JP2007331781A - Easy-to-open sterilizing package bag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an easy-to-open sterilizing package bag designed so that its front and back films can be easily grasped and the bag can be easily opened. <P>SOLUTION: The easy-to-open sterilizing package bag is formed by superposing two rectangular sheets, one of which is a sheet permeable to gas such as air and the other of which is a synthetic resin sheet. The bag has a heat non heat-joined part along one edge, and perimetral heat joined part along the other three edges in a nearly-U-shape. The bag also has a projecting heat joined part connected to the perimetral heat joined part and projecting outward to separate a storage space and the non-heat-joined part. The perimetral heat joined part and projecting heat joined part are jointed together so as to be peelable. In the package page, one end edge having a projecting heat joined part has an extension part, which is part of the permeable sheet or synthetic resin sheet extending out by a predetermined dimension. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a sterilization packaging bag for articles to be sterilized used for medical purposes, and more specifically, an opening to be easily picked and peeled off from a heat-bonding part, which can be easily opened and stored. It relates to a packaging bag for sterilization that can be easily opened.

  Conventionally, it is necessary to use articles that have been sterilized before use, such as for medical use. For example, articles to be sterilized such as scalpels, syringes, and gauze are gas permeable so that they can be sterilized. Then, after sterilization, it is put in a sterilization packaging bag that cannot permeate bacteria so that secondary contamination can be prevented, and then sterilized in advance using high-temperature steam, ethylene oxide gas (EOG), etc. ing. The articles and the like after sterilization are stored in a sterilization packaging bag until used for medical treatment, and are opened and used for the first time when used for medical treatment. Such a sterilization packaging bag employs an opening method such as tear opening or peel-opening, and a busy medical site demands a sterilization packaging bag that is easy to open.

  There are two types of sterilization packaging bags excellent in easy-openability: a tear-open type and a peel-open type. In the tear opening method, a tear piece is generated at the time of opening and becomes a foreign material, but after opening, a peel open method is often employed in which no foreign material is generated and the contents can be easily taken out. The peel-open method uses a gas-permeable olefin-based non-woven fabric on one side and a two-layer film with polyester and polypropylene laminated on the other side. In a sterilized bag body having an opening in which the peripheral edges of the front and back films made of a barrier material are sealed, the direction orthogonal to the opening direction of the bag body when taking out the object to be sterilized in a part of one of the front and back films A sterilization bag or the like in which sterilized paper is provided in the direction to provide air permeability is known (for example, see Patent Documents 1 and 2).

The above-mentioned sterilization bag can be easily opened by picking one film and the other film from an opening provided on one side and pulling the film, and the contents can be taken out. However, there is a problem that it is difficult to pick the front and back films from the opening, especially when the front and back films are in close contact with each other. Development of bags is desired.
JP-A-7-172468 JP 2003-299717 A

  Then, this invention solves the said problem and is providing the packaging bag for easy-opening sterilization which can pick up the film of a front and back easily and can open it.

  In order to achieve the above object, according to the present invention, two rectangular sheets, one of which is made of a gas permeable breathable sheet and the other of which is made of a synthetic resin sheet, are overlapped. Then, a non-thermally bonded portion is formed along one side, a substantially U-shaped peripheral thermal bonded portion is formed on the other three sides, the peripheral thermal bonded portion is connected, and the storage portion and the non-thermal bonded portion are connected. A protruding heat-bonding part that protrudes outward and separates from the outer periphery, wherein the peripheral heat-bonding part and the protruding heat-bonding part are detachably bonded to each other, and the protruding heat-bonding part For easy-opening sterilization, an extending portion is provided on one end of the side where the air-permeable sheet or the synthetic resin sheet is extended outward by a predetermined dimension. It is a packaging bag.

  Further, the present invention as defined in claim 2 is characterized in that in the easy-to-open sterilization packaging bag according to claim 1, point breathing portions are provided at both corners of one side edge portion where the protruding heat-bonding portion is formed, and the air permeability is provided. The sheet and the synthetic resin sheet are thermally bonded so as to be separable.

  In the first aspect of the present invention, an extended portion in which one of a breathable sheet and a synthetic resin sheet is extended outward by a predetermined dimension is formed on the edge of one side where the protruding heat-bonding portion is formed. By providing, the breathable sheet and the synthetic resin sheet can be easily picked up respectively, and by pulling in opposite directions, the peripheral heat-bonding portion and the protruding heat-bonding portion can be peeled from each other and opened, and the contents can be easily taken out. be able to.

