JP6537845B2 - Resin container, method of manufacturing resin container, and mold apparatus for resin container - Google Patents

Description

  The present invention relates to a resin container, a method of manufacturing the resin container, and a mold apparatus for the resin container.

  A resin container is used as a container for beverages, food and the like (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 2004-291621

  Improvement in the usability of resin containers has been desired.

  This invention is made in view of the said subject, Comprising: It aims mainly at provision of the resin container which improved usability.

According to one aspect of the present invention, in order to solve the above problems,
Container body,
And a projecting portion which protrudes outward in the radial direction from the entire circumferential direction of the end portion on the opening side of the container main body portion, and is formed in a circular plate shape having a hole .
The protrusion is
A plurality of cuts formed at intervals around the container body;
There is provided a resin container having a bent portion which is divided by the cut and used in bending.
Moreover, according to one aspect of the present invention,
Container body,
And a protruding portion that protrudes outward from an open end of the container body portion,
The protrusion has a bent portion used by bending;
The bent portion is
Starting point that is the starting point of bending,
And a remote portion which is disposed on the opposite side of the container body with respect to the start point and which is formed in a belt shape with a direction intersecting the radial direction of the container body as a longitudinal direction ,
In the first use state, the resin container is provided , wherein the bent portion is bent downward at the starting point portion, and the far portion is bent along the circumferential direction of the outer peripheral surface of the container body portion. .

  According to one aspect of the present invention, a resin container with improved usability is provided.

It is a top view of the resin container by 1st Embodiment. It is a side view of the resin container by a 1st embodiment. It is a side view which shows the state which bent down the bending part of the resin container by 1st Embodiment. It is a side view which shows the state which bent the bending part of the resin container by 1st Embodiment upwards. It is sectional drawing which shows the metal mold | die apparatus for manufacture of the resin container by 1st Embodiment. It is the figure which looked at the 2nd metal mold | die of FIG. 5 from the orthogonal | vertical direction with respect to the mating surface of a 2nd metal mold | die and a 1st metal mold | die. It is a top view of the resin container by 2nd Embodiment. It is a side view of the resin container by 2nd Embodiment. It is a side view which shows the state which bend | folded the bending part of the resin container by 2nd Embodiment downward, and also bent it along the outer peripheral surface of a container main-body part. It is a front view which shows the state which bend | folded the bending part of the resin container by 2nd Embodiment downward, and also bent it along the outer peripheral surface of a container main-body part. It is sectional drawing which shows the metal mold | die apparatus for manufacture of the resin container by 2nd Embodiment. It is the figure which looked at the 2nd metal mold | die of FIG. 11 from the orthogonal | vertical direction with respect to the mating surface of a 2nd metal mold | die and a 1st metal mold. It is a top view of the resin container by 3rd Embodiment. It is a side view of the resin container by 3rd Embodiment. It is a side view which shows the state which bent down the bending part of the resin container by 3rd Embodiment. It is a side view which shows the state which bent up the bending part of the resin container by 3rd Embodiment. It is sectional drawing which shows the metal mold | die apparatus for manufacture of the resin container by 3rd Embodiment. It is the figure which looked at the 2nd metal mold | die of FIG. 17 from the orthogonal | vertical direction with respect to the mating surface of a 2nd metal mold | die and a 1st metal mold | die.

  Hereinafter, although the form for carrying out the present invention is explained with reference to drawings, the same or corresponding numerals are attached about the same or corresponding composition in each drawing, and explanation is omitted.

First Embodiment
FIG. 1 is a top view of the resin container according to the first embodiment. FIG. 2 is a side view of the resin container according to the first embodiment. FIG. 3 is a side view showing a state in which the bent portion of the resin container according to the first embodiment is bent downward. FIG. 4 is a side view showing a state in which the bent portion of the resin container according to the first embodiment is bent upward.

  The resin container 10 is used as a container for beverages and food. The resin container 10 has a container body 20 and a protrusion 30. The container body portion 20 and the projecting portion 30 are integrally molded by injection molding or the like. The method for producing a resin container by injection molding will be described later.

  The container main body portion 20 is formed, for example, in a bottomed cylindrical shape, and has a body portion 21 and a bottom portion 22 closing the bottom of the body portion 21. The body 21 may be tapered toward the bottom 22. Although the details will be described later, the releasability of the container body 20 from the mold used for injection molding is good.

