KR20200034624A - Aluminium laminated paper vessel for environment and human health and the making method of it - Google Patents

Abstract

The present invention protects human health from carcinogens of paper cups. In addition, provided is an aluminum laminated paper cup which can be reused. The paper cup of the present invention arranges aluminum foil therein, thereby having no carcinogen, being safe for health, and being good for resource recycling since paper and aluminum are easily separated when being soaked in the water when a water-soluble adhesive is used. Also, an earth environment is preserved and a climate change is prevented. A container of the present invention is used in a coffee cup, a cup noodle container, a cup rice container and a food container, and is applied to food in which the containers are used.

Description

Aluminum laminated paper vessel for environment and human health and the making method of it

The present invention relates to an aluminum endothelial paper container and a method for manufacturing the same. It also includes food products that use this container.

The present invention is to protect the human health from environmental hormones and carcinogens of synthetic resin by placing an aluminum endothelial containing aluminum foil inside the paper cup container, it is also possible to easily reuse the paper cup container and recycle the resources of the paper. The present invention relates to a food container including a disposable coffee cup (such as a beverage cup), a cup ramen container (such as a cup noodle container), a cup rice container, a food packaging container, and a paper cup, and food using the food container.

Until now, there was no paper cup container that is safe for health, eco-friendly, and can be reused, recycled, and decomposed naturally. Paper cups so far are harmful to both health and the environment.

Conventional paper cups have synthetic resins such as polyethylene (PE), polypropylene (PP), and nylon (NY) attached to the inner surface, and when caring for hot food, carcinogens and environmental hormones are eluted and harm human health. In addition, recycling of resources was difficult due to the fusion of synthetic resin and paper, and reuse was difficult. When there was a synthetic resin layer on the outer surface of the paper, a manufacturing process was added to increase the cost and recycling of the paper was difficult.

In addition, it is difficult to form aluminum endothelial containers due to low adhesion between aluminum and synthetic resins such as PE, PP, and PS (polystyrene) used in conventional food containers. PE is somewhat adhesive, but insufficient.

Biodegradable plastics, which are known to be environmentally friendly, are made of synthetic resin mixed with biodegradable materials such as starch. The starch is decomposed upon landfill, but the plastic component is not decomposed, but becomes a fine plastic and enters the ecosystem (aqueous, animal, plant, and soil), which is more harmful to the health of nature and living things. In the end, they are neither green nor healthy.

In addition, a paper cup made of poly lactic acid (PLA) made of corn starch, which is known as eco-friendly, is also harmful to health by mixing about 15 to 20% of chemicals. Chemicals are eluted from the PLA cup itself, and when the corn starch is decomposed during landfill, the chemicals are finely dispersed and introduced into the ecosystem, which is harmful to the environment and health.

Until now, aluminum endothelial containers capable of shielding synthetic resin hazardous materials cannot be sealed, so aluminum endothelial containers have not been industrialized. Also, for waterproofing the paper, synthetic resin lining was always used.

2018.3.29. A California court in the United States ordered the coffee cup to indicate that it had carcinogen because of the acrylamide produced when roasting the coffee. However, the problem of high amounts of carcinogens and endocrine disruptors (environmental hormones) in the synthetic resin of disposable coffee cups is a more serious health problem. Meanwhile, as environmental problems have recently emerged, interest in reuse and recycling of containers has increased. For recycling, the aluminum and paper envelopes must be easily separated, but so far there have been no such products on the market. The carcinogenicity and harmfulness of existing disposable cups are becoming increasingly known.

[Advanced technical literature]

[Patent Document]

Utility Model Application No. 20-1998-0015053 "Harless structure of disposable container using aluminum sheet or foil"

Patent Publication No. 10-1998-0072028 "Packing container for cup noodles and container sides made of aluminum and synthetic resin"

Patent Registration No. 10-0607404 "Disposable food container using thin aluminum plate"

Registered Patent No. 10-1466224 "Aluminum endothelial disposable food container"

Registered Patent No. 10-1616852 "A method for manufacturing aluminum endothelial paper cup ramen containers"

Paper cup containers currently used are used for coffee cups, cup noodles, cup rice, food containers, beverage containers, etc., and have the following problems.

1. There is no paper cup that is safe for human health. Synthetic resins such as PE and PP inside cups dissolve large amounts of carcinogens and endocrine disruptors (environmental hormones) upon contact with hot food.

2. Synthetic endothelial resin and outer shell (paper) are fused, making it difficult to recycle paper.

3. Discard after use once for disposable use.

4. It is difficult to form aluminum endothelial containers due to low adhesion between aluminum and synthetic resins such as PE, PP, and PS used in existing food containers. PE is somewhat adhesive, but insufficient.

5. When placing a synthetic resin layer on the outer surface of the paper, the manufacturing process is added, which increases the cost and makes it difficult to recycle the paper.

It is an object of the present invention to provide an aluminum endothelial paper container that is safe for health in a paper container, and to provide an aluminum endothelial paper container having excellent adhesive strength during container molding.

Another object of the present invention is to provide an aluminum endothelial paper container in which the aluminum endothelial and the paper sheath are easily separated and the paper is easily recovered.

Another object of the present invention is to provide a luxurious disposable food container.

Another object of the present invention is to provide a reusable aluminum endothelial paper container.

Another object of the present invention is to provide a light and durable aluminum endothelial container to provide a portable aluminum endothelial paper container.

Another object of the present invention is to protect human health from environmental hormones or carcinogens in disposable food containers, and to conserve forests by reusing containers and recycling paper resources to contribute to the prevention of global warming.

Aluminum endothelial paper container of an embodiment of the present invention for achieving the above object is

An aluminum endothelial paper container including a bottom portion and a side portion completely surrounding the outer circumference of the bottom portion, wherein the side portion has an aluminum inner shell and a paper outer shell formed outside the aluminum inner shell, and the outer surface of the paper outer shell has the outer paper. Synthetic resin may be further attached to the outside or exposed to the paper, and one or more of the side surface portion and the bottom portion bonding, the molding forming the side portion, and the roll sheet-like bonding between the aluminum inner shell and the paper outer shell may melt. Or it is bonded by one or more of a water-soluble adhesive having a decomposition point of 100 ° C or higher, a synthetic resin adhesive having a melting point or a decomposition point of 100 ° C or higher, or a synthetic resin adhesive having a melting point or a decomposition temperature of 100 ° C or higher and containing a polar substance.

Aluminum endothelial paper container of another embodiment of the present invention is a paper container on which an aluminum foil is located on the inner surface, after cutting the side portion (side sheet), at the bottom joining portion of the aluminum surface that is joined to the bottom plate (base, bottom plate) among the side surfaces. , A water-soluble adhesive having a melting point or a decomposition point of 100 ° C or higher, a synthetic resin adhesive having a melting point or a decomposition point of 100 ° C or higher, a synthetic resin adhesive containing a polar substance having a melting point or a decomposition point of 100 ° C or higher, One or more of the above is applied to the side portion (side sheet) and the bottom plate (base sheet, bottom plate) to be joined.

The aluminum endothelial paper container according to another embodiment of the present invention is a paper container in which an aluminum foil is located on the inner surface, and on one or more parts of the side or bottom of the aluminum surface among the side parts (side sheets) of the container, a melting point or a decomposition point is 100. As being more than ℃, more preferably as the softening point is more than 100 ℃; One or more of a water-soluble adhesive, a synthetic resin adhesive, a synthetic resin adhesive containing a polar substance for adhesion, or a biodegradable synthetic resin adhesive containing a polar substance for adhesion may be applied to the entire side or bottom portion of the container joint. Partially applied.

