TW202000538A - Paper container with stopper - Google Patents

Abstract

The present invention is a paper container with a stopper that allows a liquid substance to be smoothly extracted from a container body while reducing the amount of the liquid substance left in the container body. The paper container comprises: a container body 9 configured with a square columnar body section 6, a bottom section 7, and a flat top section 8; and a stopper 10 disposed on the top section 8. The stopper 10 is disposed at a position close to a first top corner part 11(A) of the top section 8. The body section 6 has, at a first body corner part 12(A), a first recessed part 16 formed by being enclosed by two recess-forming crease parts 14, 15 which extend toward the bottom section 7 while diverging from a start point S and converging at an end point E located at some position before reaching a first bottom corner part 13(A), said start point S being the first top corner part 11(A) or a position slightly separated from the first top corner part 11(A).

Description

Paper container with mouth stopper

The present invention relates to so-called liquid beverages containing liquids such as milk milk, fruit juices, liquids such as liquid lotions, viscous materials such as liquid lotions, gums, creams, and solid foods such as mixed fruit pieces. A paper container with a flap with a flat-topped top for liquids.

In the past, it has been used as liquids such as liquids containing milk drinks, juices and other liquids, liquid lotions and other liquids, viscous materials such as gels and creams, and liquid foods such as solid foods such as mixed fruit pieces. For the container, a container body formed of a cylindrical main body portion that seals the upper and lower openings and a flat top portion that opens above the cylindrical main body portion and a bottom portion that seals the bottom opening of the cylindrical main body portion, And a paper container with a mouth plug formed by the mouth plug provided on the top.

This type of container with a flat top, a so-called flat top, and a mouth plug has undergone various improvements in recent years, for example, by installing a spiral injection spout formed by the mouth plug body and the lid on the connection The imaginary straight line of the front end of the mouth plug body and the shortest side closest to the flat upper surface and the upper surface have an elevation angle greater than the vicinity of the injection angle of the mouth plug body in which the liquid paper container is tilted and the liquid is injected, A liquid paper container that prevents the occurrence of liquid exposure and the like when the liquid material is injected when the liquid material contacts the front end portion of the upper surface (for example, refer to Patent Document 1).

In addition, for those who easily inject liquid from the mouth plug, as shown in FIG. 20, a body portion 71 formed of four side panels and a flat top portion 73 inclined to the bottom portion 72 are known. 73 is an inclined surface formed by a quadrilateral formed by a pair of parallel parallel sides 74, 75 with different heights and a pair of inclined parallel sides 76, 77. A paper container 70 with a plug (for example, refer to Patent Document 2). [Prior Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Application Publication No. 2007-076674 [Patent Document 2] Japanese Patent Laid-Open No. 2005-35580

[Problems to be solved by the invention]

As exemplified in the paper container for liquid described in Patent Document 1, according to a paper container with a flat top having a flat top on the upper portion of the cylindrical body of the quadrangular tube, the liquid material contained therein is poured out Generally, the container body is tilted from the mouth plug to inject liquid. At this time, since the flow rate of the liquid material flowing toward the spigot in the container body is a quadrangular tube, the liquid material at the corner of the body at a substantially right angle with respect to the lower side inclined to the contact The resistance of the flow is large, so the velocity of the upper part of the liquid is fast, while the velocity of the lower part becomes slow.

Therefore, the injection of the liquid substance is not smooth, and when the liquid substance contains solids with a large specific gravity, for example, in the case of granular corn chowder or granular citrus juice, the solids sink to the bottom However, staying in the corner of the main body makes it difficult to dispense, and there is a problem of remaining in the container body. In addition, when the liquid substance is a viscous substance such as a jelly substance or a cream, the viscous substance is adsorbed on the inner surface of the main body, and it becomes difficult to inject it, and there is a problem that it remains in the container body.

In addition, according to the paper container 70 with a flap described in Patent Document 2 shown in FIG. 20, the parallel sides 74 and 75 at a pair of horizontal and different heights and a pair of inclined parallel sides Since the top 73 of the quadrangular inclined surface formed by 76 and 77 is equipped with the mouth plug 78, when the paper container 70 with the mouth plug is standing, air stagnation 79 due to the inclined space is generated on the inclined top 73 (refer to FIG. twenty one.). In this state, if the paper container 70 with a flap is tilted so that the lower side 74 of the sloping top 73 is inclined toward the lower side, the liquid substance is poured out (see FIG. 22 ), inside the container body 80 The air retention 79 reaches the upper part of the opening of the mouth plug 78. The opening of the mouth plug 78 will not be closed by the liquid. As the liquid is injected, the air will not stagnantly enter the upper part of the opening of the mouth plug 78. Relying on the container body 80 and directly running to the air stagnation 79, the pulsation of the liquid substance flowing through the port plug 78 is reduced, and the liquid substance is easily discharged.

Such an effect is obtained by entrapment in the air 79, and the liquid surface F of the liquid material and the surface of the inner surface of the top portion 73 are relatively open. If the distance between the surfaces is relatively short, and the air stagnation 79 comes to the opening of the mouthpiece 78, the inclination angle of the paper container 70 with mouthpiece that can draw out the liquid substance becomes smaller. In this way, the liquid can only be injected little by little, rather than quickly. In addition, when the air stagnation 79 comes to the opening of the mouth plug 78, the range of the inclination angle of the paper container with a mouth plug 70 that can inject liquid is narrowed, so the inclination of the paper container 70 with a mouth plug The adjustment of the angle is not easy, and if the inclination angle is increased by mistake, the liquid material plugs the opening of the mouth plug 78 to cause the liquid material to jump, so it is difficult to inject the liquid material easily and smoothly. Therefore, even if the paper container 70 with a flap is greatly inclined, the air retention 79 comes to the opening of the flap 78, and the liquid can be easily and quickly drawn out. The liquid surface F of the object is at an angle with respect to the surface of the inner surface of the top portion 73 with air stagnation 79 sufficiently spaced apart. On the contrary, if the inclination of the top 73 is increased, the height of the paper container 70 with a flap becomes higher only by the amount of inclination. Therefore, the paper container 70 with a flap is occupied during storage, transportation, etc. The extra places will lead to the problem that the so-called materials must be increased.

