JPH09225959A - In-mold molding transfer mold, manufacture of container with handle, and container with handle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To transfer a pattern of a transfer film onto an outer peripheral surface of a container simultaneously when the resin made container with a handle which is composed of a cylindrical container body with a bottom of which an upper end is open, and the handle provided so as to protrude outwards on the outer peripheral surface of the container body, is injection molded. SOLUTION: An in-mold molding transfer mold is composed of a movable mold 4 and a stationary mold 5 which are mutually freely separably provided, and form a handle of a container and an outer peripheral surface, and a pair of slide molds 6, 7 which are freely separably provided in a direction crossing at right angles to mold registering direction of those molds to form an inner surface of the container and its bottom surface. The movable mold is composed of a first movable mold 8 which forms a part of the outer peripheral surface of the container containing a part to which a pattern is transferred, and a second movable mold which is freely separably provided to the first movable mold, clamps a transfer film F between its one side and the first movable mold, and has a mold surface 13a forming the handle on the other side thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin container including a bottomed cylindrical container body having an open upper end, and a handle provided on the outer peripheral surface of the container body so as to project outward. The present invention relates to an in-mold molding transfer mold for injection-molding a container with a handle and simultaneously transferring a pattern of a transfer film onto the outer peripheral surface of the container, a manufacturing method of the container with a handle, and a container with a handle.

[0002]

2. Description of the Related Art In-mold molding transfer in which a transfer foil provided with a pattern printing layer is fed into an injection molding die and a pattern is transferred to the surface of a molded article simultaneously with injection molding has been known. Further, in Japanese Patent Laid-Open No. 4-208423,
There is disclosed an in-mold molding transfer mold for simultaneously injection-molding a columnar resin molded product and transferring a pattern on the outer peripheral surface thereof.

As shown in FIGS. 4 and 5, this mold is provided with a movable mold 16 and a fixed mold 17 which are arranged to face each other and which can be separated from each other, and between the movable mold 16 and the fixed mold 17. A pair of slide molds 18 and 19 which are provided so as to freely come into contact with and separate from each other in the direction orthogonal to the mold clamping direction and which form the outer peripheral surface of the resin molded product.
And a film supply positioning mechanism (not shown) for supplying and positioning the pair of transfer films 20, 20 in front of the mold surfaces of these molds with the pattern printing layers facing each other, the movable mold 16, and the fixed part. The molten resin is transferred into the space formed by the mold 17 and the slide molds 18 and 19 to transfer films 20 and 20.
And a molten resin injection hole 21 for injection injection in a direction orthogonal to the feeding direction.

In order to perform in-mold molding transfer with this mold, first, the transfer films 20 and 20 are fed between the slide molds 18 and 19 in the mold open state, and the slide molds 18 and 19 are supplied.
Close the mold. As shown in FIG. 6, the transfer film 20,
20 is along the mold surfaces of the slide molds 18 and 19, and the upstream and downstream parts of the transfer films 20 and 20 in the feeding direction are in close contact with each other.
Clamped between 9. Then, after the movable mold 16 and the fixed mold 17 are clamped, when molten resin is injected into the mold,
Simultaneously with the molding of the columnar resin molded product, the pattern of the transfer films 20, 20 is transferred onto the outer peripheral surface of the container by the heat of the molten resin.

[0005]

By the way, the mold having the above-mentioned structure has a problem that a container with a handle as shown in FIG. 3 cannot be molded. That is, this container is composed of a bottomed cylindrical container body 2 having an open upper end, and a handle 3 provided on the outer peripheral surface 2a of the container body so as to project outward. When this container is molded with a mold, the handle 3 is located on the mating surface of the slide molds 18, 19 and the mold surface forming the handle 3 is the slide mold 18,
It is formed over 19. Since this mold surface rises at a steep angle from the mating surface, the transfer films 20 and 20 clamped between the slide molds 18 and 19 are difficult to follow along the mold surface, resulting in defective molding or the transfer films 20 and 2.
There is a risk that 0 will be broken. This problem has not been solved so far, and there has not been an in-mold transfer mold for a container with a handle as shown in FIG.

The present invention has been made to solve the above problems, and an object thereof is to provide a bottomed cylindrical container body having an open upper end and an outer peripheral surface of the container body. Provided is a mold for transfer by in-mold molding, which injection-molds a resin-made container with a handle that is provided so as to project toward one side, and at the same time transfers a pattern of a transfer film on the outer peripheral surface of the container To do.

