JP2006069663A - Pillow package - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flexible packaging bag which can be easily opened by cutting a pillow package and a pillow package mounted with a zipper in the lateral direction although a palm-joint part in the vertical direction exists without spoiling sealabilities of the original pillow package. <P>SOLUTION: In the pillow package, an upper end part and a lower end part are sealed in the lateral direction and the palm-joint part exists in the vertical direction. A means for cutting the palm-joint part exists at least one position of the side end of the palm-joint part, and a region having the cutting means is brought into close contact with the surface of the pillow package. In addition, a means for opening the pillow package exists on the side end of the pillow package on the side to which the side end of the palm-joint part faces and at a position approximately in parallel to the cutting means. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a pillow package having an easy-open mechanism suitable for packaging solids such as foods, in particular, strips such as corn flakes, and a method for manufacturing the same. The present invention relates to a pillow package with a zipper and a method for producing the same.

  Conventionally, in order to prevent deterioration of food when packaging food, etc., a pillow package with high sealing performance that heat-sealed the three sides of the upper end, lower end, and palm (back) is widely used. It has been. Such a pillow package can be provided with functions such as moisture resistance, gas barrier properties, light shielding properties, puncture resistance, and the like by selecting a film constituting the main body. Such a film is usually composed of a base film layer made of a base film, an intermediate layer made of a film having a function, and a sealant layer made of a sealant film. By selecting as appropriate, the pillow package can be made into a flexible packaging bag made of a tough laminated resin film having excellent contents preservability.

  These soft packaging bags made of laminated resin film are extremely tough and are not always easy to open with bare hands. In particular, in a pillow package having a vertical palm portion on the back of the package body, even if an attempt is made to open the pillow package from one side edge to another side edge in a direction perpendicular to the palm portion, Due to the presence of parts, it was not easy to cut completely. In particular, if the contents (packaged items) are box bodies, starting the opening process may easily apply tension to the opening line, which may assist opening, but the contents may be a small piece such as cornflakes. In some cases, such a situation cannot be expected, and the opening is particularly difficult.

  As means for solving such a problem, a package (Patent Document 1) in which a perforated cut line is provided on a base film constituting a palm portion located on a planned cutting line of a pillow package, or a pillow package. A notched package with a notch formed on one of the left and right edges and the backrest (Patent Document 2), or a tangent portion between the package body and the palm portion, that is, a so-called root portion of the palm portion. A package having a surface portion has been proposed (Patent Document 3).

  However, although all of the proposed packages have improved openability, it is still difficult to say that they are sufficiently satisfactory. In the inventions described in Patent Documents 1 and 2, the unsealing ability of these packages is provided to cut the palm portion even if it is attempted to cut from the palm portion side end direction toward the root direction. This is because the perforated cut line or notch is not in close contact with the package body, and the flexible packaging bag is flexible, so that the force to tear the joints is not sufficiently transmitted. It is believed that there is. Further, in the invention described in Patent Document 3, since the direction of breaking the palm portion proceeds from the base of the palm portion toward the end of the palm portion, the force for cutting the palm portion simultaneously seals the palm portion. As a result of acting as a force to be peeled off, it is considered that the cut line is interrupted when the seal portion peels off.

  On the other hand, soft packaging bags equipped with zippers are widely used in the fields of confectionery, foods and the like that particularly require recloseability. In recent years, regarding a soft packaging bag equipped with such a zipper, a continuous manufacturing method of a soft packaging bag with a zipper in the shape of a pillow package having a palm portion on the back has been established (Patent Document 4 and Non-Patent Document 1).

  However, the openability of the pillow package equipped with such a zipper has not been sufficiently satisfactory. If the pillow package does not have a zipper, it can be torn in the same vertical direction as the palm part, but in the case of the pillow package with the zipper, the zipper is mounted in the horizontal direction. This is because, in the upper part of the zipper, it must be opened laterally so as to be parallel to the zipper.

  For this problem, an easy peel to keep the sealing and easy opening even if the perforation for cutting the pillow package in the transverse direction is attached to the upper part of the zipper and the perforation. A bag provided with a weak seal portion has been proposed (Patent Document 5).

However, since this package has hermeticity secured by the weak seal portion, the sealability of the package is significantly lower than that of a normal pillow package, and inherently has the sealing function of the pillow package. It has become something that can not be fully demonstrated.
JP-A-8-91392 (pages 1-2, page 3, right column, lines 37-41, FIG. 1) JP-A-11-263374 (pages 1 and 2, FIG. 1) Japanese Unexamined Patent Publication No. 2000-103437 (pages 1 and 2, FIG. 1) Japanese Patent Laid-Open No. 10-296884 (pages 1 and 2) JP 2003-246332 A (pages 1 and 2, FIG. 1) Kenichi Masuda, “Overview of Vertical Pillow Wrapping Machine Base (VFFS) Inline Zipper Mounting Pouch System”, Packaging Technology, August 2002, p.14-17

  As described above, in the conventional soft packaging bag in which the opening property of the pillow package is improved, the opening property is not always satisfactory. Furthermore, in the easy-open pillow package equipped with a zipper, a soft packaging bag having sufficient sealability inherent to the pillow package has not been provided so far.

  It is an object of the present invention to provide a pillow package having an easy-opening mechanism that can solve the problems of the prior art and a method for manufacturing the pillow package.

  In order to solve the above-described problems, in the present invention, first, a pillow package body in which an upper end portion and a lower end portion are sealed in a lateral direction and has a palm portion in a vertical direction, the side of the palm portion Means for cutting the palm portion in at least one of the end regions, the region having the cutting means is in close contact with the surface of the pillow package body, and the side end portion of the palm portion is Provided is a pillow package having means for opening the pillow package at a position substantially parallel to the cutting means in the side end region of the opposite pillow package.

  Furthermore, as a preferable manufacturing method of the pillow package of the present invention, the back surface has a heat sealing property, the surface has a structure having no heat sealing property, and one side end portion of the surface of the film. The sealant is applied intermittently with a length including the palm portion regions A to B, 1.5 to 5.0 times the width of the palm portion, and the length of the pillow package as one cycle. The step of continuously supplying the film, the step of forming the film body into a cylindrical shape with the surface facing outside, and the back surfaces of both ends of the film formed into a cylindrical shape are overlapped and sealed A step of forming a palm portion, a step of providing means for cutting the palm portion, a step of bending the palm portion so as to be in contact with the surface of the package body, and a seal at the lower end of the package body using a heat seal bar Process, and if necessary, fill the contents Using the two substantially parallel heat seal bars, sealing the upper end of the packaging body, sealing the palm portion area A located at the upper end of the palm portion and the surface of the packaging body, and the palm portion region B And a process for simultaneously sealing the surface of the package and a process for providing means for opening the pillow package are also provided.

  According to the present invention, the pillow package body can be cut in the horizontal direction and easily opened without impairing the sealing performance of the normal pillow package body, regardless of the presence of the vertical palm portion. In particular, when the pillow package has a zipper, it can exert its power. In addition, a pillow package having such a zipper can be easily and continuously manufactured using a known apparatus and method.

  First, in this invention, the upper end part and lower end part of a package are sealed by the horizontal direction. Such sealing is performed in a state where the inner surfaces of the films constituting the package are opposed to each other. In addition, the palm portion is provided in the vertical direction so as to be substantially orthogonal to these horizontal seals and is usually located on the back surface of the package.

