JP6550432B2 - Double structure container and method of manufacturing the same - Google Patents

Description

  The present invention relates to a dual structure container, more specifically, a dual structure in which a cover encloses a container body for containing a drink therein, and insulates the inside and the outside from hot drink even if it is placed inside the container, The present invention relates to a dual-structure container which can be easily grasped by a user and a method of manufacturing the same.

  In general, the dual-structure container is a container used for the purpose of containing hot drinks such as coffee and soup and being able to be easily held by the user while the heat insulation is maintained. .

  The double-layered container is made of a material such as paper or plastic which is harmless to the human body, and a space is secured between the inner container and the outer container, or the thickness of the container is adjusted to maintain heat insulation. Such a double container is, as illustrated in FIG. 1, a cylindrical inner container (20) having an outward curling part (21) wound at the upper end on the outer side, and the lower end of the inner container (20) And a lower cover (30) coupled to the part and an outer container (10) coupled to the outside of the inner container (20). The outer container (10) is connected to the inner container (20) while forming an inward curling portion (11) having a lower end portion wound inward, wherein the inward curling portion (11) is internally formed as shown in (a). It may be joined to the outer surface of the container, or may be joined to the lower cover (30) while accommodating the lower end of the inner container as shown in (b).

  As shown in FIG. 2, the outer container (10) is in the fan-like shape, and the inner container (20) is surrounded in a cylindrical shape with a small diameter at the lower end while both ends are overlapped and joined. At the same time, the lower end portion is wound inward to form the inward curling portion (11), and when the cylindrical lower end portion of thick material is wound inward, strong resistance appears to cause buckling to eliminate the resistance (buckling The wrinkles are formed on the inward curling portion (11) due to the phenomenon. Therefore, when the inward curling portion (11) is formed at the lower end portion of the outer container, the resistance is not easily wound due to the resistance, and such resistance appears more strongly as the material of the container is thicker, and the curling portion is not easily formed. There is.

  In order to solve the problems as described above, Japanese Utility Model Registration No. 2571797 and Japanese Patent Publication No. 2002-255147 etc. have one end (10 ') of the outer container (10) as shown in FIG. There is disclosed a technique of forming a cut portion (12) in which the edge of the overlapping region is obliquely cut and forming a curling portion by winding the lower end portion inward. However, the forming technique of the curling portion such as the above-mentioned prior art is based on only the other side end (10 ′ ′) of the outer container (10) at the end of the lower end by forming the cut portion (12) in the oblique direction. The non-overlapping area is wide and relatively easily wound, but the overlapping area of one side end (10 ′) and the other side end (10 ′ ′) gradually becomes wider toward the inside, and it is not easy to be wound. There is.

  In addition, since the double container generally has a structure in which the upper diameter is relatively large and the lower diameter is relatively small, when the lower end is curled inward, the ends are relatively large in diameter at the upper and lower sides. It is curled towards. At this time, the lower end is curled while being slipped in the direction of being separated by the large diameter in a portion where the both ends (10 ′, 10 ′ ′) of the outer container are overlapped. After the entire overlapping region including the part is joined, the lower end part is curled, so that the slip is interrupted by the joining and the formation of the curled part becomes difficult. Cutting in an oblique direction, in which the parts are cut out with a relatively large width, causes a problem that the lower ends of both side ends are separated from each other after curling.

True No. 2571797 Japanese Patent Application Publication No. 2002-255147

  The present invention has been proposed to solve the above problems, and in a double-structured container comprising an inner container and an outer container, the curling portion is easily formed at the lower end of the outer container. It is an object of the present invention to provide a method of forming a curling portion that enables to make it possible, and an outer container structure therefor.

The present invention for achieving the above objects is to have a predetermined width and length in a double-structured container in which the outer container surrounds the surface of a cup-shaped inner container with a cover attached to the lower part. In the unfolded outer container, one side end portion constitutes a bonding portion of a predetermined width , the lower end portion constitutes a curling portion of a predetermined width, and in the common region of the bonding portion and the curling portion , A cutting portion partially cut into a rectangular shape at a lower right portion of the common area, a rectangular supporting portion having a width shorter than a longitudinal width of the curling portion at a lower end of the bonding portion , and the curling portion The support portion and the support portion are formed such that a rectangular shielding portion having a width shorter than the lateral width of the adhesion portion is formed at the end portion of the adhesion portion, and the support portion constitutes a free end at the end of the adhesion portion. Between the shields Until the maximum width parts and configured to cut, in rolled up state in the longitudinal direction along the surface of the inner container, the shielding portion of the one side end portion which is superimposed with the curling portion of the other side end portion After that, the curling parts are slipped with each other in the process of being curled inwards, and the support parts are configured to be curled while supporting the curling parts in the area where the curling starts at the inner side.

