KR100840926B1 - Paper cup of induction heat and manufacturing method thereof - Google Patents

Abstract

A paper cup for induction heating and a manufacturing method for the same are provided to put food into a paper cup and to heat the paper cup by using an induction heater. A paper cup for induction heating includes an outer circumference(40), a bottom material(10) and a complex film layer. The outer circumference includes a first paper layer(12) and a first thermoplastic resin layer(11). A second paper layer(12') and a second thermoplastic resin layer(11') are laminated to form the bottom material. The bottom material is adhered to the lower side of the outer circumference. The complex film layer is formed on the upper surface of the bottom material. An aluminum layer(32), a thermoplastic resin layer(33) and a protection film layer(31) are laminated in the complex film layer.

Description

Paper cup for induction heating and its manufacturing method {Paper Cup of Induction Heat and manufacturing method

The present invention forms an aluminum layer made of a high frequency induction heating body on the upper surface of the inner bottom of the paper cup to put water in the paper cup and to boil or warm the liquid contents such as water directly contained in the paper cup using an induction heater outside. It relates to a paper cup for induction heating and a manufacturing method thereof.

Paper cups are a necessity of modern life, along with the development of the instant food culture, and various kinds of disposable products have been developed and used.In addition, as a substitute for plastic or styrofoam synthetic resin products, it has been in the spotlight. If it's a cup, the container is being replaced by a paper cup at the government level.

As shown in Figure 1, the general paper cup (1) is a small variety from a shochu cup to a cup of coffee, beverages, ramen cups, snacks and chicken, such as a large-capacity container containing, for coffee In the case of beverages, a single-cylinder is mainly used. However, when used as a large-capacity container such as a cup ramen container, an insulation structure that is easy to hold for a long time along with keeping the contents is required.

However, in the case of the general paper cup (1) it was not possible to boil or warm the contents of the water or liquid by applying heat from the outside. Due to the nature of the paper material, it was not possible to apply heat directly to the paper cup due to problems such as burning paper first.

The present invention has been made to solve the above problems, using the induction heater used in a portable or ordinary home to a cup made of paper, indoors, outdoors, in the vehicle directly inside the paper cup water, coffee, tea, Ramen, porridge, soup and other contents can be boiled or warmed to overcome the disadvantages of heating, which is a disadvantage of conventional paper cups.

In addition, an aluminum layer made of a high frequency induction heater is formed on the bottom surface of the bottom of the paper cup so as to be heated with an external induction heater on the inner bottom surface of the paper cup. Another object of the present invention is to provide an induction heating paper cup and a method for manufacturing the same, which heat and heat the aluminum layer directly in contact with and heat the water effectively.

In the present invention as a means for solving the above object in the paper cup 60,

An outer circumferential surface 40 comprising a first paper layer 12 formed of a paper material, and a first thermoplastic resin layer 11 coated or laminated with a thermoplastic resin formed on an inner surface of the first paper layer 12; ;

A second paper layer 12 'bonded to a lower side of the outer circumferential surface 40 and formed of a paper material to form a bottom surface of the paper cup, and coated with a thermoplastic resin formed on an upper surface of the second paper layer 12' or A bottom floor material 10 formed by sequentially laminating the second thermoplastic resin layer 11 ';

The aluminum layer 32 is formed on an upper surface of the bottom floor material 10 and thermally bonds the aluminum layer 32 made of a high frequency induction heater to the aluminum layer 32 and the second thermoplastic resin layer 11 ′. A composite film layer 30 formed by sequentially stacking a heat-adhesive resin layer 33 formed on a lower surface thereof and a protective film layer 31 formed on an upper surface of the aluminum layer 32 to prevent oxidation and corrosion; It is provided.

In addition, the cross-sectional area of the aluminum layer 32 is smaller than the cross-sectional area of the bottom flooring material 10 formed on the bottom surface of the paper cup 60, the protective film layer 31 is characterized in that made of a plastic material. It is done.