The aluminum endothelial paper container of another embodiment of the present invention includes a bottom part and a side part that completely surrounds the outer circumference of the bottom part, an aluminum endothelial only on the side part, and a paper sheath formed outside the aluminum endothelial, and The outer surface of the paper may be exposed to the outside or synthetic resin may be attached to the outside of the paper, the side portion and the bottom portion of the bonding, forming the side portion of the bonding, the roll of the sheet between the aluminum inner shell and the paper outer shell 1 Species abnormalities; It is made by one or more of a water-soluble adhesive having a melting point or decomposition point of 100 ° C or higher, a synthetic resin adhesive having a melting point or decomposition point of 100 ° C or higher, and a synthetic resin-containing adhesive having a melting point or decomposition point of 100 ° C or higher and containing a polar substance.

In one embodiment, the water-soluble adhesive is polyvinyl alcohol-based, polyvinyl acetate-based, ethylene vinyl-acetate-based, hydroxypropyl methylcellulose, hydroxypropyl methylcellulose phthalate, luxurious vegetable starch, dextrin, soluble starch, oxidized starch, Glue, casein, gum arabic, glue, biodegradable adhesive resin, acrylic emulsion, cellophane.

In one embodiment, the synthetic resin-containing adhesive containing the polar material is an epoxy resin, polyamine, acid anhydride, polyamide, resol resin, polysulfide, acrylic, phenol resin, polyurethane, silicone, rubber, poly Amideimide, polyimide, polybenzimidazole, polyester, polyvinyl acetate, polyolefin, nylon, urea resin, aniline resin, toluenesulfonic acid amide, isocyanate alkyd, cyanoacrylate, Polydiphenyl ether-based, polyvinyl acetate-based, melamine-based may include one or more.

In one embodiment, the polyamine system comprises at least one of diethyltriamine, triethylenetetramine, diethylaminopropylamine, xylenediamine, modified aliphatic polyamine, phenylenediamine, aminodiphenylsulfone, and the acid The anhydride system may include one or more of maleic anhydride, phthalic anhydride, and hexahydrophthalic anhydride.

In one embodiment, the synthetic resin adhesive or the synthetic resin adhesive containing the polar material is a polyolefin-based synthetic resin; Polyester type; Nylon series; It may contain one or more synthetic resins of the polystyrene-based.

In one embodiment, the synthetic resin containing the polar material, HDPE, MDPE, LDPE, LLDPE, PP, polyester, nylon, PS, PET, biodegradable synthetic resins, PLA (poly lactic acid), biodegradable water It can be used in combination with any one or more of the tributaries.

In one embodiment, the water-soluble adhesive, the synthetic resin adhesive or the synthetic resin adhesive containing the polar material may include biodegradable resins.

In one embodiment, the water-soluble adhesive, the synthetic resin adhesive or the synthetic resin adhesive containing the polar material may include a hot melt adhesive.

In one embodiment, the synthetic resin that can be attached to the outer surface of the paper envelope may include a polar adhesive material or biodegradable resins.

In one embodiment, the bottom portion and the side portion are joined by at least one of a water-soluble adhesive having a melting point or a decomposition point of 100 ° C or higher, a synthetic resin-containing adhesive having a melting point or a decomposition point of 100 ° C or higher, and containing a polar substance. Can be.

In one embodiment, the aluminum endothelial paper container may include an aluminum endothelial paper cup.

In order to increase the adhesion during container molding, the synthetic resin adhesive in the present invention having a melting point or a decomposition point of 100 ° C or higher may contain a polar material, and also includes a synthetic resin containing a polar material. In particular, the synthetic resin adhesive used for the side (junction) side and bottom (bottom) joints that require strong adhesion preferably contains a polar material having a melting point or a decomposition point of 100 ° C or higher.

 In this concept, a method for manufacturing a paper cup container in which an aluminum foil of an embodiment of the present invention is located on an inner surface, comprising: a step of removing oil from the aluminum foil; Step 2, using a water-soluble adhesive or a synthetic resin adhesive, to bond the rolled paper and aluminum in a plate shape to make a fabric with aluminum attached thereto; Cutting the fabric produced in step 2 and rolling it round, using a water-soluble adhesive or a synthetic resin adhesive, forming a paper cup side sheet of aluminum inner skin; After cutting the base with the fabric or a separately prepared base or base fabric, forming a paper cup using a water-soluble adhesive or a synthetic resin adhesive between the sides and base; It provides an easy-to-recycl eco-friendly pro-health aluminum endothelial paper cup manufacturing method characterized in that it comprises the above steps in any order.

A method of manufacturing a paper container in which an aluminum foil according to another embodiment of the present invention is located on an inner surface includes manufacturing a side portion, and joining the side portion and a bottom portion, and manufacturing the side portion comprises a roll sheet-shaped aluminum inner shell and a paper outer shell. It may include bonding with an adhesive, wherein the outer surface of the paper shell may be attached with a synthetic resin, and when bonding the aluminum shell and the paper shell, the adhesive has a melting point or a decomposition point of 100 ° C. or higher, and a water-soluble adhesive. , Synthetic resin-containing adhesives, polar resin-containing synthetic resin-containing adhesives, one or more; The adhesive used when forming the container by round-molding the side portion or by bonding the side portion and the bottom portion has a melting point or a decomposition point of 100 ° C or higher, and is one of a water-soluble adhesive and a synthetic resin-containing adhesive containing a polar substance. Use above.

In another embodiment of the present invention, a method for manufacturing an aluminum endothelial paper container is prepared by bonding an aluminum endothelial and a paper sheath with a first adhesive to produce a side sheet, and connecting both connecting portions of the side sheets with a second adhesive to connect the side portions. Manufacturing, manufacturing a bottom portion, and bonding the side portion and the bottom portion with a third adhesive to produce the aluminum endothelial paper container, wherein at least one of the first adhesive, the second adhesive, and the third adhesive Silver melting point or decomposition point is not less than 100 ℃; Water-soluble adhesives, synthetic resin-containing adhesives, and polar resin-containing synthetic resin-containing adhesives.

Detailed means for solving the above problems and solving problems are described below for each item.

1. Environmental hormone and carcinogen shielding plan-The aluminum container containing aluminum foil is placed inside the paper container to prevent the dissolution of carcinogen and environmental hormone in food.

2. Reusable, advanced and portable optimization method-The inside of the paper container is made of aluminum, which is luxurious, easy to clean, and can be reused many times.

3. Resource recycling plan-When water-soluble adhesive is used for bonding the aluminum inner skin and paper outer shell, when the paper container is immersed in water, the aluminum inner shell and the paper outer shell are easily separated to facilitate resource recycling.

4. Adhesion plan of aluminum inner paper and paper outer skin-Containers mainly for reuse may use synthetic resin adhesives, but containers mainly for recycling of paper resources are glued and dried with a water-soluble adhesive. Drying may include heating. It is better to use a water-soluble adhesive that is almost non-toxic.

5. Types of water-soluble adhesives that can be used -Water-soluble adhesives include polyvinyl alcohol (PVA), polyvinyl acetate (PVAc, vinyl acetate), ethylene vinyl acetate (EVA), hydroxypropyl methylcellulose (HPMC), and hydroxy Contains one or more of hydroxypropyl methylcellulose phthalate (HPMCP), luxurious vegetable starch, dextrin, soluble starch, oxidized starch, glue, casein, gum arabic, paste, biodegradable adhesive resin, acrylic emulsion, cellophane It is desirable to do.

