JPH0872905A - Tubular container with surface processed part and its manufacture - Google Patents

Abstract

PURPOSE: To easily and assuredly identify the content of a container by the touch of an uneven pattern by providing the uneven pattern on a heat-bonded part of a tubular container. CONSTITUTION: A tubular container 20 is constituted of a body part 21 consisting of a cylindrical body of which one end is closed, and a head part 25 with an opening, which is provided at the other end of the body part 21. In this case, the body part 21 is formed by bonding a wound synthetic resin laminated sheet 1, and a protruding pattern 100 is arranged at a heat-bonded part which is shown by diagonal lines. Then, on the head part 25 of the tubular container 20, a cap 30 wherein an area on the top end surface is comparatively wide is attached so that the tubular container may be constituted in such a manner that the tubular container can be put upside-down with the cap 30 on the bottom. Therefore, the content of the tubular container 20 can be easily identified by touching the protruding pattern 100 which is arranged on the bonded part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tube container for containing food, toothpaste, cosmetics and the like, and a method for producing the same.

[0002]

2. Description of the Related Art Conventionally, a tube container has been used as a container for taking out a fixed amount of contents from a viscous substance such as a paste toothpaste. As such a tube container, for example, a laminated tube container that uses a body part in which both ends are adhered by winding a laminated film, an extruded tube container that uses a cylindrical body made by extruding a resin into a cylinder, or a mouth part and a tubular part. There is a blow tube container or the like for integrally molding the body part of

Of the above-mentioned three types of tube containers, in the case of the extruded tube container and the blow tube container, the material used for the body is limited to resin. When a resin is used as a raw material, a laminate using a resin having the gas barrier property is used to protect the contents. Usually, a laminated body of this type is a multi-layered body having five or more layers, and it is difficult to extrude the laminated body at the same time to form a uniform diameter and thickness. Further, in order to obtain a laminate that can be extruded, there is a limitation in the selection of the resin, and it is difficult to obtain sufficient gas barrier properties and adhesive strength between resin layers. Therefore, the contents of these containers are limited. was there.

On the other hand, in the laminated tube container, the film material can be freely selected according to the contents.
In particular, an aluminum foil having excellent gas barrier properties and moisture resistance can be used in the laminated film, so that the contents can be effectively protected. Further, since the laminated film firmly laminated with the adhesive is wound and used as the cylindrical body, the adhesive strength between the layers is also good. Therefore, the laminated tube container is generally widely used for various contents.

With the widespread use of such tube containers, tube containers having a similar shape have come to be frequently used in daily life. For this reason, it has become common to use the tube container by mistake.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to provide a tube container in which the contents of the container can be identified by touching.

Another object of the present invention is to provide a method for easily manufacturing a tube container whose contents can be identified by touching the tube container at low cost.

[0008]

The surface-treated tube container of the present invention has a cylindrical body portion integrally joined by winding a synthetic resin laminated sheet and thermocompressing the obtained overlapping portion. In the tube container having the above, an uneven pattern for identification is provided in the thermocompression bonded portion.

Further, according to the method of manufacturing a tube container with a surface treatment of the present invention, a synthetic resin laminated sheet is wound, and the obtained overlapping portion is thermocompression-bonded to form an integrally joined tubular body portion. In the method for manufacturing a tube container including the step of, the inner surface and the outer surface of the body are arranged to face each other so as to rotate parallel to the longitudinal direction of the body, and at least on the inner surface side, the synthetic resin is provided. The present invention is characterized in that the surface processing of the synthetic resin laminated sheet is performed simultaneously with thermocompression bonding by using a pair of heating belts provided with an uneven pattern for surface processing of the laminated sheet.

[0010]

According to the tube container of the present invention, since the predetermined concavo-convex pattern according to the contents is provided at the joint portion of the body, the contents can be identified by touching it. .

Further, according to the method for producing a tube container of the present invention, when the wound synthetic resin laminated sheets are joined, thermocompression bonding is performed by using a heating belt provided with an uneven pattern for surface processing. A predetermined concave-convex pattern can be formed at the joint portion of the body simultaneously with thermocompression bonding.
This method does not complicate the steps and devices, because it can be performed using ordinary steps and devices, except that a heating belt having an uneven pattern for surface processing is used. In addition, according to this method, thermocompression bonding and formation of the identification concave-convex pattern can be performed simultaneously in one step,
Good productivity.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings.

FIG. 1 is a front view showing an example of the tube container of the present invention.

