CN1242901C - Insulated Cup - Google Patents

Abstract

A heat insulating cup body comprising a case and a bottom plate, wherein a bottom end portion of the case is entirely projected to form a projected portion, an outer peripheral surface of an upper case portion and the projected portion is bonded to a flat plate-shaped outer cylindrical body to form a heat insulating space, a top curl 3 of a wall 2 of the heat insulating cup and a wall between a joint portion of the wall 2 and the bottom plate 5 are reduced in diameter over the entire circumference to form a reduced diameter case 8, upper and lower walls 2 of the reduced diameter case 8 are bonded to an outer cylindrical body covering the entire wall of the heat insulating cup, and the heat insulating space is formed between the reduced diameter case and the outer cylindrical body.

Description

Insulated Cup

technical field

The present invention relates to an improvement of an insulated cup made of sheet-type material, represented by thick paper used in drinking cups for hot coffee, black tea, green tea, etc., and as instant noodle containers.

Background technique

Although the design scheme (design name is: heat-insulating paper cup) (hereinafter referred to as design scheme A) published on the No. flat 4-45212 communique as this heat-insulating cup, and the design scheme published on the flat No. 6-39717 communique ( The name of the design is: heat-insulating paper cup) (hereinafter referred to as design plan B) and it is known. However, design plan A, as shown in FIG. Part j abuts against shell paper a to form heat insulating layer d. This has the problem of requiring a step of curling the tubular outer wrapping paper b toward the inner side of the bottom.

And it is very difficult to arrange the lower end of the outer layer paper b with the above-mentioned inward curl j into a cylindrical shape. The inward curl j also has the problem of unevenness due to wrinkles on the outside.

As shown in Fig. 8, the design scheme B is to put heat-insulating material-water pattern paper between the tube wallpaper e and the outer paper f to form the heat-insulation layer h. The processing process between the tube wallpaper e and the outer paper e.

Furthermore, in both 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 paper cup, and there is a problem of inevitably increasing the manufacturing cost.

Especially in the design scheme A shown in Figure 7, the bottom of the outer layer of paper b is provided with an inwardly curled bottom j. When the curling part j goes up, the problem of poor bonding between the two is likely to occur.

The following heat-insulating cups are known: as shown in Figure 13, there are two protruding horizontal ribs H and I on the paper cup shell G. The lower part of the top bead j of the shell G and the outer peripheral surface of the lower part of the shell G are in contact with the outer surfaces of the above-mentioned horizontal ribs H and I, so that there is only a small gap between the cylinder L and the paper cup shell G. , which can prevent the cylinder L from deforming toward the side of the paper cup shell G when the paper cup shell G is held by hand; and as shown in Figure 14, the upper part of the paper cup shell M is shrunk to form a reduced diameter part N From the reduced diameter part N to the almost straight cylindrical paper cup shell M between the bottom side wall O, the outer (sleeve) cylinder body Q is bonded to the upper shell part P above the above-mentioned reduced diameter part N and Between the above-mentioned bottom side walls 0, a heat insulating space R is formed between the paper cup shell M and the outer casing Q.

In the heat insulating cup shown in FIG. 13, although the deformation of the cylinder L when being held can be prevented, the same problem as that of the paper cup shown in FIG. 7 exists due to the inward bead K. Even in the heat-insulating cup shown in FIG. 14, there are problems such as deformation of the outer casing Q similar to that of the paper cup shown in FIG.

In order to solve the problems of the heat-insulating cup shown in Fig. 7 and Fig. 14, someone proposed a structure as shown in Fig. 15 as shown in the registered utility model No. 2567942. That is, the structure uses a single-sided corrugated paper V as the outer casing S, so that the T direction of the corrugated paper faces the side of the paper cup shell U, and the upper and lower parts of the single-sided corrugated paper are in contact with the upper and lower parts of the paper cup shell U. The bottom sidewall W is bonded. Since the upper and bottom side walls W of the paper cup shell U are placed in a single inverted conical table, when the single-sided corrugated paper V is rolled to meet the requirements of mass production and uniform quality, the presence of corrugated paper T , so it is technically very difficult, and because of the use of corrugated cardboard V, the production cost will inevitably be high.

