JP2020040723A - Packaging container - Google Patents

Abstract

To provide a packaging container capable of suppressing a container body from buckling when a pump dispenser is pressed, and also suppressing content fluid from remaining in the container body.SOLUTION: The present invention relates to a packaging container including a pump dispenser with a pump part capable of pumping up content fluid by being pressed perpendicularly down. The pump dispenser comprises a substantially cylindrical support member which extends from a lower end edge of the pump part and provided with one or more cuts atop, and a suction tube which has one end linked to the inside of the pump part inside the support member, and can have at least the other end put outside the support member through the cuts while fitted to a container body. At least when the pump part is pressed perpendicularly downward, the support member has a front lower end face thereof brought into contact with a reverse surface of the container body and the other end of the suction tube rotates on an axis of the support member as the pump part is rotated on the axis of the support member.SELECTED DRAWING: Figure 1

Description

  2. Description of the Related Art A packaging container including a container body and a pump dispenser that is inserted into and attached to a through hole formed in an upper portion of the container body and that can pump out a liquid content by pressing a pump head is known.

  For example, Patent Literature 1 discloses a packaging container including a container body formed in a box shape using a sheet material made of paper as a base material, and a pump dispenser attached to a spout (grommet) on the upper surface of the container body. (Liquid container) is disclosed. The pump dispenser of the packaging container is formed using a hard material, and includes a tube having a length substantially equal to a distance from a lower end of the pump unit to a bottom surface of the container body. According to this packaging container, the tube serves as a support member for the pump dispenser, and buckling of the container main body caused by pressing the pump dispenser toward the container main body can be suppressed.

JP-A-8-85561

  In such a pump dispenser, the tube has a predetermined rigidity to suppress buckling of the container body. For this reason, the position where the tip of the tube contacts the container body is limited to a narrow range. For this reason, if the content liquid remains at a position distant from the portion where the tube and the container body are in contact with each other, it becomes difficult to aspirate with the pump dispenser, and a large amount of the content liquid may remain.

  The present invention has been made in view of such a problem, and suppresses buckling of a container main body when a pump dispenser is pressed toward a container main body, and also suppresses content liquid from remaining in the container main body. It is an object of the present invention to provide a packaging container which can be used.

  One aspect of the present invention for solving the above-described problem is that the container body is attached to the container body by being inserted into a through hole formed in an upper portion of the container body, and being pushed vertically downward to the container body. A pump dispenser having a pump unit capable of pumping out the stored content liquid, wherein the pump dispenser extends from the lower end edge of the pump unit and is attached to the container body. A substantially cylindrical support member disposed inside and provided with one or more notches at a tip thereof, and at least one end communicated with the inside of the pump unit inside the support member and attached to the container body. The other end is provided with a suction tube that can be drawn out of the support member through the notch, and the support member vertically moves at least the pump portion vertically downward. When pressed down, the lower end surface of the tip abuts against the lower surface of the container body, and the other end of the suction tube rotates around the axis of the support member by rotating the pump unit around the axis of the support member. Container.

  ADVANTAGE OF THE INVENTION According to this invention, while suppressing the buckling of a container main body when a pump dispenser is pressed toward a container main body, it can provide the packaging container which can suppress that a content liquid remains in a container main body.

Exploded perspective view of a packaging container according to an embodiment of the present invention. Sectional view of a packaging container according to an embodiment of the present invention. Enlarged view of a support member according to an embodiment of the present invention. The figure which shows the shape of the support member which concerns on an Example and a comparative example.

  A packaging container according to an embodiment of the present invention will be described with reference to the drawings. Further, in the following description, for convenience, the upper and lower sides in a state where the packaging container is erected are referred to as up and down directions.

<Embodiment>
FIG. 1 shows an exploded perspective view of a packaging container 100 according to one embodiment of the present invention. As shown in FIG. 1, the packaging container 100 includes a container main body 200 and a pump dispenser 300 mounted on a spout 280 mounted on the upper surface 210 of the container main body 200. FIG. 2 is a cross-sectional view of the packaging container 100 with the pump dispenser 300 attached to the container body 200, taken along the line AA 'in FIG. FIG. 3 shows an enlarged front view and a bottom view of a tip of a support member 330 of the pump dispenser 300 described later.

(Container body)
The container main body 200 is a semi-rigid container formed so as to have such a rigidity that the shape can be maintained irrespective of the remaining amount of the content liquid when there is no pressure difference between the inside and the outside of the container main body 200. The container body 200 can be formed, for example, by cutting a sheet material including paper or a resin sheet into a predetermined shape to form a blank, and overlapping and sealing the ends of the blank. In general, a semi-rigid container main body can maintain its shape independently of the remaining amount of the content liquid and maintain its shape as long as a pressure difference does not occur between the inside and the outside due to the entry of air as the content liquid is pumped out. It has a degree of rigidity.

