JP2018122867A - Double container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a double container capable of preventing the contact of content with the ambient air in replacing a dispensing cap with a new container body after using all the contents.SOLUTION: A double container of the present invention comprises a container body 1 having a volume-reducingly deformable inner layer body 2 for storing content and an outer layer body 3 containing the inner layer body 2 therein, and a spout cap 4 having a spouting port 8e spouting the content in the inner layer body 2 and attached to a mouth 3a. The container body 1 has a seal member 10 sealing the mouth 3a in an unused time to keep the inner layer body 2 airtight. The spout cap 4 has an opening part opening the mouth 3a by breaking or removing the seal member 10 by attaching the spout cap 4 to the mouth 3a, and a sealing part airtightly abutting on the container body 1 before the opening part opens the mouth 3a.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a double container including an inner layer body that contains contents and an outer layer body that houses the inner layer body inside, and a dispensing cap that is attached to the container body.

  2. Description of the Related Art In recent years, in a container in which a dispensing cap is attached to a container body that contains contents, for example, a double container (a delami container) in which a container body is composed of an inner layer body and an outer layer body as shown in Patent Document 1 , Also referred to as a delamination container). A flexible outer layer body is used for this type of container, and the outer layer body is provided with a vent for taking air into an internal space located between the outer layer body and the inner layer body. The extraction cap is provided with an air valve that prevents the air in the internal space from leaking to the outside while allowing the introduction of air from the outside to the internal space when the internal space is decompressed.

  According to the double container having such a configuration, the inner space is pressurized by pressing the outer layer body, whereby the pressure of the filling space is increased and the contents can be poured out. Further, if the pressure on the outer layer body is released, the inner space is decompressed as the outer layer body is restored, whereby air is introduced from the vent into the inner space and only the inner layer body can be deformed and deformed. That is, the self-supporting property of the container can be maintained even when the content is reduced. Moreover, since the contents can be poured out without replacing with the outside air, there is also an advantage that the quality of the stored contents hardly deteriorates. For this reason, this type of container is being frequently used as a suitable container for containing seasonings such as soy sauce and sauce, and cosmetics such as shampoo, rinse, liquid soap, and lotion.

JP-A-2015-163520

  By the way, a general container is used by removing the pouring cap after the contents are used up and replacing it with a new container body (refill container) filled with the contents. For this reason, even if it exists in the double container mentioned above, there exists a request which wants to reuse such a pouring cap and to utilize such a refill container. However, since the contact between the contents and the outside air is unavoidable when the dispensing cap is attached to the container body, the quality may be deteriorated depending on the contents. That is, since the advantages of the above-mentioned double container cannot be obtained, the use of refill containers has not yet progressed in the field of double containers.

  The present invention aims to solve these problems, and provides a double container capable of avoiding contact between the contents and the outside air when replacing the dispensing cap with a new container body after the contents have been used up. The purpose is to do.

The present invention includes a container body having a volume-deformable inner layer body that contains the contents, and an outer layer body that has a mouth that opens upward and that houses the inner layer body inside,
A double container having a spout for pouring out the contents of the inner layer body and a spout cap attached to the mouth;
The container body has a sealing member that seals the mouth portion and keeps the inner layer body airtight when not in use,
The dispensing cap includes an opening portion that breaks or removes the sealing member by attaching the dispensing cap to the mouth portion to open the mouth portion, and before the opening portion opens the mouth portion. It is a double container which has the sealing part which contact | abuts the said container main body airtightly.

The dispensing cap has an inner wall located on the radially inner side of the mouth part, and an annular outer wall located on the radially outer side of the mouth part,
The opening portion is a sharp portion in which an end portion of the inner wall is sharpened toward the seal member, and the sealing portion is an inner periphery of the outer wall that is in airtight contact with an outer peripheral surface of the mouth portion. A surface is preferred.

  It is preferable that the sealing member is a sheet fixed to an upper end portion of the mouth portion.

