JP2004292044A - Liquid-containing packaging body, and method for using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid-containing packaging body in which seal strength of the liquid-containing packaging body and reliability of sealability of a bag are not degraded, the complicated operation or working step is not required, and the packaging body is reliably and easily opened, and used by folding the packaging body from an opening part. <P>SOLUTION: In an easily openable liquid-containing packaging bag in which a film A overlaps a film B and a peripheral edge thereof is heat-sealed, the film A is a laminate film including a layer of one-way straight cuttability and a thermal-bonding resin film layer, and the film B is a laminate film including a layer without one-way straight cuttability and a thermal-bonding resin layer. A pinching part in which a part of one side facing liquid content is connected to the film A and the film B, and the other part thereof is separated from the film A or the film B is provided on a peripheral edge part. The pinching part is located at a position in which a line extending from the pinching part along one direction is across the liquid content. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a bag for packaging a liquid-containing material such as absorbent cotton impregnated with a disinfectant or the like, and in particular, an easily-openable packaging bag or a packaging bag that can be easily opened and used without touching the liquid-containing material. About the method.
[0002]
[Prior art]
Conventionally, the sheet-like fiber material containing liquid such as water or alcohol for the purpose of disinfection or cleaning is stored in a container for hygienic reasons and the reason that the liquid evaporates if left in the air as it is. It is taken out and used as needed.
[0003]
The method of use is to directly pull out the liquid-containing sheet-like fibrous material accumulated and stored in a container such as a bottle from a narrow opening of the bottle, or to use a sticky seal film or the like for a previously opened mouth. There is a method such as peeling off the seal film when using it.
[0004]
However, the former method of drawing directly from a bottle requires a little hygiene care since it is directly drawn out by hand in addition to the drawbacks of many manufacturing steps. Also, the latter method of peeling off the seal film requires an adhesive film, which is difficult to process, and also requires attention to hygiene at the point where the finger is directly inserted into the container and dragged out. Was.
[0005]
As a method of improving this inconvenience, there is a method in which wet tissues are individually divided and sealed in plastic bags. However, this method solves the inconvenience of carrying, but has the following drawbacks in the reliability of opening, and is not reliable. Further, it is unavoidable that the liquid adheres to the hand at the time of use. In some cases, the alcohol was peeled off by alcohol or the like, resulting in rough hands. In particular, this was a considerable drawback in frequently used places such as hospitals.
[0006]
Consumers who have purchased products packed in heat-sealed and sealed plastic bags, can easily open the bags by hand. Generally, a method is provided in which a notch or the like is provided at the end and the bag is torn to open from the starting point, or a method in which the heat seal portion of the bag is easily peeled and the seal portion is peeled off and opened.
[0007]
As a typical example of the latter easily peelable packaging bag, a pillow-shaped packaging bag such as potato chips having a weak seal strength of the bag is well known. By pinching with a finger and pulling in opposite directions, the intersection between the upper or lower seal portion and the palm seal portion is peeled off, and the seal is peeled off to form an opening. However, this method has the drawback that the strength of the weak seal is not always uniform, and the degree of application of the force to pull the bag by both sides by hand varies from person to person, and it is not always possible to obtain a clear opening. Furthermore, since the seal strength is low, there is a concern that the seal portion will be damaged during the distribution stage.If the content is liquid, the risk of damage is greater and the bag will peel off and open at a stretch when opening, and the content will pop out There was an inconvenience.
[0008]
In the former case, for example, a three- or four-side sealed packaging bag or a pillow packaging bag having a notch provided at the end of the heat seal portion, the opening is formed by tearing the bag from the notch at the seal end of the bag. It is necessary to take out the contents from the opening.
[0009]
In that case, if the content to be taken out is easily broken, such as a bun, or is easily broken, such as a thin roasted rice cracker or a cookie, the content existing between the front and back films when tearing the film on the front and back of the bag. However, there is a disadvantage that the film may be torn while being sandwiched between the two films, and may be deformed or broken. Also, when tearing the bag from the same notch as described above to open the bag in which the contents in the tray are sealed, the tearing piece of the opening is often caught on the tray and cannot be opened smoothly.