  In addition, by providing point seals at both corners of the edge of one side where the protruding heat-bonding part is formed, the breathable sheet and the synthetic resin sheet are heat-bonded in a separable manner, so that heat and tension during bag making There is an effect of preventing curling in the non-thermally bonded portion formed along one side due to the influence and the influence of heat and water vapor during sterilization.

The above-described present invention will be described in detail below with reference to the drawings.
1 is a plan view showing a first embodiment of a packaging bag for easy-opening sterilization according to the present invention, FIG. 2 is a back view of FIG. 1, FIG. 3 is an explanatory view showing a YY section in FIG. These are top views which show 2nd embodiment of the packaging bag for easy-opening sterilization concerning this invention, the code | symbol 1 in a figure is a synthetic resin sheet, 2 is a breathable sheet, 3 is a non-thermal-bonding part, 4a, 4b 4c is a peripheral heat bonding part, 5 is a storage part, 6 is a protruding heat bonding part, 7 is an extension part, 8 is an indicator for EOG sterilization, 8 'is an indicator for steam sterilization, 9 is an opening mark, 10 is The easy-opening sterilization packaging bag of the first embodiment, 20 is the easy-opening sterilization packaging bag of the second embodiment, and 21 and 22 are point seal parts, respectively.

  The first embodiment of the present invention is as shown in FIGS. As shown in FIGS. 1 and 3, the easy-open sterilization packaging bag 10 according to the present invention has a rectangular gas-permeable synthetic resin sheet 1 and a breathable sheet 2 which are stacked on top of each other. A non-thermal bonding portion 3 is formed along the other three sides, substantially U-shaped peripheral thermal bonding portions 4a, 4b, and 4c are formed on the other three sides, and the peripheral thermal bonding portions 4a and 4c are connected to each other and the storage portion 5 is not connected. A protruding thermal bonding portion 6 that protrudes outwardly separating the thermal bonding portion 3 is formed, and the peripheral thermal bonding portions 4a, 4b, and 4c and the protruding thermal bonding portion 6 are thermally bonded so as to be peelable from each other.

  At the edge of the upper side of the synthetic resin sheet 1 superimposed on the breathable sheet 2, an extending portion 7 is provided that extends outward from the edge of the breathable sheet 2 by a predetermined dimension. . It is preferable that the extending part 7 extends 1 to 10 mm outward from the edge of the breathable sheet. If it is less than 1 mm, the effect of easy picking is insufficient, and if it exceeds 10 mm, the material is useless. The extending portion 7 is not limited to the synthetic resin sheet 1 and may be provided on the breathable sheet 2.

  The synthetic resin sheet 1 has transparency that allows the articles to be sterilized to be visually recognized and heat-bonded to the breathable sheet 2 to have an appropriate adhesive strength, and has heat resistance that can withstand sterilization such as high-temperature steam and ethylene oxide gas (EOG). There is no particular limitation as long as it is used, and synthetic resin films alone or by laminating them can be used, but they are generally laminated and used. For example, the base layer and the heat-adhesive resin layer or a plurality of base layers and the heat-adhesive resin layer are laminated, and the base layer is drawn or unstretched of polyethylene terephthalate, nylon, polyolefin, etc. A film is used. For the heat-adhesive resin layer, those having an appropriate adhesive strength by heat-bonding with the breathable sheet 2 can be used, for example, low density polyethylene, medium density polyethylene, high density polyethylene, linear low density polyethylene, ionomer, Polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-acrylic acid ester copolymer and the like can be used. The base material layer and the heat-adhesive resin layer are laminated by a known method such as dry lamination or extrusion lamination.

  The breathable sheet 2 has a property of easily permeating these gases such as high temperature steam and ethylene oxide gas (EOG), but not allowing bacteria to permeate, heat resistance resistant to sterilization temperature, steam. Can be used as long as the substrate has moisture resistance that can withstand heat and can be thermally bonded to the synthetic resin sheet 1, and sterilized paper, nonwoven fabric, and the like can be used. In addition, it is also possible to use a substrate in which a heat sealing agent or a material having functionality such as hydrophilicity or water repellency is entirely or partially coated on these substrates.

