JP4786597B2 - Powder / granular packaging bags - Google Patents

Description

  The present invention relates to a powder / granular packaging bag particularly suitable for putting powder or granular materials among cooking materials and the like in general households and commercial kitchens.

Conventionally, this type of packaging bag is flat when folded, and swells to form a three-dimensional shape when the contents are put. In order to increase the bulge, generally both sides of the bag are used. In many cases, a gusset (so-called lateral gusset) is provided in the case (for example, Patent Document 1). On the other hand, some packaging bags are provided with a male and female bite type chuck in the upper opening, but are often the simplest bags without any gussets. Some of them are provided with a lateral gusset, but in this case, there are many cases where the structure of the upper portion of the gusset and the both ends of the chuck is complicated and the structure is complicated.
JP-A-11-29174

  Many ingredients and seasonings such as wheat flour, tempura flour, sugar, salt, etc. are powdered or granular, and these are mostly transported, stored and used in the above-described packaging bags. . What is expected from these packaging bags is that from the user's point of view, it is easy to use, that is, it has a large effective capacity, it is easy to take out the contents, and it can stand on its own during use. However, there are things that cannot be easily overturned. On the other hand, from the standpoint of the provider, it is advantageous for manufacturing, transportation, storage, and exhibition, and the most important requirement is that the cost is particularly low. For that purpose, the simpler the structure and the cheaper the material of the bag, the better.

  In general households and commercial kitchens, the bag is often used in a state where the bag is leaned against something with the opening up. This is because it is convenient to frequently take the contents in and out of the mouth at the top of the bag. Also, even if you put it in the kitchen drawer, you often put it up diagonally with your mouth up. This is because it is convenient to put and remove the bag from the drawer. In addition, when it is displayed at a store such as a supermarket, it is better to stand up.

  For this reason, among the packaging bags, there is a self-supporting bag having a lateral gusset on both side surfaces and a square bottom surface as a large effective capacity. However, when a chuck is mounted on the chuck, the upper end of the lateral gusset collides with both ends of the chuck. Therefore, to avoid this, the chuck must be shortened. Therefore, the length of the opening is inevitably shortened and the contents are difficult to be taken out.

  On the other hand, there are similar packages that can stand on their own as containers for refilling liquids such as soap solution and detergent, but many are made of harder and slightly thicker material so that the shape of the bottom does not collapse. However, since the mouth is once opened, its contents can be transferred to another container almost once, so the take-out mouth can be small and completely closed to keep the contents sealed. . Therefore, in use, most of the bag (container) is cut out with scissors or the like to create an outlet that does not close again. Of course, the contents are often removed, and each time the outlet is closed and sealed and stored, there is no contrivance, so it is often suitable to contain cooking ingredients that need to be repeatedly opened and sealed. is not.

In order to solve this problem, the applicant has already used an inexpensive material with a simple structure,
In addition, the opening is large so that powdered or granular materials can be easily taken in and out, and the items remaining during use can be sealed and stored, and can be placed independently in any state. Proposes good powder / granular packaging bags.

  FIG. 7 is a perspective view showing an embodiment of a powder / granular packaging bag proposed by the present applicant. The bottom gusset 2 is flat and the top opening 10 is shown open. FIG. 8 is a plan view showing the packaging bag of FIG. 7 in a folded state. 9 is an enlarged cross-sectional view of a part of the end surface of the packaging bag of FIG. 7 cut along XX of FIG.

  As shown in FIGS. 7-9, this packaging bag consists of the front film 1a, the rear film 1b, and the bottom film 2a. A cylindrical body 1 is formed by the front film 1a and the rear film 1b. A bottom 2 following the body 1 has a gusset shape and is formed of a bottom film 2a. For these films 1a, 1b, and 2a, films having a thickness of about 40 to 100 μm are used, and antistatic treatment (antistatic treatment) is performed.

  The front film 1a and the rear film 1b have the same shape, and are inclined symmetrically (V-cut) so that the width decreases toward the lower part at both lower ends of the rectangle. The front film 1a and the rear film 1b are overlapped in the front-rear direction, and both end portions parallel to the left and right are melt-fixed by thermocompression processing. 11a is a left side fixing part and 11b is a right side fixing part.

