JP4370768B2 - Method of forming bag-shaped container with embossed pattern, molding device for bag-shaped container with embossed pattern, and bag-shaped container with embossed pattern - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bag-like container such as a pouch suitable for filling semi-fluid or fluid contents such as foods, beverages and detergents, and in particular, an emboss having an embossed pattern on the side of the bag-like container. The present invention relates to a method for forming a bag-shaped container with a pattern, a molding device for a bag-shaped container with an embossed pattern, and a bag-shaped container with an embossed pattern.
[0002]
[Prior art]
In recent years, bag-like containers such as pouches are known as containers that are filled with foodstuffs, beverages, detergents, adhesives, and the like and arranged on store shelves (for example, Patent Document 1 and Patents). Reference 2).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-29156 (Description and Drawings)
[Patent Document 2]
JP 2000-168792 A (Description and drawings)
[0004]
In addition, among the bag-like containers, there is also known an easy-open pouch having a concavo-convex pattern on a cut-out portion cut out when forming a spout mainly for the purpose of preventing slippage (see Patent Document 3). .
[0005]
[Patent Document 3]
JP 2000-53148 A (Description [0010] of the specification and FIG. 1 of the drawings)
[0006]
Furthermore, in recent years, many manufacturers and distributors who fill and sell contents in bag-like containers have devised the display state of the bag-like container, the shape of the bag-like container, the pattern applied to the side of the bag-like container, etc. The focus is on attracting the attention of consumers over other products.
[0007]
For this reason, the demand for new differentiation is rapidly increasing. As one of them, various attempts have been made to give the bag-like container a texture such as three-dimensional printing, but no satisfactory one has been obtained so far.
Furthermore, since bag-like containers such as pouches have poor rigidity, they have a problem that when they are displayed at a storefront, they hang down and look bad, or when the contents are taken out, the bag-like containers are bent and difficult to take out.
[0008]
In addition, the strength that prevents the bag-like container from being damaged when the bag-like container is dropped, the so-called drop resistance, is small, and dropping the bag-like container breaks the bag-like container and causes the contents to scatter or leak out. There is a problem of doing. Although such problems can be solved to some extent by increasing the thickness of the bag-like container and increasing its rigidity, this increases the amount of material used and increases the molding cost, and the price of the bag-like container The new problem of raising
Furthermore, since the surface of a bag-like container such as a pouch is generally smooth, there is a problem that the bag-like container is slippery when the contents are taken out.
[0009]
Furthermore, when filling the contents, the inner surface of the bag-like container is in close contact and difficult to open, or in a self-supporting bag-like container, it is difficult to unfold the bottom of the folded container, It may be impossible or difficult. Therefore, under the present circumstances, powder such as nicked powder is applied to the inner surface of the bag-shaped container to prevent the inner surface of the bag-shaped container and the folded bottom from contacting each other, and the bag-shaped container opens when filling the contents. It is easy.
[0010]
[Problems to be solved by the invention]
The present invention has been made in view of the above-described problems, and provides a bag-shaped container molding method, a bag-shaped container molding apparatus, and a bag-shaped container that can solve the above problems all at once. is there.
[0011]
[Means for Solving the Problems]
  To achieve the above objective,Method for forming bag-shaped container with embossed pattern according to the present inventionIs a method of forming a bag-shaped container with an embossed pattern, which is formed from a soft packaging material and forms an embossed pattern on a bag-shaped container that is filled and sealed with contents,An upper member having a convex portion formed according to the embossed pattern to be formed is heated so that at least the convex portion is heated to a predetermined temperature, and then the convex portion is brought into contact with the surface of the soft packaging material. By partially shrinking the soft wrapping material and raising it to the outsideMethod for forming first embossed pattern of predetermined shapeAsis there.
  In the molding method of the present invention, a bag-like container is formed by utilizing a so-called shrinkage phenomenon that occurs when a soft packaging material is heated and cooled.Predetermined part ofUneven embossed pattern onPre-set shapeCan be formed.
[0012]
  In the method for forming a bag-like container with an embossed pattern according to the present invention, the soft packaging material is preferably formed by laminating a plurality of resin films having different melting points, and in particular, the soft packaging material is a nylon film. It is preferable that the convex portion is brought into contact with the nylon film formed by laminating a polyethylene film and positioned on the outside. Further, in the latter case, it is preferable that the upper member is heated so that the temperature of the convex portion is substantially the same as or slightly lower than the melting point of polyethylene.