Specific Description of the Invention

In view of the many problems of the above-mentioned original heat-insulating cup, the present invention provides a heat-insulating cup. Although the heat-insulating cup is a kind of heat-insulating cup made of a thin sheet material represented by thick paper, the heat-insulating effect of the shell part is roughly equal. It will not be deformed in the usual holding state; the bonding part between the paper cup shell and the outer casing has high strength, and the inner part of the paper cup with the bonding part of the outer casing located on the upper casing part can be used as a place for some The functional part of containers such as additives and spoons; at the same time, its structure is simple, the price is low, and it can be produced efficiently.

In addition, the present invention uses a flat-plate outer casing, and in the molding process of the shell, the heat insulating layer can be formed in the process of processing the joint part to protrude outward, without the need for bottom curling and pasting of heat insulating materials. Not only is the structure simple, the price is low, and the production efficiency is high, but compared with the original heat-insulating cup with the same shape and capacity, only the thickness of the protrusion formed at the bottom part of the shell can be expanded into a static flange, so it can be placed The insulation cup has good stability when it is on a flat surface.

In order to solve the above problems, according to the invention of the first aspect of the present invention, the heat insulating cup is composed of a shell made of a flat material represented by thick paper, a bottom plate, and an outer casing, and the lower part of the shell is The bottom part of the casing is folded inward to form a two-layer structure, and the bottom part of the above-mentioned casing is made into a protruding part that protrudes outward in the entire circumferential direction, and a bottom plate is bonded to the protruding part. The body part (the upper part of the housing) and the outer peripheral surface of the above-mentioned protruding part are bonded with a flat-plate shell cylinder, and the outer surface of the housing between the upper housing part of the above-mentioned housing and the external peripheral surface of the above-mentioned protruding part and the outer cylinder An insulating space is formed between the surfaces.

According to the invention of the second aspect of the present invention, the outer edge portion of the base plate is bonded to the inner surface side of the protrusion, and the lower end portion of the cylindrical outer casing is joined to the outer surface side of the protrusion, and this structure serves as Additional features of the first aspect of the present invention.

According to the invention of the third aspect of the present invention, the upper part of the casing and the bottom end of the casing are bonded to the outer casing by pressure, and this structure is an additional feature of the first or second aspect of the present invention.

According to the invention of the fourth aspect of the present invention, between the upper part of the casing and the protruding part, at least one linear (corrugated) ridge that abuts against the inner surface of the outer casing is provided, and this structure serves as the present invention. Additional features of the 1st, 2nd or 3rd aspect of the invention.

According to the invention of the fifth aspect of the present invention, the heat-insulating cup made of flat thin material represented by thick paper, the upper shell part below the top curling of the shell wall, and the shell below the shell wall and bottom plate structure part The entire circumference of the shell wall between the bottom parts is recessed toward the inner side of the container to form a shell with a reduced diameter, and the outer surface of the upper part of the shell wall and the bottom part of the shell is socketed with the outer shell covering the entire shell outer surface Bonded together, a heat-insulating space is formed between the reduced-diameter casing between the upper part of the casing and the bottom end of the casing and the outer casing, and this structure is used as an additional feature of the first, second or third aspect of the present invention .

According to the invention of the sixth aspect of the present invention, an upward step close to the horizontal plane is formed on the reduced diameter part of the shell wall of the upper casing part, and this structure is used as an additional feature of the invention of the fifth aspect of the present invention.

According to the invention of the 7th aspect of the present invention, in the central portion of the reduced-diameter casing, a protrusion part bonded to the inner surface of the outer casing is formed on its entire circumference, and this structure is used as the fifth or the first aspect of the present invention. 6 additional features.

A brief description of the graphics

Fig. 1 is a side view showing a half section of an embodiment of the inventions applicable to both the first aspect of the present invention and the second aspect of the present invention.

