JP2013049490A - Spout and container with spout - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow an expanded state of a container body to be easily maintained, irrespective of the residual amount of contents, in a container with a spout to which a skirt part 3 of the spout is attached between outer edges of a sheet member constituting the bag-shaped container body.SOLUTION: In this spout, a skirt part 3 of the spout has the entire shape having a gradually expanded diameter toward a distal end, and respective parts of facing inner peripheral surfaces of the skirt part 3 swell inward. Accordingly, thick parts 13 thicker than the other parts are formed at the facing positions.

Description

  The present invention relates to a spout attached to a bag-like container main body as a spout, a spout or a take-out port for contents, and a spout-equipped container having the spout attached to a bag-like container main body. More specifically, for example, it is attached as a drinking mouth, spout or outlet to a container body that contains a liquid beverage, a liquid food, an infusion bag (for example, an infusion bag), a liquid detergent for refilling, various powders, and the like. The present invention relates to a spout and a spout-equipped container in which a spout is attached to the container body.

  Patent Document 1 discloses a cylindrical mouth portion and a tubular hem portion that is connected to one end of the mouth portion, and a tip end portion of which is sandwiched between sheet materials constituting a bag-like container body and heat-sealed. For the spout with the skirt, the shape of the skirt is gradually expanded from the mouth side toward the tip, and the tip that is sandwiched between the sheet materials is formed into a cylindrical shape with a constant diameter. . Further, Patent Document 1 also discloses that the skirt portion can be deformed.

JP-A-10-273154

  By the way, when the container main body in a container with a spout makes a bag shape, there exists a problem which a container main body tends to be crushed with taking out the contents. When the container main body is crushed, the movement of the contents in the container main body is hindered, and it becomes difficult to smoothly move the contents to the attachment side of the spout, and it becomes difficult to take out the contents.

  An object of this invention is to make it easy to maintain the container main body in a container with a spout in the swelled state irrespective of the residual amount of the contents.

  For the above purpose, the present invention provides a spout capable of exerting a spreading force on a wide range of a container body.

  The spout of the present invention has a cylindrical mouth part and a cylindrical hem that is connected to one end of the mouth part, and at least the tip part is sandwiched between sheet materials constituting the bag-like container body and heat-sealed. And the skirt is elastically squeezable and has a shape in which the entire diameter gradually increases from the mouth side toward the tip. Since each part bulges inward, a thick part having a thickness larger than the thickness of the other part is formed at a position facing each other.

  The spout according to the present invention includes, as a preferable aspect thereof, the diameter of the end portion on the mouth portion side of the skirt portion is larger than the diameter of the end portion on the hem portion side of the mouth portion, and a step is formed therebetween. .

  Moreover, this invention also provides the container with a spout which has the spout of the said invention.

  The spout-equipped container of the present invention is such that the hem of the spout of the present invention is sandwiched between the outer edge portions of the stacked sheet materials with the mouth side outward, and the sheet material and the hem portions are heat-sealed. The spout seal portion, and the outer edge seal portion formed by heat-sealing the outer edge portions of the sheet material including the right and left of the skirt portion continuously with the spout seal portion, the sheet material is formed into a bag-like container body. The spout is attached to the container body and the entire edge on the skirt side of the outer edge seal portion formed adjacent to the left and right sides of the skirt portion is along the expanded shape of the hem portion. While each inclining inward, the thick part of the said skirt part is located in the left-right direction, It is characterized by the above-mentioned.

In the spouted container of the present invention, the tip edge of the skirt portion coincides with an inner edge extension line extending in the opposite direction from the inner edge of the outer edge seal portion formed adjacent to the left and right of the skirt portion, Entering outside the inner edge extension line,
The container body is a self-supporting bag,
The container body is a standing pouch,
Is included as a preferred embodiment thereof.

  The spout of the present invention has a hem that spreads toward the end, and this skirt is attached by being sandwiched between sheet materials constituting the container body. The skirt attached to the container body acts on the region in the extending direction of the divergent shape to apply a force to maintain the container body in an expanded state, and can prevent the container body from being crushed over a wide range. it can. Therefore, even if the contents are reduced, the container main body is not easily crushed and the contents can be smoothly moved within the container main body, so that the contents can be easily taken out.

