KR101789008B1 - A manufacturing method of a pressure container comprising in-mold label and three-dimensional shape - Google Patents

Abstract

The present invention provides a method of manufacturing a pressure vessel having an in-mold label that forms at least a part of an outer surface of a pressure vessel three-dimensionally, and can pay attention to a person who looks at it by deforming the label so that a three- It has its purpose. To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, there is provided a method of manufacturing a container, comprising: heating a mold on which a three- Opening the mold; Attaching a label to the inner surface of the mold, wherein the label is attached to the inner surface of the mold so that at least a part of the label covers the three-dimensional groove; Placing a preform of the container inside the cavity of the mold; Closing the mold and injecting air into the preform at a predetermined range of pressure through the first route to expand the preform; The label attached to the surface of the preform is deformed into a three-dimensional shape corresponding to the three-dimensional groove by the air pressure together with the surface of the preform to be expanded, with the expanded preform and the label adhering to each other; Injecting cooling air into the interior of the preform through a second route in a preform which is expanded and deformed into a container form; Separating the molds from each other, separating the molds from each other, separating the container having the three-dimensional shape and the deformed label attached thereto from the mold, and a method of manufacturing the pressure container having the in-mold label and the three-dimensional shape.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure vessel having an in-mold label and a three-dimensional shape,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a pressure vessel having an in-mold label, and more particularly, to a method of manufacturing a pressure vessel in which a three-dimensional shape can be formed on the outer circumferential surface of a pressure vessel subjected to in- will be.

A container that can withstand internal pressure to contain fluid with internal pressure, such as carbonated beverages, is called a pressure vessel.

In the case of such a pressure vessel, a preform is usually prepared, and a container is manufactured through a blowing operation in which air is further injected into the preform.

On the other hand, in order to attach the label to the pressure vessel, after the label is attached to the inside of the mold, the preform is inflated to naturally adhere to the surface of the container, which is called an in-mold labeling method.

However, in the case of manufacturing a pressure vessel with a label attached thereto by using the in-mold labeling method, the outer peripheral surface of the pressure vessel is planar as in Japanese Unexamined Patent Application Publication No. 2006-276646. When a product is released using such a pressure vessel, It was not possible to come out of the outer shape design, so there was a limit to attract consumers' attention.

In the past, when a three-dimensional shape was to be realized in a plastic container, a three-dimensional shape was formed on the outer surface of the container, a label was placed on the outer surface of the container, And the boundary between the boundary and the three-dimensional part do not fit each other, and it is difficult to produce a container in which the aesthetics can be properly implemented.

The present invention has been made to solve such a problem, and it is an object of the present invention to provide an in-mold label which can form at least a part of an outer surface of a pressure vessel three-dimensionally and can change the label so that a three- And a method of manufacturing a pressure vessel.

In order to achieve the above object, the present invention provides a method of manufacturing a container, comprising the steps of: heating a mold on which a three-dimensional groove corresponding to a three- Attaching a label to the inner surface of the mold so that at least a part of the label covers the three-dimensional groove; Placing a preform of the container inside the cavity of the mold; Closing the mold and injecting air into the preform at a predetermined range of pressure through the first route to expand the preform; The label attached to the surface of the preform is deformed into a three-dimensional shape corresponding to the three-dimensional groove by the air pressure together with the surface of the preform to be expanded, with the expanded preform and the label adhering to each other; Injecting cooling air into the interior of the preform through a second route in a preform which is expanded and deformed into a container form; Separating the molds from each other, separating the molds from each other, separating the container having the three-dimensional shape and the deformed label attached thereto from the mold, and a method of manufacturing the pressure container having the in-mold label and the three-dimensional shape.

The label includes a substrate portion, an adhesive layer which is provided on the inner surface of the substrate portion and fused at a predetermined temperature or more, and a pattern or a figure or a letter or number corresponding to the projected or recessed portion of the three- Wherein the step of attaching the label to the inner surface of the mold includes a step of attaching the label to the mold such that the print layer is aligned with the three-dimensional groove.

 Inflating the preform further comprises injecting air into the first pressure range and thereafter injecting air with a pressure in a second pressure range higher than the first pressure range.

The first route is realized by an air supply port which can be raised and lowered and is arranged at an inlet of the preform and the second route is provided by a pipe of an air injection device .

