JP5453587B2 - Standing pouch with spout - Google Patents

Description

  The present invention relates to a standing pouch with a spout to which a spout is attached obliquely.

  Conventionally, as a standing pouch with a spout of this type, a pouch body formed in a bag shape by heat-sealing the edges of a sheet and having a gusset portion at the bottom, and one corner portion at the top of the pouch body What is provided with the spout mounted | worn so that it may protrude diagonally upward is known.

  Such a pouch is filled with the contents from the spout, but generally, the spout is held so that its center line (axis) is directed in the vertical direction, and the contents are filled from the upper opening.

  However, since the spout is mounted obliquely with respect to the pouch body, the pouch body is inclined if the center line of the spout is set in the vertical direction. Therefore, the contents are filled in the slanted pouch body from above, but since the bottom gusset portion is provided, the left and right weight balance is lost and the balance becomes unbalanced. In other words, as the contents are filled into the slanted pouch body, the bottom gusset portion is filled with more content on the side where the bottom gusset portion exists with the spout as the center. The existing side is heavier than the opposite side, and the balance between the left and right sides is lost.

  Before filling the contents or immediately after the start of filling, the weight of the pouch itself is so light that it is possible to hold it correctly so that the spout faces up and down. The balance between the left and right sides is lost as the number of slags gradually increases, making it difficult to accurately hold the spout. As a result, there is a problem that filling failure and damage to the pouch body are likely to occur, particularly when high-speed filling is performed.

  In addition, as a standing pouch in which the spout is mounted obliquely, the following Patent Document 1 describes a vertically long rectangular standing pouch having a large overall height with respect to the full width of the pouch body, but is filled from the spout as described later. Since the weight balance between the left and right is not taken into consideration, such a pouch is not suitable for high-speed filling.

JP 2003-327263 A

  Therefore, the present invention has been made in view of the above-described conventional problems, and in a standing pouch with a spout that is attached obliquely, when filling the contents from the spout while holding the spout so that the spout is directed vertically. It is an object of the present invention to provide a standing pouch with a spout that has an excellent left-right weight balance and is suitable for high-speed filling.

  As a result of intensive studies to solve the above-mentioned problems, the present inventors have found that the right and left weight balance becomes substantially equal when a certain condition is satisfied. That is, the standing pouch with a spout according to the present invention has a pouch body having at least both side edges and a bottom part heat-sealed and having a bottom gusset part, and a corner part on one side edge side of the upper part of the pouch body obliquely upward. In a standing pouch with a spout having a spout mounted so as to protrude, the inner line of the bottom gusset seal part in the bottom gusset part is concave, and in the front view in the flat state before filling, the center line of the spout is From the lowest part of the inner line of the bottom gusset seal part to the uppermost part on the other side edge side of the inner line, the entire width of the pouch body is A, the entire height of the pouch body is B, and the lower end of the pouch body The height of the bottom gusset part to the turn-up part is C, and is the highest on one side edge of the pouch body. A / B and C / D are substantially equal when D is the horizontal distance from the position located on the side to the position of the inner line of one side edge seal part at the height of the folded part of the bottom gusset part. It is characterized by being equal. However, A / B and C / D being substantially equal means that when A / B is 1, C / D is in the range of 0.9 to 1.1.

  Like the pouch of this configuration, the spout is set within a predetermined inclination angle range, and the overall width and height of the pouch body, the height from the lower end of the pouch body to the folded portion of the bottom gusset part, and one side of the pouch body If the horizontal distance from the outermost position on the edge to the position of the inner line of one side edge seal part at the height of the folded part of the bottom gusset part satisfies the predetermined relationship, the spout is It was found that the right and left weight balance was excellent even when the required amount was filled from the spout while holding the spout in the direction.

Further, pouch body of full width and overall height are equal to each other, from the point located closest to the outside at the other side edge of the path Uchi body, the other side edge sealed portion at the height of the folded portion of the bottom gusset portion of the inner line When the horizontal distance to the position is E, D> E.

