JP2566662Y2 - Sealed packaging bag - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealed packaging bag made of a barrier film, and more particularly to a sealed packaging bag capable of preventing occurrence of pinholes.

[0002]

2. Description of the Related Art Conventionally, when an easily oxidizable drug or a hygroscopic drug is stored or stored, a gas barrier film or water vapor is used to avoid the influence of oxygen (air) or moisture (humidity). It is customary to seal in a barrier film packaging bag.

[0003]

However, the hermetically sealed packaging bag may cause pinholes due to an impact during transportation, thereby impairing the sealing performance of the packaging bag. There is a problem that the purpose of the above cannot be achieved. However, it is conceivable to use a thick film to prevent the occurrence of such pinholes.However, when packaging with an automatic packaging machine, it is difficult to perform the packaging work properly, and there is a limit to the use of the thick film. Therefore, it is difficult to completely prevent pinholes by thickening the film. Therefore, while the present inventor has been conducting intensive research on the causes of pinholes,
The following has been found. That is, the sealed packaging bag is usually transported in a case made of cardboard or the like. Were found to rub against each other due to the impact during transportation, and as a result, a pinhole was likely to occur at the corner. The present invention has been made in view of such circumstances, and an object of the present invention is to provide a sealed packaging bag that can prevent the occurrence of pinholes.

[0004]

The present invention has been made to achieve such an object, and the present invention is configured as follows. That is , it is composed of a gas barrier film or a water vapor barrier film , and
Both lower ends are sealed by the seals and the contents are collected.
In a sealed packaging bag on the left and right side edges of the volume portion is sealed portion is so not present, the boundary between the non-sealing portion at the seal portion both ends of the sealed packaging bag itself, and forms the seal portion and the contents receiving section Affix a reinforcing film to cover the area around
The stiffener film is located on the left and right sides near the boundary.
Cover both sides of the sealed packaging bag itself from each side.
It is a hermetically sealed packaging bag which is affixed in a folded state .

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 3, reference numeral 10 denotes a sealed packaging bag, in which a content container 12 containing an easily oxidizable chemical is sealed. This contents container 12 is sealed.
The part is a content storage unit . The sealed packaging bag 10 is made of a gas barrier film, and the back is stuck on the back in the vertical direction.
The upper and lower ends are sealed by sealing portions 14 and 16 (shown by oblique lines in the figure). Therefore, the content
There are no seal portions on both left and right edges of the object storage portion . In addition,
In the sealed packaging bag 10, in addition to the content container 12, an oxygen scavenger and a desiccant are enclosed as needed. Seal parts 14, 16
At both ends of the seal
In the vicinity of the portion, that is, at the four corners of the sealed packaging bag 10, the reinforcing films 18 are attached over the front and back of the sealed packaging bag 10 in a state of being bent from the left and right sides . Seal part 14,
As shown in FIG. 4 (a), both ends of the base member 16 are generally in the form of an arc, and as shown in FIG. 4 (b), cover the vicinity of the boundary 20 between the sealing portion and the non-sealing portion. One reinforcing film 18 is attached. In addition, as another embodiment of the present invention, as shown in FIG. 5, a reinforcing film 22 may be attached to the four corners of the sealed packaging bag 10 so as to cover the edges. As the reinforcing films 18 and 22, for example, a colorless and transparent tack label of a polyethylene terephthalate film (hereinafter referred to as a PET film) having a gas barrier property can be applied. The tack label is obtained by applying a pressure-sensitive adhesive (or adhesive) to the back surface of a film (for example, a thickness of 38 μ) cut into a predetermined shape, and attaching the film to an easily peelable backing paper. The sticking operation can be performed automatically and efficiently by using a tack labeler (tack label sticking machine). further,
It is also possible to combine a packaging machine such as a pillow packaging machine with a tack labeler so that the packaging operation and the reinforcing film attaching operation can be performed simultaneously.

In the above embodiment, PET is used as the reinforcing film.
Although a film is used, another film can be used instead of this, and other known means using a film instead of using a tack label may be adopted. Further, in the above embodiment, the case of a sealed packaging bag made of a gas barrier film is described, but it is needless to say that the present invention can be applied to a case where the sealed packaging bag is made of a water vapor barrier film.

[0007]

Since the present invention is configured as described above, the following effects can be obtained. According to the sealed packaging bag according to the first aspect, the reinforcing film is attached so as to cover the vicinity of the boundary between the sealed portion and the non-sealed portion at the end of the sealed portion of the sealed packaging bag. The easily damaged portion is protected, and as a result, the occurrence of pinholes can be prevented, so that the hermeticity of the hermetically sealed packaging bag can be maintained and improved. Further, in the case where a pinhole has already been generated, an effect of being repaired by sticking the reinforcing film can be expected.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention.

FIG. 2 is a view taken in the direction of arrow A in FIG.

FIG. 3 is a rear view showing the same embodiment.

FIGS. 4A and 4B are partially enlarged views of the embodiment. FIGS.

FIG. 5 is a rear view showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Sealing packaging bag 14 Seal part 16 Seal part 18 Reinforcement film 20 Boundary part 22 Reinforcement film

Claims (1)

(57) [Scope of request for utility model registration] 1. A gas barrier film or a water vapor barrier film , and upper and lower ends are sealed.
At the left and right sides of the content storage section
In the edge sealing packaging bag seal portion is so not present, the boundary between the non-sealing portion at the seal portion both ends of the sealed packaging bag itself, and constitutes the sea <br/> pole tip and the content accommodation portion attaching a reinforcement film so as to cover the vicinity of the part only, yet reinforcing fill
The area near the boundary is tightly packed from the left and right sides.
Bent over the front and back sides of the sealed packaging bag itself
A sealed packaging bag which is stuck in a state .