  The protrusion 30 protrudes from the outer peripheral surface of the container body 20. For example, the protrusions 30 project from the outer peripheral surface of the container body 20 to the left and right. When things (for example, hot water) higher than room temperature are put into the inside of the container main body 20, the temperature change of the protrusion 30 is smaller than the temperature change of the container main body 20, and the usability of the protrusion 30 is good.

  In addition, you may put in the inside of the container main body part 20 (for example, ice) lower than room temperature. Also in this case, the temperature change of the protrusion 30 is smaller than the temperature change of the container body 20, and the convenience of the protrusion 30 is good.

  The protrusion 30 may protrude from the end of the opening side (the opposite side to the bottom 22) of the container body 20, as shown in FIG. Although described later in detail, the projecting portion 30 can be formed at a predetermined depth from the mating surface of dies used for injection molding. Compared with the case where the protrusion 30 protrudes from the center in the height direction of the container body 20, the structure of the mold can be simplified.

  The protrusion 30 may be formed in a plate shape.

  The protrusion 30 has a bend 31. The bent portion 31 is used by bending. Thereby, the usability of the resin container 10 can be improved.

  For example, as shown in FIG. 3, the bending portion 31 may be used as at least one of a hand-held holding portion and a lip-receiving mouth portion by being bent downward. The grip portion and the spout portion may form a gap 35 with the outer peripheral surface of the container body portion 20. The gap 35 functions as a heat insulating layer.

  Moreover, the bending part 31 may be used as a cover part which closes the opening part of the container main-body part 20 by being bended up, as shown in FIG. The lid may close at least a part of the opening of the container body 20.

  In addition, although the bending part 31 of this embodiment is bent and used, it may be bent round and may be used.

  The bending portion 31 may have a starting point portion 32 which is a starting point of bending, and a distant portion 33 disposed on the opposite side of the container body portion 20 with respect to the starting point portion 32. For example, as shown in FIG. 1, the starting point portion 32 is narrower than the distant portion 33. The starting point portion 32 also plays a role of narrowing the heat transfer path. The starting point portion 32 may be thinner than the distant portion 33, or thinner and narrower than the distant portion 33.

  FIG. 5 is a cross-sectional view showing a mold apparatus for manufacturing a resin container according to the first embodiment. FIG. 6 is a view of the second mold of FIG. 5 as seen from a direction perpendicular to the mating surface of the second mold and the first mold.

  Injection molding is used as a method of manufacturing the resin container 10. In the injection molding, the molding material is filled in the mold apparatus 50 to mold the resin container 10.

  The mold apparatus 50 is divided into a first mold 51 and a second mold 52. By bringing the first mold 51 and the second mold 52 into contact with or separated from each other, mold closing and mold opening are performed. Further, by clamping the first mold 51 and the second mold 52, mold clamping is performed.

  A cavity 54 is formed between the first mold 51 and the second mold 52 in a clamped state, and the cavity 54 is filled with a molding material. The cavity 54 has a container body cavity corresponding to the container body 20 and a protrusion cavity corresponding to the protrusion 30. The protrusion cavity has a bend cavity corresponding to the bend 31. The molding material filled in the cavity 54 is cooled and solidified to obtain the resin container 10 as a molded article. The resin container 10 is taken out of the mold apparatus 50 after the mold is opened.

  As described above, the resin container 10 has the container body 20 and the projecting portion 30 projecting from the outer peripheral surface of the container body 20. The protrusion 30 has a bend 31. The bent portion 31 is used by bending. Thereby, the usability of the resin container 10 can be improved.

  The container main body portion 20 is formed, for example, in a bottomed cylindrical shape, and has a body portion 21 and a bottom portion 22 closing the bottom of the body portion 21. The body 21 may be tapered toward the bottom 22. The draft is formed in the mold device 50, and the releasability of the container body 20 from the mold device 50 is good.

  The protrusion 30 may protrude outward from the open end of the container body 20, as shown in FIG. The protrusion 30 can be formed at a predetermined depth from the mating surface 53 of the first mold 51 and the second mold 52. Compared with the case where the protrusion 30 protrudes from the center in the height direction of the container body 20, the structure of the mold apparatus 50 can be simplified.

  When the projecting portion 30 projects from the center in the height direction of the container body 20, the second mold 52 is divided into a plurality of members so that the projecting portion 30 can be released from the second mold 52. The members of are relatively movable.

Second Embodiment
FIG. 7 is a top view of the resin container according to the second embodiment. FIG. 8 is a side view of the resin container according to the second embodiment. FIG. 9 is a side view showing a state in which the bent portion of the resin container according to the second embodiment is bent downward and is further bent along the outer peripheral surface of the container body. FIG. 10 is a front view showing a state in which the bent portion of the resin container according to the second embodiment is bent downward and is further bent along the outer peripheral surface of the container body.