Recycled containers do not require paper recycling, so you can use synthetic resin adhesives. When bonding the aluminum inner skin and the paper outer skin, in addition to the water-soluble adhesive, it can be adhered using synthetic resins such as PE (poly lactic acid), starch-containing plastics, and synthetic resins such as PE having a melting point or decomposition point of 100 ° C or higher. . In the present invention, synthetic resin is used as a broad concept that encompasses both general synthetic resins and biodegradable synthetic resins.

6. Water-soluble adhesive when molding containers -Since the adhesive for forming a container (cup) requires a large adhesive strength, it is preferable to have a large adhesive strength, such as polyvinyl acetate (PVAc) or ethylene vinyl acetate (EVA).

When water-soluble is used, drying time is required, so that the solid content is increased as much as possible and the water content is reduced. In the case of PVAc, the solid content of general products is about 40 to 62%. PVAc is a water-soluble adhesive with a high melting point of 135 ° C and excellent bonding strength. The melting point of EVA is 40 ℃ ~ 110 ℃. When mixing different water-soluble adhesives, it can be used if the melting point or decomposition point is 100 ° C or higher. It is most preferred to apply the joint to the joint of the side.

If a water-soluble adhesive is used for forming and bonding the side portion and the bottom portion of the container, it is preferable to use only a container used for short-term storage since the bonding portion of the container for long-term storage of water may be absorbed and peeled off.

(Preferably PVC, biodegradable synthetic resin having a softening point of 100 ℃ than) a synthetic resin melting temperature of less than 100 ℃ When using synthetic resin for the bonding of more robust, fast-7 synthetic resin adhesive material for forming the container It is preferable to use, and it is more preferable that the melting point or decomposition point contains a polar material for adhesion of 100 ° C or higher, and the softening point is 100 ° C or higher as a whole. Arrangement of the synthetic resin joints can be performed in one of the following ways.

(1) In the roll state of the fabric, it is placed on the outer surfaces of the side (side paper) and bottom (bottom) as a whole. (A melted resin is coated on one side of a paper fabric with a T die, etc., or a film is attached.)

(2) Partially placed at the joint site of the side (side) or bottom (base).

(3) The side paper is placed on the side of the side of the joint after cutting, and the base is placed on the entire outer surface in the roll of fabric.

(4) The side paper is placed on the side of the side of the side after cutting, and when placed on the aluminum side of the side of the side, it is not necessary to place the synthetic resin on the outside of the base, since only the synthetic resin attached to the side can be cupped. In this case, the paper can be exposed to the entire outside of the cup, making it easy to recycle resources. Of course, placing the synthetic resin together on the outer surface of the base is more advantageous for sealing.

8. Not using or reducing synthetic resin-When using water-soluble adhesive, it is possible to use or reduce the use of synthetic resin to about 0 ~ 10%.

8. Decomposition method during landfill-When using biodegradable synthetic resin among synthetic resins, it is well decomposed during landfill.

9. Cellophane film use method-When using the cellophane film when bonding the aluminum thin layer and the paper sheet, use the one-side moisture-proof cellophane film so that the moisture-proof surface is attached to the surface contacting the aluminum thin layer, or between the aluminum thin layer and the cellophane film. It is preferred to have a synthetic resin layer.

11. Paper exposure outside the cup -To facilitate the recycling of paper resources and minimize the use of synthetic resin, use a water-soluble adhesive when bonding the rolled aluminum inner shell to the outer paper shell, and at least the side paper is exposed to the outer surface even when the container is molded and glued. It is also possible to expose the underlying paper to the outside. If a water-soluble adhesive is used, the paper is wet and easily separated when the container is immersed in water during resource recycling. It is preferable that the container for reuse has a synthetic resin layer on the outer surface for waterproofing the outer surface during washing.

12. Base (bottom part)-The paper for the base does not attach an aluminum inner shell and is biodegradable, such as synthetic resins such as PE, PP, NY, or synthetic resin mixed with starch, poly lactic acid (PLA), biopol, etc. Synthetic resins can be attached. Synthetic resin containing a polar material for adhesion may be applied externally or partially. The base may be made of one or more layers of synthetic resin without paper, and inserted into the cup to form a cup.

13. Attachment of adhesive to the bonding part of the side paper-Even if a thin layer of aluminum is used on the inner surface of the base and paper is exposed on the outer surface of the base, synthetic resin (synthesis containing polar material for adhesion) is applied to the aluminum part of the lower part of the side paper (30 parts in FIG. 9) Resin is more preferable) or when a water-soluble adhesive is attached, sealing bonding is possible.

The main effects of the present invention are as follows.

1. The aluminum endothelial prevents carcinogens and environmental hormones in the paper cup.

2. When the aluminum endothelial container is molded, the adhesion strength between the side and base joints is very excellent, thereby realizing the aluminum endothelial container.

3. When using water-based adhesives, disposable food containers that facilitate paper recycling are provided.

4. It provides high-quality paper containers with metallic luster.

5. It provides a disposable food container that can be washed and reused.

6. Forests are protected by paper recycling and contribute to the prevention of global warming.

7. Reducing the amount of synthetic resin used in paper cups, reducing plastic contamination

8. The inside is made of metal, and recycled paper can be used, reducing manufacturing cost.

9. It greatly contributes to promoting the health of people around the world.

10. Contribute to the related industries and economic development.

1 is a schematic representative cross-sectional view mainly focusing on a side portion of an aluminum endothelial paper container of the present invention. The inner surface is attached with aluminum foil (1), the outside is paper (4), and the paper and aluminum are attached with an aqueous adhesive (3). A synthetic resin layer (which may contain a polar material or biodegradable resins) may be disposed on the outside of the paper. As the outer synthetic resin layer, a foamed synthetic resin (gas-containing synthetic resin) may be used.
Figure 2 is an aluminum endothelial paper container (silver foil paper container, silver foil paper cup) 850cc prototype photo
Figure 3 is an aluminum endothelial paper container 13 oz (≒ 368cc) beverage cup (coffee cup) prototype photo
Figure 4 is an aluminum endothelial paper container 850cc food container and 13oz beverage cup prototype photo
FIG. 5 is a partial cross-section of an embodiment in which an aqueous adhesive layer 3 is disposed between an aluminum inner shell 1 and a paper outer shell 4.
Figure 6 is a part of the cross-section of an embodiment in which a synthetic resin adhesive layer 2 is disposed between the aluminum inner shell 1 and the paper jacket 4
FIG. 7 is a partial cross-section of an embodiment in which a synthetic resin adhesive layer 2 and an aqueous adhesive layer 3 are disposed between an aluminum inner shell 1 and a paper jacket 4.
8 is an embodiment in which a synthetic resin adhesive or a water-based adhesive containing a polar material for forming a container is locally disposed on the side portion 20 of the side paper (side portion) 10. When using a non-polar synthetic resin therein, it is preferable that the outer surface to be bonded thereto contains a polar material to improve the bonding strength.
9 is a synthetic resin adhesive containing a polar material or a synthetic resin containing a non-polar synthetic resin in the side portion 20 of the side portion (side paper), or an aqueous adhesive is disposed, and the lower portion of the side portion (side paper) 10 (30) An example in which a synthetic resin adhesive containing a polar substance, a non-polar synthetic resin, or a water-soluble adhesive is disposed on an aluminum surface. When arranging the non-polar synthetic resin, it is preferable to dispose a synthetic resin containing a polar substance having a melting point of 100 ° C. or higher on the outer surface of the side (side) or base (bottom, bottom).
5 to 7, the outer surface of the paper may be exposed, or a synthetic resin may be attached to the outer surface of the paper. The synthetic resin 5 on the outer surface may be attached in whole or in part, and synthetic resins or biodegradable resins containing polar materials may be used. In addition, a foamed synthetic resin containing gas can also be placed on the outer surface of the container. The foamed synthetic resin is a synthetic resin on the outer surface instead of a double cup, and is used to obtain a heat retention effect or a heat transfer prevention effect.

