JP2008239200A - Manufacturing process for pouch and spouted pouch, pouch, and spouted pouch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pouch manufacturing process and a pouch in which a narrow interface part between a filling unsealed part and a spout installing unsealed part can be sealed with an appropriate seal pressure. <P>SOLUTION: This invention is characterized in that before a corner part 4 of a pouch main body 1 is cut to form a spout installing unsealed part 2, the pouch main body has an expanded interface seal part 9 expanding from an interface 6 over a cutting planed line 5 into a cutting region 4A at the corner part 4, and then a part of the pouch main body 1 is cut at the cutting planed line 5 to form a spout installing unsealed part 3 and at the same time an interface seal part 7 is formed by a residual portion of the expanded interface seal part 9. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a method for producing a pouch, a method for producing a pouch with a spout using the pouch produced by the method, and a pouch and a pouch with a spout.

When filling the contents into a pouch with a spout, supply in the form of a pouch with a spout that has been pre-fitted with the spout is bulky and poor in transportation efficiency, so the pouch and spout are supplied separately and attached just before filling It is desirable to do.
When a spout is attached to the corner of the pouch, as shown in FIG. 5, a rectangular pouch 100 with the upper side 101 unsealed is used as a supply form for the filling process (see FIG. 5A). Then, in the filling step, the corner 102 of the upper side 101 is obliquely cut to form the unsealed portion 103 for spout attachment (see FIG. 5B), and the spout 104 is attached to the unsealed portion 103 for spout attachment. Then, the unsealed portion is sealed to form the spout seal 106 (see FIGS. 5C and 5D). Conventionally, a method has been used in which the contents are filled from the filled unsealed portion 105, which is the remaining portion of the unsealed upper side 101, and after filling, the filled unsealed portion 105 is sealed to form a filled seal 107 (FIG. 5). (See (E)).
Such a method of cutting the pouch 100 and attaching the spout 104 in a batch with the content filling equipment is described in, for example, Patent Document 1.

However, when cutting away the corners, it is expected that not a little cutting waste will be generated. If possible, it is desirable to avoid performing the cutting process with a filling facility.
Therefore, it is conceivable to supply the pouch having the shape shown in FIG. 5B with the corners removed in advance to the filling process. Then, the unsealed portion 103 for attaching the spout and the unsealed portion 105 for filling are removed. Since the boundary portion 108 has an angular shape protruding in an obtuse angle shape, the front and back films of the pouch body easily open from the boundary portion 108, and there is a possibility that it becomes an obstacle when the pouch is supplied or when the spout is attached.

  In order to prevent the front and back films from opening at such a boundary portion, for example, as shown in Patent Document 2, a point seal is provided at the boundary portion 108 between the unsealed portion 105 for filling and the unsealed portion 103 for mounting the spout. It is conceivable to provide However, if only such a narrow range is to be heat sealed, there is a problem that the sealing pressure per unit area at the time of heat sealing tends to be excessive, leading to defects such as protrusion of the molten resin and film cracking.

Although it is conceivable to increase the area of the point seal, it is not possible to increase the area of the point seal due to restrictions on the size of the unsealed portion 105 for filling and the unsealed portion 103 for attaching the spout. An attempt to increase the area of the point seal without changing the size of the unsealed portion for filling 105 and the unsealed portion for mounting spout 103 will inevitably increase the width of the entire pouch.
Japanese Patent Application Laid-Open No. 06-48401 Japanese Patent Laying-Open No. 2006-7593 (FIG. 9)

  The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to appropriately provide a narrow boundary between the unsealed portion for filling of the pouch body and the unsealed portion for mounting the spout. An object of the present invention is to provide a method for manufacturing a pouch that can be sealed with a suitable sealing pressure and a pouch. Moreover, it is providing the manufacturing method of the pouch with a spout using the pouch, and a pouch with a spout.

