JP2008013188A - Self-standing packaging body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a self-standing packaging body in which a film inside the packaging body is cleanly opened to each corner without any twisting, a content can be sufficiently stored and the content can be fully taken out, and a bottom side is opened in a flat shape to realize the stable self-standing property. <P>SOLUTION: In the packaging body, a film is folded in a W-shape in side view, right and left sides of the film are sealed in front view, and the packaging body has an inverted Y-shape in side view. When a content is filled in the packaging body and an upper portion of the packaging body is sealed to form a Δ-shape in side view, and a bottom side of the Δ-shape forms a self-standing surface of a substantially flat shape. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a package that can stand by itself at the bottom surface of the package.

2. Description of the Related Art Conventionally, a self-supporting package including a refill liquid such as liquid detergent, shampoo, and rinse, and solids and powders such as foods and seasonings is known.
This type of package is configured so that the package can be self-supporting by accommodating the contents, so that the bottom of the package swells and the bottom surface forms a self-supporting surface having a flat shape. Therefore, since the package can be put up, it is convenient for display at the time of sale, and since it can be stored upright after the purchase by the consumer, it can be transferred to another container. It is a packaging body that does not require time for replacement and is convenient for consumers.

However, the conventional package has a problem that when the contents are accommodated and the bottom of the package swells, the film on the bottom does not open sufficiently and does not have a flat shape.
In particular, if the film on the bottom surface does not open sufficiently, it becomes a three-dimensional self-supporting surface, the stability during self-supporting is low, and the whole contents will move upward, falling due to light vibrations, etc. There are problems such as.

  The present invention has been made in order to solve such problems. The main object of the present invention is a self-supporting package, in which the film inside the package opens cleanly, and the contents are sufficiently opened. And the contents can be taken out cleanly. Moreover, it is providing the package which improved stability at the time of self-supporting by fully opening the film of the bottom face of a package, and forming planar shape.

  Therefore, in order to solve these problems, the invention according to claim 1 of the present invention is a side view in which the film is folded into a W shape in a side view and both left and right sides of the film are sealed in a front view. A packaging body having an inverted Y shape, wherein the packaging body is filled with contents and the upper part of the packaging body is sealed to form a Δ shape in side view, and the bottom surface of the Δ shape is substantially planar It is a packaging body characterized by forming a self-supporting surface.

  Further, the invention according to claim 2 of the present invention is a package having a U shape in front view, in which left and right sides of the bottom portion of the package body are formed with notched portions that are sealed and cut obliquely. Filling the contents into the package and sealing the upper part of the package to form a Δ shape in a side view, and the bottom of the Δ shape forms a substantially planar self-supporting surface. It is the package which is characterized.

  Further, in the invention according to claim 3 of the present invention, the notch height b and the notch width c of the notch part are equal to the lateral width a of the package connecting the vertices of the left and right notch heights b. The package is characterized by being 1/4.

Further, the invention according to claim 4 of the present invention is characterized in that the correlation between the notch height b, the notch width c, and the lateral width a of the package satisfies the following formula 1. This is a self-supporting package.
ln (c) = α (b / a) −β (Formula 1)
(In (c) is the natural logarithm of c, and α and β satisfy 16 <α <26 and 0 <β <5.)

  Further, the invention according to claim 5 of the present invention is the package characterized in that the package has a taper inward in the front view, with the left and right side surfaces of the package facing upward. .

The invention according to claim 6 of the present invention is the package body, wherein the taper angle is in the range of 1 ° to 45 °.

  In order to solve the above-mentioned problems, the invention described in claim 1 of the present invention is that the invention described in claim 1 of the present invention folds the film into a W shape when viewed from the side, and the left and right sides of the film when viewed from the front. A package body having a reverse Y shape in side view formed by sealing, filling the contents into the package body, and sealing the upper part of the package body to form a Δ shape in side view, Since the Δ-shaped bottom surface forms a substantially planar self-supporting surface, the bottom film can form a planar self-supporting surface. Therefore, it is possible to provide a self-supporting package having stable self-supporting property and good filling property.

  Further, the invention according to claim 2 of the present invention is a package having a U shape in front view, in which left and right sides of the bottom portion of the package body are formed with notched portions that are sealed and cut obliquely. Filling the contents into the package and sealing the upper part of the package to form a Δ shape in a side view, and the bottom of the Δ shape forms a substantially planar self-supporting surface. Because it is a feature, the film inside the package can be opened well and the contents can be filled to every corner of the bag, and the bottom film can easily form a flat self-supporting surface. effective. Furthermore, it is possible to provide a package having high design properties.

