JPH04212312A - Manufacture of compact vessel net - Google Patents

Abstract

PURPOSE:To cleanly cut a part of net protruded to the periphery of a frame body, in a compact vessel net formed by extending and providing a net on a frame body made of synthetic resin. CONSTITUTION:In the periphery of a frame body 1 of synthetic resin, a cutting margin 1a is provided in advance, and the frame body is superposed on a net 2 whose area is larger than the inside area of the frame body containing the cutting margin and the frame body is stuck to the cutting margin. In addition to the frame body and the net, a synthetic resin film 3 is added, and it is also allowable that three parts are stuck integrally by superposing the frame body, the net and the film. In such a state, the net is cut together with the cutting margin.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a net to be placed on a cosmetic in a compact container in which the top surface of the cosmetic is covered with the net and the cosmetic is wiped from the mesh.

0002

[Prior Art] Conventionally, a container has been provided with a container body, an inner tray container which is attached to the container body and contains a cosmetic therein, and a net that covers the upper surface of the inner tray container. A compact container for wiping off cosmetics and applying makeup is provided.

[0003] In this type of container, a structure in which the net is stretched over a frame is known.

0004

[Problems to be Solved by the Invention] By the way, nets are manufactured by attaching a net larger than the frame to a frame, and then cutting off the net that protrudes around the frame.

[0005] However, in such a manufacturing method, the cutting edge around the net cannot be cut neatly, and this tendency is particularly large when the net has elasticity.

The present invention solves the above-mentioned problems and provides a method for manufacturing a net for a compact container that can clean the cut edges of the net, and also provides a method for forming a frame, adhering the frame and the net, and cutting the net. An object of the present invention is to provide a method for manufacturing a net for a compact container that can be produced using the same machine.

[0007]

[Means for Solving the Problems] In order to solve the above problems, the present invention employs the following means.

That is, the present invention is a method for manufacturing a net for a compact container, which is made by stretching a net over a frame made of synthetic resin. This method of manufacturing a net for a compact container is characterized in that a net having an area larger than the inner area of the frame is superimposed on the frame and adhered to the frame and the cut margin, and then the net is cut together with the cut margin.

[0009] Here, a synthetic resin film is added in addition to the frame and the net, and after the frame, the net, and the synthetic resin film are stacked and bonded together, the net is cut along with the cutting allowance. You can also do this.

Furthermore, in this case, a synthetic resin film having an adhesive layer laminated on one surface can be used as the synthetic resin film. Then, after attaching the net to this adhesive layer in a removable manner, a frame body is laminated on the net side, and this frame body and
After the net and the synthetic resin film are bonded together, the net is cut along with the cutting margin.

[0011] The frame and the net are preferably bonded by welding by melting a synthetic resin. The welding can be carried out by injection molding the frame onto the net, thereby simultaneously molding the frame and bonding the net and the frame by melting. That is, a net or a net attached to a film is set in advance in a mold for molding the frame, and then molten synthetic resin is injected and filled into the cavity for molding the frame. The injected and filled molten resin is integrated with the net while molding the frame so as to enclose the net facing the frame cavity. Then, the cutting allowance and the net are trimmed in the mold.

[0012] Furthermore, the net may be made of the same material as the frame, or may be made of a different material. Any material that can be used for injection molding may be used as the same material. Another material is a net-like yarn made of one or more synthetic resin threads wound spirally around one or more stretchable threads such as polyurethane threads. I can give an example of a net. Examples of the synthetic resin thread to be spirally wound include nylon thread and polyester thread. The net may be woven in any manner as long as it can form a mesh through which the cosmetic material can pass.

[0013]

[Operation] In the present invention, the net is cut along with the cutting margin, so that the cut edges of the net are clean.

[0014] Since the net is bonded to the frame and the cutting margin, the constituent threads of the net are supported and fixed to the cutting margin, and the constituent threads of the net can be cut sharply without scattering during cutting. In particular, when heat welding, the threads that make up the net are buried in the cutting margin and become integrated, resulting in a more even cut edge.

[0015]

Embodiments Hereinafter, embodiments of the present invention will be explained based on the drawings.

<Example 1> In carrying out the present invention,
A frame 1, an elastic net 2, and a synthetic resin film 3 are prepared.

The frame 1 is made of ABS resin and is molded into a circular shape as shown in FIG. 1, and as shown in FIG. It is provided integrally with 1.

The elastic net 2 is a net made by weaving threads 2a in which a plurality of synthetic resin threads are spirally wound around two or three polyurethane threads.

The film 3 is made of polyethylene terephthalate and has a thickness of 38 μm. An adhesive layer made of adhesive is provided on one side of the film 3.

[0020] A cutting allowance 1a integral with the frame 1 is provided around the frame 1.
, overlap the elastic net 2 with an area larger than the inner area of the frame 1 including the cutting allowance 1a on the frame 1, apply an annular welding blade from the elastic net 2 side, and separate the frame 1 and the cutting allowance 1a. The elastic net 2 was thermally welded to the ends, and as shown in FIG. 2, the elastic net 2 was cut along with the cutting margin 1a using a cutter 4.

