JP5310229B2 - Funnel part, funnel part manufacturing method, packaging container and package using funnel part - Google Patents

Description

  The present invention relates to a funnel part used in a packaging container for packaging powdery or liquid materials and transferring the contents to another container, a method for manufacturing the funnel part, a packaging container using the funnel part, and a package It is.

  In general, powdered food products such as instant coffee are sold in a state of being filled in a highly sealed packaging container such as a bottle with a cap so that the hermeticity during storage can be maintained. There is also known a refill package in which the contents are simply packaged for the purpose of refilling the contents and reusing the storage container. As packaging containers for such refill packages, for example, pouches, gusset bags, and cup-shaped containers are used.

  Patent Documents 1 to 3 describe a configuration in which a resin-made reinforcing ring is attached to an opening of a cup container in order to reinforce a lightweight and easily disposable paper cup container.

Japanese Examined Patent Publication No. 63-24464 JP-A-8-58764 JP 2002-264918 A Japanese Patent No. 2895556 JP 2009-7072 A

  Refilling the contents from a conventional refill package such as a pouch into the storage container, for example, by opening the opening of the refill package opened to the opening of the storage container and gradually moving the contents into the storage container. Do by pouring. However, at the time of this refilling work, the contents may spill out and stain the hands and surroundings, so it cannot be said that it is convenient.

  Therefore, the present invention uses a funnel part used for a packaging container and its manufacturing method, and further funnel part, which can easily refill the contents into another container without spilling the contents during the refilling operation. The purpose is to provide a packaging container and a package.

  The present invention also relates to a funnel part that is fitted into a cylindrical container body having an open end, a bottom portion, and a side wall, and constitutes a packaging container for transferring contents to a storage container. This funnel part includes a funnel having a diameter that narrows from the wide-mouth side toward the narrow-mouth side, and a side wall that surrounds the outer surface of the funnel and is connected to the funnel and fitted into the container body. A plurality of rectangular openings are provided intermittently in the circumferential direction on the side wall. The corner of the opening located on the narrow mouth side has a shape with a rounded corner.

  Further, the present invention is formed by injection molding using a mold, which is fitted into a cylindrical container body having an open end, a bottom part, and a side wall, constitutes a packaging container for transferring contents to a storage container. This is related to the funnel parts. This funnel part has a funnel whose diameter narrows from the wide mouth side toward the narrow mouth side, a cylindrical shape surrounding the outer surface of the funnel, and a plurality of rectangular openings formed at equal intervals in the circumferential direction of the funnel, A side wall including the same number of pillars as the openings and a side wall including a portion sandwiched between a pair of openings adjacent in the circumferential direction, and the same number of ribs as the pillars connecting each of the pillars and the outer surface of the funnel.

  Furthermore, the present invention relates to a funnel part that is fitted into a cylindrical container body having an open end, a bottom portion, and a side wall, and constitutes a packaging container for transferring contents to a storage container. This funnel part extends radially from the center of the funnel with the diameter narrowing from the wide mouth side toward the narrow mouth side, and the opening on the narrow mouth side of the funnel. And a plurality of ribs that bridge the part.

  Furthermore, the present invention relates to a funnel part that is fitted into a cylindrical container body having an open end, a bottom portion, and a side wall, and constitutes a packaging container for transferring contents to a storage container. The funnel part includes a funnel whose diameter narrows from the wide-mouth side toward the narrow-mouth side, a side wall connected to the funnel, and a plurality of ribs that connect the outer surface of the funnel and the inner surface of the side wall or the inner surface of the container body. . The funnel includes a guide portion whose outer diameter monotonously narrows toward the narrow mouth side from a plane including the narrow mouth end portion of the rib, and whose longitudinal cross-sectional shape of the outer surface is arcuate. Provide funnel parts.

  By using the funnel parts of the present invention, it is possible to refill the contents in a state in which the opening of the funnel housed in the container body is inserted into another container, without spilling the contents to the outside, A packaging container and a package that can be refilled are realized.

The perspective view which shows schematic structure of the package which concerns on this invention 1 is an exploded perspective view of the package shown in FIG. Sectional view of the III-III line shown in FIG. Plan view of the membrane shown in FIG. Sectional drawing of the VV line shown by FIG. The perspective view which shows the use condition of the package which concerns on this invention Sectional drawing of the VII-VII line shown by FIG. The perspective view of the funnel part which concerns on embodiment of this invention Front view of the funnel part shown in FIG. Sectional view of the A ₂ -A ₂ 'line shown in FIG. 8 The perspective view which shows the state which attached the funnel part shown by FIG. 8 to the container main body. The perspective view of the package which concerns on embodiment of this invention Sectional view of the B ₂ -B ₂ 'line shown in FIG. 13 The top view which shows another example of the rib provided in the opening inside the narrow mouth side of a funnel Sectional drawing which shows the use condition of the package shown by FIG. Schematic diagram showing the process of attaching the funnel parts according to the comparative example to the container body The schematic diagram which shows the process of attaching the funnel part which concerns on embodiment of this invention to a container main body. The top view which shows the relationship between the funnel part which concerns on embodiment of this invention, and the gate arrangement | positioning at the time of injection molding The front view which shows the other example of the side wall shape of the funnel part which concerns on this invention Sectional drawing which shows the other example of the opening part shape of the narrow mouth side of the funnel part which concerns on this invention

(Basic configuration)
First, a basic configuration of a package according to the present invention will be described with reference to FIGS.

