JP2003341716A - Method for manufacturing multiple portion cup, method for manufacturing composite sheet for multiple portion cup - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method which can be used to manufacture a multiple portion cup comprising portion cups having two or more kinds of different colors stably and at a low cost. <P>SOLUTION: The method for manufacturing the multiple portion cup made by coupling a plurality of cup-like portion cups at their top edge portions has a process of obtaining a film for giving a color by connecting together the tapes themselves of different colors at the edge portion in a long side edge of their tapes with each other, a process of obtaining a composite sheet by laminating the film for giving the color onto a base sheet, and a process of obtaining the multiple portion cup by using the composite sheet with a thermal forming method in this order. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a multiple potion cup which is frequently used as a cup for jelly, yogurt and the like.

[0002]

2. Description of the Related Art Two or three or more resin portion cups for foods such as jelly or yogurt which are eaten for one person and which are connected to each other at their upper edges are mainly thermoplastic. Sheet thermoforming,
In particular, it is manufactured by the vacuum forming method. Most of the multiple potion cups used in current commercial potion cup foods are monochromatic.

Here, a multiple potion cup in which the color of each single potion cup is made different and which can be easily and stably manufactured by the present invention will be described with reference to FIG.

FIG. 1 (a) shows an example (perspective view) of a multiple potion cup consisting of four pieces in which two potions of two colors and the same color are arranged in two rows and two columns. A bottom view of this example is shown in FIG.

In addition, FIG. 1C shows an example (perspective view) of a multiple potion cup having six colors in which two potions of three colors and two of the same color are arranged in three rows and two columns. ,Also,
A bottom view of this example is shown in FIG.

Further, FIG. 1 (e) shows an example (perspective view) of a multiple potion cup having four colors, in which four potions of the same color are arranged in four rows and one column. A bottom view of this example is shown in FIG.

In all of these examples, the color of the cup top surface (side surface) (red, yellow, orange,
Unlike cream, etc.), the food is white so that the food does not feel uncomfortable.

The following studies have been made on such multiple potion cups, but there are various problems.
Both are still in the prototype stage and have not been put into practical use. One of such attempts is coloring by printing. That is, the resin sheet for multiple potion cups,
A method was conceived in which after molding, each single portion cup was colored by printing so as to have a different color, and then vacuum molding was performed. However, the thickness of the colored layer formed by printing is as thin as 0.5 to 10 μm, and in forming the portion cup, the “drawing” at the time of molding is tight, and the degree also varies from part to part. There was a problem that the appearance of the potion cup was inferior due to the occurrence of color shading.

Another approach is to coextrude resins having different colors to form portions having different colors in the sheet width direction. The sheet production by the coextrusion is shown as a model in FIG.

The die used for extrusion is an extruder (not shown).
The number of extruders required corresponds to the number of colors to be used, and the higher the number of colors, the higher the equipment cost of the extruder. In addition, even when the number of colors used for molding is temporarily reduced, it is difficult to temporarily divert the extruder to another application, and thus it cannot be effectively used.

Further, when the color width is changed, it is necessary to replace it with another die, and the equipment cost of the die is high. Also, when changing the color, it is necessary to clean the extruder,
Therefore, labor and time are required.

Further, in actual production, it is assumed that it takes a long time for the conditions to stabilize after the temperature and discharge pressure of several extruders used for each color have been adjusted. The width of the zone is not stable and is not good. In addition, even if it stabilizes once, the width of the color zone may change due to the influence of various conditions.
As shown in (a) and (b), it becomes a defective part when forming the potion cup, and the product value is remarkably reduced.
Practically unusable. As described above, there is practically no method for producing a multi-portion cup having two or more colors, which is stable in quality and which is effective in switching color combinations.

[0013]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned conventional problems, that is, it is possible to stably produce a multiple potion cup consisting of two or more potion cups of different colors at a low cost. The purpose is to provide a method.

[0014]

In order to solve the above-mentioned problems, the method for producing a multiple potion cup of the present invention is intended to solve the above-mentioned problems.
As described in, in a method for producing a multiple potion cup in which a plurality of cup-shaped portion cups are connected at their upper edges, tapes of different colors are joined together at the edges of the long sides of the tapes to impart color. A multiple potion having a step of obtaining a film, a step of laminating the color-imparting film on a base sheet to obtain a composite sheet, and a step of obtaining a multiple potion cup by a thermoforming method using the composite sheet in this order. It is a method of manufacturing a cup.

According to the method for producing a multiple potion cup of the present invention, the multiple potion cup having two or more types of potion cups having different colors and having no defect is stably and inexpensively produced by the above-mentioned unique constitution. be able to. Furthermore, it is easy to change colors, and it is possible to easily meet various needs.

The multiple potion cups produced by such a production method have a strong appeal because they are noticeable even when they are displayed at the food counter at the same time as the foods used internally in the similar multiple potion cups. , For example, yellow side for banana flavored food, orange for orange flavored food, red for strawberry flavor, brown for chocolate flavor, etc.,
By matching the side of the potion cup with the color of the food to be included, it is possible to appeal from the angle of view also the content of multiple types of products included in the end consumer and, by extension, the variety of tastes of those foods. Since it becomes possible, it is possible to have a sales promotion effect of the product.