The step of heating the mold is characterized in that the mold is heated such that the temperature of the mold is maintained within a temperature range of 40 to 80 占 폚.

Heating a mold on which a three-dimensional groove corresponding to a three-dimensional shape to be formed on the surface of the container is formed; Opening the mold;

Attaching a label to the inner surface of the mold, wherein the label is attached to the inner surface of the mold so that at least a part of the label covers the three-dimensional groove;

Placing a preform of the container inside the cavity of the mold;

Closing the mold and inflating the preform by injecting air into the preform at a predetermined pressure using an air injection device located outside the mold;

The label attached to the surface of the preform is deformed into a three-dimensional shape corresponding to the three-dimensional groove by the air pressure together with the surface of the preform to be expanded, with the expanded preform and the label adhering to each other;

Injecting cooling air into the container formed by the expanded preform, separating the molds from each other, and separating the container having the three-dimensional shape and the deformed label attached thereto from the mold.

The step of expanding the preform may be implemented by injecting air through an air supply port that can be disposed at the inlet of the preform and can supply air into the preform,

The step of cooling the preform is implemented by injecting cooling air into the preform through a pipe of an air injection device insertable into the preform.

 Expanding the preform comprises: Injecting air in a first pressure range;

Injecting air at a pressure in a second pressure range higher than the first pressure range after the air injection is completed in the first pressure range.

According to the present invention, since the three-dimensional shape, color, and texture can be imparted to the pressure vessel, it is possible to enhance the advertising and promoting effect of the product using such pressure vessel.

Various types of patterns, letters, patterns, numbers, and pictures can be formed in the mold cavity to realize a variety of three-dimensional shapes.

In the case of the conventional three-dimensional shape, it is inevitable to use the heat shrinking method or the direct attaching method. However, the three-dimensional shape portion of the container and the printed surface (letter, figure, pattern, The boundary did not fit.

However, in the case of the present invention, a three-dimensional shape is formed by a large force through an in-mold label and a blowing method, and a corresponding portion of the label is closely adhered to the three-dimensional shape portion, thereby providing a sense of beauty and placement accuracy. There are advantages.

In the present invention, rather than cooling the mold during the blowing process for forming the container, the mold is rather heated.

This complements the low latent heat of the PET preform, so that the label adheres to the three-dimensional shape more firmly and its attachment state becomes stronger.

In the present invention, air can be injected while inserting the pipe into the preform, so that the blowing pressure distribution can be made evenly throughout the expanded preform.

It is possible to inject air for cooling as well as air for blowing to the pipe so that the container can be cooled inside the container rather than being cooled from the outside.

Therefore, even if the mold is heated, the cooling process of the container can be performed.

From this point of view, heating of the mold compensates for the low latent heat of the PET so that the labeling of the three-dimensional shape is robust, while preventing the productivity of the container from deteriorating by introducing a separate container cooling process.

1 is a perspective view of a pressure vessel having an in-mold label in which three-dimensional characters are formed.
FIG. 2 is a perspective view showing the pressure vessel body and the label separated from each other in the pressure vessel of FIG. 1. FIG.
3 is a side view of the pressure vessel of Fig.
4 is a top cross-sectional view of the pressure vessel of Fig.
Fig. 5 is a plan sectional view of the pressure vessel of Fig. 1 with the label removed. Fig.
6 is a perspective view of a pressure vessel having an in-mold label in which a stereoscopic image is formed.
7 is a front view of the pressure vessel of Fig.
8 is a side view of the pressure vessel of Fig.
FIGS. 9 to 10 illustrate a procedure for manufacturing a pressure vessel having an in-mold label having a solid body according to the present invention.
11 is a flowchart of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings.

However, it is to be understood that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It is intended that the disclosure of the present invention be limited only by the terms of the appended claims.

Also, terms used herein are for the purpose of illustrating embodiments and are not intended to limit the invention.

In the present specification, the singular form includes plural forms unless otherwise specified in the specification. &Quot; comprises "and / or" comprising "used in the specification do not exclude the presence or addition of components other than the components mentioned.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1, the pressure vessel 100 having the in-mold label 200 according to the present invention includes an inlet portion 110 and a body portion 120 having a larger diameter than the inlet portion 110 .

A label 200 is attached to the outer circumferential surface of the body 120 and a step 121 is formed at the edge of the label 200 with in-mold labeling.