Fig. 2 is an embodiment of the inventions applicable to the first aspect of the present invention, the second aspect of the present invention and the fourth aspect of the present invention at the same time, showing a side view in half section of the example.

Fig. 3 is an embodiment of the bottom of the conventional paper cup body, showing an enlarged longitudinal sectional view thereof.

Fig. 4 is an embodiment showing the form of the protrusion at the bottom of the paper cup body, and a longitudinal sectional view showing an enlarged part thereof.

Fig. 5 is an embodiment same as Fig. 4, showing a longitudinal sectional view of an enlarged part thereof.

Fig. 6 is another example of a different embodiment, which is the same as Fig. 4 and is a longitudinal section view of an enlarged part.

Fig. 7 is a longitudinal sectional view of a conventional paper cup.

Fig. 8 is an axial cross-sectional view of another conventional paper cup.

Fig. 9 is a half-section side view showing one embodiment of the inventions applicable to the third aspect of the present invention, the claim item 5 and the sixth aspect of the present invention at the same time.

Fig. 10 is an enlarged sectional view of the main part shown in Fig. 9, which is omitted in the figure.

Fig. 11 is a half-sectional side view showing the invention of the seventh aspect of the present invention applied to the embodiment shown in Fig. 9 .

Fig. 12 is a half-section side view of another example of the seventh aspect of the present invention applicable to the embodiment shown in Fig. 9 .

Fig. 13 is a half-section longitudinal sectional view of another conventional heat insulating cup.

Fig. 14 is a half-section longitudinal sectional view of another different conventional heat insulating cup.

Fig. 15 is a half longitudinal sectional view of an embodiment of an improved conventional heat insulating cup.

Embodiment of the invention

FIG. 1 shows an embodiment of each invention applicable to both the first aspect of the present invention and the second aspect of the present invention. The housing 20 made of thick paper protrudes only r outward in the radial direction on the entire circumference in the interval of the height h of the housing bottom portion 7 to form a protrusion 22 .

In the embodiment shown in Fig. 4 and Fig. 5, the protruding part 22 is processed in this way: the bottom part 7 of the housing 20, its lower edge part 27 is turned inward at the lower edge 23 of the protruding part 22 It is folded into a two-layer structure, and the outer edge portion 24 bent downward from the periphery of the bottom plate 5 is sandwiched between the above-mentioned protruding portion 22 and the lower edge portion 27, and is bonded to both sides of the outer edge 24.

The opening edge of the paper cup body 19 composed of the shell 20 and the bottom plate 5 of the embodiment shown in FIG. 1 is folded outward to form the top curl 3 . The cylindrical body 9 of flat plate type is bonded to the outer peripheral surface of the upper case portion 4 immediately below the bead and the above-mentioned protrusion 22 with the inner surface of its upper edge portion and the inner surface of the lower end portion 25, respectively. In this way, an insulating space is formed between the casing outer surface 21 and the inner surface of the outer casing 9 between the upper casing portion 4 and the outer peripheral surface of the protruding portion 22 . However, it goes without saying that the top bead 3 is not essential, and can also be replaced by an outward flange or the like.

In the embodiment shown in FIGS. 1-6 , the lower portion 27 of the casing 20 at the lower edge 23 of the protruding portion 22 is turned inward to form a two-layer structure, and the outer part bent downward from the periphery of the bottom plate 5 The rim 24 is clamped, glued, fixed between the protrusion 22 and the lower edge portion 27 . In the invention of the first aspect of the present invention, there is no particular limitation on the bonding and fixing structure of the protruding portion 22 and the bottom plate 5, and any bonding and fixing structure is possible.

In the invention of the third aspect of the present invention, the bonding between the above-mentioned upper casing part 4, the bottom end part 7 of the casing and the outer casing 9 is carried out by means of pressurization.