The pouring cap has an annular inner wall located on the radially inner side of the mouth,
The seal member has a peripheral wall extending along the inner peripheral surface of the mouth portion, and a partition wall or a sheet that is connected to the peripheral wall and seals the mouth portion,
The opening portion is a sharp portion in which an end portion of the inner wall is sharpened toward the seal member, and the sealing portion is an inner circumferential surface of the inner wall that is in airtight contact with the outer circumferential surface of the circumferential wall. It is preferable that

  The seal member preferably includes the peripheral wall and the partition wall, and also includes a weakened portion provided on at least one of the peripheral wall and the partition wall.

  In the double container of the present invention, the container main body has a seal member that seals the mouth portion and keeps the inner layer body airtight when not in use, and the pouring cap has the pouring cap attached to the mouth portion. Thus, the sealing member has an opening part that breaks or removes the sealing member to open the mouth part, and a sealing part that comes into airtight contact with the container body before the opening part opens the mouth part. That is, when replacing the dispensing cap with a new container body, contact between the contents and the outside air can be avoided as much as possible. Therefore, according to such a double container, even when a new container body is used as a refill container, it is possible to prevent the quality deterioration of the contents caused by contact with the outside air.

It is sectional drawing in the side view which shows one Embodiment of the double container according to this invention. (A) is a figure which shows the state at the time of unused of the container main body shown in FIG. 1, (b) is a figure explaining the condition which equips the container main body of (a) with the extraction | pouring cap. It is sectional drawing in the side view which shows other embodiment of the double container according to this invention. (A) is a figure which shows the state at the time of unused of the container main body shown in FIG. 3, (b) is a figure explaining the condition which equips the container main body of (a) with the extraction | pouring cap.

  Hereinafter, an embodiment of a double container according to the present invention will be described with reference to the drawings. In the present specification and the like, “upper” and “lower” refer to directions when the outer layer body (reference numeral 3) is positioned below and the lid body (reference numeral 9) is positioned upward as shown in FIG. Say.

  The double container of this embodiment is composed of a container main body 1 (consisting of an inner layer body 2 and an outer layer body 3), and a dispensing cap 4 (inner plug 5, check valve 6, moving valve 7, and cap body 8). And a lid 9.

  The inner layer body 2 is provided with a filling space S in which contents can be accommodated. The inner layer body 2 of the present embodiment is made of a thin synthetic resin and is provided so as to be capable of volumetric deformation.

  The outer layer body 3 includes a cylindrical mouth portion 3 a extending along the central axis O. The mouth portion 3a of the present embodiment is composed of a mouth upper portion 3b that opens upward and a mouth lower portion 3c that has a larger diameter than the mouth upper portion 3b. A male screw portion 3d is provided on the outer peripheral surface of the upper mouth portion 3b. Further, the upper mouth portion 3b is provided with a vent 3e that penetrates the upper mouth portion 3b in the radial direction. Then, at the lower end of the mouth lower portion 3c, a cylindrical barrel portion 3f that extends outward in the radial direction and then extends downward along the central axis O, and a bottom portion that closes the lower end of the barrel portion 3f ( (Not shown) is provided. Further, the outer layer body 3 of the present embodiment is made of a synthetic resin, and the trunk portion has flexibility.

  In addition, an internal space N leading to the vent 3e is formed between the inner layer body 2 and the outer layer body 3.