Further, in the method for producing a composite sheet for multiple potion cups according to the present invention as set forth in claim 8, for producing a multiple potion cup in which a plurality of cup-shaped portion cups are connected at their upper edges. In the manufacturing method of the composite sheet, the step of connecting the tapes of different colors to each other at the edges of the long sides of the tapes to obtain a color-imparting film,
A method for producing a composite sheet for multiple potion cups, which comprises, in this order, a step of laminating the color-imparting film on a base sheet to obtain a composite sheet, which enables stable production of multiple potion cups at low cost. A composite sheet for potion cups can be easily obtained.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION In the method for producing a multiple potion cup of the present invention, in the step of joining tapes of different colors to each other at their long side edges to obtain a color-imparting film, the tape used is usually It is easy to mold the potion cup in the post process because it is made of thermoplastic resin used for potion cup application, polypropylene, polystyrene, or a mixture of polypropylene and polystyrene with a pigment added as needed. Is preferred. The reason why the tape is used as described above is to increase the length of the resulting color-imparting film, and thus the composite sheet, so that the multiple potion cups can be continuously molded.

For the purpose of the present invention, it is necessary to join the tapes of the same color such that the tapes of the same color are not adjacent to each other, for the purpose of the present invention.
At this time, the tapes are joined so that they are parallel to each other, except in special cases.

When the tapes are connected to each other at their long side edges, a method such as heat fusion or adhesion with an adhesive can be used. At this time, the edges may be joined so that they overlap each other, or the long sides may be butted and the butted portions may be joined.

The thickness of the tapes to be joined together is preferably the same except for special cases, and 20
It is desirable that the thickness is at least μm and at most 400 μm. 20μ
If the thickness is less than m, the color of the portion may become lighter at the time of molding the potion cup, and the color of the portion may become lighter.
If it is more than μm, the winding length of the wound tape becomes short, and the number of times the tape is relayed increases accordingly, which causes a problem that the loss becomes large.

After joining the tapes in this manner to obtain a color-imparting film, the color-imparting film is laminated on a base sheet to obtain a composite sheet. The base resin forming the base sheet is preferably the same as the base resin forming the color tape, from the viewpoint of moldability of the potion cup in the subsequent step.

Since the base sheet is arranged on the content side of the potion cup, its color, pattern, etc. are determined in consideration of the content, but when yogurt, jelly, etc. are the content, white is generally used. Target.

The thickness of the base sheet depends on the thickness of the above-mentioned color-imparting film, but a thin one classified as a film can be used, but it is usually 100 μm or more 10
It is desirable that the thickness is 00 μm or less. If the thickness is less than 100 μm, the strength required for the portion cup may not be obtained in some cases, while if the thickness is more than 1000 μm, it becomes difficult to mold the portion cup, and the material becomes wasted due to over-specification and the cost increases.

When a color-imparting film and a base sheet as described above are laminated to obtain a composite sheet, they can be laminated by arranging an adhesive layer between them, as is usually done. According to the extrusion lamination method of simultaneously laminating the color-imparting film while molding the base sheet by extrusion molding, an adhesion step at the time of lamination is unnecessary, and an adhesive or an adhesive film can be also unnecessary.

When the color-imparting film and the base sheet are laminated, a gas barrier layer made of various gas-barrier films may be laminated between them to impart a gas barrier property to the resulting potion cup, and a multiple potion cup. The use as can be further widened.

Alternatively, the same effect can be obtained by using a base sheet having a gas barrier layer inside, for example, the base sheet itself has a three-layer structure and the central layer is a gas barrier layer. The present invention also includes the case where a bus barrier layer is used in combination as described above.

A multiple potion cup is molded using the composite sheet thus obtained. Thermoforming, which is a usual method for forming multiple potion cups, particularly vacuum forming, has extremely high productivity, and conventional equipment for forming multiple potion cups can be used as it is.

After that, a necessary unit is cut and processed so as to remove unnecessary portions, and finished as a multiple potion cup.

The method for producing the multiple potion cup of the present invention will be described below with reference to specific examples. A colored film is obtained by T-die extrusion or the like, and if necessary, a tape having a desired constant width is obtained by a slitter or the like. These tapes 1a to 1d of different colors are arranged in a predetermined combination (see FIG. 4 (a)), the long side directions are abutted and joined by heat fusion to obtain the color imparting film 1 (see FIG. 4 (b)). ).

A white base sheet 2 is extruded and laminated on the color-imparting film 1 (extrusion lamination method) to obtain a composite sheet B. Since the layers are laminated by the extrusion lamination method as described above, an adhesive or a bonding step is unnecessary.