  When the entire width and height of the pouch body are equal to each other as in this configuration, the spout is set within the predetermined inclination angle range, and at the height of the folded portion of the bottom gusset portion, at one side edge of the pouch body. The horizontal distance from the outermost position to the position of the inner line of one side edge seal portion is determined from the outermost position on the other side edge of the pouch body to the other side edge seal portion. It was found that if it was set larger than the horizontal distance to the position of the inner line, the left and right weight balance was excellent.

  As described above, in the standing pouch with a spout in the present invention, when filling the contents from the spout while holding the spout so that the spout is directed in the vertical direction, the left and right weight balance is excellent. Since the pouch is stabilized at the time of filling, filling failure and pouch breakage are prevented, and filling can be performed at high speed.

The front view which shows the state before filling of the standing pouch with a spout in one Embodiment of this invention. The front view which shows the attitude | position at the time of filling of the standing pouch with a spout in the embodiment. The front view which shows the state before filling of the standing pouch with a spout in other embodiment of this invention. The front view which shows the state before filling of the standing pouch with a spout in other embodiment of this invention. The front view which shows the state before filling of the standing pouch with a spout in other embodiment of this invention.

  Hereinafter, a standing pouch with a spout according to an embodiment of the present invention will be described with reference to FIG. The standing pouch with a spout shown in FIG. 1 is a pouch for containing a liquid such as liquid or jelly-like food or a fluid such as a detergent as a content, and is particularly suitable for refilling. The pouch is formed into a bag shape by heat-sealing a predetermined portion of a flexible sheet, and the pouch body 1 can accommodate the contents, and the pouch body 1 is attached to the pouch body 1 by heat sealing to fill the contents. And a spout 2 used for taking it out.

  The spout 2 can be used in various forms. The spout 2 is formed into a substantially boat-like shape in a cross-sectional view that gradually decreases in thickness from the center to both sides, and is attached by heat sealing so as to be sandwiched between the pouch body 1. A generally cylindrical mouth portion 22 projecting outward from the mounting portion 21, and a pair of flange portions 23 projecting radially outward of the mouth portion 22, The pouch body 1 and the heat-sealable synthetic resin are integrally formed by molding. When filling, the pair of flange portions 23 of the spout 2 are held so as to be sandwiched from the left and right. Further, a screw portion is formed on the upper outer peripheral surface of the mouth portion 22, and a cap 24 is screwed onto the screw portion to seal the upper opening. The cap 24 has a structure having a function of clearly showing opening, so-called tamper evidence characteristics. For example, a structure in which an annular tamper evidence band is cut off from the cap 24 body and remains on the spout 2 when opened, or a part of the annular tamper evidence band is cut to form a band shape by opening the cap 24 body. Moreover, the structure etc. which are removed from the spout 2 can be adopted. FIG. 1 shows a flat state before filling, and the cap 24 is screwed after filling. FIG. 1 shows a state where the cap 24 is screwed for convenience.

  The pouch body 1 is a standing type that has a bottom gusset portion 30 and can stand by itself, and is formed in a substantially rectangular shape that is long in the vertical direction, and its peripheral portion is heat-sealed to form a bag shape. In FIG. 1, the cross hatched portion is a heat sealed portion. Specifically, the pouch body 1 is composed of a pair of main sheet pieces constituting the front surface and the back surface, and a gusset sheet piece that is folded inside the lower portion of the main sheet piece to form the bottom gusset portion 30. Yes. The left corner portion 31 (corner portion on one side edge side) in the upper part of the main sheet piece is cut obliquely. The inner surfaces of the sheet are heat-sealed at the diagonally cut corner portion 31, left and right side edge portions, and upper edge portion, respectively, and the corner seal portion 32, the left and right side edge seal portions 35 and 36, and the upper edge seal portion 37, respectively. When the corner portion 31 is heat sealed, the attachment portion 21 of the spout 2 is simultaneously heat sealed.

