KR100792097B1 - Heat insulated cup - Google Patents

Abstract

A protrusion is formed in which the lower portion of the main body cup consisting of a body portion and a bottom plate protrudes over all the circumferences, and a flat outer sleeve is bonded to the outer circumferential surface of the protrusion portion to form an insulation space. In addition, between the top curl 3 of the body wall 2 of the insulating cup and the engaging portion of the body wall 2 and the bottom plate 5, a shaft body 8 having a reduced radius is formed over the entire circumference of the body, and the shaft body An outer sleeve covering all the circumferences of the trunk wall of the thermal insulation cup is attached to the upper and lower trunk walls 2 of part 8 to form a thermal insulation space in the space between the shaft diameter body and the exterior sleeve.

Cup, sleeve, heat insulation, top curl, shaft bore

Description

Insulation Cup {HEAT INSULATED CUP}

TECHNICAL FIELD This invention relates to the improvement of the heat insulation cup of the sheet material represented by the thick paper which can be used for drinking cups, such as hot coffee, black tea, green tea, and instant cup noodles container.

In the above-described type of insulating cups, the design of Japanese Unexamined Patent Application Publication No. 4-45212 (designation name: heat insulation paper cup) (hereinafter referred to as Design A) and the design of Japanese Unexamined Patent Application Publication No. 6-39717 (designation name) : Heat insulating paper cup) (hereinafter referred to as design B) is known,

Inventive A is to curl the bottom c of the outer layer paper (b) inward, as shown in Figure 7, to form the heat insulating layer d by pasting the curl (j) to the body paper a There is a problem that the labor of the processing process of the inner curl of the bottom of the tubular exterior paper b is required.

In addition, it is remarkably difficult to form a cylindrical shape by arranging the lower end of the outer layer paper b in which the curl j facing inwardly exists, and irregularities due to wrinkles are generated on the outer surface of the curl j facing inward. there is a problem.

Design B has a problem of requiring a step of joining the insulating material embossing paper g between the trunk paper e and the outer layer paper f, as shown in FIG.

In addition, none of the above-mentioned conventional designs A and B, it is necessary to add a special processing step in the manufacturing process of the heat insulating cup, there is a problem that the cost increase is not avoided.

Particularly, in the invention A shown in Fig. 7, when setting the top curl (j) toward the inside of the bottom c of the outer layer paper b, when the assembly, the lower end of the body cup made of the body a, the outer layer paper b There is a problem that a defect is likely to occur in the joining process between the curl portion j of the cross section.

In addition, as shown in FIG. 13, the upper and lower two-level horizontal ribs H and I protrude from the cup body portion G, and the lower portion of the top curl J of the cup body portion G and the lower portion of the body portion G are shown. To the outer circumferential surface, the tubular body L having an inwardly curled curl K formed at the lower end is bonded to the outer peripheral surface, and contacted with the outer surface of the horizontal ribs H and I, or replaced at a slight interval, and the cup body G is placed by hand. Either the cylindrical body L at the time of holding is prevented from being deformed to the cup body part G side, or as shown in FIG. 14, the shaft diameter end part N is formed in the upper part of the cup body part M, The cup trunk portion M close to the staff barrel is formed between the shaft end portion N and the bottom side wall O, and the outer sleeve Q is bonded between the upper homology portion P above the shaft diameter body portion N and the bottom side wall O. It is known to form an insulating space R between the cup body portion M and the outer sleeve Q.

In the heat insulation cup shown in FIG. 13, deformation of the cylindrical shape L at the time of holding is prevented, but it has the same problem as that shown in FIG. 7 with respect to the curl K facing inward, and also in the heat insulation cup shown in FIG. As shown in FIG. 7, there is a problem that the outer sleeve Q is deformed and the heat insulation effect of the outer sleeve Q adjacent to the bottom side wall O is lost.

In order to solve the problem of the insulating cup shown in Figs. 7 and 14, there is also proposed a structure described in Japanese Patent Laid-Open No. 2567942 shown in Fig. 15, a corrugated (T) as the outer sleeve S The cardboard piece V facing the cup body portion U side is used, and the upper and lower portions of the cardboard piece V are bonded to the upper and bottom side walls W of the cup body portion U. Is present in the plane of a single, inverted truncated cone, it is technically remarkably difficult to recommend a piece of cardboard V because of the presence of cardboard T in terms of homogeneous mass production, In addition, the use of the cardboard piece V has a problem that does not avoid the cost increase.