[0010]
In order to prevent this, a non-adhesive part is formed from the end of the side to be sealed to the seal part, and two notches are cut away from the end of the non-adhesive part into the part of the adhesive part. An easy-open packaging bag has been proposed in which only one film between these two notches is picked and pulled with a finger, so that only one surface of the bag can be opened in a band shape with a notch interval width (Patent Document 1). 1). In this case, it is necessary to separate the front and back films at the notched seal portion at the time of opening, and the front and back films are peeled and separated by making the seal portion easily peelable. For this purpose, it is necessary to make the seal portion of the entire bag easily peelable or only the seal portion of the notch portion to be easily peelable. However, if the entire seal is made easy to peel, the seal portion at the distribution stage is required. There is a fear of damage. Further, in order to make the peeling property necessary for the opening partially, it is necessary to perform the peeling treatment only on the part.
[0011]
In addition, a method has been proposed in which a pillow packaging bag is provided with two notches at intervals in the gasket seal portion, and the bag is circumferentially opened by pinching and tearing the gasket seal portion between the notches (patented). Reference 2). However, also in this case, it is necessary to cut off the left and right films at the base of the joint seal portion, and for this purpose, by providing a fine scar at a portion corresponding to the base of the joint seal portion of the film on the opposite side to the film for which the unsealing proceeds, The film on the opposite side is cut off at that part and cut off. For this reason, there is a problem that a step of imparting a fine scar is separately required, and the strength of a portion where the scar is applied is reduced.
[0012]
In the opening method as described above, it is necessary to separate one film from the other film at the seal portion regardless of the shape of the bag. In other words, there is a difference between peeling a weakly adherent easily peelable seal and peeling the film easily and tearing the film, but in any case, the necessity of the peeling causes the above-mentioned problems. I was
[0013]
In particular, when the contents are liquid-containing materials such as absorbent cotton containing a disinfecting solution, in the opening by the notch that tears the film on the front and back of the bag simultaneously, the progress of the opening is hindered by the contents sandwiched between the front and back films. There were drawbacks that it could not be opened because it stopped, or the impregnated liquid material was squeezed out and spilled, or adhered to hands. In the case of a bag utilizing easy peelability as a weak seal with a seal strength of the bag, the level of the seal strength is low and the sealability is uneasy, and there is a risk of breakage in the distribution process. Also, when only one of the films on the front and back of the bag is opened with a predetermined width, the same seal strength and the film strength of the part where the scar is applied are uncertain, and the reliability of the bag's sealing is lacking. It was a major drawback.
[0014]
[Patent Document 1]
JP-A-10-230971
[Patent Document 2]
JP 2001-55248 A
[0015]
[Problems to be solved by the invention]
The present invention solves the above-mentioned disadvantages of the prior art, does not reduce the sealing strength of the liquid-containing package and the reliability of the sealing property of the bag, and does not require a complicated operation processing step for easy opening. It is an object of the present invention to provide a liquid-containing package or a method of using the liquid-containing package, which can be easily opened and can be used by directly bending the opening opening as a folding line without directly touching the contents of the liquid-containing package. And
[0016]
[Means for Solving the Problems]
The present inventors have made intensive studies in view of the above-mentioned disadvantages of the prior art, and have reached the present invention. That is, the present invention is any one of the following (1) to (9).
[0017]
(1) An easily-openable liquid-containing material packaging bag in which a heat-fusible resin film layer of a film A and a heat-fusible resin film layer of a film B are superposed on each other and heat-sealed at a peripheral edge thereof. The film A is a laminated film including a film layer having a linear cut property in at least one direction and a heat-fusible resin film layer, and the film B is a film layer having no linear cut property and a heat-fusible resin. A layered film including a layer, a part of a side facing the liquid content is connected to the film A and the film B, and another part is the film A and the film B By separating from the finger, at least one knob portion that can be picked by a finger is provided, and further, the position of the knob portion is a straight line extending along the one direction from the knob portion to the liquid-containing material. cross Easy-to-open liquid-containing material packaging bag is location.
[0018]
(2) The outer edge of the packaging bag is substantially line-symmetric with respect to the axis of symmetry parallel to the one direction, and one or more knobs are provided substantially line-symmetric with respect to the axis of symmetry. 1) The packaging bag for easy-opening liquid content according to 1).
[0019]
(3) The easily-openable liquid-containing material packaging bag according to claim 1, wherein the packaging bag is a four-side seal bag, and the knob is provided substantially at the center of the length of the two opposite seals. .
[0020]
(4) The width in one direction of the heat-sealed peripheral portion near the knob portion is configured to be wider than the width of the other peripheral portion, (1) to (3). Easy-openable liquid-containing material packaging bag.
[0021]
(5) The liquid-containing material is a sheet-like liquid-containing fibrous material, and the width in the direction perpendicular to one direction is wider than the width in the direction perpendicular to the one direction in the knob portion. The packaging bag for easy-opening liquid content according to any one of the above.
