JP2019210003A - Delamination container - Google Patents

Abstract

To provide a delamination container which can perform inner layer leak tests advantageously and has a plug receiving part.SOLUTION: A delamination container 1 includes a bottle-shaped outer layer body 2 with a mouth part 11, a body part 12 and a bottom part 13 and a volume-reducing-deformable inner layer 3 which is peelably laminated on the inner surface of the outer layer 2, and is provided with an outside air introduction opening 14 connected between the outer layer body 2 and the inner layer body 3 at the mouth part 11; and the delamination container 1 is characterized as such that it has a plug receiving part 15 positioned at the mouth part 11, an annular smooth surface 20 positioned at least farther outside than the plug receiving part 15 in the top view and a non-annular smooth surface 21 positioned at least outside of the annular smooth surface 20 in the top view.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a delamination container in which a volume-reducing and deformable inner layer body is releasably laminated on the inner surface of a bottle-shaped outer layer body, and in particular, an outside air inlet port connected between the outer layer body and the inner layer body is a mouth. It relates to what is provided.

  As a container for storing cosmetics such as lotion, toiletries such as shampoo and rinse or liquid soap, food seasonings such as soy sauce, etc., the bottle-shaped outer layer body and the inner surface of the outer layer body are detachably laminated. A delamination container (also referred to as a delamination container) is known (for example, a patent), which has an inner layer body that can be reduced in volume and has an outer air inlet that is connected between the outer layer body and the inner layer body. Reference 1).

  At the mouth of the delamination container, for example, a pouring cap having a structure in which a check tube is provided in a pouring cylinder for pouring contents, and a check valve is provided in an opening that communicates the outside air introduction port Is installed. The delamination container equipped with such a pouring cap can squeeze (press) the body part to squeeze the contents, while the squeeze of the body part is released, the outside air introduction port Since the outside layer is reduced in volume by introducing outside air between the outer layer body and the inner layer body, that is, only the outer layer body can be restored to the original shape without replacing the contents with the outside air. The contact between the contents and the outside air can be suppressed, and deterioration and alteration of the contents stored in the container can be suppressed.

JP 2007-290746 A

  The laminated peeling container having the above configuration is generally subjected to an initial peeling treatment of the inner layer body in the manufacturing process. The initial peeling process of the inner layer body is to form a delamination container by blow molding, and then suck out the air inside the inner layer body from the mouth, or blow air into the space between the outer layer body and the inner layer body from the outside air inlet. Then, the inner layer body is once separated from the outer layer body, and then air is supplied from the mouth into the inner layer body to return the inner layer body to the outer layer body side. By performing such an initial peeling process, the inner layer body can be easily peeled from the outer layer body, and when the outer layer body is restored to its original shape after the contents are poured out, the inner layer body is reliably removed from the outer layer body. Can be peeled off.

  Moreover, after such an initial peeling process, a leak test for confirming the presence or absence of a leak (opening) of the inner layer body can be performed as necessary. The leak test is performed by blowing air into the space between the outer layer body and the inner layer body from the outside air inlet, pressurizing the space, and detecting whether or not the pressure in the space is reduced due to the air leak to the mouth. However, such a method may increase the load on the inner layer body and may cause the inner layer body to break. For this reason, it is desirable to expand the outer layer body by reducing the pressure from the outside, thereby forming a gap between the outer layer body and the inner layer body, and performing a leak test on the inner layer body in this state.

  In order to depressurize the outer layer body from the outside in this way, it is necessary to use a leak test housing including an annular seal portion that seals the outer peripheral surface of the outer layer body over the entire circumference in a portion below the outside air inlet. it can. In this case, the housing may include a lower housing and an upper housing that includes the annular seal portion and that can be raised and lowered with respect to the lower housing. Then, when the delamination container is configured to have a sealing annular step at the lower part of the mouth, the upper housing is lowered to bring the annular seal part into close contact with the annular step of the delamination container, By bringing the upper housing into close contact with the lower housing, a vacuum space for a leak test can be formed by the outer layer body, the upper housing, and the lower housing.

  In this way, when the delamination container has an annular seal portion, the delamination container is, for example, a square bottle having a body portion having a polygonal cross-sectional shape or an outside air having a circular cross-sectional shape. Even in the case of a configuration having vertical ribs for forming the introduction path, that is, in the case of having a non-circular smooth surface located outside the mouth portion in a top view, the leak test can be performed by the method described above. However, when the mouth portion has a receiving portion (neck ring) for stoppering, it is difficult to perform a leak test by such a method. This is because, in the case of a delamination container having an outside air introduction port at the mouth portion, the neck ring located at the mouth portion is provided with an intermittent portion in the circumferential direction to facilitate the formation of the outside air introduction path. This is because the above cannot be used as the annular seal portion described above.