  Further, the bottom gusset seal portion 33 is formed by heat-sealing the periphery of the gusset sheet piece to the main sheet piece. In FIG. 1, the folded portion 30a of the bottom gusset portion 30 is indicated by a broken line. Further, on both side edges of the gusset sheet piece, a cutout portion 34 that is cut out, for example, in a semicircular shape, is formed at a location facing each other in the front and back direction in a folded state, and the cutout portion 34 is located on the front side. The main sheet piece and the back side main sheet piece are directly heat-sealed. Therefore, the gusset sheet piece is prevented from opening in the front and back direction at the position of the notch 34. Although the pair of main sheet pieces are configured separately from the two sheets, the single sheet may be folded in half and configured integrally, or the main sheet piece and the gusset sheet piece may be integrated. You may comprise integrally from a sheet | seat.

  Here, as a sheet | seat which comprises the pouch main body 1, an outer layer which consists of a biaxially stretched polyester film, a biaxially stretched polyamide film, etc., a low density polyethylene, a high density polyethylene, a linear low density polyethylene, a polypropylene, a metallocene type | system | group, for example A multi-layer laminate film consisting of an inner layer made of a heat-fusible resin such as polyethylene is used, and if necessary, gas barrier properties such as a film on which an inorganic substance such as ethylene vinyl alcohol copolymer, aluminum foil, or silicon oxide is deposited. What laminated | stacked the film etc. is also used. The spout 2 is formed of a synthetic resin that can be heat-sealed on the inner surface of the sheet constituting the pouch body 1, for example, a heat-sealable resin such as polyethylene or polypropylene.

  Next, details of the seal portion will be described. As described above, the seal portion includes the corner seal portion 32, the left and right side edge seal portions 35 and 36, the upper edge seal portion 37, and the bottom gusset seal portion 33. The corner seal portion 32 extends linearly in a direction orthogonal to the center line 50 (axis line) of the spout 2 and is formed with a constant width. Note that the spout 2 is attached to a substantially central portion of the corner seal portion 32. In FIG. 1, the left side edge seal portion 35 (one side edge seal portion 35) is formed from the lower end of the corner seal portion 32 downward to the bottom gusset seal portion 33. In FIG. 1, the inner line 45 of the left side edge seal portion 35 (the line forming the storage space for storing the contents and constituting the outer edge of the storage space) is gradually lowered to the right (ie, The slanted line is slanted toward the housing space. Since the left side edge of the pouch body 1 extends linearly in the vertical direction, the width of the left side edge seal portion 35 becomes wider as it goes downward. Further, the right side edge seal portion 36 is formed to extend linearly with a certain width in the vertical direction from the upper edge of the pouch body 1 to the bottom gusset seal portion 33. Since the right side edge of the pouch body 1 extends linearly in the vertical direction, the inner line 46 of the right side edge seal portion 36 also extends linearly in the vertical direction. Furthermore, the inner line 43 of the bottom gusset seal portion 33 is formed between the lower ends of the inner lines 45 and 46 of the left and right side edge seal portions 35 and 36, and is concave like a mortar from the left and right sides to the center. It has become. In addition, the substantially center part of the inner side line 43 of the bottom part gusset seal part 33 is the lowest part 43a located in the lowest side.

  Here, the width of the left side edge seal portion 35 at the height of the folded portion 30a of the bottom gusset portion 30 (from the position located on the outermost side on the left side edge of the pouch body 1 from the folded portion of the bottom gusset portion 30). The horizontal distance to the position of the inner line 45 of the left side edge seal portion 35 at the height of 30a) is D, and the width of the right side edge seal portion 36 at the height of the folded portion 30a of the bottom gusset portion 30 is D. (Horizontal distance from the most outward position on the right side edge of the pouch body 1 to the position of the inner line 46 of the right side edge seal portion 36 at the height of the folded portion 30a of the bottom gusset portion 30) ) Is E, D> E. Accordingly, the inner line 43 of the bottom gusset seal portion 33 is eccentrically located on the right side, and the lowermost portion 43 a is also located on the right side of the center in the width direction of the pouch body 1.