[0022]
(6) A laminate in which the film A is composed of one or more layers of a polyolefin-based resin film, a polyamide-based resin film, or a polyester-based resin film having a linear cut property and a heat-fusible resin. The easily-openable liquid-containing material packaging bag according to any one of the above (1) to (5), which is a film.
[0023]
(7) An easily-openable package in which the liquid-containing substance is sealed between the film A and the film B, wherein the film A has a film layer having a linear cut property in at least one direction and a heat-fusible resin film layer. Wherein the film B is a laminated film including a film layer having no linear cut property and a heat-fusible resin film layer, and the film A and the film B have a film peripheral portion. The heat-fusible resin film layers are arranged in contact with each other, and the periphery of the film is heat-sealed to form a sealed state. The periphery of the film has one side facing the liquid-containing material. Part is connected to the film A and the film B, and another part is provided with at least one knob portion separated from the film A and the film B, The position of the knob portion, easy-open packaging body line extended along the direction from the handle portion is positioned to cross the liquid content.
[0024]
(8) An easy-open packaging bag in which the film A and the film B are overlapped with each other and the peripheral edge portion is heat-sealed, wherein the film A is heat-sealed to a film layer having a straight-line cut property in at least one direction. The film B is a laminated film including a film layer having no linear cut property and a heat-fusible resin film layer, and the film A and the film B are: The heat-fusible resin film layers are overlapped with each other in contact with each other, and a part of the peripheral edge part on the side away from the outer edge of the peripheral part is connected to the film A and the film B; A portion is provided at least one position where the knob is separated from the film A and the film B, and the position where the knob is provided is located in one direction from the knob. Easy-open packaging bag along a straight line that is an extension of it is positioned across the space surrounded by said film B and the film A and the peripheral portion.
[0025]
(9) The knob is pulled out in the direction in which the film A has a straight-line cut property, and an opening that is long in the direction is provided. Then, the opening is bent in a direction substantially parallel to the direction so that the opening becomes a projection. The method of using the easily-openable package according to the above (7), wherein the package is bent along a line to expose the liquid-containing material from the opening.
[0026]
BEST MODE FOR CARRYING OUT THE INVENTION
The present invention will be described with reference to the drawings. FIG. 1 is a conceptual diagram schematically illustrating an example of an easily-openable package. The package 1 is composed of a film A on the front side (the film A is located on the front side of the paper surface in FIG. 1) and a film B on the back side (the film B is located on the back side of the paper surface in FIG. 1). Inside, absorbent cotton 5 impregnated with disinfecting alcoholic water is packaged.
[0027]
The film A and the film B are vertically heat-sealed portions 2-1 and 2-2 which are long in a direction substantially perpendicular to the straight-line cutting direction of the film A, and the upper and lower horizontal heat-sealing portions 3-1 which are substantially parallel to the straight-line cutting direction of the film A. In steps 3 and 2, the peripheral edges of the films are in contact with each other and are heat-sealed, thereby sealing the absorbent cotton 5 stored in the internal space.
[0028]
Further, the package 1 is provided with a notch 4 which is a structure for starting tearing in the vertical heat seal portion 2-1. The film A has a straight-line cutting property and is arranged such that the straight-line cutting direction is the direction of the double-headed arrow in FIG.
[0029]
The film A having a linear cut property is a laminated film including a film having a linear cut property in at least one direction and a heat-fusible resin film layer. Here, the linear cut property literally means a property that is easily torn linearly in one direction, and specifically, a property defined by the following measurement method. That is, the film is cut into a square of 250 mm square along the flow direction and the direction perpendicular to the flow direction during the production of the laminated film. As shown in FIG. 2, two notches are formed at the edges of the cut piece perpendicular to the direction in which the straight cut property is tested, at intervals of 30 mm. The film is torn in a direction parallel to the straight-line cutting direction by gripping a 30 mm cut with a finger (the film is cut as indicated by a dotted line in FIG. 2).
[0030]
Generally, depending on the orientation direction of the molecules and the orientation direction of the components blended with the resin, the degree of tearing of the film may vary depending on the tear direction of the film, so the above tear test is applied to the left and right directions of the film. The straight-line cutability is determined based on the width of the leading end “X” of the film in which the leading end of the tear becomes thinner. In any direction, a film having a value of X less than 5 mm or a tear that does not reach the opposite edge is referred to as a film having no linear cut property.
