JP3191805U - Packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag having excellent cushioning property, which can prevent articles of various shapes from being scratched by impact or rubbing and can efficiently wrap articles. SOLUTION: In a packaging bag 1 in which an outer bag 10 having elasticity and flexibility and an inner bag 20 are overlapped inside and outside, the outer bag 10 has a rigidity equal to or less than that of the inner bag 20, and the inner bag 20 has a rigidity equal to or less than that of the inner bag 20. It is made of a sheet having flexibility equal to or less than that of the outer bag 10. The outer bag 10 has a hollow portion formed on the peripheral wall surface and has a large number of outer protrusions protruding outward, and the inner bag 20 has a hollow portion formed on the peripheral wall surface and has an inner side. It has a large number of inner protrusions protruding into the bag, and the hollow portion of the outer protrusion and the hollow portion of the inner protrusion are aligned. [Selection diagram] Fig. 1

Description

  The present invention relates to a packaging bag that can prevent an article of various shapes from being scratched by impact or rubbing and has excellent cushioning properties so that the article can be efficiently packaged.

When storing and carrying products that are susceptible to scratches or products that are susceptible to scratches on the surface, such as products that are vulnerable to impacts, conventional packaging materials for polyethylene foam cushioning materials that have a large number of cells are used. Used for packaging.
For example, in the packaging material of Japanese Utility Model Laid-Open No. 5-40146, an outer bag is formed of a material having a cushion function, an inner bag is formed inside the outer bag, and the outer bag and the inner bag are on both sides. A packaging bag that has been fastened together has been proposed.
However, in the above configuration, since the inner bag does not have a cushion function, the outer bag and the inner bag are separated so that the cushion function cannot be fully utilized, and the shape of the product is uneven. There was a problem that the product could not be packaged following the outer peripheral surface of the product.

Japanese Utility Model Publication No. 5-40146

  This invention has been created in view of the above circumstances, and its main problems are to improve cushioning properties and to store and hold products regardless of the shape of the products to be stored. It is providing the packaging bag which can improve cosmetics.

In order to achieve the above object, the present invention provides a device according to claim 1,
In a packaging bag in which an outer bag and an inner bag having elasticity and flexibility are overlapped on the inside and outside,
The outer bag has a rigidity equal to or less than that of the inner bag, and the inner bag is made of a sheet having a flexibility equal to or less than that of the outer bag,
The outer bag has a large number of outer protrusions formed on the peripheral wall surface and having a hollow portion protruding outward.
The inner bag is formed on the peripheral wall surface, and has a plurality of inner protrusions projecting inward with a hollow part,
The hollow portion of the outer protrusion and the hollow portion of the inner protrusion are aligned.
In the device of claim 2,
The outer protrusion consists of a hollow protrusion that protrudes outward from the reference surface of the outer bag,
The inner protrusion consists of a hollow protrusion that protrudes inward from the reference surface of the inner bag,
The base ridge line formed between the outer protrusion and the reference surface of the outer bag matches the base ridge line formed between the inner protrusion and the reference surface of the inner bag, or the base of the outer protrusion. One or a plurality of base ridge lines of the inner protrusion are included in the range of the ridge line.
In the device of claim 3,
The side forming the base ridge line of the outer protrusion matches the side of the base ridge line of the outer protrusion adjacent to the outer protrusion,
The coincident sides continuously extend in a straight line shape or a curved shape to form a ruled line for bending.
In the device of claim 4,
The outer bag and inner bag have a flat surface in the vicinity of the opening on the peripheral wall, the part where the outer and inner protrusions are formed is folded back at the bottom, and the left and right edges of the peripheral wall are integrated. It is welded.
In the device of claim 5,
The outer bag has a rigidity equal to or less than that of the inner bag, and the inner bag is made of a sheet having a flexibility equal to or less than that of the outer bag.

The packaging bag of the present invention has a double structure of an inner bag and an outer bag, and an inner protrusion is formed on the inner bag and an outer protrusion is formed on the outer bag. The front end of the inner protrusion can be directly contacted and buffered with respect to the article, and the outer protrusion and the inner protrusion can cooperate with each other to buffer the impact against the external impact.
That is, the inner protrusion can be bent and fitted into the hollow portion of the outer protrusion, and the outer protrusion can be bent and fitted into the hollow portion of the inner protrusion. , The buffer effect can be enhanced.
Further, the stored article can be flexibly protected by increasing the strength of the outer protrusion so as to cope with a large external impact and allowing the inner protrusion to have flexibility.

