WO2017183502A1 - Peelable laminated container - Google Patents

Abstract

Provided is a peelable laminated container with improved usability. The present invention provides a peelable laminated container comprising a container body which includes an outer shell and an inner bag, the inner bag contracting as the content decreases. The peelable laminated container is provided with at least one of the configurations (1) to (3): (1) the container body is provided with an accommodating portion for accommodating the content, and an opening portion for discharging the content from the accommodating portion, wherein the accommodating portion comprises a front surface-side pressing surface and a rear surface-side pressing surface that are opposed to each other and that are pressed when the container body is compressed, and a pair of linking surfaces linking the front surface-side pressing surface and the rear surface-side pressing surface, the linking surfaces being configured such that the inner bag deforms to become depressed toward the inside of the container body as the content decreases; (2) a plurality of substantially parallel ridge portions are formed in a circumferential surface of a body portion, the ridge portions being formed at an angle with respect to the height direction of the container; and (3) the body portion includes a constricted portion at substantially the center thereof, the constricted portion being formed with an irregular portion in the circumferential direction.

Description

Delamination container

The present invention relates to a delamination container in which an inner bag shrinks with a decrease in contents.

Also known is a delamination container that includes an outer shell and an inner bag and that shrinks as the contents are reduced (for example, Patent Documents 1 to 4). In such a container, it is assumed that the contents are discharged by compressing the outer shell, and the outer shell is restored to the original shape after the contents are discharged.

In the delamination container disclosed in Patent Document 2, a valve is built in a cap attached to the mouth of the container body. In the delamination container disclosed in Patent Document 3, a valve is provided inside the trunk of the outer shell.

By the way, in the laminated peeling container having the outer shell and the inner bag as described above and shrinking the inner bag as the contents are reduced, it is important that the inner bag is peeled off smoothly. If the inner bag does not peel quickly from the outer shell as the contents are poured out, smooth pouring may be difficult, causing troubles such as deformation of the outer shell.

Therefore, attempts have been made to make it easier to peel the inner bag by devising the container shape (see, for example, Patent Document 4). In Patent Document 4, an outer layer rib extending from the spout side to the bottom side is provided in the body portion of the outer layer body, and the cross-sectional shape of the inner surface of the outer layer rib facing the inner layer body side is undercut. There is disclosed a delamination container in which the inner layer body is provided with an inner layer rib having a cross-sectional shape corresponding to the inner surface of the outer layer rib, and a gap is provided between the outer layer rib and the inner layer rib. In such a delamination container, since it can be allowed to flow between the outer layer body and the inner layer body through a gap, the inner layer body can be easily peeled off from the outer layer body, and the inner layer body of this delamination container can be separated poorly or the outer layer body. It is possible to prevent the deformation.

Japanese Patent No. 4055185 JP 2013-35557 A JP-A-4-267727 JP 2014-91538 A

(First viewpoint)
When the inventor has evaluated the discharge performance of the container of Patent Document 1, when the amount of the remaining content is small, when the outer shell is greatly deformed in order to discharge the content, the outer shell has the original shape. It was found that it may be difficult to restore.

(Second perspective)
As described in Patent Document 4, a gap is provided between the outer layer rib and the inner layer rib, and after the inner layer body is peeled from the outer layer body, the inner layer rib of the inner layer body is difficult to fit into the outer layer rib of the outer layer body. Thus, in the configuration in which the gap is maintained between the outer layer body and the inner layer body around the rib, a force that positively peels the inner layer does not work, and the inner layer peeling does not necessarily proceed smoothly. There is a problem that it cannot be done.

(Third viewpoint)
By the way, in this type of delamination container, the contents cannot be poured out simply by tilting the container, and it is necessary to hold the container and perform so-called squeeze when pouring out. Therefore, it is desirable that the delamination container be in a form that is easy to grasp and squeeze.

Also, in the case of a relatively large container, there is a problem that it is easy to drop carelessly due to an increase in weight. In the case of the delamination container, it is necessary to squeeze with the mouth part down, but for example, if it is taken out from the refrigerator and water droplets or the like are attached, it is slippery and tends to induce a fall. If a heavy container falls, it may cause damage to the container itself, the floor surface, the table surface, or the like.

Furthermore, in the case of a laminated peeling container, it is important that the inner bag peels smoothly. If the inner bag does not peel quickly from the outer shell as the contents are poured out, smooth pouring may be difficult, causing troubles such as deformation of the outer shell.

The present invention has been made in view of such circumstances, and provides a delamination container that can improve the feeling of use.

According to the present invention, there is provided a delamination container including a container body having an outer shell and an inner bag, and the inner bag shrinks as the contents are reduced, and includes at least one of configurations (1) to (3) With one. (1) The said container main body is provided with the accommodating part which accommodates the said content, and the opening part which discharges the said content from the said accommodating part, and the said accommodating part mutually opposes when compressing the said container main body A front-side pressing surface and a back-side pressing surface, and a pair of connecting surfaces that connect the front-side pressing surface and the back-side pressing surface, and the connecting surface includes the inner bag as the contents decrease. It is comprised so that it may deform | transform so that it may dent toward the inner side of the said container main body. (2) A plurality of ridge line portions are formed substantially parallel to each other on the circumferential surface of the body portion, and each ridge line portion is formed obliquely with respect to the height direction of the container. (3) A constricted portion is provided at substantially the center of the body portion, and the constricted portion is provided with an uneven portion in the circumferential direction.

Configurations (1) to (3) correspond to the first to third aspects of the present invention.

In the delamination container having the configuration (1), the inner bag is configured to be deformed so as to be recessed toward the inner side of the container body as the contents are reduced on the connection surface. For this reason, the bellows structure is formed in the inner bag at the connecting surface when the amount of the contents is reduced. In this state, when the outer shell is compressed by pressing the front side pressing surface and the rear side pressing surface and the contents are discharged, the bellows structure of the inner bag acts as a spring, and the front side pressing surface and the rear side pressing surface Applying force to the outer shell in the direction of increasing the distance. This force makes it easier to restore the outer shell to its original shape. In addition, since the inner bag is not pinched in the outer shell by forming the bellows structure in the inner bag, it is possible to suppress the deterioration of the restoring property of the outer shell due to the inner bag being pinched in the outer shell, Usability can be improved.

In the delamination container having the configuration (2), when the body part is pressed by forming the ridge line part obliquely on the circumferential surface of the body part, not only the ridge line part of the pressing part but also the surrounding ridge line part The shape is reversed. In a laminated peeling container having an outer shell and an inner bag, the peeling of the inner bag proceeds from the reverse position of the ridge line portion, and therefore the peeling of the inner bag proceeds in a wide range. For this reason, an inner bag can be smoothly peeled with the pressing operation etc. at the time of use, and a usability | use_condition can be improved.

In the delamination container having the configuration (3), since the constricted part is formed, it becomes easy to grasp by grasping this part. In addition, since the concavity and convexity are formed in the constricted portion, finger catching is improved, squeezing is easy, and inadvertent dropping is prevented in advance. Furthermore, the formation of the concavo-convex portion leads to promotion of peeling of the inner bag, and can improve the feeling of use.