  FIG. 1 shows a flat state before filling, but a device for balancing the left and right weights during filling is devised. First, the mounting angle of the spout 2. As described above, the spout 2 is mounted so that the center line 50 thereof is orthogonal to the corner portion 31. However, the center line 50 of the spout 2 needs to be within a predetermined range. That is, the center line 50 of the spout 2 passes through the rising region 43c from the lowermost portion 43a of the inner line 43 of the bottom gusset seal portion 33 to the uppermost portion 43b on the right side (the lower end of the right side edge seal portion 36). FIG. 1 shows three one-dot chain lines, the middle one of which is the center line 50 of the spout 2 in FIG. 1 and passes through the uppermost portion 43 b on the right side of the inner line 43 of the bottom gusset seal portion 33. . A one-dot chain line 51 on the left side shown in FIG. 1 shows a case where the center line 50 of the spout 2 passes through the middle between the lowermost portion 43a of the inner line 43 of the bottom gusset seal portion 33 and the uppermost portion 43b on the right side. Also in this case, the weight balance is excellent because it passes through the rising region 43c. On the contrary, the one-dot chain line 52 on the right side shown in FIG. 1 indicates a case where the center line 50 of the spout 2 has deviated to the right side from the rising region 43c. In this case, the left side of the center line 50 at the time of filling. The part becomes too heavy and the weight balance is lost.

  Next, when the total width of the pouch main body 1 is A, the total height of the pouch main body 1 is B, and the height from the lower end of the pouch main body 1 to the folded portion 30a of the bottom gusset portion 30 is C, the above-mentioned D is also included. Thus, the relationship that A / B and C / D are substantially equal is satisfied. Since the pouch body 1 in FIG. 1 is vertically long, A / B is less than 1. Therefore, C / D is also less than 1. That is, it is necessary that C <D. A / B and C / D being substantially equal means that C / D is in the range of 0.9 to 1.1 when A / B is 1, and both are substantially If equal, the weight balance is excellent. In addition, in order to ensure independence, D needs to be below half of A.

  The pouch shown in FIG. 1 that satisfies the above conditions is filled with the contents such that the center line 50 of the spout 2 faces in the vertical direction as shown in FIG. Generally, about 80 to 90% (required amount filling) of the accommodation space is filled. However, as described above, the cap 24 is mounted after filling, but for convenience, the cap 24 is shown screwed. The pouch shown in FIG. 1 has an excellent weight balance at the time of filling, and particularly occurs when the overall weight becomes large, such as when more than half is filled or when a necessary amount is filled. Easy unbalance is unlikely to occur. Accordingly, it is possible to reliably prevent filling failure and damage to the pouch body 1 that may occur as a result of imbalance, which is particularly advantageous for high-speed filling.

  On the other hand, in the case of a pouch in which D is equal to E in FIG. 1, for example, when the left side edge seal portion 35 has the same width as the right side edge seal portion 36 and both widths are equal. Was unsuitable for high-speed filling because the weight balance was biased to the left during filling.

  Further, in the above-mentioned Patent Document 1 shown in FIG. 1, A / B is 0.83, whereas C / D is 1.11, and A / B is 1 in the drawing. C / D corresponds to 1.34 of A / B. Thus, the thing of patent document 1 is that A / B and C / D are not substantially equal, and both differ greatly, Therefore, the weight balance of right and left will collapse at the time of filling.

  In the above-described embodiment, the inner line 45 of the left side edge seal portion 35 is a slanted line. However, the present invention is not limited to this. For example, as shown in FIG. After extending vertically up to the height, it may be a curve curved convexly from there to the accommodation space side. The length of the vertical portion may be lengthened or conversely shortened, and the vertical portion may not be provided. In any case, it is preferable that the width of the left side edge seal portion 35 be narrower toward the upper side, and in particular, gradually as the distance between the inner line 45 and the center line 50 of the spout 2 is directed toward the corner seal portion 32. It is preferable to set so as to be smaller.