  FIG. 1 is a perspective view showing a schematic configuration of a package according to the present invention, and FIG. 2 is an exploded perspective view of the package shown in FIG. FIG. 3 is a cross-sectional view taken along line III-III shown in FIG.

  The package 1 is used as a refill package for packaging powdery or liquid materials and refilling the contents into other storage containers. The packaging container 2 and the inside of the packaging container 2 are filled. And a membrane 3 for sealing the open end 11 of the packaging container 2. Furthermore, an overcap 4 formed of high density polyethylene (HDPE), polypropylene (PP) or the like is attached to the packaging container 2 in order to protect the membrane 3. The content 5 is not particularly limited as long as it has fluidity, and the packaging container 2 according to the present invention can be applied to various materials such as powder, granule, and liquid.

  The packaging container 2 includes a cylindrical container body 10 with one end opened, and a funnel part 8 including a funnel 20 housed inside the container body 10.

  The container body 10 has a side wall 17, a bottom portion 16, and an open end 11. In this embodiment, the container main body 10 is formed in a cylindrical shape by rounding rectangular sheet materials, partially overlapping them, and bonding the overlapping portions. The bottom portion 18 of the container body 10 includes a circular bottom plate 19 and a folded portion 18 that sandwiches and holds the outer peripheral portion of the bottom plate 19. On the other hand, a curling 12 is formed at the open end 11 of the container body 10 by bending a part of the side wall 17 outward and winding it in an annular shape.

  The material for forming the container body 10 is not particularly limited, but it is preferable to use a material mainly made of paper in consideration of weight reduction of the container, ease of disposal, and resource saving. As an example, in food packaging applications, a low-density polyethylene (LDPE), polyethylene terephthalate (PET), aluminum foil, and paper are laminated in order from the side that is the inner surface of the container body 10, and high gas barrier properties (particularly, A sheet material having a property of blocking volatile components derived from contents such as oxygen, water vapor, and aromatic components can be used.

  The funnel part 8 refers to a part composed of a funnel having a portion whose diameter decreases toward one end and a member integrated with the funnel. The funnel part 8 illustrated in FIGS. 1 to 3 includes a funnel 20 and a cylindrical side wall 22 connected to the wide mouth portion of the funnel part 8, and is inserted into the container body 10 from the open end 11 and accommodated therein. The container 10 is fitted. As will be described later, the funnel 20 is provided for facilitating refilling of the contents 5 into another container, and is arranged so that the diameter decreases toward the open end 11. The taper angle α of the funnel 20 is appropriately set according to the fluidity of the contents, but when the contents are powder, it is set to at least 20 to 45 °, more preferably 20 °.

  The funnel part 8 may be integrally formed of a resin material such as HDPE or PP, for example, or may be configured by connecting a funnel 20 and a side wall 22 separately formed using paper, resin, paper mixed resin, or the like. May be. When resin or paper mixed resin is used, the funnel part 8 may be formed by, for example, injection molding. The shape and attachment method of the funnel 20 and the funnel part 8 are not limited to the examples of FIGS.

  4 is a plan view of the membrane shown in FIG. 2, and FIG. 5 is a cross-sectional view taken along line VV shown in FIG.

  The membrane 3 is used to seal the open end 11 of the packaging container 2 after the packaging container 2 is filled with the material. Depending on the use of the packaging container 2, the sheet material is formed of a single layer. Or the sheet material which laminated | stacked several layers can be utilized. When the content of the packaging container 2 is food or the like, it is preferable to form the membrane 3 with a material having gas barrier properties.

  Specifically, as shown in FIG. 5, the membrane 3 is made of resin through a sealant layer 31 sealed in the packaging container 2, a resin layer 32 laminated on the sealant layer 31, and an adhesive layer 33. And a metal foil layer 34 laminated on the layer 32. As an example, the sealant layer 31 may be formed of polyethylene, the resin layer 32 may be formed of polyethylene terephthalate (PET), and the metal foil layer 34 may be formed of aluminum. The number of layers and the stacking method of the layers constituting the membrane 3 are not particularly limited and may be arbitrary.

  The membrane 3 is formed with six cutting lines 30 extending radially from the center so as to be broken when the tension exceeds a predetermined magnitude due to external pressure. 4 and 5, the cutting line 30 cuts only the sealant layer 31 and the resin layer 32 in the thickness direction of the membrane 3, and draws a broken line in the extending direction of the membrane 3. Is formed.

  The cutting line 30 is for adjusting the breaking strength of the membrane 3, and according to the pressing force applied to the membrane 3, the number, the line shape, the length and depth of the cutting part can be arbitrarily set. it can. As an ideal number of the cutting lines 30, it is desirable to provide 3 to 10 radial lines from the center. The cutting line 30 may be linear or curved. Moreover, in the extending | stretching direction of the membrane 3, the cutting line 30 does not necessarily need to be a broken line perforation, and you may form it so that a continuous line may be drawn.