  The bottom film 2a is extended to a shape in which the bottom of the triangle is connected to the left and right sides of a square (or a rectangle close to a square) to form a tortoiseshell shape. The bottom film 2a has a center line in the longitudinal direction as a ridge line 2b (shown by a dotted line in FIG. 7 and a solid line in FIG. 8), is folded into a boat shape (see FIG. 8), and the periphery is a front film. 1a and the rear film 1b are melt-bonded to the lower end portions of the rear film 1b (a portion parallel to the upper edge serving as an opening and a pair of opposing inclined portions) by thermocompression bonding.

  12a is a fixing portion between the front film 1a and the bottom film 2a, and 12b is a fixing portion between the rear film 1b and the bottom film 2a. Since these adhering portions 12a and 12b are heat-sealed, they have sufficient strength to hold a weight of 500 g to 1 kg. The width of the heat seal (indicated by w in FIG. 8) varies depending on the weight of the contents 5 to be put in the bag and is considered to be within a range of 1 to 20 mm, but in general, it may be several mm.

  In this example, the thermocompression bonding of the left and right fixing portions 11a and 11b of the body 1 and the fixing portions 12a and 12b of the body 1 and the bottom 2 ensures a sufficient strength against the internal pressure when the contents 5 are inserted. Therefore, heat sealing is performed by pressing with sufficient heat and pressure.

  FIG. 10 is a perspective view showing a state in which the contents 5 such as flour are put in a bag and the chuck 3 is closed. In this state, the triangle-shaped part of the turtle shell shape of the bottom 2 rises and becomes a slope, so that a substantially square part (or a rectangle close to a square) within the range indicated by the two-dot chain line B in FIG. It will touch the surface on which the bag is placed. Therefore, as long as the center of gravity of the entire bag including the contents 5 is within the range above the two-dot chain line B, even if the contents 5 are shaken by an impact from the outside, the bag will not fall down.

  In order to put the contents 5 in and out of the bag, the upper part is opened without sticking. In order to seal the opening 10 so as not to be affected by the external environment, such as the contents 5 once put out in the vicinity of the upper opening 10 or due to the outside of the air. A mold chuck 3 is provided. As shown in detail in FIG. 7 or FIG. 9, the chuck 3 is constituted by a pair of chuck seals 3a and 3b. The chuck seals 3a and 3b are fixed to the opposing inner surfaces of the front film 1a and the bottom film 2, respectively.

  This proposed packaging bag has a chuck in the opening at the upper end of the trunk, and a gusset is provided at the bottom so that it can become self-supporting when it becomes a three-dimensional shape by inserting its contents. All can be solved. (1) Simple structure does not cost production and helps to reduce the cost of products. (2) Large opening and filling time for powdery or granular products can be shortened. In addition, it is easy to take out and put in the filled item, (3) Since the bottom is flat, a lot of items to be filled enter, (4) the item remaining in use can be sealed and stored, and ( 5) There are effects such as being able to stand independently in that state. However, as shown in FIG. 10, the opening becomes wide, but the opening has to be widened, so that the box has to be folded, for example, and the work efficiency is poor.

  An object of the present invention is to provide a powder / granular packaging bag having an improved appearance and improved boxing workability.

を特徴とする粉・粒状体の包装体である。 The invention of claim 1 is flat in the folded state, swells into a three-dimensional shape in a state where a powdery or granular object is put, and has a cylindrical body part and a bottom part connected to the lower end of the body part. It is formed of a film, and has an opening at the upper end of the barrel, and is provided with a male and female bite type chuck for sealing the bag near the opening, and the barrel is connected to the bottom in a folded state. A straight body portion, a shoulder portion connected to the straight body portion and narrowed to the opening side, and a neck portion connected to the shoulder portion and serving as the opening portion, and can be self-supporting in the three-dimensional shape. Thus, only the bottom is a gusset-shaped powder / granular package, wherein the width a of the opening is the width of the boundary line between the body and the bottom in the folded state b , The height of the bottom is c, and the width of the square shape of the bottom is When the b-2c), given by: (1)
a = K (b-2c) (1)
However, K = 0.8-2.0,
When the upper end of the shoulder portion is a powder / grain surface and the height from the bottom of the folded state to the upper end of the straight body portion is d, the bulk density is ρ, and the filling amount is X, the folded state The height e from the base to the upper end of the shoulder is given by the following equation (3):

This is a powder / granular package.