[0021] At the cutting edges, the constituent threads of the elastic net 2 were not dispersed and were neatly cut.

<Example 2> In addition to the frame 1 and the elastic net 2, a synthetic resin film 3 was used.

First, the elastic net 2 is attached to a synthetic resin film 3.
Lay it on the adhesive layer and adhere it. The degree of adhesion is such that the film 3 can be peeled off from the elastic net 2 later.

Then, the frame 1 was stacked on the elastic net 2 side, and a ring-shaped welding blade was applied from the film 3 side to bond at least the frame 1, the cut margin 1a, and the elastic net 2 to each other by heat welding. . As a result, the frame 1, the cutting margin 1a, the stretchable net 2, and the film 3 are integrated, so that the stretchable net 2 and the film 3 are cut together with the cutting margin 1a using a cutter. The peripheral cut edge of the obtained net 2 could be cut sharply and had a clean finish.

[0025] Also, in this case, since the stretchable net 2 is pasted on the film 3, the work of stretching the stretchable net 2 on the frame 1 becomes extremely easy.

[0026] Then, in the above method, a net with a film is formed, and this net is placed on the cosmetic in a compact container with the film 3 facing up. film 3
acts as a virgin seal to indicate that the cosmetic has not been used, and when the film 3 is pressed during initial use, the stretchable net 2 stretches downward, while the periphery of the film 3, which does not stretch as much as the stretchable net 2, stretches downward. Because it's drawn inward,
The periphery of the film 3 is peeled off from the frame 1. Therefore, the film 3 can be peeled off simply by pressing the film 3 with a finger.

<Embodiment 3> The above method can also be carried out simultaneously with the molding of the frame 1 in a mold for molding the frame 1. The explanation will be given below based on FIGS. 3 to 9.

In this embodiment, when forming the frame 1, the net 2 is
It is insert molded into one piece. As the net 2, a stretchable net integrated with a film as described above may be used, but here, a net 2 knitted from non-stretchable synthetic resin threads was used.

In insert molding, the frame including the cut allowance is welded by injection molding onto a net having an area larger than the inner area of the frame including the cut allowance.

That is, a net fixed between two cylinders is sandwiched between two piston molds that are slidably fitted into each cylinder, and the net is inserted into a ring-shaped cavity provided at the outer edge of at least one end of the piston. In this method, synthetic resin is injection molded into the cavity, and a piston is moved along the cylinder to cut the net together with the cutting margin, which is a part of the frame molded inside the cavity.

The device used to carry out the present invention consists of two cylinders 11 and 12 forming a pair, each cylinder 11 and 12.
two pistons 13 that are slidably fitted into each other;
This is a mold device having 14.

[0032] One piston 13 has a ring-shaped cavity 21 formed at its end peripheral edge on the side that contacts the other piston 14. Further, a resin injection port 22 connected to a resin extrusion port of an injection molding machine (not shown) is provided on the end surface of one of the pistons 13, and a runner 23 is provided for guiding the resin from the injection port 22 toward the cavity 21. It is being

Furthermore, the other piston 14 has a flat end on the side that contacts the one piston 13. Further, an ejector rod 15 for ejecting the molded product is built into the center of the other piston 14, and is configured to be ejected from the flat surface by air pressure.

An example of the molding method of the present invention using this mold apparatus will be explained below. In this example, the cylinder 11 is fixed, the other cylinder 12, pistons 13, 14
was moved and molded.

First, with the net 2 sandwiched between the cylinders 11 and 12, and the net 2 sandwiched between the pistons 13 and 14, synthetic resin is injected and filled into the cavity 21 formed between the pistons 13 and 14 to form a frame. 1 was molded, and at the same time, the frame 1 and the net 2 were welded together (Fig. 3). The frame body 1 formed here has the cutting allowance 1a as described above.

Next, after the frame 1 is cooled and solidified, the piston 13 is retracted to open the mold (FIG. 4), and the piston 14 is
After retracting from the net 2 (Fig. 5), the piston 14 is advanced along the cylinders 11 and 12, and the net 2
was cut between the cylinders 11, 12 and the edge of the piston 4 together with the cutting allowance 1a of the frame 1 (FIG. 6).

The cut frame 1 and net 2 are removed from the end surface of the piston 11 by protruding the ejector rod 15 of the piston 11 (FIG. 7).

Next, the cylinders 13 and 14 are opened and the net 2 is moved between the cylinders 13 and 14 (FIG. 8).
By repeating the above steps, the net 2 having the frame 1 is sequentially manufactured.

The cutting of the net can also be carried out by moving the net 2 between the pistons 13 and 14 inside the cylinders 13 and 14, making it extremely easy to manufacture. The frame 1 is firmly welded to the net 2, and the cut edges of the net 2 are cut cleanly.

<Embodiment 4> Embodiment 4 will be explained based on FIGS. 9 to 14.