  As shown in FIG. 2, an indicator 8 for EOG sterilization and an indicator 8 ′ for steam sterilization are printed on the outer surface of the breathable sheet 2 so that the sterilization can be visually recognized by changing the color. It can be adapted to each sterilization. The indicator is not essential, but it can be confirmed at a glance that it is sterilized, and is a preferable mode for use in a medical field. Further, an opening mark 9 is printed in the vicinity of the protruding heat bonding portion 6 so that the opening and the opening direction of the easy-opening sterilization packaging bag 10 can be understood.

  Next, a method of using the easy-open sterilization packaging bag 10 will be described with reference to FIGS. The easy-opening sterilization packaging bag 10 before use forms the non-thermal bonding part 3 along the upper side, forms the peripheral thermal bonding parts 4a, 4c on the other two sides, and the peripheral thermal bonding parts 4a, 4c. A projecting heat-bonding portion 6 that is connected and separates the storage portion 5 and the non-thermal bonding portion 3 is formed and thermally bonded in a peelable manner, and the peripheral heat-bonding portion 4b is opened without being bonded. ing. In use, the unbonded peripheral heat bonding part 4b is opened to store articles to be sterilized in the storage part 5, the unbonded peripheral heat bonding part 4b is heat bonded and sealed, and then steam sterilized (autoclave sterilization). ) Or EOG sterilization to sterilize articles. In medical treatment such as treatment and surgery, the upper side of the synthetic resin sheet 1 is confirmed after confirming that the indicator provided on the breathable sheet 2 of the easy-open sterilization packaging bag 10 changes color to indicate sterilization. By protruding the non-thermally bonded part 3 of the synthetic resin sheet 1 and the air-permeable sheet 2 with fingers from the extending part 7 provided at the edge of the sheet, and pulling them in opposite directions, the protruding heat bonded part 6 and the peripheral heat bonded part Can be peeled from each other and opened, and the contents can be easily taken out. By providing the extending portion 7 as described above, even if the synthetic resin sheet 1 and the air permeable sheet 2 are in close contact with each other, the non-thermal bonding portion 3 can be easily separated, and the non-thermal bonding portion 3 of each sheet is picked. It becomes a part and can be easily picked with a finger.

  Next, a second embodiment of the present invention will be described with reference to FIG. The difference between the easy-openability sterilization packaging bag 20 of the second embodiment and the first embodiment is that point seal portions are provided at both corners of the edge portion of one side where the protruding heat-bonding portions 6 are formed as shown in FIG. 21 and 22 are provided, and the breathable sheet 2 and the synthetic resin sheet 1 are thermally bonded so as to be separable. Others are the same as in the first embodiment.

  Since the synthetic resin sheet 1 and the breathable sheet 2 constituting the easy-opening sterilization packaging bag 20 have different physical properties such as stress and thermal shrinkage, the easy-opening sterilization packaging bag 20 is manufactured. There may be a difference in stress and strain applied to each sheet at the time of bagging, a difference in thermal shrinkage due to the thermal bonding temperature, and curling may occur in the non-thermal bonding part 3. When curling occurs, the curled portion may be broken or caught during handling or transportation of the easy-open sterilization packaging bag, and the easy-open sterilization packaging bag may be damaged. In addition, due to the influence of heat and water vapor during sterilization, there is a difference in thermal shrinkage between the sheets and curling may occur in the non-thermally bonded portion 3, and the curled portion may be caught by other articles during handling. As a result, a pinhole is generated in the storage portion 5 and may become a secondary contamination factor. Providing the point seal portions 21 and 22 has an effect of preventing this.

  The point seal portions 21 and 22 are for fulfilling the above-mentioned roles, and the shape is not particularly limited. The point seal portion 21 and the peripheral heat bonding portion 4a and the point seal portion 22 and the peripheral heat bonding portion 4c are provided. It may be connected and integrated with the peripheral heat bonding part.

