JP2019209982A - Paper container having mouth plug - Google Patents

Abstract

To provide a paper container having a mouth plug capable of suppressing pulsation of a liquid material flowing through the mouth plug during spouting of the liquid material while keeping the inclination angle of a top part small, and providing smooth spouting of the liquid material.SOLUTION: A paper container comprises: a container body 9 structured with a square cylindrical shank 6 formed of a front panel 2, a right side face panel 3, a rear face panel 4, and a left side face panel 5, a bottom part 7 closing a lower opening of the shank 6 and a flat square top part 8 closing an upper opening of the shank 6; and a mouth plug 10 set at the top part 8. The top part 8 is a sloped surface lower at the front panel 2 side and higher at the rear face panel 4 side. The mouth plug 10 is provided at a position close to a first top corner part 11 (A) formed by a top side 2a of the front panel 2 and a top side 3a (5a) of any one of the right and left side face panels 3 (5) within four top corner parts of the top part 8.SELECTED DRAWING: Figure 2

Description

  TECHNICAL FIELD The present invention relates to a paper container with a stopper having a flat top type top portion that contains a liquid product such as milk or juice, a liquid detergent, a viscous product such as jelly or cream, or a liquid product obtained by mixing solid materials such as fruit pieces. .

  Conventionally, as a container for storing liquid drinks such as milk and juice, liquid detergents, viscous substances such as jelly and cream, and solid foods such as fruit pieces, a rectangular cylinder that opens up and down A mouthpiece comprising a container body comprising a body, a flat top for sealing the upper opening of the tubular body, and a bottom for sealing the lower opening of the tubular body, and a mouthpiece provided on the top Paper containers are widely used.

  Such a container with a stopper having a so-called flat top type top having a flat upper surface has been improved in various ways in recent years. For example, it is easy to pour a liquid material from a stopper. As shown in FIG. 7, it is a quadrangular prism shape composed of a body portion 71 composed of four side panels, a bottom portion 72 and an inclined flat top portion 73, and the top portion 73 is a pair of horizontal and parallel different heights. There is known a paper container 70 with a stopper, which is a quadrangle composed of a side 74, 75 and a pair of inclined parallel sides 76, 77, with a stopper 78 attached to the top 73 (see, for example, Patent Document 1). ).

JP-A-2005-35580

  According to the plug-equipped paper container 70 shown in FIG. 7, the spigot 78 is formed on the rectangular top 73 having a pair of horizontal sides 74 and 75 having different heights and a pair of inclined parallel sides 76 and 77. Therefore, in the state where the paper container 70 with a stopper is erected, the air reservoir 79 is formed in the inclined top portion 73 by the inclined space (see FIG. 8). From this state, when the paper container 70 with a stopper is inclined so that the lower side 74 of the inclined top portion 73 faces downward (see FIG. 9), the liquid substance is poured out. An air reservoir 79 is applied to the upper part of the opening of the plug 78 on the inner surface of the plug 80, and the opening of the plug 78 is not blocked by the liquid material, and the liquid body is poured into the container body 80 from the upper part of the opening of the plug 78. The air enters without stagnation and directly escapes to the air reservoir 79, and the pulsation of the liquid material flowing through the plug 78 is suppressed to be small, and the liquid material can be easily poured out.