  An object of the present invention is to solve such problems, and an object of the present invention is to provide a delamination container having a receiving part for stoppering, which can advantageously perform a leak test of an inner layer body. It is to provide.

  The delamination container of the present invention is a bottle-shaped outer layer body provided with a cylindrical mouth portion, a body portion connected to the mouth portion, and a bottom portion connected to the body portion, and is peelably laminated on the inner surface of the outer layer body. A delamination container having a volume-reducing and deformable inner layer body corresponding to the outer layer body, and having an opening for introducing outside air connected between the outer layer body and the inner layer body at the mouth. A stopper receiving portion located in the mouth, an annular smooth surface positioned at least outside the receiving portion in a top view, and a non-annular smooth surface positioned at least outside the annular smooth surface in a top view. It is characterized by having.

  In the above configuration, the delamination container according to the present invention has a shoulder portion in which the trunk portion is continuous with the receiving portion and has a diameter that expands downward, and a trunk main body portion that has a substantially constant outer shape connected to the shoulder portion. The annular smooth surface is preferably provided on the shoulder portion.

  In the laminated peeling container of the present invention, in the above configuration, it is preferable that the non-annular smooth surface is located outside and inside the annular smooth surface in a top view.

  In the laminated peeling container of the present invention, in the above configuration, the cross-sectional shape of the non-annular smooth surface is preferably a polygonal shape.

  In the above-described configuration, the laminated peeling container of the present invention preferably has a regular polygonal shape in cross section of the non-annular smooth surface.

  The laminated peeling container of the present invention is preferably configured so that the non-annular smooth surface has vertical ribs.

  ADVANTAGE OF THE INVENTION According to this invention, the delamination container which has the receiving part for stoppers which can perform the leak test of an inner-layer body advantageously can be provided.

It is a side view of the lamination peeling container which is one Embodiment of this invention. It is a top view of the lamination peeling container shown in FIG. It is a side view of the lamination peeling container which is other embodiment of this invention. It is a top view of the lamination peeling container shown in FIG.

  Hereinafter, the present invention will be described in more detail with reference to the drawings.

  In this specification, claims, and abstract, “up and down direction” means the up and down direction based on the posture shown in FIG. 1, that is, “upward” means the upper direction in FIG. And “downward” means the opposite direction.

  As shown in FIGS. 1 to 2, a delamination container 1 according to an embodiment of the present invention has a synthetic resin outer layer body 2 that constitutes an outer shell of the delamination container 1. The outer layer body 2 has a bottle shape including a cylindrical mouth portion 11, a body portion 12 that is continuous with the mouth portion 11, and a bottom portion 13 that is continuous with the body portion 12. A shoulder portion 12a that is continuous with the lower end and expands downward, and a trunk body portion 12b with a substantially constant outer diameter that is continuous with the shoulder portion 12a. The trunk portion 12 has a predetermined rigidity and can be squeezed (pressed) to be recessed, and when the squeeze is released, the body portion 12 can be restored from the recessed state to the original shape.

  An inner layer body 3 is provided inside the outer layer body 2. The inner layer body 3 is formed in a bag shape thinner than the outer layer body 2 by a synthetic resin material, and is laminated on the inner surface of the outer layer body 2 so as to be peelable, and has a shape corresponding to the shape of the outer layer body 2. . Although not shown in detail, the opening of the inner layer body 3 is connected to the opening end of the mouth portion 11 of the outer layer body 2, and the inside of the inner layer body 3 is a housing space S that is connected to the opening. Liquid contents such as cosmetics such as lotion, toiletries such as shampoo and rinse or liquid soap, and food seasonings such as soy sauce can be accommodated in the inner layer 3, that is, the accommodation space S. . The inner layer body 3 is volume-reducible and deformable, and can be volume-reduced and deformed so as to peel from the inner surface of the outer layer body 2 and reduce the volume of the accommodating space S as the contents are poured out.

  Here, the inner layer body 3 is “releasably laminated” on the inner surface of the outer layer body 2 means that the inner layer body 3 laminated in a state of being bonded, pseudo-adhered or welded to the inner surface of the outer layer body 2, It includes not only that the outer layer body 2 can be peeled off, but also that the inner layer body 3 simply laminated in close contact with the inner surface of the outer layer body 2 is separated from the outer layer body 2.