  6 is a perspective view showing a usage state of the package according to the present invention, and FIG. 7 is a cross-sectional view taken along the line VII-VII shown in FIG. More specifically, in FIGS. 6 and 7, (a) shows a state before the membrane is ruptured, and (b) shows a state after the membrane is ruptured.

  When refilling the contents 5 in the package 1 into another container 7, first, as shown in FIGS. 6 (a) and 7 (a), the packaging container 2 with the overcap removed is inverted, and the membrane 3 is brought into contact with the opening of the storage container 7. At this time, since the opening on the narrow mouth side of the funnel 20 is disposed within the range of the opening of the storage container 7, the center of the packaging container 2 is aligned with the center of the storage container 7.

  Next, the bottom of the package 1 is pushed in the direction of the arrow in the figure. At this time, the membrane 3 receives a pressing force from the opening of the funnel 20 and the container 7 as the packaging container 2 is pressed. When the tension of the membrane 3 exceeds a predetermined breaking strength, FIG. As shown in FIG. 7 (b), the membrane 3 is broken. When the membrane 3 is broken, the funnel 20 is inserted into the container 7 according to the pressing force applied to the packaging container 2, and the broken membrane 3 is folded into a space sandwiched between the funnel 20 and the side wall 22. . As a result, the opening on the outer side of the funnel 20 is greatly opened, so that the content 5 flows into the container 7 along the taper of the funnel 20 according to gravity.

  As described above, according to the packaging container 2 and the package 1 using the same according to the present invention, the membrane 3 and the opening of the container 7 are brought into contact with each other, and the packaging container 2 is pressed toward the storage container 7. Accordingly, the opening of the funnel 20 is inserted into the storage container 7 almost simultaneously with the breakage of the membrane 3. Since the contents 5 in the packaging container 2 are guided into the storage container 7 by the funnel 20, it is possible to prevent the contents 5 from being scattered or spilled during the refilling operation. Therefore, according to the packaging container 2 and the package 1 which concern on this embodiment, it becomes possible to refill the contents easily.

  Hereinafter, a funnel part according to an embodiment of the present invention, a packaging container and package using the funnel part, and a manufacturing method will be described. In the drawings described below, an overcap for protecting the membrane is not shown.

(Embodiment)
8 is a perspective view of the funnel part according to the present embodiment, FIG. 9 is a front view of the funnel part shown in FIG. 8, and FIG. 10 is an A ₂ -A ₂ ′ line shown in FIG. FIG. 11 is a perspective view showing a state in which the funnel part shown in FIG. 8 is attached to the container main body.

  The funnel part 201 includes a funnel 220 for guiding contents to a storage container, a rib 228 provided in the opening 222 of the funnel 220, a cylindrical side wall 230 connected to the container body, and a funnel part 201. And six ribs 240 that reinforce and restrict the insertion amount of the storage container.

  The funnel 220 includes an opening 221 on the wide-mouth side and an opening 222 on the narrow-mouth side, and has a shape whose diameter narrows from the opening 221 to the opening 222. More specifically, the funnel 220 includes, in order from the wide-mouthed side, a tapered portion 223 whose diameter is narrowed at a constant rate, a first straight portion 224, a guide portion 225 having a shape whose diameter is monotonously narrowed, and a second A straight portion 226. In this specification, the arc shape means a curved shape obtained by combining arcs or elliptical arcs or arcs or elliptical arcs having different curvatures. Further, the outer surface of the funnel 220 is provided with a protrusion 227 that is flush with the end surface 241 of the rib 240 and protrudes outward from the outer surface of the funnel 220.

  The guiding portion 225 is for guiding the funnel 220 to the center of the opening of the storage container when the package using the funnel part 201 is used (FIGS. 6 and 7). Further, the protrusion 227 is provided to supplementarily close the gap between the opening of the storage container and the funnel 220 when the package using the funnel part 201 is used (FIGS. 6 and 7).

  The ribs 228 extend radially from the center of the opening 222 on the narrow mouth side, and are formed so as to bridge each part of the inner surface of the opening 222. The ribs 228 are evenly arranged around the central axis of the opening 222, and the central angle formed by the pair of adjacent ribs 228 and the central axis of the opening 222 is constant. In addition, the size and position of the rib 228 are set so that the end face on the narrow mouth side of the rib 228 is located on the wide mouth side from the plane including the end face of the opening 222 of the funnel 220. This is because when the package is formed with the funnel part 201, the rib 228 is prevented from overlapping with the cutting line provided on the membrane so that the membrane does not break even when an unexpected pressing force is applied to the open end portion of the container body. Is taken into consideration.

  In the opening 222 of the funnel 220, a plurality of lateral ribs 229 that connect adjacent ribs 228 and suppress the deflection of the ribs 228 are further provided. In the present embodiment, the lateral rib 229 forms a circle concentric with the opening 222. As shown in FIG. 10, the end surface on the narrow mouth side of the lateral rib 229 and the end surface on the narrow mouth side of a part of each rib 228 surrounded by the lateral rib 229 constitute the same plane. In the present embodiment, the end surface on the narrow mouth side of the lateral rib 229 is also positioned on the wide mouth side from the end portion on the narrow mouth side of the opening 222 of the funnel 220.

