JP2007022556A - Cuplike container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To further improve appearance, in a cuplike container having a container body of a thin-walled injection molded product externally covered with a cylindrical label. <P>SOLUTION: According to the cuplike container 1, the thermally shrinkable cylindrical label 3 is attached to the exterior of the bottomed cylindrical container body 2 having an open top, which container body 2 is made of an injection molded thermoplastic resin. A number of vertical ribs 21b extending vertically are formed to project inward on the inner peripheral surface of the container body 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cup-shaped container for storing a confectionery such as a chocolate confectionery, for example.

  Conventionally, for example, as shown in FIG. 6, a large number of vertical ribs 51 a extending in the vertical direction are radially provided on the outer peripheral surface of a bottomed cylindrical container body 51 made of a thin injection molded product. A cup-shaped container 50 having a heat-shrinkable cylindrical label 52 mounted outside is known (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2000-153848

  Since the cup-shaped container 50 can obtain a heat insulation effect by an air layer formed between the outer peripheral surface of the container main body 51 and the cylindrical label 52 by a large number of vertical ribs 51a, for example, instant food such as cup noodles Thus, it is suitable as a container for containing dry food that can be poured and poured with hot water.

  By the way, in the cup-shaped container 50, since many vertical ribs 51a are radially provided on the outer peripheral surface of the container main body 51, the cylindrical label 52 attached to the outside thereof is bent by the vertical ribs 51a. The surface of the cylindrical label 52 appears to have vertical stripes. The cylindrical label 52 displays characters, designs, etc., but the vertical stripes appear on the surface of the cylindrical label 52, which may affect the appearance of characters, designs, etc. in some cases. There is room for improvement in the appearance of the cup-shaped container 50.

  Then, the place made into the subject of this invention is aiming at the further improvement of the external appearance in the cup-shaped container by which the cylindrical label was mounted | worn on the outer side of the container main body which is a thin injection molded product.

  In order to achieve the above object, the present invention provides a cup shape in which a heat-shrinkable cylindrical label is attached to the outside of a bottomed cylindrical container body that is opened upward and is made of a thermoplastic formed by injection molding. In the container, a cup-shaped container characterized in that a large number of vertical ribs extending in the vertical direction are formed on the inner peripheral surface of the container main body so as to protrude inward.

  In the cup-shaped container of the present invention, the outer peripheral surface of the container main body is a circumferential surface having no irregularities by projecting a large number of vertical ribs on the inner peripheral surface of the container main body. A label is attached. Accordingly, the cylindrical label can be brought into close contact with the outer peripheral surface of the container body having no irregularities, and the surface of the cylindrical label is also a clean circumferential surface without irregularities.

  In addition, what is accommodated in the container body is separated from the inner peripheral surface of the container main body by a large number of parallel vertical ribs formed so as to protrude inwardly on the inner peripheral surface of the container main body. Thus, the contact area between the container and the container main body is reduced, and the heat of the hand holding the container main body is hardly transmitted to the container.

  According to the cup-shaped container of the present invention, the cylindrical label can be attached to the container body in a clean state with no irregularities on its surface, which may affect the appearance of characters and designs displayed on the cylindrical label. The effect that there is no absence is obtained, and the appearance of the cup-shaped container can be further improved.

  Further, according to the cup-shaped container of the present invention, the contact area between the container and the container main body accommodated in the container main body is small, and the heat of the hand holding the container main body is difficult to be transmitted to the container, An object can be protected from the heat from the outside, and the quality can be maintained even in a container that is easily affected by heat.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a perspective view of a cup-shaped container according to an embodiment of the present invention, FIG. 2 is a half sectional view of the cup-shaped container, FIG. 3 is a plan view of the cup-shaped container, and FIG. 4 is an enlarged view showing a portion B of FIG. FIG. 5 and FIG. 5 are sectional views showing vertical ribs.

  The cup-shaped container 1 according to the present embodiment includes a bottomed cylindrical container body 2 that is formed in a thin wall by injection molding using, for example, a thermoplastic plastic such as polypropylene or high-density polyethylene as a material. .

  The container body 2 has a cylindrical body portion 21 formed in a curved tapered shape that is recessed toward the central axis so as to have a small diameter toward the lower end portion, and a bottom portion 22 that closes the lower end portion of the body portion 21. The flange portion 23 protrudes radially outward from the upper end edge of the body portion 21, and the body portion 21 has a straight portion 21 a having a substantially constant diameter at the upper end portion thereof. The body portion 21 of the container body 2 is thin, but is formed to have a thickness of 0.2 to 0.4 mm so that a normal strength can be obtained. Specifically, the body 21 is formed to have a thickness of 0.25 mm. Moreover, the straight part 21a of the trunk | drum 21 is formed thicker than the other site | part, and is specifically formed in 0.5 mm.