[0013]
  Further, in the method for forming a bag-like container with an embossed pattern according to the present invention, the first embossed pattern is formed by bringing the convex part into contact with the surface of the soft wrapping material, and at the same time, around the convex part. The second embossed pattern having an indefinite shape may be formed by partially raising at least a part of the periphery of the first embossed pattern by heat from the heating portion of the upper member provided on the surface.
  With this method, it is possible to form an embossed pattern having a fixed shape according to the shape of the convex portion formed on the upper member, and to form a second embossed pattern having an indefinite shape around the embossed pattern.
[0014]
  Moreover, the shaping | molding method of the bag-like container with an embossed pattern which concerns on this invention may be made to place the said soft packaging material on a lower member, and to make the said convex part contact the surface of the said soft packaging material. .
[0015]
  Further, the method for forming a bag-like container with an embossed pattern according to the present invention is to send out the long sheet-shaped soft packaging material wound in a roll shape by a predetermined length between the upper member and the lower member. However, you may make it make the said convex part contact the surface of the said soft packaging material continuously.
[0016]
  Moreover, the molding method of the embossed bag-like container according to the present invention is as follows.On one side and the other side of the bag-like containerEmbossed patternIn the case of forming,Multiple heated to a given temperatureAboveThe upper member is disposed so as to face one side surface and the other side surface of the bag-shaped container, and inside the bag-shaped container.Lower memberFrom one side and the other side of the bag-like containerThe convex portion may be brought into contact with the surface of the soft packaging material..
  In this way, when a part of the bag-shaped container is heated / cooled, the first embossed pattern having a convex portion protruding in the opposite direction and the second embossed pattern having an indefinite shape are formed on the bag-shaped container. It is formed on one side and the other side. Convex parts protruding in opposite directions form a gap on the inner surface of the bag-like container, so that the inner surface of the bag-like container and the bottom of the folded-up state are prevented from sticking, and when filling the contents, the bag-like container Make it easier to open.
[0017]
  Further, in the method for forming a bag-like container with an embossed pattern according to the present invention, the first embossed pattern and / or the second embossed pattern includes a long linear component, and at least the long linear component is included. It can also form so that a part may follow the seal | sticker part of the periphery of the said bag-shaped container.
  In this way, a bag-like container having high rigidity and excellent drop resistance can be formed.
[0018]
  Also,The present inventionOf the embossed bag-like containerThe molding device is formed on at least one side surface of a bag-like container that is molded from a soft wrapping material and filled and sealed.Embossed patternA molding apparatus for formingTry to formFormed according to the shape of the embossed patternWith protrusionsAn upper member;The upper memberHeating means for heating theThen, the convex portion heated to a predetermined temperature is brought into contact with the surface of the soft wrapping material, and the soft wrapping material is partially shrunk to form a first embossed pattern with a predetermined shape.It is as composition to do.
  According to this configuration, the first embossed pattern having a fixed shape can be formed by bringing the convex portion heated by the heating means into contact with the soft packaging material..
[0019]
  Moreover, the shaping | molding apparatus of the bag-shaped container with an embossed pattern which concerns on this invention is a support member which the said upper member supports the linear member formed according to the shape of said 1st embossed pattern, and the said linear member Can be provided.
  By doing in this way, the 1st embossing pattern of the same shape as the said linear member can be formed in a bag-shaped container.
  In this case, the heating means can be incorporated in the linear member.
[0020]
  Further, in the molding device for a bag-like container with an embossed pattern according to the present invention, the upper member has a heating portion provided on the surface around the convex portion, and the first member is heated by the heat from the heating portion. At least a part of the periphery of the embossed pattern may be partially raised to form an irregularly shaped second embossed pattern.
  By doing in this way, the irregular-shaped 2nd embossed pattern can be formed in the circumference | surroundings of a 1st embossed pattern.
[0021]
  Moreover, the shaping | molding apparatus of the bag-shaped container with an embossed pattern which concerns on this invention WHEREIN: The lower member in which the said upper member and / or the said soft packaging material are mounted is provided in the rotary body, and it rotates continuously or intermittently. You may make it the said convex part contact the surface of the said soft packaging material.
  Such a molding apparatus is suitable for mass production because it can continuously form an embossed pattern on a soft wrapping material.
[0022]
  Moreover, the bag-like container with an embossed pattern according to the present invention isA bag-shaped container that is molded from a soft wrapping material and sealed by filling the contents, on at least one side surface of the bag-shaped container,An upper member having a convex portion formed according to the embossed pattern to be formed is heated so that at least the convex portion is heated to a predetermined temperature, and then the convex portion is brought into contact with the surface of the soft packaging material. By partially shrinking the soft wrapping material and raising it to the outsideA first embossed pattern having a predetermined shape is formed.