  An elongated strip-shaped adhesive band extending from the mouth portion 11 to the bottom portion 13 is provided between the outer layer body 2 and the inner layer body 3, and the outer layer body 2 and the inner layer body 3 are bonded to each other at the adhesive band portion. It can also be configured. If the adhesive strip is provided on one side in the circumferential direction of the delamination container 1, it may be one or two or more. For example, two adhesive bands are provided with a parting line in between. be able to.

  The delamination container 1 is formed by coextruding a synthetic resin material for an outer layer body and a synthetic resin material for an inner layer body having low compatibility to form a laminated parison, and the laminated parison is blow-molded using a mold. Thus, the inner layer body 3 is formed on the inner surface of the outer layer body 2 so that the inner layer body 3 can be peeled off. The delamination container 1 can also be formed by biaxial stretching blow molding a preform having a laminated structure formed in advance by injection molding or the like.

  For example, a pouring tool (not shown) such as a pouring cap having a structure in which a check pipe is provided in a pouring cylinder for pouring contents is attached to the mouth portion 11 by a stopper, and the pouring tool is inserted through the pouring tool. The contents are poured out. When such an exfoliation cap of the above-mentioned composition is attached to mouth part 11, such a lamination exfoliation container 1 pours out contents from mouth part 11 by squeezing trunk 12 of outer layer body 2. Can do. When the outer layer body 2 is restored to its original shape after the contents are poured out, since the outside air flows between the outer layer body 2 and the inner layer body 3 from the outside air inlet 14 described later, the inner layer body 3 is accommodated. The outer layer body 2 can be restored to the original shape while the volume of the space S is reduced and deformed. Therefore, after the contents are poured out, the outside air is prevented from flowing into the accommodation space S of the inner layer body 3 from the mouth portion 11, thereby suppressing the contents accommodated in the accommodation space S from coming into contact with air. , Its deterioration and alteration can be prevented.

  It should be noted that a pump as a pouring tool at the mouth portion 11 or other pouring caps such as a pouring cap configured to pour out the contents housed in the housing space S of the inner layer body 3 by its own weight by tilting the outer layer body 2. It is also possible to wear a dispenser of construction.

  The mouth portion 11 is provided with a locking projection 11a for attaching the pouring tool to the mouth portion 11 by a stopper. The locking protrusion 11a can lock the pouring tool to the mouth portion 11 by undercut engagement with a locking groove provided on the inner peripheral surface of the pouring tool mounting cylinder. The locking projections 11a are formed in a pair of arcs having intermittent portions at two locations facing each other across the central axis O of the delamination container 1 or the mouth portion 11 in a top view.

  The mouth portion 11 of the outer layer body 2 is provided with a pair of outside air introduction ports 14. Each of these outside air inlets 14 is formed in a circular shape, and is arranged in an intermittent portion of the locking projection 11a and is arranged symmetrically with respect to the central axis O. These outside air inlets 14 respectively penetrate the outer layer body 2 and communicate with each other between the outer layer body 2 and the inner layer body 3, and when the inner layer body 3 peels from the outer layer body 2, the outer layer body 2 and the inner layer body The outside air can be introduced into the gap with 3. In addition, the part by which the external air introduction port 14 of the opening part 11 is provided, ie, the intermittent part of the latching protrusion 11a, is chamfered flat.

  A stopper (neck ring) 15 for stoppering is provided at the lower portion of the mouth portion 11. The neck ring 15 protrudes radially outward from the outer peripheral surface of the mouth portion 11 and extends in the circumferential direction. Further, the neck ring 15 is provided with notches 15a at a plurality of positions in the circumferential direction. In the present embodiment, notches 15a are provided in a total of four places, two places corresponding to each outside air introduction port. These notches 15 a are located obliquely below the outside air inlet 14. By providing the neck ring 15 in the mouth portion 11, when a pouring tool such as a pouring cap is attached to the mouth portion 11 with a stopper, the neck ring 15 can be locked with a stopper for stoppering. it can.