Here, the bonded joints adhesive surface is formed on an outer surface, the adhesive surface characterized in that it is formed above the position spaced apart from the common area.

Before SL shielding section, characterized in that the width spaced apart from the end of the more the curling portion toward the lower end of the curling portion is increased.

In order to achieve the above object, the method for producing a container having a double structure of the present invention comprises the steps of: (a) forming an outward curling portion on the upper portion of the cup-shaped inner container; B) bonding the cover to the lower opening of the inner container and sealing it, and (c) preparing the outer container in a state of being expanded to have a predetermined width and length, the outer container being on one side end constitutes an adhesive portion having a predetermined width, the lower end constitutes a inward curling portion of a predetermined width, in the common area of the said adhesive portion inward curling portion, a portion in the lower right portion of the common region The rectangular cutting portion cut out in a rectangular shape, the rectangular support portion having a width shorter than the longitudinal width of the inward curling portion at the lower end of the adhesive portion, and the adhesive portion at the adhesive portion end of the inward curling portion A width less than the horizontal width of the To form a shield portion of the shape, so that the support unit constitutes a free end at the end of the adhesive portion, and a step of cutting between the shielding portion and the supporting portion to the maximum width of the inward curling portion, (D) winding the outer container longitudinally in the longitudinal direction so that the shielding portion and the inward curling portion of the other end overlap, and bonding the outer surface of the bonding portion to the inner surface of the other end; The inward curling portion is curled inward to connect the outer container and the inner container, and the inward curling portion is curled inward in the process of curling the inward curling portion inward; The part and the support part may be configured to be curled while supporting the inward curling part in the area where the curling starts at the inside.

According to the present invention, the rectangular cutting part is applied to the common area of the adhesion part and the curling part of the outer container, and the end part of the adhesion part and the end of the curling part are shielded within the common area. The provision of the part shows the effect that the inward curling of the outer container can be performed efficiently and easily.

FIG. 1 is a view showing the general structure of a double container according to the prior art. FIG. 2 is a view showing a double container outer container according to the prior art. FIG. 3 is a view showing another example of the outer container of the double container according to the prior art. FIG. 4 is a view showing an outer container of a double container according to an embodiment of the present invention. FIG. 5 is a view showing the bonding and curling structure of the outer container shown in FIG. FIG. 6 is a view showing another example of the outer container shown in FIG.

  The technical problems to be achieved by the present invention and the practice of the present invention will be clarified by the preferred embodiments described below. The preferred embodiments of the present invention will now be discussed in detail with reference to the accompanying drawings. In the description of the present invention, expressions such as upper, lower, left, right, one side, and the other indicate relative positions, and the configuration of the invention is not limited to the expressions.

  FIG. 4 is a view illustrating an outer container of a double container according to an embodiment of the present invention, and FIG. 5 is a view illustrating a bonding and curling structure of the outer container illustrated in FIG.

  The double container according to the embodiment of the present invention is a container for containing hot drinks, and has a double structure of an inner container and an outer container using a material harmless to human body such as paper, plastic and the like. Here, as shown in FIG. 1, the inner container (20) has a cylindrical shape having an outwardly directed curling portion (21) formed at the upper end, and the upper portion is open while the lower portion is the lower cover (30). Combined and sealed. In the double container of the present invention, the above-described general known configuration can be applied to the inner container and the lower cover, and the outer container will be specifically examined below.

  Referring to FIG. 4, the outer container 100 according to an embodiment of the present invention has a fan-like shape having a predetermined curvature and a predetermined width and length. Such a fan-like shape is a configuration for being applied to a cylindrical inner container in which the width of the lower part becomes relatively narrow, and when applied to a cylindrical inner container having the same width in the upper and lower parts, It has a rectangular shape.

  The outer container 100 is rolled round in the longitudinal direction to surround the inner container 20, and both ends are overlapped and joined to form a cylindrical shape having a smaller diameter in the lower part. At this time, the outer surface of one side end constitutes an adhesive portion (110) for adhering while overlapping the inner surface of the other side end with a predetermined width. The bonding portion (110) can be formed to have a width (A) of about 7 mm in the lateral direction, and the width of such bonding portion (110) can be appropriately adjusted depending on the size of the container.

  In addition, the outer container (100) has a cylindrical shape surrounding the inner container (20), and the lower end is curled inward, and the lower end is curled inward so that the curling portion has a predetermined width. Configure (120). The curling part (120) can be formed to have a width (B) of about 7 mm in the longitudinal direction, and the width of such a curling part (120) can be appropriately adjusted depending on the size of the container.