  The first embossed pattern consisting of irregularities on the surface of the bag-like container has a texture, and can give consumers a different impression from other printed patterns. Therefore, differentiation from other bag-shaped containers can be achieved by applying such a first embossed pattern to the bag-shaped containers.
[0023]
  Also,A bag-like container with an embossed pattern according to the present invention isThe first embossed pattern includes a long linear component, and the long linear first embossed pattern is formed along the periphery of the bag-like container. Also good.
  The first embossed pattern made of irregularities also functions as a rib, and the rigidity of the bag-like container can be increased by forming such a first embossed pattern along the peripheral seal portion. Therefore, it is possible to obtain a bag-like container that does not easily hang down during display and is not easily bent when the contents are taken out. In addition, an impact such as a drop impact acts on the bag-like container, and at the same time, the internal pressure of the bag-like container rises and the rib spreads in a direction perpendicular to the longitudinal direction. As a result, the internal pressure of the bag-like container is lowered, the force acting on the seal portion applied to the periphery of the bag-like container is reduced, and the drop resistance of the bag-like container can be improved.
  Furthermore, since sufficient rigidity can be obtained even if it is thinner than the conventional bag-like container, the amount of the soft packaging material can be reduced, and the price of the bag-like container can be reduced accordingly.
[0024]
  further,A bag-like container with an embossed pattern according to the present invention isA second embossed pattern having an indefinite shape may be formed on at least a part of the periphery of the portion where the first embossed pattern is formed.
  Such a second embossed pattern, when combined with the first embossed pattern described above, gives the bag-shaped container a further texture, and can be further differentiated from other bag-shaped containers.
  in this case,It is preferable that at least a part of the second embossed pattern is formed along a seal portion at the periphery of the bag-like container.
  By doing in this way, the rigidity of a bag-like container can be improved.
[0025]
  Also,A bag-like container with an embossed pattern according to the present invention isThe first embossed pattern and / or the second embossed pattern are formed at the same position on one side surface and the other side surface of the bag-like container, and the first embossed pattern and / or the second embossed pattern are formed. The convex portions constituting the embossed pattern may protrude in different directions.
  Since the convex portions protruding in different directions of the first embossed pattern or the second embossed pattern formed at the same position form a gap on the inner surface of the bag-like container, the inner surface of the bag-like container or the folded The bottom of the state is less likely to stick, making it easier to open the bag-like container when filling the contents.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of a method for forming a container according to the present invention will be described with reference to the drawings.
[First embodiment]
1A and 1B show an embodiment of the present invention, in which FIG. 1A is a perspective view of a bag-like container with an embossed pattern, and FIG. 1B is an enlarged cross-sectional view in the II direction of the embossed pattern of FIG.
As shown to Fig.1 (a), the bag-like container 10 with an embossed pattern is formed by giving the uneven | corrugated embossed pattern 20 to the side surface of the bag-like container 11 formed with the soft packaging material.
As the resin used for the soft packaging material, a thermoplastic resin such as polyethylene, polypropylene, polystyrene, polyamide (nylon), polyester such as PET, polylactic acid, ethylene vinyl alcohol copolymer, or the like can be used. Moreover, it uses as these single | mono layer or multilayer according to the use of a container. In the case of a multilayer structure, an adhesive layer may be provided between the layers.
[0027]
The bag-shaped container 11 is provided with a side seal 13, a bottom seal 14, and a top seal 15 on the periphery. And the spout 16 is formed by cutting off a part of the top seal 15 as shown by a dotted line in the figure. Moreover, the bottom 12 of the bag-like container 11 is in a state of being folded in two at a fold line 12a so that the embossed bag-like container 10 can swell and become self-supporting when filled with the contents. .
[0028]
One or more embossed patterns 20 that are the first embossed pattern are formed at predetermined locations on the side surface of the bag-like container 11. The embossed pattern 20 may be any of characters, figures, symbols, and may be a combination of these.
Moreover, you may form in one of the side surfaces of the bag-shaped container 11, and may form in both surfaces of one side surface and another side surface. When the embossed pattern 20 is formed on both side surfaces of the bag-like container 11, the embossed pattern 20 may be different between one side surface and the other side surface.
