JP2014073858A - Spout for bag-like container and spout-provided bag-like container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spout for bag-like containers capable of preventing breaking of thin wall parts and cracking even when a spout-provided bag-like container falls upside down.SOLUTION: A spout 10 for bag-like containers comprises: a welding part 11; a cylindrical spout part 12 communicating with the inside of a bag-like container 50; and a plug 20 connected to the end of the spout part 12 through a breakable thin wall part 15 and blocking the end of the spout part 12. The plug 20 has a cylindrical part 21 connected to the end of the spout part 12 through the thin wall part 15, a knob flange 22 blocking the end surface of the cylindrical part 21 and extending outward from the cylindrical part 21, and a plate-like protrusion 23 extending in the flat direction of the bag-like container 50 to be welded with the welding part 11. The knob flange 22 is long in the flat direction of the bag-like container 50 to be welded with the welding part 11 and extends beyond the outside diameter of the cylindrical part 21 in the flat direction. The plate-like protrusion 23 has a thickness of 0.2-3 mm and a protrusion height of 1-20 mm.

Description

  The present invention relates to a spout for a bag-like container in which a stopper is connected to an end of a spout part via a thin part and a bag-like container with a spout.

  As a spout for a bag-like container in which a plug and a spout part can be manufactured by integral molding, there is a spout for a bag-like container in which a plug is connected to an end of the spout part via a thin part.

  For example, in Patent Document 1, a spout base fixed to a bag body and a spout top body are integrally formed of a synthetic resin material through a thin annular portion having an intermediate ring shape; the spout top body is in order from the outer end side. A knob, a stopper, a cross-sectional outer shape having a circular fitting portion and at least one protrusion projecting in the radial direction of the fitting portion; the spout top body for pouring the contents of the bag body The spout base is cut off at a thin wall portion; the spout base is provided with a spout passage having a circular cross section in which a cut-out portion of the spout top body cut off is fitted on the outer end side, and the spout base is provided with the spout base. Comprises an insertion groove into which the protrusion of the spout top can be inserted and removed in the axial direction and a step portion to which the protrusion of the spout top selectively engages in the circumferential direction; and the spout top Of the contents of the bag Bag spout to structure condition is disclosed that is used as a stopper fitted to the spout base in use process.

  Patent Document 2 discloses a spout with a stopper in a spout with a stopper that is integrally formed by connecting a spout main body portion and a stopper with a thin portion that can be broken, and is fixed to an opening end of a bag-like container. The plug comprises a knob portion and a plug portion that fits into the spout main body portion. The plug portion includes a short-diameter portion formed below the cylindrical portion following the bottom surface of the knob portion, and a horizontal axis orthogonal to the short-diameter portion. A long-diameter portion projecting in the direction, and an upper surface of the long-diameter portion is formed at a predetermined interval from an annular protrusion formed on the lower surface of the knob portion. An engagement protrusion having a thickness corresponding to a predetermined interval formed on the plug portion is formed by extending inward in the horizontal direction, and connects the upper end inner peripheral surface of the spout main body portion and the tip outer peripheral surface of the plug portion to a thin wall portion. Is formed, and the engaging protrusion of the spout main body is sandwiched between the annular protrusion of the removed stopper and the upper surface of the long diameter portion at the time of resealing. Configuration the spout-equipped bag-like container closure is disclosed urchin.

Japanese Patent Laid-Open No. 10-7157 JP 2002-29551 A

  As disclosed in Patent Documents 1 and 2, etc., in a spout for a bag-like container in which a stopper is connected to an end of a spout part through a thin part, a protrusion for a knob is formed on the upper surface of the stopper. Was established. Then, the handle was pushed up and the stopper was pushed up to break the thin portion, the stopper was removed from the spout, and the bag-like container was opened and closed.

  However, if the knob protrusion does not have a certain height or width, it cannot be pinched firmly by some people, and the removal workability of the plug is reduced. For this reason, when the protrusions for knobs are formed on the upper surface of the stopper, the product height of the entire bag-like container increases, which may cause problems such as poor appearance and increased installation space when displaying the products. there were.

  On the other hand, there is a method of providing a knob flange extending toward the outside of the spout part on the upper surface of the spout part instead of providing the knob protrusion on the upper surface of the plug.