  Further, in the invention according to claim 3 of the present invention, the notch height b and the notch width c of the notch part are equal to the lateral width a of the package connecting the vertices of the left and right notch heights b. Therefore, it is possible to form a package having excellent self-supporting property and filling property with a simple configuration.

Further, the invention according to claim 4 of the present invention is characterized in that the correlation between the notch height b, the notch width c, and the lateral width a of the package satisfies the following formula 1. Therefore, it is possible to form a package having excellent self-supporting property and filling property by simple linear calculation.
ln (c) = α (b / a) −β (Formula 1)
(In (c) is the natural logarithm of c, and α and β satisfy 16 <α <26 and 0 <β <5.)

  Further, the invention according to claim 5 of the present invention is characterized in that the packaging body has a taper inwardly with the left and right side surfaces of the packaging body facing upward in a front view. There is an effect that the opening to be taken out is narrowed and the contents can be easily taken out. Furthermore, since the center of gravity concentrates below the bag body, it is possible to achieve more stable independence.

The invention according to claim 6 of the present invention is characterized in that the angle of the taper is within a range of 1 ° to 45 °. There is an effect that becomes easy. Furthermore, since the center of gravity concentrates below the bag body, it is possible to achieve more stable independence.

As an example of the package 10 according to the present invention, as shown in FIG. 1, the film folded in the side view W shape is formed by sealing the left and right sides in the front view with a seal 1S. The package 10 is filled with the contents and the upper part of the package 10 is sealed 1s, whereby the surface 1 and the bottom surface 7 (self-supporting surface) of the package 10 are shown in side view as shown in FIG. 7) and the back surface 2 form a substantially triangular shape (Δ shape) smoothly connected. For this reason, as the contents are filled, the film on the bottom surface 7 is fully opened and the contents are filled without any gaps. Is possible. In addition, by forming the notched portions V in which the left and right sides of the bottom portion 3 of the package 10 are sealed and cut obliquely, a larger self-standing surface 7 is formed, and the package can be stably self-supported and has a high design property. 10 can be formed 9.

Hereinafter, the formation method of such a package and its structure are demonstrated.
As an example of the forming method of the package 10 according to the present invention, for example, as shown in FIG. 2A, after the central portion of one film F is folded into a W shape in a side view, FIG. ), The film on the front surface 1 and the film on the back surface 2 face each other.

  And as shown to Fig.3 (a) (b), the right-and-left both sides of the film of the surface 1 and the film of the back surface 2 are each sealed by front view, and the side seal 1S is formed by side view. An inverted Y-shaped package 10 is formed. At this time, the center point of the inverted Y-shaped portion in the side view of the package 10 is set as a branch point Y, and the seal portions composed of two legs of the horizontal seal 1S extending obliquely downward from the branch point Y are respectively branched seal portions. It is called 3S. FIG. 3A is a diagram showing a case of looking up from below, and FIG. 3B is a diagram showing a case of looking down from diagonally above.

  And by filling the contents from the upper opening k of such a package 10, the bottom surface 7 of the package 10 gradually swells due to the weight of the contents, and as shown in FIG. By forming the bottom surface 7 having a planar shape while the film on the bottom surface 7 between the branch seal portions 3S opens downward, the packaging body 10 can be self-supporting as shown in FIG.

  Then, after filling the package 10 with the contents, the upper opening k is sealed to form the upper seal portion 1 s, and a self-supporting package as shown in FIGS. 5 (a) and 5 (b). 10 can be formed. In particular, after filling the contents, the package 10 in which the upper seal portion 1s is formed has the front surface 1, the bottom surface 7 and the back surface 2 smoothly connected in a side view as shown in FIG. A substantially isosceles triangle shape (Δ shape) is formed, and stable independence is possible on the bottom surface 7 (self-standing surface 7) of the isosceles triangle.

  As described above, the packaging body 10 of the present invention is a packaging body 10 having a reverse Y shape in a side view, in which the film F is folded into a W shape in a side view and both left and right sides are sealed in a front view. By filling the contents and forming the upper seal portion 1 s, it is possible to form a Δ shape in a side view and to stand on the bottom surface 7 portion of the Δ shape.

