JP6490113B2 - Sterile bag - Google Patents

Description

  The present invention relates to a sterilization bag capable of sterilizing contents in a state where a medical article or the like is stored and sealed.

  Conventionally, as this type of sterilization bag, for example, a sterilization bag disclosed in Patent Document 1 is known. The sterilization bag described in the document is formed into a bag shape as follows. First, two portions of the non-breathable sheet are bent to have a substantially C-shaped cross section, and sterilized paper is applied to the opening between the end portions of the non-breathable sheet from the inside. And the peripheral part of a non-breathable sheet is heat-sealed in the state where the edge part of the said sterilized paper was pinched | interposed into the non-breathable sheet. Next, after the overlapping portion of the side edge of the sterilized paper and the side edge of the non-breathable sheet is sealed with an easy peel seal, one of the two bent portions is cut off and opened. Part is formed.

  The sterilization bag is sealed by heat-sealing the contents after the contents are stored in the sterilization bag through the opening. And this sterilization bag is circulated in the market after being sterilized with the contents sealed. When using the contents, the easy peel seal between the sterilized paper and the non-breathable sheet can be peeled off and opened to take out the contents.

  Moreover, the sterilization bag disclosed by patent document 2 is known as an example of another prior art. The sterilization bag described in the same document is formed by stacking rectangular front and back bodies and heat-sealing and joining the peripheral edge except for one of the four sides. The front and back bodies are formed from a non-breathable sheet except for one partial region. A breathable sheet having breathability for sterilization is disposed in the partial area.

  The partial area where the air permeable sheet is disposed is formed in an intermediate area between the opening and the bottom. And the peripheral part of the said air permeable sheet is joined to the said non air permeable sheet by heat sealing so that peeling is possible. Thereby, the breathable sheet can be peeled off, and the contents can be taken out from the partial area where the non-breathable sheet does not exist.

JP 2007-1584 A JP 2010-268967 A

  However, the above-described conventional sterilization bags prevent the peripheral heat seal part from being damaged and the contents from falling off or invading bacteria, and are easy to open and take out the contents. There was a point that should be improved.

  That is, it is necessary to increase the bonding strength of the heat seal portion so that the heat seal portion around the sterilization bag does not peel off when the contents are sealed or transported. On the other hand, in order to facilitate opening, the heat seal portion that becomes the opening portion must be joined with an appropriate strength so as to be peelable. However, as in the prior art disclosed in Patent Document 1, in a configuration in which one non-breathable sheet is folded and sterilized paper is joined, the sterilization bag is joined at the periphery of the sterilization bag. It has not been easy to increase the strength and to reduce the bonding strength of only the heat seal portion serving as the opening portion so as to be peelable.

  Further, in the configuration in which the opening for inserting the contents is formed so as to be sandwiched between the non-breathable sheets on the front and back sides of the sterilization bag as in the conventional technique described above, the non-ventilation is performed in the vicinity of the opening. There is also a problem that the inner surfaces of the adhesive sheets are in close contact with each other and it is difficult to open the opening. Further, when the contents are inserted into the sterilization bag, there is a problem that slipping between the contents and the inner surface of the non-breathable sheet is bad and it is difficult to put the contents.

  In addition, as in the sterilization bag disclosed in Patent Document 2, in the configuration in which the contents are taken out by peeling off the breathable sheet provided in the partial areas of the front and back bodies, from the viewpoint of preventing the heat seal part from peeling off, It was difficult to secure a wide opening for taking out the contents. If the opening is narrow, it is difficult to take out the contents. In addition, since the breathable sheet is more expensive than the non-breathable sheet, there is a problem that if the breathable sheet is enlarged in order to ensure a wide opening, the production cost of the sterilization bag becomes high.

  The present invention has been made in view of the above circumstances, and the object of the present invention is to facilitate the insertion of the contents, the bonding strength of the peripheral heat seal part is high, and the contents can be easily opened. The object is to provide a sterilization bag that is easy to take out.