  However, when such a flange is formed on the top surface of the plug body, the surface area of the top surface of the plug body increases, so that when the spout-equipped bag-like container with the spout for the bag-like container is dropped upside down, the spout is applied. Impact increases. As a result, the thin portion connecting the plug and the spout portion may be broken or cracked, and the contents may leak.

  Therefore, the object of the present invention is for a bag-like container that can prevent the contents from leaking due to the thin-walled portion breaking or cracking even if the spout-equipped bag-like container falls upside down. The object is to provide a spout and a spouted bag-like container.

In order to achieve the above object, a spout for a bag-like container according to the present invention is provided with a welded portion sandwiched between sheet materials on the front and back of the bag-like container, and standing from the welded portion, inside the bag-like container. A spout for a bag-like container comprising: a tubular spout that communicates with a spout that is connected to an end of the spout through a thin portion that can be broken and closes the end;
The plug body includes a cylindrical portion connected to an end portion of the spout portion via the thin-walled portion, a knob flange that closes an end surface of the cylindrical portion and extends outward of the cylindrical portion; A rib-like protrusion protruding from the outer surface opposite to the cylindrical portion of the knob flange, and a plate-like protrusion extending along the flat direction of the bag-like container welded to the weld portion;
The knob flange is long in the flat direction of the bag-like container welded to the weld portion, and protrudes from the outer diameter of the cylindrical portion in the flat direction,
The plate-like protrusion has a thickness of 0.2 to 3 mm, and a protruding height from the knob flange is 1 to 20 mm.

  According to the spout for a bag-like container of the present invention, when the spout-equipped bag-like container to which the spout for the bag-like container is attached falls upside down, the plate-like projections collide with the dropping surface to bag the spout for the bag-like container. The bag-like container is bent in the vicinity of the spout attachment part and dropped, so that the drop impact of the bag-like container containing the contents is applied to the thin-walled part of the bag-like container spout. It can be reduced, and it is possible to prevent the contents from leaking due to the thin-walled portion breaking or cracking.

  The spout for a bag-like container of the present invention preferably has a protruding height from the knob flange of 1 to 8 mm.

  It is preferable that the knob flange of the spout for a bag-like container of the present invention protrudes 3 mm or more from the outer diameter of the cylindrical portion in the flat direction. According to this aspect, the workability of removing the plug body from the spout portion can be improved.

  It is preferable that the plate-like projections of the bag-like container spout of the present invention are inclined so that both side edges or one side edge portion in the lengthwise direction approach upward. According to this aspect, when the spout-equipped bag-like container to which the spout for the bag-like container is attached is inclined obliquely so that the side edge of the plate-like protrusion collides, the side edge is inclined. Therefore, the spout for the bag-like container is promptly inclined to facilitate the bag-like container to bend and fall near the spout attachment part, so that the thin-walled part of the spout for the bag-like container is broken or cracked. It can be prevented more effectively.

  The plate-like projections of the bag-like container spout of the present invention preferably have a trapezoidal shape that is inclined such that both side edges or one side edge in the length direction approach upward. According to this aspect, when the spout-equipped bag-like container drops upside down, the central part of the plate-like protrusion protruding in a trapezoidal shape promotes the inclination of the bag-like container spout in the flat plane direction of the bag-like container. When the spouted bag-like container is tilted and falls upside down, the spout for the bag-like container is quickly tilted by the inclined side edge portion, so that the thin-walled portion of the spout for the bag-like container is more effectively broken and cracked. Can be prevented.

  The length of the base end portion of the plate-like protrusion of the bag-like container spout of the present invention is preferably longer than the outer diameter of the cylindrical portion and shorter than the knob flange. According to this aspect, when the portion protruding from the cylindrical portion of the knob flange is reinforced by the plate-like protrusion, the knob flange can be prevented from being broken when the knob flange is pushed up to break the thin portion.

  The cylindrical portion of the spout for a bag-like container of the present invention has an outer diameter that can be inserted into a broken opening of the spout portion in a state where the thin portion is broken and separated from the spout portion. It is preferable. According to this aspect, when the thin wall portion is broken and the plug body is separated from the spout portion, it becomes possible to insert the cylindrical portion of the plug body into the broken opening portion of the spout portion, so that the broken opening of the spout portion The part can be closed again with a plug.