Hereinafter, various embodiments of the present invention will be exemplified. The following embodiments can be combined with each other.
Preferably, the configuration (1) is provided.
Preferably, the radius of curvature RC of the connecting surface is larger than a radius RI of a circle inscribed in the front side pressing surface and the back side pressing surface in a cross section perpendicular to the central axis of the container body.
Preferably, RC / RI ≧ 1.2.
Preferably, the connection surface is curved toward the inside of the container body in a cross section that is parallel to the central axis of the container body and passes through the connection surface.
Preferably, the radius of curvature RA of at least one of the front-side pressing surface and the back-side pressing surface is inwardly inscribed in the front-side pressing surface and the back-side pressing surface in a cross section perpendicular to the central axis of the container body. It is larger than the radius RI of the tangent circle.
Preferably, RA / RI ≧ 1.2.
Preferably, at least one of the front-side pressing surface and the back-side pressing surface is parallel to a central axis of the container main body, and in a cross section passing through the front-side pressing surface and the back-side pressing surface, the container Curved toward the inside of the body.
Preferably, the accommodating portion includes a ridge line portion provided so as to surround a central axis of the container body, and the front-side pressing surface and the back-side pressing surface are further away from the mouth than the ridge line portion. Provided in position.
Preferably, the accommodating portion includes a reduced diameter surface that decreases in diameter toward the mouth portion at a position closer to the mouth portion than the ridge line portion, and the reduced diameter surface is parallel to a central axis of the container body. And in a cross section passing through the connecting surface, it is curved toward the inside of the container body.
Preferably, the outer shell includes an outside air introduction hole communicating with the outer space of the container body on the reduced diameter surface.
Preferably, at least one of the front-side pressing surface and the back-side pressing surface includes a base surface and a panel surface formed by recessing the base surface, and is perpendicular to a central axis of the container body and In a cross section passing through the base surface, a distance between the front-side pressing surface and the back-side pressing surface is longer than a distance between the pair of connecting surfaces.
Preferably, in a cross section perpendicular to the central axis of the container body and passing through the panel surface, a distance between the front-side pressing surface and the back-side pressing surface is substantially equal to a distance between the pair of connecting surfaces. be equivalent to.
Preferably, the outer shell includes an outside air introduction hole communicating with an outer space of the container body on the base surface.
Preferably, the inner bag includes a layer formed of a resin containing a cycloolefin polymer.
Preferably, the configuration (2) is provided.
Preferably, a region between the ridge line part is a concave part having a curved surface.
Preferably, an inclination angle of the ridge line portion is 40 ° to 80 ° with respect to a horizontal plane.
Preferably, the ridge portion is formed in a spiral shape.
Preferably, it has a mouth part and a body part, and between the mouth part and the body part, has a shoulder part that gradually decreases in diameter toward the mouth part, and the ridge line part is not formed on the shoulder part. .
Preferably, the configuration (3) is provided.
Preferably, the constricted portion has an inclined surface with a diameter gradually decreasing from the mouth side toward the bottom side, and an inclined surface with a diameter gradually decreasing from the bottom side toward the mouth side, and at least one inclined surface. The protrusions protruding from the inclined surface are intermittently formed in the circumferential direction, and the protrusions and protrusions are formed as protrusions, and the grooves between the protrusions are formed as recesses and protrusions as the protrusions and recesses in the circumferential direction. Has been.
Preferably, the uneven portion is formed on both the upper and lower inclined surfaces of the constricted portion.
Preferably, both sides between the protruding portions are inclined surfaces, and the width of the groove portion is enlarged.
Preferably, the constricted portion has an inclined surface whose diameter gradually decreases from the mouth side toward the bottom side, and an inclined surface whose diameter gradually decreases from the bottom side toward the mouth side, and between these inclined surfaces. Concave portions straddling both inclined surfaces across the valley bottom are intermittently formed in the circumferential direction.
Preferably, the lower part of the waist part of the waist part has a polygonal cross section.

1 is a perspective view of a container body 1 of a delamination container 10 according to a first embodiment of the first aspect of the present invention. 2A is a front view of the container body 1 of FIG. 1, FIG. 2B is a cross-sectional view taken along the line BB in FIG. 2A in a state where the valve member 4 is attached to the container body 1, and FIG. It is CC sectional drawing in FIG. 2B. 3A is a front view, FIG. 3B is a plan view, FIG. 3C is a bottom view, FIG. 3D is a left side view, FIG. 3E is a right side view, and FIG. 3F is a rear view. It is. It is sectional drawing corresponding to FIG. 2B which shows an example of the cap 30 with which the opening | mouth part 3 of the container main body 1 is mounted | worn. FIG. 5A is a perspective view of the valve member 4, and FIG. 5B is a cross-sectional view for explaining the function of the valve member 4. FIG. 6A shows that the inner bag 12 is placed on the inner side of the container body 1 on the connection surface 16c as the contents L decrease in the delamination container 10 in which the cap 30 is mounted after the container body 1 is filled with the contents L. FIG. 6B is a cross-sectional view corresponding to FIG. 2A, showing a state in which the bellows structure J is formed by being recessed toward FIG. 6B, and FIG. 6B is a cross-sectional view taken along CC in FIG. 6A. 7A to 7B are cross-sectional views corresponding to FIGS. 6A to 6B, showing a state when the outer shell 11 is compressed from the state of FIG. It is a perspective view of the container main body 1 of the lamination peeling container 10 of 2nd Embodiment of the 1st viewpoint of this invention. 9A is a front view of the container main body 1 of FIG. 8, FIG. 9B is a cross-sectional view taken along the line BB in FIG. 9A in a state where the valve member 4 is mounted on the container main body 1, and FIG. It is CC sectional drawing in FIG. 9B. 10A is a front view, FIG. 10B is a plan view, FIG. 10C is a bottom view, FIG. 10D is a left side view, FIG. 10E is a right side view, and FIG. 10F is a rear view. It is. 11A is a front view of the cylinder 25, FIG. 11B is a bottom view of the cylinder 25, FIG. 11C is a cross-sectional view along AA in FIG. 11B, FIG. 11D is a cross-sectional view along BB in FIG. 11F is a cross-sectional view showing a state in which the valve member 4 is attached to the outer shell 11, and FIG. 11G is a cross-sectional view showing a state in which the moving body 6 is in contact with the stopper portion 5h and closes the cavity portion 5g. FIG. 12A to 12B are sectional views showing states corresponding to FIGS. 6B and 7B in the delamination container 10 according to the second embodiment of the first aspect of the present invention.

It is a perspective view which shows the structure of the lamination peeling container of one Embodiment of the 2nd viewpoint of this invention. It is a schematic side view of the lamination peeling container shown in FIG. It is a schematic longitudinal cross-sectional view of the lamination peeling container shown in FIG. It is a schematic cross-sectional view of the lamination peeling container shown in FIG. It is a figure which shows a perimeter preliminary peeling process. It is a figure which shows another structural example of the press means in a perimeter preliminary peeling process. It is a figure which shows another example of a structure of the press means of a perimeter preliminary peeling process.

It is a schematic side view of the lamination peeling container of 1st Embodiment of a 3rd viewpoint. It is a schematic plan view of the lamination peeling container of 1st Embodiment of a 3rd viewpoint. FIG. 22 is a longitudinal sectional view taken along line AA in FIG. 21. FIG. 22 is a longitudinal sectional view taken along line BB in FIG. 21. FIG. 21 is a transverse sectional view taken along line CC of FIG. 20. It is a schematic side view of the lamination peeling container of 2nd Embodiment of a 3rd viewpoint. It is a schematic plan view of the lamination peeling container of 2nd Embodiment of a 3rd viewpoint. FIG. 27 is a longitudinal sectional view taken along line AA in FIG. 26. FIG. 27 is a longitudinal sectional view taken along line BB in FIG. 26. FIG. 26 is a transverse sectional view taken along line CC of FIG. 25. It is a schematic side view of the lamination peeling container of 3rd Embodiment of a 3rd viewpoint. It is a schematic plan view of the lamination peeling container of 3rd Embodiment of a 3rd viewpoint. FIG. 32 is a longitudinal sectional view taken along line AA in FIG. 31. FIG. 32 is a longitudinal sectional view taken along line BB in FIG. 31. FIG. 31 is a transverse sectional view taken along the line CC of FIG. 30. It is a schematic side view of the lamination peeling container of 4th Embodiment of a 3rd viewpoint.

Hereinafter, embodiments of the present invention will be described. Various characteristic items shown in the following embodiments can be combined with each other. The invention is established independently for each feature.

1. First aspect 1-1. First Embodiment of First Aspect As shown in FIGS. 1 and 2, a delamination container 10 of a first embodiment of the first aspect of the present invention includes a container body 1 and a valve member 4. The container body 1 includes a storage portion 2 that stores the contents, and a mouth portion 3 that has an opening that discharges the contents from the storage portion 2.

As shown in FIG. 2, the container main body 1 includes an outer shell 11 and an inner bag 12 in the housing portion 2 and the mouth portion 3. As the contents are reduced, the inner bag 12 is separated from the outer shell 11 and contracts. In addition, before accommodating the content in the accommodating part 2, the preliminary | backup peeling process which peels the inner bag 12 from the outer shell 11 may be performed. In this case, after the preliminary peeling, the inner bag 12 is brought into contact with the outer shell 11 by blowing air into the housing portion 2 or housing the contents. And the inner bag 12 leaves | separates from the outer shell 11 with the content reduction. On the other hand, when the preliminary peeling process is not performed, the inner bag 12 is peeled from the outer shell 11 and separated from the outer shell 11 when the contents are discharged.