This is because a step is formed between a portion to which the label 200 is attached and a portion to which the label 200 is not attached while the label 200 is in contact with the label 200 during the expansion process of the pressure container 100, The portion where the label 200 is attached is slightly protruded from the portion where the label 200 is attached.

The label 200 is disposed on the outer surface of the pressure vessel 100 on the outer surface of the base 201 and is located on the outer surface of the solid part 122 A printing layer 202 is formed which is protruded or recessed to form a three-dimensional sensation.

An adhesive layer 203 (see FIG. 5) is formed on the rear surface of the substrate portion 201. The adhesive layer 203 is fused to the surface of the expanded preform (preform for forming the pressure vessel) having a high surface temperature during the in-mold labeling process The label 200 is attached to the surface of the pressure vessel 100.

When the label 200 is attached to the body 120 of the pressure vessel 100, the printed layer 202 of the label 200 is attached to the body 122 formed on the body surface of the pressure vessel 100 The printed layer 202 is seen to be pitted to the outer side.

Particularly, when the print layer 202 is a reflective layer or a hologram layer, which is noticeable, the color of the print layer 202 varies depending on the direction of the viewer's eyes. Therefore, attention can be paid to the attention or gaze of the viewer .

The shaded portion in FIG. 1 is a portion of the print layer 202 that is treated with a hologram layer or a reflective layer. In this case, there is an advantage that a 3D stereoscopic structure can be remarkably emphasized.

2 shows a state in which the label 200 is detached from the body 120 of the pressure vessel 100. As shown in FIG.

The label 200 attached to the pressure vessel 100 according to the present invention is formed in a two-dimensional structure that is planar rather than originally formed in a three-dimensional structure.

A print layer 202 is formed on the portion to be covered on the solid portion 122 of the body portion 120 of the pressure vessel 100 and a reflection layer or a hologram layer is formed on this portion, Let the color of the surface be different from the color of the surface, the pattern, the number, the character, and the picture.

The label 200 of the original two-dimensional shape is transformed into a three-dimensional structure by the pressure generated by forming the solid part 122 of the body part 120 of the pressure vessel 100 by in-mold labeling.

A solid part 122 is formed on the surface of the body part 120 of the pressure vessel 100 and the solid part 122 is protruded or recessed from the other surface of the body part 122, The boundaries become clear.

The boundary of the solid part 122 and the boundary of the print layer 202 of the label 200 are disposed at mutually coinciding or substantially similar positions so that the contour of the solid part 122 is aligned with the printed layer 202 of the label 200. [ So that it can be revealed.

On the other hand, a line on the edge of the position where the label 200 is to be attached represents a step 121. The step 121 aligns the portion to be labeled in the in-mold labeling process with the unlabeled portion .

As shown in FIG. 3, when viewed from the side of the pressure vessel 100 formed with the three-dimensional three-dimensional structure and labeled, the printed layer 202 covering the solid part 122 and the solid part 122 is located outside Which causes the visual contour difference with the surface without the solid part 122 to be marked.

As shown in FIG. 4, the solid part 122 formed in the pressure vessel 100 is provided in a shape protruding outwardly from the other part, and is formed so as to protrude from other parts.

In addition, a portion protruding to various degrees is formed in the solid part 122, and this part forms letters, numbers, pictures, shapes, patterns, patterns, etc., and attracts attention of those who look at them.

The label 200 is attached on the solid part 122 and the printing layer 202 is positioned on the surface of the label 200 so as to be protruded by the solid part 122. As a result, Reflectance, and hologram.

Here, the interface of the print layer 202 preferably corresponds to the interface of the solid body 122.

The reason why the solid body 122 can be formed in the pressure vessel 100 is that a solid groove (FIG. 9, 322) that exactly matches the solid body 122 is formed inside the metal mold used for the blowing operation , The print layer 202 of the label 200 must be arranged so as to cover exactly these three-dimensional grooves 322.

When the preform (Figs. 9 and 700) expands in this state, the portion expanding toward the three-dimensional groove 322 pushes the label 200 to the inner surface of the three-dimensional groove 322 to form the solid portion 122, It is possible to make a shape appear.

5 shows a state in which the three-dimensional container 100 and the label 200 are separated.