  The spout-equipped bag-like container of the present invention includes the bag-like container spout and a bag-like container main body in which the welded portions of the bag-like container spout are sandwiched between the front and back sheet materials and welded. It is characterized by that.

  According to the spout-equipped bag-like container of the present invention, even if it falls upside down, the impact prevents the thin-walled portion of the spout for the bag-like container from being broken or cracked, and the contents leak. Can be prevented.

  According to the present invention, when the spout-equipped bag-like container to which the bag-like container spout is attached falls upside down, the plate-like protrusion collides with the dropping surface, so that the spout for the bag-like container Since the bag-like container bends and drops near the spout attachment part, the impact of the drop of the bag-like container containing the contents on the thin-walled part of the bag-like container spout can be reduced. It is possible to prevent the contents from leaking due to the thin-walled portion being broken or cracked.

It is a schematic perspective view of the bag-shaped container provided with the spout for bag-shaped containers of this invention. It is an expanded partial sectional view of the spout part of the bag-like container. It is a side view of the bag-like container. It is a state figure when the bag-like container falls upside down. It is a perspective view which shows the state which removed the plug from the spout part of the bag-like container. It is the schematic of the spout used in the Example, (a) is a top view, (b) is a side view. It is the schematic of the spout used in the Example, (a) is a top view, (b) is a side view. It is the schematic of the spout used in the Example, (a) is a top view, (b) is a side view. It is the schematic of the spout used in the Example, (a) is a top view, (b) is a side view.

  The spouted bag-like container of the present invention will be described with reference to FIGS.

  The spout-equipped bag-like container 60 includes a spout 10 and a bag-like container main body 50 in which the welded portion 11 of the spout 10 is sandwiched between front and back sheet materials 51 and 51 and is welded.

  There is no restriction | limiting as the sheet | seat material 51 which comprises the bag-shaped container main body 50, All can be used for a bag-shaped container. For example, polypropylene film, nylon film, polyester film, and these films, vapor-deposited thin film layer of inorganic oxide such as silicon oxide or alumina oxide, gas barrier coating layer, metal foil, ethylene vinyl alcohol copolymer (EVOH), etc. A laminated film in which is laminated.

  Next, the spout 10 will be described.

  As shown in FIGS. 2 and 3, the spout 10 has a welded portion 11 sandwiched and welded between sheet materials 51 on the front and back of the bag-like container body 50, and a bag-like container body standing from the welded portion 11. 50 is mainly composed of a cylindrical spout portion 12 communicating with the inside, and a plug body 20 connected to an end portion of the spout portion 12 through a thin portion 15 that can be broken and closing the end portion of the spout portion 12. ing.

  A flange portion 13 is provided below the spout portion 12 with a predetermined distance L from the weld portion 11. Although this flange part 13 is utilized as a hanger at the time of conveying the bag container 60 with a spout, since it is not necessarily required, you may abbreviate | omit.

  The plug body 20 is connected to the end portion of the spout portion 12 via an annular thin portion 15, and for the knob that closes the end surface of the tube portion 21 and extends outward from the tube portion 21. It has a flange 22 and a plate-like protrusion 23 projecting in a rib shape from the outer surface opposite to the cylindrical portion 21 of the knob flange 22.

  As shown in FIG. 2, the cylindrical portion 21 of the plug body 20 is composed of a base portion 21 a and a reduced diameter portion 21 b that has a tapered diameter, and the reduced diameter portion 21 b is inserted into the spout portion 12. ing.

  An annular rib 21c protrudes from the outer periphery of the base 21a.

  The base 21a and the rib 21c preferably have outer diameters that can be inserted into the broken opening of the spout 12 in a state where the thin wall 15 is broken and the plug 20 is separated from the spout 12. . The outer diameter of the rib 21c (hereinafter also referred to as the maximum diameter of the cylindrical portion 21), which is the maximum diameter of this portion, is preferably 100 to 110%, more preferably 100 to 102% of the inner diameter of the spout portion 12. If the maximum diameter of the cylinder part 21 is the said range, the plug body 20 can be inserted in the opening part of the spout part 12 easily and airtightly.