  The inner layer body 2 and the outer layer body 3 in the present embodiment are formed by stacking synthetic resins having low compatibility with each other in a peelable manner. As the synthetic resin constituting the inner layer body 2, a nylon resin (PA), an ethylene vinyl alcohol copolymer resin (EVOH), or a modified polyolefin resin (for example, “Admer” (registered trademark) manufactured by Mitsui Chemicals, Inc.) should be adopted. Can do. Moreover, as a synthetic resin which comprises the outer layer body 3, polypropylene (PP) other than polyethylene resin (PE) including low density polyethylene (LDPE) and high density polyethylene resin (HDPE) can be employ | adopted, for example. Such inner layer body 2 and outer layer body 3 can be obtained by blow molding a parison in which a synthetic resin material forming inner layer body 2 and a synthetic resin material forming outer layer body 3 are laminated, In addition, a test tubular preform in which the synthetic resin material of the inner layer body 2 and the synthetic resin material of the outer layer body 3 are laminated is prepared, and this preform is formed by biaxial stretch blow molding. A body and an outer layer body can be formed separately, and then the inner layer body can be arranged inside the outer layer body. Although not shown in the figure, one or a plurality of adhesive bands extending in the longitudinal direction between the inner layer body 2 and the outer layer body 3 and partially joining the inner layer body 2 and the outer layer body 3 May be provided.

  The inner plug 5 includes a top wall 5a that is located above the mouth 3a and closes the filling space S. A communication port 5b for contents passing through the top wall 5a is provided at the central portion of the top wall 5a. Further, a cylindrical wall 5c having a cylindrical shape as a whole and having a lower diameter reduced with respect to the upper portion is provided beside the communication port 5b for contents.

  In addition, an inner wall 5d located on the inner side in the radial direction of the upper mouth portion 3b is provided on the lower surface of the top wall 5a. The inner wall 5d of the present embodiment has an annular shape. The inner side wall 5d is in airtight and liquid tight contact with the inner layer body 2 with the inner layer body 2 sandwiched between the upper portion 3b of the mouth. Further, the lower end portion of the inner wall 5d is inclined with respect to the horizontal direction, and the lowermost end portion is a pointed portion 5e having a sharp point.

  An annular recess 5f is provided on the top surface of the top wall 5a. An outer edge wall 5g extending upward from the outer edge of the top wall 5a is provided on the radially outer side of the recess 5f. Further, a connecting portion between the top wall 5a and the outer edge wall 5g is provided with an air communication port 5h penetrating therethrough. Note that the inner plug 5 of the present embodiment is formed of a synthetic resin such as polypropylene (PP), for example.

  The check valve 6 is formed of a soft material such as rubber or elastomer, and has a function as an air valve for regulating the flow of air and a function as a dispensing valve for regulating the flow of contents. Have.

  The air valve in the check valve 6 includes an annular base 6a whose lower end is supported by the recess 5f, and a thin-walled portion 6b that is elastically deformable and has an inner edge integrally connected to the base 6a. It is configured.

  The discharge valve in the check valve 6 is located above the content communication port 5b and the cylindrical wall 5c and sits on the top wall 5a to close the content communication port 5b, while the cylindrical wall 5c. Is constituted by a plate-like extraction valve main body 6c that is left open, and a connecting piece 6d that elastically connects the extraction valve main body 6c and the base portion 6a.

  The movement valve 7 is disposed in the cylindrical wall 5c and is provided so as to move along the inner peripheral surface of the cylindrical wall 5c in accordance with a change in the attitude of the container body 1. In the state where the container main body 1 is in the upright posture as shown in FIG. 1, the moving valve 7 is seated on the reduced diameter lower portion of the cylindrical wall 5 c so that the cylindrical wall 5 c and the filling space S are not communicated with each other. It is in a state. In addition, although the thing of the various shape match | combined with the internal peripheral surface of the cylindrical wall 5c is employable as the movement valve 7, the spherical thing is used in this embodiment.

  The cap body 8 of the present embodiment is made of synthetic resin, and is connected to the top wall 8a located above the check valve 6 and the lower surface of the top wall 8a, and is located radially outside the upper portion 3b of the mouth. The outer side wall 8b and the outer peripheral wall 8c extended toward the upper end part of the trunk | drum 3f from the outer edge part of the top wall 8a are provided. Here, an internal thread portion 8d corresponding to the external thread portion 3d is provided on the inner peripheral surface of the outer wall 8b. Further, the inner peripheral surface of the outer wall 8b below the female screw portion 8d is in airtight contact with the outer peripheral surface of the mouth lower portion 3c.