The sterilization bag of the present invention comprises a non-breathable back sheet and a region on one side made of a non-breathable sheet in a plan view and the other region made of breathable sterilized paper and laminated on the back sheet. The inner surface of the front sheet and the inner surface of the back sheet are heat-sealed with each other leaving a partial opening at the periphery, and joining the non-breathable sheet and the sterilized paper The part is overlapped so that the non-breathable sheet is on the outside, and the inner surface of the non-breathable sheet and the outer surface of the sterilized paper are heat-sealed so as to be peelable, and the sterilization of the non-breathable sheet A non-sealed portion that is not heat-sealed with the sterilized paper is left at the edge of the portion superimposed on the paper, and the back sheet and the non-breathable sheet are formed on the support base and the inner surface thereof, respectively. The heat seal layer of the back sheet has a higher melting point than the heat seal layer of the non-breathable sheet, and the bonding strength between the sterilized paper and the back sheet is the sterilization It is characterized by being higher than the bonding strength between the paper and the non-breathable sheet .

  According to the sterilization bag of the present invention, the top sheet is configured such that one area is a non-breathable sheet and the other area is sterilized paper in plan view. The joint between the non-breathable sheet and the sterilized paper is partially overlapped so that the non-breathable sheet is on the outside, and the inner surface of the non-breathable sheet and the outer surface of the sterilized paper are heat-sealed so that they can be peeled off. . Thereby, when taking out the contents from a sterilization bag, the joint part of the non-breathable sheet | seat of a surface sheet and sterilization paper can be peeled off, and a sterilization bag can be opened easily.

  Moreover, the structure which can peel off a non-breathable sheet | seat from sterilized paper, and also can peel also to the heat seal part of a sterilization bag periphery, and can open a surface sheet largely is also employable. This makes it easy to take out the contents.

  In addition, the non-breathable sheet of the top sheet is made large and the sterilized paper is made small, so that the amount of expensive sterilized paper used is reduced and the cost of the sterilization bag is reduced while ensuring the ease of taking out the contents. be able to. Further, by reducing the size of the sterilized paper, there is an effect that the inside of the sterilized bag can be easily seen.

  In addition, since the joint portion between the non-breathable sheet and the sterilized paper of the surface sheet becomes the opening portion, the opening portion can be opened by placing the sterilization bag on a table or the like with the surface sheet facing upward. Thereby, a surface sheet can be opened widely in the state which put the contents on the back sheet, and the contents can be taken out easily.

  In addition, since it is not necessary to peel the sterilized paper from the back sheet when removing the contents, the sterilized paper and the back sheet may be firmly joined. Therefore, it is possible to prevent the heat seal portion between the sterilized paper and the back sheet on the periphery of the sterilization bag from being peeled off when the contents are inserted or transported.

  Moreover, according to this invention, the non-seal | sticker part which is not heat-sealed by the sterilization paper may remain in the edge part of the part superimposed on the sterilization paper of the non-breathable sheet | seat. Thereby, when opening a sterilization bag, a non-breathable sheet can be easily peeled off by picking a non-seal portion formed at an edge of the non-breathable sheet.

  Further, according to the present invention, the back sheet and the non-breathable sheet each have a support base and a heat seal layer formed on the inner surface thereof, and the heat seal layer of the back sheet is a heat seal of the non-breathable sheet. The melting point may be higher than that of the layer. Thereby, in the heat seal part of the periphery of a sterilization bag, the inner surface of a surface sheet and the inner surface of a back sheet are firmly joined, and the outstanding joining strength is obtained. On the other hand, the heat-seal layer of the non-breathable sheet has a lower melting point than the heat-seal layer of the back sheet, so that the joint between the non-breathable sheet of the top sheet and the sterilized paper can be easily opened. Heat sealed with bonding strength. With such a configuration, it is possible to avoid problems such as peeling of the heat seal part at the periphery of the sterilization bag during transportation. Also, when opening, the joint between the non-breathable sheet and the sterilized paper as the opening is easily pulled out while avoiding problems such as the heat seal at the periphery of the sterilization bag peeling off and the contents falling. Can be peeled off and opened.

  Moreover, according to this invention, the opening part in which the surface sheet and the back sheet | seat are not heat-sealed in the periphery of a sterilization bag may be formed in the edge part of sterilization paper. Accordingly, when the contents are put into the sterilization bag, the opening can be easily opened, and the sliding between the sterilized paper and the contents is good, so that the work for putting the contents becomes easy.

It is (A) top view and (B) AA sectional view taken on the line which shows schematic structure of the sterilization bag which concerns on embodiment of this invention. It is sectional drawing which shows the state in which the (A) content of the sterilization bag which concerns on embodiment of this invention is inserted, and the state in which (B) the content was accommodated. It is sectional drawing which shows the state by which the sterilization bag based on embodiment of this invention was opened.