The inventors of the present invention have completed the present invention through the results of repeated experiments to solve such problems.

An object of the present invention is to provide a paper container with a mouth stopper capable of smoothly discharging liquid substances from the container body and reducing the residual liquid substances in the container body. [Means for solving problems]

In order to achieve the above-mentioned object, the invention described in claim 1 is characterized by being formed of a container body and a flap, the container body being a quadrangular cylindrical body formed by a front panel, a right panel, a back panel, and a left panel The bottom of the sealed main body part; and the flat top of the sealed upper body part, the mouth plug is provided on the top part, the mouth plug is provided on the four top corners close to the top part The position of the first top corner formed by the top edge of the front panel and the top edge of either of the left and right side panels, the main body is between the front panel, the right panel, the back panel, and the left panel Within the formed four main body corners, the first main body corner between the front panel provided with the first top corner of the mouth plug and the left and right side panels is formed, with the first top corner or A position slightly away from the first top corner is used as a starting point. From this starting point, the front panel and the left and right side panels diverge and extend toward the bottom. When the bottom edge of the front panel and the front The positional connection between the first bottom corners formed by the bottom edges of either the left and right side panels serves as an end point, and a first concave portion surrounded by two concave portion forming fold lines is formed.

According to the invention recited in claim 1, the mouth plug is provided in the first top portion formed by the top edge of the front panel and the top edge of any one of the left and right side panels in the four top corners near the top portion The position of the corner, therefore, when pouring the liquid contained in the inside, by inclining the container body such that the first top corner close to the mouth stopper is downward, the first The first main body corner between the front panel at the top corner and the left and right side panels has a groove shape, and the liquid in the container body can be induced in the direction of the mouth stopper. In addition, when the content is a viscous substance, the viscous substance adsorbed on the inner surface of the main body portion is peeled off from the inner surface of the main body portion and can be concentrated on the groove-shaped first main body corner portion. By this, the liquid substance can be smoothly injected, and the residual of the liquid substance can be reduced.

In addition, the first main body corner between the front panel forming the first top corner and the left and right side panels is separated from the first top corner or slightly away from the first top corner As a starting point, from which the front panel diverges from the left and right side panels and extends toward the bottom, and when it comes to the bottom edge of the front panel and the left and right side panels The positional connection between the formed first bottom corners serves as the end point, and the first concave portion surrounded by the two concave portion forming fold lines is formed. Therefore, when viewing the first main body corner from the inner surface side By the first recess, the corner of the first body is gently raised.

By the bulge, the front end portion of the first top corner portion of the first recessed portion becomes an inclined surface toward the direction of the mouth stopper, and the inclined surface increases the liquid velocity at the time of liquid injection. The liquid is smoothly injected, which can reduce the residual of the liquid, especially even if the liquid contains solids and is viscous, it can be smoothly injected, which can reduce the residual of the liquid .

In addition, the bulge of the first body corner formed by the first recess forms a smooth surface at the corner of the first body. Since the smooth surface and the fold line for forming the concave portion sandwiching the two are positive The angle between the panel and the side panel becomes larger, so the resistance to the flow of the liquid contacting the corner of the first main body is smaller than that of the main body at a substantially right angle in the conventional liquid paper container, increasing the liquid At the same time as the flow rate, even when the liquid substance contains a solid substance, the solid substance is sandwiched between the corners of the first main body, and even if the liquid substance is a viscous substance, the adsorption of the solid substance to the main body part can be effectively suppressed. In the case of the inner surface, even if the liquid substance includes a solid substance or a viscous substance, it can be smoothly injected, and the residual of the liquid substance can be reduced.

The invention recited in claim 2 is characterized in that the top portion described in claim 1 forms an inclined surface with the front panel side lower and the back panel side higher.

According to the invention described in claim 2, the top portion forms an inclined surface with the front panel side low and the back panel side high. Therefore, when the liquid is poured, if the first top corner is directed downward The inclination is formed by the corner formed by the top edge of the back panel and the top edge of the side panel (hereinafter referred to as the second top corner) located on the diagonal of the first top corner as described above. At this time, the apex of air stagnation at the top of the container body becomes the second top corner.

As a result, when the first top corner is inclined toward the lower side, the relative distance between the liquid surface and the inner surface of the top is compared with the conventional opening shown in FIG. 21 when the top is formed to have the same inclination angle. The tied paper container becomes larger. As a result, when the liquid material is poured, even if the paper container with the mouth plug is inclined more greatly than the conventional paper container with the mouth plug, the communication between the upper part of the opening of the mouth plug and the air stagnation can be maintained Since the liquid substance can be injected by suppressing the jumping of the liquid substance, the liquid substance can be easily, quickly and smoothly injected.

The invention described in claim 3 is characterized in that the length of the first recessed part described in claim 1 or 2 from the start point to the end point is 50% or more of the height of the front panel of the main body part.

According to the invention described in claim 3, by setting the length from the start point to the end point of the first concave portion to 50% or more of the height of the front panel, the peeling of the solid matter or the viscous matter from the wall surface can be more effectively promoted, It can smoothly inject solid and sticky materials. In addition, if the length from the start point to the end point is set to 50% or more of the height, the eye-catching property of the container can be improved, and a highly designed container can be made.

The invention described in claim 4 is characterized in that, in the first recessed part described in any one of claims 1 to 3, the width of the widest part in the horizontal direction is 10% of the width of the front panel of the main body part Less than 30% of the above.

According to the invention recited in claim 4, since the width of the widest part in the horizontal direction of the first recess is 10% or more of the width of the front panel of the main body, it is possible to prevent accumulation of contents such as solid objects In the case of corners or adsorption, the contents are prevented from remaining, and the injection is smoothly performed. In addition, since the width of the widest part in the horizontal direction of the first recess is less than 30% of the width of the front panel of the main body, the container can be surely held in the filling machine of the molded container , Stable container formation.

