JPH0628102Y2 - Sterilization packaging bag - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a packaging bag for accommodating medical instruments, substrates, and other items that require sterilization with gas, steam or the like.

[Conventional technology]

BACKGROUND ART Syringes and other various medical devices have become disposable, and therefore various packaging bags have been proposed which can be sterilized by gas, steam or the like in a state where they are packaged.

Since the bag body usually uses a non-breathable plastic film, a punch hole for ventilation of a circular shape, a square shape, or another shape is provided in a part of the bag body, and a tape-like breathable sheet is provided on the inner surface side of the portion. It is known that the sterilization gas can be effectively adhered by adhering the sterilization gas (Saikai Sho 51-4287). If the vent hole has the above-mentioned shape, the breathable sheet (filter tape) is exposed at that part, which is not preferable because dust and the like are likely to be attached. Therefore, instead of the hole, a straight line having a certain length is used. One in which slits are formed in a perforated shape (Jitsuko 62-36775) is also proposed. Further, there is also one in which a linear slit is provided over the entire longitudinal direction of the portion where the film tape is applied.

[Problems to be solved by the device]

These bag bodies usually have a rectangular shape and are formed by heat-sealing one long side and one short side opposite to each other, or after heat-sealing the remaining short side after containing the contents, When the contents are taken out and used, it is general that the notch provided on the long side tears the bag body in the short side direction, that is, the lateral direction to open the bag. Therefore, the tear line crosses the film tape portion. Even if a notch is provided at a position where the planned tear line passes through the middle of the punch hole or slit, it will not actually tear exactly as it is, so in most cases, the punch hole or slit will be caught. Since the tearing is stopped here, it can be opened only halfway, which causes a problem that the contents are difficult to take out.

The purpose of the present invention is to eliminate the above-mentioned conventional inconveniences,
It can be torn smoothly, the entire bag can be easily opened, the contents can be taken out very easily, the gas sterilization function is excellent, and the dust on the surface of the filter tape can be prevented.
It is to provide a packaging bag for sterilization that can be surely protected.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the sterilization packaging bag of the present invention comprises two non-breathable films or sheets (hereinafter referred to as non-breathable film) which face each other to form a substantially rectangular bag body (1), and A tape (2) having air permeability and a bacteria blocking property across two opposite sides of the bag body at an appropriate position on the inner surface side of the air permeable film (1a) is provided on both side edges (2a) in the longitudinal direction.
(2b) is adhered and arranged, and the non-breathable film (1
A large number of minute needle holes (3) are provided in the zone where the tape (2) of (a) is arranged, and a tearing notch (5) is formed in the seal portion of the bag body (1) facing the filter tape (2). ) Is formed.

In the present invention, the non-breathable plastic film may be a film having thermal adhesiveness such as polyethylene or polypropylene itself, or a composite film obtained by laminating such a film on one side of polyester, nylon or other suitable non-breathable film. In the case of a composite film, the heat-adhesive plastic layer is folded in half with the heat-adhesive plastic layer as the inner surface side, or two sheets are stacked and sealed at a predetermined position to form a bag. Usually, as shown in FIG. 1, it is possible to fold it in two and seal the long and short sides with the seals 4, 4 '. Examples of the filter tape having a breathable bacteria-blocking property include those having a breathable bacteria-blocking property such as paper, a nonwoven fabric of synthetic fibers such as polypropylene and polyethylene, or a microporous plastic film.

Further, in the zone where the above-mentioned filter tape is arranged, the fine holes provided in the non-breathable film are not punch holes (punching) but minute holes formed by piercing the needle tip (for example, 0.3 to 1.0 mm). It is essential that the hole is
Usually, it is preferable that the particles are uniformly dispersed at a density of about 50 to 200 / cm ^{2, but} the density is not particularly limited, and the distribution density can be determined according to the required air permeability. When the other means is used without using the needle, the hole is cut cleanly, so that the object of the present invention is not sufficiently achieved. The tear notch is usually formed near the upper end or the lower end of the long side seal portion of the bag.