Moreover, in the manufacturing method of the paper cup,

Forming a first thermoplastic resin layer coated or laminated with a thermoplastic resin on an inner surface of the first paper layer including an outer circumferential surface of the paper cup;

After the first step, the second step of forming a bottom floor by forming a second thermoplastic resin layer coated or laminated with a thermoplastic resin on the upper surface of the second paper layer forming the bottom surface of the paper cup;

After the second step, to form an aluminum layer consisting of a high frequency induction heating body on the upper surface of the bottom floor material and a protective film layer on the upper surface of the aluminum layer, the aluminum to heat-bond the aluminum layer and the second thermoplastic resin layer Forming a thermally adhesive resin layer formed on the lower surface of the layer, sequentially laminating and forming a composite film layer, wherein the composite film layer is smaller than the cross-sectional area of the bottom floor material;

After folding the circumferential edge of the bottom flooring material is not formed in the third step, the bottom of the bottom flooring material and the bottom surface of the outer circumferential surface of the fourth step of completing the paper cup; characterized in that it comprises a.

In addition, as a paper cup of another embodiment of the present invention,

An outer circumferential surface 40 comprising a first paper layer 12 formed of a paper material, and a first thermoplastic resin layer 11 coated or laminated with a thermoplastic resin formed on an inner surface of the first paper layer 12; ;

A second paper layer 12 'adhered to a lower side of the outer circumferential surface 40 and formed of a paper material to form a bottom surface of the paper cup 60;

An aluminum layer 32 disposed on an upper surface of the second paper layer 12 'and smaller than a cross sectional area of the second paper layer 12' and formed of a high frequency induction heater;

A heat-adhesive resin layer 33 formed on the lower surface of the aluminum layer to thermally bond the aluminum layer 32 and the second paper layer 12 ';

And a bottom bottom 10 made of a second thermoplastic resin layer 11 ′ coated or laminated with a thermoplastic resin on the entire bottom inner surface of the paper cup 60.

In addition, as a method of manufacturing a paper cup of another embodiment of the present invention,

Forming a first thermoplastic resin layer coated or laminated with a thermoplastic resin on an inner surface of the first paper layer including an outer circumferential surface of the paper cup;

After the first step, forming a second paper layer forming the bottom surface of the paper cup;

The cross-sectional area of the aluminum layer is made smaller than the cross-sectional area of the second paper layer formed in the second step, and a heat-adhesive resin layer is formed on the lower surface of the aluminum layer made of a high frequency induction heater, and the upper surface of the second paper layer Three steps of thermally bonding the thermally adhesive resin layer;

After the step 3, and the fourth step of forming a bottom floor by forming a second thermoplastic resin layer coated or laminated with a thermoplastic resin on the entire bottom inner surface of the paper cup;

After fold the circumferential edge of the bottom flooring material formed in the step 4 and the heat-bonding with the lower side of the folded bottom flooring and the outer peripheral surface; 5 steps to complete the paper cup; characterized in that it comprises a.

In addition, as a paper cup of another embodiment of the present invention,

An outer circumferential surface 40 comprising a first paper layer 12 formed of a paper material, and a first thermoplastic resin layer 11 coated or laminated with a thermoplastic resin formed on an inner surface of the first paper layer 12; ;

A second paper layer 12 'adhered to a lower side of the outer circumferential surface 40 and formed of a paper material to form a bottom surface of the paper cup 60;

An aluminum layer 32 laminated with an upper surface of the second paper layer 12 'and made of a high frequency induction heater;

And an underfloor 10 made of a second thermoplastic resin layer 11 'coated or laminated with a thermoplastic resin on the upper surface of the aluminum layer 32.

In addition, the aluminum layer 32 is the first incision 32a for cutting the inner surface in a circular shape, and the aluminum layer 32 of the aluminum layer 32 separated in a circular and annular shape by the first incision 32a. It further comprises a second incision 32b for cutting at least one portion of a ring-shaped aluminum layer in the radial direction, wherein the cross-sectional area of the first incision 32a is larger than the total cross-sectional area of the aluminum layer 32. It is characterized in that it is formed small.

