JPH0215790Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a packaging bag constructed by reinforcing the front and back sides and bottom of a transparent bag body by laminating a support side plate made of cardboard. It is related to.

[Prior Art] Conventionally, a packaging bag in which a handle made of cardboard is provided at the upper opening of a transparent bag body is disclosed in, for example, Utility Model Publication No. 56-13236.
No. 59-37470, No. 59-33790 and No. 60-
It is known as described in publications such as No. 30809. In addition, heavy packaging bags with walls on both left and right sides of a paper bag made of kraft paper, etc.
It is known from Publication No. 20822. However, although the former bag has a handle made of cardboard that makes it easy to open and close the upper opening, and the handle can also be used as a hanging means, the bag body has poor shape retention, and therefore the bulk of the stored items. Although it can be deformed depending on the thickness, it may compress or deform the stored item. In addition, the latter heavy packaging bag is
Although it has shape-retaining properties and can store bulky (thick) items without being compressed by the walls, there was a problem when checking the stored items because they could not be seen through.

For this reason, in Utility Model Application Publication No. 115333/1983, the outer circumferential side wall and bottom lid of a case-type bag made of plastic film or the like are covered with an outer box, and the part including the sealing part that forms the bottom of the bag is covered with the inner surface of the bottom lid of the outer box. Disclosed is one in which approximately half of the outer box is adhesively fixed to the lower inner surface of the outer box. According to this, the gusset-type bag is integrated into the outer box, so it can be folded flat and does not take up storage space, or the bottom of the bag can be automatically expanded by simply closing the bottom lid when inserting items. Can be molded. However, in the gusset-type bag of the invention, the ``gusset'' portion formed by the bottom cover of the outer box and the left and right side walls of the bottom of the gusset-type bag cannot expand or contract, but always remains constant. Therefore, the space area formed inside the gazette type bag is constant, and for example, the volume (thickness) of the stored items
Because the space area inside the gusset and gazette type bag cannot be changed in size to accommodate this, defects such as stored items being compressed and deformed within the bag covered by the outer box, or shifting and being sheltered. It was hot. In addition, since the outer box covers the entire outer circumferential surface except for the top opening,
There was also the inconvenience that the stored items could not be observed from the outside.

[Purpose of the invention] This invention allows stored items to be observed from the outside, has good shape retention, allows items to be taken in and out easily, and holds the stored items in a sandwiched state with the front and back sides kept flat. Ru. In addition, flexible gussets are formed on the left and right sides and the bottom to suit the thickness of the item, allowing the size of the space inside the bag to be adjusted appropriately, and as a result, the item can be protected without being compressed or displaced. The purpose of the present invention is to provide a packaging bag that can store even heavy items.

[Structure of the device] Consists of a transparent bag body that is open at the top end, and a support side plate made of cardboard that is narrower in width than the bag body and long enough to cover both the front and back sides of the bag body. , multiple horizontal fold lines are provided in the longitudinal center of the support side plate,
The supporting side plate is divided into side pieces by folding in half in the longitudinal direction, and the horizontal folding line of the supporting side plate is positioned at the bottom of the bag, and the entire surface is attached to the bottom, and both side pieces are attached to the front and back of the bag. By pasting it to the outside of the side surfaces, gussets that can be bent and deformed are formed on both the left and right sides of the front and back sides of the bag, and the horizontal folding lines are selected according to the thickness of the stored items and bent at right angles at two locations. As a result, the bag body and supporting side plates are configured to maintain and be fixed in a U-shape with a gusset width corresponding to the thickness of the stored article.

[Function] The bag body, including the bottom part, is reinforced by supporting side plates bonded to both the front and back sides, and is kept flat to firmly hold the stored items in the sandwiched state.

In addition, the horizontal fold line provided at the center of the supporting side plate is selected appropriately according to the volume (thickness) of the stored items, and by bending it at right angles at two places, a gusset that can be bent, stretched, and deformed is formed at the bottom of the bag. However, with this gusset, the space area inside the bag can be appropriately formed to match the size of the article. Therefore, the article can be protected without being compressed or deformed inside the packaging bag.

At this time, the entire bottom of the bag is attached to the horizontal fold line of the support side plate, and both side pieces are also attached to the outside of the front and back sides of the bag. Therefore, by bending the horizontal fold line at right angles, the gusset of the bag body is also bent and deformed in unison with the gusset.

Furthermore, the stored state of the articles can be seen through the "gussets" formed on both the left and right sides of the bag.

[Example] In the figure, 1 is a relatively thin bag made of a transparent synthetic resin film. 3.

Reference numeral 4 denotes a support side plate made of cardboard, and the width W1 of the support side plate 4 is slightly narrower than the width W2 of the bag body 1, and the length is such that it covers both the front and back sides 2, 2 of the bag body 1. A piece of cardboard is used. The support side plate 4
In addition to drilling holes 5, 5 at both ends,
A plurality of horizontal folding lines 6 are provided in the central part in the longitudinal direction, and the paper is divided into side pieces 7 by folding in half in the longitudinal direction.

