JPH07175173A - Packaging bag - Google Patents

Abstract

PURPOSE:To easily unseal a packaging bag and to easily take out a film unit with a lens after unselaing by providing a notch for unsealing which crosses the adhesive parts in the longitudinal and lateral directions of the packaging bag. CONSTITUTION:The packaging bag 2 is molded in a bag state by sealing a PET sheet at a longitudinal sealing part 3 and upper and lower sealing parts 4 and 5. The notch for unsealing 7 is provided on the upper sealing part 4, and is obtained by obliquely notching the sealing part 4 toward the sealing part 5 so as to obliquely cross the sealing part 3, and both ends 7a and 7b of the notch 7 are positioned so as to straddle the sealing part 3. In the case of unsealing the packaging bag 2, the notch 7 is picked up and pulled toward the sealing part 5, so that the packaging bag 2 is cut off along the sealing part 3 in a ribbonlike shape and easily unselaed. At such a time, an aperture is formed in a wide range equal to or above the width of the film unit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging bag for sealing a lens-fitted film unit in a three-way pillow package.

[0002]

2. Description of the Related Art A film unit with a lens such as "Sharing Run Econo Shot" and "Sharing Run Super 800" (both are trade names) from the applicant so that photography can be enjoyed easily at a low price. Is commercially available. These lens-fitted film units are generally widely used because they can be taken immediately on the spot when they are purchased, and they can be taken to a developing store as they are after taking the photos.

In such a lens-fitted photo film unit, the photo film is loaded during the manufacturing process thereof, and therefore the loaded photo film is protected from moisture and dust until the user actually uses it after manufacturing. Need to be kept. Therefore, the lens-fitted film unit is packed in a moisture-proof packaging bag when shipped from the manufacturer.
They are packaged one by one, and the user opens the packaging bag when using.

In the packaging bag as described above, generally, a film unit with a lens is placed on one sheet of packaging material, and the opposite ends of the packaging material are adhered to form a tubular shape, and then the tubular shape is formed. Seals both open ends of the packaging material
This is a so-called three-way pillow packaging bag.

Conventionally, the packaging material used for the packaging bag has heretofore been a thin aluminum sheet laminated with a transparent polyethylene sheet, but in recent years, as interest in proper disposal of industrial waste has increased, the packaging bag has become popular. It has become a problem that only incombustible aluminum sheets are left unburned when incinerated. Therefore,
Recently, in order to secure the same moisture resistance as before without using an aluminum sheet, a sheet material of polyethylene terephthalate called PET is laminated in several layers with a material having a moisture protection function such as SiOx vapor deposition. , Is being used for packaging bags as a new packaging material.

[0006] By the way, this packaging bag is designed so as to fit the lens-fitted film unit to some extent in order to prevent the lens-fitted film unit from swaying in the packaging bag or the packaging bag itself swelling after packaging. It is molded into the specified size.

[0007]

However, as described above, the conventional packaging bag is formed in such a size that it comes in close contact with the lens-fitted film unit to some extent, and thus it is difficult to open the packaging bag. For this reason, some packaging bags are notched, but even if the packaging bag is torn from this notch, a portion of the packaging bag will not be formed even if the PET sheet material is laminated in several layers. Just tear it into a fixed shape,
After all, there is a drawback that it is difficult to take out the lens-fitted film unit from the packaging bag even after opening.

However, in order to make it easier to take out the lens-fitted film unit, if the size of the packaging bag is made considerably larger than that of the lens-fitted film unit, the object to be packaged will be shaken and damaged in the packaging bag, or the packaging bag will be damaged. Swells irregularly, which hinders the display and stacking of packages.

The present invention has been made in consideration of the above problems of the prior art. In a packaging bag for packaging a film unit with a lens by three-way pillow packaging, the packaging bag can be easily opened and at the same time, An object of the present invention is to provide a packaging bag in which the lens-fitted film unit can be easily taken out after opening.