With reference to the accompanying drawings, it will be described in detail so that those skilled in the art to which the present invention pertains may be easily carried out by examples. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Throughout the specification, the same reference numerals are assigned to the same or similar components.

When describing a numerical range in this specification, “X to Y” means X or more and Y or less (X≤ and ≤Y).

The present invention comprises an aluminum endothelial paper container comprising a bottom portion and a side portion that completely surrounds the outer circumference of the bottom portion, the side portion having an aluminum inner shell and a paper outer shell formed outside the aluminum inner shell, wherein the aluminum inner shell and An adhesive layer formed by at least one of a water-soluble adhesive having a melting point or a decomposition point of 100 ° C. or higher, and a synthetic resin adhesive (a polar material may be contained) having a melting point or a decomposition point of 100 ° C. or higher is formed between the paper envelopes. A synthetic resin may be attached to the paper envelope.

In the present invention, the melting point or decomposition point may be preferably 100 ° C to 200 ° C.

In addition, in detail, the aluminum endothelial paper cup of the present invention is generally a paper cup container including an aluminum foil layer, on which the inner aluminum foil layer 1 is disposed, and the outer surface is paper 4, synthetic resin 2, and the like. Any material such as complex or starch is used. The adhesive used for bonding the sheet-like raw materials (paper, aluminum, synthetic resin) of the container or at the time of forming the container is a water-soluble adhesive 3 having a melting point or a decomposition point of 100 ° C or higher (in the present invention, 100 ° C or higher) Even water-soluble adhesives such as starch starch having no special melting point are included in the water-soluble adhesive having a melting point or decomposition point of 100 ° C or higher) or a synthetic resin adhesive (2). In order to increase the adhesion during container molding, it is preferable to use a synthetic resin adhesive containing a polar material having a melting point or a decomposition point of 100 ° C or higher.

In the present invention, water-based adhesive is used in the same sense as water-soluble adhesive.

1 is a schematic cross-sectional view of the aluminum endothelial paper container of the present invention. Referring to FIG. 1, an aluminum endothelial paper container includes an aluminum endothelial 1, a paper sheath 4, and an adhesive layer 2 formed between the aluminum endothelial 1 and the paper sheath 4. The synthetic resin layer 5 may be disposed outside the paper envelope 4.

The synthetic resin 5 on the outer surface of FIGS. 5 to 7 may be attached in whole or in part, or may be made of a synthetic resin containing polar materials. In addition, when it is desired to obtain a heat insulating effect or a heat transfer prevention effect with the synthetic resin on the outer surface without using a double cup, this effect can be obtained by foaming the synthetic resin layer to contain a gas. Foaming of the synthetic resin layer can be made arbitrarily before or after cup forming.

The aluminum endothelial paper container means a container having an aluminum endothelial and a paper outer sheath.

The reason that the melting point or decomposition point of the water-soluble adhesive or the synthetic resin adhesive should be 100 ° C or higher is because the temperature of boiling water during cooking is 100 ° C, so that the bonding of the container must be maintained at 100 ° C.

When the water-soluble adhesive has a melting point or a decomposition point of 100 ° C or higher, not only is the entire water-soluble adhesive having a melting point or a decomposition point of 100 ° C or higher, but also one of a plurality of components included in a single type or a mixture of several types of water-soluble adhesives It may also include a case where the melting point or decomposition point is 100 ° C or higher. Preferably, it includes the case where the melting point or decomposition point of the whole water-soluble adhesive is 100 ° C or higher. More preferably, the softening point of the entire water-soluble adhesive is also preferably 100 ° C or higher.

In the present invention, preferably, the softening point may be 100 ° C to 200 ° C.

The melting point or decomposition point of the synthetic resin adhesive is 100 ° C or higher, as well as the entire melting point or decomposition point of the entire synthetic resin adhesive, or the melting point or decomposition point of one component among a plurality of components included in the synthetic resin adhesive. It may also include a case of 100 ° C or higher. Preferably, it includes the case where the melting point or decomposition point of the whole synthetic resin adhesive is 100 ° C or higher.

The "melting point", "decomposition point", softening point "can be measured by a conventional method known to those skilled in the art for the adhesive material. If there are multiple measurement methods, it is not limited to one method.

The term “container” or “cup” has the same meaning in the present invention, and includes a cup for holding a liquid beverage or a bowl for holding a liquid + solid food. For example, the “container” may be a coffee cup, cup ramen container, soup container, rice container, and the like.

The “aluminum inner shell” may include an aluminum foil, an aluminum foil layer, an aluminum foil, and the like. In the present invention, aluminum foil is mainly used.

Aluminum foil is placed inside the paper cup to prevent carcinogens and environmental hormones that are eluted into the food. In addition, the use of water-soluble adhesives facilitates recycling of resources because the adhesion of aluminum foil and paper is easily separated when immersed in water. The container is luxurious and can be reused. The present invention is easy to reuse and recycle the paper cup, and is also capable of natural decomposition. The present invention reduces the process than the conventional method of manufacturing an aluminum endothelial container, can significantly reduce the use of synthetic resin, is beneficial to the environment and reduces manufacturing costs.

Synthetic resins used in the present invention (which may include biodegradable synthetic resins such as PLA, may also contain adhesive polar materials) or polar materials for adhesives that have a melting point or decomposition temperature of 100 ° C or higher . More preferably, a material having a softening point of 100 ° C or higher is used.

The details of the present invention are as follows.

1. Reusable design of container: It is reusable because it is luxurious and easy to clean with aluminum lining. In addition, it is light and sturdy, suitable for portable use. Minimize the consumption of wood resources.

If the synthetic resin is placed on the outer surface of the container, it is waterproof, so it is more convenient for washing and reuse than the product that exposes the paper on the outer surface, so it can be reused for a long time.

2. One or more of the following (1) to (4) is applied to the design for resource recycling.

(1) When the used container is immersed in water, the paper is exposed on most of the outer surface so that the paper on the outer surface is wet and separated.

(2) When bonding the aluminum thin layer on the roll and the paper sheet, it is dried by heat bonding with a water-soluble adhesive. It can also be used for cup forming bonding of the sides or base.

The melting point or decomposition point of the water-soluble adhesive is preferably 100 ° C or higher, and it is preferable that the synthetic resin for cup molding bonding is higher than the melting temperature at the time of bonding. Water-soluble adhesives include polyvinyl alcohol (PVA), polyvinyl acetate (PVAc, vinyl acetate), EVA (ethylene vinyl acetate), hydroxypropyl methylcellulose (HPMC), hydroxypropyl methylcellulose Phthalate (Hydroxypropyl methylcellulose phthalate, HPMCP), glue, casein, gum arabic, paste, biodegradable adhesive resin, acrylic emulsion, may include one or more of vegetable starch. The vegetable starch may include, but is not limited to, one or more of gelatinized starch, dextrin, soluble starch, and oxidized starch. What can be used as a water-soluble adhesive is possible in addition to being soluble in water or having a considerable adhesive force without being toxic in an aqueous emulsion state.

