Refill pouch

Abstract

To provide a refill pouch in which an opening area of a pouring passage is prevented from becoming small even when a pouring portion is inserted into a mouth of a bottle to be refilled by folding the pouring portion in a width direction.SOLUTION: A refill pouch has a content storage section 13 formed by sealing outer peripheries of multiple bag sheets 11 stacked in a thickness direction with an outer seal, and outer seals are formed on both sides of a pouring path 14 communicating with the storage section. The refill pouch includes: a valley section 17 recessed from the outside of the bag toward the inside of the bag; a pouring section 16 protruding from the valley section 17; and a stretch seal 34 extending from the valley section 17 toward the inside of the bag. Side edges of the stretch seal 34 are configured to allow the pouring section 16 to be folded using as a guide.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a refill pouch. [Background technology]

[0002] As shown in Patent Documents 1 to 4, many refill pouches are made by sealing the peripheries of multiple bag sheets stacked in the thickness direction with a peripheral seal, thereby forming a storage section for the contents between the multiple bag sheets, and the peripheral seals are formed on both sides of a pouring passage communicating with the storage section, and the tip of the pouring section that opens the pouring passage is inserted into the mouth of a refill bottle to pour the contents into the refill bottle.The peripheral seals of these conventional refill pouches have a substantially constant width.

[0003] On the other hand, if the mouth of the refill bottle is small, the pouring part is inserted into the mouth of the refill bottle by bending it widthwise, but if the bending curve is formed on the pouring path, the opening area of the pouring path becomes small, resulting in a problem of reduced pouring volume. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6031885 [Patent Document 2] Patent No. 5789969 [Patent Document 3] Patent No. 6686422 [Patent Document 4] Patent No. 5359447 Summary of the Invention [Problem to be solved by the invention]

[0005] To provide a refill pouch in which the opening area of the pouring path is prevented from becoming smaller even when the pouring part is inserted into the mouth of a refill bottle by folding the pouring part in the width direction, for example. [Means for solving the problem]

[0006] The present invention provides a refill pouch in which the outer peripheries of a plurality of bag sheets stacked in the thickness direction are sealed together with an outer periphery seal to form a storage section for contents between the plurality of bag sheets, and the outer periphery seals are formed on both sides of a pouring path communicating with the storage section, the refill pouch comprising a valley portion recessed from the outside of the bag toward the inside of the bag, a pouring portion protruding from the valley portion, and an extension seal extending from the valley portion toward the inside of the bag, and configured so that the pouring portion can be folded using the side edges of the extension seal as guides.

[0007] The present invention can be implemented such that the stretch seal has a tapered shape in which its width decreases as it moves from the outside of the bag toward the inside of the bag, and the left and right side edges of the stretch seal have straight portions that approach each other as they move toward the inside of the bag.

[0008] When implementing the present invention, the inner edge of either of the outer seals on both sides of the pouring path and the side edge of one side of the extension seal form a continuous, straight inner edge, and the pouring portion can be configured to be bent using the continuous inner edge as a guide.

[0009] The length of the stretch seal can be set to be equal to or at least half the length between the intersection of the extension lines of the straight sections on both the left and right sides of the stretch seal and the lowest, most recessed part of the valley section. [Effects of the Invention]

[0010] The present invention provides a refill pouch that prevents the opening area of the pouring path from becoming smaller when the pouring portion is inserted into the mouth of a refill bottle by, for example, folding the pouring portion widthwise. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a plan view of a pouch according to one embodiment of the present invention. [Figure 2] An enlarged view of the main part of the pouch. [Figure 3] FIG. 10 is an enlarged view of a main part of a pouch according to another embodiment of the present invention. [Figure 4] FIG. 10 is an enlarged view of a main part of a pouch according to still another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. (Overall composition)

[0013] As shown in Figures 1 and 2, the pouch in this embodiment is a refill pouch for storing fluid contents, such as detergent, hair wash, or treatment liquid, in a storage section 13, and for pouring the contents into a refill container or the like from an outlet path 14 in an outlet section 16 at the tip.

[0014] This pouch is made by stacking two bag sheets 11 in the front-to-back direction (thickness direction of the sheets) and closing the periphery with an outer seal to form a sealed storage section 13.

