JP5779817B2 - Sterilization packaging bag - Google Patents

Description

  The present invention relates to a sterilization packaging bag for packaging medical instruments that require sterilization, such as syringes and catheters.

  An example of this type of sterilization packaging bag is shown in FIG. As shown in the figure, the sterilization packaging bag 50 includes a flexible sheet 51 having a gas barrier property with a sealant layer laminated on the inner surface, and a predetermined width having a heat seal property, a gas permeability property, and a bacteria barrier property. As shown in FIG. 10, the inner surface of both side edges of the flexible sheet 51 is the outer surface of both side edges of the sterilizing sheet 52 in a state in which a package G such as a medical instrument is accommodated. In addition, the flexible sheets 51 and the flexible sheet 51 and the sterilized sheet 52 are heat sealed at both ends. The shaded display area in FIG. 9 is a heat seal portion.

  Therefore, when a sterilization process such as gas sterilization using hydrogen peroxide gas or steam sterilization is performed in a state in which a medical instrument or the like as a package is packaged in the sterilization packaging bag 50, the sterilization sheet 52 passes through. As a result, sterilization gas or the like enters the bag, and the bag is sterilized by the sterilization gas or the like that has entered. In addition, since the sterilization sheet 52 has a bacteria barrier property, the bacteria do not enter the bag after packaging a medical instrument or the like, and the bag is held in a sterilized state.

JP 2003-299717 A

  By the way, when heat sealing the inner surfaces of both side edges of the flexible sheet 51 to the outer surfaces of both side edges of the sterilization sheet 52, as shown in FIG. However, the side edge portion of the flexible sheet 51 folded in such a manner is such that the outer surface that does not have heat sealability comes into contact with the outer surface of the sterilization sheet 52. The portion is not heat-sealed, and the bacteria barrier property cannot be ensured as the whole bag.

  Therefore, a defective product in which a packaged body such as a medical instrument is accommodated in a sterilization packaging bag in which such a sealing failure has occurred needs to be detected and separated by visual inspection or an inspection device having an imaging means. The flexible sheet 51 having gas barrier properties described above is usually transparent, and the outer surface of the flexible sheet 51 that does not have heat sealability and the outer surface of the sterilized sheet 52 are pseudo-bonded by heat. There is a problem that it is difficult to detect a sealing failure and the defective product cannot be reliably separated and removed.

  Then, the subject of this invention is providing the packaging bag for sterilization which can detect a sealing defect reliably.

In order to solve the above problems, the invention according to claim 1 is formed by a packaging material in which a sterilized sheet having gas permeability and bacteria barrier properties is partially joined to a flexible sheet having gas barrier properties. In the sterilization packaging bag, the inner edge of the flexible sheet is heat sealed to the outer surface of the sterilized sheet, and the edge of the flexible sheet that is heat sealed to the sterilized sheet The present invention provides a sterilization packaging bag provided with a seal failure detection display that changes to a different design when the edge portion is folded.

  As described above, the sterilization packaging bag according to the first aspect of the present invention is a seal that changes to a different design when the edge portion is folded into the edge portion of the flexible sheet that is heat sealed to the sterilization sheet. Since the display for defect detection is provided, it is possible to reliably grasp whether or not a seal defect has occurred by detecting a change in the design of the edge portion of the flexible sheet visually or by a detector. .

It is a front view which shows one Embodiment of the packaging bag for sterilization concerning this invention. (A) is a partially enlarged front view showing a heat seal portion between a flexible sheet and a sterilization sheet in the sterilization packaging bag same as above, and (b) is a heat seal between the flexible sheet and the sterilization sheet in the sterilization packaging bag same as above. It is a partial expanded sectional view which shows a part. It is sectional drawing which shows a flexible sheet | seat same as the above. (A) is a partially enlarged front view showing a state in which one end in the width direction of the flexible sheet in the sterilization packaging bag is partially folded into the inner surface side, and (b) is the sterilization packaging bag same as the above. It is a partial expanded sectional view which shows the state by which one edge of the width direction of the flexible sheet | seat was partially folded in the inner surface side. It is a partial enlarged front view which shows the heat seal part of the flexible sheet | seat and sterilization sheet | seat in the packaging bag for sterilization which is other embodiment. It is a partial enlarged front view which shows the state by which one edge of the width direction of the flexible sheet | seat in the packaging bag for sterilization same as the above was partially folded in the inner surface side. It is a partial enlarged front view which shows the heat seal part of the flexible sheet | seat and sterilization sheet | seat in the packaging bag for sterilization which is other embodiment. It is a partial enlarged front view which shows the state by which one edge of the width direction of the flexible sheet | seat in the packaging bag for sterilization same as the above was partially folded in the inner surface side. It is a front view which shows the conventional packaging bag for sterilization. It is sectional drawing which shows the packaging bag for sterilization same as the above. It is a partial expanded sectional view which shows the heat seal part of the flexible sheet | seat and sterilization sheet in the packaging bag for sterilization same as the above.

  Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 shows a sterilization packaging bag 1 according to the present invention. This sterilization packaging bag 1 is used for packaging medical instruments that require sterilization treatment such as syringes and catheters (hereinafter referred to as a packaged body), and the packaged body is packaged by a pillow packaging machine. The bag is made while wrapping.

  As shown in FIGS. 1 and 2 (a) and 2 (b), the packaging material includes a transparent flexible sheet 11 having gas barrier properties, and a sterilized sheet 13 having a predetermined width having gas permeability and bacteria barrier properties. The inner surfaces of both end edges in the width direction of the flexible sheet 11 are heat-sealed to the outer surfaces of the both end edges in the width direction of the sterilization sheet 13, and the flexible sheets 11 are And the flexible sheet | seat 11 and the sterilization sheet | seat 13 are heat-sealed. The shaded display portion in FIG. 1 indicates the heat seal portion.