  By the way, when a skirt part is comprised with a hard material, formation of a spout seal part is performed using the sealing board which has a curved part corresponding to the shape of a skirt part.

  On the other hand, if the skirt can be crushed elastically, it can be elastically restored after the skirt is temporarily crushed by sandwiching it with a sealing plate from the outside of the sheet material to form the spout seal portion. The spouted container can be manufactured with a general flat sealing plate without preparing a special sealing plate. In addition, if the diameter of the end on the mouth side of the hem is made larger than the diameter of the end on the hem side of the mouth, and a step is formed between them, the diameter of the hem is changed to the diameter of the mouth. Regardless of the size, the container body can be expanded more greatly, and it is reinforced by the step portion, so that it is easy to obtain a repulsive force for elastically restoring the skirt once crushed by the seal plate.

  In particular, when the crushing direction by the seal plate is the up-down direction, if the thick-walled portion is positioned in the left-right direction, that is, at both ends of the crushed spout, the thick-walled portion resists the crimping force. To support both ends of the hem. Thereby, when the bottom part is crushed, it is suppressed that the upper and lower inner surfaces of a bottom part are pressed strongly. Therefore, the inner surface of the skirt is not heat-sealed, and the function of the spout serving as a drinking mouth, a spout or a taking-out mouth is not impaired.

  The spout-equipped container of the present invention uses the spout of the present invention having the above-mentioned flared hem, and the edge on the skirt side of the outer edge seal portion formed adjacent to the left and right of the hem The whole is inclined inward along the expanded diameter of the skirt. Therefore, the force which inflates a container main body demonstrated about the spout of this invention can be made to act effectively. Moreover, since the container with a spout of this invention uses the spout of the said this invention, the effect demonstrated about the spout of the said this invention can be acquired further.

  In the spouted container of the present invention, the leading edge of the skirt is aligned with the inner edge extension line of the outer edge seal portion formed adjacent to the left and right of the hem, or is inserted outside the inner edge extension line. If this is done, the contents near the tip of the skirt can be smoothly moved into the spout as compared with the case where the tip of the skirt is protruded inward. Also, if the container body is a self-supporting bag having a bottom surface, particularly a standing pouch, the lower side of the container body can be inflated by the presence of the bottom surface, and the upper side of the container body can be inflated by the hem of the spout. Since it can, the whole container body can be expanded.

  Hereinafter, the spout and the container with a spout according to the present invention will be further described with reference to the drawings. In the drawings described below, the same reference numerals denote the same components.

<First reference spout and first reference spout container>
FIG. 1 is a sectional view showing an example of a first reference spout according to a reference example of the present invention, FIG. 2 is a plan view showing an example of a first container with a reference spout according to a reference example of the present invention, and FIG. 4 is a perspective view of the first reference spout-equipped container shown in FIG. 2, FIG. 4 is an enlarged plan view showing an attachment state of the first reference spout according to the present invention to the container body, and FIG. 5 is a first reference according to the present invention. It is explanatory drawing of an effect | action of a reference spout and a container with a 1st reference spout.

  As shown in FIG. 1, the first reference spout 1 is composed of a mouth portion 2 and a skirt portion 3 connected to one end of the mouth portion 2. The mouth portion 2 has a male screw 4 formed on the outer peripheral surface thereof, and can be opened and closed by a cap 6 in which a female screw 5 for screwing the male screw 4 is cut. The skirt 3 has a shape in which the entire diameter gradually increases from the mouth 2 side toward the tip (the side opposite to the side connected to the mouth 2).

  The first reference spout 1 can be made of a hard material (for example, a hard synthetic resin), but can be easily attached to a container body 7 (see FIGS. 2 and 3) described later by thermal fusion. Therefore, it is preferable that at least the skirt 3 can be crushed elastically. When at least the skirt 3 can be crushed elastically, a material having flexibility is used as a constituent material of the first reference spout 1. Specifically, for example, a soft synthetic resin such as polyethylene, polypropylene, or polyester can be used.

  Hereinafter, the case where the flexibility which can be crushed elastically at least to the skirt part 3 will be described.