  As shown in FIGS. 1 and 2, the container main body 200 is formed by folding a sheet material made of, for example, paper as a box into a box shape. The container includes a side surface 221 and a pair of second side surfaces 222 facing each other.

  The upper surface 210 includes an opening 211 that communicates the housing space of the container body 200 with the outside. A spout 280 having a through hole is attached to the opening 211. As shown in FIGS. 1 and 2, the pump dispenser 300 is used by being inserted into a through hole of the spout 280. In order to facilitate insertion of the pump dispenser 300, the inner diameter of the through hole of the spout 280 is preferably 15 mm or more.

  A bent piece 250 is connected to each of both side ends of the first side surface 221 and the second side surface 222 in a state of being bent in a triangular shape. Further, a side seal portion 240 having a predetermined width formed by sealing the end portion of the sheet material extends from the center in the vertical direction of the first side surface 221 and a bent piece 250 connected to both side ends of the first side surface 221. Is out.

  The bent piece 250 is bent toward the second side surface 222 and is attached to the surface of the second side surface 222 by heat sealing, hot melt adhesive or the like. As a result, the side seal portion 240 is bent along the first side surface 221 and the second side surface 222.

  The container body 200 is not limited to this form, and may be, for example, a self-supporting flexible packaging bag, brick pack, or the like.

  The sheet material used for forming the container body 200 is not particularly limited, but a laminate made of paper as a base material can be suitably used. The sheet material is formed by, for example, laminating a printing layer / a thermoplastic resin layer / a paper substrate layer / an adhesive resin layer / a barrier layer / an adhesive layer / a sealant layer in order from the outside to the inside of the container body 200. be able to.

  The printing layer can be formed by a method such as gravure printing or offset printing using ink. An overcoat layer may be provided outside the printing layer for improving abrasion resistance or surface decoration.

  The thermoplastic resin layer can be formed on the paper base layer by extrusion lamination using a low-density polyethylene resin (LDPE), a linear low-density polyethylene resin (LLDPE), or the like. The thermoplastic resin layer may be subjected to an easy adhesion treatment such as a corona treatment to enhance the adhesion to the printing layer.

The paper base layer can be formed using a paperboard such as a milk carton base paper. The basis weight and density can be appropriately selected depending on the capacity and design of the container. For example, those having a basis weight of 200 g / m ^{2 to} 500 g / m ² and a density of 0.6 g / cm ^{3 to} 1.1 g / cm ³ can be suitably used.

  The adhesive resin layer is a layer formed using a polyolefin resin having a function of bonding the paper base layer and the barrier layer. Specifically, high density polyethylene resin (HDPE), medium density polyethylene resin (MDPE), LDPE, LLDPE, ethylene / methacrylic acid copolymer (EMAA), ethylene / acrylic acid copolymer (EAA), ionomer, polypropylene (PP) or the like can be used. In order to increase the adhesive strength, the surface of the paper base material layer or the barrier layer may be subjected to corona treatment, ozone treatment, anchor coating, or the like. The thickness is preferably from 10 μm to 60 μm. When the thickness is 10 μm or more, a sufficient adhesive strength can be obtained.

  The barrier layer can be formed by depositing a metal such as aluminum, silica, alumina or the like on the base film, or by dry laminating a metal foil such as aluminum on the base film. In any case, polyethylene terephthalate (PET) can be suitably used for the base film.

  When the barrier layer is formed by vapor deposition, the thickness of the vapor deposition layer can be 5 nm or more and 100 nm or less, and the thickness of the base film can be 6 μm or more and 25 μm or less. The vapor deposition layer may be laminated on either the front side or the back side of the sheet material.

When the barrier layer is formed by dry lamination of a metal foil, the thickness of the metal foil can be 5 μm or more and 15 μm or less.

The adhesive layer can be formed using an adhesive for dry lamination or an adhesive for non-solvent lamination. In addition, bonding may be performed by extrusion using a polyolefin resin. The coating amount is preferably 0.5 g / m ² or more and 7.0 g / m ² or less.

For the sealant layer, HDPE, MDPE, LDPE, LLDPE, or the like can be used. Further, there may be a layer partially containing polybutene. Among the above-mentioned materials, LLDPE is particularly preferable. In particular, those having a density of 0.925 g / cm ³ or less and an MI (melt index) of 4 or more are preferable. The thickness of the sealant layer is preferably 30 μm or more and 100 μm or less. The sealant layer can be formed by, for example, a T-die method or an inflation method.