  The bonding portion (110) and the curling portion (120) form their common area (AB) in the lower right edge area, and the common area has a substantially square shape.

  Then, the outer container 100 is formed with a cutting part C where a part of the common area AB is cut off. The cutting portion (C) is formed in the common area (AB), and specifically, as shown in the enlarged view of FIG. 4, the longitudinal width of the curling portion (120) at the lower end of the bonding portion (110) B) It is cut into a substantially square shape having a width smaller than B) and a width smaller than the lateral width (A) of the bonding portion (110) at the right end of the curling portion (120). Therefore, the end of the bonding portion (110) forms a support portion (111) which is a region common to the curling portion (120), and the end of the curling portion (120) is a region which is common to the bonding portion (110) Form part (121).

  In addition, the supporting part 111 is cut at a terminal end of the shielding part 121 to a maximum width B of the curling part 120, and a cutting line 130 is formed to be free at the terminal of the bonding part 110. The shielding part 121 is connected to the end of the bonding part 110 at its inner side to constitute a fixed end. By means of the cutting line (130), when the curling part (120) is curled inward, the support part (111) becomes curled together to support the other end (100 ''). Cutting for that purpose If the line (130) is formed to at least a region including the curling portion (120) and is formed to a region not reaching the curling portion (120), a drawback occurs that the support portion (111) is not easily curled. In the case where the adhesive portion (110) region is formed beyond 120) excessively, there arises a drawback that the supporting force to the other end (100 '') of the support portion (111) is weakened. Therefore, it is preferable that the cutting line (130) includes at least the area of the curling section (120) and is formed to the area which exceeds the curling section (120) as much as possible.

  Also, a bonding surface (BD) is formed on the outer surface of the bonding portion (110), and the bonding surface (BD) is formed only to a region which does not reach the curling portion (120). Specifically, the bonding surface (BD) is formed on the surface of the bonding portion (110) from a position spaced approximately 5 mm away from the curling portion (120). Therefore, a partial area of the bonding portion 110 separated by approximately 5 mm from the curling portion 120 forms a non-bonding surface BD '. The width of the non-adhesive surface (BD ') can be adjusted by the size of the outer container (100). The non-adhesive surface (BD ') provides a width that allows the shield (121) and the other end (100' ') of the curling section to be able to slip laterally when the curling section (120) is curled. And make curling easier.

  Considering the structure in which the outer container (100) configured as described above is joined and curled with reference to FIG. 5, while the outer container (100) is longitudinally rolled round as shown in FIG. Bonding is performed while the ends (100 ', 100 ") are overlapped by a predetermined width. That is, one side end (100') is positioned inside and the other side (100") is positioned outside. The outer surface of one side end (100 ′) and the inner surface of the other side end (100 ′ ′) are bonded in a bonding surface (BD) region at this time. In the part, a non-adhesive surface (BD ') to which one side end (100') and the other side end (100 ") are not adhered is secured.

  Then, inward curling is performed in the lower curling portion (120) of the outer container (100), and the other side end (100) is formed in a region where one side end (100 ') and the other side end (100 ") overlap. The curling portion (120) is curled inward while pushing the shield portion (121) and the support portion (111) of the one side end (100 '). At this time, the curling is performed with the curling portion (120) at the other end and the shielding portion (121) at one end overlapped at the beginning of the curling, but at the second half of the curling, the one end is curled These overlapping areas gradually decrease while the shield part (121) of the other side is slipped from the curling part (120) of the other end, and after the curling is finally completed, as shown in (b) There is no overlapping region between the curling parts (120) of the other side end, and the shielding parts (121) of one side end are aligned with each other.

  Accordingly, the entire region of the curling portion 120 where the curling is completed forms a single structure in which the overlapping region is eliminated, and the shielding portion 121 causes one side end 100 'and the other side end 100 The intervals that can occur between ") are blocked.

  In addition, the support part (111) is curled together with the curling part (120) to support the curling part (120) in the area where the curling starts, so that the curling part (120) can be stably curled.

  FIG. 6 is a view showing another example of the outer container shown in FIG.

  In the outer container according to another embodiment of the present invention, the end of the shielding part 121 is formed in an oblique direction. That is, the shielding part 121 is formed in the direction in which the width W2 of the lower part gradually increases (W2> W1) while the end is inclined outward.