[0029]
In addition, it is good to form a part of embossed pattern 20 (part shown by the code | symbol 20a in the figure) in the shape of a long line along the side seal 13. FIG. By providing such a long linear portion 20a, the embossed pattern 20 functions as a rib, and the rigidity of the bag-like container 10 with the embossed pattern can be increased. For this reason, it is difficult for the head to hang down when displayed at the store, and it is not easily bent when the contents are taken out. In addition, an impact such as a drop impact acts on the embossed pattern-like container 10, and at the same time, the internal pressure of the embossed pattern-like container 10 increases, and the embossed pattern 20 functioning as a rib spreads in a direction perpendicular to the longitudinal direction. .
[0030]
As a result, the internal pressure of the bag-like container 10 with the embossed pattern is reduced, and the force acting on the side seal 13, the top seal 15, and the bottom seal 14 applied to the periphery of the bag-like container 10 with the embossed pattern is reduced. The drop resistance, which is the strength when the attached bag-like container 10 is dropped, can be improved. Furthermore, since sufficient rigidity can be obtained even if it is thinner than the conventional bag-like container, the amount of the soft packaging material can be reduced, and the price of the bag-like container can be reduced accordingly.
[0031]
A bag-like container 11a shown in FIG. 1 (b) is formed of a soft wrapping material formed by laminating a plurality (two in this embodiment) of resin films. In this embodiment, nylon 11a having a melting point of about 235 ° C. and a wall thickness of about 0.05 mm and polyethylene 11b having a melting point of about 120 ° C. are bonded together with an adhesive to form a soft wrapping material. Further, the bag-like container 11 formed of this soft wrapping material is formed so that nylon 11a is located on the outside and polyethylene 11b is located on the inside. The cross section of the embossed pattern 20 has a concavo-convex shape including a convex portion 21 and a concave portion 22.
[0032]
And the convex part 21 has lifted the embossed pattern 20 of the predetermined shape from the surface of the side surface of the bag-like container 11. Such an embossed pattern 20 has an advantage that a texture can be given to the pattern on the side surface of the bag-like container 11, unlike a planar pattern formed by printing or the like.
Furthermore, there is an advantage that the convex portion 21 becomes a slip stopper when the embossed pattern-like bag-like container 10 is gripped, and the contents are easily taken out.
[0033]
By applying the soft packaging material obtained by laminating these two resin films (nylon 11a and polyethylene 11b) to the molding method of the present invention, the resin film is locally raised and embossed. In addition, the resin film surface before shaping | molding is a surface which tied the deepest part of the recessed part.
[0034]
Next, the shaping | molding method of the bag-shaped container 10 with an embossed pattern of the said structure is demonstrated.
FIG. 2 is a diagram illustrating a procedure for forming the embossed pattern 20.
First, an upper member 25 having a convex portion 25a shaped according to the embossed pattern 20 to be formed, and a lower member formed of silicon rubber or the like on which a single layer or laminated film as a material of the bag-like container 10 is placed. 26 are prepared. The surface of the lower member 26 may be flat, or a convex portion similar to the convex portion 25a of the upper member 25 may be formed. In this embodiment, the surface of the lower member 26 is assumed to be flat.
[0035]
As shown in FIG. 2A, a soft packaging material for forming the bag-like container 11 is placed on the lower member 26. This soft wrapping material is formed by laminating polyethylene 11b located inside the bag-like container 11 and nylon 11a located outside.
In this state, the upper member 25 is positioned above the soft packaging material.
The upper member 25 is configured such that at least a portion of the convex portion 25a is heated to a predetermined temperature by a heating means (not shown). The heating temperature may be substantially the same as or slightly lower than the melting point of polyethylene 11b. Specifically, it may be heated to about 110 ° C.
[0036]
Next, as shown in FIG. 2B, the upper member 25 is moved toward the lower member 26 to bring the convex portion 25a into contact with the surface of the soft packaging material. Thereby, the part which the convex part 25a contacted is heated and cooled, nylon 11a and polyethylene 11b rise to the outer side of the bag-shaped container 11, and the embossed pattern 20 which consists of the convex part 21 and the recessed part 22 is formed.
[0037]
As described above, in the present embodiment, since the shrinkage that occurs when the soft packaging material is heated / cooled is used, the portion that is to form the embossed pattern 20 is only heated / cooled. The embossed pattern 20 can be formed by the extremely simple molding apparatus as described above, and there is an advantage that the equipment cost can be reduced.
Further, the shape of the embossed pattern 20 can be adjusted by the configuration, material and structure of the soft packaging material, tension applied to the soft packaging material, heating temperature, and time, in addition to the height of the convex portion 25a of the upper member 25.