  As described above, since the inner surfaces of the film constituting the package are sealed, such a film is usually a laminated film mainly composed of plastic, and has one surface (back surface or innermost layer). A film having a heat sealability sealant layer and the other surface (surface or outermost layer) having no heat sealability is preferably used. Therefore, as the simplest configuration, a film formed by laminating a sealant layer on the base film layer can be mentioned, but other than this, depending on various performances required depending on the contents to be filled, etc. Various configurations can be employed. For example, various layers such as a film layer having a moisture-proof function, a film layer having a gas barrier function, a light shielding layer, and a film layer having a puncture-proof function are laminated as an intermediate layer between the base film layer and the sealant layer. Can be configured. Moreover, although the said base film layer, an intermediate | middle layer, and a sealant layer may each be formed by a single layer, they may be formed by laminating a plurality of layers.

  Examples of the base film layer include a uniaxial or biaxially stretched film of polyethylene or polypropylene, a uniaxial or biaxially stretched polyester film such as polyethylene terephthalate or polyethylene naphthalate, nylon 6, nylon 66, MXD6 (polymetaxylylene adipa). A uniaxial or biaxially stretched polyamide film or the like can be suitably used. In particular, a uniaxially stretched film is preferable from the viewpoint of openability. These may be used singly or may be used by combining a plurality.

  Moreover, when making an intermediate | middle layer into a moisture-proof layer, films, such as a high-density polyethylene film and a biaxially-stretched polypropylene film (OPP film), can be used suitably for an intermediate | middle layer. On the other hand, when the intermediate layer is a gas barrier layer, a film such as ethylene vinyl acetate copolymer saponified product (EVOH), polyvinylidene chloride (PVDC), polyacrylonitrile (PAN) can be suitably used for the intermediate layer. . In addition to these films, an aluminum foil, or a vapor deposition layer such as silica, alumina, aluminum, or a coating layer of PVDC can be provided. In this case, the film is directly vapor deposited or applied on the inner surface of the base film layer. It may also be formed on another biaxially stretched nylon film (ON film), biaxially stretched polyethylene terephthalate film (PET film), OPP film, etc., and the film is laminated on the intermediate layer May be. Among these, since the aluminum foil and the aluminum vapor deposition layer are opaque, they can also serve as a light shielding layer. Moreover, when making an intermediate | middle layer into a film layer with a stab-proof function, a nylon film is used suitably as an intermediate | middle layer.

  Furthermore, as the innermost sealant layer, in addition to low density polyethylene (LDPE) and linear low density polyethylene (LLDPE), ethylene α-olefin copolymer, ethylene vinyl acetate copolymer, ethylene acrylic acid copolymer, An ethylene acrylate copolymer, polypropylene, or a copolymer thereof can be used.

  Next, in the present invention, it is necessary to have means for cutting the palm portion at at least one place in the side end region of the palm portion. Here, the “side end portion of the palm portion” refers to a portion of the palm portion that is farthest from the surface of the package body when the palm portion is raised from the surface of the pillow package body. On the other hand, the portion where the package body surface and the palm portion are joined may be referred to as a “base portion of the palm portion”.

  Examples of the cutting means include various notches such as an I notch and a V notch, and a rough surface portion for cutting with fine scratches or fine perforations in the corresponding region. A notch is preferred. Moreover, when using a notch, the number is at least 1, Preferably it is 2-5. Further, different types of notches such as combined use of I notches and V notches can be used in combination. Further, these cutting means are provided in the range of the width of the palm portion, preferably within 80%, more preferably within 50%, from the end of the palm portion toward the base of the palm portion. Thus, by providing the notch with a length shorter than the total width of the joint portion from the joint portion side end side, it is possible to provide a cutting means without impairing the original sealing property of the pillow package, and the cutting means. It is possible to prevent the film constituting the pillow package body from being damaged accidentally and impairing the sealing performance.

  Furthermore, in this invention, it is required that the area | region which has this cutting means is closely_contact | adhered to the surface of the pillow package body. Thus, since the area | region which has a cutting | disconnection means is closely_contact | adhered to the surface of a pillow package body main body, even if it exists in a flexible soft packaging bag, a palm part can be easily cut | disconnected now. In particular, in the present invention, the contents (packaged items) are not like a box but can be easily cut even if they are strips such as corn flakes.

  Here, “in close contact” means that the region is in contact with the surface of the package with almost no gap and is not easily peeled off from the surface of the package when opened. In order to achieve such a “close contact” state, the area and the surface of the package body corresponding to the area are sealed, and the area itself is not sealed from the surface of the package body, but both sides of the area are sealed. It is also possible to use a means for sealing a portion (hereinafter also referred to as a palm-part region A and B) and a surface of the package body corresponding to the portion so that the region is in a “close” state as a result. it can.

  Examples of means for sealing each region of the palm portion and the surface of the pillow package body include a method of bonding with an adhesive tape and a method of using a sealant. Alternatively, a method of attaching a hot sealant such as a heat seal varnish in advance to the surface of the pillow package body (hereinafter sometimes referred to as a seal portion) and then adhering by heat seal, or spraying hot melt on the seal portion for adhesion And a method in which a cold sealant is attached to the seal portion in advance and then adhered by pressing. From the viewpoint of workability, the area and the surface portion of the pillow package body corresponding thereto It is preferable that a hot sealant such as a heat seal varnish is attached to both and heat seal is performed in the bag making process. As the heat seal varnish, ethylene vinyl alcohol (EVA) is suitable.

  Moreover, when sealing both the side parts of a cutting | disconnection means, one of the palm part area | region A and B (gap part area | region A) is a place corresponding to the position of the horizontal seal part of the upper end part of a pillow package. It is preferable that it is located in. Since the seal in the lateral direction of the pillow package is normally sealed after the palm portion is formed, by aligning the positions of the two in this way, a single seal using a heat seal bar can be used. This is because it is possible to simultaneously perform a horizontal seal and a seal with the surface of the pillow package body in the palm region A, and the sealing process can be simplified.

  Further, according to the present invention, the pillow package body includes means for opening the package body at a position substantially parallel to the cutting means in a side end region of the package body on the side where the side end portion of the palm portion is opposed. It is necessary to have. The pillow package body has two left and right side end portions. In the present invention, the pillow package body is bent when the palm portion is bent and brought into close contact with the surface of the package body. Means for opening the packaging body on the opposite side, that is, when the palm portion is folded to the right side, the packaging body is opened on the right end side, and when the palm portion is folded on the left side, the packaging body is opened on the left end side of the packaging body. It has. Moreover, the opening means is provided at a position substantially parallel to the cutting means, that is, when viewed from the top and bottom, the opening means and the cutting means are located at substantially the same height. Yes.

  As such opening means, various notches such as I-notch and V-notch, and a rough surface portion for cutting in which the corresponding area is finely scratched or provided with fine perforations are the same as those described above as the means for cutting the palm portion. Can be used. Further, when the opening means is a single cut, and there are a plurality of, for example, three, cuts in the palm portion, the opening means is cut at 3 of the palm portion. Of the book cuts, it is preferably provided so as to be positioned at the same height as the central cut.

  Moreover, it is preferable that the inner surfaces of the package in the region having the opening means are sealed with each other. This is to maintain the hermeticity of the pillow package. The region is preferably provided at a position close to the lateral seal portion of the upper end portion of the pillow package, and particularly preferably in contact with the region. This is because it is possible to easily provide the seal region at the same time as providing the lateral seal portion.