  The side wall 230 has a cylindrical shape surrounding the funnel 220, and six rectangular openings 231 are formed at equal intervals in the circumferential direction. By forming a plurality of openings 231, a strip-shaped attachment portion 233 including a column portion 232 sandwiched between a pair of adjacent openings 231 and an end surface on the narrow mouth side of the funnel 220 connected to the column portion 232 is formed on the side wall 230. Is configured.

  A corner 234 of the opening 231 located on the narrow mouth side of the funnel 220 is formed in an arc shape. The corners 234 are formed in an arc shape in this way to facilitate the assembly of the packaging container, details of which will be described later.

  The ribs 240 are connected to the outer surface of the funnel 220 and the inner surface of the column portion 232 of the side wall 230, and are arranged at equal intervals in the circumferential direction. The end surface 241 on the narrow mouth side of the rib 240 is located on the wide mouth side (that is, the inner side) from the plane including the opening 222. The amount of the storage container inserted into the package is defined by the distance from the plane including the opening 222 in the central axis direction of the funnel 220 to the end surface 241.

  The funnel part 201 having the above-described configuration can be integrally formed by injection molding. When manufacturing by injection molding, the resin injection speed and the degree of shrinkage during cooling can be made constant by adopting a structure in which the set of ribs 240 and column portions 232 of the side wall 230 are evenly arranged in the circumferential direction of the funnel 220. . If the degree of contraction of each rib 240 is different, the shape of the opening on the narrow mouth side of the funnel 220 is greatly deviated from the perfect circle. However, the structure that affects the funnel shape at the time of molding (the rib 240 and the column portion 232) is an equivalent structure. By arranging them evenly, it is possible to make the shape of the funnel part 201 close to a perfect circle when viewed from the central axis direction of the funnel 220. In this case, it is preferable to further consider the gate arrangement provided in the injection mold, which will be described later.

12 is a perspective view of a package according to an embodiment of the present invention, and FIG. 13 is a cross-sectional view taken along line B ₂ -B ₂ ′ shown in FIG.

  The package 211 is obtained by filling the container body 250 to which the funnel part 201 is attached with the contents 260 and sealing the open end of the container body 250 with the membrane 270. The usage method as described above (FIGS. 6 and 7). Therefore, the membrane 270 is formed with a cutting line 271 for adjusting the breaking strength.

  When the package 211 falls and the side surface of the package 211 collides with the ground, a pressing force toward the inside of the package 211 is applied to the side surface of the package 211. When the pressing force deforms the open end portion of the container body 250 and a predetermined tension or more is applied in the direction intersecting the cutting line 271, the membrane 270 may be broken.

  In the funnel part 201 according to the present embodiment, since the bending is suppressed in the rib 228 described above, the lateral rib 229 connecting the rib 228, and the rib 240 connecting the side wall 230 and the funnel 220, the funnel part 201 is attached. The strength of the open end portion of the container body 250 can be improved and deformation can be suppressed. Therefore, unexpected breakage of the membrane 270 accompanying deformation of the container body 250 can be prevented.

  Further, the plane including the end surface of the rib 228 and the end surface of the lateral rib 229 located on the narrow mouth side is located on the wider mouth side than the plane including the opening 222 on the narrow mouth side, so the membrane 270 is the rib 228 or the lateral rib 229. It is possible to prevent the membrane 270 from being directly damaged by the collision.

  8 to 13 show an example in which the lateral rib 229 for preventing the rib 228 from bending is provided inside the opening 222, the configuration shown in FIG. 14 may be adopted.

  FIG. 14 is a plan view showing another example of the rib 228 provided inside the opening on the narrow mouth side of the funnel.

  In the example of FIG. 14, only a plurality of ribs 228 extending radially from the center of the opening 222 are provided inside the opening of the funnel 220 on the narrow mouth side. When a pressing force is applied to the funnel 220 in the direction of the arrow in the figure, the central portion of the rib 228 that receives this pressing force is easily bent. However, when the diameter of the opening 222 on the narrow opening side is relatively small, the bending of the rib 228 is also small, so that the reinforcing effect of the opening 222 on the narrow opening side can be sufficiently exhibited. Therefore, even when the funnel part 201 including the rib 228 shown in FIG. 14 is used, deformation of the open end portion of the container body can be suppressed, and the membrane can be prevented from being broken.

  FIG. 15 is a cross-sectional view showing a usage state of the package shown in FIG. More specifically, FIG. 15A is a cross-sectional view showing a state in the middle of insertion of the storage container opening into the package, and FIG. 15B shows a state in which insertion of the storage container opening into the package is completed. It is sectional drawing.

  When the package 211 according to the present invention is used (FIGS. 6 and 7), the central axis of the package 211 and the central axis of the storage container 280 may not completely coincide. Even in such a case, the guiding part 225 is provided in the funnel 220 in order to guide the package 211 to a state in which the central axes of the two coincide.

  For example, when the central axis of the package 211 is eccentric in the horizontal direction from the central axis of the storage container 280, when the opening 281 of the storage container 280 breaks the membrane 270 and is inserted into the package 211, FIG. As shown in FIG. 15 (a), the opening 281 comes into contact with the outer surface of the guiding part 225 of the funnel 220.