  A large number of vertical ribs 21b extending in the vertical direction are formed on the inner peripheral surface of the barrel portion 21 of the container body 2 so as to protrude toward the inside of the barrel portion 21 (specifically, the center line of the barrel portion 21). Has been. Each of the vertical ribs 21b is formed continuously in the vertical direction at regular intervals in the circumferential direction of the container body 2 and over the entire length excluding the straight portion 21a of the trunk portion 21. Specifically, a total of 44 vertical ribs 21b are formed on the inner peripheral surface of the body portion 21 of the container body 2 at intervals of about 8 °.

  As shown in FIG. 5, the vertical rib 21 b has a substantially trapezoidal cross section, and the bottom side of the trapezoidal shape is connected to the inner peripheral surface of the body portion 21 of the container body 2. The vertical ribs 21b are formed to protrude inward with a uniform protruding amount with reference to the inner peripheral surface of the body portion 21 of the container body 2. Specifically, the vertical rib 21b has an upper side portion of 0.58 mm, a bottom side portion of 0.7 mm, and a protruding amount (a trapezoidal height) of 0.52 mm.

  The vertical rib 21b is indispensable for forming the body 21 of the container body 2 into a thin wall when the container body 2 is injection molded. That is, at the time of injection molding, molten plastic is injected from a single gate (pin gate) provided at a position corresponding to the center of the bottom molding space, but even if the body molding space is narrow, the molten plastic Flows evenly into the body forming space through the vertical rib forming space, so that the body 21 of the container body 2 can be formed thin.

  On the other hand, a cylindrical label 3 having heat shrinkability is attached to the outer peripheral surface of the barrel portion 21 of the container body 2 so as to cover the barrel portion 21 from the upper end to the lower end.

  The cylindrical label 3 is formed into a cylindrical body by overlapping and joining both end edges of a heat-shrinkable film having heat-shrinkability in the circumferential direction before mounting, and the inner surface of the cylindrical label 3 (container Characters, designs, etc. are printed on the surface of the main body 2 in contact with the body portion 21, and a heat-sensitive adhesive that is activated by heat at the time of heat shrinkage and exhibits adhesiveness is applied to the upper surface of the inner surface. Yes. The cylindrical label 3 is attached to the body 21 of the container body 2 by being heat-shrinked by heat treatment at a predetermined temperature with the body 21 of the container body 2 covered from below. At this time, since the heat-sensitive adhesive is activated by the heat at the time of heat shrinking and the cylindrical label 3 exhibits adhesiveness, the upper part of the inner surface of the cylindrical label 3 is bonded to the outer peripheral surface of the straight part 21a of the trunk part 21. The Thereby, the cylindrical label 3 is held without being displaced downward from the container main body 2 even when the cylindrical label 3 has a tapered shape with a small diameter toward the lower end along the trunk portion 21 of the container main body 2 due to heat shrinkability. Is done. In addition, since the cylindrical label 3 is attached to the body portion 21 of the container body 2 by heat shrinkability, even if the body portion 21 of the container body 2 has a curved taper shape, the cylindrical label 3 extends along the body portion 21 of the container body 2. It is mounted in close contact. In addition, the lower end of the cylindrical label 3 is in a state of wrapping under the trunk portion 21 of the container body 2.

  The heat-shrinkable film used for the cylindrical label 3 is not particularly limited, and examples thereof include polyester resins such as polyethylene terephthalate, olefin resins such as polypropylene, styrene resins such as styrene-butadiene copolymers, and cyclic olefin resins. A film having a thickness of 20 to 80 μm made of a resin, a vinyl chloride resin, a polylactic acid resin, a mixture of two or more of these, or the same or different laminates can be used. As the heat-shrinkable film, the body 21 of the container body 2 is thin as described above, and thus has excellent low-temperature shrinkability (the shrinkage rate when immersed in warm water at 80 ° C. for 10 seconds is 40% or more. ) A polyester resin or a styrene-based or polylactic acid-based resin having a low shrinkage stress (a shrinkage stress of less than 7 MPa when immersed in warm water at 90 ° C. for 10 seconds) is preferable.

  A seal lid (not shown) made of, for example, an aluminum foil and a laminate material such as a synthetic resin film or paper is attached to the flange portion 23 of the container body 2 in a peelable state, whereby the container body 2 is sealed. It has come to be.