Such an effect is obtained in the air reservoir 79 because the facing distance between the liquid level F of the liquid material and the inner surface of the top 73 is large. When the distance between the facing surfaces is short, the inclination angle of the stoppered paper container 70 from which the liquid substance can be extracted in the state where the air reservoir 79 is applied to the opening of the stopper 78 becomes small. Then, the liquid material can be poured out little by little, and the liquid material cannot be quickly poured out. In addition, since the range of the inclination angle of the stoppered paper container 70 from which the liquid substance can be poured out with the air reservoir 79 applied to the opening of the stopper 78 becomes narrow, the inclination angle of the stoppered paper container 70 is also reduced. If the tilt angle is increased by mistake, the opening of the plug 78 is blocked by the liquid material, and the liquid material is pulsated, so that the liquid material can be easily and smoothly poured out. It becomes difficult. For this reason, the inclination angle of the top 73 is such that even if the stoppered paper container 70 is inclined greatly, an air pool 79 is applied to the opening of the stopper 78 so that the liquid substance can be extracted easily and quickly. It is desirable that the facing distance between the liquid surface F and the inner surface of the top portion 73 be an angle at which a sufficiently large air reservoir 79 can be formed.
However, if the inclination of the top portion 73 is increased, the height of the paper container 70 with a stopper increases by the amount of the inclination. Therefore, an extra space is required for storing or transporting the paper container 70 with a stopper. There arises a problem that the material is lost or an extra material is required.

  The inventors of the present invention have made the present invention as a result of repeated research and studies to solve such problems.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a plug capable of easily, quickly and smoothly pouring out a liquid material while suppressing the pulsation of the liquid material flowing through the plug during liquid material pouring while reducing the inclination angle of the top. It is to provide a paper container.

  In order to achieve the above object, the invention described in claim 1 includes a rectangular tubular body comprising a front panel, a right side panel, a back panel, and a left side panel, and a bottom part for sealing a lower opening of the body. And a container body composed of a flat rectangular top that seals the upper opening of the trunk, and a spigot provided on the top, the top being an inclined surface having a low front panel and a high back panel And the plug is close to a first top corner formed by the top side of the front panel and the top side of one of the left and right side panels among the four top corners of the top. It is characterized by being provided in the position.

  According to the first aspect of the present invention, the top portion is an inclined surface having a low front panel side and a high back panel side, and the plug is formed of a front panel of four top corner portions of the top portion. Since it is provided at a position close to the first top corner formed by the top side and the top side of either one of the left and right side panels, the first top corner is placed on the lower side when the liquid is poured out. When tilted toward the top, a corner formed by the top side of the rear panel and the top side of the side panel on the diagonal line of the first top corner (hereinafter referred to as the second top corner) is the upper side. The top of the air reservoir formed at the top of the container body when tilted becomes the second top corner.

  Thus, when the first apex corner is tilted in the downward direction, the facing distance between the liquid surface and the apex inner surface is such that the apex has the same tilt angle as shown in FIG. It is larger than the paper container with a stopper. As a result, when the liquid material is poured out, even if the paper container with a stopper is inclined more than a conventional paper container with a stopper, the communication state between the upper part of the opening of the stopper and the air pocket can be maintained. In addition, since the liquid material can be poured out while suppressing the pulsation of the liquid material, the liquid material W can be easily and quickly poured out smoothly.

  According to a second aspect of the present invention, in the first aspect, the trunk portion includes four trunk corner portions formed between the front panel, the right side panel, the rear panel, and the left side panel. In the first body corner between the front panel and the left or right side panel forming the first top corner provided with the plug, the first top corner or the first 1 Starting from a position slightly away from the top corner, branching from the starting point to either the front panel or the left and right side panels and extending toward the bottom, the bottom of the front panel and the left and right A first recess surrounded by two recess-forming folding line portions that are connected at a position until reaching the first bottom corner formed by the bottom of one of the side panels is formed. It is characterized by that.

  According to the second aspect of the present invention, the first top corner is formed on the first body corner between the front panel and the left or right side panel forming the first top corner. Starting from a position slightly away from the corner or the first top corner, branching from the starting point to either the front panel or the left or right side panel and extending toward the bottom, the front panel 1 and surrounded by the two recess-forming fold lines that are connected at a position between the bottom and the bottom of either one of the left and right side panels to reach the first bottom corner. Since the concave portion is formed, when the first body corner portion is viewed from the inner surface side, the first body corner portion forms a gentle rise by the first recess portion.