[0031]
FIG. 3 is a schematic diagram of a cross section of the film A on the front side and the film B on the back side of the package 1, and the film A on the front side having a linear cut property is a base film layer 6-1 and a film layer having a linear cut property. 7 and a laminated film of the heat-fusible resin film layer 8-1. Depending on the required characteristics of the bag, the order of lamination of the base film layer 6-1 and the film layer 7 having a linear cut property may be reversed, or the base film layer 6-1 may not be provided. Although not shown, other intermediate film layers may be separately laminated. Further, in FIG. 3, a film having a linear cut property is used as a part of the layer structure to impart a linear cut property to the film A. Other methods are described in, for example, JP-A-9-156649. Two films having different molecular orientations are laminated back-to-back, that is, a film layer of a combination in which two films form a set and exhibit a linear cut property is part of a layer structure. The film A may be used to impart a linear cut property.
[0032]
The other film B constituting the back side of the bag is a film having no linear cut property, and is a laminated film of the base film layer 6-2, the intermediate film layer 9, and the heat-fusible resin film layer 8-2. Consists of However, the intermediate film layer 9 may not be provided, and although not shown, another intermediate film layer may be laminated.
[0033]
For the base film layers 6-1 and 6-2, polyolefin-based resin films such as polypropylene, polyamide-based resin films such as nylon 6, nylon 66 and nylon 12, polyester-based resin films such as polyethylene terephthalate and polybutylene terephthalate, etc. And the like are preferably used.
[0034]
The film layer 7 having a linear cut property includes a uniaxially stretched or uniaxially stretched polyolefin resin film such as a uniaxially stretched polyethylene film or a uniaxially stretched polypropylene film, or a nylon 6 film described in, for example, JP-A-7-113015. A biaxially stretched polyamide resin film obtained by mixing a polymetaxylylene adipamide resin with a resin and devising a layer separation structure and stretching conditions, or a polyethylene terephthalate resin as described in, for example, JP-A-11-300916. For example, a biaxially stretched polyester-based resin film obtained by mixing a polybutylene terephthalate resin and devising a layer separation structure and stretching conditions is used.
[0035]
Examples of the heat-fusible resin film layers 8-1 and 8-2 include low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear low-density polyethylene, and copolymer resins of vinyl compounds copolymerizable with ethylene. Polyethylene-based resin film or polypropylene-based resin film. It is preferable that the types of the resin of the heat-fusible resin film layers 8-1 and 8-2 are the same.
[0036]
When the bag needs gas barrier properties such as water vapor and oxygen, and aroma barrier properties in storing the filled contents, a polyvinylidene chloride resin layer or ethylene vinyl is used as the base film layers 6-1 and 6-2. Select a film coated with a resin layer mainly composed of an alcohol resin, a film on which a metal oxide, a metal or the like is deposited, or a film having a gas barrier property as the intermediate film layer 9, for example, a metal foil such as aluminum, polyvinylidene chloride, or the like. Films such as resin films, ethylene vinyl alcohol resin films, and coextruded films of these with other resins can be laminated. Further, when rigidity, design, etc. are required for the film, paper can be laminated.
[0037]
The peripheral portions of the film A and the film B are heat-sealed according to a standard method with the heat-fusible resin film layers 8-1 and 8-2 facing each other, and form the front and back of the package 1. The method for producing the films A and B is not particularly limited, and a dry or wet lamination method in which the films are laminated with an adhesive, a sand lamination method in which the films are laminated with a molten polyethylene or the like extruded from a T die, An extrusion lamination method of laminating by extruding molten polyethylene or the like from a T die, a thermal lamination method using a low melting point heat-fusible resin, and the like are used according to the purpose.
[0038]
In the vertical heat seal portion 2-1 which is long in the direction of the straight line cut in the direction of the arrow and the vertical direction of the package 1, a notch portion which can be pinched with a fingertip by a notch 4 penetrating the heat-sealed film A and film B. 4-3 are provided in the direction in which the film A is easily torn using the linear cut property. Specifically, the knob 4-3 remains connected to the films A and B in the direction facing the absorbent cotton 5 (or away from the outer edge of the heat seal portion 2-1). Yes, the other parts are separated from the films A and B by the cuts 4.
[0039]
That is, the notch 4 is arranged such that the axis of symmetry of the notch 4 is arranged substantially in parallel with the straight line cut direction of the film A in the direction of the arrow, and the notch 4 is formed in the bag along the straight line cut direction of the film A. It is designed to be easily pulled out by hand, including the part closest to the outer edge, while the part farthest from the outer edge of the bag along the straight cut direction is not cut but remains connected to the film. Has been to be.