  The cup-shaped container 1 having the above-described configuration has a circumferential surface in which the outer peripheral surface of the body portion 21 of the container body 2 is not uneven by forming a large number of vertical ribs 21b on the inner peripheral surface of the body portion 21 of the container body 2. The cylindrical label 3 is attached to the outer peripheral surface of the body portion 21. Therefore, the cylindrical label 3 can be attached in a state of being in close contact with the outer peripheral surface of the body portion 21 of the container main body 2 without unevenness, and the surface of the cylindrical label 3 can be a clean peripheral surface without unevenness. it can. Thereby, the effect that there is no possibility of affecting the appearance of characters and designs displayed on the cylindrical label 3 can be obtained, and the appearance of the cup-shaped container 1 can be further improved. In addition, since the cylindrical label 3 can be attached in close contact with the outer peripheral surface of the body portion 21 of the container main body 2, the cylindrical label is placed on a number of vertical ribs protruding from the outer peripheral surface of the container main body. Compared with the conventional container to be mounted from the above, the adhesion of the cylindrical label 3 to the body portion 21 of the container body 2 can be greatly increased, and the mounting strength of the cylindrical label 3 can be improved.

  Further, the cup-shaped container 1 is formed in parallel so that the contents accommodated in the container body 2 protrude toward the inside of the body part 21 on the inner peripheral surface of the body part 21 of the container body 2. The large number of vertical ribs 21b separate from the inner peripheral surface of the body portion 21 of the container body 2, so that the contact area between the contents in the container body 2 and the body portion 21 of the container body 2 is reduced. The heat in the hand gripping the body portion 21 of the container body 2 becomes difficult to be transferred to the contents in the main body 2, and the contents in the container body 2 can be protected from the heat from the outside. Therefore, the contents in the container main body 2 are easily affected by heat. For example, in the case of chocolate confectionery, it is possible to maintain quality by suppressing the melting of chocolate. In addition, since the contact area between the contents in the container body 2 and the body portion 21 of the container body 2 is small, it is difficult for heat to be transferred from the body 21 of the container body 2 to the container body. The cylindrical label 3 can be attached to the outer peripheral surface of the body portion 21 of the container main body 2 by heat shrinkage in a state in which an object that is easily affected by heat is accommodated in the container 2.

  Further, the cup-shaped container 1 is formed such that a large number of vertical ribs 21 b parallel to the body portion 21 of the container body 2 protrude toward the inside of the body portion 21. The strength in the diametrical direction can be improved as compared with the case where the portion 21 is flat without unevenness, and the trunk portion 21 of the container body 2 is deformed even if the barrel portion 21 of the container body 2 is gripped relatively firmly. The effect that it is hard to do is acquired.

  The present invention is not limited to the embodiment described above. For example, in the above-described embodiment, the chocolate confectionery is accommodated in the container body 2 as a contained item. However, other than the chocolate confectionery, for example, the confectionery that is easily affected by heat such as candy confectionery or the influence of heat. You may make it accommodate few confectionery. Incidentally, it is suitable for those whose surface is likely to be altered (softened, melted, viscous) at 25 ° C. or higher, particularly those whose surface is easily altered at 30 ° C. or higher.

  In the above-described embodiment, the body 21 of the container body 2 is formed in a curved taper shape. However, the body 21 of the container body 2 is formed into a straight taper shape or a cylindrical shape having a substantially constant diameter. You may make it form.

  Further, in the above-described embodiment, a heat-sensitive adhesive is applied to the upper part of the inner surface of the cylindrical label 3 so that the upper part of the inner surface of the cylindrical label 3 is bonded to the outer peripheral surface of the straight part 21 a of the trunk part 21 of the container body 2. However, a heat-sensitive adhesive may be applied to a portion other than the upper portion of the inner surface of the cylindrical label 3 so that the portion other than the upper portion of the inner surface of the cylindrical label 3 is adhered to the outer peripheral surface of the body portion 21 of the container body 2. .

  Further, in the above-described embodiment, the inner surface of the bottom portion 22 of the container body 2 is formed on a flat surface without unevenness, but a rib protruding inward of the container body 2 is formed on the inner surface of the bottom portion 22 of the container body 2 at the bottom portion. You may make it provide radially from the center of 22. FIG.

It is a perspective view of the cup-shaped container which concerns on embodiment of this invention. FIG. 4 is a half cross-sectional view of the cup-shaped container taken along line AA in FIG. 3. It is a top view of the said cup-shaped container. It is an enlarged view of the B section of FIG. 2 of the cup-shaped container. It is sectional drawing which followed the CC line of FIG. 4 which shows the vertical rib of the said cup-shaped container. It is a perspective view of the conventional cup-shaped container.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Cup-shaped container, 2 ... Container main body, 3 ... Cylindrical label, 21 ... trunk | drum, 21a ... Straight part, 21b ... Vertical rib, 22 ... Bottom part, 23 ... Flange part

Claims (1)

In a cup-shaped container in which a heat-shrinkable cylindrical label is attached to the outside of a bottomed cylindrical container body made of thermoplastic plastic formed by injection molding,
A cup-shaped container characterized in that a large number of vertical ribs extending in the vertical direction are formed on the inner peripheral surface of the container body so as to protrude inward.

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