As shown in FIG. 1, the tube container 20 is
A body portion 21 made of a tubular body with one end closed, and a body portion 21.
And a head 25 having an opening provided at the other end of
The body portion 1 is obtained by joining the wound synthetic resin laminated sheets 1, and a convex pattern 100 is provided in the thermocompression-bonded portion shown by the diagonal lines in the figure. In this tube container 20, a cap 30 having a relatively large area at the upper end surface is attached to a head portion 25, and the cap 30 can be turned upside down. This tube container 20 is
By touching the convex pattern 100 provided at the joint, the contents can be easily identified. The cap 30 is very convenient because it can be placed in a narrow space without obstruction, but the cap that can be used is not limited to this.

Next, an example of manufacturing the body of the tube container shown in FIG. 1 will be described.

FIG. 2 is a schematic view showing an example of an apparatus for manufacturing the body of the tube container according to the present invention. In the figure, 1 is a continuous sheet (original sheet) made of a synthetic resin laminated sheet for forming a body part for a laminated tube container, and this continuous sheet 1 includes a winding roller (not shown) to rollers 3a and 3b. The tube pressing belt 4 is sent out in a direction of an arrow a through a large number of rollers including the rollers, and each processing for forming a tube container is performed.

More specifically, as shown in FIG. 2, a mandrel 5 having a substantially elliptical cross section is provided over substantially the entire length of the main body of the apparatus, and rollers 6a disposed below both ends of the mandrel 5 are disposed. A tube pressing belt 4 that travels endlessly through a large number of rollers including 6b is provided.

Further, the inner surface steel belt 7 which runs endlessly in the direction shown by the arrow so as to be almost in contact with the lower surface and the upper surface of the mandrel 5 is passed through a large number of rollers including rollers 8a and 8b arranged at both ends. It is provided.

FIG. 3 is a schematic view showing the structure of a part of the outer surface steel belt 9. As shown in FIG. 3, the outer surface steel belt 9 has a convex portion 20 having a predetermined pattern.
0 is provided.

FIG. 4 is a sectional view of the apparatus of FIG. 2 taken along the line AA. This inner steel belt (band heater)
As shown in FIG. 4, an outer steel belt (band heater) 9 for the outer surface, which runs endlessly in the direction indicated by the arrow so as to almost contact the upper surfaces of the folded portions at both ends of the continuous sheet 1 as shown in FIG. Arranged rollers 10a, 1
It is provided via a large number of rollers including 0b.

Further, as shown in FIG. 4, drum-shaped belt pressing rollers 11 are arranged on both sides of the mandrel 5, and the tube pressing belt 11 is fixed to both sides of the tube pressing belt 4 by the belt pressing rollers 11. It is designed to be pressed toward the upper surface of the mandrel 5.

Reference numeral 12 in the drawing denotes an inner surface heating coil for heating the inner surface steel belt (band heater) 7, and 13 denotes an outer surface steel belt (band heater).
Reference numeral 15 is an outer surface heating coil for heating 9, reference numeral 15 is a cooling plate for cooling the overlapping portion of both side edge portions of the continuous sheet 1, and reference numeral 16 is a tube cutter.

In such an apparatus, first, the continuous sheet 1 is introduced between the tube pressing belt 4 and the inner surface steel belt (band heater) 7 as shown in FIG. Be guided. that time,
The continuous sheet 1 is formed by the tube pressing belt 4 that is bent and bent upward by the belt pressing roller 11.
Both side edges of the continuous sheet 1 are gradually woven upward, and finally, by the steel belt (band heater) 9 for the outer surface, the inclined surfaces of the both side edges (joint portions) of the continuous sheet 1 are mutually formed on the upper surface of the mandrel 5. Will be overlaid.

FIG. 5 is an enlarged view of the vicinity of the upper surface of the mandrel 5 in FIG.

As shown in FIG. 5, the continuous sheet 1 is
Between the inner surface steel belt (band heater) 7 heated by the inner surface heating coil 12 and the outer surface steel belt (band heater) 9 having the recess 200 heated by the outer surface heating coil 13 in a state of being overlapped with each other. It runs, is heated and pressed, and is fused. At this time, at the same time, the continuous sheet 1 is formed by the recesses 200 having a predetermined pattern provided on the outer steel belt (band heater) 9.
Are heated and pressed to form a convex pattern 100 on the outer surface.

Then, after being cooled by the cooling plate 15,
It is cut into a desired length by the tube cutter 16 and sent to the next step.

The recess 200 of the outer steel belt 9 is
For example, when the steel belt 9 has a width of 10 mm, the diameter is set in the range of 0.3 to 0.7 mm. The resulting protrusion has a synthetic resin laminate sheet stock thickness of about 400.
In the case of ˜550 μm, for example, about 150 from the original surface.
The height is set to μm. Recess 2 at this time
The height of 00 can be appropriately set according to the thickness of the joint portion of the synthetic resin laminated sheet.