  Furthermore, in the present invention, it is preferable that a zipper is attached to the inner surface of the pillow package. This is because recloseability can be imparted. Here, as the “zipper”, various known ones can be used, and those described in Patent Documents 4 and 5 and Non-Patent Document 1 are particularly preferably used.

  Such a zipper is usually mounted in the vicinity of the upper end of the package, below the means for cutting the palm portion and the means for opening the pillow package. This is because in order to exhibit the zipper reclose function, it is necessary to open the pillow package in the lateral direction above the zipper.

  Further, the attachment of the zipper is preferably performed by heat sealing from the viewpoint of simplifying the manufacturing process. Therefore, when attaching a zipper, the zipper member which consists of a zipper main body and the flange part which has heat-sealing property as described in patent documents 4 and 5 and nonpatent literature 1 is used preferably.

  Furthermore, it is preferable that the mounting position of the zipper is a position corresponding to the position of the palm portion region B. By aligning the positions of the two in this way, it becomes possible to perform the zipper attachment and the sealing of the joint area B at the same time by one-time sealing using the heat seal bar, thereby simplifying the sealing process. It is because it can plan.

  Next, the manufacturing method of the pillow package of this invention is demonstrated.

  In the pillow package of the present invention, the back surface as described above usually has a heat seal property, and the surface has a surface having no heat seal property. A step of forming a package body part by molding, a step of forming a palm portion by overlapping and sealing the back surfaces of both ends of the film formed into a cylindrical shape, a step of providing means for cutting the palm portion, A step of bending the part so as to contact the surface of the package body part, a process of sealing the lower end part of the package body part, a process of filling the contents (packaged material) if necessary, A step of sealing, and a step of providing a means for opening the pillow packaging body, wherein the region having the cutting means or the joint portion regions A and B is formed in the pillow packaging at an arbitrary stage after the formation of the joint portion. On the surface of the body And the like to le can be prepared by a process comprising the step of intimately areas with the cutting means to the surface of the pillow package main body.

  In such production, it is possible to individually produce pillow packages one by one using a film that has been cut to a predetermined size in advance, or continuously using a long winding film. It can also be bagged.

  In the case of making a bag continuously using a long winding film, an intermittent linear heat seal bar or a continuous rotary heat seal can be used as means for sealing the palm portion. If the blade which cuts a palm part is installed in these heat seal bars, the above-mentioned manufacturing method can be carried out simply. On the other hand, in the rotary heat seal, the above manufacturing method of the present invention can be easily carried out by installing a blade for cutting the palm portion at a fixed position. In particular, it is preferable to use an intermittent linear heat seal bar from the viewpoint of strict positioning.

  In addition, when making a bag continuously using a long winding film, a hot sealant such as a heat seal varnish is applied to a predetermined portion of the winding film before the step of forming the palm portion. It is also preferable to apply it. For this purpose, a winding film coated with a hot sealant is prepared in advance, and a method of using the wound film coated with the hot sealant for the production of a packaging body or when producing a packaging body from a winding film. A method of applying a hot sealant in-line is used, but it is preferable to prepare a take-up film to which a hot sealant is applied in advance. Moreover, when apply | coating a hot sealant to a winding film, it is preferable to apply | coat intermittently by making the length of the pillow package obtained into 1 period. This is because a part of the winding film can be prevented from becoming thick.

  In particular, when the palm portion regions A and B are sealed to the surface of the pillow package body, the palm portion region A is located at a location corresponding to the position of the lateral seal portion of the upper end portion of the pillow package body. If the zipper is attached to a position corresponding to the position of the palm portion area B on the inner surface of the pillow package body, the film surface is opposite to the sealant layer and is attached to the pillow package body. It is preferable that a hot sealant is applied to the palm portion regions A and B and the corresponding surface portion of the package body when the bag is made. In the state of the wound film, in particular, a length including the palm portion regions A to B in one side end region of the film, and 1.5 to 5.0 times the width of the palm portion, preferably 2 It is preferable that the hot sealant is applied intermittently with a width of ˜4 times and the length of the obtained pillow package as one cycle. Thus, the lateral seal portion at the upper end portion of the pillow package body is provided, and at the same time, the palm portion region A and the main body surface of the pillow package body are sealed, and the other surface of the zipper member and the inner surface of the package body are sealed. This is because it is possible to easily seal the palm portion region B and the surface of the package simultaneously with the provision of the portion.

  Therefore, when using the winding film coated with the hot sealant, the palm portion regions A and B are sealed to the surface of the pillow package body, and the palm portion region A is the upper end portion of the pillow package body. When the pillow package body is located at a location corresponding to the position of the horizontal seal portion, the back surface preferably has a heat sealing property on the back surface and the surface has no heat sealing property. It is a film and has a length including the palm portion regions A to B at one side end portion of the surface of the film, and is 1.5 to 5.0 times as wide as the width of the palm portion. A step of continuously supplying a film on which a sealant is intermittently applied with a length of one cycle, a step of forming a package body by forming the film into a cylindrical shape with the surface facing outside, a cylindrical shape The backs of both ends of the film molded into A step of forming a palm portion by sealing, a step of providing means for cutting the palm portion, a step of bending the palm portion so as to be in contact with the surface of the package body, a heat seal bar, The step of sealing the lower end, the step of filling the contents if necessary, the seal of the upper end of the package body using two substantially parallel heat seal bars, the palm portion region located at the upper end of the palm portion It can be manufactured by a method including a step of simultaneously sealing A and the surface of the package, and a step of sealing the joint portion region B and the surface of the package, and a step of providing a means for opening the pillow package.

  In addition, when the zipper is attached to a position corresponding to the position of the palm portion region B on the inner surface of the pillow package, the pillow package preferably has a heat sealability on the back surface. And the surface is a film having a structure having no heat sealability, and is a length including the palm portion regions A to B at one side end of the surface of the film, and the width of the palm portion is 1.5 to 5 A step of continuously supplying a film having a width of 0 times and a pillow packaging body having a length of one cycle and intermittently applying a sealant, and sealing one surface of the zipper member to the back surface of the film Forming a package body by forming the film into a cylindrical shape with the surface facing outside, forming a palm portion by overlaying and sealing the back surfaces of both ends of the film formed into a cylindrical shape Provide means to cut the process and the palm part Process, process of folding the palm part so that it touches the surface of the package body part, process of sealing the lower end part of the package body part using a heat seal bar, process of filling the contents if necessary, two abbreviations Using a parallel heat seal bar, sealing the upper end of the packaging body, sealing the palm portion area A located at the upper end of the palm portion and the surface of the packaging body, sealing the palm portion region B and the surface of the packaging body, And a step of simultaneously sealing the other surface of the zipper member and the package body body, and a step of providing a means for opening the pillow package body.

  For these manufacturing methods, it is preferable to use an apparatus as described in Patent Document 4 or Non-Patent Document 1.

  As mentioned above, according to the said manufacturing method, the pillow package provided with the easy-opening mechanism equipped with the zipper can be manufactured simply.

  Hereinafter, the present invention will be described more specifically with reference to the drawings. However, the present invention is not limited to these drawings.

  First, FIG. 1 is a rear view showing an embodiment of the pillow package of the present invention, and the pillow package 1 is provided with a zipper 20. In addition, the place which attached | subjected the oblique line in FIG. 1 is a place where the films which comprise the pillow package 1 are each heat-sealed (with each flange part of a zipper, and the film which comprises the pillow package 1) The diagonal lines of the seal are omitted).