1 is a perspective view of a packaging bag of Example 1. FIG. It is the same top view. It is the principal part sectional drawing. It is a perspective view of the packaging bag of Example 2. FIG. It is the same top view. It is a perspective view which shows the manufacture procedure of a packaging bag, Comprising: (a) is the state before overlapping the sheet | seat for outer bags, and the sheet | seat for inner bags, (b) is the state folded in half at the center, (c) is an edge part. The welded state, (d) shows a state where the center of the welded portion is cut to form a packaging bag. It is a fragmentary sectional view which shows the state which the outer protrusion and the inner protrusion bent. 6 is a perspective view of a packaging bag of Example 3. FIG.

Embodiments of the packaging bag according to the present invention will be described below with reference to the drawings.
A packaging bag 1 shown in FIGS. 1 to 3 is composed of an outer bag 10 and an inner bag 20 in which left and right edges are fixed integrally. The outer bag 10 has a hollow portion S1 and protrudes outward. The inner bag 20 is formed with a plurality of inner protrusions 21 having a hollow portion S2 and protruding inward.
And when the inner protrusion 21 of the inner bag 20 and the outer protrusion 11 of the outer bag 10 each bend in the direction opposite to the protruding direction, the opposing outer protrusion 11 or inner protrusion 21 It fits in the hollow portion S2 while being bent, so that the shock can be buffered (see FIGS. 3 and 7).

In this embodiment, the outer bag 10 and the inner bag 20 are made of a synthetic resin sheet, the outer bag 10 is made of a material that is more rigid than the inner bag 20, and the inner bag 20 is more flexible than the outer bag 10. Made of material.
Further, for example, the outer bag 10 may be thick and the inner bag 20 may be thin even with the same synthetic resin.
In the present invention, the material is not particularly limited. For example, the outer bag 10 and the inner bag 20 may use the same material in rigidity and flexibility.
Further, for example, a laminated sheet in which functional layers are laminated, a synthetic sheet, or the like may be used. In short, any known material that has elasticity and flexibility and can form protrusions may be used.

The outer bag 10 and the inner bag 20 are overlapped with the inner bag 20 aligned with the inner surface of the outer bag 10, and the edges are integrally welded or bonded to form the packaging bag 1 (in the manufacturing method of Example 2 in FIG. 6). According).
The outer bag 10 and the inner bag 20 are not two independent bags but a double bag that is integrally sealed at the left and right edges.

  In the illustrated example, the shape of the bag of the packaging bag 1 is a side seal bag (a sheet is folded in half and the folded portion is a bottom portion and both left and right edges are sealed). However, a bottom seal bag, a three-side seal bag, a pillow It can be applied to known shapes such as bags, gusset bags, standing pouch bags, and the like.

The outer bag 10 and the inner bag 20 are respectively formed with an outer protrusion 11 on the former and an inner protrusion 21 on the latter.
The outer protruding portion 11 of the outer bag 10 is a protruding portion having a bottomless hollow portion S1 protruding outward from the base surface B1 serving as a reference surface of the outer bag 10, and in this embodiment is formed of a triangular pyramid. ing.
A base ridgeline 16 as a ridgeline is formed between the outer protrusion 11 and the base surface B1.
The base ridge line 16 may have an arbitrary shape, but in the illustrated example, is formed of an isosceles triangle.

The base ridge line 16 of the present embodiment is arranged so as to be in common with the base ridge line 16 of the outer protrusion 11 adjacent to the periphery of the outer protrusion 11.
In other words, the large number of outer protrusions 11 are bent ruled lines in which each ridge line portion of the base ridge line 16 is continuous between the large number of protrusions.

The base ridgeline 16 is formed of an isosceles triangle, and the base 16c of the isosceles triangle is a vertical axis, and the laterally adjacent outer protrusions 11 are arranged symmetrically about the vertical axis so that the base ridge line 16 is continuous without a gap. The vertices of the isosceles triangle are arranged so as to be symmetric with respect to the vertical axis in contact with the vertex, and the vertical axis is a ruled line L10 for bending extending vertically in the vertical direction. A plurality are formed.
If the base 16c of the isosceles triangle is arranged so as to be on the horizontal axis (tilted by 90 degrees), a folding ruled line (not shown) extending horizontally instead of the vertically extending folding ruled line L10 is provided. It can also be.