Another object of the present invention is to provide a container with a handle that has a pattern transferred with a good appearance and with high accuracy.

Another object of the present invention is to provide a container with a handle having a three-dimensional pattern.

[0009]

In order to achieve the above object, the first invention of the present application is to provide a bottomed cylindrical container main body having an open upper end, and an outer peripheral surface of the container main body. At the same time as injection-molding a resin container with a handle and a handle provided so as to project toward, at the same time an in-mold molding transfer mold for transferring a pattern from a transfer film onto the outer peripheral surface of the container, A movable die and a fixed die which are provided so as to be able to come into contact with and separate from each other and form a handle and an outer peripheral surface of the container, and between the movable die and the fixed die in a direction orthogonal to a die clamping direction of these dies. A pair of slide molds that form an inner surface and a bottom surface of the container, wherein the movable mold is a first movable mold that forms a part of an outer peripheral surface of the container including a portion to which the pattern is transferred. , The first movable mold between the first movable mold and the fixed mold A mold surface that is provided so as to be able to come in contact with and separate from the first movable mold, and that clamps the transfer film between the first movable mold and the first movable mold, and forms the handle on the side that faces the fixed mold. And a second movable type having a.

In order to prevent the transfer film from being pushed and extended by the slide mold when the mold is clamped, the transfer film is provided on the side of the second movable mold that faces the first movable mold. It is preferable to provide a projection that bends the transfer film along the mold surface of the first movable mold when clamped between the movable film and the first movable mold.

Further, in order to prevent the transfer position of the pattern from being shifted and the transfer film from being wrinkled due to the injection pressure of the resin, the transfer film is provided in the first movable mold to the first movable mold. It is preferable to provide a suction hole for performing vacuum drawing that is in close contact with the mold surface.

A second invention according to the present application comprises a bottomed cylindrical container body having an open upper end, and a handle provided on the outer peripheral surface of the container body so as to project outward. A method for manufacturing a container with a handle made of resin having a pattern transferred from a transfer film on the outer peripheral surface, wherein the movable mold is provided so as to be able to come into contact with and separate from each other, and forms the handle and the outer peripheral surface of the container. A fixed die, and a pair of slide dies that are provided between the movable die and the fixed die so as to come into contact with and separate from each other in a direction orthogonal to the die clamping direction of these dies, and that form an inner surface and a bottom surface of the container. A movable mold forming a part of an outer peripheral surface of the container including a portion to which the pattern is transferred; and a first movable mold between the first movable mold and the fixed mold. The first movable mold is provided so as to be able to come into contact with and separate from the first movable mold on the side facing the first movable mold. A mold comprising a second movable mold having a mold surface for clamping the transfer film between them and having a mold surface on the side opposite to the fixed mold is prepared, and the first movable mold and the second movable mold are prepared. During this period, the transfer film is supplied from one direction with the transfer surface facing the second movable mold side, and either the upstream side or the downstream side in the supply direction of the transfer film is clamped outside the mold. And the other is made movable, the transfer film is made to follow the mold surface of the first movable mold, and the first and second
It is characterized in that the movable die is clamped to clamp the transfer film, and the pair of slide die, movable die and fixed die are clamped to inject and inject the molten resin into the die.

In order to prevent the transfer position of the pattern from being shifted and the transfer film to be wrinkled due to the injection pressure of the resin, the transfer film is evacuated and brought into close contact with the mold surface of the first movable mold. It is preferable to inject the molten resin into the mold while injecting the molten resin.

A third aspect of the present invention comprises a bottomed cylindrical container body having an open upper end, and a handle provided on the outer peripheral surface of the container body so as to project outward. A container with a handle made of resin having a pattern transferred from a transfer film simultaneously with injection molding on the outer peripheral surface,
A convex portion having a shape corresponding to at least a part of the pattern is formed on an outer peripheral surface of the container body, and the pattern is transferred so that a corresponding portion of the pattern matches the convex portion. It is what

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of an in-mold molding transfer mold according to an embodiment of the present invention,
FIG. 2 is a sectional view taken along the line AA ′ of the mold of FIG. 1 when the mold is clamped, and FIG. 3 is a perspective view of the container 1 with a handle molded by the mold.