Next, the present invention will be described in more detail with reference to the following examples.
Using a biaxially stretched polyethylene terephthalate film (PET) with a single-sided corona treatment having a thickness of 12 μm, the corona-treated surface is subjected to predetermined printing by a gravure printing method, and a polyester-isocyanate adhesive is applied to the printed surface. A synthetic resin sheet having a configuration of PET / printing / DL / CPP was prepared by laminating a corona-treated surface of a single-sided corona-treated polypropylene film (CPP) having a thickness of 40 μm with a dry lamination method (DL). On the other hand, using 70 g / m ² sterilized paper blended with 20% polypropylene short fibers and mixed with paper, predetermined printing, an indicator for EOG sterilization, and an indicator for steam sterilization are provided by a gravure printing method. A breathable sheet was produced. After that, using a normal bag making machine having two paper feed axes, the synthetic resin sheet and the breathable sheet are attached to the respective paper feed axes, and the CPP surface of the synthetic resin sheet and the breathable sheet are not printed. The easy-open packaging for sterilization according to the first embodiment, in which a bag is made by overlapping the surfaces, and the peripheral heat bonding portions 4a and 4c and the protruding heat bonding portion 6 are detachably bonded, and the peripheral heat bonding portion 4b is not bonded. A packaging bag for easy-opening sterilization in which the peripheral heat bonding part 4b of the bag 10 was opened without being bonded was produced.

  Using the synthetic resin sheet and the breathable sheet produced in Example 1, the bag making machine used in Example 1 can be peeled off at the peripheral heat bonding parts 4a and 4c, the protruding heat bonding part 6 and the point seal parts 21 and 22. The easy-opening sterilization packaging bag in which the peripheral heat-bonding portion 4b of the easy-opening sterilization packaging bag 20 of the second embodiment in which the peripheral heat-bonding portion 4b was not bonded was opened without bonding.

  The gauze is enclosed in the storage part of the easy-opening sterilization packaging bag produced in Example 1 and Example 2, and the peripheral heat-bonding part 4b is thermally bonded and sealed, so that the easy-opening sterilization packaging bag 10 and the easy-opening property are sealed. A test sample of the sterilization packaging bag 20 was prepared. Thereafter, each test sample was autoclaved at 121 ° C. for 25 minutes and opened, and the synthetic resin sheet and the breathable sheet were in close contact with each other. The adhesive part could be separated and easily picked and pulled in the opposite direction, and peeled off at the protruding thermal adhesive part 6 and the peripheral thermal adhesive parts 4a and 4c, opened, and the gauze could be taken out.

Next, another test sample prepared in Example 1 and Example 2 was a mixed gas of 20% ethylene oxide and 80% carbon dioxide (gas pressure; 1.0 kg / cm ² , temperature 50 ° C., relative humidity 50%). RH) was subjected to EOG sterilization treatment for 3 hours, and the unsealing property was evaluated. The non-thermally bonded portion of the synthetic resin sheet and the breathable sheet could be separated from the extended portion and easily picked, opened, I was able to remove the gauze.

It is a top view which shows 1st embodiment of the packaging bag for easy-opening sterilization concerning this invention. It is a reverse view of FIG. It is explanatory drawing which shows the YY cross section in FIG. It is a top view which shows 2nd embodiment of the packaging bag for easy-opening sterilization concerning this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Synthetic resin sheet 2 Breathable sheet 3 Non-thermal bonding part 4a, 4b, 4c Peripheral heat bonding part 5 Storage part 6 Protruding heat bonding part 7 Extension part 8 Indicator for EOG sterilization 8 'Indicator for steam sterilization 9 Opening mark 10, 20 Easy-openability sterilization packaging bag 21, 22 Point seal part

Claims (2)

Two sheets of rectangular shape, one of which is a gas permeable breathable sheet and the other of which is a synthetic resin sheet, are overlapped to form a non-thermally bonded portion along one side, and approximately the other three sides are substantially coated. Forming a letter-shaped peripheral thermal adhesive part, connecting the peripheral thermal adhesive part and forming a protruding thermal adhesive part projecting outwardly separating the storage part and the non-thermal adhesive part, and the peripheral thermal adhesive part and the A packaging bag for easy-opening sterilization in which protruding heat-bonding portions are detachably bonded to each other, and either the breathable sheet or the synthetic resin sheet is formed on one edge of the protruding heat-bonding portion. An easily-openable sterilization packaging bag, characterized in that an extension portion is provided by extending one of the sheets outward by a predetermined dimension. The point which has a point seal part in both corners of the edge part of the one side which formed the said protrusion thermal bonding part, The said breathable sheet and the said synthetic resin sheet are heat-bonded so that isolation | separation is possible. Easy-to-open sterilization packaging bag.

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