JP2003237851A - Instant noodle storage paper cup - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an instant noodle storage paper cup which is free from flaws on a side face and damages to the paper cup due to a pressure applied to the paper cup by an increase in volume of instant noodles with moisture absorbed. <P>SOLUTION: The paper cup comprises a barrel (11) and a bottom (12), and a periphery of an opening has a rim (13) curled outwardly. An annular dent (14) protruding inwardly is formed in a peripheral direction immediately below the rim of the barrel (11). A portion where the dent (14) is formed covers at least an edge of a surface of the instant noodles (20) received by a predetermined amount. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper cup for containing instant noodles that can be eaten and drink as it is by pouring boiling water,
The present invention relates to a paper cup for storing instant noodles, which uses a polyolefin resin-processed paper having a relatively inexpensive layer structure.

[0002]

2. Description of the Related Art Conventionally, the body or bottom of a paper cup that contains instant noodles that can be drunk and poured by boiling water is usually
To prevent the noodles from swelling and quality deterioration due to moisture absorption,
Considering water vapor permeability, low density polyethylene (L
A polyolefin-based resin-treated paper obtained by applying a polyolefin-based resin such as DPE) resin or high-density polyethylene (HDPE) resin to paper such as cup base paper has been used.

Thus, from the viewpoint of the material, the hygroscopicity of the noodles is prevented to prevent the appearance of the paper cup and the destruction of the noodles. On the other hand, giving the uneven shape to the circumferential direction of the body portion of the paper cup is generally for the purpose of giving a bathing line or handling property (preventing slippage),
It was done.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a paper cup containing an instant noodle containing paper cup is increased in volume (diameter) due to moisture absorption of the instant noodle without using a material composition having a relatively high level of moisture resistance. An object of the present invention is to provide a structure of an instant noodle-containing paper cup that is not pressed and is not damaged or destroyed on the side surface of the paper cup.

[0005]

According to a first aspect of the present invention, a paper cup having a mouth and a bottom and having a curled outer edge at the periphery of the opening is provided immediately below the edge of the torso. An instant noodle-accommodating paper cup, characterized in that an annular recess projecting inward in the circumferential direction is formed.

Thus, according to the invention of claim 1,
Since the annular concave portion that projects inward in the circumferential direction is formed just below the mouth edge of the paper cup body, even if the stored instant noodles expand in volume due to moisture absorption, the expansion of the instant noodles is absorbed by the annular concave portion, and the paper cup body Parts are not damaged or destroyed. The annular recess may be formed continuously or discontinuously, for example, in a dotted line shape. Also, one or a plurality of them may be provided.

Further, the invention of claim 2 is characterized in that, in the invention of claim 1, the formation portion of the annular recess is a portion which is caught on at least an end portion of the surface of the instant noodle contained in a predetermined amount. An instant noodle-containing paper cup.

Thus, according to the invention of claim 2,
Since the formation location of the annular concave portion is a portion that is caught at the end portion of the surface of the instant noodles containing at least a predetermined amount, even if the instant noodles expand in volume due to moisture absorption, the annular concave portion can effectively absorb the expansion of the instant noodles. it can.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below based on one embodiment. The instant noodle-containing paper cup of the present invention is
For example, as shown in FIG. 1, the body (11) and the bottom (1
(2) A structure in which an annular recess (14) protruding inward in the circumferential direction is formed immediately below the rim of the body of a paper cup having a rim (13) in which the periphery of the opening curls outward. It consists of

The annular recess (14) may be formed continuously or discontinuously, for example, in a chain line shape or a dotted line shape. The thickness and the number of the annular recesses are arbitrary. However, at least as shown in the drawing, it is necessary to form so that the end portions of the surface of the stored instant noodles (20) are in contact with each other.

The paper cup used in the present invention has a body portion (1
Both the body member forming 1) and the bottom member forming the bottom portion (12) are coated with a polyolefin-based resin such as LDPE resin or HDPE resin on both sides or one side of a cup base paper having a basis weight of about 170 to 400 g / m ^2. The polyolefin resin processed paper coated with about 40 μm can be prepared by setting the polyolefin resin surface inside with a generally known paper cup molding machine.