を特徴とする粉・粒状体の包装体である。 The invention according to claim 2 is flat in the folded state, swells into a three-dimensional shape in a state where a powdery or granular object is put, and has a cylindrical body part and a bottom part connected to the lower end of the body part. It is formed of a film, and has an opening at the upper end of the barrel, and is provided with a male and female bite type chuck for sealing the bag near the opening, and the barrel is connected to the bottom in a folded state. And a shoulder portion that is squeezed to the opening portion side, a neck portion that is connected to the shoulder portion and serves as the opening portion, and a powder in which only the bottom portion is in a gusset shape so that it can stand on its own in a three-dimensional shape A granular package, wherein the width of the opening is narrower than the width of the boundary between the trunk and the bottom in the folded state, and the width a of the opening is the folded Width of the boundary between the trunk and the bottom in a state b, and the height of the bottom as c, when the width of the square shape of the bottom and (b-2c), it is given by the following equation (1),
a = K (b-2c) (1)
However, K = 0.8-2.0,
When the dimensions of the a, b, and c are determined, the upper end of the shoulder is a powder / grain surface, the bulk density is ρ, and the filling amount is X, the upper end of the shoulder from the folded bottom The height e is given by the following equation (3):

This is a powder / granular package.

を特徴とする粉・粒状体の包装体である。 The invention of claim 3 is flat in a folded state, swells into a three-dimensional shape in a state where a powdery or granular object is put, and has a cylindrical body part and a bottom part connected to the lower end of the body part. It is formed of a film, and has an opening at the upper end of the barrel, and is provided with a male and female bite type chuck for sealing the bag near the opening, and the barrel is connected to the bottom in a folded state. A straight body portion, a shoulder portion that is connected to the straight body portion and is squeezed to the opening side and becomes the opening portion, and only the bottom portion has a gusset shape so that the three-dimensional shape can stand independently. The powder / granular packaging body, wherein the width of the opening is narrower than the width of the boundary between the body and the bottom in the folded state, and the width a of the opening is , Of the boundary line between the trunk and the bottom in the folded state Width b, and height of the bottom as c, when the width of the square shape of the bottom and (b-2c), it is given by the following equation (1),
a = K (b-2c) (1)
However, K = 0.8-2.0,
When the dimensions of the a, b, and c are determined, and the upper end of the straight body portion is a powder / grain surface, the bulk density is ρ, and the filling amount is X, the straight body portion starts from the bottom of the folded state. The height d to the upper end of is given by the following equation (2):

This is a powder / granular package.

  ADVANTAGE OF THE INVENTION According to this invention, the external appearance is improved and the packaging bag of the powder and the granular material which improved the workability | operativity of boxing is provided.

  Hereinafter, the present invention will be described in more detail with reference to the drawings and the like. In addition, since each embodiment shown below has the same basic structure as the packaging bag of FIGS. 7-10 mentioned above, the part which performs the same function attaches | subjects the same code | symbol, and overlaps description Are omitted as appropriate.

(First embodiment)
FIG. 1 is a view showing a first embodiment of a powder / granular packaging bag according to the present invention. The packaging bag 101 according to the first embodiment has a configuration in which the body 1A is connected to the bottom 2 and is narrowed and narrowed toward the opening 10 to become the opening 10. As shown in FIG. 1A, when the width of the bottom 2 is b and the height c of the bottom 2 in a state where the packaging bag 101 is folded, the square bottom B of the bottom 2 is shown in FIG. As shown, (b-2c) × 2c. Note that the V-cut angle θ of the bottom 2 at this time is arbitrary.