The invention described in claim 5 is characterized in that the paper container with a flap described in any one of claims 1 to 4 is formed by a blank sheet, and it is formed by at least a laminate on a cardboard base material The paper container material of the sealing material on the back side is formed, and includes: a front panel, a right side panel, a back panel, and a left side panel connected by a longitudinal fold line of the main body where the aforementioned main body is formed; A pair of top panels facing each other connected to the upper ends of the front panel and the back panel, and a pair of side folding panels connected to the upper ends of the left panel and the right panel via the top horizontal folding line; The grid lines are respectively connected to the sealing plates at the upper ends of the top panel and the side panels; and a pair of opposed bottom panels connected to the lower ends of the front panel and the back panel via a bottom horizontal folding line and connected to the bottom horizontal folding line A pair of inner panels facing each other at the lower ends of the left and right panels, the top panel connected to the upper end of the front panel, and the top transverse line near the upper end of the front panel as the first top corner, and An opening for attaching the spigot is formed at the intersection of the top longitudinal fold line between the top panel and any one of the pair of fold panels, and the connection point at the corner of the first body is formed The longitudinal fold line of the main body between the front panel and either of the left and right side panels is based on the intersection point or a position slightly away from the intersection point as a starting point, and from the starting point toward the front panel and the left and right side panel Divergence, extending toward the intersection of the bottom horizontal fold line of the front panel and the bottom horizontal fold line of either of the left and right side panels, and at the intersection of the bottom horizontal fold line of the front panel and the bottom horizontal fold line of the left and right side panels The connection between the positions becomes the end point, and there are two crease lines for forming the recess where the first recess is formed.

According to the invention described in claim 5, since it is formed from one blank sheet, it can be easily manufactured.

The invention described in claim 6 is characterized in that it is formed by a container body and a flap. The container body is a quadrangular cylindrical body formed by a front panel, a right side panel, a back panel, and a left side panel; and a lower opening of the body is sealed The bottom of the body; and a flat quadrangular top that seals the opening above the main body, the mouth plug is provided on the top, the top becomes an inclined surface with the front panel side low and the back panel side high, and the mouth plug is provided at Among the four top corners of the top, the position of the first top corner formed by the top edge of the front panel and the top edge of either the left and right side panels is close to the position.

According to the invention recited in claim 6, the top portion forms an inclined surface with the front panel side low and the back panel side high, since the mouth plug is provided near the top and left sides of the front panel within the four top corners of the top The position of the first top corner formed by the top edge of either side panel. Therefore, when pouring the liquid, if the first top corner is inclined toward the lower side, The corner formed by the top edge of the back panel and the top edge of the side panel on the diagonal of the first top corner (hereinafter referred to as the second top corner.) becomes the upper side and is formed on the container body when inclined The vertex where the air on the top stays becomes the second top corner.

Thereby, when the first top corner is inclined toward the lower side, the relative distance between the surface of the liquid surface and the inner surface of the top is compared with the conventional opening shown in FIG. 7 when the top is formed to have the same inclination angle. The tied paper container becomes larger. As a result, when the liquid material is poured, even if the paper container with the mouth plug is inclined more greatly than the conventional paper container with the mouth plug, the communication between the upper part of the opening of the mouth plug and the air stagnation can be maintained Since the liquid substance can be injected by suppressing the jumping of the liquid substance, the liquid substance can be easily, quickly and smoothly injected. [Effect of invention]

As described above, according to the paper container of the present invention having a flap, compared with a container that does not use the technology of the present invention, the liquid material from the container body can be smoothly injected, and the liquid material in the container body can be reduced Of residues.

Hereinafter, an example of the embodiment of the paper container with a flap of the present invention will be described in detail with reference to the drawings. 1 to 13 show a first example of the embodiment of the paper container with a flap of the present invention, FIG. 1 shows a right side view of the first example of the paper container with a flap, FIG. 2 is from FIG. 1 FIG. 3 is a perspective view from above of the paper container with a flap, FIG. 3 is a perspective view from the diagonal side of the paper container with a flap shown in FIG. 2, and FIG. 4 is an explanatory view of the first recessed part. FIGS. 5 to 10 are explanatory diagrams showing other examples of the first concave portion, FIG. 11 is an explanatory diagram showing the position of the mouth plug where the liquid substance is injected, and FIG. 12 is a cross-sectional explanatory diagram showing the injection state of the liquid substance, FIG. 13 1 is a plan view showing a blank sheet forming the container body of the container with a stopper shown in FIG. 1.

The paper container 1 with a flap in the first example is formed by a container body 9 and a flap 10, and the container body is formed in a square tube shape formed by a front panel 2, a right side panel 3, a back panel 4, and a left side panel 5. The main body portion 6; the bottom portion 7 that seals the lower opening portion of the main body portion 6; and the flat top portion 8 that seals the upper opening portion of the main body portion 6, the mouth plug is provided on the top portion 8, in the first example, the container body 9. It is formed by a blank sheet described later. Here, the flat top 8 means that the top 8 such as a roof type does not form a convex shape, and the front side and the back side have different heights, and the top forming an inclined surface is included in the flat top 8.

The spout 10 provided on the top 8 is the top side 2a of the front panel 2 and the top side 3a of either the right side panel 3 and the left side panel 5 provided in the four top corners 11 near the top 8; The position of the first top corner 11(A) formed by 5a. In the first example, it is formed by the top side 2 a of the front panel 2 and the top side 3 a of the right side panel 3. Here, the approaching position means a position closer to the first top corner 11(A) side from the center position of the top 8, and the closer position means the closer to the first top corner 11(A).

The main body portion 6 is formed in the four main 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, forming a first top corner portion 11(A) provided with a mouth plug 10 The first body corner 12 (A) between the front panel 2 and the right panel 3 takes the first top corner 11 (A) or a position slightly away from the first top corner 11 (A) as the starting point S, from The starting point S diverges toward the front panel 2 and the right panel 3 and extends toward the bottom 7, and then comes to the first bottom corner 13 (A) formed by the bottom edge 2b of the front panel 2 and the bottom edge 3b of the right panel 3 The positional connection between them serves as the end point E, and a first concave portion 16 surrounded by two concave portion forming fold lines 14 and 15 is formed.