  The resin container 10A has a container body 20A and a protrusion 30A. The container body portion 20A and the projecting portion 30A are integrally molded by injection molding or the like. The method for producing a resin container by injection molding will be described later.

  The container body 20A is formed, for example, in a bottomed cylindrical shape, and has a body 21A and a bottom 22A that closes the bottom of the body 21A. The body 21A may be tapered toward the bottom 22A. Although described later in detail, the releasability of the container main body 20A from the mold used for injection molding is good.

  The protrusion 30A protrudes from the outer peripheral surface of the container body 20A. For example, the projection 30A may project to one side of the container body 20A as shown in FIGS. 7 and 8. When a high temperature thing or a low temperature thing is put inside the container body 20A, the temperature change of the protrusion 30A is smaller than the temperature change of the container body 20A, and the convenience of the protrusion 30A is good.

  The protrusion 30A may protrude outward from the end on the opening side (the side opposite to the bottom 22A) of the container body 20A, as shown in FIG. Although described later in detail, the projecting portion 30A can be formed at a predetermined depth from the mating surface of dies used for injection molding. The structure of the mold can be simplified as compared with the case where the protrusion 30A protrudes from the center in the height direction of the container body 20A.

  The protrusion 30A may be formed in a plate shape.

  The protrusion 30A has a bent portion 31A. The bent portion 31A is used by bending. Thereby, the usability of the resin container 10A can be improved.

  For example, the bending portion 31A is bent downward as shown in FIGS. 9 and 10, and is further bent along the outer peripheral surface of the container main portion 20A, so that the grip portion grasped by the hand and the mouth portion to which the lip is applied It may be used as at least one. The grip portion and the spout portion may form a gap 35A with the outer peripheral surface of the container main portion 20A as shown in FIG. The gap 35A functions as a heat insulating layer.

  In addition, the bent portion 31A may be used as a lid that closes the opening of the container body 20A by being bent upward. The lid may close at least a part of the opening of the container body 20A.

  In addition, although the bending part 31A of this embodiment is bent and used, it may be bent round and may be used.

  The bending portion 31A may have a starting point 32A as a starting point of bending, and a distant part 33A disposed on the opposite side of the container body 20A with respect to the starting point 32A. For example, as shown in FIG. 7, the starting point portion 32A is narrower than the distant portion 33A. The starting point portion 32A also plays a role of narrowing the heat transfer path. The starting point portion 32A may be thinner than the distant portion 33A, or thinner and narrower than the distant portion 33A.

  FIG. 11 is a cross-sectional view showing a mold apparatus for manufacturing a resin container according to a second embodiment. FIG. 12 is a view of the second mold of FIG. 11 as seen from a direction perpendicular to the mating surface of the second mold and the first mold.

  Injection molding is used as a method of manufacturing the resin container 10A. In injection molding, a molding material is filled in the mold apparatus 50A to mold the resin container 10A.

  The mold apparatus 50A is divided into a first mold 51A and a second mold 52A. A cavity 54A is formed between the first mold 51A and the second mold 52A in a clamped state. The cavity 54A has a container body cavity corresponding to the container body 20A and a projection cavity corresponding to the projection 30A. The protrusion cavity has a bend cavity corresponding to the bend 31A. The resin container 10A is molded in the cavity 54A. The resin container 10A is taken out of the mold apparatus 50A after the mold is opened.

  As described above, the resin container 10A has the container body 20A and the protruding portion 30A that protrudes from the outer peripheral surface of the container body 20A. The protrusion 30A has a bent portion 31A. The bent portion 31A is used by bending. Thereby, the usability of the resin container 10A can be improved.

  The container body 20A is formed, for example, in a bottomed cylindrical shape, and has a body 21A and a bottom 22A that closes the bottom of the body 21A. The body 21A may be tapered toward the bottom 22A. The draft angle is formed in the mold apparatus 50A, and the releasability of the container body 20A from the mold apparatus 50A is good.

  The protrusion 30A may protrude outward from the open end of the container body 20A, as shown in FIG. The protrusion 30A can be formed at a predetermined depth from the mating surface 53A of the first mold 51A and the second mold 52A. The structure of the mold apparatus 50A can be simplified as compared with the case where the protrusion 30A protrudes from the center in the height direction of the container body 20A.

  When the protruding portion 30A protrudes from the center in the height direction of the container body 20A, the second mold 52A is divided into a plurality of members so that the protruding portion 30A can be released from the second mold 52A. The members of are relatively movable.