As shown in FIG. 3, the container 1 with a handle is
It comprises a bottomed cylindrical container body 2 having an open upper end, and an annular handle 3 provided on the outer peripheral surface 2a of the container body 2 so as to project outward. On the front side of the outer peripheral surface 2a of the container body 2, a convex portion 2b having a shape corresponding to a pattern of a transfer film described later is formed. In addition, the convex part 2
b may have a shape corresponding to the whole pattern or a shape corresponding to a part of the pattern.

As shown in FIGS. 1 and 2, the mold for molding the container 1 has mating surfaces 4a and 5a facing each other, and is supported by a plurality of guide rods (not shown), and the mating surface 4 is formed.
a movable die 4 and a fixed die 5 that are brought into contact with and separated from each other in the horizontal direction (direction of arrow B) orthogonal to a and 5a, and are provided between the movable die 4 and the fixed die 5 and are orthogonal to the die clamping direction of these die. It is composed of a pair of slide molds 6 and 7 which are brought into contact with and separated from each other in the horizontal direction (direction of arrow C).

The movable die 4 is for forming a front surface side (a side to which a pattern is transferred) of the container 1 which is bisected by a vertical surface which vertically cuts the handle 3. 1 movable type 8
And a fixed mold 5 and a second movable mold 9 supported by the first movable mold 8 via a plurality of guide pins 9a so as to be freely contactable and separable. First movable mold 8 and second movable mold 9
In between, a web-like transfer film F provided with a pattern printing layer (not shown) at a predetermined pitch by a film supply device (not shown) is directed vertically from above to below (in the direction of arrow D). Supplied.

The transfer film F is formed by sequentially laminating a release layer, a pattern printing layer and an adhesive layer on a base film made of PET or the like, and is set so that the adhesive layer side faces the second movable mold 9. To be done. Marks (not shown) for registering are provided on both side edges of the transfer film F and above and below the pattern printing layer, and the transfer film F is detected in the width direction by detecting the marks with an optical sensor of the film supply device. And, it is designed to be positioned in the supply direction.

The first movable mold 8 has a semi-cylindrical recess 10 on the surface facing the second movable mold 9 and having a mold surface 10a forming a part of the outer peripheral surface 2a of the container body 2 including the convex portion 2b. Have The first movable mold 8 has a pair of suction holes 11 and 11 (see FIG. 2), one end of which is opened to the mold surface 10a and the other end of which is connected to a vacuum suction device (not shown). .

The second movable mold 9 has a rectangular hole 12 through which the slide molds 6 and 7 pass, and the upper and lower surfaces of the hole 12 form a part of the outer peripheral surface 2a of the container body 2. Is a face. On a surface (a mating surface) of the second movable mold 9 facing the fixed mold 5, the mold surface 1 forming the front surface side of the handle 3 is formed.
3a are formed. On the other hand, the mold surface 1 of the fixed mold 5
3a is aligned with the mold surface 13a, and the handle 3
A mold surface 13b that forms the rear surface side is formed. Further, on the surface of the second movable die 9 facing the first movable die 8, plate-shaped projections 14, 14 having a shape corresponding to the cross-sectional shape of the recess 10 of the first movable die 8 are provided on both sides of the hole 12. Has been formed,
When the transfer film F is clamped between the second movable mold 9 and the first movable mold 8, these projections 14 and 14 are embedded in the recess 10 to bend the transfer film F along the mold surface 10a. (See Figure 2).

The slide die 6 has a cylindrical die surface 6a forming the inner surface of the container 1 at the tip, and the slide die 7 has a circular die surface 7a forming the bottom surface of the container 1 at the tip. When the slide molds 6, 7, the movable mold 4, and the fixed mold 5 are clamped, a space 15 having the shape of the container 1 is formed as shown in FIG.

Next, a method of performing in-mold molding transfer using this mold will be described. With the movable mold 4, the solid mold 5, and the slide molds 6 and 7 opened, the transfer film F is moved by the film supply device to the first movable mold 8 and the second movable mold 9.
Is supplied and positioned between. Then, a part of the transfer film F on the downstream side of the mold is clamped by a clamp mechanism (not shown) provided in the film supply device. The upstream side is movable so that tension is not applied to the transfer film F during clamping. Further, the upstream side may be clamped so that the downstream side is movable.