In addition, as a method of manufacturing a paper cup of another embodiment of the present invention,

Forming a first thermoplastic resin layer coated or laminated with a thermoplastic resin on an inner surface of the first paper layer including an outer circumferential surface of the paper cup;

After the first step, forming a second paper layer forming the bottom surface of the paper cup to form an aluminum layer laminated with the second paper layer and being made of a high frequency induction heater;

After the second step, a ring-shaped aluminum layer of the aluminum layer separated into a circle and a ring shape by the first cut line is formed by making a first cut line smaller than the total cross-sectional area of the aluminum layer. 3 to cut in a radial direction through the second incision line to at least one portion;

A fourth step of forming a bottom flooring material by forming a second thermoplastic resin layer coated or laminated with a thermoplastic resin on an upper surface of the aluminum layer having the first and second incisions formed in the third step;

And folds the circumferential edge of the bottom flooring material formed in step 4, and then heat-bonds the bottom of the bottom flooring material with the outer circumferential surface to complete the paper cup.

By forming an aluminum layer on the inner bottom surface of the paper cup according to the present invention to enable induction heating, it is possible to boil or warm the contents of the food using the paper cup. Therefore, with an induction heater, you can use this induction paper cup directly to boil water or boil ramen, coffee, porridge, soup, etc. in the induction paper cup, regardless of your home, business, or vehicle. There is an effect that can be used.

In addition, since the aluminum layer made of a high frequency induction heater is in direct contact with water inside the paper cup, it is possible to heat contents such as water with high energy efficiency without heat loss to the outside, and the aluminum layer continuously heat transfers to water. Because the temperature is not overheated, the aluminum layer and the heat-bonded paper layer has another effect that can boil or warm the contents without burning.

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Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Figure 2 is a perspective view of the induction heating paper cup according to the present invention, Figure 3a, b, c, d, e, f, g is a longitudinal cross-sectional exploded perspective view of the induction heating paper cup, Figure 6 is a production of induction heating paper cup It is a process chart.

As shown in FIG. 2A, a first paper layer 12 made of a paper material and a first thermoplastic layer coated or laminated with a thermoplastic resin on an inner surface of the first paper layer 12 are formed on the outer circumferential surface 40 of the paper cup. The resin layer 11 is formed (S1).

The bottom surface of the paper cup 60 is also made of a second paper layer 12 'made of a paper material and the second thermoplastic resin layer 11' coated or laminated with a thermoplastic resin on the upper surface of the second paper layer 12 '. To form the bottom floor 10 (S2).

In thermally bonding the upper surface of the second thermoplastic resin layer 11 ′ and the aluminum layer 32, a thermal adhesive resin layer 33 is formed on the lower surface of the aluminum layer 32, and the thermal adhesive resin layer ( 33) An aluminum layer 32 made of a high frequency induction heater is formed on the upper surface to be heated by an external induction heater, and a protective film layer 31 made of a plastic material on the upper surface thereof to prevent corrosion such as oxidation of the aluminum layer 32. ) And sequentially stacked on the bottom surface 10 as shown in FIG. 3a to form a composite film layer 30 (S3), the second top surface of the bottom floor material (10) The bottom surface of the thermoplastic resin layer 11 'and the heat-adhesive resin layer, which is the bottom surface of the composite film layer 30, are thermally bonded as shown in FIGS. 3B and 3C to complete the entire bottom surface.

Here, the composite film layer 30 is formed smaller than the cross-sectional area of the bottom floor material (10).

That is, in the middle of forming the composite film layer 30, the cross-sectional area of the thermal adhesive resin layer 33 and the protective film layer 31 is formed based on the aluminum layer 32. The reason why the composite film layer 30 is smaller than the cross-sectional area of the bottom flooring material 10 is because food having a cross section of the aluminum layer 32, which is the center of the composite film layer 30, in the container is directly It is characterized in that by heating the aluminum layer 32 in contact with it can boil or heat water effectively through heat transfer.