  However, as shown in FIG. 6 (a), in the vicinity of the four branch seal portions 3S on the left and right front and rear portions of the self-standing surface 7 (dotted line circle portions), the film does not fully open, and the contents are not in this portion. It may be stagnant. In particular, as shown in FIG. 6B, when the contents enter a narrow gap near the branch seal 3S and the contents are particulate matter such as powder, the tendency is remarkable. Further, there is a problem that the film in the vicinity of the branch seal 3S interferes and the self-standing surface 7 is difficult to maintain a planar shape.

  Therefore, as shown in FIG. 7 (a), the lower part from the branch point Y of the package 10 is a triangular hypotenuse having a height b (notch height b) and a lateral width c (notch width c). A seal is applied obliquely along the portion (dotted line), and a cutout portion V is formed by cutting away leaving a slight seal width, thereby having a substantially U shape in front view as shown in FIG. 7B. A package 10S is formed.

  As a result, as shown in FIG. 8A, the surface 1, the bottom surface 7 and the back surface 2 are smoothly connected around the branch point Y, and as shown in FIG. Since the film, the film on the bottom surface 7 and the film on the back surface 2 open cleanly to every corner, no narrow gaps are formed, and all the films can be opened well and the contents can be filled to every corner. Therefore, it is possible to take out the contents cleanly without leaving. In particular, when the film on the bottom surface 7 (self-supporting surface 7) is completely opened without receiving the interference of the surrounding film when the notch V is not formed, the bottom surface 7 portion forms a wide planar shape. Thus, the stable packaging body 10 can be independent.

  As described above, the packaging body 10 of the present invention forms the packaging body 10 having a reverse Y shape in the side view, in which the film F is folded into a W shape in the side view and both left and right sides are sealed in the front view. And a package 10S having a U-shape in front view, in which cutout portions formed by obliquely cutting and sealing the left and right sides of the bottom portion 3 in front view are formed, and the package 10S is filled with contents. Thus, it is possible to form a Δ shape in a side view and stably stand on the bottom surface 7 of the Δ shape.

  Moreover, as shown in FIG. 9, the notch height b (B) and notch width c (C) of the notch V formed in the bottom part 3 of such a package 10S are the right and left of the package. It is desirable that the length a (A) connecting the branch points Y is about 1/4, that is, the value of the notch height B is equal to the value of the notch width C, B = C = A When it is / 4, it is possible to stand up most stably while exhibiting high designability.

  However, when the notch width C is C = A / 2, the self-standing surface becomes a one-dimensional line, and it is theoretically difficult to stand the package 10S. Therefore, in order for the free-standing surface 7 to form a two-dimensional planar shape and to be able to stand on its own, the notch width C needs to be larger than A / 2. Further, the maximum value and an appropriate value of the notch height B at this time can be calculated from the correlation described below.

  Table 1 shows that when A = 100 mm, the value of the notch height B is changed to 15, 20, 25 (mm) and the value of the notch width C is 3, 10, 25. It is data indicating a value.

Based on the measured value data in Table 1, the correlation between the notch height B and the notch width C can be approximated in the form of the following linear function. That is, as shown in Table 2 below, first, the natural logarithm of C is taken and the ratio of B and A (B / A) is taken to show a substantially straight line as shown in Table 3 below. At this time, the dispersion V = σ ² = 0.9975, and it can be seen that good linearity is exhibited. (Σ is the standard deviation)

Then, when a primary expression is estimated from Table 3, the following expression 2 is derived. Further, when expressed in the form of y = αx + β (y = lnC, x = B / A), the following expression 3 is obtained.

lnC = 21.533 (B / A) -2.0944 (Expression 2)

y = 21.533x-2.0944 (Formula 3)

  And based on the said Formula 3, as shown in following Table 4, correlation with the length A which connects the right and left branch point Y, the notch height B, the notch width C, and the width | variety D of a self-supporting surface It is possible to seek a relationship. (However, D = A-2C)

Table 4 shows that when the length A connecting the left and right branch points is four types of 100 mm, 120 mm, 160 mm, and 200 mm, the left and right cutout widths C are 1, 5, 10, 20, 25, 30, 40, 50. , 60, 70, 90 (mm), the maximum value of the notch height B is obtained from the above equation 3. Therefore, it is possible to form the package which has the stable self-supporting property by setting it as the value of the notch height B or less. Further, in the linear expression represented by y = αx + β (y = lnC, x = B / A), the values of α and β preferably satisfy 16 <α <26 and 0 <β <5.