  Further, as shown in FIG. 4, the left side edge may be cut out inward along the inner line 45 of the side edge seal portion 35 so that the width of the left side edge seal portion 35 is constant. Good. In this case, D is from the position located most outward on the left side edge of the pouch body 1 to the position of the inner line 45 of the left side edge seal part 35 at the height of the folded part 30a of the bottom gusset part 30. The horizontal distance of.

  Furthermore, although the case where the shape of the pouch main body 1 was a vertically long substantially rectangular shape was demonstrated, even if it is a horizontally long substantially rectangular shape and a substantially square shape, it is excellent in the weight balance of the right and left at the time of filling by satisfy | filling the said conditions.

  In addition, when the pouch main body 1 is substantially square, the following may be performed. For example, in the pouch shown in FIG. 5, the overall height B of the pouch body 1 shown in FIG. 3 is reduced so that the overall width A and the overall height B are equal. Similarly, the center line 50 of the spout 2 passes through the rising region 43c on the right side. Thus, even when the pouch body 1 is substantially square, the center line 50 of the spout 2 needs to pass through the same conditions as described above, that is, the right rising region 43c.

  When the pouch body 1 is substantially square, the left and right balance is easier to achieve than the substantially rectangular shape, so D> E is set. In the pouch of FIG. 5, since the left and right side edges are both vertical lines, the width of the left side edge seal portion 35 at the height of the folded portion 30a of the bottom gusset portion 30 is D, and the right side edge seal is also the same. The width of the part 36 becomes E, and by satisfying D> E, the left and right weight balance during filling can be achieved. However, the upper limit of D is substantially the same value as the height C from the lower end of the pouch body 1 to the folded portion 30a of the bottom gusset portion 30, and D is set to 1 in the same manner as described above. Means that C is 0.9 to 1.1.

  In the case of FIG. 5 as well, the left side edge may be cut out similarly to the case shown in FIG.

  The inner line 43 of the bottom gusset seal portion 33 may have a concave shape having left and right inclined portions and a horizontal portion therebetween, and in that case, the right inclined portion becomes the rising region 43c.

DESCRIPTION OF SYMBOLS 1 Pouch main body 2 Spout 21 Mounting part 22 Portion part 23 Flange part 24 Cap 30 Bottom part gusset part 30a Folding part 31 Corner part 32 Corner seal part 33 Bottom part gusset seal part 43 Inner line 43a Bottom part 43b Top part 43c Rising area 34 Notch part 35 Left side edge seal (one side edge seal)
45 Inner line 36 Right side edge seal part (the other side edge seal part)
46 Inner line 37 Upper edge seal part 50 Center line

Claims (2)

A pouch body having at least both side edges and bottom heat-sealed and having a bottom gusset part, and a spout mounted so as to protrude obliquely upward at a corner part on one side edge side in the upper part of the pouch body. In standing pouch with spout,
The inner line of the bottom gusset seal part in the bottom gusset part is concave, and in the front view in the flat state before filling, the center line of the spout is from the bottom of the inner line of the bottom gusset seal part to the other side of the inner line Through the rising area to the top of the edge,
A position where the overall width of the pouch body is A, the overall height of the pouch body is B, the height from the lower end of the pouch body to the folded portion of the bottom gusset part is C, and the outermost position on one side edge of the pouch body And A / B and C / D are substantially equal, where D is the horizontal distance from the position of the inner line of one side edge seal portion at the height of the folded portion of the bottom gusset portion Standing pouch with spout. Pouch body of full width and overall height are equal to each other, from the point located closest to the outside at the other side edge of the path Uchi body, to a position inside the line of the other side edge sealed portion at the height of the folded portion of the bottom gusset portion The standing pouch with a spout according to claim 1 , wherein D> E, where E is a horizontal distance.

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