[0038]
The upper member 25 and the lower member 26 may have a flat plate shape as shown in FIG. 2, but may use a continuously rotating roller shape. Moreover, it is good to form an embossed pattern continuously, sending the required length laminated film between the upper member 25 and the lower member 26 from the elongate laminated film wound by roll shape.
By doing in this way, an embossed pattern can be continuously formed in a bag-like container and it is suitable for mass production.
[0039]
[Second Embodiment]
In the method of the first embodiment shown in FIG. 2, after forming the embossed pattern 20 on the soft wrapping material, the soft wrapping material is bonded to form the bag-like container 10 with the embossed pattern. In a second embodiment to be described next, after forming a bag-like container 11 by laminating a soft wrapping material, an embossed pattern 20 is formed on both sides of the bag-like container 11 to form a bag-like container with an embossed pattern. The case where 10 is shape | molded is demonstrated.
[0040]
In order to form the embossed pattern 20 on both side surfaces of the bag-like container 11, two upper members 251 and 252 are arranged facing the both side surfaces of the bag-like container 11 as shown in FIG. Convex portions 251a and 252a are formed on the upper members 251 and 252 in a shape corresponding to the shape of the embossed pattern 20 to be formed on one side surface and the other side surface of the bag-like container 11, respectively. . In this embodiment, the embossed pattern 20 formed on both side surfaces of the bag-like container 11 by the two upper members 251 and 252 will be described as being the same, but it is needless to say that different patterns may be used. .
[0041]
Further, a plate-like lower member 261 such as silicon rubber having excellent heat insulation and heat resistance is inserted into the bag-like container 11. The reason why the lower member 261 is inserted into the bag-like container 11 is to prevent the polyethylene 11b, 11b forming the inner surface of the bag-like container 11 from being welded by heat when the embossed pattern 20 is formed. is there.
Next, the convex portions 251 a and 252 a of the two upper members 251 and 252 are heated to a predetermined temperature (the temperature of about 110 ° C.), the upper members 251 and 252 are brought close to each other, and the bag-like container 11 is moved to the upper member 251. , 252.
[0042]
By doing in this way, as shown in FIG.3 (b), the embossed pattern 20 is formed in the both sides | surfaces of the bag-shaped container 11. FIG. At this time, since the space 23 is formed in the inside of the bag-shaped container 10 with the embossed pattern in the portion where the convex portions 21, 21 on the one side surface and the other side surface are formed, the inner surface of the bag-shaped container 10 with the embossed pattern is formed. The close contact of the bottom portion 12 in the close contact state or the folded state is prevented, and the embossed bag-like container 10 is easily opened when filling the contents.
[0043]
4 is a cross-sectional view in the II-II direction in FIG. 1A of the bag-like container 10 with an embossed pattern in which the embossed pattern 20 is formed on both side surfaces by the method of FIG.
According to the method shown in FIG. 2, it is possible to form the embossed pattern 20 protruding outward on the bottom portion 12 in a state of being folded at the folding line 12a. Thus, in the present invention, the manufacturer's name, company emblem, etc. of the bag-like container 11 can be described in an embossed pattern in an inconspicuous portion of the bag-like container 11.
[0044]
[Third embodiment]
FIG. 5: is a perspective view which shows the bag-like container with an embossed pattern concerning 3rd embodiment of this invention, its shaping | molding method, and a shaping | molding apparatus.
In this embodiment, the two upper members 451 and 452 formed by heating and cooling the embossed pattern 40 on both side surfaces of the bag-like container 31 are the upper member 25 of the first embodiment and the second embodiment. This is simpler than the upper members 251 and 252. That is, the upper members 451 and 452 of the third embodiment include linear members 451a and 452a formed in the same shape as the embossed pattern 40, and support members 451b and 452a that support the linear members 451a and 452a. 452b.
[0045]
The linear members 451a and 452a incorporate heating means such as nichrome wire, and the heating means heats the linear members 451a and 452a to a temperature near the melting point of the polyethylene 11b. . Of course, the linear members 451a and 452a may be heated by separate heating means.
The lower member 46 inserted into the bag-like container 31 is a flat plate formed of silicon rubber or the like, as in the previous embodiment.