In this example, the same mold as that used in Example 3 is used. First, with the net 2 sandwiched between the cylinders 11 and 12, and the net 2 sandwiched between the pistons 13 and 14, a synthetic resin is injected and filled into the cavity 21 formed between the pistons 13 and 14, thereby forming the frame 1. At the same time, the frame 1 and the net 2 were welded together (FIG. 9). The frame body 1 formed here has the cutting allowance 1a as described above.

Next, after the frame 1 is cooled and solidified, the piston 14 is retracted (FIG. 10), and the piston 14 is attached to the net 2.
separated from. Then, the piston 14 is
The pistons 13 and 14 were moved in the cylinders 11 and 12 together, with the net 2 and the frame 1 being held between them even after they came into contact with the piston 13. As a result, the net 2 was cut between the cylinders 11, 12 and the edge of the piston 4 together with the cut margin 1a of the frame 1 (FIG. 11).

In this way, since the cutting margin 1a is cut with the net 2 and the frame 1 held between the two pistons 13 and 14, the net 2 and the frame 1 do not shift in position during cutting. Can be cut reliably.

Thereafter, the piston 13 is retracted to open the mold (FIG. 12). Here, the cut frame 1 and net 2 are exposed to the outside together with the piston 13 while being held on the end surface of the cylinder 13. .

Then, the frame body 1 with the net is dropped from the end face of the cylinder 13 using a robot arm or the like (not shown) (FIG. 13). Although not shown, an ejector rod similar to that provided on the cylinder 14 may be provided on the cylinder 13 side, and the frame body 1 with the net may be removed from the cylinder 13 using the ejector rod.

Next, the cylinders 13 and 14 are opened, and the net 2 is moved between the cylinders 13 and 14 (see FIG. 14).
), the net 2 having the frame 1 is sequentially manufactured by repeating the above steps.

[0047]

[Effects of the Invention] Since the method of the present invention is based on the above steps, it is possible to achieve a fine finish on the cut edges of nets, especially stretchable nets.

[Brief explanation of the drawing]

[Fig. 1] Plan view showing an example of a frame body

[Figure 2] Cross-sectional view centered on the frame part

[Fig. 3] A diagram showing the first step of manufacturing process example 1 of the present invention using a mold device.

FIG. 4 is a diagram showing the second step of manufacturing process example 1 of the present invention using a mold device.

[Fig. 5] A diagram showing the third step of manufacturing process example 1 of the present invention using a mold device.

FIG. 6 is a diagram showing the fourth step of manufacturing process example 1 of the present invention using a mold device.

FIG. 7 is a diagram showing the fifth step of manufacturing process example 1 of the present invention using a mold device.

FIG. 8 is a diagram showing the sixth step of manufacturing process example 1 of the present invention using a mold device.

FIG. 9 is a diagram showing the first step of manufacturing process example 2 of the present invention using a mold device.

FIG. 10 is a diagram showing the second step of manufacturing process example 2 of the present invention using a mold device.

FIG. 11 is a diagram showing the third step of manufacturing process example 2 of the present invention using a mold device.

FIG. 12 is a diagram showing the fourth step of manufacturing process example 2 of the present invention using a mold device.

FIG. 13 is a diagram showing the fifth step of manufacturing process example 2 of the present invention using a mold device.

FIG. 14 is a diagram showing the sixth step of manufacturing process example 2 of the present invention using a mold device.

[Explanation of symbols]

1...Frame body 1a...Cut allowance 2...Net 3...Film 4...Cutter 11, 12... cylinder 13, 14... Piston 15... protruding rod 21...Cavity 22...Resin injection port 23...Runner

Claims (5)

[Claims] [Claim 1] A method for manufacturing a net for a compact container, which consists of stretching a net over a frame made of synthetic resin, in which a cutting allowance is integrally provided around the frame, and the inner area of the frame including the cutting allowance is A method for producing a net for a compact container, which comprises stacking a larger area net on a frame body, gluing it to the frame body and the cutting margin, and then cutting the elastic net together with the cutting margin. 2. The production of a net for a compact container according to claim 1, wherein the frame, the net, and the synthetic resin film are stacked and bonded together, and then the net is cut along with a cutting margin. Method. 3. The synthetic resin film has an adhesive layer laminated on one side, and the net is releasably attached to the adhesive layer, and then a frame is laminated on the net side, and the frame and 3. The method of manufacturing a net for compact containers according to claim 2, wherein the net and the synthetic resin film are bonded together. 4. The frame including the cutting allowance is welded by injection molding onto a net having an area larger than the inner area of the frame including the cutting allowance.
Or the manufacturing method of the net for compact containers according to claim 3. 5. A net fixed between two cylinders is sandwiched between two pistons, which are two molds, which are slidably fitted into each cylinder, and the net is placed in a ring-shaped cavity provided at the outer edge of at least one end of the piston. Claim 4, characterized in that the net is cut by injection molding a synthetic resin and moving a piston along the cylinder, together with a cutting margin that is a part of the frame molded within the cavity.
A method of manufacturing the described compact container net.