  Thus, by taking the correlation between the length A connecting the left and right branch points Y, the notch height B, and the notch width C, the package 10S is easily formed based on the theoretical value. As shown in FIG. 10 (a), compared to the package 10 before the bottom 3 is cut out, the bottom 3 is sealed obliquely based on the theoretical value to form a cut-out package 10S. By doing so, as shown in FIG.10 (b), it is possible to make the self-supporting surface 7 (dotted line part) of a packaging body into a wide planar shape, and it is possible to make the packaging body 10S more self-supporting more stably. is there.

  In addition, as shown in FIG. 11, the package 10S may be formed with a taper T inward, with the left and right side surfaces of the package 10S facing upward in a front view. And it is desirable that the angle θ of the taper T is in the range of 1 to 45 degrees, and as shown in FIGS. 12 (a) and 12 (b), the design has a high design and the center of gravity of the package is downward. And more stable independence is possible. Furthermore, as shown to Fig.13 (a), the opening K above the package 10S becomes thin, and there exists an effect which becomes easy to concentrate the content on one point and to take out.

  Moreover, as shown in FIG.13 (b), you may form separately the extraction part P for pouring out the content above the package 10S, and also it is easy to concentrate the content on one point and to take out. There is an effect. The pouring part P can be easily formed by laminating the film of the front surface 1 and the film of the back surface 2 that are partially protruded, and the pouring port made of another member is not limited to this. You may attach to an opening part. The material of the spout is not particularly limited as long as it is made of a resin having compatibility with the heat-adhesive resin used for the inner layer of the package 10, and may be appropriately selected and used. , Low density polyethylene, medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene, polypropylene, ethylene-α olefin copolymer, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ionomer A resin, a resin formed of one or more resins such as an ethylene-acrylic acid copolymer, an ethylene-methyl acrylate copolymer, and an ethylene-methacrylic acid copolymer can be used.

  Next, the said film F (packaging material) used for the self-supporting packaging body 10 of this invention is demonstrated. First, the material constituting the inner layer of the packaging material may be a layer formed from a heat-adhesive resin that can be melted by heat and welded to each other, and can be appropriately selected depending on the physical properties required for the package 10. For example, low density polyethylene, medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene, polypropylene, ethylene-α olefin copolymer, ethylene-propylene copolymer, ethylene- It can be formed of one or more resins such as vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid copolymer, ethylene-methyl acrylate copolymer, ethylene-methacrylic acid copolymer. .

  Next, as the base material of the packaging material used on the outside of the inner layer, a synthetic resin film having excellent properties in mechanical, physical, chemical and the like can be used. For example, polyester-based, polyamide-based Polypropylene and polyacetal resins can be used. In addition, as a film using these resins, any of an unstretched film or a stretched film stretched in a uniaxial direction or a biaxial direction can be used. It is sufficient that the thickness and the rigidity of the material can be kept to the minimum necessary, and the cost may be determined in consideration of the cost. In addition, a synthetic resin film used as a base material is usually printed on the inner layer side of the synthetic resin film, and is required to be printable, so that it is stretched in a uniaxial direction or a biaxial direction. A stretched film is preferred. Cellophane can be used depending on the physical properties required of the package.

  Further, the packaging material may be provided with an intermediate layer between the inner layer and the base material as necessary in order to impart gas barrier properties such as oxygen gas and water vapor gas and / or light shielding properties. it can. As a material constituting this intermediate layer, for example, a metal foil such as aluminum, iron, copper, tin, or a film such as polyvinyl alcohol, saponified ethylene-vinyl acetate copolymer, polyvinylidene chloride, polyester, Polyamide, polyethylene, polypropylene, polyolefin such as ethylene-propylene copolymer, polyvinyl alcohol film, etc. or inorganic materials such as aluminum, silicon oxide, aluminum oxide, indium oxide, tin oxide, zirconium oxide The film etc. which gave vapor deposition of can be used. The intermediate layer not only provides the above-described gas barrier properties and / or light shielding properties, but also, for example, mechanical toughness, bending resistance, puncture resistance, impact resistance, cold resistance, and heat resistance. A material that can impart functions such as chemical resistance and the above-mentioned gas barrier properties and / or light-shielding properties, such as polyester, polyamide, polyethylene, polypropylene, ethylene-propylene copolymer, etc. You may use in combination with films, such as polyolefin.