Here, a ratio K between the dimension a of the opening 10 given by the following equation and the width (b-2c) of the square bottom B is considered. Hereinafter, all dimensions depend on internal dimensions.
a / (b-2c) = K When the inventors put the contents 5 such as powder, the dimension a of the opening portion 10 of the packaging bag 101 is equal to the width (b-2c) of the square bottom B. As a result of various investigations of the substantially same range, it was found that K = 0.8 to 2.0 is preferable, and 1.0 to 1.8 is more preferable. When the above equation is transformed, a = K (b-2c) (1)
Therefore, it is preferable that the width a of the opening portion 10 is 0.8 to 2.0 times the width (b-2c) of the square bottom portion B because the opening portion 10 of the packaging bag 101 does not widen. It turned out to be a range.

  According to the first embodiment, since the ratio of the width of the opening portion 10 and the width of the square bottom portion B is set within a predetermined range, the opening portion 10 of the packaging bag 101 does not spread, the appearance is improved, and the workability of boxing is improved. Has the effect of improving.

(Second Embodiment)
FIG. 2 is a view showing a second embodiment of the powder / granular packaging bag according to the present invention. As shown in FIG. 1 (B), the portion of the upper space C needs to have some margin with respect to the powder surface A. Therefore, in the packaging bag 101 of the first embodiment, the mouth of the opening portion 10 is It becomes narrower. That is, since the upper space C becomes longer, the width of the dimension a of the opening 10 becomes shorter accordingly. Therefore, the packaging bag 102 of the second embodiment is an improvement of this point. The upper space C is provided to prevent the powder from popping out at the time of opening, to prevent the powder from popping out when the lid is closed after filling, and to prevent the packaging bag from becoming dirty when the powder overflows. Yes.

a, b, when the size of c is determined, the height d from the base state to the upper end D of the cylindrical body portion 1B-1 folded, squeezed from the bottom of the folded portion (shoulder portion) 1B- When the height e is 2 to the upper end E, the dimensions d and e are determined as follows according to the powder surface A at the time of filling.

  When the dimensions of a, b, and c are determined, when the height d to the upper end D of the straight body portion 1B-1 and the height e to the upper end E of the throttle portion 1B-2, Depending on the powder surface A, the dimensions d and e are determined as follows.

  (1) When the powder surface A at the time of filling is up to the upper end D of the straight body portion 1B-1, if the filling amount of the contents 5 of the powder / granulate is X [g] and the bulk density ρ [g / cm 3], The height d of the upper end D of the straight body portion 1B-1 is given by the following equation (2).

  Here, since the bulk density ρ of the granular material is not constant, the height d is calculated by the coefficient α = 1, the general bulk density ρ, the actual filling state (bulk density, appearance, etc.), Considering the swelling, the coefficient α is determined, and the final d is determined.

  (2) When the powder surface A at the time of filling is up to the upper end E of the squeezed portion 1B-2 When the filling amount of the content 5 of the granular material is X [g] and the bulk density ρ [g / cm 3], The height e of the upper end E of 1B-2 is given by the following equation (3).

  Again, since the bulk density ρ of the granular material is not constant, the height α is calculated by the coefficient α = 1, the general bulk density ρ, the actual filling situation (bulk density, appearance, etc.), The coefficient α was determined in consideration of the swelling, and the final e was determined. Assuming that the powder surface A at the time of filling is up to the upper end E of the squeezed portion 1B-2 and that the flour 1 [kg] and the tempura powder 700 [g] are filled, the following production examples 1 and 2 are produced. did. 5 and 6 are views showing Production Examples 1 and 2 of powder / granular packaging bags according to the present invention.

[Production Example 1] When a = 14.0 cm, b = 18 cm, c = 3.5 cm, d = 16 cm, X = 1000 g, bulk density = 0.65 g / cm 3, and α = 1, e = 21. Although calculated as 6 cm, e = 19 cm (α = 0.88) was determined to be optimal depending on the actual filling condition.

  [Production Example 2] When a = 14.0 cm, b = 15.8 cm, c = 3.3 cm, d = 13.3 cm, X = 700 g, bulk density = 0.65 g / cm 3, α = 1, Although e = 21.6 cm is calculated, e = 19 cm (α = 0.88) was determined to be optimal depending on the actual filling condition.