After folding the circumferential edge of the bottom flooring material 10 in which the composite film layer 30 is not formed as shown in Fig. 3d, the bottom flooring material 10 and the folded bottom material 10 are shown in Figs. When the lower side of the outer circumferential surface 40 is thermally bonded to the bent portion to complete the paper cup 60 (S4) and when heated by an external induction heater, the aluminum layer 32 generates heat to form a liquid. It is characterized by easy heating to heat or boil.

Figure 4a, b, c, d, e, f, g is a longitudinal cross-sectional exploded perspective view of another embodiment of the induction heating paper cup according to the present invention, Figure 7 is a manufacturing process diagram of another embodiment of the induction heating paper cup.

As shown in FIG. 4A, portions forming the outer circumferential surface 40 of the paper cup are the same as described above (S1).

 A bottom surface of the paper cup 60 also forms a second paper layer 12 'made of paper (S2).

Thermal bonding formed on the lower surface of the aluminum layer 32 by forming a smaller cross-sectional area of the aluminum layer 32 made of a high frequency induction heater so as to be heated by an external induction heater than the cross-sectional area of the second paper layer 12 '. The resin layer 33 is formed and thermally bonded to the upper surface of the second paper layer 12 'and the thermal adhesive resin layer 33 as shown in FIG. 4B (S3).

As shown in FIGS. 4C and 4D, the second floor layer 12 'and the aluminum layer 32 are surrounded by a second thermoplastic resin layer 11' coated or laminated with a thermoplastic resin to form a bottom flooring material ( 10) to form the entire bottom surface (S4).

4E, 4F, and 4G, after folding the circumferential edge of the bottom flooring material 10, the portion of the bottom of the folded bottom flooring material 10 and the outer circumferential surface 40 is bent. Heat-bonding to complete the paper cup 60 (S5).

Figure 5a, b, c, d, e, f, g, h is a longitudinal cross-sectional exploded perspective view of another embodiment of the induction heating paper cup according to the invention, Figure 8 is a manufacturing process diagram of another embodiment of the induction heating paper cup to be.

As shown in FIG. 5A, portions forming the outer circumferential surface 40 of the paper cup are the same as described above (S1).

As shown in FIG. 5B, the bottom surface of the paper cup 60 also forms a second paper layer 12 ′ made of a paper material, laminated with an upper surface of the second paper layer 12 ′, and made of a high frequency induction heater. An aluminum layer 32 is formed (S2).

In this case, the adhesion of the second paper layer 12 ′ and the aluminum layer 32 may be performed by laminating or adhesive.

As shown in FIG. 5C, the first and second cut lines 32a and 32b of the aluminum layer 32 are formed (S3), and the first cut line 32a is larger than the total cross sectional area of the aluminum layer 32. ) To make a small incision, and at the same time, a second incision line is formed in at least one portion of the ring-shaped aluminum layer of the aluminum layer 32 separated into a circle and a ring shape by the first incision line 32a. Incision in the radial direction through.

As shown in FIG. 5D, the bottom surface is formed by forming a second thermoplastic resin layer 11 ′ coated or laminated with a thermoplastic resin on the upper surface of the aluminum layer 32 on which the first and second cut lines 32a and 32b are formed. 10) to form the entire bottom surface (S4).

The reason for cutting the aluminum layer 32 is that the high frequency induction heating is performed as shown in (a) of FIG. 5E only on the circular inner surface of the first cut line 32a which is the aluminum layer 32. The high frequency induction heating is not performed by cutting the second cut line 32b, which is a ring-shaped aluminum layer 32 separated by the first cut line 32a, in the radial direction.

The second incision 32b is formed of one part or several incisions. High frequency induction heating is possible only in the circular shape (inner surface of the aluminum layer) formed with the first cut line 32a of the aluminum layer 32 formed as described above, and the ring-shaped aluminum layer 32b does not generate heat and is shown in FIG. 5G. As described above, the edge of the paper cup that does not directly touch the liquid contents does not burn, and the aluminum layer 32 is only heated inside the circle of the first incision line 32a to heat or boil the contents of the liquid.