FIG. 2 shows one embodiment of each invention applicable to both the first aspect of the present invention, the second aspect and the fourth aspect of the present invention. The bonding and fixing of the housing 20 and the bottom plate 5 are the same as the structure of the paper cup body 19 shown in FIG. 1 . But it is characterized in that, on the outer peripheral surface 33 of the housing 20, linear convex lines 26, 26A abutting against the inner surface 16 of the outer casing 9 are formed, so that the distance between the convex lines 26, 26A and the inner surface 16 of the cylindrical body 9 Can be connected between.

In this embodiment, the heat insulating space 10 is formed from the upper part to the lower part of the paper cup body 19 with a substantially uniform thickness, and the protruding height of the linear protruding lines 26A is slightly lower than that of the linear protruding lines 26 . In addition, the number of ridges to be formed is not limited to 2 as shown in the figure, and the number of ridges 26 or 26A may be one, three or more.

The present invention is shown in Fig. 1, Fig. 3 to Fig. 6, also can form the protruding part 22 of the shell bottom part 7 of paper cup body 19 in the existing molding outline line that constitutes paper cup body 19 by shell 20 and bottom plate 5 .

As shown in FIG. 3 , during the forming process of forming the bottom of the paper cup body 19 by the shell 20 and the bottom plate 5 , the protruding portion 22 as shown in FIG. 4 can be formed by applying a protruding force K outward.

As the molding method of the present invention, it can be achieved by adding any of the following means to the molding outline of the existing paper cup body 19 . The specific method is:

(1) While bonding and bonding the casing and the bottom plate, the bonding portion is made to protrude outward.

(2) After the casing and the bottom plate are bonded and combined by the current body molding outline, the joint part is made to protrude outward in the next process.

(3) Protrude the bottom part of the shell outwards in advance, make the bottom plate adhere to the protruding part of the bottom end part of the shell, and then bond and combine with the shell.

After the above-mentioned protruding part is formed, the outer casing and the paper cup body can be bonded and combined. As its combination means, the paper body can be inserted into a pre-sealed flat-shaped cylindrical outer casing and then combined, or the flat-shaped outer casing can be wound onto the paper cup body and then bonded and combined.

As shown in Fig. 4, Fig. 5 and Fig. 6, the form of the protruding part 22 formed by the casing 20 and the bottom plate 5 needs to be considered, and the form of the combination of the outer casing 9 and the protruding part 22 is somewhat different. .

Regardless of the form of the protruding portion, the heat insulating space 10 can be generally formed between the housing 20 and the exterior cylinder 9 .

In the present invention, if the protruding force K is applied as shown in FIG. 3, then as shown in FIG. , 29, 30 will produce gaps, but because of the bonding agent 31 is filled therein, so phenomena such as liquid leakage and infiltration will not take place.

As shown in Figure 5, if there is a gap between the front end 32 of the lower portion 27 of the housing 20 and the inner surface of the bottom plate 5, because the front end 32 and the curved portion 30 of the bottom plate 5 do not overlap, the curved portion 28 and the curved portion There is no gap between 30 and 30, which further improves the bonding performance.

In addition, as shown in Figure 6, the protrusion 22 is pre-enlarged at the lower end side, and the outer casing 9 is bonded to the outside near its lower end, then the bottom edge of the container is larger than the bottom edge shown in Figure 4 or Figure 5. Larger, the static stability of the container can also be improved.

FIG. 9 and FIG. 10 are one embodiment of each invention applicable to the third aspect of the present invention, the fifth aspect of the present invention, and the sixth aspect of the present invention at the same time. The heat-insulating cup 1 is made of multi-layer thick paper coated with a synthetic resin film to have water resistance. On the shell wall 2 of the heat-insulating cup 1, from the upper shell part 4 below the top bead 3 and below the joint 6 of the shell wall 2 and the bottom plate 5 to the entire circumferential surface between the bottom end part 7 of the shell, it faces the container The inner side is recessed to form a reduced-diameter casing 8 .

The outer surface of the upper shell part 4 and the bottom end part 7 of the shell wall 2 is bonded with an outer casing 9 covering the entire outer surface of the shell wall 2 .