Next, the second movable die 9 moves to the first movable die 8 side, the projections 14 and 14 enter the concave portion 10, and the transfer film F is bent. When the projections 14, 14 are embedded in the recess 10, the transfer film F is clamped along the mold surface 10a of the recess 10 and between the first movable mold 8 and the second movable mold 9. Then, the vacuum suction device evacuates the inside of the suction holes 11, 11 to bring the transfer film F into close contact with the mold surface 10a. The suction of the transfer film F by the vacuum suction device is performed by the container 1
It is performed until the molding of is completed.

Next, the slide molds 6 and 7 approach each other and are clamped. Then, the movable die 4 moves toward the fixed die 5, the slide dies 6 and 7 enter into the holes 12 of the second movable die 9, and the movable die 4 is clamped to the fixed die 5 (Fig. 2). In this state, the molten resin is injected into the space 15 from a molten resin injection port (not shown) provided in the fixed mold 5 to mold the container 1. At this time, the pattern print layer of the transfer film F is transferred onto the convex portion 2b of the outer peripheral surface 2a of the container 1 by the heat of the molten resin.

When the in-mold molding transfer for one piece is completed in this way, the mold is opened, the suction by the vacuum suction device is stopped, and the molded product is taken out from the mold by the conveying device (not shown), and the film supply device Thus, the transfer film F is fed by one pitch. And the above-mentioned process is repeated and the container 1 is continuously molded.

In the present embodiment, the case of a cylindrical container has been described, but the present invention can also be applied to a rectangular tube-shaped container.

[0028]

According to the first aspect of the present invention, the movable die 4 includes the first movable die 8 which forms a part of the outer peripheral surface 2a of the container 1 including the portion 2b to which the pattern is transferred, and the first movable die 8. The first movable mold 8 is provided between the first movable mold 8 and the fixed mold 5 so as to be able to come into contact with and separate from the first movable mold 8, and the transfer film F is clamped between the first movable mold 8 and the first movable mold 8 while the other side is also clamped. On the handle 3 of the container 1
Since the transfer film F is not in contact with the mold surface 13a forming the handle 3, the transfer film F may be broken or the second movable mold 9 having the mold surface 13a forming the transfer film F may be broken. It is possible to perform in-mold molding and transfer of the container with a handle without causing the molding defect to occur along the mold surface.

According to the second aspect of the invention, the first movable die 9 is provided with the first movable die 9 on the side facing the first movable die 8.
By providing the projection 14 that bends the transfer film F along the mold surface 10a of the first movable mold 8 when the transfer film F is clamped between the movable mold 8 and the movable mold 8, the transfer film F is clamped when the mold is clamped. Is not pushed by the slide dies 6 and 7 to extend, so that the transfer position of the pattern does not shift and the transfer film F does not wrinkle. Therefore, it is possible to obtain a container with a handle in which the design is transferred with good appearance and high precision registration.

According to the third aspect of the present invention, the first movable die 8 is provided with the suction hole 11 for supplying the transfer film F to the die surface 10a for vacuuming. In addition, since the transfer position of the pattern does not shift and the transfer film F does not wrinkle due to the injection pressure of the resin during molding, it is possible to obtain a product of better quality.

According to the fourth aspect of the invention, the transfer film F is fed from one direction between the first movable die 8 and the second movable die 9 and is upstream of the feeding direction in the transfer film F outside the die. The transfer film F is clamped on one side or the downstream side and the other is made movable, and the transfer film F is moved along the mold surface 10a of the first movable mold 8 and the first and second movable molds are clamped. Is clamped, the pair of slide molds 6, 7, the movable mold 4, and the fixed mold 5 are clamped, and the molten resin is injected and injected into the space 15, so that the transfer film F slides when the mold is clamped. It does not extend by being pushed by 7, and the transfer position of the pattern does not shift or the transfer film F does not wrinkle. Therefore, it is possible to obtain a container with a handle in which the design is transferred with good appearance and high precision registration.

Further, according to the invention of claim 5, the transfer film F is evacuated to form the mold surface 10 of the first movable mold 8.
By injecting and injecting the molten resin into the space 15 while closely contacting with a, the transfer position of the pattern does not shift and the transfer film F does not wrinkle due to the injection pressure of the resin. It is possible to obtain a container with a handle.

According to the sixth aspect of the present invention, the convex portion 2b having a shape corresponding to at least a part of the pattern is formed on the outer peripheral surface 2a of the container body 2, and the convex portion 2b corresponds to the pattern. Since the pattern is transferred so that the two coincide with each other, a container with a handle having a three-dimensional pattern and high commercial value can be obtained.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an in-mold molding transfer mold that is an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line AA ′ in the state where the mold of FIG. 1 is clamped.