Subsequently, as shown in FIG. 5F, after folding the circumferential edge of the bottom flooring material 10, the lower part of the bottom flooring material 10 and the outer circumferential surface 40 are bent and thermally bonded. By completing the paper cup 60 as shown in Figure 5h (S5).

As described above, the paper cup 60 selects a corresponding one according to the type and form of food to be accommodated, and does not limit the shape and size thereof.

As described above, preferred embodiments of the present invention have been described, but the present invention is not limited to the above-described embodiments, and the present invention is not limited to the scope of the present invention as claimed in the following claims. Anyone with knowledge will have the technical spirit of the present invention to the extent that various modifications can be made.

1 is a perspective view of a conventional paper cup.

Figure 2 is a perspective view of the induction heating paper cup according to the present invention.

Figure 3a, b, c, d, e, f, g is a longitudinal cross-sectional exploded perspective view of the paper cup for induction heating according to the present invention.

4a, b, c, d, e, f, g are longitudinal cross-sectional exploded perspective views of another embodiment of the induction heating paper cup according to the present invention.

Figure 5a, b, c, d, e, f, g, h is a longitudinal cross-sectional exploded perspective view of another embodiment of an induction heating paper cup according to the present invention.

Figure 6 is a manufacturing process of the induction heating paper cup according to the present invention.

Figure 7 is a manufacturing process of another embodiment of the induction heating paper cup according to the present invention.

Figure 8 is a manufacturing process of another embodiment of the induction heating paper cup according to the present invention.

** Main Names of Drawings **

11: first thermoplastic resin layer 12: first paper layer

31: protective film layer 32: aluminum layer

33: heat adhesive resin layer 30: composite film layer

10: base material 60: paper cup

Claims (10)