When the label 200 is removed after the label 200 is deformed in a state where the label 200 is attached to the three-dimensional container 100, a portion corresponding to the print layer 202 of the label 200 due to thermal deformation and physical deformation And is deformed into a three-dimensional shape conforming to the shape of the solid portion (122) of the pressure vessel (100).

As described above, the label 200 originally forms a plane as a two-dimensional structure, and a planar printing layer 202 is formed on the outer surface of the substrate portion 201, (203) are formed.

6 to 8 show that a figure (for example, a dragon shape) is expressed in a three-dimensional form in the pressure vessel 10.

FIGS. 1 to 5 illustrate that characters can be expressed in a three-dimensional shape. FIG. 6 to FIG. 8 are provided to allow a complex figure or pattern other than letters.

Again, the original label is printed in a two-dimensional planar shape.

However, when a preform is inflated by air injection after a droplet shape is formed on the inner surface of the mold cavity to be used in the blowing process and the droplet shape is accurately matched on the droplet shape, A solid body in the form of a solid groove is formed on the surface of the container by expansion of the surface of the moving preform.

In this way, the print layer 1202 having a figure of a dragon shape can be accurately converted into a three-dimensional shape having a three-dimensional effect.

9 (a) to 9 (d) illustrate a process for manufacturing a pressure vessel having an in-mold label according to the present invention.

As shown in Fig. 9 (a), the molds 310 and 320 for manufacturing the shape of the pressure vessel 100 are spaced apart from each other.

 It is necessary to heat the molds 310 and 320 through hot water or a heater, and the arrow T circulating to the dotted line in FIGS. 9 to 10 shows the heating state.

The reason why the molds 310 and 320 are to be heated is to make the label stick to the container more firmly and stably, as will be described in detail later.

A solid groove 322 for forming a solid body (see FIG. 2) 122 is formed on the inner surface of the cavity of one of the metal molds 320.

When the label 200 is attached to the molds 310 and 320, the suction channels 311 and 321 for vacuum-adhering the label 200 are formed.

When the molds 310 and 320 are opened, the label supply apparatus 400 moves downward to the vertical arms 4001 on the molds 310 and 320 to move the label 200 into the molds 310 and 320.

In the label supply device 400, the vertical arm 401 is provided with a pipe 403 which is movable in a horizontal direction in a stretchable manner (or moving in a telescopic multistage manner).

The pipe 403 also has a vacuum attraction force so that the label 200 is attached to the pipe 403. [

In this state, when the pipe 403 moves on the inner surfaces of the respective molds, the label 200 attached to the pipe 403 is attached to the inside of the mold.

When the label 200 is attached to the inner surfaces of the molds 310 and 320 by the vacuum suction pressure, the vacuum pressure on the inner surface of the pipe 403 is released.

When the pipe 403 returns to its original state in this state, the label 200 remains attached to the inner surface of the cavity.

At this time, it is preferable that the boundary surface of the three-dimensional groove 322 and the boundary surface of the printed layer (see FIG. 2, 202) of the label 200 are positioned to coincide with each other

Since the label 200 is a two-dimensional plane, it does not enter the inner surface of the three-dimensional groove 322 and covers the three-dimensional groove 322.

In this state, the preform 700 enters between the open molds 310 and 320 in a state where the preforms 700 are arranged upside down on the lip plate 600.

Here, the preform 700 may be a preform such as PE or PET, but it is preferably made of a PET preform.

A bottom forming part 500 for forming the bottom surface of the pressure vessel 100 is disposed on the upper part of the molds 310 and 320.

Then, as shown in FIG. 9 (c), the molds 310 and 320 are closed and the bottom portion 500 also seals the upper portions of the molds 310 and 320.

In this state, the lower portions of the molds 310 and 320 are closed by the lip plate 600.

In this state, the air supply port 920 of the air injection device enters the lower portion of the lip plate 600 for the blowing operation for expanding the preform 700, and is disposed at the inlet side of the preform 700, After completion of the expansion of the container, the pipe 800 of the air injection device for supplying air for cooling the container enters from the bottom of the lip plate 600 and enters the preform 700.

The air supply port 920 of the air injecting apparatus is disposed at an upper portion of the body portion 900. A passage through which air can move is provided inside the body portion 900 to communicate with the air supply port 920, 900 is provided with a communication hole 910 to communicate with the flow path.