[0040]
In the case where one notch 4 is provided, it is preferable that the position of the notch 4 is located in the heat seal portion substantially at the center in the length direction of the heat seal portion 2-1 as shown in FIG. By doing so, it can be held by hand without any incongruity when used in the usage method described later, and it becomes an easy-to-use mode.
[0041]
Two or more cuts 4 can be provided, and in that case, as shown in FIG. 8A, the direction in which the film A of the package 20 has a linear cut property (may be referred to as a linear cut direction). It is desirable to arrange the cuts 22 and 23 so as to be substantially line-symmetric with respect to the axis of symmetry of the package 20 which is substantially parallel to the above. In this case, it is preferable that the cuts 22 and 23 are arranged to be separated from each other to some extent. By doing so, even if the used portion is contaminated, it is possible to effectively use the unused portion that is considered to have not been contaminated yet.
[0042]
In addition, as shown in FIG. 8B, the notch 33 may be provided at a position where the opening can be provided symmetrically, although the position is not exactly symmetrical with respect to the notch 32 with respect to the axis of symmetry 31. . Furthermore, this symmetry does not need to be strict, as long as the contents do not fall out of the bag or the used parts are not too close, as long as they are not uncomfortable in use, and if they are almost symmetrical. It is enough.
[0043]
In any case, the notch 4 is a starting point of the opening formed in the film A when the notch 4 is an end point and is torn therefrom. In the method of using this package, which will be described later, this opening is used as a substantially folding line, and the package 1 is folded in two so that the opening becomes a convex, whereby the contents are removed from the opening. Is for exposing the absorbent cotton 5 to the outside of the package. Therefore, the position of the cut 4 is provided at a position where the contents can be exposed by providing the opening. For this purpose, when a straight line is extended from a cut or a knob along a straight line cutting direction, the straight line is provided at a position crossing the content. Since the notch or the knob has a certain width in the direction perpendicular to the straight-line cutting direction, this straight line is not one, but any straight line is provided with a cut at a position crossing the contents. This prevents the contents from unexpectedly coming off the opening.
[0044]
As a specific example of the shape of the notch 4, a case where the notch 4 is composed of only a notch notch 4-1 exemplified by notching a U-shape or a U-shape or a V-shape in FIGS. Or a band cut 4-2 having a smaller width in the straight-line cut direction than the knob cut 4-1 as illustrated in (d) to (f). You may do it. Incidentally, (d) or (e) is a curved shape using a circle, an ellipse, or the like, and a polygonal shape using a triangle or a quadrangle of (f) is also exemplified.
[0045]
The band notch 4-2 may be of two parallel straight shapes or of a tapered shape with its tip tapering away from the notch. Among these, the preferred shape of the cut 4 is the shape of (d) or (e).
[0046]
With such a shape, when the grip portion 4-3 is caused to be caught by a finger and is torn in a direction in which the film A is easily torn (rightward in FIG. 1) using the linear cut property, the grip portion 4-3 is used. The position of -3 is easy to recognize, and easy to pick and slip. Therefore, even when the picking force is weak, such as a child, the elderly, or the sick, or when the finger or fingers are wet with oil, water, etc. and are slippery, the band can be securely pulled from the knob 4-3 to the band 4-4. Since the tearing force can be concentrated on the cut 4-2, the opening can be reliably and cleanly opened. In addition, in order to make the knob portion 4-3 easy to grip and make it hard to slip, a process for preventing slippage such as embossing may be applied to this portion.
[0047]
FIG. 5 is a partially enlarged view of a portion where a structure for starting the tearing of the packaging bag 1 is provided. The notch 4 has a structure for starting tearing having the notch notch 4-1 and the band notch 4-2 having a smaller width following the notch notch as described above. In the vertical heat seal portion 2-1 which is long in the vertical direction, the heat seal portion 2-1 is provided in a direction in which it is easily torn along the straight line cutting direction. The maximum width "W1" of the knob cutout 4-1 in FIG. 5 is 5 mm or more and 30 mm or less, and preferably 10 mm or more and 20 mm or less. When it is 5 mm or more, it is easy to pick. When it is 30 mm or less, when the knob 4-3 is picked and the bag is opened, depending on the position where the knob 4-3 is picked, a force is obliquely applied to the cut 4-2. Thus, the phenomenon that the force is not effectively transmitted to the band notch 4-2 and the unsealing does not proceed smoothly does not easily occur.
