JP2002370298A - Design-displayed synthetic resin hollow body, and method and apparatus for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a design-displayed synthetic resin hollow body excellent in safety, and a method and apparatus for simply manufacturing the same with excellent productivity. SOLUTION: The design-displayed synthetic resin hollow body 1 is constituted by thermally fusion-bonding a flat second synthetic resin film to a first synthetic resin film having projected structures on the single surface thereof in a predetermined pattern so as to hermetically close the inner spaces of the projected structures. Surface treatment is applied to the surface 21 opposite to the surface thermally fusion-bonded to the first synthetic resin film of the second synthetic resin film and the surface 21 has a region visually confirmed as display (display region 24).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin hollow body (hereinafter, also simply referred to as "hollow body") on which a design is displayed.
The present invention relates to a manufacturing method and a manufacturing apparatus.

[0002]

2. Description of the Related Art As shown in FIG.
It has a large number of closed chambers 5 in which a flat second synthetic resin film 3 is heat-sealed to a first synthetic resin film 2 having a convex structure 4 projecting in a predetermined pattern on one side. is there. Since the synthetic resin hollow body 1 has the closed chamber 5, it is excellent in heat retention, heat insulation, elasticity, and cushioning properties, and is therefore widely used as a heat insulator, a heat insulator, and a cushion material.

[0003] In recent years, with respect to this synthetic resin hollow body, development of a hollow body having a function has been promoted in response to a request from a consumer, and for example, a hollow body having antistatic, rustproof, conductive, spontaneous decomposability, etc. Has already been produced and sold. These functional synthetic resin hollow bodies are apparently almost the same and are hard to distinguish. Conventionally, in order to simplify these distinctions, a function display is printed directly on the back of the surface of the second synthetic resin film 3 which is thermally fused to the first synthetic resin film 2 as shown in FIG. Or sticking a sticker on which the function display is printed.

However, since the ink used for printing contains heavy metals and organic solvents contained in the pigment, there is a problem in that toxic substances are generated when the printed synthetic resin hollow body is incinerated. In addition, since the ink adheres to the surface of the synthetic resin hollow body, there is a problem that it is difficult to use for packaging foodstuffs from the viewpoint of safety.

Further, with the enforcement of the Container Recycling Law, it is required to display the material of the synthetic resin hollow body and the recycle mark, etc., and it is urgently necessary to establish a display method.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a synthetic resin hollow body having a highly safe design display, and An object of the present invention is to provide a manufacturing method and a manufacturing apparatus thereof, which are easy to manufacture and excellent in productivity.

[0007]

That is, according to the present invention, a first synthetic resin film having a convex structure protruding in a predetermined pattern on one surface side is provided so as to seal the inner space of the convex structure. It is a synthetic resin hollow body that has been subjected to design display by forming a closed chamber by heat-sealing a second synthetic resin film, and the first synthetic resin film of the second synthetic resin film A synthetic resin hollow body provided with a design display, characterized in that a back surface of the heat-sealed surface is subjected to a surface treatment and has a region (display region) visually recognized as a display.

In the present invention, the surface treatment is preferably satin finish, and is preferably performed by pressing the back surface with a predetermined engraved roller.
The material of the first synthetic resin film and / or the second synthetic resin film is preferably a polyolefin, and more preferably a polyethylene.

Further, according to the present invention, using a molding roller having a concave portion on the outer periphery, a first synthetic resin film delivered from a first film supply source is provided with a convex structure protruding in a predetermined pattern on one side. While forming, using a pressure roller subjected to a predetermined engraving, the second synthetic resin film sent from the second film supply source, the second synthetic resin film, so that the inner space of the convex structure is sealed, the second While being heat-sealed to one synthetic resin film, the back surface of the surface of the second synthetic resin film that is heat-sealed with the first synthetic resin film is subjected to a surface treatment by the engraving of the pressure roller. Thus, there is provided a method for producing a synthetic resin hollow body provided with a design display, wherein a region (display region) visually recognized as a display is formed.