Accordingly, when a hose (not shown) such as a compressor (not shown) provided outside is connected to the communication hole 910 and connected to a device for supplying compressed air, air is supplied to the inside of the body portion 900 Flows through the flow path, and is discharged toward the air supply port 920.

On the other hand, the pipe 800 of the air injection device is disposed so as to pass through the air supply port 920 in the vertical direction. The pipe 800 of the air injection device is provided to be able to move up or down by a separate actuator (not shown), and its ascending or descending speed can also be adjusted.

A plurality of discharge holes 801 through which air can be discharged are formed on the outer circumferential surface of the pipe 800 of the air injection device.

9 (d), when the air is injected into the air supply port 920 of the air injection device, the molds 310 and 320, which are expanded by the expansion of the preform 700, It is transformed to fit.

Hereinafter, the process of forming the preform 700 into a container and the process of labeling in the container forming process will be described in detail.

The air supply port 920 rises and is disposed at the inlet side of the preform 700, as shown in Fig. 9 (c). On the other hand, the pipe 800 of the air injection device also rises and is inserted into the inlet of the preform 700.

The air flows into the communication hole 910 and moves along the inside of the body portion 900 and then is discharged from the air supply port 920 and flows into the interior of the preform 700 So that the preform 700 is expanded.

The air discharged from the air supply port 920 enters the space between the inlet of the preform 700 and the pipe 800.

(Air hole 910 -> inside of the body part 900 -> air supply port 920) -> space between the inlet of the preform 700 and the pipe 800 so that air can be inflated to expand the preform as described above - > Inside the preform 700) is defined as a first route.

Preferably, the air to be injected is supplied at room temperature or in a heated state.

On the other hand, the pressure of the air injected in the vessel expansion process is set to be within the first pressure range (for example, 1.5 to 2.0 MPa). This is a pressure range in which the preform 700 is inflated at an appropriate rate and its surface is not torn or damaged.

However, the pressure range may be changed without limiting to the example.

Air is injected through the air supply port 920 as shown in FIG. 10 (a), and the preform 700 is expanded and expanded through the blowing, thereby rising up to the pipe 800 of the air supply apparatus. At this time, the upper end of the air supply pipe 800 may push up the inner surface of the preform 700 to help inflate and extend.

10 (b), the preform 700 is formed into the shape of the container 100 according to the inner surface shape of the metal mold.

As described above, the mold 320 has the three-dimensional groove 322 formed therein. The three-dimensional shape of the three-dimensional groove 322 may correspond to the shape of the three-dimensional groove 322.

Part of the surface of the preform 700 is pressed against the label 200 covering the three-dimensional groove 322 and the label 200 is pressed against the three-dimensional groove 322, It is deformed according to the shape.

Thus, the label 200 attached to the inner surface of the molds 310 and 320 is adhered to the surface of the container during the process of forming the container.

4 and 5, the adhesive layer 203 is formed on the inner surface of the label 200. Since the adhesive layer 203 can be melted and adhered in an atmosphere of a predetermined temperature (for example, 50 DEG C) or more, And melts when the surface of the preform 700 is closely adhered to the surface of the preform 700 by the surface temperature of the hot preform 700 and the temperature of the molds 310 and 320 so that the label 200 is firmly fixed to the surface of the pressure vessel 100.

2) 122 is formed on the surface of the pressure vessel by the three-dimensional groove 322. The three-dimensional body 122 is covered with the label 200 and is shaped , A visually stereoscopic characteristic can be imparted to the pressure vessel.

The preforms are closely adhered to the molds 310 and 320 to be deformed and formed into a container shape, and a pressure air having a second pressure range higher than the first pressure range is injected into the container with the label attached (indicated by B) . The range of pressure is only increased and the route of air movement is the same as the first route.

The temperature of the injected air is kept at room temperature or in a heated state (for example, 40 to 90 ° C).

This is because the expansion of the preform 700 is performed to some extent, and then the container shape itself, the shape of the solid body, or the specific shape of the end portion of the solid body is more surely ensured. On the other hand, So that it can be attached.

Here, the second pressure range is preferably higher than the first pressure range (e.g., 1.5 to 2.0 MPa (15 to 20 bar)) (e.g., 2.5 to 4.0 MPa (25 to 40 bar)). However, the pressure range may be changed without limiting to the example.