  Further, the container body 200 may be a molded product using a resin, instead of using a sheet material.

(Pump dispenser)
The pump dispenser 300 is a member for pumping out the content liquid filled in the container body 200, and includes a pump unit 310, a fixing unit 320, a support member 330, and a suction tube 340.

  The pump section 310 is a member capable of sucking the content liquid through the suction tube 340 by being pushed vertically downward. The pump section 310 includes, for example, a pump head 311, a cylindrical piston 312 formed below the pump head 311, a cylindrical cylinder section 313 in which the piston 312 is slidably mounted in a vertical direction, and a pump head 311. And a tubular ejection nozzle 314 extending from the nozzle.

  When the pump section 310 pushes down the pump head 311, the piston 312 slides inward of the cylinder section 313. When the piston 312 slides inward of the cylinder portion 313, the content liquid is pumped into the cylinder portion 313 through a suction tube 340 described later by a pump mechanism (not shown) inside the cylinder portion 313. The pumped content liquid is pumped out of the pump unit 310 from the discharge nozzle 314 via the inner circumference of the piston 312. Note that the pump section 310 may be a so-called pump former configured to be able to mix and discharge the content liquid with air.

  The fixing part 320 is a member for fixing the pump part 300 to the container main body 200 so as to be rotatable around the axis of the cylinder 313. The fixing portion 320 is, for example, a cap that can be detachably attached to the spout 280 of the container body 200 by screwing, and can be formed on the outer periphery of the cylinder portion 313.

  The support member 330 is a substantially cylindrical member that extends downward from the lower end of the pump unit 310 and is disposed inside the container main body 200 when attached to the container main body 200 as shown in FIG. . The support member 330 has one or more cutouts 331 at the tip. As an example, as shown in FIG. 3, six notches 331 of the same shape are formed in the support member 330. In addition, as an example, the support member 330 can be attached by being fitted to a columnar projection projecting from below the cylinder 313 of the pump section 310 as shown in FIG.

  As shown in FIG. 2, when the lower surface 230 is horizontal, the center axis of the support member 330 is oriented vertically, and the length of the support member 330 is set at least when the pump unit 310 is vertically pushed down. At least a portion is formed to have a length in contact with the lower surface 230 of the container body 200. That is, the length of the support member 330 is such that the lower end portion abuts on the lower surface 230 as a result of the upper surface 210 of the container body 200 being deformed to a certain extent when the pump section 310 is pushed vertically downward. Alternatively, the length may be such that the lower end portion is in contact with the lower surface 230 before the pump portion 310 is pushed down vertically downward. By setting the length of the support member 330 to this length, the pressing force that pushes the pump unit 310 vertically downward when pumping out the content liquid can be received by the support member 330 abutting on the lower surface 230. Therefore, when the pump 310 is pushed vertically downward to pump out the liquid content, it is possible to prevent the container body 200 from buckling due to the pressing force.

  The suction tube 340 is a flexible tubular member for pumping the content liquid from outside the support member 330. As shown in FIGS. 1 and 2, the suction tube 340 is attached inside the support member 330 so that one end thereof communicates with the inside of the cylinder 313 of the pump section 310. Then, at least the other end of the suction tube 340 is brought out of the support member 330 via the cutout 331 of the support member 330 when the pump dispenser 300 is attached to the container body 200. Can be. The other end of the suction tube 340 can rotate around the axis of the support member 330 by rotating the pump section 310 around the axis of the cylinder 313, that is, around the axis of the support member 330. The outer diameter of the suction tube 340 is not particularly limited, but may be about 3.0 mm to 4.0 mm.

  As described above, since the other end of the suction tube 340 can be taken out of the support member 330, the pump section 310 also pumps up the content liquid at a position away from the portion where the support member 330 and the container body 200 are in contact with each other. Becomes possible. Therefore, according to the pump dispenser 300, it is possible to suppress the content liquid from remaining.

  Further, by rotating the pump unit 310, the other end of the suction tube 340 can be rotated around the axis of the support member 330. Therefore, by changing the position of the other end of the suction tube 340, the remaining of the content liquid can be further suppressed.

  Further, by forming the other end of the suction tube 340 to the outside through a notch 331 formed at the tip of the support member 330, the support member 330 can be connected to the lower surface 230 of the container body 200 by the suction tube. 340 can be hardly pinched. As a result, the suction tube 340 is crushed by the tip of the support member 330 and it becomes difficult to pump up the contents liquid. Also, when the pump head 311 is pushed down, the tip of the support member 330 does not contact the lower surface, and the The pump dispenser 300 can be prevented from tilting and the pump dispenser 300 from falling sideways.