  The first reference spout 1 can have a single-layer structure of the soft synthetic resin, but can also have a multilayer structure in which a heat-fusible resin layer such as polyethylene or polypropylene is provided as the outermost layer. In particular, the synthetic resin constituting the innermost layer is made of a synthetic resin having a higher melting point than the synthetic resin constituting the outermost layer, so that the hem is attached to the container body 7 (see FIGS. 2 and 3) described later by heat fusion. It becomes easy to prevent heat fusion between the inner surfaces of the portion 3. Further, the same effect can be obtained by adding a particulate inorganic pigment such as titanium oxide to the synthetic resin constituting the innermost layer.

  When the first reference spout 1 is made of a synthetic resin, it can be manufactured by a blow molding method or an injection molding method, but it is preferable to use a blow molding method because the molding is easy. Moreover, when manufacturing the 1st reference spout 1 by a blow molding method, MFR (melt flow rate) of polyethylene or polypropylene, which is a preferable constituent material in the case of giving flexibility to the skirt 3, is 0.1 to 7 Is preferably 0.0, more preferably 1.5 to 2.0.

  As shown in FIG. 2, the skirt 3 is heat-sealed with the tip portion sandwiched between the sheet materials 8 a and 8 b constituting the container body 7. The skirt 3 is gradually reduced in thickness from the mouth 2 side toward the tip in order to make it easy to elastically crush the tip at the time of heat-sealing and to make it easier to return elastically after heat-sealing. Is preferred. Also. It is preferable that the diameter of the end portion of the hem portion 3 on the mouth portion 2 side is larger than the diameter of the end portion of the mouth portion 2 on the hem portion 3 side, and a step 12 is formed therebetween. In this way, the diameter of the skirt 3 can be increased regardless of the diameter of the mouth 2 and the container body 7 can be expanded more, and it is reinforced at the step 12 portion. It becomes easy to obtain a repulsive force for elastically restoring the crushed skirt 3.

  Next, the first reference spout-equipped container 11 using the first reference spout 1 will be described.

  As shown in FIGS. 2 and 3, the container body 7 has a bag shape. The container body 7 in the first reference spout-equipped container 11 has a self-supporting bag shape formed by the sheet materials 8a and 8b constituting the front and back surfaces and the sheet material 8c constituting the bottom surface. The container body 7 can be a four-side sealed bag shape, a three-side sealed bag shape, etc. in addition to this self-supporting bag shape. However, since the entire container body 7 is easy to inflate, a self-supporting bag shape is preferable. A standing pouch is the best. Further, as the sheet materials 8a, 8b, and 8c, for example, a laminate of a heat-fusible resin layer such as polyethylene or polypropylene on an outer layer film such as polyamide, polyester, or polypropylene can be used.

  The first reference spout 1 is attached to the central portion of the upper edge of the container body 7 with the mouth portion 2 on the outside (outside of the container body 7) and the tip of the hem 3 sandwiched between the sheet materials 8a and 8b. It has been. The tip of the skirt 3 is joined to the sheet material 8a, 8b by a spout seal portion 9 in which the sheet material 8a, 8b and the skirt 3 are heat-sealed. Further, the outer edge portions of the sheet materials 8a and 8b including the right and left of the skirt portion 3 of the first reference spout 1 are heat-sealed continuously with the spout seal portion 9 to form the outer edge seal portion 10a. The overlapping portions of the outer edge portions of the sheet materials 8a and 8b and the sheet material 8c are heat-sealed to form the outer edge seal portion 10b. The sheet materials 8a, 8b, and 8c constitute a self-supporting bag-shaped container body 7 by the spout seal portion 9 and the outer edge seal portions 10a and 10b.

  As shown in an enlarged view in FIG. 4, the entire edge X on the skirt 3 side of the outer edge seal portion 10 a formed adjacent to the left and right of the skirt 3 is along the expanded shape of the skirt 3. Inclined inward (inward of the container body 7). Moreover, when the front-end edge Y of the skirt part 3 of the 1st reference spout 1 protrudes inside the container main body 7, it will become easy to dam the taking-out of the contents and to remain. For this reason, as shown in FIG. 4A, the leading edge Y of the skirt 3 is the inner edge of the outer edge seal portion 10a formed adjacent to the left and right of the skirt 3 (the inner edge of the container body 7). 4 coincides with the inner edge extension line Z extending in the opposite direction, or as shown in FIG. Furthermore, when the inner edge of the spout seal portion 9 (the inner edge of the container main body 7) protrudes to the inner side (the inner side of the container main body 7) of the tip edge Y of the skirt 3, the sheet material 8a, 8b is heat-sealed and communication between the skirt 3 and the container body 7 is likely to be hindered. For this reason, it is preferable that the inner edge of the spout seal portion 9 is slightly closer to the outer side (outer side of the container body 7) than the tip edge Y of the skirt portion 3.