  In the case of the second embodiment, in addition to the effects of the first embodiment, the portion of the upper space C can be given a certain margin with respect to the powder surface A, the mouth of the opening portion 10 is not narrowed, and there is a margin There is an effect that can be given.

(Third embodiment)
FIG. 3 is a view showing a third embodiment of the powder / granular packaging bag according to the present invention. The package 103 according to the third embodiment is connected to the shoulder 1C-2 and the shoulder 1C-2 in which the body 1C is connected to the bottom 2 and squeezed to the opening 10 in the folded state of FIG. And a shape including a neck portion 1 </ b> C- 3 that becomes the opening 10. Since this packaging bag 103 corresponds to the case of d = c in the packaging bag 102 [in the case of (2)] of the second embodiment, detailed description is omitted.

  The packaging bag 102 of the second embodiment may appear to be square in the portion D, but the packaging bag 103 of the third embodiment has a good appearance because it is absent.

(Fourth embodiment)
FIG. 4 is a view showing a fourth embodiment of the powder / granular packaging bag according to the present invention. The packaging bag 104 of the fourth embodiment is a case where the dimension e of the packaging bag 102 of the second embodiment is the height of the bag. In the folded state of FIG. 4A, the packaging body 104 has a trunk 1D connected to the bottom body 1D-1 connected to the bottom 2 and the straight body section 1D-1, and is narrowed to the opening 10 side. It is a form provided with shoulder part 1D-2 used as opening part 10. FIG.

In this case, the angle δ at which the upper portion D of the straight body portion 1D-1 is squeezed is a / (b-2c) = 1 (or 0.8).
It is preferable to determine not to fall below.

The packaging bag 104 of the fourth embodiment can take a larger filling amount than the packaging bag 101 and the packaging bag 103 at the same bag height. Further, the mouth of the mouth is gentler than the packaging bag 102, the corner of the upper end D is not conspicuous, and the appearance is good.
(Deformation)
The present invention is not limited to the embodiment described above, and various modifications and changes are possible, and these are also within the scope of the present invention.
(1) In this embodiment, both sides of the two films on which the body 1 is overlapped are melted, but the films are bonded together, and the adhesive strength between the films and the bulk and weight of the contents put in the bag are combined. Practical use can be sufficiently achieved by taking into account such factors. In the case of fusing, if it is not a heavy object, the adhesive width may be about 0.1 to 1.0 mm, so that the packaging material may be small and the appearance is good.

(2) In this case, if both sides are melted in a V shape in the state shown in FIGS. 1 to 4, the folded portion at the bottom is also bonded. In such a case, it is only necessary to perform a fusion preventing process for preventing the folded portions at the bottom from fusing each other. This portion may be heat-sealed with a certain width w to ensure the fixing of the adhesive portion.

(3) The film may be a single layer or multiple layers. In the case of a single layer, there is an advantage that it can be recycled at low cost. In the case of a multilayer, the strength increases and the backside printing can be performed, so the appearance is clean. Increase design freedom.

(4) In FIGS. 1 to 4, the example in which the bottom portion is cut into a V shape has been described. However, the bottom portion may be sealed into a V shape without being cut. In this way, when the contents are inserted, as shown in FIG. 10, the portions floating on the substantially triangular shapes on both sides of the bottom cannot be seen, and the appearance is further improved.

It is a figure which shows 1st Embodiment of the packaging bag of the powder and the granular material by this invention. It is a figure which shows 2nd Embodiment of the packaging bag of the powder and the granular material by this invention. It is a figure which shows 3rd Embodiment of the packaging bag of the powder and the granular material by this invention. It is a figure which shows 4th Embodiment of the packaging bag of the powder and the granular material by this invention. It is the figure which showed the manufacture example 1 of the packaging bag of the powder and the granular material by this invention. It is the figure which showed the manufacture example 2 of the packaging bag of the powder and the granular material by this invention. It is a perspective view which shows the basic composition of the packaging bag of the powder and the granular material by this invention. It is a top view which shows the basic structure of the packaging bag of FIG. 7 in the folded state. It is sectional drawing which cut | disconnected the basic composition of the packaging bag of FIG. 7, and expanded and showed a part. It is a perspective view which shows the state which put the thing in the packaging bag of the basic composition of FIG. 7, and closed the chuck | zipper.