The outer shell 11 is composed of, for example, low density polyethylene, linear low density polyethylene, high density polyethylene, polypropylene, ethylene-propylene copolymer, and a mixture thereof. The outer shell 11 may have a multilayer structure. For example, a configuration in which both sides of the repro layer are sandwiched between layers formed of a virgin material may be used. Here, the repro layer refers to a layer that is used by recycling burrs produced during the molding of the container. Moreover, the outer shell 11 is formed thicker than the inner bag 12 so that the restoring property becomes high. When the tensile modulus of the outer shell 11 is smaller than that of the inner bag 12 (preferably 1/2 or less, more preferably 1/4 or less), the restoring property of the outer shell 11 tends to deteriorate. In such a case, the advantage of applying the present invention is particularly great.

The inner bag 12 includes an EVOH layer provided on the outer surface side of the container, an inner surface layer provided on the inner surface side of the EVOH layer, and an adhesive layer provided between the EVOH layer and the inner surface layer. By providing the EVOH layer, the gas barrier property and the peelability from the outer shell 11 can be improved. The adhesive layer may be omitted.

The EVOH layer is a layer made of an ethylene-vinyl alcohol copolymer (EVOH) resin, and is obtained by hydrolysis of ethylene and vinyl acetate copolymer. The ethylene content of the EVOH resin is, for example, 25 to 50 mol%, and is preferably 32 mol% or less from the viewpoint of oxygen barrier properties. Although the minimum of ethylene content is not prescribed | regulated, since the softness | flexibility of an EVOH layer tends to fall, so that ethylene content is small, 25 mol% or more is preferable.

The inner surface layer is a layer that comes into contact with the contents of the delamination container 10, for example, low density polyethylene, linear low density polyethylene, high density polyethylene, polypropylene, ethylene-propylene copolymer, cycloolefin polymer, and mixtures thereof. It is preferably made of polyolefin such as low density polyethylene or linear low density polyethylene. Among these, since the cycloolefin polymer has relatively high rigidity, when the inner bag 12 includes a layer formed of a resin containing the cycloolefin polymer, the inner bag 12 is in a contracted state. Since the phenomenon that the recovery of the outer shell 11 is hindered by being caught in the outer shell 11 is likely to occur, the present invention is particularly effective in such a case.

The adhesive layer is a layer having a function of adhering the EVOH layer and the inner surface layer. For example, an acid-modified polyolefin having a carboxyl group introduced into the above-described polyolefin (eg, maleic anhydride-modified polyethylene), ethylene acetate It is a vinyl copolymer (EVA). An example of the adhesive layer is a mixture of low-density polyethylene or linear low-density polyethylene and acid-modified polyethylene.

The mouth portion 3 is provided with an engaging portion 3d that can engage with the cap 30 illustrated in FIG. The cap 30 may be a stopper type or may be a screw type.

In the present embodiment, the cap 30 is of a stopper type and includes a cap body 30a and a cap cover 30i as shown in FIG. The cap body 30a and the cap cover 30i are connected by a connecting portion 30j, and the cap cover 30i can be opened and closed. The cap body 30a includes an upper portion 30t, a discharge port 30b provided in the upper portion 30t, a cylindrical portion 30f extending in a cylindrical shape from the outer periphery of the upper portion 30t, and an engaging portion provided along the inner peripheral surface of the cylindrical portion 30f. 30c, an inner ring 30d extending in a cylindrical shape from the upper portion 30t inside the cylindrical portion 30f, a flow passage 30g provided inside the inner ring 30d and communicating with the discharge port 30b, and an inner ring provided in the flow passage 30g An annular valve seat 30r extending inward from 30d and a check valve 30e are provided. The check valve 30e has a valve body 30e1 that closes the discharge hole 30r1 formed in the center of the annular valve seat 30r, and a plurality of elastic members that extend from the inner ring 30d toward the center in the radial direction and elastically support the valve body 30e1. It has a piece 30e2. Then, the check valve 30e is opened by the valve body 30e1 being pushed up from the discharge hole 30r1 by the pressure increase in the accommodating portion 2.

The engaging portion 30 c is an annular protrusion that can be engaged with the engaging portion 3 d of the mouth portion 3. In a state where the cap 30 is attached to the mouth portion 3, the contents in the storage portion 2 are discharged from the discharge port 30b through the flow passage 30g. On the other hand, since the check valve 30e blocks the inflow of outside air from the discharge port 30b, the outside air does not enter the inner bag 12 of the container body 1, and the deterioration of the contents is suppressed. In addition, the structure of the cap 30 shown here is an example, Comprising: You may employ | adopt the cap 30 which has a check valve of another structure.

As shown in FIGS. 1 and 2, the accommodating portion 2 is provided with a valve member mounting recess 7a, and an outside air introduction hole 15 is provided in the recess 7a. The outside air introduction hole 15 is a through hole provided only in the outer shell 11, and communicates the intermediate space 21 between the outer shell 11 and the inner bag 12 and the outer space S of the container body 1. A valve member 4 that adjusts the flow of air between the intermediate space 21 and the external space S is attached to the outside air introduction hole 15. The concave portion 7a is provided in order to avoid interference between the valve member 4 and the shrink film when the accommodating portion 2 is covered with the shrink film. Further, an air circulation groove 7b extending from the recess 7a toward the mouth 3 is provided so that the recess 7a is not sealed with the shrink film.

As shown in FIG. 5A, the valve member 4 includes a shaft portion 8a disposed in the outside air introduction hole 15, and a lid portion 8c provided on the intermediate space 21 side of the shaft portion 8a and having a larger cross-sectional area than the shaft portion 8a. And a locking portion 8b that is provided on the outer space S side of the shaft portion 8a and prevents the valve member 4 from entering the intermediate space 21. The valve member 4 can be attached to the container main body 1 by inserting the lid portion 8c into the intermediate space 21 while the lid portion 8c expands the outside air introduction hole 15. Therefore, it is preferable that the tip of the lid portion 8c has a tapered shape. Since such a valve member 4 can be mounted simply by pushing the lid portion 8c into the intermediate space 21 from the outside of the container body 1, it is excellent in productivity.

The lid portion 8c is configured to substantially close the outside air introduction hole 15 when the outer shell 11 is compressed, and has a shape in which the cross-sectional area decreases as the shaft portion 8a is approached. Moreover, the latching | locking part 8b is comprised so that air can be introduce | transduced into the intermediate | middle space 21 when decompress | restoring after the outer shell 11 is compressed. When the outer shell 11 is compressed, the pressure in the intermediate space 21 becomes higher than the external pressure, and the air in the intermediate space 21 leaks out from the outside air introduction hole 15. The lid portion 8c moves toward the outside air introduction hole 15 due to the pressure difference and the air flow, and the lid portion 8c closes the outside air introduction hole 15 as shown in FIG. 5B. Since the cross-sectional area becomes smaller as the lid portion 8c approaches the shaft portion 8a, the lid portion 8c easily fits into the outside air introduction hole 15 and closes the outside air introduction hole 15.

When the outer shell 11 is further compressed in this state, the pressure in the intermediate space 21 increases, and as a result, the inner bag 12 is compressed and the contents in the inner bag 12 are discharged. Further, when the compressive force applied to the outer shell 11 is released, the outer shell 11 tries to recover by its own elasticity. At this time, the lid portion 8 c is separated from the outside air introduction hole 15, the outside air introduction hole 15 is released from being blocked, and outside air is introduced into the intermediate space 21. In addition, a flow passage 8d is provided in the locking portion 8b so that the locking portion 8b does not block the outside air introduction hole 15, and even when the locking portion 8b is in contact with the outer shell 11, the flow is prevented. Outside air can be introduced into the intermediate space 21 through the path 8 d and the outside air introduction hole 15.

As shown in FIGS. 1 and 2, a bottom seal protrusion 27 protruding from the bottom surface 29 is provided on the bottom surface 29 of the housing portion 2. As shown in FIG. 2B, by bending the bottom seal protrusion 27, the impact resistance of the container body 1 can be improved and the self-supporting property of the container body 1 can be improved.