  Due to this rise, the tip portion of the first recess on the side of the first top corner becomes an inclined surface toward the plug direction, and this inclined surface increases the flow rate of the liquid material when the liquid material is poured out. Combined with suppressing the pulsation of the liquid material flowing through the plug during the material extraction, the liquid material can be smoothly poured out, and the residual liquid is reduced by increasing the flow rate of the liquid material. In particular, the solid residue in the case of a liquid containing a solid can be reduced.

  In addition, a smooth surface is formed at the corner of the first body portion due to the rise of the corner portion of the first body portion formed by the first recess, and the smooth surface and the two recessed portion forming folding line portions are sandwiched. However, since the angle between the front panel and the side panel is increased, the resistance to the flow of the liquid material in contact with the first body corner is smaller than that of the body corner having a substantially right angle, and the flow rate of the liquid is reduced. In addition to speeding up, it is possible to effectively prevent the solid matter from being caught in the first body corner portion even when the solid matter is contained in the liquid matter.

  As described above, according to the paper container with a stopper according to the present invention, the pulsation of the liquid material flowing through the stopper at the time of discharging the liquid material is suppressed while the inclination angle of the top portion is reduced, and the liquid material is smoothly smoothed. Can be obtained. In addition, since the angle of inclination of the top can be reduced, compared to conventional paper containers with stoppers, the height can be lowered, so that it does not take up extra space at the time of storage, etc. Material can be saved.

It is a right view which shows an example of embodiment of the paper container with a stopper concerning this invention. It is the perspective view which looked at the paper container with a stopper shown in FIG. 1 from upper direction. It is the perspective view which looked at the paper container with a stopper shown in FIG. 1 in the trunk | drum diagonal direction. It is a schematic longitudinal cross-sectional explanatory drawing of FIG. It is explanatory drawing which shows the state which inclined the container main body when pouring a liquid substance. It is a top view which shows the blank sheet | seat which shape | molds the container main body of the container with a stopper shown in FIG. It is the perspective view which looked at the conventional paper container with a stopper from the upper part. It is a schematic longitudinal cross-sectional explanatory drawing of FIG. It is explanatory drawing which shows the state which inclined the container main body when pouring a liquid substance.

Hereinafter, an example of an embodiment of a paper container with a stopper according to the present invention will be described in detail with reference to the drawings.
1 to 6 show an example of an embodiment of a paper container with a stopper according to the present invention, FIG. 1 is a right side view of the paper container with a stopper according to the present example, and FIG. The perspective view which looked at the paper container with a stopper from the upper part, FIG. 3 is the perspective view which looked at the paper container with a stopper shown in FIG. 1 in the trunk | drum diagonal direction, FIG. 4 is schematic longitudinal cross-section explanatory drawing of FIG. FIG. 6 is an explanatory view showing the shape of a liquid pool when the container body is tilted when liquid material is poured out, and FIG. 6 is a plan view showing a blank sheet for forming the container body of the container with a cap shown in FIG. .

  The paper container 1 with a stopper of this example is a bottom part that seals a rectangular tubular body 6 including a front panel 2, a right side panel 3, a back panel 4, and a left side panel 5, and a lower opening of the body 6. 7 and a container body 9 composed of a flat rectangular top 8 that seals the upper opening of the body 6 and a stopper 10 provided on the top 8. In this example, the container body 9 is These are formed by a single blank sheet described later.

As shown in FIG. 2, the top 8 is an inclined surface that is low on the front panel 2 side and high on the back panel 4 side. The inclination angle θ of the top 8 is preferably 10 ° or more and 30 ° or less. When the angle is 10 ° or more, the pulsation of the liquid material flowing through the plug 10 can be effectively suppressed when the container body 9 is tilted when the liquid material is poured out as described later. It is possible to form an air pocket with good air escape. When it is 30 ° or less, even when the liquid is a beverage, it can be easily drunk without the nose hitting the top surface even if the mouthpiece is directly put on the mouthpiece.
Further, the upper limit value of the inclination angle θ of the top portion 8 is the height of the upper surface upper end of the stopper 10 and the upper end of the top portion 8 that are inclined along the inclination of the top portion 8, that is, the height of the top side 4 a of the back panel 4. Are preferably at the same angle.
Even if the inclination angle θ of the top portion 8 is a large angle at which the upper end of the top portion 8, that is, the top side 4 a of the back panel 4 is higher than the upper end of the upper surface of the plug 10, There is no change in the effect of suppressing the pulsation of the object, and if it is set to such a large angle, the paper container 1 with a spout becomes taller and more material is applied.