In the first example, the two crease lines 14 and 15 for forming the first recess 16 are formed with the starting point S as the first top corner 11(A), but the first top corner 11(A ) A slightly distant position is set as the starting point S. When the starting point S is set at a position slightly away 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). By setting the base point S in this range, solid objects and sticky objects can be smoothly injected.

In addition, although the end points E of the two concave-line forming folds 14 and 15 are used as the first bottom corner 13 (A), the end point may be set at a position between the first bottom corner 13 (A) E. In this case, as long as the length L from the starting point S to the ending point E is at least 10% of the height H of the front panel member 2 of the main body 6, it is preferable to promote the peeling of the solid matter and the viscous matter from the wall surface. Also, as shown in FIG. 4, as long as the length L from the starting point S to the ending point E is 50% or more of the height H, it is possible to effectively promote the peeling of the solid matter and the viscous matter from the wall surface, and the solid form can be injected smoothly Thing, sticky thing. In addition, if the length L from the starting point S to the ending point E is 50% or more of the height H, the eye-catching property of the container can be improved, and a container with high design can be made.

In addition, it is desirable that the first concave portion 16 has a width W1 of the widest part in the horizontal direction of 10% or more and less than 30% of the width W2 of the front panel 2 of the main body portion 6 (see FIG. 4 ). By setting the width W1 to be 10% or more of the width W2, the content such as solids accumulates or is excessively sucked in the corner to leave the content, so that the content can be smoothly ejected. Moreover, by setting the width W1 to less than 30% of the width W2, the container can be surely held in the filling machine for the molded container, and the container can be molded stably.

Moreover, in the first example, the two crease lines 14 and 15 for forming the first recess 16 are formed by an imaginary line connecting the first top corner 11 (A) and the first bottom corner 13 (A). The center is symmetrical, but it may or may not be bilaterally symmetrical. 5 to 10 show other examples of the first concave portion 16 formed by the two concave portion forming fold lines 14 and 15.

Also, in the first example, the second body corner 12 (B) located diagonally to the first body corner 12 (A) and the first top corner 11 (A) located diagonally The second top corner 11(B) or the second top corner 11(B) is away from the starting point S, and extends from the starting point S toward the back panel 4 and the left side panel 5 toward the bottom 7; The position connection between the bottom edge 4b of the 4 and the second bottom corner 13(B) formed by the bottom edge 5b of the left side panel 5 serves as the end point E, and is formed to be surrounded by two concave-line forming fold line portions 17, 18的second recess 19

The paper container 1 with a flap formed in this way is located at the first main body corner 6 (A) of the main body 6 of the container body 9 with the first top corner 11 (A) or from the first top corner 11 (A) is slightly away from the starting point S, from the starting point S toward the front panel 2 and the right side panel 3 and extends toward the bottom 7 direction, and connects to the position between the first bottom corner 13 (A) As the end point E, the first concave portion 16 surrounded by the two concave portion forming fold lines 14 and 15 is formed. Therefore, when viewed from the inner surface side toward the first main body corner portion 12(A), the The recessed portion 16 forms a gentle ridge 20 on the first main body corner portion 12 (A), and the tip portion of the first recessed portion 16 on the side of the first top corner portion 11 (A) becomes an inclined surface 21 ( See Figure 12.).

When pouring the liquid substance contained inside, the container body 9 is tilted so that the first top corner 11 (A) and the first body corner 12 (A) are downward (see FIG. 11) And FIG. 12), the first main body corner portion 12(A) has a groove shape, and the liquid in the container body 9 is induced to the direction of the mouth stopper 10, and the liquid is smoothly injected.

In addition, in the groove-shaped first body corner portion 12 (A), since the first concave portion 16 forms the bulge 20, the front end portion on the first top corner portion 12 (A) side becomes an inclined surface 21 toward the direction of the mouth plug 10, so The liquid material flowing in the direction of the mouth plug 10 in the container body 9 increases the flow rate of the liquid material due to the inclined surface 21, so that the liquid material is smoothly injected.

In addition, the protrusion 20 of the first main body corner portion 12 (A) formed by the first recessed portion 16 forms a smooth surface 22 on the first main body corner portion 12 (A). Since the angles of the front panel 2 and the right side panel 5 of the fold line portions 14 and 15 for recess formation become larger, the resistance to the flow of the liquid material contacting the first main body corner portion 12(A) is lower than in the conventional liquid paper container The corner of the main body at a substantially right angle increases the flow velocity of the liquid, and even when the liquid contains a solid, the solid is sandwiched between the first body corner 12(A), and even if the liquid In the case of a viscous substance, it is possible to effectively suppress the so-called adsorption on the inner surface of the main body 6.

Also, in the first example, the second main body corner 12 (B) is diagonal to the first main body corner 12 (A), and the first top corner 11 (A) is diagonal to the first main body corner 12 (A). The second top corner portion 11(B) or the second top corner portion 11(B) is away from the starting point S, extending from the starting point S toward the back panel 4 and the left side panel 5 toward the bottom 7 and exiting from the back The positional connection between the bottom edge 4b of the panel 4 and the second bottom corner 13(B) formed by the bottom edge 5b of the left panel 5 serves as the end point E, and is surrounded by two fold lines 17 and 18 for forming the recess The second concave portion 19 is held. Therefore, when the container body 9 is held at the time of dispensing, the second body corner 12 (B) is directed to the palm side, and the second body corner 12 (B) 2 The concave portion 19 abuts on the palm, so there is no pain caused by the corners and it is easy to hold and can be grasped firmly.

FIG. 13 shows an example of forming the blank sheet 30A of the paper container 1 with a flap in the first example. The blank sheet 30A is formed of a paper container material laminated with a sealing material on at least the back side of the cardboard base material, and is connected to the front panel 2 and the right panel 3 where the main body 6 is formed via the main body longitudinal fold lines 31, 32, and 33 , Back panel 4, left panel 5.

