JP2016220871A - Cosmetic container including inner lid with net, inner lid with net, manufacturing method for the same, and metal mold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cosmetic container including an inner lid with a net, allowing using cosmetic without waste, without sacrificing a storage space of cosmetic, owing to including the inner lid in which a net is bridged over the whole bottom, and surely preventing falling of the net.SOLUTION: A cosmetic container 1 which includes a container body 4 having an opening in the upper side and storing cosmetic comprising liquid, an outer lid 2 sealing the opening of the container body, and an inner lid 3 attached to the container body is such that: the inner lid is obtained by stretching a net 10 having elasticity and comprising a mesh material on the lower end side of a flat and hollow cylindrical frame body 31 with an axis of the vertical direction; the frame body has an outer surface shape brought into close contact with an inner peripheral surface 44 of the container body; and the net has a circumference which is adhered from a bottom edge 35 of the frame body to the inner peripheral surface of the frame body, and in an adhesion area to the frame body, resin constituting the frame body is solidified in a state of being inserted into the mesh material.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a cosmetic container that stores cosmetics made of a fluid containing powder, paste, and the like. Specifically, the present invention relates to a cosmetic container that includes a net-attached inner lid in which a net is stretched around a frame. The present invention also relates to an inner lid with a net, a manufacturing method thereof, and a mold used in the manufacturing method.

  A cosmetic container (hereinafter also referred to as a cosmetic container with a net) having a container body that opens upward with the bottom as the bottom and an inner lid with a net on which a stretchable net is stretched is connected to the net by a puff or the like. When pressed downward, the cosmetic contained in the container body oozes out from the upper surface of the net. Then, the exuded cosmetic is copied into a puff. Such a cosmetic container with a net is described in, for example, the following Patent Documents 1 to 4.

JP 2005-224398 A JP 2008-194190 A Japanese Utility Model Publication No. 7-43575 Japanese Patent Laid-Open No. 9-191930

  The inner lid provided in the conventional cosmetic container with a net described in Patent Documents 1 to 3 and the like opens the bottom of the dish-shaped inner lid leaving an edge, and holds the net at the edge. That is, there is no net at the bottom edge, and when cosmetics are used, the cosmetics below the edges remain. If the viscosity of the cosmetic is high, the cosmetic cannot be used without waste. Even when the viscosity of the cosmetic is low, it is necessary to bring the cosmetic to the center of the bottom of the inner lid on which the net is stretched by tilting the container body, and the workability during makeup is poor. Although it is conceivable to lay the net over the entire bottom surface, in this case, the contact area between the net and the inner lid is insufficient, and the net may drop off when the net is pressed. In the cosmetic container with a net described in Patent Document 4, no cosmetic storage space is provided below the edge, and only the cosmetic storage space is provided below the net. The lower end of the frame is brought into contact with the bottom surface of the container body, and the inside of the inner lid is used as a cosmetic storage space. That is, the original cosmetic storage space of the container body is sacrificed. In other words, if the amount of cosmetics stored is the same, the container becomes larger.

  Therefore, the present invention is equipped with an inner lid with a net over the entire bottom without sacrificing the storage space for the cosmetic, so that the cosmetic can be used without waste and the net can be reliably prevented from falling off. It aims at providing the cosmetics container provided with the inner lid, the inner lid with a net | network, the manufacturing method of an inner lid with a net | network, and the metal mold | die used in the said manufacturing method.

In order to achieve the above object, the present invention provides a container body for storing cosmetics made of a fluid having an opening at the top, an outer lid for sealing the opening of the container body, and the container body. And an inner lid
The inner lid is formed by stretching a net made of a mesh material having elasticity on the lower end side of a flat hollow cylindrical frame with the vertical direction as an axis,
The frame has an outer surface shape that is in close contact with the inner peripheral surface of the container body,
The net has a peripheral edge bonded from the lower end of the frame body to the inner peripheral surface of the frame body, and a resin constituting the frame body is in an eye of the mesh material in an adhesion region with the frame body. Solidified in a state of entering,
A cosmetic container having an inner lid with a net characterized by the above.