  In addition, the above-mentioned base material using a synthetic resin film coated with polyvinylidene chloride or an inorganic vapor deposition layer such as aluminum, silicon oxide, aluminum oxide, indium oxide, tin oxide or zirconium oxide is used. In some cases, the intermediate layer for imparting gas barrier properties and / or light-shielding properties may not be used. However, if necessary, for example, mechanical toughness, bending resistance, puncture resistance, puncture resistance, In order to impart functions such as impact resistance, cold resistance, heat resistance and chemical resistance, for example, a film such as polyester, polyamide, or a film of polyolefin such as polyethylene, polypropylene, ethylene-propylene copolymer or the like. A combination of the above can be used as the intermediate layer.

  The embodiment of the self-supporting packaging body 10 described so far is a representative example of the self-supporting packaging body of the present invention, and the self-supporting packaging body of the present invention is the same. The present invention is not limited to the above, and any category that does not depart from the spirit of the present invention is naturally included in the present invention.

It is a figure which shows an example of the self-supporting package of this invention. (A) It is a figure which shows the case where a package is looked up from the downward direction. (B) It is a figure which shows the case where a package body is seen from the right side surface. (A) (b) It is a figure which shows an example of the formation method of the self-supporting package of this invention. (A) (b) It is a figure which shows an example of the formation method of the self-supporting package of this invention. (A) (b) It is a figure which shows an example at the time of filling the self-supporting packaging body of this invention with the contents. (A) (b) It is a figure which shows the self-supporting packaging body of this invention. It is a figure which shows an example of the self-supporting package of this invention. (A) It is a figure which shows the case where a package is looked up from the downward direction. (B) It is explanatory drawing which shows the example which cut the packaging body partially. It is a figure which shows an example of the self-supporting package of this invention. (A) It is a front view which shows the self-supporting packaging body of this invention. (B) It is a front view which shows an example at the time of forming a notch in the bottom part of the self-supporting packaging body of this invention. It is a figure which shows an example of the self-supporting package of this invention. (A) It is a figure which shows the case where the packaging body in which the notch part was formed looked up from the downward direction. (B) It is explanatory drawing which shows the example which cut | disconnected the package which formed the notch part. It is a front view which shows an example of the package which formed the notch part. (A) It is a figure which shows the case where a package is looked up from the downward direction. (B) It is a figure which shows the case where the packaging body in which the notch part was formed looked up from the downward direction. It is a front view which shows another example of the package body which formed the notch part. (A) (b) It is a figure which shows another example of the package which formed the notch part. (A) It is a figure which shows the time of opening of the package which formed the notch part. (B) It is a figure which shows another example of the package which formed the notch part.

Explanation of symbols

1 Surface 2 Back 3 Bottom 7 Bottom (Self-standing surface)
10 Self-supporting packaging (packaging)
10S Self-supporting packaging (packaging)
1s upper seal part 1S side seal part 3S branch seal part F film Y branch point V notch part k, K opening T taper P extraction part

Claims (6)

  Folding the film into a W shape in a side view and sealing the left and right sides of the film in a front view, and having a reverse Y shape in a side view, filling the package with contents, A self-supporting packaging body characterized in that a Δ shape is formed in a side view by sealing an upper portion of the packaging body, and a bottom surface of the Δ shape forms a substantially planar self-standing surface.   A package body having a U shape in front view, in which a cutout portion formed by obliquely sealing and cutting the left and right sides of the bottom portion of the package body in front view is formed, and the package body is filled with contents, and The self-supporting packaging according to claim 1, wherein a Δ shape is formed in a side view by sealing an upper portion of the packaging body, and a bottom surface of the Δ shape forms a substantially planar self-standing surface. body.   The notch height b and the notch width c of the notch are ¼ of the lateral width a of the package connecting the vertices of the left and right notch heights b. Item 3. A self-supporting package according to Item 2. The self-supporting packaging body according to claim 2, wherein a correlation between a notch height b, a notch width c, and a lateral width a of the packaging body satisfies the following expression (1): .
ln (c) = α (b / a) −β (Formula 1)
(In (c) is the natural logarithm of c, and α and β satisfy 16 <α <26 and 0 <β <5.)   5. The self-supporting packaging body according to claim 1, wherein the packaging body has a taper inwardly with the left and right side surfaces of the packaging body facing upward in a front view.   The self-supporting package according to claim 5, wherein the taper angle is in the range of 1 ° to 45 °.

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