FIG. 3 is a perspective view of a container 1 with a handle formed by the mold of the present embodiment.

FIG. 4 is a cross-sectional view of a conventional in-mold molding transfer mold.

5 is a cross-sectional view taken along the line EE ′ showing a state where the slide die of the die shown in FIG. 4 is opened.

FIG. 6 is a cross-sectional view taken along the line EE ′ showing a state where the slide die of the die of FIG. 4 is closed.

[Explanation of symbols]

 1 Container with Handle 2 Container Body 2a Outer Surface 3 Handle 4 Movable Type 5 Fixed Type 6, 7 Sliding Type 8 First Movable Type 9 Second Movable Type

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location B65D 23/10 B65D 23/10 // B29L 22:00

Claims (6)

[Claims] 1. A bottomed tubular container body having an open upper end,
A container with a handle made of resin and a handle provided so as to project outward on the outer peripheral surface of the container body is injection molded, and at the same time, a pattern is transferred from the transfer film onto the outer peripheral surface of the container. A mold for transferring in-mold molding, a movable mold and a fixed mold which are provided so as to be able to come into contact with and separate from each other and form a handle and an outer peripheral surface of the container, and molds of these molds between the movable mold and the fixed mold. It is provided in a direction orthogonal to the tightening direction so as to be freely contactable and separable, and comprises a pair of slide molds forming an inner surface and a bottom surface of the container, wherein the movable mold has an outer peripheral surface of the container including a portion to which the pattern is transferred. A first movable die that forms a part of the first movable die, and a first movable die that is provided between the first movable die and the fixed die so that the first movable die can come into contact with and separate from the first movable die. When the transfer film is clamped between the first movable mold and The fixed mold and the in-mold transfer mold, characterized in that and a second movable mold having a mold surface for forming the handle on the opposite side also. 2. When the transfer film is clamped between the first movable mold and the side of the second movable mold that faces the first movable mold, the first transfer film is provided between the transfer film and the first movable mold.
The in-mold molding transfer mold according to claim 1, further comprising a protrusion configured to bend along the mold surface of the movable mold. 3. The first movable die is provided with a suction hole for performing vacuuming to bring the transfer film into close contact with a die surface of the first movable die. A mold for in-mold molding and transfer according to. 4. A bottomed cylindrical container body having an open upper end,
A method of manufacturing a container with a handle made of a resin, comprising a handle provided on an outer peripheral surface of the container main body so as to project outward, and having a pattern transferred from a transfer film on the outer peripheral surface. And a movable die and a fixed die that are provided so as to be able to come into contact with and separate from each other and that form the handle and the outer peripheral surface of the container, and between the movable die and the fixed die in a direction orthogonal to the mold clamping direction of these dies. A pair of slide molds which are freely provided and form an inner surface and a bottom surface of the container, wherein the movable mold forms a part of an outer peripheral surface of the container including a portion to which the pattern is transferred.
A movable die, and a movable die, which is provided between the first movable die and the fixed die so as to be movable toward and away from the first movable die, and between the movable die and the first movable die on the side facing the first movable die. A mold including a second movable mold that clamps the transfer film and has a mold surface on the side facing the fixed mold to form the handle is provided between the first movable mold and the second movable mold. The transfer film is supplied from one direction with the transfer surface facing the second movable mold side, and either the upstream side or the downstream side in the supply direction of the transfer film is clamped outside the mold and the other side is clamped. The transfer film is movable, the transfer film is moved along the mold surface of the first movable mold, and the first and second movable molds are clamped to clamp the transfer film. The mold is clamped and melted in the mold. A method of manufacturing a container with a handle, comprising injecting a molten resin by injection. 5. The manufacturing of a container with a handle according to claim 4, wherein a molten resin is injected and injected into the mold while the transfer film is brought into close contact with the mold surface of the first movable mold by vacuuming. Method. 6. A bottomed cylindrical container body having an open upper end,
A container provided with a handle, which is provided on the outer peripheral surface of the container main body so as to project outward, and has a pattern transferred from a transfer film simultaneously with injection molding on the outer peripheral surface. There, a convex portion having a shape corresponding to at least a part of the pattern is formed on the outer peripheral surface of the container body, and the pattern is transferred so that the corresponding portion of the pattern matches the convex portion. A container with a handle characterized in that