  The pillow package body 1 has a heat seal surface on the inner surface of the film, and a non-heat seal surface on the outer surface, and the heat seal of the film in which the upper end portion 2 and the lower end portion 3 constitute the pillow package body 1. The surfaces are overlapped and sealed horizontally. Further, the palm portion 4 is formed in a shape that penetrates from the upper end to the lower end in the vertical direction at the substantially central portion of the back surface of the pillow package 1 and is bent to the right. The joint portion 4 is provided by overlapping and sealing the heat seal surfaces at both ends of the film.

  Further, in the side end portion 5 of the palm portion, an upper portion of the position where the zipper 20 is mounted is provided with a notch 6 made up of three I notches as means for cutting the palm portion. The length of the cut, that is, the depth of the notch, is 27% of the width of the palm portion 4.

  Further, among the palm portions, both the upper and lower sides of the notch 6, the positions corresponding to the positions of the lateral seal portions of the upper end 2 correspond to the palm portion area A, while the positions corresponding to the positions where the zipper 20 is attached Corresponds to the palm portion region B. Both of these palm portion regions A and B are sealed to the surface of the pillow package body using heat seal varnish, and as a result, the region of the cut 6 is in close contact with the surface of the pillow package body. Yes.

  In addition, the pillow package is placed on the side corresponding to the cut 6, that is, the side end portion 7 of the right pillow package, and the same height as the center notch among the cuts 6 made of three I notches. As an opening means, one I-notch 8 is provided. The inner surface of the region 9 including the I notch 8 is sealed by overlapping the heat seal surfaces of the film, and the seal portion is continuous with the lateral seal portion of the upper end portion.

  Furthermore, the state of the seal of the easy-opening mechanism part of the present invention, the zipper part, and the like will be described in more detail with reference to FIG. In FIG. 2, each dot pattern is a heat-sealed place.

  First, the joint portion 4 of the pillow package 1 is provided with notches 6 made of three I-notches, and on both sides thereof, the palm portion regions A (upper side, corresponding to the right side in FIG. 2) and B (lower side) are provided. 2 corresponds to the left side in FIG.

  Moreover, in the upper end part (equivalent to the right end side in FIG. 2) of the pillow package 1, the film 10 on the front side and the film 11 on the back side among the films constituting the package body are overlapped to form the heat seal part S1. is doing. Furthermore, it can be seen that a heat seal portion S2 is formed between the palm portion region A and the film 11 on the back side of the pillow package, and S1 and S2 have a corresponding positional relationship.

  On the other hand, a heat seal portion S3 is formed between the palm portion region B and the film 11 on the back side of the pillow package. Also, a heat sheet portion S4 is formed between the zipper member 21 (details will be described below) and the inner surface of the back side film of the pillow package, and S3 and S4 are in a corresponding positional relationship. I understand.

  Next, the zipper member 21 includes a concave zipper 22, a flange portion 23 of the concave zipper 22, a convex zipper 24, and a flange portion 25 of the convex zipper 24, and the concave portion of the concave zipper 22 and the convex portion of the convex zipper 24. The zipper fitting part 26 as shown in FIG. 2 is configured by fitting the parts. Further, the flange portion 23 of the recessed zipper 22 is present only in the upper portion than the recessed zipper 22, or the upper portion of the flange portion is longer than the zipper 22 and is longer than the lower portion of the flange portion. On the other hand, the flange portion 25 of the convex portion zipper 24 has substantially the same length in both the upper and lower portions of the convex portion zipper 24. The difference between the length of the flange portion 23 of the concave zipper 22 and the length of the flange portion 25 of the convex zipper 24 is that the film is formed into a cylindrical shape in the method of continuously manufacturing the pillow package with the zipper attached. This is because it is easy to seal the zipper in advance on the film constituting the package body. Therefore, the flange part 23 of the concave zipper 22 is heat-sealed to the inner surface of the film at one place of the upper part, while the flange part 25 of the convex zipper 24 is two parts of the upper part and the lower part.

  In addition, the flange parts 23 and 25 may be comprised by the sealant layer single layer, and may be comprised by 2 layers of the sealant layer and the resin layer with a high non-heat-fusion property or thermal bonding temperature. Of course, the present invention is not limited to these two layers, and for example, it may be composed of three or more layers such as providing an adhesion improving layer in the intermediate layer. Further, when the flange portions 23 and 25 are formed of a single sealant layer, the heat seal temperature and time are set in order to prevent the facing surfaces of the flange portion 23 of the concave zipper 22 and the flange portion 25 of the convex zipper 24 from facing each other. It must be adjusted accordingly. On the other hand, the flange portions 23 and 25 are constituted by two layers of a sealant layer and a resin layer having a high non-thermal fusing property or a high thermal bonding temperature, and a resin having a high non-thermal fusing property or a high thermal bonding temperature is formed on the fitting portion side. If the layer is present and the sealant layer is present on the inner surface side of the pillow package, the zipper can be sealed to the surface of the pillow package, and the flange 23 of the recessed zipper 22 and the flange of the projected zipper 24 Adhesion between the faces facing the portion 25 can be prevented.

  FIG. 3 shows the back surface view (FIG. 3A) of the easy-opening mechanism portion of the present invention, and the joint portions A and B and the seal portions S2 and S3 between the main body surface of the pillow package 1 and the left side direction. It is the figure (FIG. 3B) folded in FIG. On the back surface, there is a portion 12 to which the heat seal varnish is adhered. From FIG. 3B, the heat seal varnish adhering portion 12 is laterally extended from the side end 5 of the palm portion to the surface of the pillow package body. Until it reaches a part of the palm part, it is continuous over about three times the width of the palm part, while the vertical direction includes the palm part regions A and B from the upper end part of the palm part, and further to the further. I understand that. Further, the seal portions between the palm portion regions A and B and the pillow package body surface can be confirmed as seal portion traces S2 'and S3', respectively.

Unwrapping method, etc. The pillow package 1 grips the top and bottom of the I notch 8 (near the region 9 including the I notch and near the upper right end of the pillow package 1), and either one of the top and bottom is the front of the pillow package. When opening is started by applying a force from the back to the back or from the back to the front, an opening line is formed toward the notch 6. When the unsealing progresses and the unsealing line reaches the notch 6, the area having the notch 6 is in close contact with the surface of the package body by the palm portion areas A and B. A tearing force is added. As a result, the palm portion 4 starts to be cut from the cut 6 portion. If the palm part 4 is cut, the opening line can easily reach the other side end of the package body part 2, and the pillow package 1 is opened.

  The opened pillow package 1 can be partially closed by taking out a part of the contents and fitting the concave zipper 22 and the convex zipper 24 of the zipper 20 together.

It is a rear view which shows one Embodiment of the pillow package of this invention. It is the figure which cut | disconnected the pillow package body 1 of FIG. 1 by the II-II surface. The front surface view (FIG. 3A) of the easy opening mechanism portion of the pillow package 1 and the seal portions S2 and S3 between the palm-part regions A and B and the main body surface of the pillow package 1 are peeled off and folded back to the left. FIG. 3B is a diagram (FIG. 3B).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pillow package 2 Upper end part of pillow package 1 3 Lower end part of pillow package 1 4 Joint part 5 Side edge part of joint part 6 Notch which consists of three I notches 7 Right end part of pillow package body 8 I Notch 9 Region including I notch 10 Front film among films constituting package body 11 Rear film among films constituting package body 12 Heat seal varnish adhering portion 20 Zipper 21 Zipper member 22 Recessed type Zipper 23 Flange part of concave zipper 24 Convex zipper 25 Flange part of convex zipper 26 Zipper fitting part A Joint part area A
B Joint palm area B
S1-S4 heat seal part S2 'and S3' seal part trace

The present invention, solids such as food, suitable for packaging inter alia strip-like material, such as corn flakes, related to pillow packaging with an easy-opening mechanism, especially with an easy-open mechanism and has a Rikurozu function about the pillow package with a zipper.