Further, the scope of the present invention includes an inner lid that stores cosmetics made of fluid and is detachably attached to a cosmetic container that is sealed by an outer lid.
A net made of a stretchable mesh material is stretched on the lower end side of the hollow cylindrical frame with the vertical axis as the axis,
The net has a peripheral edge bonded from the lower end of the frame body to the inner peripheral surface of the frame body, and a resin constituting the frame body is in an eye of the mesh material in an adhesion region with the frame body. Solidified in a state of entering,
This is an inner lid with a net for a cosmetic container.

The manufacturing method of the inner lid with a net is also within the scope of the present invention, and the manufacturing method is
A plurality of molds that form a cylindrical cavity corresponding to the outer shape of the frame body by relative movement in the vertical direction, and a hollow portion of the frame body that is inserted into the cavity from above and below. Using a first core and a second core of
The mold is closed while the mesh material is bridged in the left-right direction below the cavity, and the first and second cores are inserted into the cavity so that the hollow cylindrical cavity is vertically moved by the mesh material. A mold clamping step,
An injection step of molding a molten resin into a hollow cylindrical cavity formed by the mold clamping step;
A mold release step of opening the mold after the resin injected by the injection step is solidified and taking out the molded body;
Including
In the mold clamping step, a hollow cylindrical cavity having a flange formed at the lower end is formed, and the mesh material is narrowed above the flange portion by the upper surface of the first core and the lower surface of the second core. Hold
In the mold release step, the mold is moved downward relative to the first and second cores in a state where the mesh material is held by the first and second cores, Cutting the mesh material bonded to the flange and the lower surface of the flange at the boundary between the mold and the first core;
This is a manufacturing method of an inner lid with a net of a cosmetic container.

  In the mold clamping step, the mesh material is moved upward in an annular region that goes around the cavity inside the restriction region while restricting movement of the mesh material in the bridging direction outside the cavity. It is good also as giving a tension | tensile_strength to the said mesh raw material by pressing.

The present invention also extends to a mold used in the method of manufacturing the inner lid with a net, the mold is
From the bottom to the top, a first mold having the first core, a second mold in which a cylindrical cavity corresponding to the outer shape of the frame is formed, and the second core are fixed The third mold is arranged in this order,
The first mold supports and supports the mesh material, and when the mold is closed, a pressing mechanism for restricting the movement of the mesh material in the left-right direction and a tensioning mechanism for applying tension to the mesh material With members,
The pressing mechanism includes a cylinder portion that is formed by a hole that opens upward and extends in the vertical direction, and a piston portion that is slid upward and downward relative to the cylinder portion while being biased upward.
The tension member is annularly arranged so as to go around the cavity in a region between the cylinder part and the cavity formation region while protruding upward,
The second mold has a recess formed in the lower surface for accommodating the tension member.
It is characterized by that.

  Further, it is more preferable that the mold is configured such that a plurality of types of the extending members having different projecting heights can be detachably replaced.

  According to the cosmetic container provided with the inner lid with the net of the present invention, the cosmetic can be used without waste by including the inner lid with the net laid across the entire bottom without sacrificing the space for storing the cosmetic. At the same time, it is possible to reliably prevent the net from dropping off. Other effects will be clarified in the following description.

It is an exploded view of a cosmetic container with a net according to an embodiment of the present invention. It is a figure which shows the structure of the said Example. It is a figure which shows the structure of the inner lid which comprises the said Example. It is a figure which shows the structure of the metal mold | die for injection molding for manufacturing the said inner cover. It is a figure which shows the process in which the said metal mold | die is closed in the manufacturing method of the said inner lid. It is a figure which shows the state which closed the said metal mold | die in the manufacturing method of the said inner lid. It is a figure which shows the shape of the cavity formed in the said closed metal mold | die in the manufacturing method of the said inner lid. It is a figure which shows the process in which the said metal mold | die is opened when taking out the injection-molded inner lid in the manufacturing method of the said inner lid. It is a figure which shows the state which opened the said metal mold | die in order to take out the said inner cover. It is a figure which shows the cutting state of the mesh raw material used in the manufacturing method of the said inner lid.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. Note that in the drawings used for the following description, the same or similar parts may be denoted by the same reference numerals and redundant description may be omitted. In some drawings, reference numerals may be assigned to parts that are not required in other drawings if unnecessary.