This support side plate 4 holds the folded part of the bag body 1.
By attaching the side pieces 7, 7 to the outer surfaces of both the front and back sides 2, 2 of the bag body 1,
A packaging bag A is constructed which has gussets g1, g1 that can be freely bent and deformed on both the left and right sides of the front and back sides 2, 2.

Next, the packaging bag A of the present invention configured as described above
To explain the use of the bag body 1, first open the tips of the side pieces 7, 7 of the support side plate 4 to the outside to connect the gussets g1, g1 of the bag body 1, which are bonded together, to the side pieces 7, 7.
The opening 3 is expanded by deforming the opening 3 at right angles to both ends of the opening 3. The article B to be stored is inserted through the opening 3, and then the front and back sides 2, 2 of the bag body 1 are inserted into the opening 3.
Nearby, the upper ends of the side pieces 7, 7 of the support side plate 4 are sealed by stapling or the like.

When inserting the article B, select the horizontal fold line 6 provided on the supporting side plate 4 according to the thickness of the article B, and bend the horizontal fold line 6 at right angles at two places.
The bottom part of the bag body 1 whose entire surface is bonded together expands or contracts. As shown in FIG. 5, the bag body 1 and the support side plate 4 can obtain the width of the gusset g2 according to the thickness of the article B, and are held and fixed in a U shape, and in this state, the packaging bag A is The middle portion is also deformed to an appropriate size on both the left and right sides by the degree of freedom of the gussets g1 and g1, as shown in FIG. A suitable space area for storing the article B is formed inside the bag body 1. Therefore, the article B stored inside the packaging bag A is protected so as to be stored stably without being compressed or deformed or, conversely, from being unnecessarily shifted. Also,
Since the gussets g1 and g1 on both sides are made up of only the transparent bag 1, the stored articles B can be seen through from both sides and the articles B can be checked while being stored.

As shown in FIG. 7, the bag 1 is formed long so that the opening 3 protrudes from the tip of the support side plate 4, and the part that comes off from the support side plate 4 is heat welded 8 to improve the sealing workability. Furthermore, unpacking can be made easier.

Furthermore, in the packaging bag A of the present invention, the entire outer surface of the support side plate 4 can be used as an advertising medium or a space for display effects. Moreover, it can be displayed without distinguishing between the front and back.

[Effects of the invention] As described above, the packaging bag of the invention has a single supporting side plate attached to the outside of both the front and back sides, excluding the left and right sides of the transparent bag body, which are connected at the bottom. The structure is simple and can be manufactured easily and at low cost.Moreover, the front and back sides and bottom have a double structure by laminating the bag body and the support side plate to provide strength and shape retention. It has the advantage of being superior in terms of gender.

In addition, by selecting multiple horizontal fold lines provided at the center of the support side piece according to the volume (thickness) of the stored items, and bending them at right angles at two places, an appropriately sized space area can be created inside the bag. , and as a result, the contents can be stably accommodated in a bag of just the right size. Therefore, there is an advantage that the stored items are protected from being compressed, deformed, or conversely moved.

Furthermore, the packaging bag of the present invention has the advantage that the stored articles can be seen through the left and right sides, making it easy to check the articles.

[Brief explanation of the drawing]

The figures relate to an embodiment of the present invention, and Fig. 1 is an exploded perspective view, Fig. 2 is a perspective view in a flat state, Fig. 3 is a perspective view with the opening expanded, and Fig. 4 is a perspective view in a flat state. 5 is a vertical sectional view of the device in use, FIG. 6 is a horizontal sectional view of the same as above, and FIG. 7 is a sectional view of the opening 3 in a state where the opening 3 is thermally fused. 1...Bag body, 2, 2...Front and back sides, 4...Opening, 4...Support side plate, 6...Horizontal fold line, g1, g
2...Machi, A...Packaging bag.

Claims (1)

[Scope of utility model registration request] It consists of a transparent bag body that opens at the top end, and a support side plate made of cardboard that is narrower in width than the bag body and long enough to cover both the front and back sides of the bag body. Multiple horizontal fold lines are provided in the center of the direction,
The support side plate is divided into side pieces by folding in half in the longitudinal direction, and the horizontal fold line of the support side plate is positioned at the bottom of the bag, and its entire surface is attached to the bottom, and both side pieces are attached to the bottom of the bag. By laminating the outer sides of the front and back sides, flexible gussets are formed on both the left and right sides of the front and back sides of the bag, and the horizontal fold lines are selected at two locations according to the thickness of the stored items and folded at right angles. A package characterized in that, by bending, the bag body and supporting side plates are held and fixed in a U-shape with a gusset width corresponding to the thickness of the stored article, and the space area within the bag body is adjusted. Bag for use.