  In this state, when the package 211 is further pushed in the direction of the arrow in the figure, the guide portion 225 that contacts the opening 281 smoothly moves on the opening 281 so that the central axis of the package 211 is set to the center of the storage container 280. Induce. As a result, as shown in FIG. 15 (b), the narrow side portion of the funnel 220 is inserted into the opening of the storage container 280, the axes of the package 211 and the storage container 280 are aligned, and the opening 281. Is in contact with the plane formed by the end surface 241 and the protruding portion 227 of the rib 240. By providing such a guide portion 225, the funnel 220 can be positioned and inserted easily and quickly.

  In the state shown in FIG. 15B, the gap between the outer surface of the funnel 220 and the opening 281 of the storage container 280 is closed by the end surface of the protruding portion 227. When this gap is not closed, the contents (particularly powder contents) may be scattered through the gap together with the air pushed out as the contents 260 flows into the storage container 280. In this embodiment, scattering of the contents 260 can be suppressed by closing the gap.

  Further, even when the inner diameter dimension of the opening 281 has some variation, the funnel 220 includes the first straight portion 224, so that the inner surface of the opening 281 is any of the regions of the first straight portion 224. By contacting that portion, the gap in the connection portion between the storage container 280 and the package 211 can be filled.

  The broken membrane 270 is folded in half by the opening 281 and pushed into a space sandwiched between the funnel 220 and the side wall 230. This pushing amount is determined by the distance D from the end surface 241 of the rib 240 to the plane including the opening 222 in the central axis direction of the funnel 220.

  When the diameter of the opening 222 is W, the dimension D is ¼ W or more to completely open the opening 222 by pushing the membrane 270 broken at the center of the opening into the package 211 in a folded state. It is necessary to be.

  The upper limit of the value of dimension D is not particularly limited, but if the value of dimension D is ½ W, the entire broken membrane 270 can be pushed into the package 211. When the value of the dimension D exceeds 1/2 W, the insertion amount of the funnel 220 becomes large, and thus the design of the funnel part 201 is restricted. However, the value of D may be determined according to the shape and application of the package 211. .

  FIG. 16 is a schematic diagram illustrating a process of attaching the funnel part according to the comparative example to the container body, and FIG. 17 is a schematic diagram illustrating a process of attaching the funnel part according to the embodiment of the present invention to the container body. More specifically, FIGS. 16 and 17 (a) are front views of the process of attaching each funnel part to the container body, and (b) is a top view of the container body and the funnel part shown in (a). (C) is a top view showing a state in which the funnel part is fitted into the container body.

  In order to facilitate positioning of the funnel part 201 with respect to the container body 250 and to ensure the attachment state, the outer diameter of the side wall 230 of the funnel part 201 is set slightly larger than the inner diameter of the container body 250. Further, when curling is formed at the open end of the container main body 250, the inner diameter on the open end side of the container main body 250 tends to be smaller than the inner diameter of other portions. Therefore, when the funnel part 201 is inserted into the container main body 250, the column portion 232 is pushed toward the funnel 220 side by the side surface near the open end of the container main body 250.

  Here, in the funnel part according to the comparative example of FIG. 16, the corners 234 of the opening provided on the side wall are formed at right angles. As shown in FIG. 16A, when the funnel part is inserted until the corner 234 reaches the vicinity of the open end of the container body 250, the column portion 232 is pushed into the funnel 220 side. At this time, since the strength in the vicinity of the corner 234 is weak, as shown in FIG. 16B, the attachment portion 233 located between the adjacent column portions 232 bulges outward in the radial direction, and the central axis of the funnel part 201 Deforms to a hexagonal shape when viewed from the direction.

  The attachment portion 233 bulges outward most at the central portion of the adjacent column portion 232 and protrudes outward from the open end of the container body 250 when viewed from above. Becomes a hindrance when inserting into the container body 250.

  In addition, even after the funnel parts are completely inserted into the container body 250, the attachment portion 233 is easily deformed at the corner 234, and a part of the attachment portion 233 approaches the funnel 220 side as shown in FIG. Curve to get out.

  In the state of FIG. 16 (c), it becomes difficult to insert a device or jig for joining the funnel part to the container body 250 between the funnel 222 and the attachment portion 233. Even if it cannot join or it joins temporarily, it will become the cause of joining failure.

  On the other hand, the corner 234 of the funnel part 201 according to the present embodiment shown in FIG. 17 is formed in an arc shape, and the strength of the corner 234 is higher than that of a right angle.

  Therefore, even when the funnel part 201 is inserted into the container main body 250 until the corner 234 is positioned near the open end of the container main body 250, the funnel part 201 is a perfect circle when viewed from the center axis direction as shown in FIG. The shape close to is maintained.

  Therefore, when inserting the funnel part 201 into the container main body 250, the side wall 230 can be smoothly inserted without being caught, and the side wall 230 of the funnel part 201 is inserted into the container main body 250 as shown in FIG. Will be in a state along.

  FIG. 18 is a plan view showing the relationship between the funnel part according to the embodiment of the present invention and the gate arrangement at the time of injection molding.

  In the funnel part 201 according to this embodiment, six column parts 232 are provided at equal intervals in the circumferential direction, and six ribs 240 that connect the inside of the column part 232 and the outer wall of the funnel 220 are arranged. As described above, the funnel part 201 has a shape close to a perfect circle when viewed from the central axis direction by providing the column 232 and the rib 240 equally in the rotational direction. At the time of injection molding of the funnel part 201, the three gates 290 are to be rotated with respect to the funnel 220 central axis, and are disposed between the pair of adjacent pillars 232 to perform injection molding, thereby further improving the roundness. Improvement has been realized.