In view of all the problems of the above-described conventional heat insulating cups, the present invention is made of a sheet material represented by a thick paper, but the heat insulation of the trunk portion is substantially equal, and deformation is not possible in a normal gripping state. It has a difficult strength, and the strength of the bonding portion between the body of the cup and the outer sleeve is large, while the upper body (hereinafter, referred to as the `` upper part '') has a strength with the outer sleeve. The inner portion of the cup of the adhesive portion can also function as a portion for placing the saucer, such as additives and a small spoon, and also provides an insulating cup that is relatively simple in structure, relatively inexpensive and can be manufactured with high production efficiency. It is a task to do.                 

In addition, according to the present invention, a flat outer sleeve can be used to form a heat insulation layer only by projecting the joint portion during the forming process of the trunk portion, and bottom curl processing and bonding of the heat insulator are performed. It does not require a process and the like, and the structure is relatively simple, relatively inexpensive, and can be manufactured with high production efficiency, as well as compared to a conventional heat insulating cup having the same shape and capacity. Since the stationary edge can be made wider by the thickness of the protrusion formed on the portion (hereinafter referred to as 'hadong'), it provides an insulating cup with high stationary stability when stationary on a flat surface. We are doing that.

 In order to solve the above-mentioned problem, in the invention of claim 1, the body part is made of a sheet of paper represented by arbitrary thick paper, a lower plate (hereinafter referred to as a 'base plate'), and an outer sleeve. The lower part of the trunk portion is a projection projecting outward over all the circumferences, and a bottom plate is bonded to the projection portion, and the flat outer sleeve is bonded to the upper portion of the trunk portion and the outer circumferential surface of the projection portion described above. It was set as the structure which the heat insulation space is formed between the outer side of the trunk | drum and the inner side of the outer sleeve between a homologous part and the outer peripheral surface of the said protrusion part.

In the invention of claim 2, the outer edge portion of the bottom plate is adhered to the inner surface side of the protruding portion, and a configuration in which a cylindrical outer sleeve lower end portion is bonded to the outer surface side of the protruding portion is added to the invention of claim 1.

In the invention of claim 3, a configuration in which the bonding portion of the homologous portion, the lower portion, and the outer sleeve is a pressure-adhesive portion is added to the invention of claims 1 and 2.

In the invention of claim 4, there is provided a configuration in which at least one convex portion of a ruled line contacting the inner surface of the outer sleeve is protruded between an upper portion of the trunk portion and a protrusion. It is added to the invention of Claim 2 or 3.

In the invention of claim 5, the lower homology portion of the top curl of the top wall of the torso wall of the heat insulating cup made of a sheet material represented by a thick paper, and the lower portion of the lower portion below the coupling portion of the torso wall and the bottom plate. Throughout all the circumferences of the trunk wall between them, a trunk (hereinafter referred to as a shaft diameter) with a reduced radius of depression in the container is formed, and on the outer surface of the homology part and the lower part of the trunk wall, A construction for adhering an outer sleeve covering all outer surfaces of the body wall and forming an insulating space between the outer diameter sleeve and the shaft portion between the upper and lower portions is added to the invention of claims 1, 2 or 3. It was.

In the invention of claim 6, a configuration is provided in the invention of claim 5 in which a step portion close to an upward horizontal plane is formed in the shaft diameter portion of the body wall in the homologous portion.

In the invention according to claim 7, the constitution of forming an adhesive convex portion adhering to the inner surface of the outer sleeve over the entire circumference is provided in the center portion of the shaft diameter portion to the invention according to claims 5 and 6. It was.

1 is a side view showing, in cross section, a half of one embodiment to which both of the inventions of claims 1 and 2 apply.

Fig. 2 is a side view showing in half a section of one embodiment to which all of the inventions of claims 1, 2 and 4 are applied.

3 is an enlarged partial longitudinal sectional view of an example of a bottom of a conventional body cup.

Figure 4 is an enlarged partial longitudinal cross-sectional view of one embodiment showing the shape of the protrusion of the bottom of the body cup.

5 is an enlarged partial longitudinal cross-sectional view of the same shape as FIG. 4 of another embodiment.

FIG. 6 is an enlarged partial longitudinal sectional view of the same shape as FIG. 4 of another embodiment; FIG.

7 is a longitudinal sectional view of a conventional example.

8 is a cross-sectional view cut in the direction perpendicular to the axis of another conventional example.

Fig. 9 is a side view showing in half a section of one embodiment to which all of the inventions of claims 3, 5 and 6 are applied.

FIG. 10 is an enlarged cross-sectional view showing a main part of what is shown in FIG.                 