Incidentally, as shown in FIGS. 1 and 2, the accommodating portion 2 is provided with a ridge portion 7e so as to surround the central axis CR passing through the center of the mouth portion 3 of the container body 1. A front side pressing surface 16f, a back side pressing surface 16b, and a pair of connecting surfaces 16c that connect these are provided below the ridge line portion 7e (the side farther from the mouth 3 than the ridge line portion 7e). Yes. On the upper side of the ridge line portion 7e (the side closer to the mouth portion 3 than the ridge line portion 7e), a reduced diameter surface 7f that is reduced in diameter toward the mouth portion 3 is provided. The pressing surfaces 16f and 16b are surfaces that are supposed to be pressed when the contents are discharged. As shown in FIG. 2B, at least one of the pressing surfaces 16f and 16b (both in the present embodiment) is parallel to the central axis CR of the container body 1 and passes through the pressing surfaces 16f and 16b (that is, in FIG. 2B). The cross section is curved toward the inside of the container body 1 (that is, it is constricted). Further, as shown in FIGS. 1 and 2A, the connecting surface 16c is parallel to the central axis CR of the container body 1 and crosses the connecting surface 16c (a cross-sectional view is not shown). Curved toward (ie, constricted). Further, the reduced diameter surface 7f is curved inward of the container main body 1 in a cross section that is parallel to the central axis CR of the container main body 1 and passes through the connecting surface 16c. Thus, since at least one of the upper side and the lower side (both in the present embodiment) of the ridge line portion 7e is curved toward the inside of the container body 1, the pressing surfaces 16f and 16b are contracted as shown in FIG. 7A. It is easy to bend with respect to the radial surface 7f. For this reason, when the pressing surfaces 16f and 16b are pressed and the outer shell 11 is compressed, the ridge line portion 7e is hardly deformed, and the restoring property of the outer shell 11 is enhanced. In addition, since the outside air introduction hole 15 is provided in the reduced diameter surface 7f and the reduced diameter surface 7f is not easily deformed when the outer shell 11 is compressed, introduction of outside air may be hindered by the deformation of the outer shell 11. The outside air is smoothly introduced into the intermediate space 21. In addition, at least one of the pressing surfaces 16f and 16b and the connecting surface 16c (all in the present embodiment) has a constricted shape, so that the resilience of the outer shell 11 is enhanced.

2C, the radius of curvature RC of the connecting surface 16c is larger than the radius RI of the circle IC inscribed in the pressing surfaces 16f and 16b in a cross section perpendicular to the central axis CR of the container body 1. The circle IC is the largest circle that can be formed in the container body 1 in the cross section. In this embodiment, since the connection surface 16c is a flat surface, the radius of curvature RC is infinite. In the second embodiment, the radius of curvature RC of the connecting surface 16c is 2.1 times the radius RI. RC / RI is preferably 1.2 times or more, more preferably 1.5 times or more, and further preferably 2 times or more. The upper limit is not particularly defined and may be infinite.

Furthermore, as shown in FIG. 2C, the radii of curvature RF and RB of at least one of the pressing surfaces 16f and 16b (both in the present embodiment) are larger than the radius RI. In the present embodiment, the curvature radii RF and RB are both about 1.8 times the radius RI. RF / RI and RB / RI are preferably 1.2 times or more, more preferably 1.5 times or more, and still more preferably 1.7 times or more. The upper limit is not particularly defined and may be infinite.

Furthermore, as shown in FIG. 2C, the radii of curvature RFC and RBC at the boundaries 16fc and 16bc of at least one of the pressing surfaces 16f and 16b (both in the present embodiment) and the connecting surface 16c are smaller than the radius RI. . In this embodiment, the curvature radii RFC and RBC are both about 0.86 times the radius RI. RFC / RI and RBC / RI are preferably 0.95 times or less, and more preferably 0.9 times or less. The lower limit is not particularly defined, and is, for example, 0.05, 0.1, 0.2, or 0.5 times. In this case, the rigidity of the outer shell 11 at the boundaries 16fc and 16bc is increased, and the recoverability of the outer shell 11 is improved.

Here, the effect | action which the restoring property of the outer shell 11 improves by this invention is demonstrated.
As shown in FIG. 6, when the outer shell 11 of the delamination container 10 filled with the contents L in the inner bag 12 of the container body 1 is compressed, the contents L are discharged through the discharge port 30 b of the cap 30. When the content L in the bag 12 decreases, the inner bag 12 contracts. A cross section for compressing the outer shell by pressing a specific pair of pressing surfaces (in this embodiment, the pressing surfaces 16f and 16b, and in Patent Document 1, a pair of rigid wall portions) as in this embodiment and Patent Document 1. In the non-circular delamination container, as shown in FIG. 2 of Patent Document 1, the inner bag shrinks so that the inner bag is sandwiched between a pair of pressing surfaces and becomes flat. Further, as in Patent Document 1, when the radius of curvature of the connecting surface connecting the pair of pressing surfaces is smaller than the radius of the circle inscribed in the pair of pressing surfaces, the inner bag is located inside the container body on the connecting surface. Since the inner bag does not dent, the shape as shown in FIG. Since the inner bag of such a shape has a weak restoring force, the function of the inner bag assisting the restoration of the outer shell is hardly exhibited. Further, the recovery of the outer shell may be hindered by the inner bag being stuck. On the other hand, when the curvature radius RC of the connecting surface 16c is larger than the radius RI as in the present embodiment, the degree to which the connecting surface 16c bulges outward in the width direction of the container body 1 is relatively small. When the inner bag 12 is contracted, the inner bag 12 tends to be recessed toward the inside of the container body 1 at the connecting surface 16c. When the inner bag 12 is recessed toward the inside of the container body 1, a bellows structure J shown in FIG. 6B is formed in the inner bag 12.

In this state, as shown in FIG. 7, when the outer shell 11 is compressed by pressing the pressing surfaces 16f and 16b, the inner bag 12 is compressed and the contents L are further discharged. At this time, when the bellows structure J is contracted, a restoring force extending in the front-rear direction is generated in the bellows structure J, and the restoring force of the outer shell 11 is improved by applying the restoring force to the outer shell 11. Further, when the bellows structure J is formed in the inner bag 12, the inner bag 12 does not get stuck in the outer shell 11, so that the restoring property of the outer shell 11 is also improved from this viewpoint.

1-2. Second Embodiment of First Aspect The second embodiment of the first aspect of the present invention will be described with reference to FIGS. This embodiment is similar to the first embodiment, and is mainly different in that the configuration of the valve member 4 and the shape of the container body 1 are different. Hereinafter, the difference will be mainly described.

First, the valve member 4 used in this embodiment will be described with reference to FIG. The valve member 4 includes a cylindrical body 25 having a hollow portion 5g provided so as to allow the external space S and the intermediate space 21 to communicate with each other, and a movable body 6 movably accommodated in the hollow portion 5g. The cylindrical body 25 and the movable body 6 are formed by injection molding or the like, and the movable body 6 is disposed in the cavity portion 5g by pushing the movable body 6 into the cavity portion 5g so as to get over a stopper portion 5h described later. be able to. In the present embodiment, the hollow portion 5g has a substantially cylindrical shape, and the moving body 6 has a substantially spherical shape, but may have another shape as long as the same function as that of the present embodiment can be realized. . The diameter of the cavity 5g in the cross section (cross section in FIG. 11D) is slightly larger than the diameter in the corresponding cross section of the mobile body 6, and the mobile body 6 freely moves in the direction of arrow B in FIG. 11C. It has a possible shape. The ratio value defined by the diameter of the cross section of the cavity 5g / the diameter of the corresponding cross section of the moving body 6 is preferably 1.01 to 1.2, and more preferably 1.05 to 1.15. If this value is too small, smooth movement of the moving body 6 is hindered. If this value is too large, the gap between the surface 5j surrounding the cavity 5g and the moving body 6 becomes too large, and the container body 1 is compressed. This is because the force applied to the moving body 6 tends to be insufficient.