[0010]

In order to achieve the above-mentioned object, a first bonding portion in which the opposite ends of the packaging material are bonded in parallel to form a tubular shape, and both open ends of the tubular packaging material are formed. In the packaging bag for sealing the lens-fitted film unit by the two second adhesive portions adhered in a plate shape, the second adhesive portion on one side reaches the second adhesive portion on the other side through the first adhesive portion. A notch for opening the packaging bag, which is opened in the direction, is provided.

In the second aspect, a part of the opening notch is perforated. In the third aspect, the opening notch is provided so that a part of the first adhesive portion is left uncut. Further, in claim 4,
The second adhesive portion provided with the notch for opening and the first adhesive portion are adhered to each other.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an external perspective view of a packaging bag of the present invention in which a lens-fitted film unit is housed. Also, FIG.
[Fig. 2] is a partially cutaway view of the packaging bag of Fig. 1. The packaging bag 2 comprises a thin PET sheet having two layers printed with various patterns and the like, a vertical sealing portion 3 as a first adhesive portion, and a second PET portion at two places.
This is a bag-shaped product that is sealed by three sides of the upper sealing part 4 and the lower sealing part 5 that are adhesive parts, and the lens-fitted film unit 6 that is the object to be packaged is housed in a moisture-proof state.

The vertical sealing portion 3 of the packaging bag 2 has an end portion 3a of the PET sheet and an end portion 3b formed by folding back the end portion 3a to be about 10 mm.
The vertical sealing portion 3, the upper sealing portion 4, and the upper sealing portion 4, which are overlapped with each other and heat-sealed from the end portion of the upper sealing portion 4 to the end portion of the lower sealing portion 5, which will be described later. Only in the lower sealing portion 5, the thickness of the packaging bag 2 is approximately doubled.

An opening notch 7 is provided in the upper sealing portion 4. The opening notch 7 is formed by obliquely cutting the upper sealing part 4 toward the lower sealing part 5 so as to cross the vertical sealing part 3 obliquely. Both ends 7 of the opening notch 7 are cut.
The a and 7b are located so as to straddle each other along the vertical sealing portion 3.

The operation of the above embodiment will be described. When the user opens the packaging bag 2 in order to use the lens-fitted film unit 6, the opening notch 7 provided in the upper sealing part 4 is pinched and the opening notch 7 is moved toward the lower sealing part 5. Simply pull on the packaging bag 2 as shown in Fig. 3.
Is cut into a ribbon shape along the vertical sealing portion 3 and is easily opened. At this time, the packaging bag 2 is cut out along the vertical sealing portion 3 in which the PET sheets are doubled,
Even if the PET sheet has no tearing direction, the packaging bag 2 is not torn obliquely during the opening, and the cut extension 7c of the opening notch 7 is not cut in the middle.

In the packaging bag 2 thus opened, the vertical sealing portion 3 is cut out in a ribbon shape from the upper sealing portion 4 to the lower sealing portion 5, and is opened in a wide range beyond the lateral width of the lens-fitted film unit 6. 8 is formed, the lens-fitted film unit 6 can be taken out of the packaging bag 2 very easily.

In this embodiment, the lens-fitted photo film unit 6 is housed in the direction of the vertical sealing portion 3 of the packaging bag 2 with the photographic lens facing the front. The back surface of the attached film unit may be housed with the back surface facing the vertical sealing portion 3 of the packaging bag 2.

In addition to the above-mentioned embodiment, for example, FIG.
It is conceivable that the opening notch 12 is also used as the display hole 13 of the lens-fitted film unit, and the opening notch 12 is continuously provided below the display hole 13 like the packaging bag 11 shown in FIG.