11 is a side view showing, in cross section, a half of one embodiment of applying the invention of claim 7 to the embodiment shown in FIG. 9;

12 is a side view showing, in cross section, a half of another embodiment in which the invention of claim 7 is applied to the embodiment shown in FIG. 9;

Figure 13 is a half-section cross-sectional view of an example of another conventional insulating cup.

14 is a semi-sectional view of an example of another conventional insulating cup.

15 is a half-sectional cross-sectional view of an example of a conventional improved adiabatic cup.

Fig. 1 shows one embodiment in which both of the inventions of claims 1 and 2 are applied, and in the trunk portion 20 made of thick paper, the section of the height h of the lower portion 7 It protrudes by the radius r over the protrusion 22.

As shown in Figs. 4 and 5, the protrusion 22 of the illustrated embodiment has a lower edge portion (hereinafter referred to as a lower edge portion) 27 of the lower portion 7 of the trunk portion 20 and the lower edge of the protrusion 22. Iii) the outer edge 24 folded back to the inner side and bent downward from the periphery of the bottom plate 5 is narrowed between the protrusion 22 and the lower edge 27, and the outer edge 24 Adhesion is fixed on both sides of.

The main body cup 19 formed by the body 20 and the bottom plate 5 of the embodiment shown in FIG. 1 has a top curl 3 formed outwardly at the opening edge, and the upper homology portion 4 and the protrusion 22 of the lower rectus. On the outer circumferential surface of the flat outer sleeve 9, a flat outer sleeve 9 is bonded to the inner surface of the upper edge portion and the inner surface of the lower end portion 25, so that the outer surface 21 and the outer sleeve portion of the body portion between the upper portion 4 and the outer periphery 22 are formed. An adiabatic space 10 is formed between the inner surfaces 16, and the top curl is not necessarily required, and may be replaced by a flange facing outward.

In addition, in the embodiment shown in Figs. 1 to 6, the lower edge portion 23 of the projection portion 22 has a double structure in which the lower edge portion 27 of the body portion is bent inward, and the outer edge portion 24 bent downward from the peripheral edge of the bottom plate 5 is It is extended between the protrusion part 22 and the lower side part 27, and is bonded and fixed. In the invention of claim 1, the adhesion and fixing structure of the protrusion part 22 and the bottom plate 5 are not particularly limited and may be any type.

In the invention of claim 3, the bonding portion between the homology portion 4, the lower portion 7 and the outer sleeve 9 is a pressure bonding portion.

Fig. 2 shows one embodiment to which all of the inventions of claims 1, 2 and 4 are applied, and means for adhering and fixing the body portion 20 and the bottom plate 5 is shown in Fig. 11. The same structure as that of 19 is formed on the outer circumferential surface 33 of the body portion 20, and the ruled portions 26 and 26A of the ruled line which contact the inner surface 16 of the outer sleeve 9 are formed. It is characterized in that the inner surface 16 of the outer sleeve 9 can be bonded.

In this embodiment, the projection height of the ruled line 26A is projected from the ruled line 26A so that the heat insulation space 10A is formed to have a substantially uniform thickness from the top to the bottom of the main body cup 19. Set it just slightly lower than the height. In addition, the number of the convex parts to be formed is not limited to two as shown, and either one or three of the convex part 26 or the convex part 26A is shown. Or more than that may be sufficient.

The present invention, as shown in Fig. 1, 3 or 6, in the current forming line of the main body cup 19 consisting of the body portion 20 and the bottom plate 5, the projection 22 of the lower portion 7 of the main body cup 19 It may be formed.

As shown in FIG. 3, in the bottom forming process of the main body cup 19 which consists of the trunk | drum 20 and the bottom plate 5, the protrusion part 22 can also be formed by applying the protrusion force k to the outer side.

The shaping | molding method of this invention can be achieved by adding any of the following means to the formation line of the current main body cup 19. As that means,

(1) A method of adhering the body portion and the bottom plate to each other and protruding the bonding portion to the outside.

(2) After the body portion and the bottom plate are adhered and bonded to the current main body cup forming line, the joining portion is projected outward in a subsequent step.

③ The lower part is protruded to the outside in advance, and the bottom plate is attached to the protruding part so as to bond and bond with the body part.

There is this.

After the above-described protrusions are formed, the outer sleeve is bonded to the main body cup, and as the joining means, the main body cup may be inserted into the flat cylindrical outer sleeve that is previously sealed by a side seal. Alternatively, a flat outer sleeve may be wound on the main body cup to be adhesively bonded.