Third Embodiment
FIG. 13 is a top view of the resin container according to the third embodiment. FIG. 14 is a side view of the resin container according to the third embodiment. FIG. 15 is a side view showing a state in which the bent portion of the resin container according to the third embodiment is bent downward. FIG. 16 is a side view showing a state in which the bent portion of the resin container according to the third embodiment is bent upward.

  The resin container 10B has a container body 20B and a protrusion 30B. The container body portion 20B and the projecting portion 30B are integrally molded by injection molding or the like. The method for producing a resin container by injection molding will be described later.

  The container main body portion 20B is formed, for example, in a bottomed cylindrical shape, and has a body portion 21B and a bottom portion 22B that closes the bottom of the body portion 21B. The body 21B may be tapered toward the bottom 22B. Although the details will be described later, the releasability of the container body 20B from the mold used for injection molding is good.

  The protrusion 30B protrudes from the outer peripheral surface of the container body 20B. For example, as shown in FIG. 13 and FIG. 14, the protruding portion 30B may be formed in a ring shape protruding from the entire circumferential direction of the container body 20B. When a high temperature thing or a low temperature thing is put inside the container body 20B, the temperature change of the protrusion 30B is smaller than the temperature change of the container body 20B, and the usability of the protrusion 30B is good.

  The protrusion 30B may protrude outward from the end on the opening side (the side opposite to the bottom 22B) of the container body 20B, as shown in FIG. Although described later in detail, the projecting portion 30B can be formed at a predetermined depth from the mating surface of dies used for injection molding. The structure of the mold can be simplified as compared with the case where the protrusion 30B protrudes from the center in the height direction of the container body 20B.

  The protrusion 30B may be formed in a plate shape.

  The protrusion 30B has a bent portion 31B. The bent portion 31B is used by bending. Thereby, the usability of the resin container 10B can be improved.

  For example, as shown in FIG. 15, the bent portion 31B may be used as at least one of a hand-held grip portion and a mouth portion for applying a lip by being bent downward. The grip portion and the spout portion may form a gap with the outer peripheral surface of the container body portion 20B. The gap functions as a heat insulating layer.

  Further, the bent portion 31B may be used as a lid that closes the opening of the container body 20B by being bent upward as shown in FIG. The lid may close at least a part of the opening of the container body 20B.

  In addition, although the bending part 31B of this embodiment does not have the starting point part used as the starting point of bending, you may have a starting point part.

  Further, in FIGS. 14 and 15, all of the plurality of bent portions 31B are bent, but only a part of the plurality of bent portions 31B may be bent. It can be bent according to the user's preference. Moreover, a part of bending part 31B may be used as a holding part, and the other part bending part 31B may be used as a cover part.

  A cut 34B may be formed in the projecting portion 30B as shown in FIG. The bent portion 31B can be partitioned.

  A plurality of cuts 34B may be formed around the container body 20B at intervals as shown in FIG.

  FIG. 17 is a cross-sectional view showing a mold apparatus for manufacturing a resin container according to a third embodiment. FIG. 18 is a view of the second mold of FIG. 17 viewed in a direction perpendicular to the mating surface of the second mold and the first mold.

  Injection molding is used as a method of manufacturing the resin container 10B. In injection molding, a molding material is filled in the mold apparatus 50B to mold the resin container 10B.

  The mold apparatus 50B is divided into a first mold 51B and a second mold 52B. A cavity 54B is formed between the first mold 51B and the second mold 52B in the clamped state. The cavity 54B has a container body cavity corresponding to the container body 20B and a projection cavity corresponding to the projection 30B. The protrusion cavity has a bend cavity corresponding to the bend 31B. The resin container 10B is molded in the cavity 54B. The resin container 10B is taken out of the mold apparatus 50B after the mold is opened.

  As described above, the resin container 10B has the container body 20B and the projecting portion 30B protruding from the outer peripheral surface of the container body 20B. The protrusion 30B has a bent portion 31B. The bent portion 31B is used by bending. Thereby, the usability of the resin container 10B can be improved.

  The container main body portion 20B is formed, for example, in a bottomed cylindrical shape, and has a body portion 21B and a bottom portion 22B that closes the bottom of the body portion 21B. The body 21B may be tapered toward the bottom 22B. The draft is formed in the mold device 50B, and the releasability of the container body 20B from the mold device 50B is good.