  At this time, if the number of the gates 290 is the same as or half of the number of the ribs 240 and the column parts 232, the gates 290 can be evenly arranged in the circumferential direction with respect to the ribs 240 and the column parts 232.

  The mold for forming such a funnel part 201 includes a funnel 220 constituting the funnel part 201, side walls 230, respective cavities corresponding to the ribs 240, and three-point gates 290.

  The cavities corresponding to the ribs 240 and the pillars 232 are arranged at equal intervals in the circumferential direction of the funnel 220. The gates 290 are provided at the cavity end surfaces corresponding to the back side surface of the funnel 220 at equal intervals in the circumferential direction and at intermediate positions of the cavities corresponding to the pair of adjacent ribs 240 and the pillars 232. By disposing the gate 290 in this way, it is possible to uniformly fill the cavities corresponding to the ribs 240 and the column portions 232 during injection molding.

  The mold may be normally used in injection molding. For example, any mold can be suitably used as long as it is configured by incorporating a cavity formed of alloy tool steel into a matrix formed of carbon steel.

  When the mold according to the present embodiment is used, the resin filled from each gate 290 is spread over all the cavities corresponding to the funnel part, the side wall part, and the rib part, and the funnel part 201 can be integrally injection-molded. . The resin filled from the gate 290 comes into contact with the end face of the cavity and flows to the filling end portion while taking heat away. For this reason, in the resin filling process, a loss of resin filling pressure and a decrease in resin temperature occur. Therefore, the resin temperature and the resin pressure differ depending on the distance that the resin flows from the gate. Specifically, the resin at the filling end is lower in both temperature and pressure than the resin near the gate.

  In the mold according to this embodiment, the resin temperature and the resin pressure filled between the cavities are made uniform by disposing cavities corresponding to the ribs 240 and the pillars 232 at points where the resin flow distance from the gate 290 is equal. Can be approached. Thereby, since each rib 240 and the column part 232 contract similarly, it becomes possible to manufacture the funnel part 201 having a shape closer to a perfect circle.

  In the above example, the side wall of the funnel part is formed in a cylindrical shape and the opening on the narrow mouth side is formed in a straight shape, but the side wall of the funnel part and the opening on the narrow mouth side are as follows. You may form as follows.

  FIG. 19 is a view showing another example of the side wall shape of the funnel part according to the embodiment of the present invention.

  The side wall 230 of the funnel part 201 according to the present embodiment has a cylindrical shape that surrounds the funnel 220. However, as shown in FIG. A continuous side wall 230 may be formed. Further, as shown in FIG. 19B, the side wall 230 may be formed so as to extend to the side opposite to the opening 222 on the narrow mouth side of the funnel 220. Also in the case of FIG. 19B, a plurality of slits as shown in FIG. 19A may be provided to form a discontinuous shape in the circumferential direction. 19B, the outer end of the rib connected to the outer surface of the funnel 220 may be in contact with or connected to the inner surface of the container body.

  FIG. 20 is a diagram illustrating another example of the shape of the opening on the narrow mouth side of the funnel according to the embodiment of the present invention.

  As shown in FIG. 20 (a), the opening 222 on the narrow mouth side of the funnel 220 may be provided with a bent portion 245 whose end portion is bent outward. Further, the bent portion 245 may be formed by bending the edge portion inward. At this time, the angle β formed between the outer surface of the bent portion 245 and the outer surface of the straight portion 226 can be arbitrarily set. When β is 0 to 90 degrees, it is folded outward. When β is 90 to 180 degrees, it is folded outward and spreads outward. When β is 180 to 270 degrees, it is folded inward and outward. When β is 270 to 360 degrees, it has a shape that is folded inward. Further, when β is 90 degrees, it bends to the outside at a right angle as shown in FIG. 20A, and when β is 270 degrees, it bends to the inside at a right angle. Furthermore, as shown in FIG. 20B, a curling portion 246 that is wound outward may be provided. Also in this case, the curling portion 246 may have a shape that is wound inside. By forming the opening 222 on the narrow mouth side in such a shape, the area where the opening 222 abuts on the membrane increases when used as a package, and the contents are prevented from leaking outside the funnel 220. The effect to do becomes high. Furthermore, the effect of making it difficult for unintended membrane breakage due to impact during transportation or the like is exhibited.

  In the above embodiment, the funnel having the tapered portion, the first and second straight portions, and the guiding portion is configured, but the shape of the funnel is from the wide mouth side to the narrow mouth side. There is no particular limitation as long as it can guide an object. For example, you may comprise the funnel which provided the straight part further in the middle of the taper part without providing a straight part, and the funnel which consists only of a taper part and a guidance | induction part. Further, the protruding portion on the outer surface of the funnel is arbitrary and is not necessarily provided.

  Moreover, in said embodiment, the rib provided in the narrow side funnel should just be a shape which suppresses a deformation | transformation of the narrow side funnel and does not prevent the passage of the contents extremely. The cross-sectional shape of the rib is not particularly limited, and any cross-sectional shape such as a rectangular shape or a circular shape can be adopted. Moreover, you may form so that a curve may be drawn from the center of the opening part by the side of a narrow mouth. The number of ribs may be two or more. Moreover, although it is preferable to provide a rib equally in the circumferential direction, it is not uniform and you may provide so that an adjacent rib may form a different center angle.