In the paper cup 60 in which food is accommodated, An outer circumferential surface 40 comprising a first paper layer 12 formed of a paper material and a first thermoplastic resin layer 11 coated or laminated with a thermoplastic resin formed on an inner surface of the first paper layer 12; A second paper layer 12 'bonded to a lower side of the outer circumferential surface 40 and formed of a paper material to form a bottom surface of the paper cup, and coated with a thermoplastic resin formed on an upper surface of the second paper layer 12' or A bottom floor material 10 formed by sequentially laminating a second thermoplastic resin layer 11 ′; The aluminum layer 32 is formed on an upper surface of the bottom floor material 10 and thermally bonds the aluminum layer 32 made of a high frequency induction heater to the aluminum layer 32 and the second thermoplastic resin layer 11 ′. A composite film layer 30 formed by sequentially stacking a heat-adhesive resin layer 33 formed on a lower surface thereof and a protective film layer 31 formed on an upper surface of the aluminum layer 32 to prevent oxidation and corrosion; Equipped with The cross-sectional area of the aluminum layer 32 is formed smaller than the cross-sectional area of the bottom flooring material 10 formed on the bottom surface of the paper cup 60, The protective film layer 31 is an induction heating paper cup, characterized in that made of a plastic material. delete delete In the manufacturing method of the paper cup, Forming a first thermoplastic resin layer coated or laminated with a thermoplastic resin on an inner surface of the first paper layer including an outer circumferential surface of the paper cup; After the first step, forming a bottom floor by forming a second thermoplastic resin layer coated or laminated with a thermoplastic resin on an upper surface of the second paper layer forming the bottom surface of the paper cup; After the second step, to form an aluminum layer consisting of a high frequency induction heating body on the upper surface of the bottom floor material and a protective film layer on the upper surface of the aluminum layer, the aluminum to heat-bond the aluminum layer and the second thermoplastic resin layer Forming a heat-adhesive resin layer formed on the lower surface of the layer, sequentially laminating and forming a composite film layer, wherein the composite film layer is smaller than the cross-sectional area of the bottom floor material; After folding the circumferential edge of the bottom flooring material in which the composite film layer is not formed in step 3, the step 4 and the step of thermally bonding the bottom of the bottom flooring material and the outer peripheral surface to complete the paper cup; characterized in that it comprises a; Induction heating paper cup manufacturing method. In the paper cup 60 in which food is accommodated, An outer circumferential surface 40 comprising a first paper layer 12 formed of a paper material and a first thermoplastic resin layer 11 coated or laminated with a thermoplastic resin formed on an inner surface of the first paper layer 12; A second paper layer 12 'adhered to a lower side of the outer circumferential surface 40 and formed of a paper material to form a bottom surface of the paper cup 60; An aluminum layer 32 disposed on an upper surface of the second paper layer 12 'and smaller than a cross sectional area of the second paper layer 12' and formed of a high frequency induction heater; A heat-adhesive resin layer 33 formed on the lower surface of the aluminum layer to thermally bond the aluminum layer 32 and the second paper layer 12 '; An induction heating paper cup comprising: a bottom bottom material (10) formed of a second thermoplastic resin layer (11 ') coated or laminated with a thermoplastic resin on the entire inner bottom surface of the paper cup (60). In the manufacturing method of the paper cup, Forming a first thermoplastic resin layer coated or laminated with a thermoplastic resin on an inner surface of the first paper layer including an outer circumferential surface of the paper cup; After the first step, forming a second paper layer forming the bottom surface of the paper cup; The cross-sectional area of the aluminum layer is made smaller than the cross-sectional area of the second paper layer formed in the second step, and a heat-adhesive resin layer is formed on the lower surface of the aluminum layer made of a high frequency induction heater, and the upper surface of the second paper layer Three steps of thermally bonding the thermally adhesive resin layer; After the step 3, the step 4 to form a bottom floor by forming a second thermoplastic resin layer coated or laminated with a thermoplastic resin on the entire bottom inner surface of the paper cup; And folding the circumferential edge of the bottom bottom material formed in step 4 and then thermally bonding the bottom bottom material with the lower side of the outer circumferential surface to complete the paper cup. In the paper cup 60 in which food is accommodated, An outer circumferential surface 40 comprising a first paper layer 12 formed of a paper material and a first thermoplastic resin layer 11 coated or laminated with a thermoplastic resin formed on an inner surface of the first paper layer 12; A second paper layer 12 'adhered to a lower side of the outer circumferential surface 40 and formed of a paper material to form a bottom surface of the paper cup 60; An aluminum layer 32 laminated with an upper surface of the second paper layer 12 'and made of a high frequency induction heater; And an underfloor 10 made of a second thermoplastic resin layer 11 'coated or laminated with a thermoplastic resin on the upper surface of the aluminum layer 32. The aluminum layer 32 has a first cut line 32a for circularly cutting the inner surface thereof, and a ring shape among the aluminum layers 32 separated in a circle and a ring shape by the first cut line 32a. Induction heating paper cup further comprises a second incision line (32b) for cutting at least one portion of the aluminum layer in the radial direction. delete The method of claim 7, wherein Induction heating paper cups, characterized in that the cross-sectional area of the first cut line (32a) is formed smaller than the total cross-sectional area of the aluminum layer (32). In the manufacturing method of the paper cup, Forming a first thermoplastic resin layer coated or laminated with a thermoplastic resin on an inner surface of the first paper layer including an outer circumferential surface of the paper cup; After the first step, forming a second paper layer forming the bottom surface of the paper cup to form an aluminum layer laminated with the second paper layer and formed of a high frequency induction heater; After the second step, a ring-shaped aluminum layer of the aluminum layer separated into a circle and a ring shape by the first cut line is formed by making a first cut line smaller than the total cross-sectional area of the aluminum layer. 3 to cut in a radial direction through the second incision to one or more portions; A fourth step of forming a bottom floor by forming a second thermoplastic resin layer coated or laminated with a thermoplastic resin on an upper surface of the aluminum layer in which the first and second incisions are formed in the third step; And folding the circumferential edge of the bottom bottom material formed in step 4 and then thermally bonding the bottom bottom material with the lower side of the outer circumferential surface to complete the paper cup.

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