In order to achieve the above object, the invention according to claim 1 is characterized in that an unsealed portion for filling that fills one side of the pouch body, and an unsealed portion for attaching a spout adjacent to the unsealed portion for filling. The unsealed portion for mounting the spout is formed by cutting a corner portion of one side of the pouch body along a planned cutting line, and a boundary portion between the unsealed portion for filling and the unsealed portion for mounting the spout is formed. A method of manufacturing a pouch configured to be sealed by a boundary seal,
Before cutting off the corners of the pouch body and forming an unsealed part for mounting the spout, an enlarged boundary part seal that extends from the boundary part to the cut area of the corner part from the boundary part is formed on the pouch body,
Thereafter, a part of the pouch body is cut along a planned cutting line to form an unsealed portion for mounting the spout, and a boundary portion seal is formed by the remaining portion of the enlarged boundary portion seal.
The invention according to claim 2 is characterized in that the enlarged boundary portion seal extends along one side of the pouch body.

  The invention according to claim 3 supplies the pouch and spout manufactured by the above-described method, and seals the spout attached to the unsealed portion of the pouch with the spout, and then fills the contents from the unsealed portion for filling. And sealing.

The invention according to claim 4 has an unsealed portion for filling that fills one side of the pouch body, and an unsealed portion for attaching a spout adjacent to the unsealed portion for filling, and the unsealed portion for attaching the spout The pouch is formed by cutting a corner of one side of the pouch body along the planned cutting line, and the pouch having a configuration in which the boundary between the unsealed portion for filling and the unsealed portion for attaching the spout is sealed by a boundary seal Because
The sealing region of the boundary seal is a region including an end side of the unsealed portion for filling and an end side of the unsealed portion for spout attachment.

The invention according to claim 5 is characterized in that the spout is attached to the unsealed portion for attaching the spout of the pouch and sealed, and the spout seal and the boundary seal overlap each other.
The invention according to claim 6 is characterized in that the pouch with spout is filled with the contents from the unsealed portion for filling and sealed, and the sealed filling seal overlaps with the boundary portion seal together with the spout seal. To do.

  According to the first aspect of the present invention, when sealing the boundary portion, since the expanded boundary portion seal that expands not only the boundary portion but also the resection region is provided, the sealing pressure can be dispersed, The boundary can be sealed with an appropriate sealing pressure. Moreover, since the expansion boundary part seal is expanded to the resection area, the shape and size of the pouch itself are not affected.

  According to the second aspect of the present invention, since the enlarged boundary portion seal is provided along one side of the pouch body, the enlarged boundary portion seal is easily formed using a seal plate of a normal pouch. be able to.

  According to the invention which concerns on Claim 3, since it does not cut | disconnect by filling equipment, while filling equipment can be simplified, problems, such as the cutting waste at the time of filling, can be eliminated.

  According to the invention of claim 4, since the sealing region of the boundary seal includes the end side of the unsealed portion for filling and the end side of the unsealed portion for spout mounting, the front and back films are completely Sealed and there is no risk of getting caught between films.

  According to the invention which concerns on Claim 5, since the seal part and boundary part seal | sticker of a spout are piled up, a boundary part seal | sticker can be hidden with a spout seal.

  According to the invention which concerns on Claim 6, since the filling seal | sticker has overlapped with the boundary part seal | sticker with the seal part of the spout, while being able to cover a boundary part seal | sticker completely, joining strength can be raised more.

The present invention will be described below based on the illustrated embodiments.
FIG.1 and FIG.2 has shown the manufacturing process of the pouch with a spout which concerns on embodiment of this invention.
The present invention has an unsealed portion 2 for filling that fills one side of the pouch body 1, the upper side 1 a in the figure, and an unsealed portion 3 for mounting a spout adjacent to the unsealed portion 2 for filling. The unsealed portion 3 for mounting is formed by cutting away the corner 4 on the upper side of the pouch body 1 along the planned cutting line 5, and a boundary portion 6 between the unsealed portion 2 for filling and the unsealed portion 3 for spout mounting. A pouch having a configuration in which is sealed by the boundary seal 7 is manufactured. The planned cutting line 5 is a virtual line scheduled to be cut.