Thereafter, as shown in Fig. 10 (c), it is necessary to cool the container by injecting the cooled air through the pipe 800 of the air injection device.

Here, the air flows into the container 100 through the pipe 800 of the air injecting device to cool the container 100, and then exits to the space between the inlet of the container and the pipe 800 of the air injecting device. This route is defined as the second route, and is denoted by C.

When the mold is opened immediately after the container is formed, the container shrinks due to the difference between the atmospheric temperature and the temperature of the container. As a result, defects such as deformation and deviation of the container may occur, and furthermore, the label may also fall from the container.

However, in order to compensate for this, when the mold is cooled in the mold for a certain period of time, the productivity is deteriorated, and if the mold itself is cooled, the label may not be adhered to the container properly.

In order to overcome this disadvantage, it is possible to maximize the productivity of the container by supplying and discharging the cooling air into the molded container.

Here, the injection pressure of the cooling air is preferably 1.5 to 4.0 MPa (15 to 40 bar), but it may be changed without being limited thereto. And the temperature of the air can be room temperature air or more cooled air.

The surface temperature of the molds 310 and 320 is set to 40 to 80 ° C so that the adhesive layer 202 can be easily fused so that the label 200 adheres firmly to the surface of the pressure container 100 in the container forming process shown in FIGS. Lt; 0 > C.

For this purpose, it is preferable that the molds 310 and 320 shown in FIGS. 9 and 10 are continuously heated as indicated by T.

However, this temperature can be adjusted according to circumstances outside the above temperature range.

On the other hand, the material constituting the pressure vessel of the present invention is a plastic resin, and it is particularly preferable that the material is a PET material suitable for a pressure vessel.

However, in the case of a preform made of PET, its surface temperature is about 90 to 100 ° C, and its surface latent heat is not high. Particularly, it is remarkable that the surface temperature of the preform made of PE is 180 ~ 200 ℃ and the surface latent heat is small.

  Therefore, when the container is molded using the PET preform, since the latent heat is small, it is not enough that the labeling is perfectly secured only with the latent heat of the PET preform.

Therefore, it is necessary to separately heat the molds 310 and 320 to perform labeling as described above.

To this end, in the present invention, by introducing a step of heating the mold, not cooling the molds 310, 320, the low latent heat of the PET preform is compensated, and the label is formed on the surface of the container and the three- And adhered firmly.

10 (c)) of injecting cooling air through the pipe 800 of the air injecting apparatus to the outside of the mold, Respectively.

After the cooling air has been injected into the container, the container may be cooled and then exited between the container inlet and the pipe 800.

By thus heating the molds 310 and 320 so as to firmly attach the label to the container, it is possible to increase the cooling rate of the container by increasing the rate of production of the labeled container by injecting cooling air into the container .

After the cooling process for the container is completed, as shown in FIG. 10 (d), the pipe 800 of the air injection device is lowered, the molds 310 and 320 are opened, and the container 100, Take it out.

11 is a flowchart summarizing a process of manufacturing a container having a three-dimensional shape and being labeled according to the present invention.

First, as shown in Fig. 9 (a), the molds (Figs. 9 and 10, 310 and 320) (S1102).

Then, as shown in Fig. 9 (a), the label is attached to the inner surface of the mold using the label supply device on the inner surface of the mold while the mold is open (S1103). At this time, the mold is provided with the suction passage (see FIGS. 9 and 10, 311 and 321), and the label can be attached to the inner surface of the mold by the vacuum suction pressure.

9 (b), a preform (preferably a PET preform) 700 is disposed in the space between the open molds (S1104).

The preform 700 is supported on the lip plate 600 and positioned in a lower region of the space between the molds 310 and 320.

9 (c), the molds 310 and 320 are closed (S1105), and the air supply port 920 is lifted up and inserted into the preform 700 as shown in FIG. 9 (d) , And the heated air is injected into the first pressure range (S1106).

In such a case, as shown in Fig. 10 (a), the preform 700 is expanded and the pipe 800 of the air injection apparatus is also elevated.

In this way, the preform is expanded and deformed into a container shape. Further, a three-dimensional shape is formed in the container in conformity with the shape of the three-dimensional groove 322 provided in the mold 320. The label 200 is in- labeling method.