According to the above structure, the heat insulating space 10 is formed between the reduced-diameter case 8 and the outer casing 9 located between the upper case portion 4 and the case bottom end portion 7 . Above and below the heat insulating space are the bonding parts 11 , 12 of the above-mentioned upper casing part 4 , the casing bottom part 7 and the outer casing 9 .

The inner and outer sides of the bonding parts 11, 12 between the above-mentioned upper casing part 4, the bottom part of the casing 7 and the outer casing 9 are formed and bonded by molding and pressure, so they are pressure bonding parts. The shell portion with reduced diameter has an upper end forming an upward step close to the horizontal plane. The two bonding parts 11, 12 are multi-layer bonding structures, which can improve their rigidity.

Since the above-mentioned step 13 is an upward nearly horizontal plane, a periphery that can carry objects is formed on the step 13, and therefore some containers such as additives and small spoons can be placed on the top of the heat-insulating cup 1, and very stable.

Fig. 11 and Fig. 12 show two embodiments in which the third aspect, the fifth aspect, the sixth aspect of the present invention and the seventh aspect of the present invention are applied at the same time. Wherein, the structure of each part other than the reduced-diameter housing parts 14 and 15 is completely the same as that shown in Fig. 9 and Fig. 10, and its description is omitted. The application of the invention according to claim 7 of the present invention will be described below.

In the embodiment shown in FIG. 11 , the entire circumference of the center portion of the reduced-diameter case portion 14 is molded to form bonding protrusions bonded to the inner surface 16 of the outer casing 9 . part 17, and then use appropriate means to bond this protruding part 17 to the inner surface 16 of the outer casing 9, which improves the shape retention performance of the central part of the heat-insulating space 10, so that when holding the heat-insulating cup 1, the Deformation of the casing of the small container.

Shown in Fig. 12 is that the bonding protruding portion 18 formed on the whole circumference of the central part of the reduced-diameter casing 15 is bonded to the outside of the reduced-diameter casing 15 made of foaming adhesive styrene or hard shell paper, etc. The heat-insulating cup formed by the inner surface of the surface and the outer shell 9. The protruding portion 18 can perform the same function as the adhesive protruding portion 17 shown in FIG. 3 .

According to the invention of the first aspect of the present invention, the casing bottom end portion of the casing is projected outward over the entire circumference, so that the heat insulating space can be formed reliably and conveniently.

In addition, there is no need for external shell processing such as bottom curling processing and bonding with heat insulating materials.

Since the outer casing is made of flat paper, according to the invention of the second aspect of the present invention, the adhesion between the outer casing and the heat insulating cup body is easy.

In the current paper cup body molding outline, the bottom part of the shell of the paper cup body can be formed, that is, the protrusion can also be made in the bottom molding process, so the molding cost is low.

Furthermore, since the thickness of the protruding portion formed at the bottom end portion of the casing can be expanded to be a flange at rest, a higher static stability can be obtained when placed on a plane.

The protruding part on the bottom part of the shell is protrudingly formed on the entire circumference, so the strength in the radial direction of the bottom edge of the container can be improved.

According to the invention of the second aspect of the present invention, in addition to the invention of the first aspect of the present invention, the strength of the bottom edge of the container can be further improved by combining with the outer casing.

According to the third aspect of the present invention, since the bonding between the upper casing portion and the bottom end portion of the casing and the outer casing is achieved by pressurization, the rigidity is improved. Gripping the underside of the top bead with your fingers also results in less deformation of the grip. In the state where something is put in the heat insulating cup, even if it is placed on a flat surface with a strong force, the effect of tipping the heat insulating cup due to the deformation of the bottom part of the housing can be well prevented.

According to the invention of the fourth aspect of the present invention, linear convex lines are provided on the casing of the first aspect of the present invention or the second aspect of the present invention, so that the container casing can further improve the pressure bearing capacity. In addition, since the deformation of the exterior cylinder can be prevented, the heat insulating space can be maintained, and thus the heat insulating effect can be further enhanced.