Explanation of symbols

101-104 Packaging bag 1 Body 1a Front film 1b Rear film 2 Bottom (Gazette)
2a Bottom film 3 Chuck 3a, 3b Chuck seal 10 Opening 11a, 11b, 12a, 12b Adhering part

Claims (3)

In the folded state, it is flat, and in a state where powdery or granular materials are placed, it swells into a three-dimensional shape. There is an opening at the upper end of the part, and a male and female bite type chuck for sealing the bag in the vicinity of the opening,
The body portion is in a folded state, a straight body portion connected to the bottom portion, a shoulder portion connected to the straight body portion and narrowed to the opening side, and a neck portion connected to the shoulder portion and serving as the opening portion And
A powder / granular package in which only the bottom is in a gusset shape so that it can stand on its own in the state of the three-dimensional shape,
The width a of the opening is defined as the width of the rectangular shape of the bottom (b-2c), where b is the width of the boundary between the body and the bottom in the folded state, and c is the height of the bottom. ) Is given by the following equation (1),
a = K (b-2c) (1)
However, K = 0.8-2.0,
When the upper end of the shoulder portion is a powder / grain surface and the height from the bottom of the folded state to the upper end of the straight body portion is d, the bulk density is ρ, and the filling amount is X, the folded state The height e from the base to the upper end of the shoulder is given by the following equation (3):

A package of powder and granules characterized by In the folded state, it is flat, and in a state where powdery or granular materials are placed, it swells into a three-dimensional shape, and a cylindrical body part and a bottom part connected to the lower end of the body part are formed of a film. There is an opening at the upper end of the part, and a male and female bite type chuck for sealing the bag in the vicinity of the opening,
The body portion includes, in a folded state, a shoulder portion connected to the bottom portion and narrowed to the opening side, and a neck portion connected to the shoulder portion and serving as the opening portion,
A powder / granular package in which only the bottom is in a gusset shape so that it can stand on its own in the state of the three-dimensional shape,
The width of the opening is narrower than the width of the boundary between the trunk and the bottom in the folded state,
The width a of the opening is defined as the width of the rectangular shape of the bottom (b-2c), where b is the width of the boundary between the body and the bottom in the folded state, and c is the height of the bottom. ) Is given by the following equation (1),
a = K (b-2c) (1)
However, K = 0.8-2.0,
When the dimensions of the a, b, and c are determined, the upper end of the shoulder is a powder / grain surface, the bulk density is ρ, and the filling amount is X, the upper end of the shoulder from the folded bottom The height e is up to the following formula (3)
Given in the

A package of powder and granules characterized by In the folded state, it is flat, and in a state where powdery or granular materials are placed, it swells into a three-dimensional shape. There is an opening at the upper end of the part, and a male and female bite type chuck for sealing the bag in the vicinity of the opening,
The body portion includes a straight body portion that is connected to the bottom portion in a folded state, and a shoulder portion that is connected to the straight body portion and is squeezed to the opening portion side to become the opening portion,
It is a powder / granular package in which only the bottom is in a gusset shape so that it can stand on its own in a three-dimensional shape, and the width of the opening is the same as the trunk in the folded state. Narrower than the width of the bottom boundary line,
The width a of the opening is defined as the width of the rectangular shape of the bottom (b-2c), where b is the width of the boundary between the body and the bottom in the folded state, and c is the height of the bottom. ) Is given by the following equation (1),
a = K (b-2c) (1)
However, K = 0.8-2.0,
When the dimensions of the a, b, and c are determined, and the upper end of the straight body portion is a powder / grain surface, the bulk density is ρ, and the filling amount is X, the straight body portion starts from the bottom of the folded state. The height d to the upper end of is given by the following equation (2):

A package of powder and granules characterized by

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