The thickness of the joint portion of the synthetic resin laminated sheet differs depending on the manufacturing method of the body portion. 6 and 7 are cross-sectional views showing examples of overlapping portions of the synthetic resin laminated sheet. As shown in FIG. 6, as a manufacturing method of the body, for example, there is a method in which inclined surfaces obtained by obliquely cutting both joint ends of a synthetic resin laminated sheet beforehand are overlapped along the inclined surface and joined. . When the thickness of the synthetic resin laminate sheet stock is about 400 to 550 μm, the joint portion thus obtained is about 50.
It has a thickness of 0 to 600 μm. Also, as another method,
For example, as shown in FIG. 7, there is a method in which both joint ends of a synthetic resin laminated sheet are simply overlapped and joined. The thickness of the joint thus obtained is about 600 to 700 μm. The method of the present invention can use either method, but it is preferable to use the method shown in FIG. 6 because there are few steps in the joint and a good appearance can be obtained.

As shown in FIGS. 6 and 7, the synthetic resin laminated sheet comprises, for example, an intermediate layer 32 containing a metal foil or a synthetic resin film and heat-fusible resin layers 31, 33 provided on both sides thereof. Composed.

As the heat-fusible resin, heat-fusible resins such as polyester, polyethylene, polyacrylonitrile and ethylene-vinyl alcohol copolymer can be used. As each heat-fusible resin film, those which can be heat-bonded to each other are selected, but it is preferable to use the same heat-fusible resin film.

The intermediate layer may be a gas barrier film such as a metal foil such as an aluminum foil, a metal or metal oxide vapor deposition film, an inorganic material or an inorganic oxide vapor deposition film, and a resin film having a melting point that does not melt during heat fusion, such as a void. It is possible to use ethylene terephthalate, stretched nylon, stretched ethylene vinyl alcohol copolymer and the like, and the same films as the above inner layer and outer layer.

Other examples of the synthetic resin laminated sheet include, for example, low density polyethylene / low density polyethylene / uniaxially stretched polyethylene / low density polyethylene / milky polyethylene / methylene methacrylic acid copolymer (EMAA) / aluminum foil / EMAA / low. Examples include a laminated sheet made of high density polyethylene, a laminated sheet made of low density polyethylene / low density polyethylene / uniaxially stretched polyethylene / low density polyethylene / milky white polyethylene / low density polyethylene / silicon oxide deposited polyethylene terephthalate / low density polyethylene.

In the above embodiment, the shape of the concave portion for surface processing formed on the outer surface steel belt is circular, but the present invention is not limited to this, and any shape, for example, a pattern such as a character may be used. good.

[0034]

According to the present invention, it is possible to provide a tube container with a surface treatment in which the contents of the container can be identified by touching.

Further, by the method of the present invention, at low cost,
A tube container with a surface treatment can be easily manufactured with high productivity.

[Brief description of drawings]

FIG. 1 is a front view showing an example of a tube container of the present invention.

FIG. 2 is a schematic diagram showing an example of an apparatus for manufacturing a body of a tube container according to the present invention.

FIG. 3 is a schematic view showing a part of the structure of the outer steel belt.

4 is a sectional view of the device of FIG. 2 taken along the line AA.

5 is a partially enlarged view of FIG.

FIG. 6 is a cross-sectional view showing an example of an overlapping portion of a synthetic resin laminated sheet.

FIG. 7 is a cross-sectional view showing another example of the overlapping portion of the synthetic resin laminated sheet.

[Explanation of symbols]

 1 ... Continuous sheet 2 ... Device body 3a, 3b ... Roller 4 ... Tube pressing belt 5 ... Mandrel 7 ... Steel belt for inner surface 8a, 8b ... Roller 9 ... Steel belt for outer surface 15 ... Cooling plate 17 ... Winding roller 19 ... Roller 20 ... Container 21 ... Body 31 ... Outer layer 32 ... Intermediate layer 33 ... Inner layer 100 ... Convex pattern 200 ... Surface processing recess

Claims (2)

[Claims] 1. A tube container having a cylindrical body part integrally wound by winding a synthetic resin laminated sheet and thermocompressing the obtained overlapping part, and an uneven pattern is formed on the thermocompression bonded part. A tube container with a surface treatment, characterized in that: 2. A method for producing a tube container, which comprises the steps of winding a synthetic resin laminated sheet and thermocompressing the obtained overlapping portion to form a tubular body portion integrally joined to the tubular container. On the inner surface and the outer surface of the body so as to face each other so as to rotate parallel to the longitudinal direction of the body, and at least on the inner surface side, a concavo-convex pattern for surface processing the synthetic resin laminated sheet is provided. A method of manufacturing a tube container with surface treatment, wherein the surface treatment of a synthetic resin laminated sheet is performed simultaneously with thermocompression bonding using a pair of heating belts.