  The shoulder portion 12a of the body portion 12 is provided with a conical annular smooth surface 20 located outside the neck ring 15 in a top view. The annular smooth surface 20 is not limited to a conical shape as long as it is made of a smooth surface continuously extending over the entire circumference in the circumferential direction. In the present embodiment, the entire annular smooth surface 20 is located outside the neck ring 15 in a top view, but at least a part thereof may be located outside the neck ring 15 in a top view. Further, the body portion 12 is provided with a non-annular smooth surface 21 positioned outside and inside the annular smooth surface 20 in a top view. In the present embodiment, the cross-sectional shape of the non-annular smooth surface 21 (the shape in the cross section perpendicular to the central axis O of the mouth portion 11) is a regular decagon. However, the cross-sectional shape of the non-circular smooth surface 21 may be a regular polygon other than a regular decagon, or a regular polygon that is curved so that each side of the regular polygon bulges radially outward. There may be. Further, the cross-sectional shape of the non-annular smooth surface 21 may be a polygon other than a regular polygon, or may be a polygon that is curved so that each side of the polygon bulges radially outward. Good. In the present embodiment, the non-annular smooth surface 21 forms a non-smooth annular surface due to the polygonal cross-sectional shape, while the annular smooth surface 20 has a circular cross-sectional shape and a vertical rib. A smooth annular surface is formed by not having the uneven portions such as. In addition, the cross-sectional shape of the annular smooth surface 20 is not limited to a circle, but may be an ellipse. In the present embodiment, the non-annular smooth surface 21 is provided over substantially the entire portion of the body 12 excluding the annular smooth surface 20, but is not limited to such a configuration, and is provided only in the shoulder portion 12a, for example. May be.

  In the present embodiment, the non-annular smooth surface 21 has a straight polygonal pyramid shape (partially a polygonal column shape) with a constant cross-sectional shape facing downward, but the cross-sectional shape is downwardly facing. A twisted polygonal pyramid shape that changes so as to be twisted (partially a twisted polygonal column shape) may be formed. In addition, in order to connect each plane part which comprises the non-annular smooth surface 21, and the curved surface (conical surface) part which comprises the annular smooth surface 20 between the annular smooth surface 20 and the non-annular smooth surface 21, respectively. A bulging portion 22 that bulges from the plane portion is provided. Although the bulging part 22 is provided two each at 10 places in the circumferential direction, the reference numerals of the bulging part 22 are shown in only one place in the circumferential direction in FIGS.

  In the delamination container 1 having such a configuration, an annular smooth surface 20 located outside the neck ring 15 in a top view and a non-annular smooth surface 21 located outside the annular smooth surface 20 in a top view are provided. Therefore, although the neck ring 15 is provided, the leak test of the inner layer body 3 described above can be advantageously performed after the initial peeling process of the inner layer body 3 is performed. That is, the upper housing constituting the leak test housing (not shown) is lowered, the annular seal portion of the upper housing is brought into close contact with the annular smooth surface 20 of the delamination container 1, and the upper housing is brought into close contact with the lower housing. Thus, a decompression space for a leak test can be formed by the outer layer body 2, the upper housing, and the lower housing.

  In the present embodiment, since the non-annular smooth surface 21 is provided on the outer side and the inner side of the annular smooth surface 20 in a top view, the non-annular smooth surface 20 and the non-smooth surface 20 of the body 12 having a complicated shape or configuration. In the vicinity of the connecting portion (bulged portion 22) with the annular smooth surface 21, a gap may be generated between the outer layer body 2 and the inner layer body 3 without bringing the outer layer body 2 and the inner layer body 3 into close contact with each other. it can. That is, the laminated peeling container 1 that has undergone the initial peeling treatment and the subsequent leak test is at least between the outer layer body 2 and the inner layer body 3 in the trunk portion 12 and around the connecting portion between the annular smooth surface 20 and the non-annular smooth surface 21. It becomes a thing of the structure by which the clearance gap was provided in.

  For example, after the delamination container 1 is formed by blow molding, air inside the inner layer body 3 is sucked out from the mouth portion 11, or air is blown into the space between the outer layer body 2 and the inner layer body 3 from the outside air introduction port 14. Then, the inner layer body 3 is once peeled off from the outer layer body 2, and then air is supplied into the inner layer body 3 from the mouth 11 to return the inner layer body 3 to the original state laminated on the outer layer body 2. The initial peeling process of the inner layer body 3 can be performed. After this initial peeling process and the subsequent leak test, the inner layer body 3 peeled from the outer layer body 2 is again laminated on the inner surface of the outer layer body 2. A displacement occurs between the periphery of the connecting portion between the surface 20 and the non-annular smooth surface 21 and the periphery of the connecting portion between the annular smooth surface 20 and the non-annular smooth surface 21 of the inner layer body 3. It becomes difficult to adhere to the inner surface of the outer layer body 2. As a result, a gap is generated between the outer layer body 2 and the inner layer body 3, and the inner layer body 3 is easily peeled off from the outer layer body 2 in this portion.