At the upper ends of the front panel 2 and the back panel 4 are a pair of opposed top panels 36 and 37 that are connected to each other at the place where the top 8 is formed via the top horizontal fold lines 34 and 35, and at the upper ends of the right panel 3 and the left panel 5, It is a pair of opposed folding panels 40 and 41 that connect to each other where the top 8 is formed via the top horizontal folding lines 38 and 39. The top diagonal folding lines 42 and 43 are provided to the folding panels 40 and 41. In addition, at the upper ends of the top panels 36, 37 and the folding panels 40, 41, the sealing plates 48, 49, 50, 51 are connected via the sealing portion horizontal folding lines 44, 45, 46, 47.

At the lower ends of the front panel 2 and the back panel 4 are a pair of bottom panels 54 and 55 facing each other where the bottom 7 is formed via bottom transverse fold lines 52 and 53, and at the lower ends of the right panel 3 and the left panel 5, It is a pair of opposed inner panels 58 and 59 where the bottom 7 is formed via bottom transverse fold lines 56 and 57. In addition, the open edge on one side of the blank thin plate 30A is a side seal plate 61 connected to seal the other open end of the blank thin plate 30A via a side seal vertical fold line 60.

The top panel 36 connected to the upper end of the front panel 2 of the blank sheet 30A thus constituted is near the top horizontal fold line 34 of the front panel 2 which becomes the first top corner 11 (A), and the top panel 36 and the folding panel 40 An opening 64 for attaching the spigot is formed at the position of the intersection 63 of the top vertical fold line 62 provided therebetween. In addition, when the blank sheet 30A is formed by laminating an aluminum sheet between the cardboard material and the sealing material, the blank sheet material 30A may be cut out to leave the aluminum sheet portion.

In addition, the main body vertical fold line 31 between the front panel 2 and the right side panel 3 connecting the intersection 63 where the first body corner 12 (A) is formed starts from the position slightly away from the intersection 63 or the intersection 63 , From the starting point S toward the front panel 2 and the right side panel 3 diverge, towards the bottom horizontal fold line 52 of the front panel 2 and the bottom horizontal fold line 56 of the right side panel 3, when coming to the bottom horizontal fold line 52 of the front panel 2 and the right side panel 3 The position between the intersection points 65 of the bottom horizontal fold line 56 is connected as the end point E, and there are two fold line portions 14 and 15 for forming a recess where the first recess 16 is formed.

Furthermore, in this example, a main body vertical fold line 33 is formed between the back panel 4 and the left side panel 5 at the first main body corner 12 (A) and the second main body corner 12 (B) located diagonally, Taking the intersection 67 of the top horizontal fold line 35 of the back panel 4 and the top vertical fold line 66 between the top panel 37 and the fold panel 41 as the starting point S, from the starting point S toward the back panel 4 and the left side panel 5 diverging toward the back panel The bottom horizontal fold line 53 of 4 and the bottom horizontal fold line 57 of the left side panel 5 extend and exist, and they are connected as the end point E at the intersection 68 between the bottom horizontal fold line 53 of the back panel 4 and the bottom horizontal fold line 57 of the left side panel 5, On the other hand, there are two fold line portions 17 and 18 for forming a recess where the second recess 19 is formed.

In this example, the starting point S of the two crease-forming folds 14 and 15 at the place where the first recess 16 is formed, although there is a horizontal fold 34 at the top of the front panel 2 and between the top panel 36 and the fold panel 40 The intersection 63 of the top vertical fold line 62 is used as the starting point S, but a position slightly away from the intersection 63 may be used as the starting point S. In addition, the end point E of the two fold lines 14 and 15 for forming the concave portion is defined as the end point E of the intersection 65 of the bottom horizontal fold line 52 of the front panel 2 and the bottom horizontal fold line 56 of the right panel 3, but as long as it comes The position between the intersection 65 of the bottom horizontal fold line 52 of the front panel 2 and the bottom horizontal fold line 56 of the right panel 3 is sufficient.

Moreover, even if the starting point S of the two concave portion forming fold lines 17 and 18 at the place where the second concave portion 19 is formed, although the top horizontal line 35 of the back panel 4 and the top panel 37 and the fold panel 41 have The intersection 67 of the top vertical fold line 66 serves as the starting point S, but a position slightly away from the intersection 67 may serve as the starting point S. In addition, at the end points E of the two fold line forming portions 17 and 18 for the concave portion formation, although the intersection point 68 of the bottom horizontal fold line 53 of the back panel 4 and the bottom horizontal fold line 57 of the left panel 5 is used as the end point E, as long as The position between the intersection 68 of the bottom horizontal folding line 53 of the back panel 4 and the bottom horizontal folding line 57 of the left side panel 5 is sufficient.

1 to 12 show a second example of an embodiment of a paper container with a flap of the present invention, FIG. 14 is a right side view of a paper container with a flap of the second example, and FIG. 15 is a view from above 14 is a perspective view of a paper container with a mouth stopper shown in FIG. 16, FIG. 16 is a perspective view of the paper container with a mouth stopper shown in FIG. 14 viewed diagonally from the main body, and FIG. 17 is an explanatory view of a schematic longitudinal sectional view of FIG. FIG. 18 is an explanatory diagram of a state in which the container body is tilted when pouring a liquid substance, and FIG. 19 is a plan view of a blank thin plate forming the container body of the container with a stopper shown in FIG. 14. Regarding the second example, the same structure as the first example will be described with the same symbol.

The paper container 1 with a flap in the second example is formed by the container body 9 and the flap 10 in the same way as the first example. The container body is composed of a front panel 2, a right side panel 3, a back panel 4, and a left side panel 5 The main body 6 is formed in a rectangular tube shape; the bottom 7 that seals the lower opening of the main body 6; and the flat quadrangular top 8 that seals the upper opening of the main body 6 is formed on the top 8, In this example, the container body 9 is formed by one blank thin plate described later.