In this state, in order to complete the shape of the three-dimensional shape formed in the container and to make the labeling more robust, air heated to a second pressure range higher than the first pressure range is injected into the container (S1107).

Since the mold is continuously heated and held, cooling air is injected into the container through the pipe 800 of the air injection device to cool the labeled container (S1108).

When cooling is completed, the pipe 800 and the air supply port 920 of the air injection device are lowered again, and then the molds 310 and 320 are opened (S1109) (S1110).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be appreciated that one embodiment is possible.

Accordingly, the true scope of the present invention should be determined by the technical idea of the claims.

100: pressure vessel 110: inlet part
120: body part 121:
122: solid part 200: label
201: substrate portion 202: printed layer
203 adhesive layer 310 320 mold
322: three-dimensional groove 800: pipe of air injection device
900: Body portion 910:
920: air supply port

Claims (8)

Heating a mold in which a three-dimensional groove corresponding to a three-dimensional shape to be formed on a surface of a PET container is formed;
Opening the mold;
Attaching a label to the inner surface of the mold, wherein the label is attached to the inner surface of the mold so that at least a part of the label covers the three-dimensional groove;
Placing a PET preform of a PET container in a cavity of the mold;
Closing the mold and inflating the preform by injecting air into the PET preform at a predetermined pressure through the first route;
The step of deforming the label adhered to the surface of the preform made of PET into a three-dimensional shape conforming to the three-dimensional groove by the air pressure together with the surface of the PET preform foamed with the expanded PET preform and the label adhered to each other; ;
Injecting cooling air into a PET preform through a second route in a preform of a PET material which is expanded and deformed into a container form;
Separating the molds from each other, separating the molds from each other, separating the molds from each other, separating the molds from each other with PET, Way. The method according to claim 1,
The label includes a substrate portion, an adhesive layer which is provided on the inner surface of the substrate portion and fused at a predetermined temperature or more, and a pattern or a figure or a letter or number corresponding to the projected or recessed portion of the three- And a printed layer printed thereon,
The step of attaching the label to the inner surface of the mold
And attaching the label to the mold so that the print layer is positioned in conformity with the three-dimensional groove. The method of manufacturing a pressure vessel of a PET material having an in-mold label and a three-dimensional shape. The method according to claim 1,
The step of inflating the PET preform further comprises the step of injecting air at a pressure in a first pressure range and thereafter at a pressure in a second pressure range higher than the first pressure range, Wherein the mold has an in-mold label and a three-dimensional shape. The method according to claim 1,
The first route is embodied by an air supply port which is provided so as to be movable up and down and can be arranged at the inlet of the preform,
Wherein the second route is provided by a pipe of an air injection device which is provided to be able to move up and down and which can be inserted into the preform, and a method of manufacturing a PET container having an in-mold label and a three-dimensional shape. The method according to claim 1,
And heating the mold so that the temperature of the mold is maintained within a temperature range of 40 to 80 占 폚. Heating a mold in which a three-dimensional groove corresponding to a three-dimensional shape to be formed on a surface of a PET container is formed;
Opening the mold;
Attaching a label to the inner surface of the mold, wherein the label is attached to the inner surface of the mold so that at least a part of the label covers the three-dimensional groove;
Placing a PET preform of the container in a cavity of the mold;
Closing a mold and inflating a preform made of PET by injecting air into a PET preform at a predetermined pressure using an air injection device located outside the mold;
The expanded preform and the label adhere to each other and deform the label adhered to the surface of the PET preform to a three-dimensional shape conforming to the three-dimensional groove by the air pressure together with the surface of the PET preform which is inflated;
Injecting cooling air into a PET container formed by an expanded PET preform,
Separating the molds from each other, separating the molds from each other, separating the molds from each other, separating the molds from each other with PET, Way. The method according to claim 6,
The step of expanding the PET preform may be performed by injecting air through an air supply port capable of supplying air into the PET preform,
The step of cooling the PET preform comprises the step of injecting cooling air into the PET preform through a pipe of an air injection device insertable into the PET preform. Wherein the pressure vessel is made of PET. The method according to claim 6,
Expanding the PET preform comprises:
Injecting air in a first pressure range;
Further comprising the step of injecting air with a pressure in a second pressure range higher than the first pressure range after the air injection is completed in the first pressure range. A method of manufacturing a pressure vessel.

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