In the present invention, it is preferable to use a pressure roller whose surface is made of metal, and it is preferable to use a roller whose surface is subjected to surface treatment by etching or sandblasting. At this time, it is preferable to use a vacuum suction type pressure roller as the pressure roller.

According to the present invention, the synthetic resin is kneaded.
An extruder to be extruded, the synthetic resin kneaded from the extruder is supplied, a first film supply source for sending out a first synthetic resin film, and the synthetic resin kneaded from the extruder is supplied. A second film supply source for sending out a second synthetic resin film, and a forming roller having a concave portion on the outer periphery, which forms a convex structure protruding in a predetermined pattern on one side of the first synthetic resin film, An apparatus for manufacturing a synthetic resin hollow body including a first synthetic resin film having a convex structure formed thereon and a pressure roller for thermally fusing the second synthetic resin film, wherein the pressure roller has a predetermined shape. Engraving, performing surface treatment on the back surface of the surface of the second synthetic resin film that has been heat-sealed with the first synthetic resin film to form a region (display region) that is visually recognized as a display. Features Design display manufacturing apparatus made synthetic resin hollow body, is provided.

In the present invention, the surface of the pressure roller is preferably a metal, and the surface treatment of the pressure roller is preferably etching or sandblasting. At this time, it is preferable that the pressure roller is a vacuum suction type pressure roller.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 4, the synthetic resin hollow body of the present invention is provided with a first synthetic resin film 2 having a convex structure 4 protruding in a predetermined pattern on one side as described above. Then, a synthetic resin hollow body 1 on which a flat second synthetic resin film 3 is heat-sealed to form a closed chamber 5 so that the inner space of the convex structure 4 is sealed is formed. Then, as shown in FIG. 1, the back surface 21 of the surface of the second synthetic resin film that has been heat-sealed to the first synthetic resin film is subjected to a surface treatment, so that an area visible as a display (display area 24) ). In the present invention,
The surface treatment is preferably a satin finish, and is preferably performed by pressing the back surface of the second synthetic resin film with a predetermined engraved roller. In addition, the code | symbol 23 of FIG. 1 has shown the satin part. From these facts, it is possible to apply a design such as a material display, a function display, a recycle mark, etc. on the synthetic resin hollow body without using ink, and therefore, the present invention provides a synthetic display with a highly safe design display. A resin hollow body can be provided.

[0015] In the present specification, the "design" means a function display, a material display, a recycle mark, a character display, a mark display, a design display, and all other things.

FIG. 1 is a schematic view showing an example of a synthetic resin hollow body 1 on which the design of the present invention is displayed. A recycle mark (display area 2) is provided on a back surface 21 of a second synthetic resin film.
4) is displayed. As described above, by performing the surface treatment on the predetermined region of the second synthetic resin film to form the satin portion 23, a display can be formed by a portion other than the satin portion 23.

The material of the first synthetic resin film and / or the second synthetic resin film used in the present invention includes:
Polyolefin is preferred, and polyethylene is more preferred because no harmful substances are generated when the synthetic resin hollow body is incinerated.

As shown in FIG. 3, the method of manufacturing the synthetic resin hollow body 1 according to the present invention uses the molding roller 9 having the concave portion 10 on the outer periphery as described above.
The first synthetic resin film 2 sent from the first film supply source 7 is formed with a convex structure protruding in a predetermined pattern on one surface side, and the second synthetic resin film 2 is pressed by a predetermined engraving using a pressure roller 11. The second synthetic resin film 3 sent from the film supply source 8 is thermally fused to the first synthetic resin film 2 so that the inner space of the convex structure is sealed, while the second synthetic resin film 3 is 3 is to perform a surface treatment on the back surface 21 of the surface which is thermally fused with the first synthetic resin film 2 by the engraving of the pressure roller 11 to form an area (display area) which is visually recognized as a display. Features. According to this manufacturing method, the synthetic resin hollow body on which the design display of the present invention has been performed can be easily manufactured with high productivity.