  At the center of the top wall 8a, there is provided a pouring cylinder 8f extending upward from the edge of the hole penetrating the top wall 8a and having the upper opening as a spout 8e for the contents. Further, a recess 8g that supports the upper end of the base portion 6a and a step portion 8h with which the outer edge portion of the thin portion 6b abuts are provided on the lower surface of the top wall 8a.

  The top wall 8a is provided with an outside air inlet 8j penetrating the front and back. Here, between the outside air inlet 8j and the vent 3e, there is provided a communication path through a spiral gap formed between the male threaded portion 3d and the female threaded portion 8d from the air communicating port 5h. Yes. It should be noted that at the position where the vent 3e is provided, a notch for notching the male screw portion 3d in the vertical direction may be provided, and the outside air inlet 8j and the vent 3e may be communicated with each other through this notch.

  The lid body 9 includes a top wall 9a positioned above the top wall 8a and a lid outer peripheral wall 9b that is integrally connected to the top wall 9a. A seal cylinder 9c is provided on the lower surface of the top wall 9a so as to be inserted inside the extraction cylinder 8f and to be in airtight contact with the inner surface of the extraction cylinder 8f. A hinge portion 9d that is integrally connected to the outer peripheral wall 8c of the cap body 8 is provided on the outer peripheral surface of the lid outer peripheral wall 9b. The lid body 9 of the present embodiment is integrally connected to the cap body 8. However, the lid body 9 is provided separately from the cap body 8 and may be detachably attached to the cap body 8 by screws or undercuts. Good.

  In the double container having such a configuration, the inner space N is pressurized by pressing the body portion of the outer layer body 3, thereby increasing the pressure of the filling space S. Then, while raising the pouring valve main body 6c, it flows into the inside of the base portion 6a through the gap around the connecting piece 6d from the content communication port 5b, and is poured out from the pouring outlet 8e through the inside of the pouring cylinder 8f. It is. Here, the communication path connecting the vent 3e and the outside air introduction port 8j is closed with the outer edge portion of the thin portion 6b abutting against the step portion 8h, so that the air in the internal space N does not leak to the outside. Absent. The movement valve 7 in the cylindrical wall 5c is caused by its own weight or contents flowing in from the opening on the lower side of the cylindrical wall 5c in a state where the container body 1 is displaced in a tilted posture so as to dispense the contents. It has moved to the pouring valve body 6c side.

  Thereafter, if the pressure on the outer layer body 3 is released, the pressure of the filling space S returns to the original state, and the extraction valve body 6c is seated on the upper surface of the top wall 5a. It is possible to prevent the outside air from flowing into S. Further, by moving the container body 1 to the original upright posture, the moving valve 7 moves downward due to its own weight or a pressure drop in the filling space S. As a result, a space corresponding to the movement of the moving valve 7 is formed on the upper inner side of the cylindrical wall 5c. Therefore, the content liquid corresponding to the space is discharged from the dispensing cylinder 8f to the cylindrical wall 5c. It can be pulled back in (suck back function), and dripping can be effectively prevented. In addition, since the moving valve 7 moved downward is seated on the reduced diameter lower portion of the cylindrical wall 5c, it is possible to prevent the outside air from flowing into the filling space S from the cylindrical wall 5c. When the internal space N is depressurized along with the restoration of the outer layer body 3, the external air is taken in from the external air introduction port 8j, and the external air is introduced from the vent 3e to the internal space N through the communication path. Thereby, the outer layer body 3 can be restored while the inner layer body 2 is deformed and deformed.