According to the invention of the fifth aspect of the present invention, the entire circumference of the upper shell part below the top curling of the shell wall and the shell bottom end part of the joint part of the shell wall and the bottom plate is recessed to form a reduced-diameter shell, and the upper shell part The outer surface of the shell wall and the outer surface of the bottom part of the shell are all covered by the outer shell and bonded to it. A heat-insulating space is formed between the outer surface of the shell wall and the outer shell. Therefore, except for the heat-insulating cup The shell walls outside the upper shell portion below the top bead of the shell walls all have approximately the same insulating effect.

According to the invention of the sixth aspect of the present invention, since an upward nearly horizontal step is formed at the reduced diameter of the shell wall of the upper shell portion, this stepped portion can be used as a reinforcing structure when holding the upper portion of the shell wall by hand. While preventing loss of function and deformation of the shell wall, it can also be used as a supporting part for inserting containers and the like in the heat-insulating cup, and plays the role of holding some additives, small spoons and the like.

According to the invention of the seventh aspect of the present invention, since the central part of the reduced diameter is bonded to the inner surface of the outer casing by the bonding protrusion, this bonding protrusion also becomes a reinforcing part of the entire central part. , when the central part of the shell wall is held by hand, it can prevent the deformation of the outer shell without damaging the heat insulation performance of the shell.

In addition, any of the inventions of the fifth aspect of the present invention to the seventh aspect of the present invention does not have a structural part that is difficult to mold in production, and therefore has the effect of maintaining high productivity.

Claims (8)

1. A heat-insulating cup, the heat-insulating cup is composed of a shell, a bottom plate, and an outer cylinder made of a flat material represented by thick paper, and the lower part of the shell is folded inward to form a two-layer structure The bottom part of the housing, the bottom part of the housing is made into a protruding part that protrudes outwards in the entire circumferential direction, and a bottom plate is bonded to the protruding part. A flat shell cylinder is bonded on the surface, and a heat-insulating space is formed between the outer surface of the housing and the inner surface of the outer cylinder between the upper housing part of the housing and the outer peripheral surface of the above-mentioned protruding part. 2. The heat insulating cup according to claim 1, wherein the outer edge of the bottom plate is bonded to the inner surface side of the protrusion, and the lower end of the cylindrical outer casing is joined to the outer surface side of the protrusion. . 3. The heat-insulating cup according to claim 1, wherein the bonding portion between the upper shell portion and the bottom end portion of the shell and the outer casing is a pressure bonding portion. 4. The heat-insulating cup according to claim 2, wherein the bonding portion between the upper shell portion and the bottom end portion of the shell and the outer casing is a pressure bonding portion. 5. The heat insulating cup according to any one of claims 1-4, characterized in that, between the upper part of the housing and the protruding part, at least one linear protrusion abutting against the inner surface of the outer cylinder is provided. strip. 6. The heat-insulating cup according to any one of claims 1-4, characterized in that, the heat-insulating cup is composed of a flat thin material represented by thick paper to form a shell wall, a bottom plate and an outer casing, The entire circumference of the shell wall between the upper shell part below the top curling of the shell wall and the bottom end part of the shell below the junction of the shell wall and the bottom plate of the heat-insulating cup forms a reduced diameter that is concave toward the inside of the container. shell, On the outer surfaces of the upper shell part and the bottom end part of the shell, there is an outer casing sleeved to cover the entire outer surface of the shell, A thermal insulation space is formed between the reduced-diameter casing between the upper casing part and the bottom end part of the casing and the outer casing. 7. The heat insulating cup according to claim 6, characterized in that an upward step close to the horizontal plane is formed on the reduced diameter portion of the shell wall of the upper shell part. 8. The heat insulating cup according to claim 7, characterized in that, at the central portion of the reduced-diameter casing, a protrusion is formed on the entire circumference thereof, which is bonded to the inner surface of the outer casing.

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