  Conventionally, in order to prevent deterioration of food when packaging food, etc., a pillow package with high sealing performance that heat-sealed the three sides of the upper end, lower end, and palm (back) is widely used. It has been. Such a pillow package can be provided with functions such as moisture resistance, gas barrier properties, light shielding properties, puncture resistance, and the like by selecting a film constituting the main body. Such a film is usually composed of a base film layer made of a base film, an intermediate layer made of a film having a function, and a sealant layer made of a sealant film. By selecting as appropriate, the pillow package can be made into a flexible packaging bag made of a tough laminated resin film having excellent contents preservability.

  These soft packaging bags made of laminated resin film are extremely tough and are not always easy to open with bare hands. In particular, in a pillow package having a vertical palm portion on the back of the package body, even if an attempt is made to open the pillow package from one side edge to another side edge in a direction perpendicular to the palm portion, Due to the presence of parts, it was not easy to cut completely. In particular, if the contents (packaged items) are box bodies, starting the opening process may easily apply tension to the opening line, which may assist opening, but the contents may be a small piece such as cornflakes. In some cases, such a situation cannot be expected, and the opening is particularly difficult.

  As means for solving such a problem, a package (Patent Document 1) in which a perforated cut line is provided on a base film constituting a palm portion located on a planned cutting line of a pillow package, or a pillow package. A notched package with a notch formed on one of the left and right edges and the backrest (Patent Document 2), or a tangent portion between the package body and the palm portion, that is, a so-called root portion of the palm portion. A package having a surface portion has been proposed (Patent Document 3).

  However, although all of the proposed packages have improved openability, it is still difficult to say that they are sufficiently satisfactory. In the inventions described in Patent Documents 1 and 2, the unsealing ability of these packages is provided to cut the palm portion even if it is attempted to cut from the palm portion side end direction toward the root direction. This is because the perforated cut line or notch is not in close contact with the package body, and the flexible packaging bag is flexible, so that the force to tear the joints is not sufficiently transmitted. It is believed that there is. Further, in the invention described in Patent Document 3, since the direction of breaking the palm portion proceeds from the base of the palm portion toward the end of the palm portion, the force for cutting the palm portion simultaneously seals the palm portion. As a result of acting as a force to be peeled off, it is considered that the cut line is interrupted when the seal portion peels off.

  On the other hand, soft packaging bags equipped with zippers are widely used in the fields of confectionery, foods and the like that particularly require recloseability. In recent years, regarding a soft packaging bag equipped with such a zipper, a continuous manufacturing method of a soft packaging bag with a zipper in the shape of a pillow package having a palm portion on the back has been established (Patent Document 4 and Non-Patent Document 1).

  However, the openability of the pillow package equipped with such a zipper has not been sufficiently satisfactory. If the pillow package does not have a zipper, it can be torn in the same vertical direction as the palm part, but in the case of the pillow package with the zipper, the zipper is mounted in the horizontal direction. This is because, in the upper part of the zipper, it must be opened laterally so as to be parallel to the zipper.

  For this problem, an easy peel to keep the sealing and easy opening even if the perforation for cutting the pillow package in the transverse direction is attached to the upper part of the zipper and the perforation. A bag provided with a weak seal portion has been proposed (Patent Document 5).

However, since this package has hermeticity secured by the weak seal portion, the sealability of the package is significantly lower than that of a normal pillow package, and inherently has the sealing function of the pillow package. It has become something that can not be fully demonstrated.
JP-A-8-91392 (pages 1-2, page 3, right column, lines 37-41, FIG. 1) JP-A-11-263374 (pages 1 and 2, FIG. 1) Japanese Patent Laid-Open No. 2000-103437 (pages 1 and 2, FIG. 1) Japanese Patent Laid-Open No. 10-296884 (pages 1 and 2) JP 2003-246332 A (pages 1 and 2, FIG. 1) Kenichi Masuda, “Vertical Pillow Wrapping Machine Base (VFFS) Inline Zipper Mounting Pouch System Overview”, Packaging Technology, August 2002, p. 14-17

  As described above, in the conventional soft packaging bag in which the opening property of the pillow package is improved, the opening property is not always satisfactory. Furthermore, in the easy-open pillow package equipped with a zipper, a soft packaging bag having sufficient sealability inherent to the pillow package has not been provided so far.

The present invention is to provide a pillow package with an easy opening mechanism that can solve the problems of the prior art.

In order to solve the above-described problems, in the present invention, first, a pillow package body in which an upper end portion and a lower end portion are sealed in a lateral direction and has a palm portion in a vertical direction, the side of the palm portion A means for cutting the palm portion is provided in at least one end region, and the cutting means is provided so that the portion provided with the cutting means is in close contact with the surface of the pillow package body. The palm portion regions A and B (upper and lower regions, which are close to the existing portion, where the upper portion is the palm portion region A and the lower portion is the palm portion region B) sandwich the portion where the cutting means is provided. Close to each other and sealed to the surface of the pillow package body, the palm portion region A is located at a position where it overlaps the position of the lateral seal portion of the upper end portion of the pillow package body, Side end area of pillow package on opposite side Height from the lower end there is has a means for opening the pillow packaging to a position of substantially the same height as the said cutting means, and among the inner surface of the pillow package, and the position of the rafter area B A pillow package having a zipper member mounted at an overlapping position is provided.

According to the present invention, the pillow package body can be cut in the horizontal direction and easily opened without impairing the sealing performance of the normal pillow package body, regardless of the presence of the vertical palm portion. In particular, since the pillow package having a zipper, in particular it can exert its power. Incidentally, pillow packaging having such a zipper, known devices, methods can be continuously manufactured simply by using a.

  First, in this invention, the upper end part and lower end part of a package are sealed by the horizontal direction. Such sealing is performed in a state where the inner surfaces of the films constituting the package are opposed to each other. In addition, the palm portion is provided in the vertical direction so as to be substantially orthogonal to these horizontal seals and is usually located on the back surface of the package.

  As described above, since the inner surfaces of the film constituting the package are sealed, such a film is usually a laminated film mainly composed of plastic, and has one surface (back surface or innermost layer). A film having a heat sealability sealant layer and the other surface (surface or outermost layer) having no heat sealability is preferably used. Therefore, as the simplest configuration, a film formed by laminating a sealant layer on the base film layer can be mentioned, but other than this, depending on various performances required depending on the contents to be filled, etc. Various configurations can be employed. For example, various layers such as a film layer having a moisture-proof function, a film layer having a gas barrier function, a light shielding layer, and a film layer having a puncture-proof function are laminated as an intermediate layer between the base film layer and the sealant layer. Can be configured. Moreover, although the said base film layer, an intermediate | middle layer, and a sealant layer may each be formed by a single layer, they may be formed by laminating a plurality of layers.