[0048]
The width "W2" of the band notch 4-2 in FIG. 5 is preferably about 70 to 15% of the width W1 of the knob 4-3, and this width W2 corresponds to the tearing start width when opening. Specifically, it is determined by the band-like opening width required for the bag. The distance “Y” between the end of the band cut 4-2 and the inner heat seal end of the bag is preferably about 1 to 10 mm, and if it is 10 mm or less, a large force is not required due to tearing at the start of opening, and the heat seal width is reduced. Also fall within a reasonable range. Further, when Y is 1 mm or more, unintended tearing between the Y distances during bag production and distribution makes it difficult to cause bag breakage.
[0049]
In order to prevent unintended widening of the seal width of the vertical heat seal portion 2-1 provided with the notch 4 and to prevent unintended bag breakage, for example, 10 shown in FIG. 6A or FIG. As in the case of -1 or 10-2, the width of the vertical seal portion 2-1 in the vicinity of the cut 4 in the straight-line cutting direction can be partially made to protrude inside the bag from the width of the other heat seal portions so as to be wider. preferable. In FIG. 6, the shape of the protruding portion may be a curved shape, a combined shape of straight lines, or a combined shape of a curved line and a straight line, and is not particularly limited. With such a projecting structure, the size of the knob 4-3 and the distance "Y" between the tip of the band cut 4-2 and the inner heat seal end of the bag are not affected by the seal width of the bag. Can be controlled.
[0050]
Although FIG. 1 shows an example in which the cut 4 is provided in the vertical heat seal portion 2-1 on the left side in the drawing, the cut 4 may be provided in the right vertical heat seal portion 2-2. The heat seal portion may be provided at two places at the same time, or a total of two or more vertical heat seal portions on the left and right sides may be provided.
[0051]
FIG. 7 shows a state in the middle of opening of the package 1 of FIG. 1, and the opening is performed with the front side film A turned up (toward the front side in the drawing) and the knob 4-3 raised with a finger. The bag is pulled in the straight-line cut direction indicated by the arrow on the front film A of the bag, that is, in the direction perpendicular to the long direction of the vertical seal portion 2-1 provided with the cuts 4 (the right direction in the drawing). Since the film 7 having the linear cut property is laminated on the front side film A, the front side film A is torn in the linear cut direction by the linear tear line 11 having substantially the same width as the width W2 of the band cut 4-2, and is cut in the linear cut direction. To form a long opening.
[0052]
On the other hand, since the film B on the back side of the bag does not have a straight-line cut property or has a small straight-line cut property, a tear force in the linear direction is given by being affected by the tear force in the linear direction of the front-side film A having the straight-cut property. However, at a point slightly inside the sealing edge inside the package 1, the tapered shape like a tear line 12 is torn and torn, a part is cut off, and separated from the film B together with the opening piece 13. As a result, almost only the front side film A of the bag can be cut off as the opening piece 13. In this manner, the package 1 that can be easily opened has a seal portion that is easily peelable and does not need to be easily torn when sealing the film on the back side. A can be opened by tearing only A at a predetermined width.
[0053]
Further, the tearing by the unsealing piece 13 reaches the vertical heat seal portion 2-2 on the opposite side along the straight line cutting direction from the vertical heat seal portion 2-1 which has started the opening and stops. Therefore, the opening piece 13 does not remain as it is on the package 1 and is not scattered as dust.
[0054]
In this manner, the opening is provided substantially at the center of the package shown in FIG. Here, the opening portion of the bag from which the front film A of the package 1 is cut is bent substantially so that the front film A is on the mountain fold side (the back film B is on the valley fold side). That is, the opening is bent into two so that the opening becomes a projection. FIG. 9 is a cross-sectional view showing the two-folded use state.
[0055]
By doing so, since the contents 5 are exposed from the opening of the film A, the liquid contents can be used without taking out the contents from the bag and without wetting the finger with the impregnating liquid. Further, in this case, the impregnating liquid can be squeezed out of the liquid substance by pressing the folded and overlapped portion of the bag with a finger.
[0056]
In addition, since it is not preferable that the content jumps out of the opening, the width of the content in the direction perpendicular to the straight-line cutting direction is preferably larger than the width of the opening in the corresponding direction.
[0057]
The packaging bag constituting this packaging body is particularly suitably used for packaging disinfectant cotton / wet tissue containing an alcohol component, and other cotton containing a lotion, etc., which are hermetically sealed. An explanatory diagram or text for recognizing the start portion or understanding the tearing method may be printed. Hereinafter, specific examples will be described.