As the formation form of the protrusion part 22 which consists of the trunk | drum 20 and the bottom plate 5, the deformation | transformation form can be considered as shown in FIG. 4, FIG. 5, and FIG. 6, The coupling form of the exterior sleeve 9 to the protrusion part 22 also differs somewhat.

In any form of protrusion, a large thermal insulation space 10 is formed between the trunk portion 20 and the outer sleeve 9.

In the case of the present invention, the shape of Figure 3, as shown in Figure 4, according to the application of the projection force k, to form a projection 22, the body portion 20 and its lower side portion 27 and the bottom plate 5 and the outer edge portion 24 of the deflection Voids are formed in portions 28, 29, and 30, and liquid leakage, infiltration, and the like do not occur due to the presence of the adhesive layer 31.

As shown in FIG. 5, when the space between the tip 32 of the lower side 27 of the trunk portion 20 and the inner surfaces of the bottom plate 5 is not provided, the refracted portion 28 and the refracted portion 30 of the tip 32 and the bottom plate 5 do not overlap. The voids do not form between the refractive portions 30, and the adhesion is further improved.

As shown in FIG. 6, when the protrusion 22A is widened at the bottom side and the outer sleeve 9 is bonded to the outer circumferential surface from the bottom thereof, the bottom portion of the container has a radius larger than that shown in FIG. 4 or 5. This results in improved political stability of the container.

9 and 10 show one embodiment to which all of the inventions of Claims 3, 5 and 6 are applied, in which a synthetic resin film for imparting water resistance to a thick paper is laminated. In the trunk portion 2 of the heat-insulating cup 1 formed of water-resistant Fuji, all the circumferences are provided between the upper homology portion 4 below the top curl 3 and the lower movement portion 7 lower than the engaging portion 6 of the body wall 2 and the bottom plate. The shaft diameter trunk 8 recessed in the container inside is formed.

An outer sleeve 9 which covers all outer surfaces of the trunk wall 2 is bonded to the outer surfaces of the upper and lower portions 4 and 7 of the trunk wall 2.

By the above-described configuration, an insulating space 10 is formed between the shaft diameter body portion 8 and the outer sleeve 9 between the upper and lower portions 4 and 7 and the upper and lower portions of the insulating space are formed by the upper portion 4 and the outer sleeve 9. It consists of an adhesion part 11, the adhesion part 12 of the said lowering part 7, and the outer sleeve 9. As shown in FIG.

The bonding portion 11 of the homologous portion 4 and the outer sleeve 9 and the bonding portion 12 of the lower portion 7 and the outer sleeve 9 are pressure-adhesive portions which are subjected to the forming action and the bonding action by pressurization by the forming die from both inside and outside sides thereof. In the upper end of the shaft body portion 8, a stepped portion 13 is formed to be obliquely closer to the horizontal plane upward, and a multi-layer structure in which both bonding portions 11 and 12 are in close contact with each other has improved its rigidity.

 The stepped portion 13 is obliquely upward to a horizontal plane upward. As the support plate is hung around the stepped portion 13, the base plate for placing an additive or a spoon or the like on the contents of the insulation cup 1 is stabilized. I can receive it easily.

11 and 12 show two embodiments to which all of the inventions of claims 3, 5, 6, and 7 are applied, and the configuration of each part other than the shaft bodies 14 and 15 9 and 10, the description thereof is omitted, and a description will be given below of the part to which the invention according to claim 7 is applied.

In the embodiment shown in Fig. 11, an adhesive convex portion 17 bonded to the inner surface 16 of the outer sleeve 9 is molded by die pressing against the shaft diameter body portion 14 over the entire circumference of the shaft diameter body portion 14. In the case of holding the insulating cup 1, which is adhered to the inner surface 16 of the outer sleeve 9 by appropriate means and improves the shape retaining performance in the center portion of the insulating space 10, the deformation of the container body is reduced.

Fig. 12 shows the outer surface of the shaft bore 15 and the outer sleeve 9 by forming an adhesive convex 18 formed over all the circumferences in a central portion of the shaft bore 15 with a foamed styrol or corrugated cardboard. Since it is set as the structure adhere | attached on the inner surface 16, it functions as the adhesive convex part 17 shown in FIG.

In the invention according to claim 1, since the lowering portion of the trunk portion projects outward over all the circumferences, the heat insulation space is easily and surely formed.

Moreover, processing of the outer sleeve, such as a bottom curl process and the bonding process of a heat insulating material, is unnecessary.

Since the outer sleeve is flat, in the invention of claim 2, bonding of the outer sleeve and the main body cup is easy.