  The horizontal rib that connects the ribs does not have to be circular, and may be a polygon that connects adjacent ribs with a linear horizontal rib, for example. Moreover, the end surface located in the funnel narrow side of a horizontal rib does not need to be on the same plane.

  Furthermore, in said embodiment, the opening provided in a side wall may be extended to the edge of the side wall located in the funnel wide mouth side, a side wall lower part may be abbreviate | omitted, and it is arbitrary if the number of openings is also plural. Further, the openings do not have to be formed at equal intervals in the circumferential direction, but in this case, care must be taken that the roundness viewed from the central axis direction of the injection-molded funnel part is reduced. The corners of the openings do not have to be arc-shaped, and for example, corners may be taken on a plane (C plane), or all four corners of the openings may be taken.

  Furthermore, in said embodiment, if the rib connected between a side wall and a funnel is provided with two or more, the number will be arbitrary. In addition, it is not necessary to provide them at equal intervals in the circumferential direction, but in this case, care must be taken that the roundness viewed from the central axis direction of the injection-molded funnel part is reduced.

  The distance between the end face of the rib and the plane including the opening on the narrow mouth side is not necessarily 1/4 or more and 1/2 or less of the diameter of the opening on the narrow mouth side. The membrane 270 is broken and the contents 260 can be refilled into a storage container, and the membrane 270 is not particularly limited as long as it is appropriately selected according to the type of the contents 260 filled in the package 211.

  Furthermore, in the above-described embodiment, the number of ribs and column portions does not need to be six, and if a plurality of ribs and column portions are arranged at equal intervals in the funnel circumferential direction, injection molding with good roundness is possible. Goods are obtained.

  In addition, as a mold used to increase the roundness of funnel parts by injection molding, a plurality of cavities corresponding to ribs and pillars are arranged at equal intervals in the funnel circumferential direction, and the gate is arranged in the circumferential direction, etc. The number of cavities and gates is arbitrary as long as it is provided on the cavity end face corresponding to the back surface of the funnel in the middle of the gap and the cavity corresponding to the pair of adjacent ribs and pillars. For example, the same number of gates as the number of columns and ribs may be provided.

  The present invention relates to a funnel part for transferring a powdery, granular, or liquid material such as freeze-dried coffee or powdered milk, toner for copying machines or laser printers to a storage container, and the like. It can be used for the used packaging container and package.

DESCRIPTION OF SYMBOLS 1 Package 2 Packaging container 3 Membrane 5 Powder 7 Container 8 Funnel part 10 Container body 11 Open end 17 Side wall 20 Funnel 201 Funnel part 210 Packaging container 211 Package 220 Funnel 221, 222 Opening part 223 Taper part 224 First straight part 225 Guide portion 226 Second straight portion 227 Protruding portion 228 Rib 229 Horizontal rib 230 Side wall 231 Opening 232 Column portion 233 Mounting portion 234 Corner 240 Rib 241 Rib end surface 245 Bending portion 246 Curling portion 250 Container body 260 Contents 270 Membrane 280 Storage container 281 Opening 290 Gate position

Claims (25)