  At the same time, the outer protrusions 11 adjacent to each other in the upper and lower sides are one of the hypotenuses 16 a of the isosceles triangle of one outer protrusion 11 and the other (or one) of the other isosceles triangle of the other outer protrusion 11. An inclined axis that descends from right to left by matching the hypotenuse 16b and an inclined axis that descends from left to right. L11 and L12 are set.

  By aligning the base ridgelines 16a to 16c of the large number of outer protrusions 11 in this way, the folding ruled lines L10, L11, and L12 that extend continuously in the vertical (or horizontal) and diagonal directions are formed in the outer bag 10. Therefore, even if a relatively rigid material is used as the material of the outer bag 10, the outer bag 10 can be bent corresponding to the article to be stored.

The inner protrusion 21 of the inner bag 20 has a shape similar to that of the inner protrusion 21, and is a bottomless protrusion that protrudes inward from the base surface B2 serving as a reference of the inner bag 20 and has a hollow portion S2. It has become.
Therefore, between the outer protrusion 11 and the inner protrusion 21, the hollow portions S1 and S2 are connected to form a large hollow.
The inner protrusion 21 is formed in a shape that can be fitted into the hollow portion S1 of the outer protrusion 11 when bent.
In this embodiment, it has the same triangular pyramid shape as the outer protrusion 11 of the outer bag 10.
Therefore, the outer protrusion 11 can also be fitted into the hollow portion S2 of the inner protrusion 21 when bent inward.

In this device, if the base ridge line 26 of the inner protrusion 21 is aligned with the base ridge line 16 of the outer bag 10, the protruding shape may be any shape such as other pyramids or cones. It may be a shape that can be fitted to.
Alternatively, a plurality of inner protrusions 21 may be included within the range of the base ridge line 16 of the outer protrusion 11.
Since the inner bag 20 touches the article G stored in the packaging bag 1, a material that is more flexible than the outer bag 10 can be used to hold the inner bag 20 flexibly.
And since the inner protrusion 21 of the inner bag 20 is positioned so as to be aligned with the hollow portion S1 of the outer protrusion 11 of the outer bag 10, the edges of the inner bag 20 and the outer bag 10 are bonded together. It is fixed by welding or fixing.

As a result, the article stored inside the packaging bag 1, that is, inside the inner bag 20 is in contact with the inner bag 20, but is protected by being surrounded by the flexible material of the inner bag 20 via the inner protrusion 21. At the same time, the impact from the outside can be buffered by the rigid outer protrusion 11 of the outer bag 10.
Further, since the outer bag 10 can be largely bent along the folding ruled lines L10, L11, and L12 according to the shape of the article, not only the elasticity of the outer protrusion 11 of the outer bag 10 but also the article G The buffer function can be effectively exerted by the deformation following the shape.

The thus formed packaging bag 1 has a flat portion 3 (a flat portion 13 of the outer bag and a flat portion 23 of the inner bag) at the periphery of the opening 5 at the upper end. The protrusions 11 and 21 are formed without a gap.
By providing the flat portion 3, the flexibility of the flat surfaces 13 and 23 of the outer bag 10 and the inner bag 20 is increased, and the opening 5 of the packaging bag 1 is tightened and sealed with a fastener such as a string or a ribbon. Can be stopped.

In the first embodiment, the base ridgelines 16 and 26 are isosceles triangles in plan view, but may be any geometric shape such as a square, a rectangle, or a circle.
4 and 5 show an example in which the outer protrusion 11 of the outer bag 10 is a quadrangular pyramid. In this case, the outer protrusions 11 are arranged vertically and horizontally without any gaps, and a grid-like base ridge line 16 is shown. As a result, the vertical axis continuous in the extending direction and the horizontal axis extend vertically, and the bending ruled line L10 extending vertically and the folding ruled line L13 extending horizontally are formed in parallel.
Similarly, the inner protrusion 21 of the inner bag 20 protrudes inward as a quadrangular pyramid.
Since other configurations are the same as those in the above embodiment, the description thereof is omitted.

The packaging bag 1 of Example 3 shown in FIG. 8 has outer protrusions 11 that are substantially elliptical protrusions that protrude outward and are arranged vertically and horizontally, and have different shapes in a staggered arrangement between the outer protrusions 11. A slightly smaller substantially elliptical outer protrusion 11 ′ is formed.
Although not shown in the figure, the inner protrusion is provided inwardly corresponding to the outer protrusions 11 and 11 ′.
Since other configurations are the same as those in the above embodiment, the description thereof is omitted.