  Further, after such an initial peeling process, the inner layer body 3 can form a gap with the outer layer body 2 without returning to the polygonal cross-sectional shape before the initial peeling process. In particular, when the delamination container 1 has a configuration in which an adhesive band is provided between the outer layer body 2 and the inner layer body 3, by performing an initial peeling process, a flat surface portion where the adhesive band is formed, or A gap can be generated between the outer layer body 2 and the inner layer body 3 in the flat surface portion adjacent to the flat surface portion in a top view. This is because the inner layer body 3 is in contact with the flat surface portion far from the adhesive band, while the inner layer body 3 adheres to the flat surface portion due to plastic deformation of the adhesive band that occurs in the initial peeling process in the portion near the adhesive band. It is because it is suppressed. Thus, in this Embodiment, since the cross-sectional shape of the non-annular smooth surface 21 is polygonal shape, the lamination peeling container 1 which passed the initial peeling process and the subsequent leak test is the outer layer body 2, the inner layer body 3, and In the meantime, a gap extending in the vertical direction from the periphery of the connecting portion between the annular smooth surface 20 and the non-annular smooth surface 21 is provided.

  Therefore, after the outer layer body 2 is squeezed and the contents are poured out, the inner layer body 3 can be reliably peeled from the outer layer body 2 when the outer layer body 2 is restored to its original shape. Further, since the annular smooth surface 20 is provided on the shoulder portion 12a, the annular smooth surface 20 is directed from the outside air inlet 14 to the bottom 13 side by a gap generated around the connection portion between the annular smooth surface 20 and the annular non-smooth surface 21. An outside air introduction path is effectively formed. Therefore, after the contents are poured out, when the outer layer body 2 is restored to its original shape, the outside air sucked in between the outer layer body 2 and the inner layer body 3 from the outside air inlet 14 It is possible to surely flow to the bottom 13 side through the outside air introduction path including a gap generated around the connection portion between the annular smooth surface 20 and the annular non-smooth surface 21. Therefore, when the outer layer body 2 is restored to its original shape after the contents are poured out, the inner layer body 3 is surely peeled from the outer layer body 2 from the bottom 13 side toward the body 12 side. Thus, it is possible to reliably prevent outside air from being introduced into the accommodation space S of the inner layer body 3. Further, the inner layer body 3 is easily peeled from the outer layer body 2, so that the squeezed outer layer body 2 can surely return to its original shape, and deformation of the outer layer body 2 can be prevented.

  Furthermore, even in the configuration in which the neck ring 15 is provided at the lower end of the mouth portion 11 as in the present embodiment, the notch portion 15a is provided in the obliquely lower portion of the outside air introduction port 14 of the neck ring 15, By making it easy to peel the inner layer body 3 from the outer layer body 2 at the portion where the notch 15a is provided, the gap formed around the connecting portion between the annular smooth surface 20 and the non-annular smooth surface 21 from the outside air inlet 14 It is possible to reliably introduce outside air.

  FIG. 3 is a side view of a delamination container that is another embodiment of the present invention. FIG. 4 is a plan view of the delamination container shown in FIG. 3 to 4, members corresponding to those described above are denoted by the same reference numerals.

  As shown in FIGS. 3 to 4, the delamination container 1 can also be configured such that the non-annular smooth surface 21 has vertical ribs 23. In the present embodiment, the vertical ribs 23 have a concave rib shape extending in the vertical direction, but may have a convex rib shape extending in the vertical direction. 3 to 4 show a case where a non-annular smooth surface 21 is provided that forms a non-smooth annular surface by having the vertical ribs 23 although the cross-sectional shape is circular. 3 to 4, the outer edge of the non-annular smooth surface 21 is indicated by a two-dot chain line. In the present embodiment, the non-annular smooth surface 21 is provided on the outer and inner sides of the annular smooth surface 20 in a top view. In addition, the non-annular smooth surface 21 is provided only on the shoulder portion 12a in the present embodiment, but may be provided on the shoulder portion 12a and the trunk body portion 12b. The non-annular smooth surface 21 may have a configuration in which the longitudinal ribs 23 are included and the cross-sectional shape is a polygonal shape.