FIG. 5 is an explanatory view of a third embodiment of the packaging bag of the present invention. Similar to the first embodiment, the packaging bag 21 has a thin PET sheet on which various patterns and the like are printed in two layers and has two parallel end portions folded back about 10 mm and heat-sealed. The vertical sealing portion 22 which is the first adhesive portion, and the upper sealing portion 23 and the lower sealing portion 24 which are the second adhesive portions obtained by heat-sealing the two open ends of the PET sheet formed into a tubular shape as described above. The lens-fitted film unit, which is an object to be packaged, is housed in a moisture-proof state.

The upper sealing portion 23 is provided with a notch 25 for opening. The notch 25 for opening is formed so as to diagonally cross the vertical sealing portion 22 on the side of the one end 25a, and the end 2 on the opposite side via the semicircular knob portion.
The 5b side is formed so as to form a perforation 25c from a continuous cut in the middle of the vertical sealing portion 22.

By providing the opening notch 25 having the above-mentioned configuration in the upper sealing portion 23, when the packaging bag 21 is opened, the opening notch 25 is pinched and the lower sealing portion 24 is opened.
The packaging bag 21 can be easily opened simply by pulling it in the direction.
Then, one end 25b side of the opening notch 25 is not made as a continuous notch so as to completely cross the vertical sealing portion 22, but is made as a perforation 25c, so that the upper sealing portion 23
The portion A shown in the figure on the upper end side of the opening notch 25 is not lifted apart from the opening notch 25. Therefore, when the packaging bag 21 is manufactured, the portion A of the upper sealing portion 23 floats up from the opening notch 25, and the A of the upper sealing portion 23 is applied to the manufacturing equipment of the packaging bag 21 or the like.
It is possible to prevent the parts from being caught or entangled. Further, the portion A does not warp and the appearance of the packaging bag 21 does not become unsightly.

FIG. 6 is an explanatory view of a fourth embodiment of the packaging bag of the present invention. Similar to each of the above-described embodiments, the packaging bag 31 includes a vertical sealing portion 32, which is a first adhesive portion that is formed by stacking and heat-sealing the end portions of the PET sheet, and the PET thus formed into a tubular shape. The two open ends of the sheet were each heat-sealed,
It is formed of an upper sealing portion 33 and a lower sealing portion 34 which are second adhesive portions.

The upper sealing portion 33 is provided with an opening notch 35. The opening notch 35 is formed so as to diagonally cross the vertical sealing portion 32 on the one end portion 35a side, and the opposite end portion 3 via the semicircular knob portion.
On the 5b side, a cut is formed halfway along the vertical sealing portion 32 so that a part of the vertical sealing portion 32 is left uncut.

As described above, since the end 35b side of the opening notch 35 is formed so that a part of the vertical sealing portion 32 is left uncut, the lower notch 34 is pinched by the opening notch 35.
The packaging bag 31 can be easily opened simply by pulling it in the direction, and part of the opening notch 35 is connected to the vertical sealing portion 32, so that the upper sealing portion 33 is provided on the upper end side of the opening notch 35. The portion B shown in the drawing is a notch 35 for opening.
It doesn't float away from you. This prevents the portion B of the upper sealing portion 33 from being lifted up and caught or entangled in the manufacturing equipment or the like when the packaging bag 31 is manufactured, as in the above-described embodiment. Also,
The part B does not warp, and the appearance of the packaging bag 31 does not become unsightly.

FIG. 7 is an explanatory view of the fifth embodiment of the packaging bag of the present invention. The packaging bag 41 is formed of a vertical sealing portion 42 that is a first adhesive portion, an upper sealing portion 43 that is a second adhesive portion, and a lower sealing portion 44, as in each of the above-described embodiments. Then, the upper sealing portion 43 is provided with a notch 45 for opening.

An adhesive portion 46 that adheres the vertical sealing portion 42 and the upper sealing portion 43 is formed in a portion of the vertical sealing portion 42 which is located above the opening notch 45. The adhesive portion 46 is formed by adhering the vertical sealing portion 42 above the opening notch 45 and the upper sealing portion 43 with an adhesive, but may be adhered by heat welding.