=== Cosmetic container ===
FIG. 1 shows a cosmetic container with a net (hereinafter also referred to as cosmetic container 1) according to an embodiment of the present invention. FIG. 1 is a perspective view when the cosmetic container 1 is disassembled for each component, and as shown in this figure, the cosmetic container 1 has a bowl-shaped container body 4 and an outside for sealing the opening of the container body 4. A lid 2 and an inner lid 3 mounted in the container body 4 are provided. Here, if the vertical direction is defined as the container body 4 opening upward, in the illustrated example, the container body 4 has a lower bowl-shaped part 41 serving as a cosmetics storage part and its bowl-shaped part. A flat cylindrical neck portion 42 continuous above 41 is formed, and a male screw 43 is formed on the outer periphery of the neck portion 42. A female screw that is screwed to the male screw is formed on the inner peripheral surface of the flat cylindrical outer lid 2. The inner peripheral surface 44 of the container body 4 is formed in a cylindrical shape. The inner lid 3 has a structure in which a net 10 using a mesh member is stretched at a lower end 35 of a cylindrical frame 31 whose outer peripheral surface is in close contact with the inner peripheral surface 44 of the container body 4. Further, the upper end 33 of the frame 31 projects in a bowl shape.

  FIG. 2A is a perspective view showing a state in which the inner lid 3 is attached to the container body 4, and FIG. 2B is a perspective view showing a state in which the container body 4 is sealed with the outer lid 2. FIG. 2C is a longitudinal sectional view when the cosmetic container 1 is cut along a plane including the vertical direction. As shown in FIG. 2A, when the inner lid 3 is mounted in the container main body 4, the lower surface of the bowl-shaped portion of the inner lid 3 comes into contact with the upper end surface of the container main body 4. This prevents the inner lid 3 from falling into the container body 4. Of course, as a structure for preventing the inner lid 3 from falling into the container body, a bowl-shaped portion (hereinafter also referred to as a fall prevention part 34) is not formed at the upper end of the frame 31, and for example, the container body 4 An appropriate structure is conceivable, such as providing a protrusion for supporting the lower end of the inner lid 3 on the inner peripheral surface of the inner cover 3. When the inner lid 3 is attached to the container body 4 and the container body 4 is sealed with the outer lid 2, the cosmetic container 1 having the appearance as shown in FIG. Further, as shown in FIG. 2C, the outer peripheral surface 32 of the frame 31 in the inner lid 3 is in close contact with the inner peripheral surface 44 of the container body 4. Further, the lower end 35 of the frame body 31 and the lower surface 11 of the net 10 in the inner lid 3 are spaced upward from the bottom surface 45 of the container body 4. Inside the container body 4, the space from the bottom surface 45 to the lower surface 11 of the net 10 is a storage space for the cosmetic 5, and the cosmetic 5 is stored so that the upper surface 6 does not contact the lower surface 11 of the net 10. When the upper surface 12 of the net 10 is pressed downward and the lower surface 11 of the net 10 is brought into contact with the cosmetic 5, the upper surface 12 of the net 10 is passed through the mesh material “eyes” constituting the net 10. It begins to bleed to the side. In the cosmetic container 1 according to the embodiment, the container main body 4, the outer lid 2, and the frame body 31 are formed of resin injection-molded products, but the container main body 4 and the outer lid 2 are formed of other materials. May be. Moreover, the mesh material which comprises the net | network 10 of the inner lid 3 is what knit the fiber which is rich in a stretching property, As a fiber, for example, the resin which mainly mixed PET resin and the urethane resin which is rich in a stretching property etc. Can be adopted.

  In the cosmetic container 1 configured as described above, the inner lid 3 is the essence of the present invention. FIG. 3 shows the structure of the inner lid 3 in more detail. FIG. 3A is a perspective view when the inner lid 3 is viewed from above, and FIG. 3B is a perspective view when the inner lid 3 is viewed from below. FIG. 3C is a longitudinal sectional view of the inner lid 3. As shown in FIG. 3A, the inner lid 3 has a structure in which a net 10 is stretched around a lower end 35 of a flat hollow cylindrical frame 31. However, as shown in FIGS. 3B and 3C, the net 10 has a “raised bottom” shape in which the peripheral portion 13 of the upper surface 12 is not bonded only to the lower end 35 of the frame 31. Thus, the peripheral edge portion 13 is bonded from the lower end 35 of the frame body 31 to the inner peripheral surface 36. Moreover, in the cosmetic container 1 according to the embodiment, the resin material constituting the frame body 31 is solidified in the peripheral portion 13 of the net 10 bonded to the frame body 31 infiltrating the eyes of the mesh material of the net 10. doing.