FIG. 5 shows the process of using the composite sheet B to form a multiple potion cup by the vacuum forming method. While preheating, the composite sheet b is introduced into the vacuum forming machine so that the base sheet 2 side becomes the mold 3 side (see FIG. 5A), and FIG.
After vacuum forming as shown in FIG.
(See (c)), and then cut into necessary units so as to remove unnecessary portions and finish as a multiple potion cup to obtain a multiple potion cup as shown in FIGS. 1 (e) and 1 (f). can get. At this time, since the width of each color zone of the composite sheet is a predetermined constant width corresponding to the width of each tape in FIG. 4A, the boundary of the color zone can be reliably positioned at a desired position. Therefore, it is easy to make a multi-colored, multi-portion cup without defects, and stable production is possible.

[0033]

According to the method for producing a multiple potion cup of the present invention, a multiple potion cup comprising two or more potion cups having different colors and having no defects can be stably prepared.
And it can be manufactured at low cost, and at this time,
It is easy to change colors and can easily meet various needs.

[Brief description of drawings]

FIG. 1 is a model diagram showing an example of a multiple potion cup that is stably and inexpensively produced by the method for producing a multiple potion cup of the present invention. (A) A model perspective view showing an example of a multiple potion cup in which two potions of two different colors are combined. (B) It is a model bottom view of the multiple potion cup of (a). (C) A model perspective view showing an example of a multiple potion cup in which two potions of three different color potions are combined. It is a model bottom view of the multiple potion cup of (d) and (c). (E) A model perspective view showing an example of a multiple potion cup in which four potions of different colors are combined one by one. It is a model bottom view of the multiple potion cup of (f) and (e).

FIG. 2 is a model view showing the production of multiple potion cup raw material sheets by coextrusion.

FIG. 3 is a diagram showing a problem that occurs when the raw material sheet according to FIG. 2 is used. (A) is a model perspective view showing a state in which a defective portion has occurred in an example of a multiple potion cup in which two potions of three kinds of different colors are combined. (B) It is a model bottom view of the multiple potion cup of (a).

FIG. 4 is a model diagram (1) showing a method for producing a multiple portion cup according to the present invention. (A) It is a figure showing the state where tapes with different colors were arranged in parallel. (B) It is a figure which shows the color-imparting film 1 obtained by butting together the edge part of the long side of the said tape, and joining by welding. (C) It is a figure which shows the composite sheet B obtained by laminating the color provision film 1 on the base sheet 2.

FIG. 5 is a model diagram (No. 2) showing a forming process of a multi-colored multiple portion cup by a vacuum forming method using the composite sheet B. It is a figure which shows the state where (a) composite sheet A was introduce | transduced into the molding machine. (B) It is a figure which shows the state during shaping | molding. (C) It is a figure which shows the state after mold release.

[Explanation of symbols]

1a-1d different colored tapes 1 Color imparting film or color imparting film layer 2 Base sheet or base sheet layer 3 Vacuum forming mold A Multiple potion cup according to the present invention B composite sheet

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) // B29K 23:00 B29K 23:00 25:00 25:00 B29L 7:00 B29L 7:00 22:00 22:00 F-term (reference) 3E033 AA11 BA13 BB05 CA16 DA08 DD01 EA09 FA01 GA02 3E050 AA03 AA05 AA10 AB02 CC10 DA03 3E086 AA22 AD06 BA04 BA15 BB01 BB61 CA01 DA08 4F208 AA11 AA13 AC03 AG03 AG07 A11 MB22 MG22 MG04 MA22

Claims (8)

[Claims] 1. A method for producing a multiple potion cup in which a plurality of cup-shaped portion cups are connected at their upper edges, wherein tapes of different colors are joined together at the edges of the long sides of the tapes to form a color. A step of obtaining an application film, a step of laminating the color application film on a base sheet to obtain a composite sheet, and a step of obtaining a multiple potion cup by a thermoforming method using the composite sheet, in this order. A method for producing a multi-portion cup having a characteristic feature. 2. The multiple strip according to claim 1, wherein the resin forming the tape is the same as the resin forming the base sheet, and the thickness of the tape is 20 μm or more and 400 μm or less. Potion cup manufacturing method. 3. When the above-mentioned tapes of different colors are joined together at the edges of the long sides of the tapes to obtain a color-imparting film, they are joined together by heat fusion or adhesive bonding. Manufacturing method for multiple potion cups. 4. The base sheet according to claim 1, wherein the base sheet is formed by extrusion molding either polypropylene, polystyrene, or a mixture of polypropylene and polystyrene. Method for manufacturing multiple potion cups of. 5. The method for producing a multiple potion cup according to claim 4, wherein the color-imparting film is laminated by an extrusion lamination method when laminating the base sheet during extrusion molding. 6. A gas barrier layer is laminated between the base sheet and the color-imparting film.
The manufacturing method of the multiple potion cup according to claim 3. 7. The base sheet according to claim 1, wherein the base sheet has a gas barrier layer therein.
The method for producing a multiple potion cup according to any one of 1. 8. A method for producing a composite sheet for producing a multiple potion cup in which a plurality of cup-shaped portion cups are connected at their upper edges, wherein tapes of different colors are joined to each other on the long side edges of the tapes. A method for producing a composite sheet for multiple potion cups, which comprises, in this order, a step of connecting the parts to obtain a color-imparting film and a step of laminating the color-imparting film on a base sheet to obtain a composite sheet.