  The knob flange 22 of the plug body 20 is long in the flat direction of the bag-like container body 50 welded to the welded portion 11 and protrudes from the outer diameter of the cylindrical portion 21 in the flat direction. The protrusion length L1 of the knob flange 22 of the plug body 20 from the outer diameter of the cylindrical portion 21 in the above direction is preferably 3 mm or more, and more preferably 5 to 10 mm. Since the knob flange 22 protrudes from the outer diameter of the cylindrical portion 21 in the above direction, the thin flange portion 15 can be easily broken by pushing up the knob flange 22, and the plug body 20 can be easily removed from the spout portion 12. Can do. If the protruding length L1 of the knob flange 22 is 3 mm or more, the knob flange 22 can be more easily pushed up, and the plug body 20 can be removed from the spout portion 12 with good workability.

  The plate-like protrusion 23 of the stopper 20 has a shape extending along the flat direction of the bag-like container body 50 to be welded to the weld portion 11. In this case, the flat direction of the plate-like protrusion 23 does not have to be completely coincident with the flat direction of the bag-like container body 50, and may be a direction along a range of ± 30 °, for example. In this embodiment, the plate-like protrusion 23 is inclined so that the side edge portions 23a and 23a on both sides in the length direction approach upward, and the side edge portions 23a and 23a approach upward. In this way, it has an inclined trapezoidal shape. The side edge 23a. When the bag-like container 60 with a spout is tilted obliquely so that the side edge 23a of the plate-like protrusion 23 collides and drops upside down, the spout is inclined so as to approach the upper side. 10 can be promptly inclined to prevent the thin portion 15 of the spout 10 from breaking or cracking more effectively. Then, the plate-like protrusion 23 has a trapezoidal shape, so that the spout 10 is promoted to be inclined in the flat plane direction of the bag-like container body 50 by the central part of the plate-like protrusion protruding in the trapezoidal shape, and with the spout When the bag-like container 60 is tilted and falls upside down, the spout 10 can be quickly tilted by the tilted side edge 23a.

  The thickness T of the plate-like protrusion 23 is preferably 0.2 to 3 mm, and more preferably 0.5 to 1 mm. When the thickness T is less than 0.2 mm, the strength is inferior, and when the spout-equipped bag-like container 60 falls in the reverse direction, the plate-like protrusions 23 may be crushed or damaged. When the thickness T exceeds 3 mm, the impact when the spout-equipped bag-like container 60 falls in the reverse direction cannot be sufficiently dispersed, and the effect of preventing breakage and cracking of the thin portion 15 of the spout 10 is reduced.

  The protrusion height H of the plate-like protrusion 23 from the knob flange 22 is preferably 1 to 20 mm, and more preferably 1 to 8 mm. When the protruding height H is less than 1 mm, the effect of tilting the spout 10 to the side when the spout-equipped bag-like container 60 drops upside down is reduced, and the impact absorbing effect is reduced. When the protrusion height H exceeds 20 mm, the product height of the entire bag-like container increases, causing problems such as poor appearance and increased installation space when displaying the product. Furthermore, when the spout-equipped bag-like container 60 falls upside down, the plate-like protrusions 23 may be crushed or damaged.

  The length L2 of the base end portion of the plate-like protrusion 23 is preferably shorter than the knob flange 22 and longer than the outer diameter of the cylindrical portion 21. Furthermore, it is preferably longer than the outer diameter of the cylindrical portion 21 by 1 mm or more, more preferably 2 to 5 mm. By making the length L2 longer than the outer diameter of the cylindrical portion 21, the portion protruding from the cylindrical portion 21 of the knob flange 22 is reinforced by the plate-like protrusion 23, and the thin flange portion 15 is pushed up by pushing up the knob flange 22. It is possible to prevent the knob flange 22 from being broken when it is broken.

  The length L3 of the upper end portion of the plate-like protrusion 23 is preferably 3 mm or more and L2 or less. When the length L3 is less than 3 mm, when the spout-equipped bag-like container 60 drops upside down, the effect of tilting the spout 10 sideways becomes poor, and the impact absorbing effect is reduced. When L2 is exceeded, when the spout-equipped bag-like container 60 is inclined obliquely and falls upside down, the effect of promptly inclining the spout 10 is reduced, and the impact absorbing effect is reduced.