  Thus, in the cosmetic container 1 according to the embodiment, there is no edge for stretching the net 10 inside the frame 31, and the net 10 is stretched so as to cover the entire opening region of the frame 31. Yes. Therefore, the cosmetic in the container body 4 can be used without waste. Further, the peripheral portion 13 of the net 10 contacts not only the lower end 35 of the frame 31 but also the inner peripheral surface 36 to ensure a wide adhesion area, and not only the surface of the mesh material but also a complicated solid of the mesh material. A resin that substantially functions as an adhesive also enters the structure. As a result, the net 10 is more firmly fixed to the frame body 31, and the net 10 can be reliably prevented from peeling off from the frame body 31 when the net 10 is pressed. Of course, the frame body 31 does not need to be thick, and the lower end 35 of the frame body 31 does not need to contact the bottom surface of the container body 4. That is, the storage space for the cosmetic in the container body 4 can be used without waste, and the cosmetic container 1 does not increase in size.

=== Production method ===
In the cosmetic container according to the embodiment, the container body and the outer lid can be easily manufactured by a general injection molding technique. On the other hand, it is necessary to devise a manufacturing method for the inner lid, which is a feature of the cosmetic container according to the embodiment. In other words, it is necessary to realize a structure in which the resin constituting the frame body enters the mesh material eye. It is possible to manufacture the inner lid of the shape shown in FIG. 3 if the injection molding is performed while the mesh material is spanned over the mold for molding the frame.

  However, with a predetermined tension (hereinafter also referred to as tension) applied to the soft mesh material, the soft mesh material is fixed to the lower end of the frame body and the inner peripheral surface in the vicinity with high strength. Since it is necessary to cut with high accuracy, it is not easy to manufacture a high-quality frame body with a high yield. In addition, the mesh material needs to have an eye roughness that prevents cosmetics from leaking in a normal state where the mesh material is just stretched on the frame, and has pressed the net with appropriate elasticity. Sometimes it is necessary to open the mesh so that an appropriate amount of cosmetic can be removed. Therefore, it is necessary to adjust the tension with high precision during injection molding. Therefore, hereinafter, a procedure for manufacturing the inner lid of the cosmetic container according to the above embodiment with higher quality and more efficiently, a structure of a mold used in the procedure, and the like will be described.

  FIG. 4 is a diagram illustrating a structure of a mold 50 for manufacturing the cosmetic container according to the embodiment. Here, when the vertical relationship in the cosmetic container 1 and the inner lid 3 shown in FIGS. 1 to 3 is also applied to the vertical relationship in the mold 50, the mold 50 is the first mold fixed at the lowest position. 51, a second mold 52 arranged above the first mold 51 and movable up and down, and a third mold arranged above the second mold 53 and movable up and down It consists of a mold 53. The mold 52 is formed with a cylindrical cavity 57 that follows the outer shape of the frame body. The first mold 51 is inserted below the cavity 57 so that the inner lid covers the net. A first core 54 for forming a lower frame hollow portion is provided. The first core 54 is configured to be movable in the vertical direction with respect to the first mold 51. Further, a second core 55 for forming a hollow portion above the frame is fixed to the third mold 53.

  Note that the vertical direction of the mold 50 and the cosmetic container 1 is relative, and is for associating each part of the cosmetic container 1 and the inner lid 3 with the structure and operation of the mold 50. That is, the up-down direction here is not an absolute up-down direction (vertical direction, top-down direction). Then, as the direction orthogonal to the vertical direction, the left and right direction of the drawing sheet is the left and right direction of the mold 50 and the depth direction of the drawing is the front and back direction, the final mold is placed between the first mold 51 and the second mold 52. In particular, a belt-like mesh material 100 that becomes a net of an inner lid is stretched in the left-right direction with the vertical direction as a normal line. Further, the mesh material 100 is wound around rolls (101, 102) each having both left and right ends having a rotation axis in the front-rear direction. The mesh material 100 is supplied from one roll (for example, the left roll 101) and wound by the other roll (for example, the right roll 102). Next, the structure of each mold (51-53) will be described in more detail.