The spigot 10 provided on the top 8 is one of the top sides 3 a and 5 a of the top side 2 a of the front panel 2, the right side panel 3, and the left side panel 5 among the four top corners 11 of the top 8. Are provided at positions close to the first apex corner 11 (A) formed by. In this example, the first apex corner 11 (A) is formed by the apex side 2 a of the front panel 2 and the apex side 3 a of the right side panel 3.
The close position referred to here is a position close to the first top corner 11 (A) side from the center position of the top 8, and the closer to the first top corner 11 (A) is preferable. .

  Further, in this example, the body portion 6 is provided with a plug 10 among the four body corner portions 12 formed between the front panel 2, the right side panel 3, the back panel 4, and the left side panel 5. The first top corner 11 (A) is the starting point S in the first body corner 12 (A) between the front panel 2 and the right side panel 3 that forms the first top corner 11 (A), Branching from the starting point S to the front panel 2 and the right side panel 3 and extending toward the bottom 7, the bottom side 2 b of the front panel 2 and the bottom side of the right side panel 3 among the four bottom corners 13 in the bottom 7. A recess 16 surrounded by two recess-forming folding line portions 14 and 15 that are connected at a position until reaching the first bottom corner portion 13 (A) formed by 3b and having an end point E is formed. .

  In the present example, the two fold line portions 14 and 15 for forming the concave portion 16 have the starting point S as the first top corner portion 11 (A), but slightly from the first top corner portion 11 (A). You may set the position away from as the starting point S. When the starting point S is set at a position slightly separated from the first top corner 11 (A), the starting point S is preferably set at a position within 35 mm from the first top corner 11 (A).

  In the paper container 1 with a stopper configured as described above, the top 8 has an inclined surface that is low on the front panel 2 side and high on the back panel 4 side, and the plug 10 has four top corners 11 in the top 8. The liquid material W is poured out at a position close to the first top corner 11 (A) formed by the top side 2 a of the front panel 2 and the top side 3 a of the right side panel 3. At this time, when the first top corner 11 (A) is tilted downward, the top 4 a of the back panel 4 and the top of the left side panel 5 on the diagonal line of the first top corner 11 (A) are inclined. The second apex corner 11 (B) formed by the side 5a is on the upper side, and the apex of the air reservoir 17 formed on the apex 8 of the container body 9 when tilted is the second apex corner 11 (B). (See FIG. 5).

  Thus, when the first top corner 11 (A) is tilted downward, the facing distance between the liquid level F of the liquid W and the inner surface of the top 8 has the same tilt angle as the top 73. It becomes larger than the conventional paper container 70 with a stopper shown in FIG. As a result, when the liquid material W is poured out, even if the stoppered paper container 1 is tilted more than the conventional stoppered paper container 70, the communication between the upper portion of the opening of the stopper 10 and the air reservoir 17 is maintained. Since the liquid material W can be poured out while suppressing the pulsation of the liquid material W, the liquid material W can be poured out easily, quickly and smoothly.