  By the way, after the contents are used up, the pouring cap 4 can be removed from the container body 1 and the pouring cap 4 can be replaced with a new container body 1 filled with the contents. Here, the new container body 1 is provided with a seal member 10 that seals the mouth 3a and keeps the inner layer body 2 airtight when not in use. As shown in FIG. 2A, the sealing member 10 of the present embodiment is a thin sheet that is fixed to the upper end portion of the upper mouth portion 3b (hereinafter, the sealing member 10 is referred to as a sheet 10). In the present embodiment, a cap 11 that is screwed to the male screw portion 3d is provided in order to prevent the sheet 10 from being inadvertently damaged during distribution or the like.

  In mounting the pouring cap 4 on such a new container body 1, the pouring cap 4 is rotated with respect to the container body 1, and the female screw portion 8d is screwed into the male screw portion 3d. Here, as shown in FIG. 2B, immediately before the sharp portion 5e is pressed against the sheet 10, the inner peripheral surface of the outer wall 8b is in airtight contact with the outer peripheral surface of the lower mouth portion 3c. That is, in this state, since the mouth 3a of the container body 1 is blocked from the outside by the outer wall 8b, the female screw 8d is screwed into the male screw 3d to the end, and the sheet 10 is broken by the sharp part 5e. The contact between the contents of the inner layer body 2 and the outside air can be avoided.

  In addition, the inner wall 5d in the present embodiment has a function of preventing the contents from leaking when the outer layer body 3 is displaced in a tilted posture in addition to the function of breaking the sheet 10 and opening the mouth portion 3a. It is to be prepared. For this reason, the inner side wall 5d in the present embodiment is formed in an annular shape and is configured to sandwich the inner layer body 2 with the upper portion 3b of the mouth portion. When the function to prevent is substituted by another, it is not necessary to form the inner side wall 5d in an annular shape, and a gap may be provided between the inner layer body 2 and the inner wall body 2d. Further, a plate-like member having a weakened portion is employed instead of the sheet 10, and when the dispensing cap 4 is replaced, the weakened portion is broken by the inner wall 5d and the mouth portion 3a is opened. May be.

  Next, another embodiment of the double container according to the present invention will be described with reference to FIGS. Note that parts having the same shape and function as those of the above-described embodiment and parts having the same function but different shapes are denoted by the same reference numerals in the drawings, and detailed description thereof is omitted.

  As shown in FIGS. 3 and 4A, the container body 1 in the double container of the present embodiment includes a claw-like engaging portion 3g at the upper end portion of the mouth upper portion 3b in the outer layer body 3. Yes. Further, a sealing member 12 is provided instead of the above-described sheet 10.

  The seal member 12 is made of synthetic resin, and as shown in FIG. 4A, the peripheral wall 12a extending along the inner peripheral surface of the upper portion 3b of the mouth and the mouth 3a connected to the peripheral wall 12a. A partition wall 12b for sealing is provided. The partition wall 12b is provided with a weakened portion 12c having a reduced thickness. An engaged portion 12d corresponding to the engaging portion 3g is provided at the upper end portion of the peripheral wall 12a.

  Note that the inner wall 5d in the above-described embodiment is airtight and liquid-tight to the inner layer body 2 with the inner layer body 2 sandwiched between the upper portion 3b and the upper portion 3b in a state where the dispensing cap 4 is attached to the container body 1. The inner wall 5d of this embodiment is in contact with the outer peripheral surface of the peripheral wall 12a in an airtight and liquid-tight manner as shown in FIG.

  In such a double container of this embodiment, the extraction cap 4 is rotated as shown in FIG. 4B with respect to the new container body 1 shown in FIG. When the portion 3d is screwed in, the inner wall 5d is in airtight contact with the outer peripheral surface of the peripheral wall 12a immediately before the sharp portion 5e is pressed against the partition wall 12b. That is, in this state, the mouth portion 3a of the container body 1 is blocked from the outside by the peripheral wall 12a and the partition wall 12b. Even if it is made to contact, the contact of the contents of the inner layer body 2 and the outside air can be avoided.