The annular recess (14) is generally formed simultaneously with the formation of the lip (13) during the molding of the paper cup.

[0013]

The present invention will be described in detail with reference to the following examples. Example 1 First, as a body member forming a body portion and a bottom member forming a bottom portion, a 20 μm-thick LDPE resin (density: 0.9) was formed on one surface of a cup base paper having a basis weight of 250 g / m ^2.
Polyethylene processed paper coated with 13 g / cm ³ ) was prepared.

Next, using this polyethylene-treated paper,
Use a standard paper cup molding machine to clean the LDPE resin surface.
Inside, height; 98 mm, caliber; 88 mm, bottom diameter;
65mm, taper angle; 6 °, 70mm from bottom
Width at height; indentation at 2 mm; 0.8 mm
Having continuous annular recesses (caliber between recesses; 75 mm),
In addition, the edge of the opening has a curled edge on the outside.
The paper cup of Example 1 was prepared. In addition, the transparency of this paper cup
Humidity is 40 ° C, 90% RH. 28g / m under the condition ²
・ Day (according to JIS Z0208).

<Comparative Example 1> In the process of producing the paper cup of Example 1, a paper cup having no annular recess is produced, and Comparative Example 1
It was a paper cup. The water vapor permeability of this paper cup was 40 ° C., 90% RH. 28g /
It was m ² · day.

<Comparative Example 2> A body member forming a body portion, and
250 g / m2 as the bottom member that forms the bottom part ²Mosquito
20μm thick HDPE resin (density;
0.925g / cm³) Coated polyethylene paper
No annular recess is provided as in Comparative Example 1 except that
A paper cup was prepared and used as the paper cup of Comparative Example 2. In addition,
The water vapor permeability of this paper cup is 40 ° C, 90% RH. Conditions
10 g / m²・ It was a day.

A total of three types of paper cups, one type for the example and two types for the comparative example, thus produced, and a height of 55 m
m, caliber; 76 mm, bottom diameter; 63 mm, taper angle;
The instant noodles of 7 ° and weight of 53 g were stored, and the opening was hermetically sealed with a lid material having a layer structure of paper (basis weight; 70 g / m ² ) / polyethylene / aluminum foil / polyethylene, and 40 ° C. 90% RH. Left in the atmosphere for 1 month,
Then, the condition of the paper cup was visually observed. The results are as follows.

That is, in the paper cup of Example 1, the instant noodles are pressed against the annular recess so that the annular recess is almost flat. However, no imprinted traces of instant noodles were found on the body except the annular recess. Further, no peeling was observed in the seal portion on the side surface of the body.

In the paper cup of Comparative Example 1, impressed noodles had a mark left on the body of the paper cup, and a pinhole was generated in the mark. Further, peeling was observed at the seal portion on the side surface of the body. The peeling was most severe near the opening.

In the paper cup of Comparative Example 2, no particular change was observed in the body portion of the paper cup or the seal portion on the side surface of the body portion.

From the above, a paper cup using polyolefin resin-processed paper having a moisture permeability of about 20 g / m ² · day by forming an annular recess in the body of the paper cup so as to correspond to the end of the instant noodles. It can be seen that even if the above is used, it can be used as a paper cup for containing instant noodles.

[0022]

As described above, as long as there is no deterioration in quality such as oxidation and flavor due to moisture absorption of instant noodles, a paper cup can be used as a container for storing instant noodles without using a material having a high level of moisture resistance. It can be used and can be found to be effective in reducing the weight and incineration calories.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional explanatory view showing an example of an instant noodle-containing paper cup according to the present invention.

[Explanation of symbols]

10 ... Paper cup 11 ... torso 12 ... bottom 13 rim 14 ... Annular recess 20 ... instant noodles

Claims (2)

[Claims] Claims: 1. A paper cup having a body and a bottom, the periphery of which is curled at the periphery of the opening, has an annular recess projecting inward in the circumferential direction immediately below the mouth of the body. An instant noodle-containing paper cup characterized by the following. 2. The instant noodle-containing paper cup according to claim 1, wherein the portion where the annular recess is formed is a portion that is caught at an end portion of the surface of the instant noodle that has been stored at least a predetermined amount.