FIG. 1 (A) shows a form of the pouch before cutting its corners.
This form before cutting of the pouch body is a bag body in which the left and right sides and the lower side of a pair of rectangular front and back flexible films are heat sealed, the side seal 11 on the left and right sides, and the lower seal on the lower side. 12 is formed with a predetermined width. In the illustrated example, a hanging piece 14 separated by a slit 13 is provided at a corner of the lower side seal 12, and a hanging hole 15 is provided in the hanging piece 14.
A zipper 17 is mounted on the inner side in the vicinity of the lower side seal 12 at an adjacent portion sandwiching the hanging piece 14 and the slit 13. When the pouch with a spout is suspended and used, the zipper 17 can be opened to replenish the contents, or the concentration can be adjusted by adding water. By supporting the zipper 17 by placing a finger on the slit 13 and the side, it is easy to maintain the open state of the zipper 17 without interfering with the hanging piece 14.
The upper side 1a of the pouch body 1 is not sealed. One corner 4 of the upper side 1a, in the illustrated example, a corner provided with the hanging piece 14 on the lower side is opposite to the upper side 1a along the planned cutting line 5. It is designed to be excised. The length of the planned cutting line 5 is determined according to the length of the base portion 8a to which the spout 8 is sealed. In the illustrated example, the upper end of the planned cutting line 5 extends approximately to the middle side of the upper side 1a of the pouch body 1 and extends to the side side at an angle of 45 degrees with respect to the upper side 1a.

The part along the planned cutting line 5 is the part that becomes the unsealed part 3 for spout mounting, and the remaining part on the upper side opposite to the corner part cut from the upper end of the planned cutting line 5 is the unsealed part 2 for filling. It has become. In particular, since the pouch with a spout of this embodiment is provided with the zipper 17 on the lower side as described above, the unsealed portion for filling cannot be disposed, so the unsealed portion 2 for filling and the unsealed portion 3 for mounting the spout are provided. Will be adjacent.
The pouch body 1 includes a boundary portion 6 between the unsealed portion 2 for filling and the unsealable portion 5 for the spout attachment 3 to the cut region 4A of the corner portion 4 beyond the planned cut line 5. An expanding boundary seal 9 is formed.
The enlarged boundary portion seal 9 includes the boundary portion 6 and seals a predetermined range of the upper side 1a of the corner portion 4 on the side of the cut region 4A except for the unsealed portion 2 for filling. The enlarged boundary seal 9 disperses the sealing pressure per unit area that acts on the boundary 6 during heat sealing. In the illustrated example, it extends to the corner end along the upper side 1a of the triangular cut region 4A, and is connected to the side seal 11 at the corner end.

In the example shown in the figure, this enlarged boundary seal is formed to have the same width as that of the side seal 11 of the pouch body 1. For example, as shown in FIG. The seal width in the cut region 4A at the corner 4 may be made larger than the seal width at the boundary 6 to further enhance the effect of dispersing the seal pressure.
However, it is only necessary to reduce the sealing pressure per unit area that acts on the boundary portion 6 during heat sealing, and the enlarged boundary portion seal 9 may not be connected to the side seal 11. Moreover, it may be configured such that the cut region 4A of the corner 4 is entirely sealed. Furthermore, it is not necessary to form along the upper side 1a of the corner | angular part 4, and various patterns are applicable.
The enlarged boundary seal 9 is heat-sealed together with the left and right side seals 11 and the lower side seal 12 at the time of bag making.

FIG. 1B shows a step of cutting off the corners.
The corner 4 is cut along the planned cutting line 5. This excision process is not performed in the content filling process, but is supplied in the excised form in the filling process.
By cutting the corner portion 4, the unsealed portion 3 for spout attachment is formed along the cutting line, and the boundary portion 6 portion of the enlarged boundary portion seal 9 remains, and the unsealed portion 3 for spout attachment A boundary seal 7 is formed at the boundary 6 between the unsealed portions 2 for filling.