[0046]
In order to form the embossed pattern 40 using the molding apparatus including the upper members 451 and 452 and the lower member 46, first, the upper members 451 and 452 in which the linear members 451a and 452a are heated to a predetermined temperature, The upper members 451 and 452 are moved toward the bag-shaped container 31 so as to face both side surfaces of the bag-shaped container 31. A lower member 46 is inserted in the bag-like container 31 in advance. Then, the linear members 451 a and 452 a are brought into contact with both side surfaces of the bag-like container 31. Thereby, the embossed pattern 40 having the same shape as that of the linear members 451 and 452 is formed on both side surfaces of the bag-like container 31.
By using the same upper members 451 and 452, the embossed pattern 40 having the same shape can be formed at the same position on both side surfaces of the bag-like container 31.
[0047]
[Fourth embodiment]
FIG. 6 is a perspective view showing a bag-like container with an embossed pattern and an embossing pattern forming apparatus according to the fourth embodiment of the present invention, and FIG. 7 is a process of forming an embossed pattern using the forming apparatus of FIG. FIG. 8 is a cross-sectional view in the III direction of FIG. 6 showing the second embossed pattern.
[0048]
The two upper members 455 and 456 used in this embodiment include convex portions 455a and 456a projecting on the main body surface of the upper members 455 and 456 to form the first embossed pattern 40 having a fixed shape, and indefinite In order to form a second embossed pattern 60 having a shape, heating portions 455b and 456b formed on the main body surface are provided. The height h of the convex portions 455a and 456a from the main body surface is the height of the convex portion 25a (see FIG. 2) of the first embodiment and the convex portions 251a and 252a (see FIG. 3) of the second embodiment. The bag-like container 31 is heated by the heat of the heating portions 455b and 456b on the main body surface.
[0049]
The specific dimensions of the height h are the configuration of the soft packaging material forming the bag-like container 31 (single layer configuration consisting of a single resin film or laminated configuration consisting of a plurality of resin films), material, structure, heating temperature, etc. However, the side surface of the bag-like container 31 is raised by heating the heating parts 455b and 456b to a predetermined temperature, and a part of the side can contact the heating parts 455b and 456b. For example, in the bag-like container 31 made of nylon (outside) and polyethylene (inside), the heating temperature of the heating parts 455b and 456b is preferably 110 ° C. and about 1.5 mm to 3 mm.
[0050]
The entire upper members 455 and 456 are heated so that the convex portions 455a and 456a and the heating portions 455b and 456b are at a predetermined temperature, and the lower member 46 is inserted into the bag-like container 31. By bringing the upper members 455 and 456 into contact with the surface, the fixed-shaped embossed pattern 40 (first embossed pattern) and the surrounding irregularly-shaped second embossed pattern 60 are simultaneously formed.
The process of forming the second embossed pattern 60 in this embodiment will be described in some detail with reference to FIG.
[0051]
First, as shown in FIG. 7A, two upper members 455 and 456 are disposed so as to face both side surfaces of the bag-like container 31.
7B, when the upper members 455 and 456 are moved toward the bag-like container 31 and are brought into contact with the bag-like container 31, the bag-like container 31 is moved by the heat of the heating units 455b and 456b. The formed resin film 31a (for example, nylon) and the resin film 31b (for example, polyethylene) are partially raised. A part of this rise comes into contact with the heating parts 455b and 456b of the upper members 455 and 456.
[0052]
For this reason, when the upper members 455 and 456 are moved away from the bag-like container 31, as shown in FIG. 7C, the heated portion in contact with the heating portions 455b and 456b is cooled and contracted to form an embossed pattern. Is done. Since the above-described bulge occurs randomly at a portion other than the portion where the convex portions 455a and 456a of the upper members 455 and 456 are in contact with each other, the second embossed pattern 60 formed by this bulge becomes irregular. .
Further, the shape of the second embossed pattern 60 is, for example, intentionally causing a temperature distribution (temperature unevenness) in the heating parts 455b and 456b, forming irregularities in the heating parts 455b and 456b, or soft wrapping. Various changes can be made by adjusting the tension on the material.
[0053]
Moreover, in the bag-shaped container 50 with an embossed pattern of this embodiment, the long line-shaped thing along the side seal 33 among the 2nd embossed patterns 60 improves the rigidity of the bag-shaped container 50 with an embossed pattern. Functions as a rib.
Further, as shown in FIG. 8, a large number of convex portions 61 of the second embossed pattern 60 formed on both side surfaces of the embossed pattern-like bag-shaped container 50 have a large number of spaces inside the embossed-patterned bag-shaped container 50. 63 is formed, it is possible to more effectively prevent the inner surface of the bag-like container 50 with an embossed pattern from being closely adhered, and the bag-like container 50 with an embossed pattern can be opened more easily when filling the contents. .