  In the present embodiment, the vertical ribs 23 are provided at a total of four locations at two locations corresponding to each of the outside air inlets 14 on the inner side as viewed from above the annular smooth surface 20. Further, on the outer side of the annular smooth surface 20 in a top view, four ribs are provided at four locations corresponding to the respective outside air inlets 14, for a total of eight locations. Further, two vertical ribs 23 located on the inner side in the circumferential direction among the four positions positioned on the outer side of the annular smooth surface 20 corresponding to the respective external air introduction ports 14 are positioned on the inner side in the upper surface view. 23 is provided on the extension line. However, the number and arrangement of the vertical ribs 23 can be changed as appropriate.

  In the multilayer peeling container 1 having such a configuration, the leak test of the inner layer body 3 can be advantageously performed after the initial peeling process of the inner layer body 3 is performed as in the case of the above-described embodiment. Further, in the present embodiment, since the non-annular smooth surface 21 is provided on the outer side and the inner side of the annular smooth surface 20 in a top view, after performing the initial peeling process of the inner layer body 3 and the subsequent leak test, An annular smooth surface of the body 12 having a more complicated shape or configuration while forming a gap in the portion of the non-annular smooth surface 21 where the vertical ribs 23 are provided without causing the inner layer body 3 to adhere to the inner surface of the outer layer body 2. In the vicinity of the connecting portion (end portion of the longitudinal rib 23) between the non-circular smooth surface 21 and the non-annular smooth surface 21, there is a gap between the outer layer body 2 and the inner layer body 3 without bringing the outer layer body 2 and the inner layer body 3 into close contact with each other. Can be generated. That is, the laminated peeling container 1 that has undergone the initial peeling treatment and the subsequent leak test is between the outer layer body 2 and the inner layer body 3 in the trunk portion 12 from the periphery of the connecting portion between the annular smooth surface 20 and the non-annular smooth surface 21. It becomes the thing of the structure by which the clearance gap extended in an up-down direction was provided.

  Therefore, when the outer layer body 2 is restored to its original shape after the contents are poured out, the outside air sucked in between the outer layer body 2 and the inner layer body 3 from the outside air introduction port 14 The outer layer body 2 is restored to its original shape by surely flowing through the outside air introduction path including the gap and the gap around the connecting portion between the annular smooth surface 20 and the non-annular smooth surface 21 to the bottom 13 side. In this case, the inner layer body 3 can be reliably peeled from the outer layer body 2 from the bottom 13 side toward the body 12 side.

  It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.

  For example, in each of the embodiments described above, the non-annular smooth surface 21 is provided on the outer side and the inner side of the annular smooth surface 20 in a top view, but may be provided only on the outer side of the annular smooth surface 20 in a top view. Good.

DESCRIPTION OF SYMBOLS 1 Lamination peeling container 2 Outer layer body 3 Inner layer body 11 Mouth part 11a Locking protrusion 12 Trunk part 12a Shoulder part 12b Trunk body part 13 Bottom part 14 Outside air introduction port 15 Neck ring (receiving part)
15a notch 20 annular smooth surface 21 non-annular smooth surface 22 bulging portion 23 vertical rib S accommodation space O central axis

Claims (6)

A bottle-shaped outer layer body provided with a cylindrical mouth part, a body part connected to the mouth part, and a bottom part connected to the body part, and a shape corresponding to the outer layer body by being peelably laminated on the inner surface of the outer layer body A delamination container having a volume-reducing and deformable inner layer body, wherein the mouth portion is provided with an outside air introduction port continuous between the outer layer body and the inner layer body,
A receiving part for a stopper located in the mouth part;
An annular smooth surface located at least outside the receiving portion in top view;
And a non-annular smooth surface positioned at least outside the annular smooth surface in a top view.   The trunk portion has a shoulder portion that continues to the receiving portion and expands in a downward direction, and a trunk body portion that has a substantially constant outer shape continuous to the shoulder portion, and the annular smooth surface is provided on the shoulder portion. The delamination container according to claim 1.   The said non-annular smooth surface is a lamination peeling container of Claim 1 or 2 located in the outer side and the inner side of the said annular smooth surface by upper surface view.   The lamination peeling container according to any one of claims 1 to 3 whose cross section shape of said non-annular smooth surface is polygonal shape.   The lamination peeling container according to claim 4 whose cross section shape of said non-annular smooth surface is a regular polygon shape.   The laminate peeling container according to any one of claims 1 to 5, wherein the non-annular smooth surface has vertical ribs.

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