In this example, since the enlarged boundary portion seal 9 is formed along the upper side 1a, the seal region of the boundary portion seal 7 includes the oblique side portion 7c along the oblique side of the unsealed portion 3 for spout mounting and the unsealed filling portion. It has a trapezoidal shape including two sides of the upper side part 7a along the upper side 1a of the part 2 side. The vertical side portion 7d on the side of the unsealed portion for filling 2 facing the oblique side portion 7c is a right-angled side perpendicular to the upper side portion 7a, and the lower side portion 7b on the unsealed portion 2 side for spout mounting facing the upper side portion 7a is It is formed in parallel with the upper side portion 7a.
Thus, by cutting off the corner 4, a pouch having a configuration in which the boundary portion 6 between the unsealed portion 2 for filling and the unsealed portion 3 for mounting the spout is sealed by the boundary portion seal 7 is completed.
Since the boundary portion 6 between the unsealed portion 2 for filling and the unsealed portion 3 for attaching the spout is sealed, it is possible to prevent the front and back films from being opened at the time of conveyance or by a filling machine. In particular, since the boundary seal 7 is sealed to the upper side 1a of the pouch body 1 and the end of the cut oblique side, it is possible to reliably prevent the front and back films from being turned up.

FIGS. 2A and 2B show a process of attaching a spout to the supplied pouch.
That is, the unsealed portion 3 for mounting the spout is opened, the base portion 8a of the spout 8 is inserted, and the unsealed portion 3 for mounting the spout is heat sealed to the base portion 8a of the spout 8 to form the spout seal 3A.
The spout seal 3A and the boundary seal 7 overlap each other, and the spout seal 3A is formed with a predetermined width along the cut oblique side over the entire length, and the intersection position where the inner edge parallel to the oblique side intersects the upper side is the boundary. It is near the end of the part seal 7 on the unsealed part 2 side for filling. In addition, the corners of the lower side 7b and the vertical side 7d of the boundary seal 7 partially protrude from the inner edge.

Next, as shown in FIG. 2C, the content is filled from the unsealed portion 2 for filling, and the unsealed portion 2 for filling is sealed with a filling seal 2A. The sealed filling seal 2A is superimposed on the boundary seal 7 together with the spout seal 3A.
The filling seal 2A extends with a predetermined width along the upper side 1a, but the width is larger than the width of the boundary seal 7, and the boundary seal 7 is completely hidden by the filling seal 2A. Therefore, in this example, the filling seal 2 </ b> A completely covers the boundary seal 7, and the spout seal 3 </ b> A partially covers the boundary seal 7.

The process of attaching the spout 8 and the process of filling and sealing the contents are performed on an integrated apparatus.
The boundary portion 6 is pressurized and heated in a triple manner with the boundary portion seal 7, the spout seal 3 </ b> A and the filling seal 2 </ b> A, but since it is sealed with an appropriate pressure at the boundary portion seal 7, Defects such as protrusion and film breakage do not occur.
Since they are overlapped and bonded in this way, the bonding strength is high. In particular, the pouch of this example is used with the spout 8 suspended downward, and stress is likely to concentrate on the boundary portion 6 protruding in an obtuse angle. This boundary seal 7 is heated and pressurized in a triple manner, so that the bonding strength is high and there is no possibility of seal leakage.

3 and 4 show a modification of the above embodiment.
In this modification, only the form of the pouch and the form of the spout are different, the manufacturing procedure is exactly the same as the above-described embodiment, and in the following description, only the points different from the above-described embodiment will be described. The same components are denoted by the same reference numerals and description thereof is omitted.
This pouch does not have a structure in which a suspended piece is separated from the lower side through a slit, but is provided with a suspended hole 15 in the lower side corner portion 16.

The size of the spout 28 is smaller than that of the above embodiment, and the swelling of the pouch body 1 when the spout 28 is attached and sealed is small, so that the unsealed portion for filling along the upper side at the end of the spout seal 23A 23A1 is provided with an extension extending to the second side. The end of this extension 23A1 is located closer to the unsealed portion 2 for filling than the end of the boundary seal 7, and the whole including the corners of the lower side 7b and the vertical side 7d of the boundary seal 7 is completely. Covering. In addition, the other end portion of the spout seal 23 </ b> A is provided with an extended portion that extends along the side so as to overlap the side seal 11.
On the other hand, the end of the filling seal 2A on the boundary seal 7 side overlaps the boundary seal 7 together with the spout seal 23A, but the end is closer to the front than the intersection of the oblique side and the upper side 1a cut off the corner 4. The spout seal 23A is overlapped with the extension 23A1 at the end of the spout seal 23A. Therefore, in this example, the spout seal 23 </ b> A completely covers the boundary seal portion 7, and the filling seal 2 </ b> A partially covers the boundary seal 7.