  Examples of the base film layer include a uniaxial or biaxially stretched film of polyethylene or polypropylene, a uniaxial or biaxially stretched polyester film such as polyethylene terephthalate or polyethylene naphthalate, nylon 6, nylon 66, MXD6 (polymetaxylylene adipa). A uniaxial or biaxially stretched polyamide film or the like can be suitably used. In particular, a uniaxially stretched film is preferable from the viewpoint of openability. These may be used singly or may be used by combining a plurality.

Moreover, when making an intermediate | middle layer into a moisture-proof layer, films, such as a high-density polyethylene film and a biaxially-stretched polypropylene film (OPP film), can be used suitably for an intermediate | middle layer. On the other hand, when the intermediate layer is a gas barrier layer, a film such as ethylene vinyl acetate copolymer ( EVOH) , polyvinylidene chloride (PVDC), polyacrylonitrile (PAN) can be suitably used for the intermediate layer. In addition to these films, an aluminum foil, or a vapor deposition layer such as silica, alumina, aluminum, or a coating layer of PVDC can be provided. In this case, the film is directly vapor deposited or applied on the inner surface of the base film layer. may form Te, also, another biaxially oriented nylon film (oN film), biaxially oriented polyethylene terephthalate Fi Lum (PET film), formed in advance on the OPP film or the like, laminated the film in the middle layer May be. Among these, since the aluminum foil and the aluminum vapor deposition layer are opaque, they can also serve as a light shielding layer. Moreover, when making an intermediate | middle layer into a film layer with a stab-proof function, a nylon film is used suitably as an intermediate | middle layer.

  Furthermore, as the innermost sealant layer, in addition to low density polyethylene (LDPE) and linear low density polyethylene (LLDPE), ethylene α-olefin copolymer, ethylene vinyl acetate copolymer, ethylene acrylic acid copolymer, An ethylene acrylate copolymer, polypropylene, or a copolymer thereof can be used.

Next, in the present invention, it is necessary that a means for cutting the palm portion is provided in at least one position of the side end portion region of the palm portion. Here, the “side end portion of the palm portion” refers to a portion of the palm portion that is farthest from the surface of the package body when the palm portion is raised from the surface of the pillow package body. On the other hand, the portion where the package body surface and the palm portion are joined may be referred to as a “base portion of the palm portion”.

  Examples of the cutting means include various notches such as an I notch and a V notch, and a rough surface portion for cutting with fine scratches or fine perforations in the corresponding region. A notch is preferred. Moreover, when using a notch, the number is at least 1, Preferably it is 2-5. Further, different types of notches such as combined use of I notches and V notches can be used in combination. Further, these cutting means are provided in the range of the width of the palm portion, preferably within 80%, more preferably within 50%, from the end of the palm portion toward the base of the palm portion. Thus, by providing the notch with a length shorter than the total width of the joint portion from the joint portion side end side, it is possible to provide a cutting means without impairing the original sealing property of the pillow package, and the cutting means. It is possible to prevent the film constituting the pillow package body from being damaged accidentally and impairing the sealing performance.

Furthermore, in the present invention, the to portion the cutting means is provided closely to the surface of the pillow packaging body, rafter part regions A and B are top and bottom region adjacent to the portion of said cutting means is provided (However, the upper part is the palm part area A and the lower part is the palm part area B) and is sealed to the surface of the pillow package body in close proximity to each other across the part provided with the cutting means . is required. Thus, as the portion where the cutting means is provided closely to the surface of the pillow packaging body, rafter part regions A and B are top and bottom region adjacent to the portion of said cutting means is provided with the cutting By sealing the surface of the pillow package body close to each other across the portion where the means is provided, the palm portion can be easily cut even in a flexible soft packaging bag. It becomes like this. In particular, in the present invention, the contents (packaged items) are not like a box but can be easily cut even if they are strips such as corn flakes.

Here, "closely", the area is in contact with substantially no clearance surface of the wrapping material, is intended to mean that the readily from the surface of the wrapping material upon opening is in a state that does not peel. In order to achieve such a “close contact” state, the area and the surface of the package body corresponding to the area are sealed, and the area itself is not sealed from the surface of the package body, but both sides of the area are sealed. It is also possible to use a means for sealing a portion (hereinafter also referred to as a palm-part region A and B) and a surface of the package body corresponding to the portion so that the region is in a “close” state as a result. it can.

Examples of means for sealing the palm portion regions A and B and the surface of the pillow package body include a method of bonding with an adhesive tape and a method of using a sealant. As a method of using a sealant, the region and / Or a method of attaching a hot sealant such as a heat seal varnish in advance to the surface of the pillow package body (hereinafter sometimes referred to as a seal portion), and then adhering by heat seal, spraying hot melt on the seal portion Examples include a method of adhering, a method of adhering by applying a cold sealant to the seal portion in advance and then pressing, and from the viewpoint of workability, the region and the surface of the pillow package body corresponding thereto It is preferable to attach a hot sealant such as heat seal varnish to both parts and heat seal in the bag making process. . As the heat seal varnish, ethylene vinyl alcohol (EVA) is suitable.

Further, the rafter part area A, that is situated in a location that overlaps with the position of the transverse seal portion of the upper portion of the pillow package. Since the seal in the lateral direction of the pillow package is normally sealed after the palm portion is formed, by aligning the positions of the two in this way, a single seal using a heat seal bar can be used. This is because it is possible to simultaneously perform a horizontal seal and a seal with the surface of the pillow package body in the palm region A, and the sealing process can be simplified.

Further, in the present invention, the pillow package is a side end region of the package on the side where the side end of the palm portion is opposed, and the height from the lower end is substantially the same as the cutting means. It is necessary to have means for opening the package. The pillow package body has two left and right side end portions. In the present invention, the pillow package body is bent when the palm portion is bent and brought into close contact with the surface of the package body. Means for opening the packaging body on the opposite side, that is, when the palm portion is folded to the right side, the packaging body is opened on the right end side, and when the palm portion is folded on the left side, the packaging body is opened on the left end side of the packaging body. It has. Moreover, the opening means is provided at a position substantially parallel to the cutting means, that is, when viewed from the top and bottom, the opening means and the cutting means are located at substantially the same height. Yes.

  As such opening means, various notches such as I-notch and V-notch, and a rough surface portion for cutting in which the corresponding area is finely scratched or provided with fine perforations are the same as those described above as the means for cutting the palm portion. Can be used. Further, when the opening means is a single cut, and there are a plurality of, for example, three, cuts in the palm portion, the opening means is cut at 3 of the palm portion. Of the book cuts, it is preferably provided so as to be positioned at the same height as the central cut.

  Moreover, it is preferable that the inner surfaces of the package in the region having the opening means are sealed with each other. This is to maintain the hermeticity of the pillow package. The region is preferably provided at a position close to the lateral seal portion of the upper end portion of the pillow package, and particularly preferably in contact with the region. This is because it is possible to easily provide the seal region at the same time as providing the lateral seal portion.

Further, in the present invention, it is attaching the zipper to the inner surface of the pillow package. This is because recloseability can be imparted. Here, as the “zipper”, various known ones can be used, and those described in Patent Documents 4 and 5 and Non-Patent Document 1 are particularly preferably used.

Such zipper, a vicinity of the upper end of the hull Sokarada, is mounted below the means for opening the means and pillow package cutting the rafter part. This is because in order to exhibit the zipper reclose function, it is necessary to open the pillow package in the lateral direction above the zipper.