  The protrusion 30B may protrude outward from the open end of the container body 20B, as shown in FIG. The protrusion 30B can be formed at a predetermined depth from the mating surface 53B of the first mold 51B and the second mold 52B. The structure of the mold apparatus 50B can be simplified as compared with the case where the protrusion 30B protrudes from the center in the height direction of the container body 20B.

  When the protruding portion 30B protrudes from the center in the height direction of the container body 20B, the second mold 52B is divided into a plurality of members so that the protruding portion 30B can be released from the second mold 52B. The members of are relatively movable.

  As mentioned above, although the embodiment of the injection molding machine was described, the present invention is not limited to the above-mentioned embodiment, and various modifications and improvements are possible within the scope of the subject matter of the present invention described in the claims. It is possible.

  For example, although the whole protrusion of the said embodiment is used as a bending part, only a part of protrusion may be used as a bending part, and the remaining part of a protrusion may be made difficult to bend.

DESCRIPTION OF SYMBOLS 10 resin container 20 container main-body part 30 protrusion part 31 bending part 32 starting point part 34B cut 50 mold apparatus 51 1st mold 52 2nd mold

Claims (11)

Container body,
And a projecting portion which protrudes outward in the radial direction from the entire circumferential direction of the end portion on the opening side of the container main body portion, and is formed in a circular plate shape having a hole .
The protrusion is
A plurality of cuts formed at intervals around the container body;
A resin container having a bent portion which is divided by the cut and used by bending.   The resin container according to claim 1, wherein the bending portion has a starting point portion that becomes a starting point of bending. Container body,
And a protruding portion that protrudes outward from an open end of the container body portion,
The protrusion has a bent portion used by bending;
The bent portion is
Starting point that is the starting point of bending,
And a remote portion which is disposed on the opposite side of the container body with respect to the start point and which is formed in a belt shape with a direction intersecting the radial direction of the container body as a longitudinal direction ,
In the first use state, the bent portion is bent downward at the starting point portion, and the far portion is used along a circumferential direction of an outer peripheral surface of the container body portion.   The resin container according to any one of claims 1 to 3, wherein the bent portion is bent and used as a grip held by a hand.   The resin container according to any one of claims 1 to 4, wherein the bent portion is bent to be used as a spout portion for applying a lip. The bending portion, by being bent, the use as a lid for closing the opening portion of the container body, the resin container according to claim 1 or claim 2. In the second use state, the bending portion, wherein the said first usage state in the starting portion that is bent in the opposite direction, is used as a lid for closing the opening portion of the container body, according to claim 3 The resin container as described in. Manufacturing a resin container by injection molding;
The resin container has a container main body, and a protrusion which protrudes radially outward from the entire circumferential direction of the entire end of the container main body on the opening side and is formed into a holed circular flat plate shape .
A manufacturing method of a resin container, wherein the projection has a plurality of cuts formed at intervals around the container body and a bent portion which is divided by the cut and used by bending. Manufacturing a resin container by injection molding;
The resin container has a container main body, and a protrusion protruding outward from an open end of the container main body,
The protrusion has a bent portion used by bending;
The bending portion is disposed on the opposite side to the container body portion with respect to the starting point portion serving as a bending starting point and the container portion with respect to the origin portion, and is formed in a strip shape with a direction intersecting the radial direction of the container body portion as a longitudinal direction A method for producing a resin container, comprising: A mold apparatus comprising a first mold and a second mold, wherein a cavity for molding a resin container is formed between the first mold and the second mold,
The cavity protrudes radially outward from the entire circumferential direction of the container body cavity formed corresponding to the container body and the end on the opening side of the container body, and is formed into a circular plate having a hole. And a projection cavity formed corresponding to the projection to be
The mold apparatus has a projecting cavity defined by a plurality of cuts formed at intervals around the container body, and having a bending cavity formed corresponding to the bending used for bending. A mold apparatus comprising a first mold and a second mold, wherein a cavity for molding a resin container is formed between the first mold and the second mold,
The cavity has a container body cavity formed corresponding to the container body, and a projection cavity formed corresponding to the projection projecting outward from the open end of the container body. And
The projection cavity has a bending cavity formed corresponding to the bending used for bending;
The bent portion cavity is a starting point of bending, and a starting point cavity formed corresponding to the starting point bent downward, and the container is disposed on the opposite side of the container body with respect to the starting point, the container It is formed in a strip shape with the direction intersecting with the radial direction of the main body as the longitudinal direction, and has a distant portion cavity formed corresponding to the distant portion used by bending along the circumferential direction of the outer peripheral surface of the container body. , Mold equipment.

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