As described above, the adhesive portion 46 includes the vertical sealing portion 42 above the opening notch 45 and the upper sealing portion 4.
Since 3 is adhered, the packaging bag 41 can be easily opened only by pinching the opening notch 45 and pulling it toward the lower sealing part 44, and the vertical sealing part 42 and the upper sealing part 43 are bonded. Since the adhesive portion 46 is formed, the C portion of the upper sealing portion 43 shown in the drawing does not float away from the opening notch 45. This prevents the C portion of the upper sealing portion 43 from being lifted up and caught or entangled in the manufacturing equipment or the like when the packaging bag 41 is manufactured, as in the above embodiment. Further, the C portion is warped, so that the appearance of the packaging bag 41 does not become unsightly.

In each of the above-mentioned embodiments, an opaque PET sheet with a printed pattern is used as the constituent material of the packaging bag, but a transparent PET sheet may be used as the constituent material of the packaging bag. In this case, the type of lens-fitted film unit having different specifications such as a built-in strobe or a panoramic type has the advantage that it can be visually recognized from the outside of the packaging bag, which is very convenient.

[0029]

As described above, according to the packaging bag of the present invention, one end of the packaging material facing the packaging material is attached to the second bonding portion of one end of the tubular packaging material that is bonded in a plate shape. Since the notch for opening the packaging bag, which is opened in the direction from the second adhesive portion to the other second adhesive portion through the first adhesive portion formed by adhering in parallel to each other in a tubular shape, the packaging bag is extremely easily opened, and The lens-fitted film unit can be reliably taken out from the packaging bag after opening.

Further, one end side of the opening notch may be perforated in the middle of the first adhesive portion, or a part of the first adhesive portion may be left uncut, or a portion above the opening notch may be left uncut. Since the first adhesive portion is adhered to the second adhesive portion, the upper end side of the second adhesive portion with respect to the opening notch is prevented from rising apart from the opening notch. Therefore, when the packaging bag is manufactured, the upper end side of the opening notch of the second adhesive portion does not float up from the opening notch and is not caught or entangled in the packaging bag manufacturing device or the like.
Moreover, the upper end side of the second adhesive portion is bent back from the opening notch, and the appearance of the packaging bag is not unsightly.

[Brief description of drawings]

FIG. 1 is an external perspective view of a packaging bag embodying the present invention.

FIG. 2 is a partially cutaway view of the packaging bag of FIG.

FIG. 3 is an explanatory view of the packaging bag of FIG.

FIG. 4 is an external perspective view of another embodiment of the packaging bag embodying the present invention.

FIG. 5 is an explanatory diagram showing a third embodiment of the present invention.

FIG. 6 is an explanatory diagram showing a fourth embodiment of the present invention.

FIG. 7 is an explanatory diagram showing a fifth embodiment of the present invention.

[Explanation of symbols]

 2 Packaging bag 3 Vertical sealing part 4 Upper sealing part 5 Lower sealing part 7 Notch for opening 25c Perforation 46 Adhesive part

Claims (4)

[Claims] 1. A first adhesive portion formed by adhering opposite ends of a packaging material in parallel to form a tubular shape, and two second adhesive portions formed by adhering both open ends of the tubular packaging material in a plate shape. In the packaging bag for sealing the lens-fitted film unit, the packaging bag is opened in a direction from the second adhesive portion on one side to the second adhesive portion on the other side through the first adhesive portion. A packaging bag characterized by having a cut. 2. The packaging bag according to claim 1, wherein a part of the opening notch is perforated. 3. The packaging bag according to claim 1, wherein the opening notch is provided in the first adhesive portion so that a part of the first adhesive portion is left uncut. 4. The second opening provided with the opening notch.
The packaging bag according to claim 1, wherein an adhesive portion and the first adhesive portion are adhered to each other.