  The first mold 51 includes a pressing mechanism 60 for holding the mesh material 100 between the second mold 53 when the mold 50 is closed, and a predetermined tension on the mesh material 100 that is bridged. A tension member 70 is provided to provide the power. The pressing mechanism 60 includes, for example, a cylinder portion 61 formed as a vertical hole in the first mold 51, a piston portion 62 that can slide in the vertical direction within the cylinder portion 61, and an urging upward of the piston portion 62. It can be constituted by a spring 63 or the like. In the example shown here, the cylinder portion 61 has a groove shape extending in the front-rear direction, and is formed over a length that crosses the mesh material 100 spanned in the left-right direction in the front-rear direction. The piston part 62 has a rectangular parallelepiped shape along the inner surface shape of the grooved cylinder part 61, and the upper surface is formed of a material (rubber or the like) having a large friction coefficient. A cylindrical rod 65 extending in the vertical direction is connected to the lower surface 64 of the piston portion 62, and the rod 65 is inserted into a circular hole 67 formed in the bottom surface 66 of the cylinder portion 61. A spring 63 is mounted on the rod 65, and the upper end of the spring 63 is in contact with the lower surface 64 of the piston portion 62, and the lower end is in contact with the bottom surface 66 of the cylinder portion 61. Thereby, in the initial state in which the mold 50 is open, the piston portion 62 is urged upward, and its upper surface protrudes from the upper surface 56 of the first mold. When the piston part 62 is pressed from above, it slides downward along the inner surface shape of the cylinder part 61. A hole 67 opened in the bottom surface 66 of the cylinder portion 61 is continuous with a cylindrical hollow space 68 below, and a lower end side of the rod 65 projects into the hollow space 68. The lower end of the rod 65 is larger in diameter than the hole 67 in the bottom surface 66 of the cylinder portion 61 so that the rod 65 and the piston portion 62 connected to the upper end thereof do not deviate from the cylinder portion 61. One rod or a plurality of rods may be used.

  The tension member 70 is formed in a ring shape that surrounds the periphery of the cylindrical cavity 57 in the second mold 52, and protrudes upward at a predetermined height with respect to the upper surface 56 of the first mold 51. . The protruding portion has a trapezoidal cross-sectional shape. Further, a recess 71 for accommodating the tension member 70 is formed on the lower surface 58 of the second mold 52 so as to go around the cavity 57.

  The manufacturing procedure of the inner lid is shown in FIGS. FIG. 5 is a diagram showing a process of closing the mold 50, and FIG. 6 is a diagram showing a state when the mold 50 is closed. FIG. 7 is an enlarged view of the shape of the molten resin injected into the closed mold 50, and FIG. 8 is a diagram showing a process of opening the mold 50. FIG. 9 is a view showing a state when the mold 50 is opened. Hereinafter, the manufacturing procedure of the inner lid will be described with reference to FIGS. 5 to 9. First, as shown in FIG. 5A, when the mold 50 is closed, the lower surface 103 of the mesh material 100 is moved by the pressing mechanism 60. The piston portion 62 is biased upward while being supported by the upper surface of the piston portion 62. As shown in FIG. 5B, the mesh material 100 is held between the lower surface 58 of the second mold 52 and the upper surface of the piston portion 62 of the first pressing mechanism 60. Thereby, the mesh material 100 is regulated so as not to be displaced in the left-right direction. Next, as shown in FIG. 6A, when the mold 50 is completely closed, the first and second cores (54, 55) are formed in the cylindrical cavity (FIG. 4: reference numeral 57) in the second mold 52. ) Is inserted to form a cavity 81 that forms a frame. Also, a molten resin flow path (hereinafter also referred to as gate 82) from the runner to the gate is formed. The spool extends in the depth direction in the drawing and communicates with the gate 82.