[0015] In this example, the bag sheet 11 is made of a composite sheet consisting of a laminate of multiple layers of resin film, metal foil, etc., but the configuration can be changed as appropriate depending on the type of contents, etc.

[0016] In this example, the peripheral seal includes a bottom seal 21 that defines the bottom of the pouch, a left side seal 22 and a right side seal 23 that extend upward from both the left and right sides of the bottom seal, a top seal 24 that closes the top opening 12 at the top of the pouch, and pouring portion seals (upper pouring portion seal 31 and lower pouring portion seal 32) that define the pouring portion 16.

[0017] In this example, the pouch has a generally rectangular shape as shown in Figure 1, but the shape of the pouch and the configuration of the peripheral seal can be modified in various ways, such as by changing to another polygonal or circular shape. The bottom seal 21, left side seal 22, and right side seal 23 may be gusseted bags with gussets, or may be self-standing bags. Furthermore, in this example, the top opening 12 is left open when the pouch is shipped, and the pouch is closed with the top seal 24 after the contents are poured through the top opening 12. However, the opening for pouring the contents may be located at a position other than the top of the bag, and the spout 16 may be located approximately in the center of the top in the left-right direction. (Regarding the pouring portion 16)

[0018] 2, the outer periphery of the spout 16 is defined by an upper spout seal 31 on the upper right side and a lower spout seal 32 on the lower left side of the figure, and the tip sides of the upper spout seal 31 and the lower spout seal 32 are continuous via a tip seal 33 at the tip of the spout 16, thereby closing the tip of the spout path 14. When the user cuts off the tip of the spout 16, the spout path 14 is opened and the contents are poured out. The base end of the upper pouring portion seal 31 is continuous with the top seal 24 to be formed later, and the base end of the lower pouring portion seal 32 is continuous with the upper end of the left side seal 22 .

[0019] The spout 16 has a valley 17 at its base on the upper right side, recessed from the top seal 24 toward the inside of the bag, and protrudes from this valley 17 toward the upper left of the bag exterior. A tip bulge 19 is formed near the tip of the spout 16. This tip bulge 19 serves as a tab when the user opens the spout path 14 and may be provided as needed. In the example shown in Figures 3 and 4, multiple tear weakening lines 20, formed by partially tearing the inner film of the laminated bag sheet 11, are formed from the tip of the valley 17 and the base of the tip bulge 19 toward the bottom spout seal 32, making it easy for the user to grip. However, the tear weakening lines 20 may be omitted and simply cut away with scissors. Note that, in the example shown in Figures 3 and 4, the embossed portion 41 is provided in the spout 16 to enhance the conductivity of the spout path 14, but this may be omitted. (Regarding the bottom spout seal 32)

[0020] The lower pouring portion seal 32 may be symmetrical to the upper pouring portion seal 31, but in this example it is shaped like a gentle arc. It may also be shaped like the seal shown in Figures 3 and 4. (Regarding stretch seal 34)

[0021] The spout portion 16 is provided with a stretch seal 34 that extends from the valley portion 17 toward the inside of the bag. The stretch seal 34 is defined by a left stretch seal edge 35 and a right stretch seal edge 36. The stretch seal 34 has a tapered shape that narrows as it extends from the outside of the bag toward the inside of the bag, but the outer side of the bag has a wide portion 37 with a large seal width (the length between the left stretch seal edge 35 and the right stretch seal edge 36). The seal width of this wide portion 37 is wider (the length between the edges of the seal) than the left side seal 22 and the right side seal 23 of the outer peripheral seals.

[0022] As described above, the left edge 35 and the right edge 36 of the stretch seal approach each other as they move toward the inside of the bag, and the left edge 35 of the stretch seal on the pouring path 14 side has a straight portion. This left edge 35 of the stretch seal is smoothly continuous with the inner edge 38 of the upper pouring portion seal 31 on the pouring path 14 side (i.e., the inner edge 38 of the tip bulge 19). In this example in particular, the two edges 35, 38 form a continuous, straight inner edge 39. The continuous inner edge 39 not only functions to allow the contents to be poured smoothly, but also functions as a guide when folding the pouring portion 16 (a folding guide function). (Bending guide function)

[0023] The folding guide function will be explained in detail. Refill pouches are often used by inserting the opened pouring portion 16 into the opening (not shown) of a refill container to transfer the contents without spilling. In this case, if the opening of the refill container is small, the pouring portion 16 may be inserted by folding it in half along its length in a V-shape. However, if it is folded in half in a V-shape, the pouring portion 16 does not widen sufficiently, which reduces the flow path area of the pouring path 14, making it difficult to pour smoothly and taking a long time. In contrast, the pouch of the present invention has an elongated seal 34 with a wide portion 37 and a continuous inner edge 39 adjacent to the wide portion 37, making it easier to fold the spout portion 16 along the continuous inner edge 39.