  Further, the attachment of the zipper is preferably performed by heat sealing from the viewpoint of simplifying the manufacturing process. Therefore, when attaching a zipper, the zipper member which consists of a zipper main body and the flange part which has heat-sealing property as described in patent documents 4 and 5 and nonpatent literature 1 is used preferably.

Furthermore, the mounting position of the zipper member shall be the position overlapping with the position of the rafter area B. By aligning the positions of the two in this way, it becomes possible to perform the zipper attachment and the sealing of the joint area B at the same time by one-time sealing using the heat seal bar, thereby simplifying the sealing process. It is because it can plan.

  Next, the manufacturing method of the pillow package of this invention is demonstrated.

In the pillow package of the present invention, the back surface as described above usually has a heat seal property, and the surface has a surface having no heat seal property. A step of forming a package body part by molding, a step of forming a palm portion by overlapping and sealing the back surfaces of both ends of the film formed into a cylindrical shape, a step of providing means for cutting the palm portion, A step of bending the part so as to contact the surface of the package body part, a process of sealing the lower end part of the package body part, a process of filling the contents (packaged material) if necessary, A step of sealing, and a step of providing a means for opening the pillow package, wherein the cutting means are provided at any stage after the formation of the joint portion or the joint portion regions A and B. The pillow package body Can be prepared by a process comprising the step of intimately portions is equal to said cutting means for sealing the surface provided on the surface of the pillow package main body.

  In such production, it is possible to individually produce pillow packages one by one using a film that has been cut to a predetermined size in advance, or continuously using a long winding film. It can also be bagged.

  In the case of making a bag continuously using a long winding film, an intermittent linear heat seal bar or a continuous rotary heat seal can be used as means for sealing the palm portion. If the blade which cuts a palm part is installed in these heat seal bars, the above-mentioned manufacturing method can be carried out simply. On the other hand, in the rotary heat seal, the above manufacturing method of the present invention can be easily carried out by installing a blade for cutting the palm portion at a fixed position. In particular, it is preferable to use an intermittent linear heat seal bar from the viewpoint of strict positioning.

  In addition, when making a bag continuously using a long winding film, a hot sealant such as a heat seal varnish is applied to a predetermined portion of the winding film before the step of forming the palm portion. It is also preferable to apply it. For this purpose, a winding film coated with a hot sealant is prepared in advance, and a method of using the wound film coated with the hot sealant for the production of a packaging body or when producing a packaging body from a winding film. A method of applying a hot sealant in-line is used, but it is preferable to prepare a take-up film to which a hot sealant is applied in advance. Moreover, when apply | coating a hot sealant to a winding film, it is preferable to apply | coat intermittently by making the length of the pillow package obtained into 1 period. This is because a part of the winding film can be prevented from becoming thick.

In particular, in the present invention, the palm portion regions A and B are sealed on the surface of the pillow package body, and the palm portion region A overlaps with the position of the lateral seal portion of the upper end portion of the pillow package body. together they are located, among the inner surface of the pillow package, since wearing the zipper member at a position overlapping the position of the rafter area B, and a opposite surface of the film is a sealant layer, manufacturing a pillow package It is preferable that a hot sealant is applied to the palm-part regions A and B and the portion that becomes the surface portion of the package body that overlaps the palm-portion regions A and B when they are packaged. In the state of the wound film, in particular, a length including the palm portion regions A to B in one side end region of the film, and 1.5 to 5.0 times the width of the palm portion, preferably 2 It is preferable that the hot sealant is applied intermittently with a width of ˜4 times and the length of the obtained pillow package as one cycle. Thus, the lateral seal portion at the upper end portion of the pillow package body is provided, and at the same time, the palm portion area A and the main body surface of the pillow package body are sealed , and the other surface of the zipper member and the inner surface of the package body are sealed. This is because it is possible to easily seal the palm portion region B and the surface of the package simultaneously with the provision of the portion.

Therefore, when using the wound film coated with the hot sealant, the pillow package of the present invention is preferably a film having a structure in which the back surface has heat sealability and the surface does not have heat sealability, In addition, the length of the pillow package is one cycle at a length including the palm portion regions A to B at one side end portion of the surface of the film and 1.5 to 5.0 times the width of the palm portion. A step of continuously supplying a film on which a sealing agent is intermittently applied, a step of sealing one surface of a zipper member to the back surface of the film, and forming the film into a cylindrical shape with the surface facing outside The process of forming the packaging body part, the process of forming the palm part by overlapping and sealing the back surfaces of both ends of the film formed into a cylindrical shape, the process of providing means for cutting the palm part, packaging the palm part Touch the surface of the body torso Bending process, using the heat seal bar, sealing the lower end of the package body, filling the contents if necessary, using two substantially parallel heat seal bars, the upper end of the package body part of the seal, the seal between the rafter part region a and the packaging surface is located in the upper end of the rafter part, the seal between the coupling palm region B and the surface of the wrapping material, and the other surface of the zipper members and package barrel Can be manufactured by a method including a step of simultaneously performing the step of sealing and a step of providing a means for opening the pillow package.

  For these manufacturing methods, it is preferable to use an apparatus as described in Patent Document 4 or Non-Patent Document 1.

  As mentioned above, according to the said manufacturing method, the pillow package provided with the easy-opening mechanism equipped with the zipper can be manufactured simply.

  Hereinafter, the present invention will be described more specifically with reference to the drawings. However, the present invention is not limited to these drawings.

First, FIG. 1 is a rear view showing an embodiment of the pillow package of the present invention, and the pillow package 1 is attached with a zipper body 20. In addition, the place which attached | subjected the oblique line in FIG. 1 is a place where the films which comprise the pillow package 1 are each heat-sealed (with each flange part of a zipper, and the film which comprises the pillow package 1) The diagonal lines of the seal are omitted).

  The pillow package body 1 has a heat seal surface on the inner surface of the film, and a non-heat seal surface on the outer surface, and the heat seal of the film in which the upper end portion 2 and the lower end portion 3 constitute the pillow package body 1. The surfaces are overlapped and sealed horizontally. Further, the palm portion 4 is formed in a shape that penetrates from the upper end to the lower end in the vertical direction at the substantially central portion of the back surface of the pillow package 1 and is bent to the right. The joint portion 4 is provided by overlapping and sealing the heat seal surfaces at both ends of the film.

Further, in the side end portion 5 of the palm portion, an upper portion of the position where the zipper body 20 is mounted is provided with a notch 6 made up of three I notches as means for cutting the palm portion. The length of the cut, that is, the depth of the notch, is 27% of the width of the palm portion 4.

Further, in the palm portion, both the upper and lower sides of the notch 6 and the position that overlaps the position of the lateral seal portion of the upper end portion 2 corresponds to the palm portion region A, while the position that overlaps the position where the zipper body 20 is mounted. This corresponds to the palm portion area B. Both of these palm portion regions A and B are sealed to the surface of the pillow package body using heat seal varnish, and as a result, the region of the cut 6 is in close contact with the surface of the pillow package body. Yes.

  In addition, the pillow package is placed on the side corresponding to the cut 6, that is, the side end portion 7 of the right pillow package, and the same height as the center notch among the cuts 6 made of three I notches. As an opening means, one I-notch 8 is provided. The inner surface of the region 9 including the I notch 8 is sealed by overlapping the heat seal surfaces of the film, and the seal portion is continuous with the lateral seal portion of the upper end portion.