The cylindrical body 25 includes a shaft portion 5a disposed in the outside air introduction hole 15, a locking portion 5b provided on the outer space S side of the shaft portion 5a and preventing the cylindrical body 25 from entering the intermediate space 21, and a shaft It has an enlarged diameter part 5k which is provided on the intermediate space 21 side of the part 5a and prevents the cylindrical body 25 from being pulled out from the outside of the container body 1. The shaft portion 5a is tapered toward the intermediate space 21 side. The cylindrical body 25 is attached to the container main body 1 when the outer peripheral surface of the shaft portion 5 a is in close contact with the edge of the outside air introduction hole 15. With such a configuration, the gap between the edge of the outside air introduction hole 15 and the cylindrical body 25 can be reduced. As a result, when the container main body 1 is compressed, the air in the intermediate space 21 becomes free from the outside air introduction hole 15. Outflow from the gap between the edge and the cylinder 25 can be suppressed. In addition, since the cylindrical body 25 is attached to the container main body 1 when the outer peripheral surface of the shaft portion 5a is in close contact with the edge of the outside air introduction hole 15, the expanded diameter portion 5k is not necessarily essential. Moreover, the axial part 5a may become a taper shape toward the container outer side, and the outer peripheral shape of the axial part 5a may be a column shape which does not change along an axial direction.

On the surface 5j surrounding the hollow portion 5g, there is provided a stopper portion 5h for locking the moving body 6 when the moving body 6 moves from the intermediate space 21 side toward the external space S side. The stopper portion 5h is configured by an annular protrusion, and when the moving body 6 comes into contact with the stopper portion 5h, the air flow through the hollow portion 5g is blocked.

Further, the tip of the cylindrical body 25 is a flat surface 5l, and the flat surface 5l is provided with an opening 5e communicating with the cavity 5g. The opening 5e has a substantially circular central opening 5e1 provided at the center of the flat surface 5l, and a plurality of slits 5e2 radiating from the central opening 5e1. According to such a configuration, the flow of air is not hindered even when the moving body 6 is in contact with the bottom of the cavity 5g.

As shown in FIG. 11F, when the valve member 4 is inserted into the outside air introduction hole 15 from the expanded diameter portion 5k side and pushed into a position where the locking portion 5b comes into contact with the outer surface of the outer shell 11, the valve member 4 The outer peripheral surface is held by the outer shell 11 in a state of being in close contact with the edge of the outside air introduction hole 15. When the outer shell 11 is compressed in a state where air is contained in the intermediate space 21, the air in the intermediate space 21 enters the hollow portion 5g through the opening 5e, and pushes up the moving body 6 to contact the stopper portion 5h. When the moving body 6 comes into contact with the stopper portion 5h, the air flow through the hollow portion 5g is blocked.

When the outer shell 11 is further compressed in this state, the pressure in the intermediate space 21 increases, and as a result, the inner bag 12 is compressed and the contents in the inner bag 12 are discharged. Further, when the compressive force applied to the outer shell 11 is released, the outer shell 11 tries to recover by its own elasticity. As the inner space 21 is decompressed as the outer shell 11 is restored, a force FI in the container inner direction is applied to the moving body 6 as shown in FIG. 11G. As a result, the moving body 6 moves toward the bottom of the hollow portion 5g and enters the state shown in FIG. 11F, and outside air is introduced into the intermediate space 21 through the gap between the moving body 6 and the surface 5j and the opening 5e. The

Next, the shape of the container body 1 will be described with reference to FIGS. As in the first embodiment, the container 2 of the container body 1 is provided with a ridge 7e, pressing surfaces 16f and 16b, a connecting surface 16c, and a reduced diameter surface 7f. At least one of the pressing surfaces 16f and 16b (both in the present embodiment) includes a base surface 16fb and 16bb and a panel surface 16fp and 16bp formed by recessing the base surfaces 16fb and 16bb. In the cross section of FIG. 9B, the reduced diameter surface 7 f and the base surfaces 16 fb and 16 bb are linear, and the panel surfaces 16 fp and 16 bp are curved toward the inside of the container body 1. The connection surface 16c is curved toward the inside of the container body 1 as in the first embodiment. The outside air introduction hole 15 is provided in the base surface 16fb, and since the base surface 16fb is not easily deformed when the outer shell 11 is compressed, the introduction of the outside air is not hindered by the deformation of the outer shell 11, and the outside air Is smoothly introduced into the intermediate space 21. Further, at least one of the panel surfaces 16fp, 16bp and the connecting surface 16c (all in this embodiment) has a constricted shape, so that the resilience of the outer shell 11 is enhanced.

As shown in FIG. 9C, in this embodiment, the curvature radius RC of the connecting surface 16c and the curvature radii RF and RB of the pressing surfaces 16f and 16b are both of the radius RI of the circle IC inscribed in the pressing surfaces 16f and 16b. 2.1 times. The curvature radii RC, RF and RB are preferably larger than the radius RI of the circle IC. RC / RI is preferably 1.2 times or more, more preferably 1.5 times or more, and further preferably 2 times or more. The upper limit of RC / RI is not particularly defined and is, for example, 100, 50, or 10 times, but may be infinite. The curvature radii RC, RF, and RB may be the same or different from each other.

Further, as shown in FIG. 9C, the curvature radii RFC and RBC at the boundaries 16fc and 16bc of at least one of the pressing surfaces 16f and 16b (both in the present embodiment) and the connecting surface 16c are smaller than the radius RI. . In this embodiment, the curvature radii RFC and RBC are both about 0.2 times the radius RI. RFC / RI and RBC / RI are preferably 0.8 times or less, and more preferably 0.5 times or less. A minimum in particular is not prescribed | regulated, For example, it is 0.05 or 0.1 time. In this case, the rigidity at the boundaries 16fc and 16bc is increased, and the recoverability of the outer shell 11 is improved.

Further, the shape of the cross section (not shown) passing through the base surfaces 16fb and 16bb is a substantially rectangular shape that is long in the front-rear direction, and the shape of the cross section passing through the panel surfaces 16fp and 16bp (FIG. 9C) is a substantially square shape. It has become. With such a configuration, the stroke when the container body 1 is compressed in the front-rear direction is increased. In addition, since the inner volume can be increased even at the same overall height as compared with the conventional cylindrical container, the amount of air in the intermediate space 21 at the time when the content L of the inner bag 12 is reduced is the conventional cylinder. More than a shaped container.
For this reason, since the contents L can be discharged even if the inner bag 12 is not completely crushed, the dischargeability is improved.

Also in this embodiment, the resilience of the outer shell 11 is improved by the same action as in the first embodiment. FIG. 12A is a view corresponding to FIG. 6B, and when the contents L of the inner bag 12 are discharged and the inner bag 12 contracts, the inner bag 12 faces toward the inside of the container body 1 at the connection surface 16 c. The dent and the bellows structure J are shown in the inner bag 12.

When the outer shell 11 is compressed by pressing the panel surfaces 16fp and 16bp from the state of FIG. 12A, the inner bag 12 is compressed and the contents L are further discharged. At this time, as shown in FIG. 12B, the bellows structure J is contracted to generate a restoring force in the direction of spreading back and forth, and the restoring force is applied to the outer shell 11 to restore the outer shell 11. Improves.

1-3. Example of First Viewpoint A delamination container (Example 1) having a configuration according to the first embodiment of the first aspect, a cylindrical delamination container (Comparative Example 1), and a delamination container having a shape in which a constriction is added to a cylinder. (Comparative Example 2) was prepared, and an aspect in which the inner bag 12 contracted when the outer shell 11 was crushed was observed. In Example 1, the bellows structure J was formed in the inner bag 12 in the site | part corresponding to the connection surface 16c, and the recoverability of the outer shell 11 was favorable. In Comparative Examples 1 and 2, the bellows structure J was not formed on the inner bag 12, and the restoring property of the outer shell 11 was hindered by the inner bag 12 being pulled.
In addition, the layer structure of an Example and a comparative example was as follows in order from the container outer side. The thickness is the thickness in the cross section of FIG. 2C.
・ LDPE (tensile modulus 250MPa, thickness 0.5mm)
EVOH (tensile elastic modulus 1900 MPa, thickness 0.03 mm)
-Adhesive layer (tensile modulus 20 MPa, thickness 0.03 mm)
-Mixed resin layer of COP and SEBS (tensile elastic modulus 1400 MPa, thickness 0.1 mm)

2. One Embodiment of Second View As shown in FIGS. 13 and 14, a delamination container 10 of this embodiment is a so-called delamination container, and mainly includes a container body 1. And the container main body 1 is equipped with the accommodating part 2 which accommodates the contents, and the opening part 3 which discharges the contents from the accommodating part 2. FIG. Further, a cap 30 that is opened and closed via a hinge is attached to the mouth portion 3.