  Further, in this example, the first body corner portion 12 (A) in the body portion 6 of the container body 9 is slightly separated from the first top corner portion 11 (A) or the first top corner portion 11 (A). The position is set as a starting point S, branches from the starting point S to the front panel 2 and the right side panel 3, extends toward the bottom 7, and is connected at a position from the first bottom corner 13 (A). Since the recessed portion 16 surrounded by the two recessed portion forming folding line portions 14 and 15 as the end point E is formed, when the first body corner 12 (A) is viewed from the inner surface side, the recessed portion 16 A gentle rise 18 is formed at one body corner 12 (A), and the tip of the recess 16 on the first top corner 11 (A) side becomes an inclined surface 19 toward the plug 10 (FIG. 4). reference.).

  Thereby, when pouring out the liquid substance accommodated in the inside, the container body is tilted so that the first top corner 11 (A) and the first trunk corner 12 (A) are downward. Thus, the first body corner 12 (A) is shaped like a bowl to guide the liquid in the container body 9 toward the stopper 10, and the liquid can be smoothly poured out.

  In the first body corner 12 (A) having a bowl shape, the tip portion on the first top corner 12 (A) side where the bulge 18 is formed by the recess 16 is inclined toward the plug 10 direction. Since the liquid material W that flows in the container body 9 toward the cap 10 is formed on the surface 19, the flow rate of the liquid material W is increased by the inclined surface 19, and the plug 10 is removed when the liquid material W is poured out. Combined with suppressing the pulsation of the flowing liquid material W, the liquid material W can be smoothly poured out.

  Further, a smooth surface 20 is formed on the first body corner 12 (A) by the bulge 18 of the first body corner 12 (A) formed by the recess 16, and the smooth surface 20 and the two recesses are formed. Since the angle between the front panel 2 and the right side panel 5 sandwiching the forming folding line portions 14 and 15 is increased, the resistance to the flow of the liquid material in contact with the first body corner portion 12 (A) Even when the liquid material W contains a solid material, the solid material is smaller than the corner portion of the paper container that has a substantially right angle, thereby increasing the flow rate of the liquid material W. ), And even when the liquid W is a viscous material, it can be effectively prevented from sticking to the inner surface of the body 6.

FIG. 6 shows an example of a blank sheet 30 for forming the stoppered paper container 1 of this example.
The blank sheet 30 of this example is made of a paper container material in which a sealant layer is laminated on at least the back side of the paperboard base material, and the front panel 2 in which the body part 6 is formed via the body part vertical folding lines 31, 32, 33. The right side panel 3, the back panel 4, and the left side panel 5 are connected.

  A pair of top surface panels 36 and 37, which form the top portion 8 through the top horizontal folding lines 34 and 35, are connected to the upper ends of the front panel 2 and the rear panel 4, and the right side panel 3 and the left side are connected to each other. A pair of folding surface panels 40 and 41 which form the top portion 8 via the top horizontal folding lines 38 and 39 are connected to the upper end of the surface panel 5. Top folding lines 42 and 43 are given to the folding panels 40 and 41. Further, sealing panels 48, 49, 50, 51 are connected to upper ends of the top surface panels 36, 37 and the folding surface panels 40, 41 via sealing portion horizontal folding lines 44, 45, 46, 47, respectively. .

  A pair of bottom panels 54 and 55 facing each other are connected to the lower ends of the front panel 2 and the rear panel 4 through the bottom horizontal folding lines 52 and 53 to connect the right panel 3 and the left panel. A pair of inner surface panels 58 and 59 which form the bottom 7 via the bottom horizontal folding lines 56 and 57 are connected to the lower end of the panel 5 so as to face each other.

  Further, a side seal panel 61 sealed to the other open end edge of the blank sheet 30 is connected to the open end edge of the blank sheet 30 via a side seal vertical folding line 60.

  In the top panel 36 connected to the upper end of the front panel 2 of the blank sheet 30 thus configured, the top horizontal fold line 34 of the front panel 2 that becomes the first top corner 11 (A), A plug attachment opening 64 is formed at a position close to the intersection 63 with the top vertical fold line 62 between the top panel 36 and the folded panel 40. In addition, when the blank sheet 30 is formed by laminating an aluminum sheet between the paperboard material and the sealant layer, the paperboard material part of the blanks sheet 30 is cut to leave the aluminum sheet part. May be formed.