  Furthermore, the state of the seal of the easy-opening mechanism part of the present invention, the zipper part, and the like will be described in more detail with reference to FIG. In FIG. 2, each dot pattern is a heat-sealed place.

  First, the joint portion 4 of the pillow package 1 is provided with notches 6 made of three I-notches, and on both sides thereof, the palm portion regions A (upper side, corresponding to the right side in FIG. 2) and B (lower side) are provided. 2 corresponds to the left side in FIG.

Moreover, in the upper end part (equivalent to the right end side in FIG. 2) of the pillow package 1, the film 10 on the front side and the film 11 on the back side among the films constituting the package body are overlapped to form the heat seal part S1. is doing. Furthermore, it can be seen that a heat seal portion S2 is formed between the palm portion region A and the film 11 on the back side of the pillow package, and S1 and S2 are in a positional relationship.

On the other hand, a heat seal portion S3 is formed between the palm portion region B and the film 11 on the back side of the pillow package. Moreover, (the details will be described below) the zipper member 21 and between the inner surface of the back side film of the pillow package is formed a heat seat S4, to be in a positional relationship overlapping the S3 and S4 Recognize.

  Next, the zipper member 21 includes a concave zipper 22, a flange portion 23 of the concave zipper 22, a convex zipper 24, and a flange portion 25 of the convex zipper 24, and the concave portion of the concave zipper 22 and the convex portion of the convex zipper 24. The zipper fitting part 26 as shown in FIG. 2 is configured by fitting the parts. Further, the flange portion 23 of the recessed zipper 22 is present only in the upper portion than the recessed zipper 22, or the upper portion of the flange portion is longer than the zipper 22 and is longer than the lower portion of the flange portion. On the other hand, the flange portion 25 of the convex portion zipper 24 has substantially the same length in both the upper and lower portions of the convex portion zipper 24. The difference between the length of the flange portion 23 of the concave zipper 22 and the length of the flange portion 25 of the convex zipper 24 is that the film is formed into a cylindrical shape in the method of continuously manufacturing the pillow package with the zipper attached. This is because it is easy to seal the zipper in advance on the film constituting the package body. Therefore, the flange part 23 of the concave zipper 22 is heat-sealed to the inner surface of the film at one place of the upper part, while the flange part 25 of the convex zipper 24 is two parts of the upper part and the lower part.

  In addition, the flange parts 23 and 25 may be comprised by the sealant layer single layer, and may be comprised by 2 layers of the sealant layer and the resin layer with a high non-heat-fusion property or thermal bonding temperature. Of course, the present invention is not limited to these two layers, and for example, it may be composed of three or more layers such as providing an adhesion improving layer in the intermediate layer. Further, when the flange portions 23 and 25 are formed of a single sealant layer, the heat seal temperature and time are set in order to prevent the facing surfaces of the flange portion 23 of the concave zipper 22 and the flange portion 25 of the convex zipper 24 from facing each other. It must be adjusted accordingly. On the other hand, the flange portions 23 and 25 are constituted by two layers of a sealant layer and a resin layer having a high non-thermal fusing property or a high thermal bonding temperature, and a resin having a high non-thermal fusing property or a high thermal bonding temperature is formed on the fitting portion side. If the layer is present and the sealant layer is present on the inner surface side of the pillow package, the zipper can be sealed to the surface of the pillow package, and the flange 23 of the recessed zipper 22 and the flange of the projected zipper 24 Adhesion between the faces facing the portion 25 can be prevented.

  FIG. 3 shows the back surface view (FIG. 3A) of the easy-opening mechanism portion of the present invention, and the joint portions A and B and the seal portions S2 and S3 between the main body surface of the pillow package 1 and the left side direction. It is the figure (FIG. 3B) folded in FIG. On the back surface, there is a portion 12 to which the heat seal varnish is adhered. From FIG. 3B, the heat seal varnish adhering portion 12 is laterally extended from the side end 5 of the palm portion to the surface of the pillow package body. Until it reaches a part of the palm part, it is continuous over about three times the width of the palm part, while the vertical direction includes the palm part regions A and B from the upper end part of the palm part, and further to the further. I understand that. Further, the seal portions between the palm portion regions A and B and the pillow package body surface can be confirmed as seal portion traces S2 'and S3', respectively.

Unwrapping method, etc. The pillow package 1 grips the top and bottom of the I notch 8 (near the region 9 including the I notch and near the upper right end of the pillow package 1), and either one of the top and bottom is the front of the pillow package. When opening is started by applying a force from the back to the back or from the back to the front, an opening line is formed toward the notch 6. When the opening progresses and the opening line reaches the notch 6, the portion where the notch 6 is provided is in close contact with the surface of the package body by the palm portion regions A and B. The force to tear from the front is added. As a result, the palm portion 4 starts to be cut from the cut 6 portion. If the palm part 4 is cut, the opening line can easily reach the other side end of the package body part 2, and the pillow package 1 is opened.

The opened pillow package 1 can be partially closed by taking out a part of its contents and fitting the concave zipper 22 and the convex zipper 24 of the zipper body 20 together.

It is a rear view which shows one Embodiment of the pillow package of this invention. It is the figure which cut | disconnected the pillow package body 1 of FIG. 1 by the II-II surface. The front surface view (FIG. 3A) of the easy opening mechanism portion of the pillow package 1 and the seal portions S2 and S3 between the palm-part regions A and B and the main body surface of the pillow package 1 are peeled off and folded back to the left. FIG. 3B is a diagram (FIG. 3B).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pillow package 2 Upper end part of pillow package 1 3 Lower end part of pillow package 1 4 Joint part 5 Side edge part of joint part 6 Notch which consists of three I notches 7 Right end part of pillow package body 8 I Notch 9 Region including I notch 10 Front side film among films constituting package body 11 Rear side film among films constituting package body 12 Heat seal varnish adhering portion 20 Zipper body 21 Zipper member 22 Concave Zipper 23 Concave Zipper Flange 24 Convex Zipper 25 Convex Zipper Flange 26 Zipper Fitting Part A Jointing Area A
B Joint palm area B
S1-S4 heat seal part S2 'and S3' seal part trace

Claims (8)

  A pillow package body having a top end and a bottom end sealed in the lateral direction and having a palm portion in the vertical direction, and having means for cutting the palm portion in at least one side end region of the palm portion And the region having the cutting means is in close contact with the surface of the pillow package body, and is the side end region of the pillow package on the side opposite to the side end of the palm portion, and the cutting means Pillow packaging body having means for opening the pillow packaging body at a position substantially parallel to.   The pillow package according to claim 1, wherein the region having the cutting means is sealed to the surface of the pillow package body.   The pillow package body according to claim 1, wherein the palm portion regions A and B, which are regions on both sides of the region having the cutting means, are sealed to the surface of the pillow package body.   The pillow packaging according to claim 3, wherein one of the palm-part regions A and B (the palm-part region A) is located at a location corresponding to the position of the lateral seal portion of the upper end portion of the pillow package. body.   The pillow package according to claim 3 or 4, wherein a zipper is attached to the inner surface of the pillow package.   The pillow package according to claim 5, wherein a zipper is attached to a position corresponding to the position of the palm portion region B on the inner surface of the pillow package.   The pillow packaging body according to any one of claims 1 to 6, wherein the means for cutting the palm portion includes 2 to 5 I notches and / or V notches, or a rough surface portion for cutting.   The pillow package body according to any one of claims 1 to 7, wherein an inner surface of the package body in a region having means for opening the pillow package body is sealed.

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