  In the above embodiment, an example in which the present invention is applied to a hanging type pouch has been shown. However, the present invention is not limited to the hanging type, and the shape of the bottom portion may be a self-supporting type pouch or other corner portion. It can be applied to various pouches that are excised and fitted with a spout.

FIG. 1 shows the procedure of a method for manufacturing a pouch according to an embodiment of the present invention. FIG. 1 (A) shows the form of the pouch before cutting the corner, and FIG. 1 (B) shows the corner. The figure which shows the pouch which is a molded article after excising, and the figure (C) is a figure showing other patterns of the expansion boundary part seal of a corner. FIG. 2 is a diagram showing a spout attachment process and a content filling / sealing process for a pouch manufactured by the manufacturing method of FIG. FIG. 3 shows a modification of the pouch of FIG. 1. FIG. 3 (A) shows the form of the pouch before cutting off the corner, and FIG. 3 (B) shows the molded product after cutting off the corner. It is a figure which shows a certain pouch. FIG. 4 is a diagram showing a spout attachment process and a content filling / sealing process for the pouch manufactured by the manufacturing method of FIG. FIG. 5 is a diagram showing a manufacturing procedure of a conventional pouch with a spout.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pouch main body 1a Upper side 2 Unsealed part 2A for filling Filling seal 3 Unsealed part 3A for attaching a spout Spout seal 4 Corner part (upper side)
4A Cutting area 5 Planned cutting line 6 Boundary part 7 Boundary part seal 7a Upper side part 7b Lower side part 7c Oblique side part 7d Vertical side part 8 Spout 8a Base part 9 Enlarging boundary part seal 11 Side seal 12 Lower side seal 13 Slit 14 Hanging piece 15 Hanging hole 17 Zipper 28 Spout

Claims (6)

An unsealed portion for filling that fills one side of the pouch body, and an unsealed portion for spout mounting adjacent to the unsealed portion for filling, the unsealed portion for mounting the spout on one side of the pouch body A method for producing a pouch having a configuration in which a boundary portion between a non-sealing portion for filling and a non-sealing portion for mounting a spout is sealed by a boundary portion seal, which is formed by cutting a corner portion along a planned cutting line,
Before cutting off the corners of the pouch body and forming an unsealed part for mounting the spout, an enlarged boundary part seal that extends from the boundary part to the cut area of the corner part from the boundary part is formed on the pouch body,
Thereafter, a part of the pouch main body is cut at a planned cutting line to form an unsealed portion for mounting the spout, and a boundary portion seal is formed by the remaining portion of the enlarged boundary portion seal. .   The method of manufacturing a pouch according to claim 1, wherein the enlarged boundary portion seal extends along one side of the pouch body.   The pouch and spout manufactured by the manufacturing method according to claim 1 or 2 are supplied, and after the spout is mounted and sealed on the unsealed portion for mounting the spout of the pouch, the contents are filled from the unsealed portion for filling. A method for producing a pouch with a spout, characterized by comprising: An unsealed portion for filling that fills one side of the pouch body, and an unsealed portion for mounting the spout adjacent to the unsealed portion for filling, and the unsealed portion for mounting the spout is a corner of one side of the pouch body. A pouch having a configuration in which the boundary portion between the unsealed portion for filling and the unsealed portion for mounting the spout is sealed by a boundary portion seal, which is formed by cutting the portion along the planned cutting line,
2. The pouch according to claim 1, wherein the sealing area of the boundary seal is an area including an end side of the unsealed portion for filling and an end side of the unsealed portion for mounting the spout.   5. A pouch with a spout according to claim 4, wherein the spout is attached to the unsealed portion for mounting the spout of the pouch according to claim 4, and the boundary seal is overlapped with the spout seal.   The pouch with spout according to claim 5 is filled with the contents from the unsealed portion for filling and sealed, and the sealed filling seal overlaps with the boundary portion seal together with the spout seal. Pouch.

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