  In the case of the first reference spout-equipped container 11 using the first reference spout 1, as described above, the bottom part 3 of the first reference spout 1 joined to the container body 7 gradually gradually toward the tip. It has a shape that is expanded in diameter. In addition, the entire edge X on the skirt 3 side of the outer edge seal portion 10 a formed adjacent to the right and left of the skirt 3 is inclined inward along the expanded shape of the skirt 3. For this reason, the container main body 7 can be inflated in the extending direction of the shape in which the diameter of the skirt portion 3 is increased, as indicated by a one-dot chain line in FIG. On the other hand, as shown in FIG. 5 (b), the skirt 2 is sandwiched between the sheet materials 8a and 8b even though the skirt 2 gradually increases in diameter from the mouth 2 side toward the tip. If the tip of the portion 3 has a cylindrical shape with a constant diameter, only the extension region of the cylindrical portion with the constant diameter can bulge. That is, in the case of the first reference spout-equipped container 11 using the first reference spout 1, the container body 7 can be swollen in a wide range, and the fluidity of the contents in the container body 7 is increased. Can be easily taken out from the first reference spout 1.

<Second reference spout and second reference spout container>
6 is a cross-sectional view showing an example of a second reference spout according to a reference example of the present invention, FIG. 7 is a cross-sectional view taken along line II in FIG. 6, and FIG. 8 is a second reference spout according to a reference example of the present invention. FIG. 9 is a perspective view of the second reference spout-equipped container shown in FIG. 8, FIG. 10 is an explanatory view of the operation of the second reference spout, and FIG. 11 is a diagram of the spout according to the present invention. It is sectional drawing which shows an example.

  As shown in FIG. 6, the second reference spout 101 is basically the same as the first reference spout 1 already described (see FIG. 1), and is connected to the mouth 2 and one end of the mouth 2. The mouth portion 2 is formed with a male screw 4 on the outer peripheral surface, and can be opened and closed by a cap 6 in which a female screw 5 for screwing the male screw 4 is cut. Similar to the first reference spout 1, the skirt 3 has a shape in which the diameter gradually increases from the mouth 2 side toward the tip, and has a step 12.

  In the second reference spout 101, at least the skirt 3 can be crushed elastically. As a constituent material of the second reference spout 101, the material described for the case where the first reference spout 1 (see FIG. 1) is given elastic flexibility to at least the skirt 3 is provided. The same material can be used. Also, the thickness of the hem 3 of the second reference spout is not uniform in the circumferential direction, and a thick portion 13 having a thickness greater than the thickness of other portions is formed at a position opposite to the radial direction. Yes.

  As shown in FIG. 7, the thick portion 13 in this example is formed by the inner peripheral shape of the hem portion 3 in the radial section being circular and the outer peripheral shape being elliptical. On the contrary, the thick part 13 can also be formed by making the inner peripheral shape in the radial cross section of the skirt part 3 elliptical and making the outer peripheral shape circular.

  As shown in FIGS. 8 and 9, the second reference spout-equipped container 111 using the second reference spout 101 is basically the first reference spout-equipped container described in FIG. 2 and FIG. 11, the preferable material and form of the container body 7 are the same as those of the first reference spouted container 11. Moreover, the attachment state of the second reference spout 101 to the container main body 7 is the same as the attachment state of the first reference spout 1 described with reference to FIG. 4, and the wide range of the container main body 7 can be expanded. Is the same as the first reference spout 1 described in FIG.

  By the way, when attaching the 2nd reference spout 101 to the container main body 7, when crushing with the sealing board 14 for heat-seal | fusing as shown in FIG. The sheet material 8a is sandwiched between the sheet materials 8a and 8b so that the thick portion 13 faces in the extending direction of the outer edge seal portion 10a adjacent to the left and right of the skirt portion 3. For this reason, since the thick portion 13 is positioned in the left-right direction with respect to the crushing direction (vertical direction) by the seal plate 14, that is, on both ends of the crushed hem portion 3, Resist both ends of the skirt 3 against each other. Thereby, when the skirt part 3 is crushed, the upper and lower inner surfaces of the hem part 3 are not strongly pressed against each other, and the upper and lower inner surfaces of the skirt part 3 are prevented from being firmly heat-sealed.