  As shown in FIG. 3, the flexible sheet 11 is a base layer 11a having a thickness of about 10 to 30 μm made of a single layer film such as a biaxially stretched polypropylene film, a biaxially stretched polyamide film, or a biaxially stretched polyester film. And a gas barrier layer comprising a single-layer film made of ethylene / vinyl alcohol copolymer (EVOH) laminated on the inner surface side of the base material layer 11a, or a laminate film having a two-layer structure or a three-layer structure in which EVOH and polyamide are coextruded 2b and a sealant layer 11c having a thickness of about 30 to 150 μm made of unstretched polyethylene film or unstretched polypropylene film laminated on the inner surface side of the gas barrier layer 11b, as shown in FIG. 2 (b). As shown in the figure, a large number of diagonal lines SL are printed at regular intervals on both edges in the width direction on the inner surface side. In addition, a seal failure detection display 12 is provided.

  If the said sterilization sheet 13 has gas permeability and microbe barrier property, it will not specifically limit to the material etc., Various products, such as paper and resin, can be used. Specifically, for example, a high-density polyethylene continuous ultra-fine fiber of 0.5 to 10 microns spun at high pressure is randomly laminated, and then made into a sheet shape only by heat and pressure. Examples include Tyvek (registered trademark).

  As described above, the sterilization packaging bag 1 has a seal failure detection display composed of a large number of oblique lines SL printed at regular intervals on the edge portion of the transparent flexible sheet 11 heat-sealed to the sterilization sheet 13. 4 is applied to the outer surfaces of both edges in the width direction of the flexible sheet 11 to the outer surfaces of both edges in the width direction of the sterilization sheet 13, for some reason, FIG. ), When one edge in the width direction of the flexible sheet 11 is partially folded into the inner surface, the outer edge of the flexible sheet 11 has a poor heat-seal property. Since it comes into contact with the outer surface, the portion is not heat-sealed, and the bacteria barrier property cannot be secured as a whole bag.

  However, when one edge in the width direction of the flexible sheet 11 is partially folded to the inner surface side as shown in FIG. 4B, a seal failure detection display is shown as shown in FIG. Since many slant lines SL forming 12 change to an inverted “<”-shaped line CL, the design change of the seal failure detection display 12 is detected visually or by a detector or the like. Thus, it is possible to reliably grasp whether or not a seal failure has occurred, and the sterilization packaging bag 1 in which the seal failure has occurred can be reliably separated and removed.

  5 and 6 show a modification of the seal failure detection display. As shown in FIG. 5, a straight line L of a color that can be clearly distinguished from white, such as red or black, is printed on the inner surface of both end edges in the width direction of the flexible sheet 11. After that, when the seal failure detection display 12A having a solid white print BW with a predetermined width so as to cover the straight line L is adopted, one edge in the width direction of the flexible sheet 11 is partially on the inner surface side. When folded, as shown in FIG. 6, there is a region where the straight line L is not displayed at all in the folded portion. By detecting the presence or absence of the straight line L with the naked eye or by a detector or the like, there is a seal failure. Whether or not it has occurred can be ascertained reliably, and the sterilization packaging bag 1 in which a sealing failure has occurred can be reliably removed.

  Moreover, even when a large number of straight lines HL extending in the width direction of the flexible sheet 11 are printed at regular intervals as in the seal failure detection display 12B shown in FIG. 8 is partially folded on the inner surface side, the design changes as shown in FIG. 8, but the length of the straight line HL is shortened and the design does not change significantly. As in each of the embodiments described above, it is desirable that the design be such that a large change occurs such that the shape of the line changes or the line disappears.

  In each of the above-described embodiments, the seal failure detection displays 12 and 12A printed with the oblique lines SL and the straight lines L are employed. However, the present invention is not limited to this, and the end of the flexible sheet 11 in the width direction is used. In addition to the lines, various designs such as character arrangements and illustrations can be adopted as long as the edges are folded into the inner surface to change into different designs. At this time, in the case of the seal failure detection display 12 such as the slanted line SL, the flexible sheet 11 is preferably transparent so that the folded display portion can be confirmed from the outer surface side. In the case of a display 12A for detecting a defective seal, the flexible sheet 11 is subjected to solid printing with a background color that makes the straight line L conspicuous, or an opaque film or metal foil is applied to the flexible sheet 11. It is preferable to make the flexible sheet 11 opaque by providing it in one layer.

  In each of the above-described embodiments, the three-side seal type pillow packaging bag has been described. However, the present invention is not limited thereto, and the present invention is also applied to a flat bag, a side gusset bag, a self-supporting bag having a bottom gusset, and the like. Can be applied.

  Moreover, in each embodiment mentioned above, although the sterilization sheet | seat 13 was arrange | positioned in the longitudinal direction of a bag, it is not limited to this, It is also possible to arrange | position in the width direction of a bag.

  The present invention can be used when packaging medical instruments that require sterilization treatment, such as syringes and catheters.

DESCRIPTION OF SYMBOLS 1 Packaging bag for sterilization 11 Flexible sheet 11a Base material layer 11b Gas barrier layer 11c Sealant layer 12, 12A, 12B Seal detection display Solid printing

Claims (1)

A sterilization packaging bag formed by a packaging material formed by partially joining a sterilization sheet having gas permeability and bacteria barrier property to a flexible sheet having gas barrier properties,
The inner surface of the edge of the flexible sheet is heat sealed to the outer surface of the sterilization sheet,
The sterilization packaging is characterized in that the end portion of the flexible sheet heat-sealed to the sterilization sheet is provided with a seal failure detection display that changes to a different design when the end portion is folded. bag.

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