Polyvinyl alcohol is preferred to be used as a water-soluble adhesive when attaching aluminum and paper in a sheet form for ease of recycling of paper cups. To this end, PVA (polyvinyl alcohol) components were examined. The following paper, which investigated the oral toxicity of PVA used as a coating agent for pharmaceuticals and foods, showed little toxicity. “Review of the oral toxicity of polyvinyl alcohol (PVA)” Author DeMerlis C.C, Schoneker D.R Journal of Food and Chemical Toxicology 2003, Vol. 3 No. 3 319p∼326p ISSN 0278-6915.

Polyvinyl acetate is used to bond aluminum foil and paper when packaging tobacco, and is also used as a base for chewing gum. Korea's Wukong Co. has been certified by the Korean government for this material.

The polyvinyl acetate MSDS toxicity data are as follows.

Polyvinyl acetate LD50 25000 mg / kg Rat

The water-soluble adhesive may include one or more of the above listed types, or may be used alone or in combination of two or more.

Preferably, as the water-soluble adhesive, one or more of polyvinyl alcohol-based and polyvinyl acetate-based may be included.

Polyvinyl acetate (PVAc) has stronger adhesion than PVA. The rate at which water swells and swells and separates upon contact with water is faster than PVA, and PVAc is faster than EVA.

When using a water-soluble adhesive, if the used container is put in water, it is easily separated when the paper on the outer surface gets wet. Other materials that can be used as a water-soluble adhesive are all water-soluble adhesives, and after drying, it is possible to release the adhesive again upon contact with water under certain conditions.

Water-soluble adhesives can be mixed. You can mix starch (preferably starch) or water-soluble adhesives such as PVAc or PVA or EVA above. For example, the melting point of EVA (ethylene vinyl acetate) is 40 ° C to 110 ° C, but when mixed with other water-soluble adhesives, it can be used if the overall melting point or decomposition point is 100 ° C or higher.

(3) The inner skin of the base may be aluminum, synthetic resin, biodegradable plastic, starch or a mixture thereof, or PLA (poly lactic acid).

(4) Even if the aluminum sheet and the paper sheet are attached with synthetic resin such as PE as in the past, if the paper is exposed on the outer surface, it is possible to recycle the paper. This is possible during chemical treatment or physical manipulation of caustic soda, sodium phosphate, hydrogen peroxide and surfactant.

The present invention solves both health and environmental problems of the paper cup. The present invention has realized an aluminum endothelial container that has been considered impossible by people.

Examples of the method for making the paper cup of the present invention are as follows.

The following sequence may be changed, and changes without departing from the gist of the present invention fall within the scope of the present invention.

1. Prepare a roll of deoiled aluminum foil. It is preferable to use a thin foil of about 6㎛ to reduce the thickness of the aluminum foil, convenience of work, and to ensure that almost no incineration residues remain even in the future incineration treatment. This degree is about the thickness used in cigarette packs or gum paper, so there is no problem of incineration residues even during incineration. As the melting point of aluminum is 660 ℃, it melts in an incinerator of about 1000 ℃ or higher to become a fine ash. It does not remain as a bulky incineration residue during incineration, so no environmental problems occur during incineration. Of course, other thicknesses of aluminum can be used. Aluminum is safe because coffee, cup noodles (cup noodles), and cup rice to which the present invention is applied are neutral with a pH of about 7. When aluminum is exposed to oxygen or water, an aluminum oxide protective film having a thickness of about 10 nm is generated from 4Al + 3O ₂ → 2Al ₂ O ₃ . This completely protects the metal in the range of pH 4 to pH 9 (* Source: “Food Packaging Scholarship”, p.69, Park Moo-hyun and 2 others, Hyungseol Publishing Company)

2. Prepare a roll of paper.

3. Prepare at least one of a synthetic resin, a synthetic resin containing a polar adhesive for container molding, and a water-soluble adhesive. Non-polar resins have poor adhesion. PE is a non-polar material, but has some adhesion.

4. When attaching aluminum and paper in roll form, attach the paper surface and aluminum foil, which will be located on the inner side of the container, in plate form with a synthetic resin (including biodegradable resin or biodegradable synthetic resin) or water-soluble adhesive. However, when bonding with a water-soluble adhesive, it is preferable to undergo a heat drying process. Of course, synthetic resins or biodegradable resins containing polar materials can be used.

As shown in FIG. 7, the water-soluble adhesive layer 3 is first applied to the first surface of the paper envelope 4 to form a water-soluble adhesive layer 3, and if necessary, the synthetic resin adhesive layer 2 can be bonded to the aluminum inner shell 1 in a subsequent step. This even prevents the possibility of small leaks of fine pinholes that may be present in the aluminum endothelium. It can be applied to foods packaged in liquid form and distributed for a long time. Coffee cups or cup noodle containers Cup rice containers It is not necessary in everyday containers.

5. When using a cellophane film between the aluminum layer and paper, use a one-sided moisture-proof cellophane film so that the moisture-proof surface is attached to the surface in contact with the aluminum layer, or place a synthetic resin layer between the aluminum layer and the cellophane film.

6. In order to facilitate recycling of resources, it is preferable to apply a synthetic resin containing a water-soluble adhesive or a polar material for adhesion only to the joints of the sides and the base when forming a cup without attaching a synthetic resin film to the entire outer surface of the paper. In this case, it is preferable to cut the side paper and the base paper and then include the adhesive part. The base may be applied to the entire outer surface before cutting. Synthetic resins (including biodegradable synthetic resins) or synthetic resins containing polar substances can be applied to the aluminum part of the lower part of the side paper. A water-soluble adhesive may also be used, but the drying time may be reduced, and the production efficiency may decrease, and when the water is stored for a long time, the joint of the cup may be absorbed and peeled off.

7. The base (bottom) does not use aluminum, and synthetic resins (including biodegradable synthetic resins) can be used on the inner surface like conventional bases. Synthetic resin with a melting point of 100 ° C or higher is more preferable on the outer surface of the base. In general, the synthetic resin containing the polar material for adhesion may be disposed as a whole. The entire base may be used only as a synthetic resin without paper.

8. The synthetic resin used for bonding the cup forming of aluminum and paper uses a melting point of 100 ° C or higher, and contains at least one polar material for adhesion with a melting point or decomposition point of 100 ° C or higher, which is half the electrical dipole bonding force with aluminum foil. It is good to increase the derbaals power. In particular, it is more preferable to use those having a softening point of 100 ° C or higher. For example, PE and PP are non-polar materials and have low adhesive strength, but can contain one or more polar adhesive materials to increase the adhesive strength. It is also possible to use only adhesive polar materials.

Looking at <Example 1>, the PE containing a polar material has a stronger adhesive strength of 10 times or more than the adhesive strength of the non-polar LDPE, thereby enabling adhesion of slippery aluminum and paper. Thus, it was used in the examples of the present invention.

When using PE, it is preferable to use HDPE, MDPE, or LLDPE, which has a higher melting point and softening temperature than LDPE used for the existing paper cup container inner shell, for safety of the cup in a high-temperature 100 ℃ environment.