  In this embodiment, the plate-like protrusions 23 are inclined so that the side edges 23a, 23a on both sides in the length direction approach upward, but the side edges 23a, 23a on both sides in the length direction. 23a may have a shape that rises substantially in parallel. That is, the length L2 of the base end portion and the length L3 of the upper end portion in the plate-like protrusion 23 may be substantially the same shape. Further, it may have a shape inclined so that only one side edge portion approaches upward.

  The material of each member of the spout 10 is not particularly limited, and materials used for conventional bag-shaped container spouts can be used. Examples thereof include low density polyethylene (LDPE), linear low density polyethylene (LLDPE), high density polyethylene (HDPE), and polypropylene (PP).

  This spout-equipped bag-like container has a plate-like protrusion 23 extending along the flat direction of the bag-like container body 50 welded to the welded portion 11 on the outer surface opposite to the cylindrical portion 21 of the knob flange 22 of the stopper 20. 4, when the spout-equipped bag-like container 60 drops upside down, as shown in FIG. 4, the plate-like projections 23 collide with the drop surface, and the spout 10 is flattened on the bag-like container body 50. Since the bag-like container body 50 bends and drops in the vicinity of the attachment portion A of the spout 10, the impact of the drop impact on the thin portion 15 of the spout 10 can be reduced, and the thin portion 15 breaks. Or the contents can be prevented from leaking.

  Further, since the plug 20 of the spout 10 has the knob flange 22, the knob flange 22 is pushed up by, for example, hooking a finger between the knob flange 22 and the cylindrical portion 21, so that the thin portion 15 can be easily formed. The plug body 20 can be broken and can be easily removed from the spout portion 12.

  In addition, the plug body 20 removed from the spout portion can be easily recapped by inserting the cylindrical portion 21 of the plug body 20 into the opening of the spout portion 12 as shown by the phantom line in FIG. it can.

  6 to 9 is sandwiched between sheet materials (alumina oxide-deposited polyester (transparent deposition-PET) 12 μm / biaxially stretched nylon (ONY) 15 μm / linear low density polyethylene (LLDPE) 100 μm)). Then, about 70 g of jelly was filled as the contents, and a spouted bag-like container (total weight: about 75 g) of Production Examples 1 to 8 was produced. The spout and dimensions used in each production example are summarized in Table 1.

  In the spout 10 a of FIG. 6, a plate-like protrusion 231 having a shape extending along the flat direction of the bag-like container body 50 is formed on the knob flange 22 of the stopper 20. The plate-like protrusions 23a have a trapezoid shape that is inclined so that the side edge portions on both sides in the length direction approach toward the upper side.

  7 has a rectangular plate-like protrusion 232 having a shape extending along the flat direction of the bag-like container body 50 on the knob flange 22 of the stopper 20.

  Further, the spout 10c of FIG. 8 is formed with a plate-like protrusion 233 having a shape extending in a direction perpendicular to the flat direction of the bag-like container body 50 on the knob flange 22 of the stopper 20. The plate-like protrusions 23c have a trapezoidal shape that is inclined so that the side edge portions on both sides in the length direction approach upward.

  Further, in the spout 10d of FIG. 9, the upper surface of the knob flange 22 of the plug body 20 is flat, and no protrusion is formed.

  A drop test was performed on the spouted pouch-shaped containers (n = 5) of Production Examples 1 to 8, and even one piece with contents leaking was marked as x, and all the test articles were marked with no leakage. The results are summarized in Table 2. In addition, the drop test performed the operation which drops a bag-like container with a spout straight at 150 cm in height with a guide from the spout side three times.

  As is clear from the results in Table 2, the spout-like bag-like container is turned upside down by forming a plate-like protrusion having a shape extending along the flat direction of the bag-like container body on the knob flange of the stopper. When dropped, it was possible to reduce the impact of the drop impact on the thin part of the spout, and to prevent the contents from leaking.