In the skirt 3 of the second reference spout 101, the thickness of the radial cross section passing through the thick portion 13 satisfies the following conditional expressions (1) and (2) in order to effectively obtain the above action. Is preferred. However, t ₁ is the maximum thickness of the cross section, t ₂ is the minimum thickness in the cross section.

t ₁ = t ₂ × f (1)
1.0 <f ≦ 3.5 (2)
As described above, the thick portion 13 in the second reference spout 101 is formed by making one of the outer peripheral shape and the inner peripheral shape in the radial cross section of the skirt portion 3 elliptical and the other circular. As shown in FIG. 11, the thick portion 13 of the spout according to the invention is formed by providing a bulging portion at a position opposite to the radial direction of the inner surface of the skirt portion 3. Further, the thick portion 13 may be formed over the entire length in the length direction of the skirt portion 3, but if it is formed at least at the tip portion that is sandwiched between the sheet materials 8 a and 8 b and heat-sealed. Enough.

It is sectional drawing which shows an example of the 1st reference spout which concerns on the reference example of this invention. It is a top view which shows an example of the 1st container with a reference spout which concerns on the reference example of this invention. It is a perspective view of the container with the 1st reference spout shown by FIG. It is an enlarged plan view which shows the attachment state to the container main body of the 1st reference spout. It is explanatory drawing of an effect | action of a 1st reference spout and a container with a 1st reference spout. It is sectional drawing which shows an example of the 2nd reference spout which concerns on the reference example of this invention. It is II sectional drawing in FIG. It is a top view which shows an example of the 2nd container with a reference spout which concerns on the reference example of this invention. It is a perspective view of the 2nd container with a reference spout shown by FIG. It is explanatory drawing of an effect | action of a 2nd reference spout. It is sectional drawing which shows an example of the spout which concerns on this invention.

DESCRIPTION OF SYMBOLS 1 1st reference spout 2 Mouth part 3 Bottom part 4 Male screw 5 Female screw 6 Cap 7 Container body 8a, 8b Sheet material 9 Spout seal part 10a, 10b Outer edge seal part 11 First reference spout container 12 Step 13 Thick part 14 Seal plate X End edge Y Front edge Z Inner edge extension line 101 Second reference spout 111 Second reference spout-equipped bag

Claims (6)

  A cylindrical mouth part, and a tubular hem part that is connected to one end of the mouth part, and at least a tip part is sandwiched between sheet materials constituting the bag-like container body and is heat-sealed, The skirt part can be elastically crushed, and the entire part gradually increases in diameter from the mouth side toward the tip, and a part of the opposed inner peripheral surface of the skirt part is inward. A spout characterized in that a thick portion having a thickness larger than that of other portions is formed at opposite positions by swelling.   The spout according to claim 1, wherein a diameter of an end portion of the hem portion on the mouth portion side is larger than a diameter of an end portion of the hem portion on the skirt portion side, and a step is formed therebetween.   The spout seal part in which the hem part of the spout according to claim 1 or 2 is sandwiched between the outer edge parts of the stacked sheet materials with the mouth part being the outside, and the sheet material and the hem part are heat-sealed. The sheet material constitutes a bag-shaped container main body, and the outer edge seal part in which the outer edge parts of the sheet material including the right and left of the skirt part are heat-sealed continuously with the spout seal part. Spouts are attached to the main body, and the entire edge on the hem side of the outer edge seal part formed adjacent to the left and right of the hem part is inward along the expanded diameter of the hem part. On the other hand, the spout-equipped container is characterized in that, while being inclined, the thick part of the skirt is positioned in the left-right direction.   The leading edge of the skirt matches the inner edge extension line that extends in the opposite direction from the inner edge of the outer edge seal portion formed adjacent to the right and left of the skirt, or enters outside the inner edge extension line. The spouted container according to claim 3, wherein   The container with a spout according to claim 3 or 4, wherein the container body is a self-supporting bag.   The container with spout according to any one of claims 3 to 5, wherein the container body is a standing pouch.

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