. Specifically, the positions where the outside air introduction holes 15 are provided are, for example, 0.01H, 0.06H, 0.12H, 0.18H, 0.24H, 0.30H, 0.36H, 0.42H, 0.48H. It may be within the range between any two of the numerical values exemplified here.

1. 1. Fabrication of Container Body 3 The shape described in the above embodiment (content capacity of inner bag 14: 360 mL) is formed by blow molding a molten tubular laminated parison extruded from an extrusion head using a pair of split dies. The container body 3 having the above was prepared. As the laminated parison, one provided with a polypropylene layer, an EVOH layer, an adhesive layer, and a polyethylene layer in this order from the outer surface side was used. The wall thickness ratio of the laminated parison was: outer layer (polypropylene layer): inner layer (total of EVOH layer, adhesive layer, and polyethylene layer) = 1: 0.25.

By changing the wall thickness distribution of the laminated parison, the container bodies 3 of Examples 1 to 3 and Comparative Example 1 were prepared. Since these container bodies 3 were manufactured using the same split mold, their outer shapes are the same.

In Comparative Example 1, the lower average wall thickness of the accommodating portion 7 was made larger than the overall average wall thickness.
In Example 1, the lower average wall thickness of the accommodating portion 7 was made smaller than the overall average wall thickness. Further, the wall thicknesses of PL-1 and PL-2 are made smaller than the wall thicknesses of PL90-1 and PL90-2.
In Example 2, the variation in wall thickness in the circumferential direction was made smaller than that in Example 1.
In Example 3, the wall thickness of PL90-2 was made larger than the wall thickness of PL90-1.

2. 2. Measurement of the outer diameter of the container body 3 With respect to the container body 3 of Example 1, the outermost position PL parallel to the direction in which the cutting portion 7d extends and the outer peripheral position PL90 perpendicular to the direction in which the cutting portion 7d extends are the maximum of the mouth portion 9. The outer diameter was measured at the height positions of 16 points of the narrow portion 9a and the accommodating portion 7. The results are shown in Table 1.

3. 3. Measurement of the wall thickness of the accommodating portion 7 With respect to the outer peripheral positions PL-1, PL-2, PL90-1, and PL90-2 of the container main body 3 of Examples 1 to 3 and Comparative Example 1, the meat is at a height of 16 points. The thickness was measured. The results are shown in Tables 2 to 5.

4. Residual amount measurement test of contents A preliminary peeling is performed in which the outside air introduction hole 15 is formed in the container main body 3 of Examples 1 to 3 and Comparative Example 1 at the position shown in FIG. went. Next, the valve member 5 was attached to the outside air introduction hole 15.

Next, after filling the inner bag 14 with a specified amount of mayonnaise, a cap 4 having a check valve was attached to the mouth portion 9.

Next, with the cap 4 facing downward, the vicinity of the center in the height direction of the accommodating portion 7 was compressed with one hand to discharge the contents. Compression of the accommodating portion 7 and restoration of the shape of the outer shell 12 by decompression were repeated until the contents were not discharged. This repetition was repeated until the contents were no longer ejected. After the discharge of the contents was completed, the residual amount of the contents was measured. The results are shown in Table 6. In all the examples and comparative examples, the main residual liquid portion was the bottom of the inner bag 14. As shown in Table 6, in all the examples, the residual amount of the contents was smaller than that in the comparative example.

1: Laminated peeling container 3: Container body 4: Cap 5: Valve member 5a: Cylinder part 5b: Moving body 7: Accommodating part 7a: Bottom surface 7b: Upper end 7d: Cutting part 9: Mouth part 9a: Narrowest part 9d: Engagement Joint part 12: Outer shell 14: Inner bag 15: Outside air introduction hole 21: Intermediate space C: Central axis

Claims (8)

A laminated peeling container having an outer shell and an inner bag and having a container body configured such that the inner bag contracts as the contents decrease.
The container body includes an accommodating portion and a mouth portion.
The mouth portion is provided with an engaging portion to which a discharge member can be mounted, and is provided so as to extend from the upper end of the accommodating portion.
The accommodating portion has a lower wall thickness ratio of 0.30 to 0.95 at at least one outer peripheral position.
The lower wall thickness ratio is defined by the lower average wall thickness / overall average wall thickness at the outer peripheral position.
Assuming that the total height of the accommodating portion is H
The overall average wall thickness is calculated by averaging the wall thicknesses at a plurality of height positions within the range of 0.06H to 0.96H from the bottom surface of the housing portion at the outer peripheral position.
The lower average wall thickness is a laminated peeling container calculated by averaging the wall thicknesses at a plurality of height positions within a range of 0.06H to 0.30H from the bottom surface of the housing portion at the outer peripheral position. The laminated peeling container according to claim 1.
An elongated cut-out portion is provided at the bottom of the accommodating portion.
The lower wall thickness ratio of the accommodating portion is 0.30 at at least three of the two outer peripheral positions parallel to the extending direction of the cutting portion and the two outer peripheral positions perpendicular to the extending direction of the cutting portion. Laminated stripping container of ~ 0.95. The laminated peeling container according to claim 1 or 2.
A laminated stripping container having a lower wall thickness ratio of 0.40 to 0.85. A laminated peeling container having an outer shell and an inner bag and having a container body configured such that the inner bag contracts as the contents decrease.
The container body includes an accommodating portion and a mouth portion.
The mouth portion is provided with an engaging portion to which a discharge member can be mounted, and is provided so as to extend from the upper end of the accommodating portion.
The accommodating portion has a lower wall thickness index ratio of 0.30 to 0.99 at at least one outer peripheral position.
The lower wall thickness index ratio is defined by the lower average wall thickness index / overall average wall thickness index at the outer peripheral position.
The overall average wall thickness index is calculated by averaging the product of the wall thickness and the outer diameter ratio at a plurality of height positions within the range of 0.06H to 0.96H from the bottom surface of the housing portion at the outer peripheral position. ,
The lower average wall thickness index is calculated by averaging the product of the wall thickness and the outer diameter ratio at a plurality of height positions within the range of 0.06H to 0.30H from the bottom surface of the housing portion at the outer peripheral position. ,
The outer diameter ratio is a laminated peeling container calculated by dividing the outer diameter of the accommodating portion for the outer peripheral position at each height position by the outer diameter of the mouth portion. The laminated peeling container according to claim 4.
An elongated cutting edge is provided at the bottom of the accommodating portion.
The lower wall thickness index ratio of the accommodating portion is 0. At least three of the two outer peripheral positions parallel to the extending direction of the cutting portion and the two outer peripheral positions perpendicular to the extending direction of the cutting portion. Laminated stripping container, 30-0.99. The laminated peeling container according to claim 3 or 4.
The laminated peeling container having a lower wall thickness index ratio of 0.40 to 0.95. The laminated peeling container according to any one of claims 1 to 6.
The outer shell is provided with an outside air introduction hole.
The outside air introduction hole is a laminated peeling container provided in the range of 0.01H to 0.48H from the bottom surface of the accommodating portion. The laminated peeling container according to any one of claims 1 to 7.
The accommodating portion has an overall average flatness of 1.10 to 2.50 calculated by averaging the flatnesses at a plurality of height positions within the range of 0.06H to 0.96H from the bottom surface of the accommodating portion. Is a laminated peeling container.