In the laminated peeling container 10 of the present embodiment, the inner bag 12 is smoothly peeled by devising its shape. Hereinafter, the device of the shape in the lamination peeling container 10 of this embodiment is explained in full detail.

The delamination container 10 of the present embodiment is mainly composed of a container main body 1, and the container main body 1 is composed of a storage part 2 that stores the contents and a mouth part 3 that discharges the contents from the storage part 2. Although configured, the accommodating portion 2 is further subdivided into a trunk portion 33 having a substantially constant diameter and a shoulder portion 32 that gradually decreases in diameter toward the mouth portion 3.

In the delamination container 10 of the present embodiment, a ridge line portion 41 is formed on the peripheral surface of the body portion 33. Here, the plurality of ridge line portions 41 are formed at substantially equal intervals over the entire circumference of the peripheral surface of the body portion 33, and the plurality of ridge line portions 41 are formed substantially parallel to each other, and each ridge line portion is further formed. 41 is formed to be inclined obliquely with respect to the height direction of the delamination container 10.

The ridge line portion 41 is formed by forming a region 42 between the ridge line portion 41 and the ridge line portion 41 as a flat surface or a concave portion (for example, a curved concave portion). It is formed as a slightly protruding linear portion. Therefore, when using the delamination container 10, if the body portion 33 is gripped and pressed by hand, a force is applied to the ridge line portion 41.

Further, as described above, the ridge line portion 41 is formed obliquely with respect to the height direction of the delamination container 10, and the inclination angle is arbitrary. For example, as shown in FIG. The angle α with respect to the height direction of the 41 exfoliation peeling container 10 (perpendicular to the mounting surface of the exfoliation peeling container 10) is preferably 40 ° ≦ α ≦ 80 °. If the inclination angle α is out of the above range, the peeling promoting effect may be reduced.

The ridge line portion 41 may be formed to be inclined obliquely in a straight line or may be formed in a curved shape (so-called spiral shape). In the latter case, the inclination of the tangent at the central portion may be within the angle range.

The ridge line portion 41 is preferably formed over the entire height direction of the body portion 33, but is not limited thereto, and may be formed in a part of the body portion 33 in the height direction. However, the ridge line portion 41 is preferably not formed on the shoulder portion 32. This is because the peeled state of the inner bag 12 in the vicinity of the outside air introduction hole 15 formed in the shoulder portion 32 may be adversely affected.

Similarly, the ridge line portion 41 is preferably formed over the entire circumferential surface (the entire circumference) of the trunk portion 33 in order to promote the peeling of the inner bag 12, but is not limited thereto. The peripheral surface of the portion 33 may be intermittently formed in the circumferential direction. Further, the interval between the ridge line portions 41 (that is, the width of the band-like region 42) is arbitrary, but is preferably several mm to several cm. Even if the interval between the ridge portions 41 is too wide or conversely too narrow, it may be difficult to promote the peeling of the inner bag 12.

In the delamination container 10 in which the ridge line portion 41 is formed obliquely on the body portion 33 as described above, when the body portion 33 is gripped and pressed by hand, a force is applied to the ridge line portion 41 so as to protrude. The shape of the ridge line portion 41 is inverted to form a valley portion. The inner bag 12 peels from the outer shell 11 due to the rapid deformation during the reversal. That is, the peeling of the inner bag 12 proceeds with the inversion of the ridge 41 as a starting point.

Further, since the ridge line portion 41 is formed obliquely, not only the pressed ridge line portion 41 but also the neighboring ridge line portion 41 is inverted. As a result, a plurality of separation points of the inner bag 12 are formed around the pressing portion, and the separation of the inner bag 12 proceeds more smoothly.

In the above-described laminated peeling container 10, it is also preferable to perform a preliminary peeling process in which the inner bag 12 is peeled in advance from the outer shell 11.

For example, as shown in FIG. 17, the preliminary peeling step is performed by rotating the container body 1 while pressing and compressing the housing part 2 of the container body 1 from the outside with a pressing means, so that the inner bag is formed on the entire circumference of the housing part 2. 12 is preliminarily exfoliated from the outer shell 11 (preliminary exfoliation step on the entire circumference). The pressing means includes first and second pressing bodies 48 and 49 each having roller portions 48b and 49b. The accommodating portion 2 is sandwiched and pressed between the roller portions 48b and 49b. In this state, as shown in FIG. 17, when the container body 1 is rotated about the central axis 52 in the direction of arrow A, the roller portions 48b and 49b are accommodated while rotating about the central axes 48a and 49a in the direction of arrow B. By pressing the portion 2, the inner bag 12 is preliminarily peeled from the outer shell 11 over the entire circumference of the housing portion 2. You may rotate the container main body 1 and the roller parts 48b and 49b in the reverse direction to the said embodiment. Further, when the container body 1 is rotated, at least one of the roller portions 48b and 49b may be prevented from rotating.

The pressing of the container body 1 is preferably performed so that the accommodating portion 2 is compressed by 5 to 30% (preferably 10 to 20%) of its diameter. If the degree of compression is too small, the entire circumference pre-peeling is unlikely to occur, and if the degree of compression is too large, the inner bag 12 may be recessed toward the center of the container body 1 and it may be difficult to inject the contents in a subsequent process. Because there is. Moreover, when the outer shell 11 is crushed too much, there is a problem that the outer shell 11 is not restored after being pressed and becomes a defective container.

In the configuration example of FIG. 17, the container body 1 is rotated by rotationally driving at least one of the roller portions 48 b and 49 b in a state where the container body 1 is rotatably supported around the central axis 52. Also good. Further, the pressing means may be moved along the outer periphery of the container body 1. As a specific configuration example, as shown in FIG. 18, the connecting member 53 is rotated around the central axis 52 of the container body 1 in a state where the first and second pressing bodies 48 and 49 are connected by the connecting member 53. A configuration is mentioned. In this configuration example, when the connecting member 53 is rotated in the arrow B direction, the first and second pressing bodies 48 and 49 rotate in the arrow B direction around the central axes 48a and 49a, and the central shaft 52 is rotated. It moves along the outer periphery of the container body 1 to the center. In this configuration example, the container body 1 may or may not rotate.

FIG. 19 shows still another configuration example of the pressing means. In this configuration example, the pressing means includes first and second pressing bodies 48 and 49 each having belt portions 48c and 49c. In this configuration example, the all-around preliminary peeling step moves the belt portion 48c relative to the belt portion 49c while compressing the holding portion 2 by pressing the receiving portion 2 with the receiving portion 2 interposed between the belt portion 48c and the belt portion 49c. By carrying out, it carries out by conveying in one direction (arrow C direction), rotating the container main body 1. FIG. The belt portion 48c is supported by a pair of support columns 48e, and the belt portion 49c is supported by a pair of support columns 49e. The belt portion 48c can be moved in the direction of the arrow C by rotationally driving at least one of the pair of support columns 48e or by separately providing a drive shaft that meshes with the belt portion 48c and rotationally driving the drive shaft. . The belt portion 49c may be moved in the direction of arrow C at a lower speed than the belt portion 48c, may not be moved, or may be moved in the direction opposite to the arrow C at a lower speed than the belt portion 48c. In any case, the container body 1 is conveyed in the direction of arrow C while rotating with the relative movement between the belt portions 48c and 49c. This configuration example is suitable for incorporation into a production line because a large number of container bodies 1 can be processed continuously.

Further, the support plate 50 may be disposed between the pair of support columns 48e, and the support plate 51 may be disposed between the pair of support columns 49e. The support plates 50 and 51 are fixed to a base (not shown) and are configured not to be easily bent. Although the accommodating portion 2 may not be sufficiently pressed due to the bending of the belt portions 48c and 49c at a portion away from the support pillars 48e and 49e, the belt portion can be obtained by arranging the support plates 50 and 51 at the above positions. The bending of 48c and 49c is suppressed, and the accommodating part 2 can be reliably pressed and compressed. The belt portions 48c and 49c are preferably provided with irregularities on the contact surface with the housing portion 2. In this case, it is because the grip force between the accommodating part 2 and the belt parts 48c and 49c increases, and the container main body 1 is conveyed while rotating more reliably.