A hot melt having a melting point of 100 ° C. or higher may be used when forming and adhering the cup. Hot melt is a type of synthetic resin that increases adhesion by physically mixing or chemically bonding a polar material to a synthetic resin. It can also be made of a film, but is generally used by spraying or applying it in a molten state by heating. When hot melt is applied to the adhesive surface, it hardens and adheres in a short time. Of course, an aqueous adhesive can also be used.

9. The synthetic resin for container molding adhesion preferably contains a polar adhesive material, and may be disposed on a part of the aluminum surface, or may be partially or entirely on the outer surface of the paper.

10. Container molding bonding is mainly composed of heating bonding. As the heating method, one or more of direct heating, mold heating, hot air heating, ultrasonic bonding, impulse bonding, high-frequency bonding, and laser bonding may be used. However, as in the case of the hot melt, spraying or coating of a synthetic resin component already heated and melted can be used to join the joint without heating the joint. It is also possible to bond under pressure after applying the adhesive without heating.

11. As for the paper used for the shell, natural pulp can be used as well as recycled paper.

12. For paper cups mainly composed of double containers such as cup noodles or cup bowls, the paper cups made in this application are for paper cups to which aluminum foil is attached.

13. When using a biodegradable synthetic resin containing a polar material for adhesion to the synthetic resin used for cup molding bonding, complete composting (natural decomposition) is also possible during landfilling.

14. Among water-soluble adhesives, PVAc has sufficient adhesion even in the adhesion of slippery aluminum and paper as shown in <Example 1>. Of course, it can be used by mixing with other water-soluble adhesives. EVA also has great adhesion.

In order to fully expose the paper outside the paper cup while using the aluminum endothelial to the base, after cutting the side paper, in the cup forming process, water-soluble adhesive or synthetic resin adhesive (polar material is included) on the side 20 and bottom 30 of the side paper on the side paper Preferably). It is better to apply the coating part to the aluminum part.

In the present invention, the synthetic resin means a broad meaning including not only general synthetic resins, but also biodegradable synthetic resins or biodegradable resins containing PLA, starch or cellulose components. Synthetic resins containing polar materials for adhesion also include biodegradable synthetic resins or biodegradable resins containing PLA components (melting point 150 to 160 ° C), starch components or cellulose components, as well as general synthetic resins. It means that any of the synthetic resins contains an adhesive polar material.

It is preferable to use a water-soluble adhesive used in the present invention or a synthetic resin containing a polar substance having a melting point or a decomposition point of 100 ° C or higher. Vegetable starch does not melt or decompose below 100 ° C, and burns and decomposes at high temperatures, which corresponds to a material having a melting point or a decomposition point of 100 ° C or higher.

To strengthen the adhesion of aluminum foil and paper during cup forming (cylindrical molding of the side sheet and bonding with the base), use a synthetic resin containing a polar material with a melting point or decomposition temperature of 100 ° C or higher and strong adhesion. Water-soluble adhesives can be used.

In one embodiment, the polar material, synthetic resin adhesive can be biodegradable. By using these as biodegradable, it is possible to increase the efficiency of removing the adhesive layer when separating the aluminum inner and paper outer shells and prevent environmental pollution when removing the adhesive layer.

The polar material can form hydrogen bonds with cations of various metals in the aluminum foil, and increase the electrical dipole moment van der Waals force between the materials to strengthen the adhesion. Thus, the adhesion between aluminum and paper can be greatly enhanced. Non-polar synthetic resins have very weak adhesion because only the weak dispersion force among van der Waals forces acts.

The polar adhesive material may be one of the following series.

1.Epoxy resin system

2.Polyamine system

(1) Aliphatic polyamine-Xylene diamine, modified aliphatic polyamine, etc., including diethyltriamine, triethylenetetramine, diethylaminopropylamine, m-xylenediamine, etc.

(2) Aromatic polyamines-phenylenediamines including metaphenylenediamine, aminodiphenylsulfone, etc.

3. Acid Anhydride System-Maleic anhydride, phthalic anhydride, hexahydrophthalic anhydride, etc.

4.Polyamide system

5. Resol resin system 6. Polysulfide system

7.Acrylic

8.Phenol resin system

9.Polyurethane

10.silicone

11.Rubber

12.Polyamideimide system

13.Polyimide system

14.Polybenzimidazole system

15. Polyester

16.Polyvinyl acetate type

17. Polyolefin

18.Nylon

19. Urea resin system

20.Aniline resin system

21. Toluene sulfonic acid amide system

22. Isocyanate alkyd system

23.Cyanoacrylate system

24. Polydiphenyl ether system

25.Polyvinyl acetate type

26. Melamine.

      The water-soluble adhesive or synthetic resin adhesive may be a hot melt adhesive, a conductive adhesive, an instantaneous adhesive, an anaerobic adhesive, or the like.

Of these synthetic resin adhesives, a material suitable for the present invention can be used if it has a melting point or a decomposition point of 100 ° C or higher, more preferably a softening point of 100 ° C or higher, no odor, and sufficient adhesion at the operating temperature.

The polar adhesive material used in the present invention may be used alone or in combination of two or more of the types listed above. The two or more kinds means not only the substances listed above, but also two or more kinds including substances not listed in addition to the substances.

As an example of a material that can be used as a polar material adhesive because the melting point is 100 ° C or higher, the melting point of a hot melt varies depending on the main raw material, the acid anhydride-based phthalic anhydride has a melting point of 131.6 ° C, a boiling point of 285 ° C, and maleic anhydride melting point Thermal deformation occurs at 130 ° C to 130.5 ° C, the boiling point is 138.5 ° C, and acryl-based methyl methacrylate at 118 to 122 ° C. Several polar substances can be mixed and used.

Use a polar material adhesive with a melting point of 100 ° C or higher, alone or in combination, or PE (HDPE, MDPE, LDPE, LLDPE, etc.), PP, polyester, nylon, PS, PET, biodegradable synthetic resins, PLA (poly lactic acid) ), And biodegradable resins.

The polar material-containing synthetic resin adhesive may include polyolefins such as polyethylene (eg, one or more of high density polyethylene, medium density polyethylene, low density polyethylene, and ultra low density polyethylene) and polypropylene; Polyesters such as polyethylene terephthalate; Nylon series; It may contain one or more synthetic resins of the polystyrene-based.

The adhesive layer may be formed of an adhesive layer formed of a water-soluble adhesive alone, an adhesive layer of a synthetic resin component alone, an adhesive layer formed of a polar substance-containing adhesive alone, or two or more layers.

Referring to FIG. 5 as an example, in the aluminum inner paper cup, the water-soluble adhesive layer 3 formed of a water-soluble adhesive between the aluminum inner skin 1 and the paper outer skin 4 is partially or entirely polarized on the outer surface of the paper outer skin 4. It may include a material-containing synthetic resin-containing adhesive layer (5).

The bottom portion together with the side portion forms the outer shape of the paper cup. The bottom portion may be N-shaped or amorphous, such as circular, oval, or square, but is not limited thereto.

In one embodiment, the side portion can be made of an aluminum inner skin and a paper outer skin.

In one embodiment, the bottom portion and the side portion may be integrally formed without an adhesive layer.

In one embodiment, the bottom portion may be made of an aluminum inner skin and a paper outer skin. The aluminum inner skin and the paper outer skin can be adhered by an adhesive layer. The aluminum inner shell, the paper outer shell, and the adhesive layer are the same as described in the side section, respectively.