As shown in FIGS. 14 and 15, the top portion 8 is an inclined surface where the front panel 2 side is low and the back panel 4 side is high. The inclination angle θ of the top 8 is preferably 10° or more and 30° or less. If the inclination angle θ is 10° or more, when the liquid body is poured at the time to be described later, when the container body 9 is inclined, air can escape from the mouth plug, and good air retention can be formed, which can effectively suppress the mouth plug. 10 The beating of the flowing liquid. If the inclination angle θ is 30° or less, even if the liquid is a beverage, even if the mouth is directly in contact with the mouth stopper for drinking, the nose will not touch the top surface and can be easily consumed. In addition, the upper limit value of the inclination angle θ of the top portion 8 is that the upper end of the upper surface of the mouth plug 10 inclined along the inclination of the top portion 8 and the upper end of the top portion 8, that is, the height of the top edge 4a of the back panel 4 coincides The angle is ideal. Even if the inclination angle θ of the top portion 8 is set to the upper end of the top portion 8, that is, the top edge 4a of the back panel 4 becomes a larger angle than the upper upper end of the mouth plug 10, the air trapped by this The effect of suppressing the beating of the liquid substance does not change. If it is set to such a large angle, this amount increases the height of the paper container 1 with a flap and increases the amount of material.

The mouth stopper 10 provided on the top 8 is the same as the first example, and is provided in the four top corners 11 near the top 8 by the top side 2a of the front panel 2 and the right side panel 3 and the left side panel 5. The position of the first top corner 11 (A) formed by one of the top edges 3a, 5a. In this example, the first top corner 11 (A) is formed by the top side 2 a of the front panel 2 and the top side 3 a of the right side panel 3. Here, the approaching position means a position closer to the first top corner 11(A) from the center position of the top 8, and the closer position means the closer to the first top corner 11(A).

In the second example, the body 6 is formed in four body corners 12 formed between the front panel 2, the right panel 3, the back panel 4, and the left panel 5 in the same manner as the first example. The first body corner 12 (A) between the front panel 2 and the right side panel 3 of the first top corner 11 (A) of the mouth plug 10 takes the first top corner 11 (A) as the starting point S, from The starting point S extends toward the front panel 2 and the right panel 3 and extends toward the bottom 7. The four bottom corners 13 of the bottom 7 are formed by the bottom edge 2b of the front panel 2 and the bottom edge 3b of the right panel 3 The position between the first bottom corner 13 (A) is connected as the end point E, and the first recess 16 that surrounds the two fold line forming recesses 14 and 15 is formed.

The two crease lines 14 and 15 for forming the first concave portion 16 are the same as the first example in the second example. Although the starting point S is used as the first top corner 11 (A), the first top corner may be formed from the first top The position where the corner 11 (A) is slightly away is set as the starting point S. When the starting point S is set at a position slightly away 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 flap formed in this way, the top 8 forms an inclined surface with the front panel 2 side low and the back panel 4 side high. Since the flap 10 is provided in the four top corners 11 of the top 8 It is close to the position of the first top corner 11 (A) formed by the top edge 2a of the front panel 2 and the top edge 3a of the right panel 3, so when the liquid is poured, if the first top corner is 11(A) is inclined toward the lower side, and is located on the diagonal of the first top corner 11(A), the second top corner formed by the top edge 4a of the back panel 4 and the top edge 5a of the left side panel 5 11(B) becomes the upper side, and the vertex of the air stagnation 23 formed on the top 8 of the container body 9 when inclined becomes the second top corner 11(B) (see FIG. 18).

As a result, when the first top corner 11 (A) is tilted toward the lower side, the relative distance between the liquid surface F of the liquid material and the surface of the inner surface of the top 8 is formed to have the same inclination angle than when the top 73 is formed The conventional paper container 70 with a flap shown in FIG. 20 is enlarged. As a result, even when the paper container 1 with a flap is tilted more sharply than the conventional paper container 70 with a flap at the time of liquid injection, the upper part of the opening of the flap 10 and the air stagnation 23 can be maintained In the connected state, since the liquid substance is suppressed from jumping, the liquid substance can be poured out, so that the liquid substance can be easily and quickly poured out.

Also, in the second example, it is the same as the first example, since it is the first main body corner portion 12 (A) of the main body portion 6 of the container body 9 so as to extend from the first top corner portion 11 (A) or from the first top portion The position where the corner portion 11(A) is slightly away is used as the starting point S, and it extends from the starting point S toward the front panel 2 and the right side panel 3 and extends toward the bottom 7 and between the first bottom corner 13(A) The position connection is the end point E, and the first concave portion 16 surrounded by the two concave portion forming fold lines 14 and 15 is formed. Therefore, when viewing the first body corner portion 12(A) from the inner surface side, the 1 The concave portion 16 forms a gentle ridge 20 toward the first main body corner portion 12(A), and the front end portion of the first concave portion 16 on the side of the first top corner portion 11(A) becomes an inclined surface 21 ( See Figure 17.).

Thereby, when pouring the liquid substance contained inside, the container body 9 is inclined so that the first top corner 11 (A) and the first body corner 12 (A) are downward, The first main body corner portion 12 (A) is formed into a groove shape, and the liquid substance in the container body 9 is induced to the direction of the mouth stopper 10, and the liquid substance is smoothly poured out.

In addition, in the groove-shaped first body corner portion 12 (A), since the first concave portion 16 forms the ridge 18, the front end portion of the first top corner portion 12 (A) side becomes an inclined surface 21 toward the direction of the mouth plug 10, so , The liquid material flowing in the direction of the mouth plug 10 in the container body 9, the inclined surface 21 increases the flow rate of the liquid material, and reduces the jump of the liquid material flowing in the mouth plug 10 when the liquid material is injected At the same time, let the liquid be poured out smoothly.

In addition, the protrusion 20 of the first main body corner portion 12 (A) formed by the first recessed portion 16 forms a smooth surface 22 on the first main body corner portion 12 (A). Since the angles of the front panel 2 and the right side panel 5 of the fold line portions 14 and 15 for recess formation become larger, the resistance to the flow of the liquid material contacting the first main body corner portion 12(A) is lower than that of the conventional one with a mouth plug The corners of the main body of the paper container at a substantially right angle increase the flow rate of the liquid, and even when the liquid contains solids, the solids are caught in the first main body corner 12(A). When the object is a viscous substance, it can effectively suppress the so-called adsorption to the inner surface of the main body 6.