[0058]
Embodiment 1
As the film A, a 12 μm-thick longitudinally cut polyethylene terephthalate film emblem PC manufactured by Unitika Ltd. and a 7 μm-thick aluminum foil were placed at a density of 0.920 g / cm from a T-die through a polyurethane anchor coating agent. ³ Then, a low-density polyethylene having a thickness of 15 μm was extruded and bonded by a sand lamination method, and then the low-density polyethylene having a thickness of 40 μm was extruded and laminated on the aluminum foil side. A laminated film was obtained in the same manner as film A, except that a normal polyethylene terephthalate film having a thickness of 12 μm and having no linear cut property was used instead of the linear cut polyethylene terephthalate film.
[0059]
Next, the straight cut direction of the film A is made parallel to the width direction of the bag so that the heat-fusible resin layers of the film A and the film B are opposed to each other. To obtain a bag having an outer width of 70 mm and a length of 80 mm.
[0060]
Into this bag, a piece of absorbent cotton sheet impregnated with alcohol having a width of 40 mm, a length of 50 mm, and a thickness of 3 mm as a content is inserted from the opening of the bag, and the opening is heat-sealed with a width of 10 mm to form a four-sided seal bag. A U-shaped cut shown in FIG. 4A was provided at a substantially central portion in the length direction (40 mm from the end in the length direction). This cut has a width of 6 mm in a direction perpendicular to the straight line cut direction of the band cut, is opened toward the inside of the bag as shown in FIG. 1, and the symmetric axis of the cut is arranged substantially parallel to the straight cut direction of the film A. Notch.
[0061]
The U-shaped cut was raised with a finger from the side of the film A, which was pinched and pulled in the straight-line cutting direction of the film A (to the right as viewed in FIG. 1) to tear open the contents. The tip of the film B is tapered at 5 mm from the seal edge inside the bag and is partially cut off, and only the front film A can be torn in a strip shape as an opening piece of about 6 mm width. Was. At this time, the absorbent cotton was not crushed to squeeze out the impregnating liquid. The opening was stopped at the opposed vertical heat seal portion, and the opened piece was attached to the bag without being cut off from the bag.
[0062]
The opened portion of the opened bag, which has been torn without being cut off, is bent as shown in FIG. 8 as a folding line, and is exposed without being taken out from the absorbent cotton sheet bag impregnated with alcohol, thereby disinfecting the patient. The contact disinfection could be performed without wetting the hand to the required parts. After disinfection, the opened bag could be easily discarded in a waste container, and the operability was extremely excellent.
[0063]
The method of exposing and using the liquid-containing material from the package as described above was able to handle the liquid-containing material without touching the liquid-containing material with only a simple operation. For this reason, there was no concern about hygiene contamination, and there was no possibility that alcohol adhered to the hands of many workers working in hospitals and the like, and the affected part, a part of the skin, etc. could be wiped. In addition, when working in large quantities, there is no need to remove the contents one by one, and the work can be performed in a short time. Disposal after use was sanitary without the need to cut off the opened piece from the bag, so that garbage was not scattered.
[0064]
[Comparative Example 1]
A package similar to that of Example 1 was obtained except that the laminated film B of Example 1 was used on the front side of the bag, that is, both the front and back films A and B of the bag were not unidirectionally cut. . In this package, a single absorbent cotton sheet containing alcohol was inserted from the opening as the contents in the same manner as in Example 1, and then the opening was sealed to form a four-sided sealed bag. Further, the same U-shaped cuts as those of the package of Example 1 were provided at the same positions.
[0065]
This U-shaped cut was raised with the finger from the front side film B side of the bag, and was pinched and pulled open in the same direction as in Example 1. When the back side film B of the bag was not cut off from the sealing edge, absorbent cotton was removed. The film was sandwiched between the front and back films, and the progress of the opening was prevented. When neglecting it and forcibly tearing it, the absorbent cotton was crushed and the alcohol was squeezed out, the film on the front and back was torn to the right and the tearing was unstable, the stable and smooth opening was not possible, and the object of the present invention could not be achieved .
[0066]
【The invention's effect】
There is no decrease in the seal strength of the liquid-containing package and the reliability of the bag seal. No complicated operations or processing steps for easy opening are required. By bending the opening as a bending line, it can be used without directly touching the liquid content as the content.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram schematically showing an example of an easily-openable package.
FIG. 2 is a conceptual diagram illustrating a method for measuring a straight cut property.
FIG. 3 is a schematic cross-sectional view showing a laminated structure of a film A and a film B.
FIG. 4 is a diagram showing an example of an opening start notch shape.
FIG. 5 is an enlarged view of the vicinity of a cut 4 in the package 1;
FIG. 6 is a conceptual diagram of an example in which the width of a heat seal portion near the opening start notch is increased.