[Action]

When opening the bag, pinch the notch with your fingertip and tear the bag laterally.The tear line is formed by piercing the needle, not the punching hole or slit, even in the zone with the filter tape. Microscopically, the shape of the surroundings is not uniform and it is a small hole that is not cut out cleanly.There are many small holes, so the tear line passes through the small hole without any resistance, so the entire surface is very easy. Can be opened as desired.

Further, it has sufficient air permeability, does not hinder the air ventilation function of the filter tape, and has fine pores, so that the filter tape has a good covering property, and the adhesion and dirt of dust from the outside can be prevented.

〔Example〕

The drawings show a typical embodiment of the present invention. FIG. 1 is a plan view and FIG. 2 is a II-II 'section thereof. A polyester / polyethylene composite film is used as a non-breathable film, and a bag body 1 is formed by heat-sealing 4, 2'of the two sides of the polyethylene layer which are folded in two and overlapped. (If two sheets are stacked, seal three sides) 2
Is a filter tape, and both side edges 2a, 2b in the longitudinal direction thereof
Part is adhered to the inner surface side of the one side 1a of the air-impermeable film. 3 is a filter tape 2 of breathable film 1a
It is a needle hole for ventilation, which is provided by being evenly dispersed in the zone provided with. Although it depends on the thickness and properties of the non-breathable film, for example, a small hole having a diameter of about 0.3 to 1.0 mm is formed by piercing the needle tip in the range of about 50 to 200 per 1 cm ^2. .

Usually, it can be easily formed by using a roll in which needles such as sewing needles are planted and pressing the tape before or after adhering the filter tape 2 to the non-breathable film.

After filling the contents in the bag 1, the upper end is heat-sealed and the sterilized package is torn from the notch 5,
It could be easily opened by passing through the filter tape (2).

On the other hand, in the case where the ventilation part was formed by the perforated slit, the tear line was caught by this and stopped, and the opening was interrupted at this part.

Incidentally, FIGS. 4 to 5 show an example applied to a back-applied bag,
6 is a back seal portion, 7 is a notch forming seal portion, and 5 is a notch. In this case as well, it was possible to open the package as described above.

[Effect of device]

The sterilization packaging bag of the present invention has extremely good lateral cutability from the notch portion with the fingertips, the contents can be easily taken out and is easy to use, and the sterilization gas is vented during the sterilization process. In addition, the ventilation part, unlike the open holes and slits for punching, is sufficiently prevented from adhering and contaminating dust on the filter tape even after processing.
Further, the ventilation density can be easily adjusted by the distribution density of the needle holes, the ventilation portion can be easily formed, and there is an advantage that punching scraps are not generated, and the effect is extremely large.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, and FIG. 2 is its II.
-II 'sectional view, FIG. 3 is a plan view showing another embodiment, and FIG.
The figure is a sectional view taken along the line III-III '. 1 ... Non-breathable film bag body, 2 ... Breathable bacteria-blocking filter tape, 2a, 2b ... Adhesion of filter tape, 3 ... Needle hole, 4, 4 ', 7 ... Heat seal Part, 5 ... notch, 6 ... back seal part

Claims (1)

[Scope of utility model registration request] 1. A substantially rectangular bag body (1) is formed by facing two non-breathable films or sheets (hereinafter referred to as non-breathable film), and one non-breathable film (1a) is provided on the inner surface side. Breathability at the appropriate position over the two opposite sides of the bag,
A tape (2) having a bacterium-blocking property is arranged by adhering it at both side edges (2a) (2b) in the longitudinal direction, and in a zone of the non-breathable film (1a) where the tape (2) is arranged. , A bag body (1) with a large number of minute needle holes (3)
A sterilization packaging bag, characterized in that a tear notch (5) is formed in a seal portion facing the filter tape (2).