In the current forming line of the main body cup, the protrusion of the lower part of the main body cup can be formed. In other words, the protrusion can also be molded in the bottom forming step. Therefore, the molding cost is low.

Moreover, since the stationary edge can be made wider by the thickness of the protrusion formed in the lower movable portion, the stationary stability becomes high when standing on the plane.

Since the protrusion is protruded over all the perimeters in the lowered portion, the strength in the radial direction of the lower portion of the container is improved.

According to the invention of claim 2, in addition to the invention of claim 1, the strength of the container low smoke is further improved by bonding the outer sleeve.

In the invention according to claim 3, since the bonding portion between the upper portion, the lower portion and the outer sleeve is a pressing portion, and its rigidity is improved, the grip portion is less deformed even when the finger is held directly under the top curl. Even if the heat-insulating cup in the state containing contents is violently exerted, it is possible to satisfactorily prevent the fall of the heat-insulating cup due to deformation of the lower portion.

According to the invention of claim 4, since the ruled line protrudes from the trunk portion of the invention of claim 1 or 2, the pressure strength to the container trunk portion is further improved. In addition, the deformation of the outer sleeve can be prevented, and the heat insulating space can be maintained, so that the heat insulating effect is further improved.

In the invention according to claim 5, between the homologous portion below the top curl of the trunk wall and the lowering portion at the engaging portion of the trunk wall and the bottom plate, the shaft diameter trunk is recessed over all the circumferences. Since a heat insulation space is formed between the outer sleeve and the outer sleeve of the body wall covering the outer surface of the body wall and bonded to each other, it is generally uniform on the body wall other than the homologous portion of the top wall of the body wall of the heat insulation cup. There is an effect that can have a thermal insulation effect.

In the invention according to claim 6, since the shaft diameter portion of the trunk wall is slightly obliquely upward with respect to the plane in the homologous portion, this terminal portion functions as a reinforcement of the trunk portion when the upper portion of the trunk portion is gripped. In addition to preventing the deformation of the cup, it may also be a resin part of the saucers that are inserted into the insulating cup, and may be useful when the additives to the contents of the cup and a small spoon are separated from the contents and stored. Has the effect of.

In the invention according to claim 7, the center portion of the shaft diameter portion is bonded to the inner surface of the outer sleeve by an adhesive convex portion, and the adhesive convex portion is a reinforcing portion covering all the circumferences of the center portion. This prevents deformation of the outer sleeve when gripping the body wall, and in addition, does not damage the heat insulation of the container body wall.

Moreover, neither of the inventions of Claims 5 or 7 has an effect of maintaining high production efficiency because there is no structural part involving difficulty in molding technology in terms of production process.

Claims (7)

A body of sheet paper, represented by a sheet of thick paper, a bottom plate and an outer sleeve, wherein the lower portion of the body is a protrusion projecting outward over all the circumferences; A bottom plate is adhered to the protruding portion, a flat outer sleeve is bonded to the upper portion of the body portion and the outer circumferential surface of the protruding portion, and a body outer surface and the outer sleeve between the upper portion and the outer surface of the protruding portion. An insulation cup with an insulation space formed between the inner surfaces. The heat insulating cup according to claim 1, wherein an outer edge of the bottom plate is bonded to an inner surface side of the protrusion, and a lower end of a cylindrical outer sleeve is bonded to an outer surface of the protrusion. The insulating cup according to claim 1, wherein the bonding portion of the upper portion, the lower portion and the outer sleeve is a pressure-adhesive portion. The heat insulating cup according to any one of claims 1 to 3, wherein at least one ruled line convex portion in contact with the inner surface of the outer sleeve is protruded between the homologous portion of the body portion and the protrusion portion. . The body part according to any one of claims 1 to 3, wherein the body part is located between a lower homology part of the top curl of the body wall and a lower body part lower than the joint part of the body wall and the bottom plate. All over the circumference of the wall, forming a torso with reduced radius recessed into the container, To the outer surface of the upper and lower portions of the trunk wall, an outer sleeve covering all outer surfaces of the trunk wall is glued, Insulating cup, characterized in that the insulating space is formed between the shaft portion between the upper and lower portions and the outer sleeve. 6. The insulating cup according to claim 5, wherein the shaft diameter portion of the body wall in the homologous portion forms a step portion close to the upward horizontal plane. The heat insulating cup according to claim 5, wherein an adhesive convex portion adhering to the inner surface of the outer sleeve is formed over all the circumferences in the center portion of the shaft diameter portion.

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