Hereinafter, a sterilization bag according to an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 (A) is a plan view showing a schematic configuration of a sterilization bag 1 according to an embodiment of the present invention, and FIG. 1 (B) is a cross-sectional view taken along line AA of FIG. 1 (A) of the sterilization bag 1. FIG.

  The sterilization bag 1 stores various medical supplies such as a syringe, a syringe needle, a catheter, an infusion tube, a medical knife, and a gauze. The sterilization bag 1 is configured such that the contents can be sterilized while the contents such as a syringe are accommodated therein and sealed. The sterilization bag 1 is used as a packaging container for transporting and storing various medical supplies to a medical site.

  As shown to FIG. 1 (A) and (B), the sterilization bag 1 has the back surface sheet 2 and the surface sheet 3, and is formed in the substantially rectangular shape by planar view. The back sheet 2 is a non-breathable sheet having a bacteria barrier property formed in a substantially rectangular shape. On the other hand, the surface sheet 3 has a non-breathable sheet 4 having a bacteria barrier property and a germ barrier sterilized paper 5 having a breathability.

  The top sheet 3 is formed in a substantially same peripheral shape as the back sheet 2 in plan view. The right region of the top sheet 3 in FIG. 1 is composed of a non-breathable sheet 4 formed in a substantially rectangular shape, and the left region is composed of sterilized paper 5 formed in a substantially rectangular shape.

  The back sheet 2 and the non-breathable sheet 4 are synthetic resin sheets or films that do not allow air, bacteria, foreign substances, or the like to pass through, or a laminate thereof. As the back sheet 2 and the non-breathable sheet 4, for example, composite sheet materials made of various synthetic resins such as polyethylene, polypropylene, polyamide, polyester, nylon, and the like can be adopted.

  In addition, at least a later-described heat-sealed portion of the inner surfaces of the back sheet 2 and the air-impermeable sheet 4 needs to be configured to be heat-sealable. Specifically, a low-melting-point heat seal coating agent is applied to the heat-sealed portions of the back sheet 2 and the non-breathable sheet 4. Or the heat seal layer joined by heating is provided in the whole inner surface of the back surface sheet 2 and the air-impermeable sheet 4.

  For example, a polyethylene terephthalate sheet may be used on the outer surface side as a supporting base material for the back sheet 2 and the air-impermeable sheet 4, and a polyethylene film may be provided on the inner surface side as a heat seal layer. As the heat seal layer, for example, a polymer alloy made of polyethylene, polypropylene, and polystyrene may be used. The heat sealing layer of the back sheet 2 preferably has a higher melting point than the heat sealing layer of the non-breathable sheet 4.

  The sterilized paper 5 has air permeability through which a sterilizing gas such as ethylene oxide can freely flow so that sterilization can be performed, and further has a bacteria barrier property that can prevent invasion of bacteria after sterilization. As the sterilized paper 5, a non-woven fabric or paper having a substantially band shape can be used. For example, in this embodiment, a substantially strip-shaped porous nonwoven fabric made of high-density polyethylene fibers is used as the sterilized paper 5.

  The top sheet 3 and the back sheet 2 are disposed so as to overlap each other, and the peripheral edge thereof is closed leaving an opening 15 as a partial opening. Specifically, the edge portions corresponding to the three sides of the laminated top sheet 3 and back sheet are closed by the peripheral seal portion 11, and the opening 15 is formed in the side 1 a that is the remaining one side. ing.

  The peripheral seal part 11 is formed by heat-sealing the top sheet 3 and the back sheet 2 to each other. That is, in the peripheral seal part 11, the top sheet 3 and the back sheet 2 are thermally bonded by bringing the inner surface of the top sheet 3 and the inner surface of the back sheet 2 into contact with each other and heat-compressing.

  The opening 15 is an opening for putting the contents into the sterilization bag 1. The opening 15 is formed by not heat-sealing the top sheet 3 and the back sheet 2. Moreover, the opening part 15 is formed in the edge part by which the sterilization paper 5 is provided, ie, the side 1a side. In addition, after the contents are put into the inside of the sterilization bag 1 from the opening 15, the opening 15 is heat-sealed and sealed.