The whole circumference preliminary peeling process can be performed at an arbitrary timing. Although it is not essential to perform the air blowing preliminary peeling step before the entire circumferential preliminary peeling step, if a part of the inner bag 12 is preliminarily peeled from the outer shell 11 in advance, the preliminary peeling region Therefore, it is preferable to perform the air blowing preliminary peeling step before the whole circumference preliminary peeling step. In this case, the all-around preliminary peeling step can be performed at an arbitrary timing after the air blowing preliminary peeling step.

3. Third viewpoint 3-1. First Embodiment of Third View The delamination container of the present embodiment is a so-called delamination container, and mainly includes a container body 1 as shown in FIGS. And the container main body 1 is equipped with the accommodating part 2 which accommodates the content, and the opening part 3 which discharges the content accommodated in the accommodating part 2. FIG. For example, a cap that is opened and closed via a hinge is attached to the mouth 3.

In the delamination container of the present embodiment, by devising its shape, it is easy to squeeze, it is difficult to drop, and the inner bag 12 is smoothly peeled off. Hereinafter, the device of the shape in the lamination peeling container of this embodiment is explained in full detail.

The delamination container of the present embodiment is mainly composed of a container main body 1, and the container main body 1 includes a storage part 2 that stores the contents and a mouth part 3 that discharges the contents stored in the storage part 2. It consists of and. Although the accommodating part 2 is formed in the cylindrical shape which has a predetermined | prescribed outer diameter dimension, in the case of this embodiment, it has the constriction part 2A in the approximate center part of the height direction.

That is, as shown in FIG. 20, the accommodating portion 2 includes, in order from the top in the height direction, an upper portion 2 </ b> B, a constricted portion 2 </ b> A, and a lower portion having a substantially constant outer diameter. 2C. The constricted portion 2A has an inclined surface 21A that gradually decreases in diameter from the mouth 3 side toward the bottom side (the diameter gradually decreases from the mouth 3 side toward the bottom side) and from the bottom side toward the mouth 3 side. The inclined surface 21B gradually decreases in diameter (the diameter gradually decreases from the bottom side toward the mouth 3 side), and the position where these inclined surfaces 21A and 21B are in contact has the smallest diameter in the accommodating portion 2. It is a valley bottom V. The position of the constricted portion 2A in the height direction is substantially the central portion as described above. Specifically, the position of the valley bottom V is 30% to 70% of the total height of the container. Moreover, although it is the depth of the constricted part 2A, in the cross section of the container, the diameter of the narrowed part (valley bottom V) of the constricted part 2A is 0 with respect to the maximum diameter of the accommodating part 2. It is desirable to be 6 times to 0.85 times.

By providing the constricted portion 2A in the central portion of the accommodating portion 2, the accommodating portion 2 can be easily gripped. In addition, by providing the constricted portion 2A, it is easy to grip and can prevent inadvertent dropping. However, in the delamination container of the present embodiment, a rib that is a protruding portion is further provided to ensure the fall preventing effect. In addition, it is easy to squeeze and facilitate smooth peeling of the inner bag 12.

Explaining this rib, in the delamination container of this embodiment, a rib extending in the vertical direction from the lower end position of the upper portion 2B (the upper end position of the inclined surface 21A) to the midway position of the inclined surface 21A. 22 is formed so as to protrude from the inclined surface 21A. A plurality of ribs 22 are formed at equiangular intervals in the circumferential direction of the accommodating portion 2, and in the present embodiment, eight ribs 22 are formed on the entire circumference of the accommodating portion 2. Further, a groove portion 23 is formed as a slit between each rib 22 and the rib 22. Therefore, in the cross section shown in FIG. 24, the rib 22 (protruding portion) is a convex portion, and the groove portion 23 is The uneven part used as a recessed part is formed as the uneven part in the circumferential direction. The bottom surface of the groove portion 23 is a surface corresponding to the original inclined surface of the inclined surface 21A.

Each rib 22 is formed so as to gradually increase downward from the upper end position of the inclined surface 21A, and the highest portion is approximately the same height as the maximum diameter portion of the upper portion 2B and the lower portion 2C. . Each rib 22 is formed to have the same height as the inclined surface 21A for a short distance after reaching the maximum height. Therefore, the inclined surface 22A below the rib 22 is inclined upward. The inclined surface is steeper than the surface 22B and the bottom surface 23A of the groove 23. Both sides of each rib 22 are inclined portions 24, and the groove width of the groove portion 23 is partially enlarged (the lateral width of the rib 22 is partially reduced).

By forming the rib 22 as described above, it is possible to prevent the fall. When gripping the constricted portion 2A, a finger is caught on the inclined surface 22A below the rib 22, and it is difficult to fall. Further, since the constricted portion 2A connected to the groove portion 23 has a gentle shape, an effect that it is easy to squeeze can be obtained.

Also, the formation of the ribs 22 and the groove portions 23 is effective in promoting the peeling of the inner bag 12. For example, in the preliminary stripping process, it is difficult to perform preliminary stripping on the constricted portion 2A. However, since the ribs 22 and the groove portions 23 are formed, the stripping progresses with the corners of the ribs 22 and the groove portions 23 as a starting point. Also in 2A, preliminary peeling progresses following the upper part 2B and the lower part 2C of the storage part 2.

On the other hand, when the constricted portion 2A is squeezed, the inner bag 12 tends to be peeled off only at the constricted portion 2A. As a starting point, peeling spreads to the upper part 2B and the lower part 2C of the housing part 2. At this time, if the groove width of the groove portion 23 is partially enlarged (reduced), an effect of further widening the peeling range can be obtained.

3-2. Second Embodiment of Third View The basic configuration of the delamination container of this embodiment is the same as that of the delamination container of the first embodiment, and a description thereof is omitted. In the case of the delamination container of this embodiment, as shown in FIGS. 25 to 29, the rib 22 is formed on both the upper and lower inclined surfaces 21A and 21B.

The shape of each rib 22 and groove 23 is the same as that of the first embodiment on the upper and lower inclined surfaces 21A and 21B, and is formed symmetrically on the upper and lower inclined surfaces 21A and 21B. Therefore, even when the container body 1 is tilted, a finger is caught on the inclined surface 22A above the rib 22 formed on the inclined surface 21B, and it becomes more difficult to fall. Moreover, the progress of the peeling of the inner bag 12 also proceeds in the vertical direction and is performed more smoothly.

3-3. Third Embodiment of Third View The basic configuration of the delamination container of the present embodiment is also the same as the delamination container of the first embodiment or the second embodiment, and the description thereof is omitted. In the case of the delamination container of the present embodiment, as shown in FIGS. 30 to 34, the recesses 31 straddling both inclined surfaces 21A and 21B across the valley bottom V between the inclined surfaces 21A and 21B are intermittent in the circumferential direction. It is characteristic that it is formed.

Each recess 31 has an oval shape with a large diameter in the vertical direction, and its bottom surface is a curved surface. Moreover, the recessed part 31 is intermittently formed over the perimeter of the valley bottom part V, and between each recessed part 31 is a protrusion part. Therefore, the concave and convex portions are formed in the circumferential direction.

In the delamination container of this embodiment, when the constricted portion 2A is gripped, a finger is caught on the concave portion 31, and it is easy to grip and squeeze. Moreover, it is hard to fall by the finger | toe catching on the recessed part 31. FIG. Further, by forming the concave portion 31, irregularities are formed in the constricted portion 2 </ b> A, and the peeling of the inner bag 12 proceeds from this point, and the peeling of the inner bag 12 during the preliminary peeling process or squeeze is smoothly performed. Will be done.

3-4. Fourth Embodiment of Third View As in the container of the first embodiment, the delamination container of this embodiment has ribs 22 and grooves 23 formed above the constricted portion 2A. As shown in the figure, the lower surface 2C of the housing part 2 is formed with arrayed surface processing parts 40 in the circumferential direction, and the cross section of the lower part 2C of the housing part 2 has a polygonal shape. Different from the container of the embodiment. By making the lower part 2C of the accommodating part 2 into a polygonal shape, the peeling of the inner bag 12 in this part can be promoted, and in combination with the peeling promotion by the formation of the rib 22 and the groove part 23, the inner bag 12 Peeling can be performed more smoothly.