FIG. 19 shows an example of forming the blank sheet 30B of the paper container 1 with a flap in the second example. The blank sheet 30B of the second example is formed of a paper container material laminated with a sealing material on at least the back side of the cardboard base material in the same way as the blank sheet 30A of the first example, and is connected to form a main body via longitudinal fold lines 31, 32, and 33 of the main body The front panel 2, the right side panel 3, the back panel 4, and the left side panel 5 at the portion 6.

At the upper ends of the front panel 2 and the back panel 4 are a pair of opposed top panels 36 and 37 that are connected to each other at the place where the top 8 is formed via the top horizontal fold lines 34 and 35, and at the upper ends of the right panel 3 and the left panel 5, It is a pair of opposed folding panels 40 and 41 that connect to each other where the top 8 is formed via the top horizontal folding lines 38 and 39. The top diagonal folding lines 42 and 43 are provided to the folding panels 40 and 41. In addition, at the upper ends of the top panels 36, 37 and the folding panels 40, 41, the sealing plates 48, 49, 50, 51 are connected via the sealing portion horizontal folding lines 44, 45, 46, 47.

At the lower ends of the front panel 2 and the back panel 4 are a pair of bottom panels 54 and 55 facing each other where the bottom 7 is formed via bottom transverse fold lines 52 and 53, and at the lower ends of the right panel 3 and the left panel 5, It is a pair of inner panels 58 and 59 facing each other where the bottom 7 is formed via the bottom horizontal fold lines 56 and 57.

In addition, the open edge on one side of the blank thin plate 30B is a side seal plate 61 that connects and seals the other open end of the blank thin plate 30B via the side seal vertical fold line 60.

The top panel 36 connected to the upper end of the front panel 2 of the blank sheet 30B constructed in this way is close to the top horizontal fold line 34 of the front panel 2 that becomes the first top corner 11 (A), and the top panel 36 and the folding panel 40 An opening 64 for attaching the spigot is formed at the position of the intersection 63 of the top vertical fold line 62 provided therebetween. In addition, when the blank sheet 30B is formed by laminating an aluminum sheet between the cardboard material and the sealing layer, the blank sheet material 30B may be cut out to leave the aluminum sheet portion.

Also, the main body vertical fold line 31 between the front panel 2 and the side panel 3 connecting the intersection 63 where the first body corner 12 (A) is formed is taken from a position slightly away from the intersection 63 or the intersection 63 as the starting point S , From the starting point S toward the front panel 2 and the right side panel 3 diverge, extending toward the bottom horizontal fold line 52 of the front panel 2 and the bottom horizontal fold line 56 of the right panel 3, and coming to the bottom horizontal fold line 52 of the front panel 2 and the right side panel 3 The position between the intersections 65 of the bottom horizontal fold lines 56 is connected as the end point E, and there are two fold line portions 14 and 15 for forming a concave portion where the first concave portion 16 is formed.

In this example, the starting point S of the two crease-forming fold portions 14 and 15 at the place where the recess 16 is formed, although the top horizontal cross-fold line 34 of the front panel 2 and the top between the top panel 36 and the fold panel 40 The intersection 63 of the vertical broken line 62 serves as the starting point S, but a position slightly away from the intersection 63 may serve as the starting point S. In addition, the end point E of the two fold lines 14 and 15 for forming the concave portion is defined as the end point E of the intersection 65 of the bottom horizontal fold line 52 of the front panel 2 and the bottom horizontal fold line 56 of the right panel 3, but as long as it comes The position between the intersection 65 of the bottom horizontal fold line 52 of the front panel 2 and the bottom horizontal fold line 56 of the right panel 3 is sufficient.

1‧‧‧ Paper container with mouth stopper 2‧‧‧Front panel 2a‧‧‧Top side 2b‧‧‧Bottom 3‧‧‧Right panel 3a‧‧‧Top side 3b‧‧‧Bottom 4‧‧‧Back panel 4a‧‧‧Top side 4b‧‧‧Bottom 5‧‧‧Left panel 5a‧‧‧Top side 5b‧‧‧Bottom 6‧‧‧Main part 7‧‧‧Bottom 8‧‧‧Top 9‧‧‧Body 10‧‧‧ mouth plug 11‧‧‧Top corner 11(A)‧‧‧First corner 11(B)‧‧‧The second top corner 12‧‧‧Main corner 12(A)‧‧‧First corner 12(B)‧‧‧Second body corner 13(A)‧‧‧First corner 13(B) ‧‧‧ 2nd corner 14.15‧‧‧Folded line forming part 16‧‧‧The first recess 17, 18‧‧‧Fold line forming part 19‧‧‧Second recess 20‧‧‧Uplift 21‧‧‧inclined surface 22‧‧‧Smooth surface 23‧‧‧ Entrapped air 30A, 30B‧‧‧ Blank sheet 31, 32, 33 34, 35‧‧‧ Top horizontal folding line 36、37‧‧‧Top panel 38, 39‧‧‧ Top horizontal folding line 40、41‧‧‧Folding panel 42, 43‧‧‧ Top diagonal fold line 44, 45, 46, 47 48, 49, 50, 51 52、53‧‧‧Bottom horizontal folding line 54、55‧‧‧Bottom panel 56、57‧‧‧Bottom horizontal folding line 58、59‧‧‧Inner panel 60‧‧‧Seal vertical folding line 61‧‧‧Side sealing plate 62‧‧‧Top vertical folding line 63‧‧‧Intersection 64‧‧‧Opening for mouth plug installation 65‧‧‧Intersection 66‧‧‧Top vertical folding line 67, 68‧‧‧ intersection S‧‧‧Starting point E‧‧‧End W‧‧‧liquid F‧‧‧Liquid