[0024] By bending the pouring portion 16 using the continuous inner edge 39 as a guide in this way, the pouring portion 16 can be bent while preventing the flow path area of the pouring passage 14 from being reduced.

[0025] Furthermore, in this embodiment, the continuous inner edge 39 is set to an appropriate length to reliably perform its folding guide function. Specifically, the length (L1) of the stretch seal 34 is preferably equal to or at least half the length (L2) between the intersection A of the extension lines of the left stretch seal edge 35 and the right stretch seal edge 36 and the lowest recessed portion C of the valley portion 17.

[0026] More specifically, Point A: Intersection of an extension line of the left edge 35 of the stretch seal and an extension line of the right edge 36 of the stretch seal. Point B: Intersection point of the center line CL between the extension line of the left edge 35 of the stretch seal and the extension line of the right edge 36 of the stretch seal and the inner edge of the stretch seal 34. Point C: Intersection of the center line CL between the extension line of the left edge 35 of the stretch seal and the extension line of the right edge 36 of the stretch seal and the outer edge of the stretch seal . Point D: Intersection point of a perpendicular line perpendicular to the center line CL at point C and the left edge 35 of the stretch seal. Point E: Intersection point of a perpendicular line perpendicular to the center line CL at point B and the right edge 36 of the stretch seal. Length of the wide portion 37: Distance between points D and E. Then, it can be characterized by two parameters: the area of triangle ADE and the distance between points B and C. The function in this case is By setting the area of the triangle ADE and the above distance to an appropriate size, it becomes easy to hold when opening the package (the area of the triangle ADE is sealed to increase rigidity, and it can also be embossed to make it non-slip). By setting the distance between points B and C to an appropriate length, the highly rigid seal portion of the stretch seal 34 becomes longer, making it easier to fold back along the straight line AD. As described above, the present invention is not limited to the above examples, and can be implemented in various modifications within the scope of the gist of the present invention. [Explanation of symbols]

[0027] 11 bag sheets 12 Heaven opening 13 Storage area 14 Pouring route 16 Pour section 17 Valley 18 lowest part 19 Tip bulge 20 Opening weakened line 21 Bottom seal 22 Left side seal 23 Right side seal 24 Heaven Seal 31 Upper spout seal 32 Bottom outlet seal 33 Tip seal 34 Stretch seal 35 Left edge of extension seal 36 Right edge of extension seal 37 Thick part 38 Common-law marriage 39 Continuous inner edge 41 Embossed section

Claims

1. The outer peripheries of the plurality of bag sheets stacked in the thickness direction are sealed with an outer periphery seal, thereby forming a storage space for the contents between the plurality of bag sheets, In a refill pouch in which the outer circumferential seal is formed on both sides of the pouring passage communicating with the storage section, The bag has a valley portion recessed from the outside toward the inside of the bag, a spout portion protruding from the valley portion, and a stretch seal extending from the valley portion toward the inside of the bag, A refill pouch characterized in that the spout portion can be folded using the side edges of the stretch seal as guides.

2. The stretch seal has a tapered shape in which its width decreases as it moves from the outside of the bag toward the inside of the bag, 2. The refill pouch according to claim 1, wherein the left and right side edges of the stretch seal have linear portions that approach each other as they extend toward the inside of the pouch.

3. 3. The refill pouch according to claim 2, wherein an inner edge of either one of the outer seals on both sides of the pouring path and a side edge on one side of the stretch seal form a continuous, linear inner edge, and the pouring portion can be folded using the continuous inner edge as a guide.

4. 4. The refill pouch according to claim 2, wherein the length of the stretch seal is equal to or at least half the length between the intersection of the extension lines of the straight portions on both the left and right sides of the stretch seal and the lowest, most recessed portion of the valley portion.

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