In another embodiment, the bottom portion is a coating layer formed of a bio-degradable synthetic resin such as polyolefin-based synthetic resin such as polyethylene, polypropylene, synthetic resin such as nylon, starch mixed synthetic resin, polylactic acid, biopol, etc. It can be formed.

In another embodiment, the bottom portion and the side portion may be bonded to the adhesive layer by the above-described water-soluble adhesive, the above-described synthetic resin-containing adhesive.

     When a water-soluble adhesive is used as the adhesive, the solid content of the adhesive is preferably 1% by weight or more of the solid content when bonding aluminum and paper on a roll sheet in a fabric manufacturing process. It is preferable that the solid content of the adhesive is 5% by weight or more during adhesion during container molding. They may be lower, but the drying time will be longer, resulting in lower productivity. In the above range, when the water content is lowered, the drying time becomes faster and productivity may increase.

As a method of simply checking the adhesive strength of the adhesive, in the peeling test after bonding, there are three types: 1. Falling of the adhesive surface (interface peeling) 2. Destructive peeling of the adhesive 3. Breaking peeling of the adhesive (no adhesive or adhesive surface peeling) Can be evaluated as The strongest of these is the third one above. It is preferable that the cup-forming adhesive has an adhesive force satisfying this third.

< Example 1 > Adhesive strength test (aluminum and paper adhesion)

Adhesion between aluminum and paper was tested for various adhesives. After adhesion, a force was applied vertically to measure the force per cm of the adhesive width at which the separation first occurred, and the strength was measured as the adhesive strength, and shown in Table 1 below.

division Kinds Adhesion strength (g / cm) Observation result Adhesion Water-soluble adhesive Rice starch 50-75 Interfacial peeling weakness Glutinous rice starch 50 Interfacial peeling weakness PVA Over 100 Partial destruction of adherend
(Paper destruction and interfacial peeling) Good PVAc 200 to 400 or more Deposition of adherend (paper) good Pvc adhesive LDPE 100 1.Adhesive (paper)
Partial destruction
2.Aluminum
Attached interface peeling weakness Synthetic resin +

Adhesives containing polar adhesives LLDPE + polar adhesive material 1,000 or more Destroyed paper Very good HDPE + polar adhesive material 1,000 or more Destroyed paper Very good PP + polar adhesive material 1,000 or more Destroyed paper Very good

※ Water-soluble adhesives can be mixed with each other.

< Example 2 > Table 2 below shows the peeling time at 20 ° C. in cold water after adhesive bonding of aluminum and paper.

division Kinds Peeling time Remark receptivity
glue Rice starch  5-10 minutes Glutinous rice starch 15-20 minutes PVA 10-15 minutes PVAc  3-4 hours After separation, the white sediment is weakly attached to paper or aluminum. Synthetic resin
glue PE  3-4 days or more Even after 3-4 days after soaking in water, the PE film must be removed by hand before falling

The adhesives in Examples 3 to 10 below were manufactured by employing some of the configurations of the above-described adhesives.

< Example 3 >

-Bonding paper fabric and aluminum fabric with water-soluble adhesive, using a synthetic resin containing a polar material with a melting point of 100 ℃ or higher at the cup forming joint, and exposing the paper to the entire outer surface of the cup

1. Bond the paper fabric and the aluminum fabric with water-soluble adhesive.

2. Cut the sides and base.

3. A synthetic resin containing a polar material for adhesion is applied to the joints of the sides.

4. Form the cup by heat bonding with the base

< Example 4 >

-Bonding the paper fabric and aluminum fabric with water-soluble adhesive, bonding the cup forming joints with water-soluble adhesive, exposing the paper to the entire outer surface of the cup

1. Bond the paper fabric and the aluminum fabric with water-soluble adhesive.

2. Cut the sides and base.

3. Apply a water-soluble adhesive to the joints of the sides.

4. Form the cup by heat bonding with the base.

< Example 5 >

The contents of [Fig. 2] to [Fig. 4], the paper fabric and the aluminum fabric are adhered with synthetic resin, and the other side of the paper is placed with a synthetic resin containing a polar material for adhesion at a melting point of 100 ° C or higher.

1. Join the aluminum fabric to one side of the paper fabric with synthetic resin (LDPE).

2. On the other side of the paper, a synthetic resin containing a melting point or a softening point of 100 ° C or higher, containing a polar material for adhesion with a melting point or decomposition point of 100 ° C or higher, is placed.

3. Cut the sides and base.

4. Form the cup by heating and bonding the sides and base

< Example 6 >

-Adhesion of paper and aluminum fabrics with synthetic resin, use of synthetic resin containing polar material for the cup forming joints, paper exposure on the entire outer surface of the cup

1. Join the aluminum fabric to one side of the paper fabric with synthetic resin.

2. Cut the sides and base.

3. Apply synthetic resin containing polar materials for adhesion to the joints of the sides.

4. Heat-bond the base to make a cup

< Example 7 >

-Adhesion of paper fabric and aluminum fabric with water-soluble adhesive, use of synthetic resin containing polar substances on the cup forming joints and the bottom surface of the cup

1. Join the aluminum fabric to one side of the paper fabric with a water-soluble adhesive.

2. A synthetic resin containing a polar adhesive material is disposed on the paper surface of the fabric to be used for the base portion of the above-mentioned support group.

3. Cut the sides and base.

4. Apply synthetic resin containing polar materials for adhesion to the joints of the sides.

5. Heat-bond the base to make a cup

< Example 8 >

-Cup manufacturing method using synthetic resin on the inner surface of the base

1. Separate the paper fabric for side paper and base paper.

2. Bond aluminum to one side of paper fabric for side paper with water-soluble adhesive or synthetic resin.

The outer side of the paper is placed in paper.

3. The paper fabric for the base is not attached with aluminum, and synthetic resins such as PE, PP, and NY are attached to one side for the interior. The outer surface of the paper fabric for the base is exposed without the synthetic resin.

4. Cut the sides and base.

5. Apply a synthetic resin containing an adhesive polar material with a melting point of 100 ° C or higher to the side paper molding joint on the side of the cut paper.

6. Apply a synthetic resin with a melting point of 100 ° C or higher to the lower part of the cut side paper. (* It is more preferable to contain an adhesive polar material, but an adhesive synthetic resin containing a polar material may be disposed on the outer surface of the base. In general, it can be applied to the lower part of the side paper, although it is a general synthetic resin.)

7. Shape the cup.

<Example 9>

-Manufacture of cups using synthetic resin throughout the base

1. Attach the aluminum fabric to the paper fabric for side paper.

2. The base is preformed with synthetic resin.

3. After the sides are rounded, a synthetic resin base is inserted and heat-bonded to form a cup.

<Example 10>

A biodegradable synthetic resin containing an adhesive polar material with a melting point of 100 ° C or higher is placed on the outer surface of a paper cup, or used to form an adhesive between aluminum and paper when forming a paper cup.

Various examples have been described above. This example is part of the present invention. The above-described implementation methods can be used in combination, and changes can be made within the spirit of the present application, but all such changes are within the scope of the present application. Hereinafter, the present invention will be described in detail based on the drawings.

1 is a schematic representative cross-sectional view of the aluminum endothelial paper container of the present invention. The inner surface is attached with aluminum foil (1), the outside is paper (4), and the paper and aluminum are attached with an aqueous adhesive (3). A synthetic resin layer (which may contain a polar material or biodegradable resins) may be disposed on the outside of the paper. As the outer synthetic resin layer, a foamed synthetic resin (gas-containing synthetic resin) may be used.