[0054]
In addition, the large number of second embossed patterns 60 further improve the rigidity of the embossed pattern-like bag-like container 50, and for the same reason as described above, the drop is the strength when the embossed-patterned bag-like container 50 is dropped. It has the advantage of improving resistance. Furthermore, the second embossed pattern 60 is highly effective as an anti-slip material, and further enhances the texture of the pattern of the bag-like container 50 with the embossed pattern, and has an excellent design.
[0055]
Although preferred embodiments of the present invention have been described, the present invention is not limited to the above-described embodiments.
For example, in the above description, the embossed pattern is formed by projecting the convex portion outside the bag-shaped container, but the embossed pattern may be formed by projecting the convex portion inside. Moreover, it is good also as what forms the embossed pattern which protruded the convex part on the outer side, and the embossed pattern which protruded the convex part on the inner side in a bag-shaped container.
[0056]
【The invention's effect】
As described above in detail, according to the present invention, it is possible to form a textured pattern on the bag-like container and differentiate it from other bag-like containers.
In addition, the rigidity of the bag-like container such as a pouch is improved, the neck drop when displayed at the storefront is prevented, the folding of the bag-like container when the contents are taken out is prevented, and the contents are easily taken out. Furthermore, it is possible to improve the drop resistance of the bag-shaped container so that the bag-shaped container is not easily damaged even if the bag-shaped container is dropped.
[0057]
Furthermore, since sufficient rigidity can be obtained even if it is thinner than the conventional bag-like container, the amount of the soft packaging material can be reduced, and the price of the bag-like container can be reduced accordingly.
In addition, the surface of the bag-like container such as a pouch is made difficult to slip so that the bag-like container can be easily grasped and the contents can be easily taken out.
Further, the inner surface of the bag-like container and the bottom of the self-supporting bag-like container are prevented from being easily opened, and the bag-like container can be easily opened and the contents can be easily filled.
[Brief description of the drawings]
1A is a perspective view of a bag-like container with an embossed pattern, and FIG. 1B is an enlarged sectional view in the II direction of the embossed pattern of FIG.
FIG. 2 is a diagram illustrating a procedure for forming an embossed pattern according to the first embodiment of the present invention.
FIG. 3 is a diagram illustrating a procedure for forming an embossed pattern according to the second embodiment of the present invention.
FIG. 4 is a cross-sectional view in the II-II direction in FIG. 1 (a) of an embossed bag-shaped container in which an embossed pattern is formed on both sides by the method of the first embodiment.
FIG. 5 is a perspective view showing a bag-like container with an embossed pattern, a molding method thereof, and a molding apparatus according to a third embodiment of the present invention.
FIG. 6 is a perspective view showing a bag-like container with an embossed pattern, a molding method thereof, and a molding apparatus according to a fourth embodiment of the present invention.
FIG. 7 is an explanatory diagram of a procedure for forming a second embossed pattern.
8 is an enlarged sectional view in the III direction of the second embossed pattern of FIG. 6;
[Explanation of symbols]
10 Bag-shaped container with embossed pattern
11 Bag-shaped container
11a Nylon (resin film)
11b Polyethylene (resin film)
12 Bottom
12a Fold line
13 Side seal
14 Bottom seal
15 Top seal
20 Embossed pattern
21 Convex
22 recess
23 space
30 Bag-shaped container with embossed pattern
31 Bag-shaped container
40 Embossed pattern
45 Upper member
46 Lower member
50 Bag-shaped container with embossed pattern
60 Second embossed pattern
61 Convex
63 space

Claims (19)

A method for forming a bag-like container with an embossed pattern, which is formed from a soft packaging material and forms an embossed pattern in a bag-like container that is filled and sealed with contents,
An upper member having a convex portion formed according to the embossed pattern to be formed is heated so that at least the convex portion is heated to a predetermined temperature, and then the convex portion is brought into contact with the surface of the soft packaging material. A method for forming a bag-like container with an embossed pattern, wherein the first embossed pattern having a predetermined shape is formed by partially shrinking the soft wrapping material and raising it to the outside . The method for producing a bag-like container with an embossed pattern according to claim 1, wherein the soft packaging material is formed by bonding a plurality of resin films having different melting points . The soft packaging material is formed by bonding a nylon film and a polyethylene film,
Method of molding embossed patterned bag-shaped container according to claim 1 or 2 wherein the formed contacting the convex portion to a nylon film and said Rukoto so as to be positioned outside. The method for forming a bag-like container with an embossed pattern according to claim 3, wherein the upper member is heated so that the temperature of the convex portion is substantially the same as or slightly lower than the melting point of polyethylene. Simultaneously with the formation of the first embossed pattern by contacting the convex portion on the surface of the soft packing material,