  In addition, the trunk vertical folding line 31 between the front panel 2 and the side panel 3 connected to the intersection 63 where the first trunk corner 12 (A) is formed is the intersection 63 or a position slightly separated from the intersection 63. From the starting point S to the front panel 2 and the right side panel 3, extending toward the bottom horizontal fold line 52 of the front panel 2 and the bottom horizontal fold line 56 of the right side panel 3, Two concave line forming folding line portions 14 that form the first concave portion 16 that is connected at a position between the bottom horizontal folding line 52 and the bottom horizontal folding line 56 of the right side panel 3 and reaches the intersection 65, 15.

In this example, at the starting point S of the two recessed line forming folding line portions 14 and 15 where the recessed part 16 is formed, the top horizontal folding line 34, the top panel 36 and the folded panel 40 of the front panel 2 are formed. The starting point S is the intersection point 63 with the top vertical folding line 62 between them, but the starting point S may be a position slightly away from the intersection point 63.
In addition, at the end point E of the two recessed line forming folding line portions 14 and 15, the end point E is an intersection point 65 between the bottom horizontal fold line 52 of the front panel 2 and the bottom horizontal fold line 56 of the right side panel 3. It may be a position between the bottom horizontal fold line 52 of the front panel 2 and the intersection 65 between the bottom horizontal fold line 56 of the right side panel 3.

DESCRIPTION OF SYMBOLS 1 Paper container with stopper 2 Front panel 2a Top side 2b Bottom side 3 Right side panel 3a Top side 3b Bottom side 4 Back panel 4a Top side 5 Left side panel 5a Top side 6 Body part 7 Bottom part 8 Top part 9 Container body 10 Plug 11 Top corner 11 (A) First top corner 11 (B) Second top corner 12 Body corner 12 (A) First body corner 13 Bottom corner 13 (A) First bottom corner 14 , 15 Concave line forming part 16 Concave part 17 Air reservoir 18 Swelling 19 Inclined surface 20 Smooth surface 30 Blanks sheet 31, 32, 33 Body vertical fold line 34, 35 Top horizontal fold line 36, 37 Top panel 38, 39 Top horizontal fold line 40, 41 Folding panel 42, 43 Top oblique line 44, 45, 46, 47 Sealing part horizontal folding line 48, 49, 50, 51 Sealing panel 52, 53 Bottom lateral folding line 54, 55 Bottom panel 56, 57 Bottom part horizontal Polyline 58, 59 Face panel 60 Side seal vertical fold line 61 Side seal panel 62 Top vertical fold line 63 Intersection 64 Port attachment opening 65 Intersection 70 Port paper container 71 Body 72 Bottom 73 Top 74, 75 Horizontal sides 76, 77 Inclined Side 78 Mouth plug 79 Air reservoir 80 Container body S Start point E End point W Liquid substance F Liquid surface

Claims (2)

  Consists of a square cylindrical body consisting of a front panel, right side panel, back panel, and left side panel, a bottom that seals the lower opening of the body, and a flat rectangular top that seals the upper opening of the body The top of the container has a slanted surface on the front panel side and a high back panel side, and the plug has four top corners at the top. A paper container with a stopper is provided at a position close to a first top corner formed by the top side of the front panel and the top side of one of the left and right side panels. The body portion forms a first top corner portion provided with the plug among four corner portions formed between the front panel, the right side panel, the back panel, and the left side panel. The first body corner between the front panel and the left or right side panel is a starting point at a position slightly away from the first top corner or the first top corner. Branching from the front panel to either the left or right side panel and extending toward the bottom, and formed by a lower side of the front panel and a bottom side of the left or right side panel. 2. The plugged paper according to claim 1, wherein a first recessed portion surrounded by two folding line portions for forming a recessed portion, which is connected at a position until reaching the bottom corner portion, is formed. container.

Images