10: Spout 11: Welding part 12: Spout part 13: Flange part 15: Thin part 20: Plug body 21: Tube part 21a: Base part 21b: Reduced diameter part 21c: Rib 22: Flange for knob 23: Plate-like protrusion 50: Bag-like container body 51: Sheet material 60: Bag-like container

In order to achieve the above object, a spout for a bag-like container according to the present invention is provided with a welded portion sandwiched between sheet materials on the front and back of the bag-like container, and standing from the welded portion, inside the bag-like container. A spout for a bag-like container comprising: a tubular spout that communicates with a spout that is connected to an end of the spout through a thin portion that can be broken and closes the end;
The plug body includes a cylindrical portion connected to an end portion of the spout portion via the thin-walled portion, a knob flange that closes an end surface of the cylindrical portion and extends outward of the cylindrical portion; A rib-like protrusion protruding from the outer surface opposite to the cylindrical portion of the knob flange, and a plate-like protrusion extending along the flat direction of the bag-like container welded to the weld portion;
The knob flange is long in the flat direction of the bag-like container welded to the weld portion, and protrudes from the outer diameter of the cylindrical portion in the flat direction,
The plate-like projection is the 0.2~3mm thickness, Ri height 1~20mm der protruding from the knob flange, on both sides or one side of the side edge portions in the longitudinal direction is upward It is characterized by being inclined to approach .

According to the spout for a bag-like container of the present invention, when the spout-equipped bag-like container to which the spout for the bag-like container is attached falls upside down, the plate-like projections collide with the dropping surface to bag the spout for the bag-like container. Since the bag-like container is bent and dropped near the spout attachment part, the drop impact of the bag-like container containing the contents is applied to the thin-walled part of the bag-like container spout. It can be reduced, and it is possible to prevent the contents from leaking due to the thin-walled portion breaking or cracking.
In addition, when a spout-equipped bag-like container to which a spout for a bag-like container is attached tilts obliquely so that the side edge of the plate-shaped protrusion collides and falls upside down, the side edge is inclined. The bag-shaped container spout is quickly tilted to facilitate the bending and dropping of the bag-shaped container in the vicinity of the spout mounting portion, so that the thin-walled portion of the bag-shaped container spout can be more effectively broken and cracked. Can be prevented.

Claims (8)

A welded portion sandwiched and welded between the front and back sheet materials of the bag-like container, a tubular spout portion standing from the welded portion and communicating with the inside of the bag-like container, and a break at the end of the spout portion A spout for a bag-like container, which is connected through a possible thin-walled portion and has a stopper that closes the end,
The plug body includes a cylindrical portion connected to an end portion of the spout portion via the thin-walled portion, a knob flange that closes an end surface of the cylindrical portion and extends outward of the cylindrical portion; A rib-like protrusion protruding from the outer surface opposite to the cylindrical portion of the knob flange, and a plate-like protrusion extending along the flat direction of the bag-like container welded to the weld portion;
The knob flange is long in the flat direction of the bag-like container welded to the weld portion, and protrudes from the outer diameter of the cylindrical portion in the flat direction,
The plate-like protrusion has a thickness of 0.2 to 3 mm, and a protruding height from the knob flange is 1 to 20 mm.   The spout for a bag-like container according to claim 1, wherein a protruding height from the knob flange is 1 to 8 mm.   The spout for bag-like containers according to claim 1 or 2, wherein the knob flange protrudes 3 mm or more from the outer diameter of the cylindrical portion in the flat direction.   The spout for a bag-like container according to any one of claims 1 to 3, wherein the plate-like protrusion is inclined so that both side edges or one side edge in the length direction approach upward.   The spout for a bag-like container according to claim 4, wherein the plate-like protrusion has a trapezoidal shape that is inclined so that both side edges or one side edge in the length direction approach upward.   The length in the base end part of the said plate-shaped protrusion is longer than the outer diameter of the said cylinder part, and is formed in length shorter than the said flange for knobs. Spout for bag-like containers.   The cylindrical portion has an outer diameter that can be inserted into a broken opening portion of the spout portion in a state where the thin portion is broken and separated from the spout portion. A spout for a bag-like container according to Item.   A spout for a bag-like container according to any one of claims 1 to 7, and a bag-like container main body in which a weld portion of the spout for a bag-like container is sandwiched between front and back sheet materials and welded. A spouted pouch-like container characterized by the above.