  The size of the notch 331 is such that one of the height H along the axial direction of the support member 330 and the width W at the lower end of the support member 330 along the direction perpendicular to the axis of the support member 330 is equal to that of the suction tube 340. The outer diameter is preferably equal to or greater than the outer diameter, and the other is preferably equal to or greater than half the outer diameter of the suction tube 340, and more preferably equal to or greater than the outer diameter. By setting the height H and the width W in these ranges, the suction tube 340 can be passed through the notch 331, so that the support member 330 can reliably prevent the suction tube 340 from being pinched. Note that, as an example, the shape of the notch 331 is an isosceles triangle as shown in FIG. 3, but the shape is not limited to this and may be a size including an isosceles triangle having such a width and height. For example, the shape may be rectangular or circular.

  In addition, the maximum value of the length L along the circumferential direction of the support member 330 at the portion where the notch 331 is not formed at the tip of the support member 330 (the area indicated by hatching in the bottom view of FIG. 3). However, it is preferable that the width W and the number of the notches 311 are set so as to be three times or less, preferably two times or less, the outer diameter of the suction tube 340. By setting the length L within this range, the suction tube 340 can easily enter the notch 331, and the pinching by the support member 330 can be suitably suppressed.

  The packaging containers according to Examples 1 to 5 and Comparative Examples 1 to 3 were manufactured, and when the content liquid was pumped out using these, the presence or absence of the suction tube and the residual amount of the content liquid were evaluated. .

<Packaging container specifications>
(Container body)
In all of Examples 1 to 5 and Comparative Examples 1 to 3, the container body 200 was manufactured using the spout 280 having an inner diameter of 30 mm and the sheet material including the paper base material layer.

(Pump dispenser)
In the pump dispensers of the packaging containers according to Examples 1 to 5 and Comparative Examples 1 to 3, the shape of the tip of the support member having the outer diameter of 26 mm at the tip and the outer diameter of the suction tube are different. FIG. 4 shows the tip shapes of the support members according to the example and the comparative example.

  In the first embodiment, six notches are provided at the tip of the support member. The minimum value of the height H of the notch was 4 mm, and the minimum value of the width W was 4 mm. In addition, the maximum value of the length L of the portion where the notch was not formed at the tip of the support member was set to 12 mm. The outer diameter of the suction tube 340 was 4 mm.

  In the second embodiment, eight notches are provided at the tip of the support member. The minimum value of the height H of the notch was 2 mm, and the minimum value of the width W was 4 mm. Further, the maximum value of the length L of the portion where the notch is not formed at the tip of the support member was set to 4 mm. The outer diameter of the suction tube 340 was 4 mm.

  In the third embodiment, eight notches are provided at the tip of the support member. The minimum value of the height H of the notch was 4 mm, and the minimum value of the width W was 2 mm. Further, the maximum value of the length L of the portion where the notch is not formed at the tip of the support member was set to 4 mm. The outer diameter of the suction tube 340 was 4 mm.

  In the fourth embodiment, six notches are provided at the tip of the support member. The minimum value of the height H of the notch was 4 mm, and the minimum value of the width W was 4 mm. The maximum value of the length L of the portion where the notch was not formed at the tip of the support member was set to 10 mm. The outer diameter of the suction tube 340 was 4 mm.

  In Example 5, three notches were provided at the tip of the support member. The minimum value of the height H of the notch was 12 mm, and the minimum value of the width W was 12 mm. The maximum value of the length L of the portion where the notch was not formed at the tip of the support member was set to 2 mm. The outer diameter of the suction tube 340 was 3.5 mm.

  In Comparative Examples 1 and 2, 26 notches were provided at the tip of the support member. The minimum value of the height H of the notch was 0.5 mm, and the minimum value of the width W was 0.5 mm. In addition, the maximum value of the length L of the portion where the notch is not formed at the tip of the support member was set to 0.5 mm. In Comparative Example 1, the outer diameter of the suction tube 340 was 4 mm. Comparative Example 2 has a structure in which the content liquid is directly pumped up by the support member 330 without providing the suction tube 340.

  In Comparative Example 3, one notch was provided at the tip of the support member. The minimum value of the height H of the notch was 5 mm, and the minimum value of the width W was 4 mm. The maximum value of the length L of the portion where the notch is not formed at the tip of the support member was set to 76 mm. The outer diameter of the suction tube 340 was 4 mm.