A funnel part that is fitted into a cylindrical container body having an open end, a bottom, and a side wall, and constitutes a packaging container for transferring contents to a storage container,
A funnel whose diameter narrows from the wide mouth side toward the narrow mouth side,
A cylindrical side wall surrounding the outer surface of the funnel, connected to the funnel, and fitted into the container body;
A plurality of rectangular openings are intermittently provided in the circumferential direction on the side wall,
The corner of the opening located on the narrow mouth side is a funnel part having a cornered shape.   The funnel part according to claim 1, wherein a corner of the opening located on the narrow mouth side is formed in an arc shape.   The funnel part according to claim 1 or 2, wherein the plurality of openings are formed at equal intervals in a circumferential direction of the side wall.   The funnel part according to claim 1, wherein an opening on the narrow mouth side of the funnel protrudes from a plane including an end face on the narrow mouth side of the side wall. A packaging container for packaging powdery or liquid material and transferring the material to a storage container,
A cylindrical container body having an open end and a bottom,
A packaging container comprising: the funnel part according to claim 1 fitted into an open end of the container body. A package for transferring contents to a storage container,
A cylindrical container body having an open end and a bottom,
The funnel part according to claim 1 fitted into the open end of the container body,
A granular or liquid material filled in the container body;
A package comprising: a membrane that seals an open end of the container body and breaks when pressed from outside. A funnel part that is fitted into a cylindrical container body having an open end, a bottom part, and a side wall, constitutes a packaging container for transferring contents to a storage container, and is formed by injection molding using a mold. ,
A funnel whose diameter narrows from the wide mouth side toward the narrow mouth side,
The opening having a cylindrical shape surrounding the outer surface of the funnel, and a plurality of rectangular openings formed at equal intervals in the circumferential direction of the funnel, and a portion sandwiched between a pair of openings adjacent in the circumferential direction; Side walls including the same number of pillars;
A funnel part comprising the same number of ribs as the pillars connecting each of the pillars and the outer surface of the funnel.   When the mold having m gates (where m is an integer of 2 or more) is used, the number of the openings, the number of the column parts, and the number of the ribs are all m or 2 m. The funnel part according to claim 7. A funnel whose diameter narrows from the wide-mouth side toward the narrow-mouth side, a cylindrical shape surrounding the outer surface of the funnel, and a plurality of rectangular openings formed at equal intervals in the circumferential direction of the funnel, and in the circumferential direction A side wall including the same number of pillars as the openings, and a side wall composed of a portion sandwiched between a pair of adjacent openings, and the same number of ribs as the pillars connecting each of the pillars and the outer surface of the funnel. A funnel part mold for injection molding funnel parts,
A cavity corresponding to the funnel, the side wall, and the rib; and a plurality of gates for injecting resin into the cavity;
When viewed from the central axis of the cavity corresponding to the funnel, each of the gates is located between a pair of cavities corresponding to the pair of adjacent pillars and is rotationally symmetric with respect to the central axis. Mold for molding funnel parts.   The number of said gates is provided when the number of said openings, the number of said pillar parts, and the number of said ribs are all 2n (however, n is an integer greater than or equal to 1). Mold for molding funnel parts. A funnel whose diameter narrows from the wide-mouth side toward the narrow-mouth side, a cylindrical shape surrounding the outer surface of the funnel, and a plurality of rectangular openings formed at equal intervals in the circumferential direction of the funnel, and in the circumferential direction A funnel having a side wall including the same number of pillars as the openings and a side wall composed of a portion sandwiched between a pair of adjacent openings, and each of the pillars and the same number of ribs as connecting the outer surface of the funnel. A manufacturing method for parts,
Injecting resin into a mold having a cavity corresponding to the funnel, the side wall, and the rib, and a plurality of gates, and integrally molding the funnel, the side wall, and the rib. Have
When viewed from the central axis of the cavity corresponding to the funnel, each of the gates is located between a pair of cavities corresponding to the pair of adjacent pillars and is rotationally symmetric with respect to the central axis. Arranged,
The method of manufacturing a funnel part, wherein the resin is injected simultaneously from the plurality of gates. A funnel part that is fitted into a cylindrical container body having an open end, a bottom portion, and a side wall, and constitutes a packaging container for transferring contents to a storage container,
A funnel whose diameter narrows from the wide mouth side toward the narrow mouth side,
A funnel part comprising a plurality of ribs extending radially from the center of the opening on the narrow mouth side of the funnel and spanning part of the inner surface of the opening on the narrow mouth side and the other part.   The funnel part according to claim 12, wherein a pair of adjacent ribs form the same central angle.   The funnel part according to claim 12 or 13, further comprising a plurality of lateral ribs connecting a pair of adjacent ribs.   The funnel part according to claim 14, wherein the plurality of lateral ribs constitute a concentric circle with an opening on the narrow mouth side of the funnel.   The funnel part according to claim 15, wherein end faces on the narrow mouth side of the plurality of lateral ribs constitute the same plane.   The end face on the narrow mouth side of the plurality of lateral ribs and the end face on the narrow mouth side of a portion of the rib included in a circle constituted by the plurality of lateral ribs constitute the same plane. Item 15. The funnel part according to Item 15.   18. The funnel part according to claim 12, wherein an end face on the narrow mouth side of the rib is located on the wide mouth side from a plane including an end face on the narrow mouth side of the funnel. A packaging container for packaging powdery or liquid material and transferring the material to a storage container,
A cylindrical container body having an open end and a bottom,
A packaging container comprising: the funnel part according to claim 12 fitted into an open end of the container body. A package for transferring contents to a storage container,
A cylindrical container body having an open end and a bottom,
The funnel part according to claim 12 fitted into the open end of the container body,
A granular or liquid material filled in the container body;
A package comprising: a membrane that seals an open end of the container body and breaks when pressed from outside. A funnel part that is fitted into a cylindrical container body having an open end, a bottom portion, and a side wall, and constitutes a packaging container for transferring contents to a storage container,
A funnel whose diameter narrows from the wide mouth side toward the narrow mouth side,
A side wall connected to the funnel;
A plurality of ribs connecting the outer surface of the funnel and the inner surface of the side wall;
The funnel is an induction in which the outer diameter monotonously narrows toward the narrow mouth side from the plane including the end face on the narrow mouth side of the rib, and the longitudinal sectional shape of the outer surface is an arc shape. Funnel parts including parts.   The funnel part according to claim 21, further comprising a straight part connected to the wide-mouth side of the guide part and having a constant outer diameter.   The funnel part according to claim 21 or 22, further comprising a protruding portion that is flush with an end surface of the rib on the narrow mouth side and protrudes outward from the outer surface of the funnel. A packaging container for packaging powdery or liquid material and transferring the material to a storage container,
A cylindrical container body having an open end and a bottom,
A packaging container comprising: the funnel part according to claim 21 fitted into an open end of the container body. A package for transferring contents to a storage container,
A cylindrical container body having an open end and a bottom,
The funnel part according to claim 21 fitted into the open end of the container body;
A granular or liquid material filled in the container body;
A package comprising: a membrane that seals an open end of the container body and breaks when pressed from outside.

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