  The vicinity of the joint between the non-breathable sheet 4 constituting the top sheet 3 and the sterilized paper 5 is an unsealed portion 16 that is opened when the contents are taken out from the sterilized bag 1. Specifically, the non-breathable sheet 4 and the sterilized paper 5 are partially overlapped so that the non-breathable sheet 4 is on the outside. And in the overlapping part of the non-breathable sheet 4 and the sterilized paper 5, the inner surface of the non-breathable sheet 4 and the outer surface of the sterilized paper 5 are heat-sealed so as to be peeled off, and an unsealing opening seal portion 12 is formed. Yes.

  The unsealing seal portion 12 extends over substantially the entire width of the sterilization bag 1 so as to reach the peripheral seal portions 11 on both sides connected to the side 1a substantially in parallel with the side 1a where the opening 15 is formed. Thereby, the unsealing seal part 12 and the peripheral seal part 11 can be easily peeled off continuously.

  A non-sealed portion 14 that is not heat-sealed to the sterilized paper 5 is provided at the edge of the portion of the non-breathable sheet 4 that is overlapped with the sterilized paper 5, that is, in the vicinity of the end 4 a that is outside the opening seal portion 12. It is left. The non-seal portion 14 is a portion for picking up the non-breathable sheet 4 when the sterilization bag 1 is opened by peeling the opening seal portion 12.

2A is a cross-sectional view of the sterilization bag 1 showing a state in which the contents X are inserted, and FIG. 2B is a cross-sectional view of the sterilization bag 1 showing a state in which the contents X are stored. is there.
As shown in FIG. 2A, when the contents X such as medical supplies are put into the sterilization bag 1, the opening 15 is opened. As described above, since the opening 15 is formed at the edge on the side where the sterilized paper 5 is provided, it is possible to suppress the back sheet 2 and the sterilized paper 5 from sticking to each other. It is easy to open.

  Then, the contents X are inserted into the inside of the sterilization bag 1 through the opened opening 15. Since the opening 15 is formed at the edge of the sterilized paper 5 and the sliding between the inner surface of the sterilized paper 5 and the content X is good, the operation of putting the content X is easy.

  After the contents X is inserted, the opening 15 of the sterilization bag 1 is heat sealed as shown in FIG. That is, in the opening 15, the inner surface of the edge portion of the back sheet 2 and the inner surface of the edge portion of the sterilized paper 5 are thermally bonded to form the opening seal portion 13. Thereby, the sterilization bag 1 is sealed.

  And the sterilization bag 1 is sterilized in the state which the content X was accommodated and sealed. That is, the sterilizing gas flows into and out of the sterilization bag 1 through the sterilizing paper 5 having air permeability, and the contents X are sterilized. Then, the sterilization bag 1 in which the contents X are stored is transported to the medical site and stored.

  The method for sterilizing the contents X is not limited to the above. For example, the contents X stored in the sterilization bag 1 may be irradiated with radiation such as gamma rays or electron beams or ultraviolet rays. When a sterilization method using radiation or the like is employed, odor may be generated from the top sheet 3 or the back sheet 2 by irradiation with radiation or the like. However, the provision of the sterilized paper 5 in the storage bag 1 allows the odorous component to escape to the outside through the sterilized paper 5, so that the odor at the time of opening can be reduced.

FIG. 3 is a cross-sectional view showing a state in which the sterilization bag 1 is opened.
When the contents X are taken out from the sterilization bag 1 and used, as shown in FIG. 3, the non-seal part 14 of the opening part 16 is picked with a finger and pulled in a direction to separate the non-breathable sheet 4 from the sterilized paper 5. Thus, the sterilization bag 1 can be easily opened.

  That is, the user presses the vicinity of the edge of the sterilization paper 5 side of the sterilization bag 1 with one hand, grasps the non-seal part 14 with the other hand, and pulls the non-seal part 14 to widen the opening part 16. . Thereby, the opening seal part 12 is peeled off, and the opening part 16 of the surface sheet 3 is opened. In addition, since the non-sealing part 14 which is not heat-sealed to the sterilized paper 5 is formed at the edge of the non-breathable sheet 4 on the side of the opening part 16, it is easy to apply force to the opening seal part 12. Thereby, opening of the sterilization bag 1 becomes easy.

  As described above, referring to FIG. 1A, the heat seal layer of the back sheet 2 has a higher melting point than the heat seal layer of the non-breathable sheet 4. Thereby, in the peripheral seal part 11 of the sterilization bag 1, the inner surface of the top sheet 3 and the inner surface of the back sheet 2 are firmly bonded, and excellent bonding strength is obtained.