  In addition, although the sealing member 12 in this embodiment equips the partition 12b with the weakening part 12c, you may provide the weakening part 12c in the surrounding wall 12a. Further, the sealing member 12 has the partition wall 12b integrally connected to the peripheral wall 12a. However, the seal member 12 may be a member in which a sheet is fixed to the lower end portion of the peripheral wall 12a instead of the partition wall 12b.

  The double container according to the present invention is not limited to the embodiments described so far, but includes various modifications within the scope of the claims. For example, the sealing member that seals the mouth portion is broken by the sharp portion in the embodiments described so far, but is removed from the mouth portion by attaching a pouring cap. Also good. For example, when the engaged portion 12d is omitted from the seal member 12 shown in FIG. 3 and the pouring cap 4 is attached, the inner wall 5d pushes the partition wall 12b and the seal member 12 opens. It may be configured to drop off from the part 3a. In this case, it is not necessary to provide the sharp portion 5e on the inner wall 5d, and the lower end of the inner wall 5d may extend in the horizontal direction. Further, the weakening unit 12c may be omitted.

1: Container body 2: Inner layer body 3: Outer layer body 3a: Mouth part 3b: Mouth upper part 3c: Mouth lower part 3d: Male screw part 3e: Vent 3f: Body part 3g: Engaging part 4: Discharge cap 5 : Inner plug 5a: Ceiling wall 5b: Content communication port 5c: Cylindrical wall 5d: Inner side wall 5e: Sharp portion 5f: Recessed portion 5g: Outer edge wall 5h: Air communication port 6: Check valve 6a: Base portion 6b: Thin portion 6c: Discharge valve body 6d: Connection piece 7: Movement valve 8: Cap body 8a: Top wall 8b: Outer wall 8c: Outer wall 8d: Female thread 8e: Spout 8f: Discharge cylinder 8g: Recess 8h: Step 8j: Outside air inlet 9: Lid 9a: Top wall 9b: Lid outer wall 9c: Seal cylinder 9d: Hinge 10: Seal member (seat)
11: cap 12: seal member 12a: peripheral wall 12b: partition wall 12c: weakened portion 12d: engaged portion N: internal space O: central axis S: filling space

Claims (5)

A container body having a volume-deformable inner layer body that contains the contents, and an outer layer body that has an opening that opens upward and that houses the inner layer body;
A double container having a spout for pouring out the contents of the inner layer body and a spout cap attached to the mouth;
The container body has a sealing member that seals the mouth portion and keeps the inner layer body airtight when not in use,
The dispensing cap includes an opening portion that breaks or removes the sealing member by attaching the dispensing cap to the mouth portion to open the mouth portion, and before the opening portion opens the mouth portion. The double container which has a sealing part which contact | abuts airtightly to the said container main body. The dispensing cap has an inner wall located on the radially inner side of the mouth part, and an annular outer wall located on the radially outer side of the mouth part,
The opening portion is a sharp portion in which an end portion of the inner wall is sharpened toward the seal member, and the sealing portion is an inner periphery of the outer wall that is in airtight contact with an outer peripheral surface of the mouth portion. The double container according to claim 1, which is a surface.   The double container according to claim 1, wherein the seal member is a sheet fixed to an upper end portion of the mouth portion. The pouring cap has an annular inner wall located on the radially inner side of the mouth,
The seal member has a peripheral wall extending along the inner peripheral surface of the mouth portion, and a partition wall or a sheet that is connected to the peripheral wall and seals the mouth portion,
The opening portion is a sharp portion in which an end portion of the inner wall is sharpened toward the seal member, and the sealing portion is an inner circumferential surface of the inner wall that is in airtight contact with the outer circumferential surface of the circumferential wall. The double container according to claim 1.   The double container according to claim 4, wherein the seal member has the peripheral wall and the partition wall, and has a weakened portion provided on at least one of the peripheral wall and the partition wall.

Images