<Evaluation>
When filling the container body of the packaging containers according to Examples 1 to 5 and Comparative Examples 1 to 3 with a hand soap, and trying to pump out the content liquid a plurality of times, whether or not the suction tube is pinched, and the content liquid remains. The amount was evaluated.

  Table 1 summarizes the outer diameter of the suction tube used for the pump dispenser according to the examples and comparative examples used for the evaluation and the evaluation results. The evaluation results in Table 1 show the presence or absence of pinching, the remaining amount of the content liquid, and the overall evaluation.

  In Table 1, as for "entrapment", "++" indicates that entrapment did not occur, and "+" indicates that entrapment was resolved by rotating the pump dispenser even if entrapment occurred. Is indicated by "-" when the occurrence of the occurrence and not being solved by rotating the pump dispenser.

  In addition, as for the comprehensive evaluation, the case where the remaining amount is less than 20 milliliters (ml) and no entrapment occurs is indicated by "++", and the case where the remaining amount is less than 20 milliliters and entrapment can be eliminated is shown. "+" Indicates that the remaining amount is 20 ml or more, or "-" indicates that entrapment cannot be eliminated.

  As shown in Table 1, in the packaging containers according to Examples 1 to 5, the length L where the notch is not formed is three times or less the outer diameter of the suction tube, and the height H of the notch and One of the widths W is equal to or larger than the outer diameter of the suction tube, and the other is equal to or larger than half the outer diameter of the suction tube. For this reason, a suction tube can be passed through the cut. For this reason, entrapment was suppressed, or even if entrapment occurred, entrapment could be eliminated by rotating the pump dispenser. For this reason, in the packaging containers according to Examples 1 to 5, the residual amount could be suppressed to 10 ml.

  Further, in the packaging container according to Comparative Example 1, since both the height H and the width W of the notch are smaller than the outer diameter, the suction tube cannot pass through the notch, so that the notch occurs, and the pump dispenser is rotated. Could not be resolved. For this reason, in the packaging container according to Comparative Example 1, the content liquid could not be pumped.

  Further, in the packaging container according to Comparative Example 3, since the length L of the portion where the notch is not formed is larger than three times the outer diameter of the suction tube, pinching occurs in the portion where the notch is not formed, The problem could not be solved by rotating the pump dispenser. For this reason, in the packaging container according to Comparative Example 3, the content liquid could not be pumped.

  The packaging container according to Comparative Example 2 did not include a suction tube and thus did not pinch. However, the content liquid at a position distant from the support member could not be pumped up, and the residual amount was 20 ml.

  From the above evaluation results, by providing a notch of a predetermined shape at the tip of the pump dispenser and exposing the other end of the suction tube to the outside through the notch, the buckling of the container body is suppressed, and the content liquid is contained in the container body. It could be confirmed that the residue could be suppressed.

  INDUSTRIAL APPLICATION This invention can be used suitably for the packaging container containing a container main body and the pump dispenser which can pump out a liquid content by pushing down.

REFERENCE SIGNS LIST 100 packaging container 200 container main body 210 upper surface 211 opening 220 side surface 221 first side surface 222 second side surface 230 lower surface 240 side seal portion 250 bent piece 300 pump dispenser 310 pump portion 311 pump head 312 piston 313 cylinder 314 ejection nozzle 320 fixed Part 330 support part 331 notch 340 suction tube

Claims (3)

A container body,
The container body is provided with a pump unit that is inserted into and attached to a through-hole formed in an upper part of the container body, and that can pump out a content liquid contained in the container body by pushing down vertically downward. A packaging container including a pump dispenser,
The pump dispenser is
A substantially cylindrical support member extending from the lower edge of the pump portion, disposed inside the container body in a state attached to the container body, and provided with one or more cutouts at a tip thereof;
Inside the support member, one end communicates with the inside of the pump section, and at least the other end is attached to the container body, and at least the other end can be drawn out of the support member through the cutout. With
When the support member is pressed down at least the pump portion vertically downward, the lower end surface of the tip abuts on the lower surface of the container body,
The other end of the suction tube rotates around the axis of the support member by rotating the pump section around the axis of the support member,
Packaging containers. The notch has a height along the axial direction of the support member, and the width at the lower end of the support member along a direction perpendicular to the axis of the support member is equal to or greater than the outer diameter of the suction tube. And the other is half or more of the outer diameter of the suction tube,
The packaging container according to claim 1. The maximum length of the portion where the notch is not formed at the tip of the support member along the circumferential direction of the axis of the support member is three times or less the outer diameter of the suction tube.
The packaging container according to claim 1.

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