  In particular, since the sterilized paper 5 does not need to be peeled off from the back sheet 2 when removing the contents X, the peripheral seal part 11 and the opening seal part 13 (see FIG. 2 (B)) may be firmly joined. By increasing the joining strength of the peripheral seal portion 11 and the opening seal portion 13 for joining the sterilized paper 5 and the back sheet 2, the sterilized paper 5 and the back sheet 2 can be used when the contents X are inserted or transported. It can prevent peeling. Further, even after the sterilization bag 1 is opened, since the sterilized paper 5 is bonded to the back sheet 2 without being separated, there is little generation of debris and the sterilization bag 1 after use can be easily discarded.

  On the other hand, since the melting point of the heat seal layer of the non-breathable sheet 4 is lower than that of the heat seal layer of the back sheet 2, an unsealed seal portion that is a joint between the non-breathable sheet 4 and the sterilized paper 5 of the top sheet 3. 12 is heat-sealed with a suitable bonding strength so that it can be easily opened.

  With such a configuration, the opening seal portion 12 is removed while avoiding problems such as the peripheral seal portion 11 and the opening seal portion 13 of the sterilization bag 1 being peeled off and dropping the contents X during transportation or opening. It can be easily peeled off and opened.

  Moreover, it is also possible to form the said peripheral seal part 11 so that peeling is possible by setting suitably the joining strength in the peripheral seal part 11 which joins the air-impermeable sheet 4 and the back surface sheet 2. FIG. As a result, the non-breathable sheet 4 is peeled off from the sterilized paper 5 at the opening seal portion 12 and further peeled off to the peripheral seal portion 11 of the sterilization bag 1 to open the top sheet 3 largely as shown in FIG. It becomes possible. As a result, the contents X can be easily taken out.

  Further, as shown in FIG. 1A, the non-breathable sheet 4 of the top sheet 3 is formed larger than the sterilized paper 5. Thereby, the amount of expensive sterilized paper 5 used can be reduced and the cost of the sterilization bag 1 can be reduced while ensuring the ease of taking out the contents X. Further, by making the sterilized paper 5 small, there is an effect that the inside of the sterilization bag 1 can be easily seen.

  Further, as described above, since the opening seal portion 12 that becomes the opening portion 16 is formed on the top sheet 3, the sterilization bag is placed on a table or the like with the top sheet 3 facing upward, and the opening portion 16 is removed. Can be opened. Thereby, the surface sheet 3 can be opened widely with the contents X placed on the back sheet 2, and the contents X can be easily taken out.

The present invention is not limited to the above embodiment. For example, in the above example, an example in which the opening 15 is formed at the edge of the sterilized paper 5 is shown. However, the opening 15 is on the side 1b opposite to the side 1a where the sterilized paper 5 is disposed. It may be formed.
In addition, various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Sterilization bag 2 Back surface sheet 3 Surface sheet 4 Non-breathable sheet 5 Sterilization paper 11 Perimeter seal part 12 Opening seal part 13 Opening seal part 14 Non-seal part 15 Opening part 16 Opening part

Claims (2)

A non-breathable back sheet;
A top sheet in which the one side region is composed of a non-breathable sheet and the other side region is composed of breathable sterilized paper and laminated on the back sheet in plan view,
The inner surface of the topsheet and the inner surface of the backsheet are heat sealed together leaving a partial opening at the periphery,
The joint between the non-breathable sheet and the sterilized paper is partially overlapped so that the non-breathable sheet is on the outside, and the inner surface of the non-breathable sheet and the outer surface of the sterilized paper are heat-sealable Has been
At the edge of the portion of the non-breathable sheet superimposed on the sterilized paper, a non-sealed portion that is not heat sealed to the sterilized paper is left,
The back sheet and the non-breathable sheet each have a support base and a heat seal layer formed on the inner surface thereof,
The heat seal layer of the back sheet has a higher melting point than the heat seal layer of the non-breathable sheet,
The sterilization bag characterized in that the bonding strength between the sterilized paper and the back sheet is higher than the bonding strength between the sterilized paper and the non-breathable sheet . The sterilization bag according to claim 1 , wherein the opening is formed at an edge of the sterilized paper.

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