[Fig. 1] A right side view showing a first example of the embodiment of the paper container with a flap of the present invention. [Fig. 2] A perspective view from above of the paper container with a flap shown in Fig. 1. [Fig. 3] A perspective view seen from the diagonal side of the paper container with a flap shown in Fig. 2. [Fig. 4] An explanatory diagram of the first concave portion. [Fig. 5] An explanatory diagram showing another example of the first concave portion. [Fig. 6] An explanatory diagram showing another example of the first concave portion. [Fig. 7] An explanatory diagram showing another example of the first concave portion. [Fig. 8] An explanatory diagram showing another example of the first concave portion. [Fig. 9] An explanatory diagram showing another example of the first concave portion. [Fig. 10] An explanatory diagram showing another example of the first concave portion. [Fig. 11] An explanatory view showing the position of the mouth plug when a liquid substance is injected. [Fig. 12] A cross-sectional explanatory view showing a state of pouring out a liquid substance. [Fig. 13] A plan view showing a blank thin plate forming the container body of the container with a flap shown in Fig. 1. [Fig. 14] A right side view showing a second example of the embodiment of the paper container with a flap of the present invention. [Fig. 15] A perspective view of the paper container with a flap shown in Fig. 14 viewed from above. [Fig. 16] A perspective view of the paper container with a flap shown in Fig. 14 viewed diagonally from the main body. [Fig. 17] Fig. 17 is an explanatory diagram of a schematic longitudinal cross-sectional view. [Fig. 18] An explanatory diagram showing a state in which the container body is tilted when pouring a liquid substance. [Fig. 19] A plan view showing a blank thin plate forming the container body of the container with a flap shown in Fig. 14. [Fig. 20] A perspective view of a conventional paper container with a flap, viewed from above. [Fig. 21] An explanatory diagram of a schematic longitudinal cross-sectional view of Fig. 20. [Fig. 22] An explanatory diagram showing a state in which the container body is tilted when pouring a liquid substance.

1‧‧‧ Paper container with mouth stopper

2‧‧‧Front panel

2a‧‧‧Top side

2b‧‧‧Bottom

3‧‧‧Right panel

3a‧‧‧Top side

3b‧‧‧Bottom

4a‧‧‧Top side

5a‧‧‧Top side

6‧‧‧Main part

7‧‧‧Bottom

8‧‧‧Top

9‧‧‧Body

10‧‧‧ mouth plug

11‧‧‧Top corner

11(A)‧‧‧First corner

11(B)‧‧‧The second top corner

12‧‧‧Main corner

12(A)‧‧‧First corner

13‧‧‧Bottom corner

13(A)‧‧‧First corner

14‧‧‧Fold line forming part

15‧‧‧Fold line forming part

16‧‧‧The first recess

36‧‧‧Top panel

37‧‧‧Top panel

40‧‧‧Folding panel

50‧‧‧Seal plate

E‧‧‧End

S‧‧‧Starting point

Claims (6)

A paper container with a mouth stopper, characterized by a container body and a mouth stopper, the container body is a quadrangular cylindrical body formed by a front panel, a right side panel, a back panel, and a left side panel; a sealed body portion The bottom of the opening below; and the flat top that seals the opening above the main body, the mouth plug is provided on the top, The mouth plug is provided at a position close to the first top corner formed by the top edge of the front panel and the top edge of either side panel in the four top corners of the top, The main body portion is the front plate and the left and right sides that form the first top corner portion provided with the mouth plug among the four main body corners formed between the front plate, the right side plate, the back plate, and the left side plate The first main body corner between any side panels takes the first top corner or a position slightly away from the first top corner as a starting point, and from this starting point toward the front panel and either of the left and right sides The panel diverges and extends toward the bottom, and the connection between the bottom edge of the front panel and the first bottom corner formed by the left and right side panels is the end point, and is formed The two recesses form a first recess surrounded by a fold line. The paper container with a flap as described in item 1 of the patent application range, wherein the top portion forms an inclined surface with the front panel side lower and the back panel side higher. The paper container with a flap as described in item 1 or 2 of the patent application range, wherein the length of the first recess from the start point to the end point is 50% or more of the height of the front panel of the main body part. The paper container with a flap as described in any one of claims 1 to 3, wherein the width of the widest part in the horizontal direction of the first recess is the width of the front panel of the main body More than 10% is less than 30%. The paper container with a flap as described in any one of the items 1 to 4 of the patent application range, which is formed by a blank sheet and is a sealing material laminated on at least the back side of the board base The paper container material is formed and includes: a front panel, a right side panel, a back panel, and a left side panel connected by a longitudinal fold line of the main body where the main body is formed; and a front horizontal fold line connected to the front where the top is formed A pair of top panels facing each other at the upper end of the panel and the back panel and a pair of folding panels facing each other via the top horizontal folding line connected to the upper ends of the left panel and the right panel; A sealing plate at the upper end of the top panel and the side panel; and a pair of opposed bottom panels connected to the lower ends of the front panel and the back panel via a bottom horizontal fold line, and connected to the left panel and the right side panel via the bottom horizontal fold line A pair of inner panels facing each other at the lower end, The top panel connected to the upper end of the front panel, the top horizontal folding line near the upper end of the front panel that becomes the first top corner, and any of the top panel and the pair of folding panels There is an opening for the installation of the mouth plug at the intersection of the top vertical fold line The longitudinal fold line of the main body between the front panel connecting the intersection and the left and right side panels where the corner of the first main body is formed starts from the intersection or a position slightly away from the intersection as the starting point. The starting point diverges toward the front panel and any of the left and right side panels, extends toward the bottom horizontal fold line of the front panel and the bottom horizontal fold line of the left and right side panels, and comes to the bottom horizontal fold line of the front panel The connection between the intersection points of the bottom horizontal fold lines of any one of the left and right side panels becomes an end point, and there are two fold line portions for forming recesses where the first recesses are formed. A paper container with a mouth stopper is characterized by a container body and a mouth stopper. The container body is a quadrangular cylindrical body formed by a front panel, a right side panel, a back panel, and a left side panel; The bottom of the lower opening; and a flat quadrangular top that seals the upper opening of the main body, the mouth plug is provided on the top, the top becomes an inclined surface with the front panel side low and the back panel side high, and the mouth plug is It is provided in the four top corners of the top, close to the position of the first top corner formed by the top edge of the front panel and the top edge of either the left and right side panels.

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