The manufacturing apparatus shown in FIG. 3 is merely an example, and shows only a basic structure (basic manufacturing method). Therefore, in the production method of the present invention, in order to improve the strength and productivity of the synthetic resin hollow body, between the film supply source for feeding the synthetic resin film and the pressure roller, the synthetic resin film is rapidly cooled. And a heating roll for further heating the cooled synthetic resin film may be used, and the portion other than the basic manufacturing method includes all manufacturing methods.

Here, the molding roller 9 used in the present invention is used.
There is no particular limitation, and a general-purpose material for molding a synthetic resin hollow body can be used.

FIG. 2 is a perspective view showing an example of the pressure roller 11 in the synthetic resin hollow body on which the design of the present invention is displayed. As the pressure roller 11 used in the present invention,
It is preferable to use a metal whose surface is metal and subjected to surface treatment by etching or sandblasting. As a method of etching or sandblasting the metal surface,
There is no particular limitation, and a general-purpose method can be used. At this time, for the pressure roller 11, it is possible to use a vacuum suction type pressure roller in which fine holes and / or slits are formed on the roller surface and which can vacuum suction a film in contact with the roller.
It is more preferable because the display can be made clearer. Generally, as shown in FIG. 3, the vacuum suction type pressure roller is used to heat-bond the first synthetic resin film 2 and the second synthetic resin film 3 to each other.
It is used to improve the smoothness of. In the present invention, the second synthetic resin film 3 is vacuum-suctioned by using a vacuum suction-type pressure roller, so that the pressure roller 11
Then, the second synthetic resin film 3 is more closely adhered, and the engraving of the surface-treated portion of the pressure roller 11 can be transferred better, and the display can be made clearer.

Also, the extrusion amount of the first film supply source 7 and the second film supply source 8, the forming roller 9 and the pressing roller 1
The rotation speed and pressure of 1 can be performed under general manufacturing conditions.

As shown in FIG. 3, an apparatus for manufacturing a synthetic resin hollow body according to the present invention is provided with an extruder 6 for kneading and extruding a synthetic resin as described above, 6
A first film supply source 7 for supplying the kneaded synthetic resin from the first synthetic resin film 2, and a kneaded synthetic resin from an extruder 6, for supplying a second synthetic resin film Second film source 8 delivering 3
A molding roller 9 having a concave portion 10 on the outer periphery for forming a convex structure protruding in a predetermined pattern on one surface side of the first synthetic resin film 2; a first synthetic resin film 2 having the convex structure formed thereon; And a pressure roller 11 for thermally fusing the second synthetic resin film 3 with the pressure roller 11 as shown in FIGS. 1 and 2.
Is subjected to a predetermined engraving, a surface treatment is performed on the back surface 21 of the surface of the second synthetic resin film that is heat-sealed with the first synthetic resin film, and an area (display area 24) visually recognized as a display is formed. It is characterized by being formed. Since the specific configuration and the technical effects of the present invention have been described above, overlapping parts will be omitted. With this manufacturing apparatus, the synthetic resin hollow body on which the graphic display of the present invention has been performed can be manufactured easily and with good productivity.

[0024]

As described above, according to the present invention,
It is possible to provide a synthetic resin hollow body on which a design display excellent in safety has been performed, and a manufacturing method and a manufacturing apparatus thereof which are easy to manufacture and excellent in productivity.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of a synthetic resin hollow body on which a design display of the present invention is made.

FIG. 2 is a perspective view showing an example of a pressure roller in a synthetic resin hollow body on which a design is displayed according to the present invention.

FIG. 3 is a cross-sectional view showing an example of a synthetic resin hollow body manufacturing apparatus on which a design is displayed according to the present invention.

FIG. 4 is a sectional view showing an example of a synthetic resin hollow body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Synthetic resin hollow body, 2 ... First synthetic resin film, 3 ... Second synthetic resin film, 4 ... Convex structure, 5 ... Sealed room, 6 ... Extruder, 7 ... First film supply source, 8 ... second film supply source, 9 ... forming roller, 10 ... concavity, 11 ... pressure roller, 21 ... back surface, 22 ... surface treatment part, 23 ... satin part, 24 ... display area.