  When the shielding part (121) and the other side end (100 ") are curled inward, the shielding part (121) and the curling part (120) at the other side are slipped while being overlapped. At this time, the width of reduction decreases toward the lower end, so that the end of the shielding portion 121 is finally curled by forming the lower width in an increasing direction in consideration of this. After completion of the process, the end of the shielding part 121 and the curling part 120 at the other end come into straight line, and the space between them can be completely shielded.

  On the other hand, in the manufacture of a double container using the outer container having the above configuration, first, the curling portion (21) is formed at the upper end portion, and the inner container (20) to which the lower cover (30) is coupled is prepared. Do.

  Then, as described above, in the fan-shaped outer container (100), the common part is formed so that the support part (111) and the shield part (121) are formed in the common area of the bonding part (110) and the curling part (120). A part of the area (AB) is cut and removed, and the support (111) is cut along the end of the shield (121) to the cutting area so that the support (111) becomes a free end. In addition, the outer container (100) is wound in the longitudinal direction, and the bonding portion (110) is adhered to the other side end along the bonding surface (BD) with the bonding portion (110) inside to form a cylindrical shape. At this time, the shielding part 121 of one end 100 'and the curling part 120 of the other end 100' overlap each other.

  Thus, the inner container (20) and the outer container (100) are prepared, and the outer container (100) is joined along the surface of the inner container (20). Then, the curling portion 120 at the lower end of the outer container is curled inward, and the inner container 20 and the outer container 100 are combined to manufacture a double-structured container. At this time, the support portion 111 supports the curling portion 120 while being curled together with the curling portion 120 at the curling start point, and the shielding portion 121 is aligned with the curling portion 120 at the other end. To position.

  Although the embodiments of the present invention have been described with reference to the above, it will be understood by those skilled in the art that various modifications and other equivalent embodiments are possible. .

100: Outer container 110: Adhesive part 111: Support part 120: Curling part 121: Shield part 130: Cutting line AB: Common area C: Cutting part BD: Adhesive surface BD ': Non adhesive surface 20: Internal container 30: Lower cover

Claims (4)

In a dual-structure container in which the outer container surrounds the surface of a cup-shaped inner container with a cover coupled to the lower part,
The outer container being expanded to have a predetermined width and length,
One side end constitutes a bonding portion of a predetermined width, and the lower end portion constitutes a curling portion of a predetermined width,
In the common region of the bonding portion and the curling portion, a cutting portion partially cut in a rectangular shape at the lower right portion of the common region , and a width shorter than the longitudinal width of the curling portion at the lower end of the bonding portion And a rectangular shielding portion having a width shorter than the lateral width of the bonding portion at the bonding portion side end of the curling portion, and the supporting portion is free at the end of the bonding portion. Cutting between the support portion and the shielding portion to a maximum width of the curling portion so as to constitute an end;
The curled portion is curled inward after the shielding portion at one side end is overlapped with the curling portion at the other side end in a state of being longitudinally wound along the surface of the inner container. The container having a double structure, which is configured to be slipped against each other in the process and to support the curling portion in the area where the curling starts at the inside. The adhesive portion is adhered surface formed on the outer surface, the container having a double structure according to claim 1, wherein the adhesive surface characterized in that it is formed above the position spaced apart from the common area. The container according to claim 1 or 2, wherein a width of the shielding part is separated from an end of the curling part toward the lower end of the curling part . (A) forming an outward curling portion on the upper portion of the cup-shaped inner container to prepare;
(B) coupling and sealing a cover to the lower opening of the inner container;
(C) preparing an outer container in a state of being spread so as to have a predetermined width and length, wherein the outer container constitutes a bonded portion having a predetermined width at one side end and a predetermined width at the lower end A cutting portion which is partially cut out in a rectangular shape at the lower right side of the common area in the common area of the bonding area and the inward curling area, and the lower end of the bonding area. A rectangular supporting portion having a width shorter than the longitudinal width of the inward curling portion, and a rectangular shielding portion having a width shorter than the lateral width of the adhering portion at the bonding portion side end of the inward curling portion Cutting between the support portion and the shield portion to the maximum width of the inward curling portion such that the support portion constitutes a free end at the end of the adhesive portion;
(D) winding the outer container longitudinally in the longitudinal direction so that the shielding portion and the inward curling portion at the other end overlap, and bonding the outer surface of the bonding portion to the inner surface of the other end;
(E) Curing the inward curling portion inward, and coupling the outer container and the inner container,
While the inward curling portion is curled inward, the shield portion is slipped with the inward curling portion at the other end, and the support portion curls while supporting the inward curling portion in the area where the curling starts at the inside. A method of making a dual-structure container, characterized in that it is configured to

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