At least a part of the periphery of the first embossed pattern is partially raised by the heat from the heating part of the upper member provided on the surface around the convex part, and the second embossed pattern having an indefinite shape is formed. It forms, The shaping | molding method of the bag-shaped container with an embossing pattern as described in any one of Claims 1-4 characterized by the above-mentioned. By placing the soft packing material on top of the lower member, with embossed pattern according to any one of claims 1 to 5, wherein Rukoto contacting the convex portion on the surface of the soft wrapping material A method for forming a bag-like container. The convex portion is continuously in contact with the surface of the soft wrapping material while feeding the long sheet-shaped soft wrapping material wound in a roll shape by a predetermined length between the upper member and the lower member. method of molding embossed patterned bag-shaped container according to claim 6, characterized in Rukoto is. In the case of forming an embossed pattern on one side and the other side of the bag-like container ,
A plurality of said upper member heated to a predetermined temperature while arranged by facing the one side and the other side surface of the bag-like container, and insert the lower member to the inside of the bag-like container,
From one side and the other side surface of the bag-like container, embossed patterned bag-shaped container according to any one of claims 1 to 5, wherein Rukoto contacting the convex portion on the surface of the soft wrapping material Molding method. The first embossed pattern and / or the second embossed pattern includes a long line-shaped component, and at least a part of the long line-shaped component is formed so as to be along the peripheral sealing portion of the bag-shaped container. The molding method of the bag-shaped container with an embossed pattern as described in any one of Claims 5-8 characterized by the above-mentioned. A molding apparatus that forms an embossed pattern on at least one side surface of a bag-like container that is molded from a soft wrapping material and filled and sealed,
An upper member having a convex portion formed according to the shape of the embossed pattern to be formed;
Have a heating means for heating the upper member to a predetermined temperature,
Forming a first embossed pattern of a predetermined shape by bringing the convex portion heated to a predetermined temperature into contact with the surface of the soft wrapping material and partially shrinking the soft wrapping material to bulge outward An apparatus for forming a bag-like container with an embossed pattern. It said upper member is a linear member and the forming device of embossed pattern with bag-like container according to claim 10, characterized in Rukoto and a support member supporting the wire-like member. The apparatus for forming a bag-like container with an embossed pattern according to claim 11, wherein the heating means is incorporated in the linear member. The upper member has a heating part provided on the surface around the convex part,
The embossing according to claim 10, wherein at least a part of the periphery of the first embossed pattern is partially raised by heat from the heating unit to form an irregularly shaped second embossed pattern. Molding device for patterned bag-like containers. Lower member said upper member and / or the soft packaging material is placed is provided on the rotating body, characterized Rukoto contacting the convex portion on the surface of the flexible packaging material while continuously or intermittently rotating The shaping | molding apparatus of the bag-shaped container with an embossing pattern as described in any one of Claims 10-13 . A bag-like container that is molded from a soft wrapping material and filled and sealed with contents,
On at least one side of this bag-like container,
An upper member having a convex portion formed according to the embossed pattern to be formed is heated so that at least the convex portion is heated to a predetermined temperature, and then the convex portion is brought into contact with the surface of the soft packaging material. A bag-shaped container with an embossed pattern, in which a first embossed pattern having a predetermined shape is formed by partially shrinking the soft wrapping material and raising it to the outside . The first embossed pattern includes a long line-shaped component, and the long line-shaped first embossed pattern is formed along a portion where the peripheral edge of the bag-like container is sealed. A bag-like container with an embossed pattern according to claim 15 . The bag-like container with an embossed pattern according to claim 15 or 16 , wherein a second embossed pattern having an indefinite shape is formed at least around the periphery of the portion where the first embossed pattern is formed. 18. The bag-shaped container with an embossed pattern according to claim 17 , wherein at least a part of the second embossed pattern is formed along a seal portion at a periphery of the bag-shaped container. The first embossed pattern and / or the second embossed pattern are formed at the same position on one side surface and the other side surface of the bag-like container, and the first embossed pattern and / or the second embossed pattern are formed. The bag-shaped container with an embossed pattern according to any one of claims 15 to 18, wherein convex portions constituting the pattern protrude in different directions.

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