────────────────────────────────────────────────── ─── of the front page continued (51) Int.Cl. ⁷ identification mark FI theme Court Bu (reference) B32B 27/32 B32B 27/32 E // B29K 23:00 B29K 23:00 B29L 9:00 B29L 9:00 22:00 22:00 F-term (reference) 4F100 AK01A AK01B AK04A AK04B DD06A DD22 EC032 EH172 EJ192 EJ242 EJ342 EJ642 GB23 HB00B HB22B JL00 4F207 AA03 AA04 AF07 AG03 AG05 AG07 AJ02 KA01 AG07 A03 AG03 A0704 AJ02 MA01 MB02 MC01 MD02 MG04 MG22 MJ09

Claims (13)

[Claims] 1. A flat second synthetic resin film is heat-sealed to a first synthetic resin film having a convex structure protruding on one side in a predetermined pattern so as to seal the inner space of the convex structure. A synthetic resin hollow body in which the design is formed by forming a closed chamber, wherein the back surface of the surface of the second synthetic resin film that is heat-sealed with the first synthetic resin film is subjected to a surface treatment. A synthetic resin hollow body provided with a pattern display, wherein the synthetic resin hollow body is provided and has an area (display area) visually recognized as a display. 2. The method according to claim 1, wherein the surface treatment is a satin finish.
Synthetic resin hollow body on which the pattern display according to 1 is made. 3. The method according to claim 1, wherein the surface treatment is performed by pressing the rear surface with a roller having a predetermined engraving.
Synthetic resin hollow body on which the pattern display according to 1 is made. 4. The synthetic resin provided with a graphic according to claim 1, wherein the material of the first synthetic resin film and / or the second synthetic resin film is a polyolefin. Hollow body. 5. The synthetic resin provided with a graphic according to claim 1, wherein the material of the first synthetic resin film and / or the second synthetic resin film is polyethylene. Hollow body. 6. Using a molding roller having a concave portion on the outer periphery,
Forming a convex structure protruding in a predetermined pattern on one side of the first synthetic resin film sent from the first film supply source, and supplying the second film by using a predetermined engraved pressure roller. While the second synthetic resin film sent from the source is heat-sealed to the first synthetic resin film so that the inner space of the convex structure is sealed, the second synthetic resin film of the second synthetic resin film is sealed. A pattern display characterized by forming a region (display region) visible as a display by performing a surface treatment on the back surface of the surface heat-fused with one synthetic resin film by the engraving of the pressure roller. Of producing a synthetic resin hollow body. 7. The method according to claim 6, wherein the pressure roller is made of a metal whose surface is made of metal. 8. The method according to claim 6, wherein the pressure roller is one whose surface is subjected to surface treatment by etching or sandblasting. 9. The method according to claim 6, wherein a vacuum suction type pressure roller is used as the pressure roller. 10. An extruder for kneading and extruding a synthetic resin, a first film supply source supplied with the kneaded synthetic resin from the extruder, and sending out a first synthetic resin film; The synthetic resin kneaded from is supplied, a second film supply source for sending out a second synthetic resin film, and forming a convex structure protruding in a predetermined pattern on one side of the first synthetic resin film, An apparatus for manufacturing a synthetic resin hollow body comprising: a molding roller having a concave portion on the outer periphery; and a pressure roller for thermally fusing the first synthetic resin film and the second synthetic resin film having the convex structure formed thereon. The pressure roller is subjected to a predetermined engraving, the surface of the second synthetic resin film is subjected to a surface treatment on the back side of the first synthetic resin film that is heat-sealed, and is visually recognized as a display. Area Design displays made synthetic resin hollow body manufacturing apparatus characterized by forming the display region). 11. The apparatus for manufacturing a synthetic resin hollow body provided with a design according to claim 10, wherein the surface of the pressure roller is made of metal. 12. The apparatus for manufacturing a synthetic resin hollow body according to claim 10, wherein the surface treatment of the pressure roller is etching or sandblasting. 13. The apparatus for manufacturing a synthetic resin hollow body according to claim 10, wherein said pressure roller is a vacuum suction type pressure roller.