In addition, the packaging bag 1 of the said Example can be manufactured using a well-known manufacturing method.
An example of the packaging bag 1 of Example 2 will be described with reference to FIG. 6. A rectangular sheet 10 ′ serving as a blank for the outer bag 10 and a rectangular sheet 20 ′ serving as a blank for the inner bag 20 are represented by the outer protrusion 11. The inner protrusions 21 are overlapped so as to be fitted to each other (see FIG. 5A).
Here, in each sheet 10 ′, 20 ′, a predetermined number of outer protrusions 11, a group of inner protrusions 21, and a flat edge forming part 4 ′ formed between the protrusions, Flat portions 13 and 23 formed before and after the group of protrusions are formed.

The entire sheet 10 ', 20' is bent from substantially the center so that the sheet 10 'serving as the outer bag 10 is on the outside (see FIG. 5B).
And it cut | disconnects with the electrothermal type or high frequency type cutting device etc. along the edge part formation part 4 'of this sheet | seat 10' and 20 'folded in half (refer the figure (c)).

At that time, in the cutting step, the sheet is cut and the cut surface is welded by heat to form the right and left edges 4 of the bag, and at the same time, the upper ends are opened to open the outer bag 10 and the inner bag 20. 5 is automatically formed.
And the said outer bag 10 and the said inner bag 20 are fastened together, and the some packaging bag 1 can be simply made from a set of sheet | seat bodies (refer the figure (d)).

In addition, cosmetics can be improved by changing the color of the outer bag 10 and the inner bag 20.
For example, the outer bag 10 may be a transparent or translucent color, and the inner bag 20 may be a translucent color or an opaque chromatic color that can be seen through the outer bag 10.
In the present embodiment, one inner bag 20 is provided inside the outer bag 10, but multiple inner bags may be provided.

In the above-described embodiment, the case where the outer protrusions and the inner protrusions are continued without gaps is illustrated, but the outer protrusions and the inner protrusions may be arranged in the form of dots.
Even in this case, the outer protrusion and the inner protrusion may be configured so that the respective hollow portions are aligned and communicate with each other.
Moreover, you may add well-known structures, such as the structure which provides the opening sealing means by the streaky unevenness | corrugation in the vicinity of the said opening part, or drilling a through-hole and making it a holding part.
In addition, it goes without saying that various design changes can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Packaging bag 2 Opening part 3 Flat part 4 Edge part 5 Opening part 10 Outer bag 13 Flat part 15 Protrusion part 16a-c Base ridgeline 17a-c Ruled line for folding 20 Inner bag 23 Flat part 25 Protrusion part 26a-c Base Ridge lines 27a-c Folding ruled lines L10 Vertically extending folding ruled lines L11, 12 Diagonally extending folding ruled lines L13 Horizontally extending folding ruled lines

Claims (5)

In a packaging bag in which an outer bag and an inner bag having elasticity and flexibility are overlapped on the inside and outside,
The outer bag has a large number of outer protrusions formed on the peripheral wall surface and having a hollow portion protruding outward.
The inner bag is formed on the peripheral wall surface, and has a plurality of inner protrusions projecting inward with a hollow part,
A packaging bag, wherein a hollow portion of the outer protrusion and a hollow portion of the inner protrusion are aligned. The outer protrusion consists of a hollow protrusion that protrudes outward from the reference surface of the outer bag,
The inner protrusion consists of a hollow protrusion that protrudes inward from the reference surface of the inner bag,
The base ridge line formed between the outer protrusion and the reference surface of the outer bag matches the base ridge line formed between the inner protrusion and the reference surface of the inner bag, or the base of the outer protrusion. The packaging bag according to claim 1, wherein one or a plurality of base ridge lines of the inner protrusion are included in the range of the ridge line. The side forming the base ridge line of the outer protrusion matches the side of the base ridge line of the outer protrusion adjacent to the outer protrusion,
The packaging bag according to claim 1 or 2, wherein the coincident sides continuously extend in a straight line shape or a curved shape to form a ruled line for bending.   The outer bag and inner bag have a flat surface in the vicinity of the opening on the peripheral wall, the part where the outer and inner protrusions are formed is folded back at the bottom, and the left and right edges of the peripheral wall are integrated. The packaging container according to any one of claims 1 to 3, wherein the packaging container is welded.   5. The packaging container according to claim 1, wherein the outer bag has a rigidity equal to or less than that of the inner bag, and the inner bag is made of a sheet having a flexibility equal to or less than that of the outer bag. .

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