FIG. 7 is a conceptual diagram showing a state in which the package 1 is being opened.
FIG. 8 is a schematic view showing an example of a package provided with two cuts.
FIG. 9 is a cross-sectional view illustrating a use state in which the easily-openable package is folded into two after being opened.
[Explanation of symbols]
A Film A (laminated film with straight-cutting properties)
B Film B (Laminated film without straight cut property)
1 Easy-open packaging
2-1、2-2 Vertical heat seal part
3-1、3-2 Horizontal heat seal part
4 Notch
4-1 Notch cut
4-2 Notch
4-3 knob
4-4 Obi
5 Liquid contents
6-1、6-2 Base film
7 Straight cut film
8-1, 8-2 Heat-fusible resin film
9 Intermediate film
10-1, 10-2 Protruding heat seal part
11 Tearing line
12 tear line of film B
13 Opening pieces
21 Symmetry axis
22, 23 notch
31 Symmetry axis
32, 33 cut

Claims (9)

An easily-openable liquid-containing packaging bag in which the heat-fusible resin film layer of the film A and the heat-fusible resin film layer of the film B are superimposed on each other and heat-sealed at the peripheral edge thereof. A laminated film including a film layer having a linear cut property in at least one direction and a heat-fusible resin film layer, wherein the film B includes a film layer having no linear cut property and a heat-fusible resin layer. A part of the side facing the liquid content is connected to the film A and the film B, and another part is separated from the film A and the film B on the peripheral edge portion. Thereby, at least one knob portion that can be picked by a finger is provided, and furthermore, the position of the knob portion is such that a straight line extending along the one direction from the knob portion crosses the liquid content. so Easy-open liquid-containing product packaging bags that. 2. The package bag according to claim 1, wherein an outer edge of the packaging bag is substantially line-symmetric with respect to the axis of symmetry parallel to the one direction, and one or more knobs are provided substantially line-symmetric with respect to the axis of symmetry. 3. Easy-open packaging bag containing liquid. 2. The easy-opening liquid-containing material packaging bag according to claim 1, wherein the packaging bag is a four-side seal bag, and the knob portion is provided substantially at the center of the length of the two opposite seals. 4. The easy-opening liquid-containing liquid according to claim 1, wherein the width in the one direction of the heat-sealed peripheral edge near the knob is configured to be wider than the width of the other peripheral edge. Thing packaging bag. The liquid-containing material is a sheet-like liquid-containing fibrous material, and a width in a direction perpendicular to one direction is wider than a width in a direction perpendicular to the one direction in a knob portion. Easy-opening liquid-containing material packaging bag. The film A has a linear cut property, and is a laminated film composed of one or more layers of a polyolefin-based resin film, a polyamide-based resin film, or a polyester-based resin film, and a heat-fusible resin. The easily-openable liquid-containing material packaging bag according to any one of claims 1 to 5, characterized in that: A liquid-containing material is an easily-openable package sealed with a film A and a film B, wherein the film A includes a film layer having a linear cut property in at least one direction and a heat-fusible resin film layer. It is a laminated film, wherein the film B is a laminated film including a film layer having no linear cut property and a heat-fusible resin film layer, wherein the film A and the film B The adhesive resin film layers are arranged in contact with each other, and the peripheral edge of the film is heat-sealed to form a sealed state, and the peripheral edge of the film has a portion facing the liquid-containing material. At least one knob connected to the film A and the film B, and another part of which is separated from the film A and the film B, is further provided. Position of the saw unit, easy-open packaging body line extended along the direction from the handle portion is positioned to cross the liquid content. A film A and a film B are superimposed on each other, and the peripheral portion is heat-sealed. The film A is a film layer having a linear cut property in at least one direction and a heat-fusible resin film. The film B is a laminated film including a film layer having no linear cut property and a heat-fusible resin film layer, and the film A and the film B are The adhesive resin film layers are overlapped in contact with each other, and at the peripheral edge, a part of the side away from the outer edge of the peripheral edge is connected to the film A and the film B, and the other part is the At least one knob portion separated from the film A and the film B is provided, and the position where the knob portion is provided is located along the one direction from the knob portion. Easy-open packaging bag stretched straight line is positioned across the space surrounded by said film B and the film A and the peripheral portion. The knob is pulled out in a direction in which the film A has a straight-line cut property, and a long opening is provided in the direction. Subsequently, the opening is bent along a bending line in a direction substantially parallel to the direction so that the opening becomes a projection. The method for using an easily-openable package according to claim 7, wherein the liquid-containing substance is exposed from the opening.

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