  6B is an enlarged view of the inside of the circle 200 in FIG. 6A. The shape of the cavity 81 and the state of the mesh material 100 when the mold 50 is closed with reference to FIG. 6B. The position of the first core 54 is fixed to the first mold 51 in the process from the initial state shown in FIG. 4 to the state where the mold 50 is closed, and the upper end 59 of the first core 54 is fixed. It slightly protrudes from the upper surface 56 of the first mold 51. And the cavity 81 in the state which closed the metal mold | die 50 is a bobbin shape. That is, in the cavity 81, a bowl-shaped injection space 83 corresponding to the fall prevention portion is continuously formed on the upper end side of the hollow cylindrical injection space with the vertical direction as an axis, and the bowl-shaped injection space 83 is also formed on the lower end side. An injection space 84 is formed. The mesh material 100 is interposed between the first core 54 and the second core 55. As described above, since the first core 54 protrudes from the upper surface 56 of the first mold 51, the mesh material 100 is stretched at a position above the lower end of the cavity 81. When the mold 50 is further closed, the tension member 70 is housed in the recess 71 in the second mold 52 while supporting the lower surface 103 of the mesh material 100, and movement in the left-right direction is restricted by the pressing mechanism 60. The mesh material 100 in the state is pushed upward by the tension member 70. As a result, a tension corresponding to the height of the tension member 70 is applied to a region of the mesh material 100 that crosses the cavity 81. In other words, in the mold 50 shown here, the tension can be freely adjusted by attaching the tension members 70 having different heights to the first mold 51.

  Next, as shown in FIG. 7, when the molten resin 90 is injected into the cavity 81 of the mold 50 in the closed state via the gate 82, the molten resin 90 is meshed with the mesh material 100 in contact with the cavity 81. Get into. When the resin 90 cools, the resin 90 has a bobbin shape in which a bowl-shaped part (hereinafter also referred to as a lower end flange 92) is formed at the lower end of the frame body 31 having the bowl-shaped fall prevention portion 34 on the upper end side. The molded body 91 is solidified in a shape in which a molded body having a gate shape (hereinafter also referred to as a gate molded body 93) is connected to the side surface of the molded body 91. Further, the position where the mesh material 100 is sandwiched by the first and second cores (54, 55) is further above the upper surface 85 of the lower end flange 92 of the bobbin-shaped molded body. In the region from the lower surface 86 of 92 to the inner peripheral surface 87 of the hollow cylindrical portion of the bobbin-shaped molded body 91, the mesh material 100 is solidified while infiltrating into the eyes. And if the metal mold | die 50 is opened, the inner lid which is a final molded object can be taken out.

  FIG. 8 shows a process of opening the mold 50, FIG. 8 (A) is a view showing the entire mold 50, and FIG. 8 (B) is an enlarged view of the circle 210 in FIG. 8 (A). is there. As shown in FIG. 8A, in a state where the mesh material 100 is sandwiched between the first core 54 and the second core 55, the third gold is fixed to the second core 55. The mold 53 and the first core 54 are moved upward relative to the other molds (51, 52). As a result, the gate molded body 93 moves relative to the bobbin-shaped molded body solidified in the cavity 81 (FIG. 7B, reference numeral 91), and as shown in FIG. (91, 93) are separated. Further, since the second mold 52 slides relatively downward with respect to the first core 54, as shown by the white arrow in the figure, a shearing force is generated in both contact areas, and the lower end flange The mesh material 100 is cut together with 92, and the bobbin-shaped formed body is divided into the frame body 31 and the lower end flange 92. Specifically, a soft and elastic mesh material 100 is bonded to the lower surface 86 of the lower end flange 92 made of a resin that is solidified and easily cut. Therefore, the mesh material 100 is easily cut by the shearing force together with the lower end flange 92. That is, in the inner lid manufacturing method shown here, the mesh material 100 does not extend in the contact area between the first core 54 and the second mold 52, and the net member is not cut off. When the mold 50 is opened, as shown in FIG. 9, the inner lid 3 is taken out while being held by the third mold 53, and the cut gate molded body 93 is also transferred to the third mold 53. The second mold 52 is pulled out while being held. When shifting to the next injection molding step, the gate molded body 93 is removed from the mold 50 and the inner lid 3 is taken out, and the mesh material 100 is wound up in one of the left and right directions. The cut mesh material 100 is cut out in a circle so as to follow the outer shape of the frame 31, and the cut lower end flange 92 is bonded around the cut out circular region 104 as shown in FIG. It becomes.

  As described above, according to the above-described method for manufacturing the inner lid, the inner lid having a structure in which the mesh material is hardly peeled from the frame body can be efficiently manufactured. And a mesh raw material can be easily cut | disconnected along the shape of a frame, and an inner lid can be manufactured with a high yield. If various tension members with different heights are prepared and the first mold is configured so that the tension member can be replaced, the tension of the net stretched on the frame can be freely adjusted. be able to. That is, it can respond flexibly to cosmetics having different viscosities.