In the case of the present embodiment, the rib 22 and the groove 23 are formed from the inclined surface 21A of the constriction 2A to the upper part 2B of the housing part 2, and the width of the rib 22 and the groove 23 is increased (or It has not been reduced. Therefore, the rib 22 and the groove part 23 are formed in a straight shape.

1: container body, 2: housing part, 2A: part, 2B: upper part, 2C: lower part, 3: mouth part, 3d: engagement part, 4: valve member, 5a: shaft part, 5b: locking part 5e: opening, 5e1: central opening, 5e2: slit, 5g: cavity, 5h: stopper, 5j: surface, 5k: expanded portion, 5l: flat surface, 6: moving body, 7a: valve Member mounting recess, 7b: air flow groove, 7e: ridge line portion, 7f: reduced diameter surface, 8a: shaft portion, 8b: locking portion, 8c: lid portion, 8d: flow passage, 10: delamination container, 11: Outer shell, 12: inner bag, 15: outside air introduction hole, 16b: back side pressing surface, 16bb: base surface, 16bc: boundary, 16bp: panel surface, 16c: connecting surface, 16f: front side pressing surface, 16fb: base Surface, 16fc: boundary, 16fp: panel surface, 21: intermediate space, 21A: inclined surface, 21B: inclined surface, 2: rib, 22A: inclined surface, 22B: inclined surface, 23: groove portion, 23A: bottom surface, 24: inclined surface portion, 25: cylindrical body, 27: bottom seal protrusion, 29: bottom surface, 30: cap, 30a: cap Main body, 30b: discharge port, 30c: engagement portion, 30d: inner ring, 30e: check valve, 30e1: valve body, 30e2: elastic piece, 30f: cylindrical portion, 30g: flow passage, 30i: cap cover, 30j : Connection part, 30r: annular valve seat, 30r1: discharge hole, 30t: upper part, 31: recessed part, 32: shoulder part, 33: trunk part, 40: surface processing part, 41: ridge line part, 42: area, 48: First pressing body, 48a: center axis, 48b: roller section, 48c: belt section, 48e: support pillar, 49: second pressing body, 49a: center axis, 49b: roller section, 49c: belt section, 49e: support Column, 50: support plate, 51 Support plate, 52: central axis, 53: connecting member, A: arrow, B: arrow, C: arrow, CR: central axis, FI: force, IC: circle, J: bellows structure, L: contents, RA: Radius of curvature, RB: radius of curvature, RBC: radius of curvature, RC: radius of curvature, RF: radius of curvature, RFC: radius of curvature, RI: radius, S: external space, V: valley bottom, α: angle of inclination,

Claims (26)

1. A delamination container having an outer shell and an inner bag and including a container body that shrinks as the contents are reduced, and includes at least one of configurations (1) to (3).
   (1) The said container main body is provided with the accommodating part which accommodates the said content, and the opening part which discharges the said content from the said accommodating part, and the said accommodating part mutually opposes when compressing the said container main body A front-side pressing surface and a back-side pressing surface, and a pair of connecting surfaces that connect the front-side pressing surface and the back-side pressing surface, and the connecting surface includes the inner bag as the contents decrease. It is comprised so that it may deform | transform so that it may dent toward the inner side of the said container main body.
   (2) A plurality of ridge line portions are formed substantially parallel to each other on the circumferential surface of the body portion, and each ridge line portion is formed obliquely with respect to the height direction of the container.
   (3) It has a constricted part at the approximate center of the trunk part, and an uneven part is formed in the constricted part in the circumferential direction.
2. The delamination container according to claim 1, comprising the configuration (1).
3. The delamination according to claim 2, wherein a radius of curvature RC of the connecting surface is larger than a radius RI of a circle inscribed in the front side pressing surface and the back side pressing surface in a cross section perpendicular to the central axis of the container body. container.
4. The delamination container according to claim 3, wherein RC / RI ≧ 1.2.
5. The connection surface according to any one of claims 2 to 4, wherein the connection surface is parallel to a central axis of the container body and is curved toward the inside of the container body in a cross section passing through the connection surface. The laminated peeling container as described.
6. The radius of curvature RA of at least one of the front side pressing surface and the rear side pressing surface is an inscribed circle inscribed in the front side pressing surface and the back side pressing surface in a cross section perpendicular to the central axis of the container body. 6. The delamination container according to claim 2, wherein the delamination container is larger than the radius RI.
7. 7. The delamination container according to claim 6, wherein RA / RI ≧ 1.2.
8. At least one of the front-side pressing surface and the back-side pressing surface is parallel to the central axis of the container body and is inside the container body in a cross section passing through the front-side pressing surface and the back-side pressing surface. The delamination container according to any one of claims 2 to 7, wherein the delamination container is curved toward the surface.
9. The accommodating portion includes a ridge line portion provided so as to surround the central axis of the container body,
   The delamination container according to any one of claims 2 to 8, wherein the front-side pressing surface and the back-side pressing surface are provided at positions farther from the mouth than the ridge line portion.
10. The accommodating portion includes a reduced diameter surface that reduces the diameter toward the mouth portion at a position closer to the mouth portion than the ridge line portion,
    The delamination container according to claim 9, wherein the reduced diameter surface is curved toward the inside of the container main body in a cross section that is parallel to the central axis of the container main body and passes through the connection surface.
11. 11. The delamination container according to claim 10, wherein the outer shell includes an outside air introduction hole communicating with an outer space of the container body on the reduced diameter surface.
12. At least one of the front side pressing surface and the back side pressing surface includes a base surface and a panel surface formed by recessing the base surface,
    The distance between the front-side pressing surface and the back-side pressing surface is longer than the distance between the pair of connecting surfaces in a cross section perpendicular to the central axis of the container body and passing through the base surface. The delamination container according to any one of claims 2 to 11.
13. In a cross section perpendicular to the central axis of the container body and passing through the panel surface, a distance between the front-side pressing surface and the back-side pressing surface is substantially equal to a distance between the pair of connecting surfaces. The delamination container according to claim 12.
14. The delamination container according to claim 12 or 13, wherein the outer shell includes an outside air introduction hole communicating with an outer space of the container body on the base surface.
15. The laminated peeling container according to any one of claims 2 to 14, wherein the inner bag includes a layer formed of a resin containing a cycloolefin polymer.
16. The delamination container according to claim 1, comprising the configuration (2).
17. The delamination container according to claim 16, wherein a region between the ridge line part is a concave part having a curved surface.
18. 18. The delamination container according to claim 16 or 17, wherein an inclination angle of the ridge portion is 40 ° to 80 ° with respect to a horizontal plane.
19. The laminated peeling container according to any one of claims 16 to 18, wherein the ridge line portion is formed in a spiral shape.
20. It has a mouth part and a body part, and between the mouth part and the body part, there is a shoulder part that gradually decreases in diameter toward the mouth part, and the ridge line part is not formed on the shoulder part. The laminate peeling container according to any one of claims 16 to 19.
21. The delamination container according to claim 1, comprising the configuration (3).
22. The constricted portion has an inclined surface whose diameter gradually decreases from the mouth side toward the bottom side, and an inclined surface whose diameter gradually decreases from the bottom side toward the mouth side, and at least one of the inclined surfaces includes Projections protruding from the inclined surface are formed intermittently in the circumferential direction,
    The laminated peeling container according to claim 21, wherein an uneven portion having the protruding portion as a convex portion and the groove portion between the protruding portions as a concave portion is formed as an uneven portion in the circumferential direction.
23. 23. The delamination container according to claim 22, wherein the concavo-convex portion is formed on both upper and lower inclined surfaces of the constricted portion.
24. 24. The delamination container according to claim 22 or 23, wherein both sides between the projecting portions are inclined surfaces, and the width of the groove portion is enlarged.
25. The constricted portion has an inclined surface whose diameter gradually decreases from the mouth side toward the bottom side, and an inclined surface whose diameter gradually decreases from the bottom side toward the mouth side,
    The delamination container according to claim 21, wherein a concave portion straddling both inclined surfaces with the valley bottom between these inclined surfaces interposed therebetween is formed intermittently in the circumferential direction.
26. The delamination container according to any one of claims 21 to 25, wherein a lower portion of the body portion from the constricted portion has a polygonal cross section.

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