=== Other Embodiments ===
In the above-described cosmetic container, the frame constituting the inner lid has a flat hollow cylindrical shape, but may have a rectangular tube shape. It is only necessary that the net is stretched so as to close the lower end side opening of the frame body, and the net member is bonded from the lower end surface of the frame body to the inner peripheral surface on the lower end side. Then, when the inner lid is attached to the container main body, the outer peripheral surface of the cylindrical frame may be in close contact with the inner peripheral surface of the container main body.

1 cosmetic container, 2 outer lid, 3 middle lid, 4 container body, 10 net, 31 frame,
50 mold, 60 pressing mechanism, 70 tension member, 100 mesh material

Claims (6)

A container main body for storing cosmetics made of fluid with an opening above, an outer lid for sealing the opening of the container main body, and an inner lid attached to the container main body,
The inner lid is formed by stretching a net made of a mesh material having elasticity on the lower end side of a flat hollow cylindrical frame with the vertical direction as an axis,
The frame has an outer surface shape that is in close contact with the inner peripheral surface of the container body,
The net has a peripheral edge bonded from the lower end of the frame body to the inner peripheral surface of the frame body, and a resin constituting the frame body is in an eye of the mesh material in an adhesion region with the frame body. Solidified in a state of entering,
A cosmetic container having an inner lid with a net characterized by that. An inner lid that detachably attaches to a cosmetic container that houses cosmetics made of fluid and is sealed by an outer lid,
A net made of a stretchable mesh material is stretched on the lower end side of the hollow cylindrical frame with the vertical axis as the axis,
The net has a peripheral edge bonded from the lower end of the frame body to the inner peripheral surface of the frame body, and a resin constituting the frame body is in an eye of the mesh material in an adhesion region with the frame body. Solidified in a state of entering,
An inner lid with a net of a cosmetic container. A method for manufacturing the netted inner lid according to claim 2,
A plurality of molds that form a cylindrical cavity corresponding to the outer shape of the frame body by relative movement in the vertical direction, and a hollow portion of the frame body that is inserted into the cavity from above and below. Using a first core and a second core of
The mold is closed while the mesh material is bridged in the left-right direction below the cavity, and the first and second cores are inserted into the cavity so that the hollow cylindrical cavity is vertically moved by the mesh material. A mold clamping step,
An injection step of molding a molten resin into a hollow cylindrical cavity formed by the mold clamping step;
A mold release step of opening the mold after the resin injected by the injection step is solidified and taking out the molded body;
Including
In the mold clamping step, a hollow cylindrical cavity having a flange formed at the lower end is formed, and the mesh material is narrowed above the flange portion by the upper surface of the first core and the lower surface of the second core. Hold
In the mold release step, the mold is moved downward relative to the first and second cores in a state where the mesh material is held by the first and second cores, Cutting the mesh material bonded to the flange and the lower surface of the flange at the boundary between the mold and the first core;
A method for producing an inner lid with a net of a cosmetic container.   4. The mold clamping step according to claim 3, wherein in the mold clamping step, the mesh is formed in an annular region that circulates around the cavity inside the restriction region while restricting movement of the mesh material in the bridging direction outside the cavity. A method for manufacturing an inner lid with a net of a cosmetic container, wherein the mesh material is tensioned by pressing the material upward. A mold used in the manufacturing method according to claim 4,
From the bottom to the top, a first mold having the first core, a second mold in which a cylindrical cavity corresponding to the outer shape of the frame is formed, and the second core are fixed The third mold is arranged in this order,
The first mold supports and supports the mesh material, and when the mold is closed, a pressing mechanism for restricting the movement of the mesh material in the left-right direction and a tensioning mechanism for applying tension to the mesh material With members,
The pressing mechanism includes a cylinder portion that is formed by a hole that opens upward and extends in the vertical direction, and a piston portion that is slid upward and downward relative to the cylinder portion while being biased upward.
The tension member is annularly arranged so as to go around the cavity in a region between the cylinder part and the cavity formation region while protruding upward,
The second mold has a recess formed in the lower surface for accommodating the tension member.
A mold characterized by that.   6. The mold according to claim 5, wherein the mold is configured to be detachably replaceable with a plurality of types of the extending members having different heights protruding upward.

Images