Figure 2 is an aluminum endothelial paper container (silver foil paper container, silver foil paper cup) 850cc prototype photo

FIG. 3 is a prototype photograph of an aluminum endothelial paper container 13oz (≒ 368cc) beverage cup (coffee, etc.)

Figure 4 is an aluminum endothelial paper container 850cc food container and 13oz beverage cup prototype photo

5 is a partial cross-section of an embodiment in which an aqueous adhesive layer 3 is disposed between an aluminum inner shell 1 and a paper jacket 4. The synthetic resin 5 may be attached to the outer surface of the paper. The synthetic resin on the outer surface may be attached in whole or in part.

FIG. 6 is a partial cross-section of an embodiment in which a synthetic resin adhesive layer 2 is disposed between an aluminum inner shell 1 and a paper outer shell 4. The synthetic resin 5 may be attached to the outer surface of the paper. The synthetic resin on the outer surface may be attached in whole or in part.

FIG. 7 is a partial cross-section of an embodiment in which a synthetic resin adhesive layer 2 and an aqueous adhesive layer 3 are disposed between an aluminum inner shell 1 and a paper envelope 4. The synthetic resin 5 may be attached to the outer surface of the paper. The synthetic resin on the outer surface may be attached in whole or in part.

8 is an example in which a synthetic resin adhesive or a water-based adhesive containing a polar material for forming a container is locally disposed on the side portion 20 of the side paper (side portion) 10. When using a non-polar synthetic resin therein, it is preferable that the outer surface to be bonded thereto contains a polar material to improve the bonding strength. The opposite is also true.

9 is a synthetic resin adhesive containing a polar material or a synthetic resin containing a non-polar synthetic resin in the side portion 20 of the side portion (side paper), or an aqueous adhesive is disposed, and the lower portion of the side portion (side paper) 10 (30) An example in which a synthetic resin adhesive containing a polar substance, a non-polar synthetic resin, or a water-soluble adhesive is disposed on an aluminum surface. When arranging the non-polar synthetic resin, it is preferable to arrange a synthetic resin containing a polar substance having a melting point of 100 ° C. or higher on the outer surface of the side portion (side sheet) or the base (bottom sheet, bottom plate). When placing the adhesive on the lower portion 30 of the side paper, it is appropriate to place it on the 30 portion so that the width of the base is slightly wider than the base, and the adhesive is not exposed inside the container. At this time, even if the inside of the base is aluminum, the joint between the side and the base can be doubled in and out, so that the cup can be completely sealed.

At this time, even if the paper is exposed on the outer surface of the base, it is possible to make a strong sealing bond, which is more advantageous for recycling paper resources.

5 to 7, the outer surface of the paper may be exposed, or a synthetic resin may be attached to the outer surface of the paper. The synthetic resin 5 on the outer surface may be attached in whole or in part, and synthetic resins or biodegradable resins containing polar materials may be used. In addition, a foamed synthetic resin containing gas can also be placed on the outer surface of the container. The foamed synthetic resin is a synthetic resin on the outer surface instead of a double cup, and is used to obtain a heat retention effect or a heat transfer prevention effect.

Simple modifications or changes of the present invention can be easily implemented by those skilled in the art, and all such modifications or changes can be considered to be included in the scope of the present invention.

Claims (17)

An aluminum endothelial paper container comprising a bottom portion and a side portion completely surrounding the outer periphery of the bottom portion,
The side portion has an aluminum inner shell and a paper outer shell formed outside the aluminum inner shell,
The outer surface of the paper shell may be the paper is exposed to the outside or synthetic resin is attached to the outside of the paper,
At least one of the bonding of the side portion and the bottom portion, the bonding forming the side portion, and the roll sheet-like bonding between the aluminum inner shell and the paper outer shell is a water-soluble adhesive having a melting point or a decomposition point of 100 ° C or higher, a melting point or a decomposition point of 100 ° C or higher An aluminum endothelial paper container in which a synthetic resin adhesive, a melting point or a decomposition point is 100 ° C or higher, and is bonded by one or more of a synthetic resin adhesive containing a polar substance.
A paper container with aluminum foil on the inner surface,
After cutting the side part (side sheet), in the bottom part of the aluminum surface to be joined to the bottom plate (base, bottom plate) among the side parts, the melting point or the decomposition point is 100 ° C. Adhesive, melting point or decomposition point of synthetic resin adhesive of 100 ℃ or higher, melting point or decomposition point of 100 ℃ or higher and one or more of synthetic resin adhesive containing polar material is applied to the side part (side paper) and the bottom plate (base, An aluminum endothelial paper container, characterized in that the bottom plate) is bonded.
A paper container with aluminum foil on the inner surface,
On one or more parts of the side or bottom of the aluminum surface among the side parts (side sheets) of the container, the melting point or the decomposition point is 100 ° C or higher, more preferably, the softening point is 100 ° C or higher; One or more of a water-soluble adhesive, a synthetic resin adhesive, a synthetic resin adhesive containing a polar material for adhesion, or a biodegradable synthetic resin adhesive containing a polar material for adhesion is the entirety of the side portion or the bottom portion of the container bonding portion. An aluminum endothelial paper container characterized by being applied as a nile part.
A bottom portion and a side portion completely surrounding the outer periphery of the bottom portion,
Only the side portion is provided with an aluminum inner shell and a paper outer shell formed outside the aluminum inner shell,
The outer surface of the paper shell may be the paper is exposed to the outside or synthetic resin is attached to the outside of the paper,
At least one of bonding of the side portion and the bottom portion, bonding for forming the side portion, and roll sheet-like bonding between the aluminum inner skin and the paper outer skin; It is characterized by a water-soluble adhesive having a melting point or decomposition point of 100 ° C or higher, a synthetic resin adhesive having a melting point or decomposition point of 100 ° C or higher, or a synthetic resin-containing adhesive having a melting point or decomposition temperature of 100 ° C or higher and containing a polar substance. Made of aluminum endothelial paper container.
The water-soluble adhesive is polyvinyl alcohol-based, polyvinyl acetate-based, ethylene-vinyl-acetate-based, hydroxypropyl methylcellulose, hydroxypropyl methylcellulose phthalate, luxurious vegetable starch according to any one of claims 1 to 4 , Dextrin, soluble starch, oxidized starch, glue, casein, gum arabic, paste, biodegradable adhesive resin, acrylic emulsion, cellophane containing any one or more of, wherein the aluminum endothelial paper container.
The synthetic resin-containing adhesive according to any one of claims 1 to 4, wherein the polar material-containing adhesive is an epoxy resin-based, polyamine-based, acid anhydride-based, polyamide-based, resol resin-based, polysulfide-based, acrylic-based, or phenolic resin-based adhesive. , Polyurethane, silicone, rubber, polyamideimide, polyimide, polybenzimidazole, polyester, polyvinyl acetate, polyolefin, nylon, urea resin, aniline resin, toluenesulfonic acid amide, isocyanate An aluminum endothelial paper container comprising at least one of alkyd, cyanoacrylate, polydiphenyl ether, polyvinyl acetate, and melamine.
The method of claim 6, wherein the polyamine-based diethyltriamine, triethylenetetramine, diethylaminopropylamine, xylenediamine, modified aliphatic polyamine, phenylenediamine, aminodiphenylsulfone, and at least one kind,
The acid anhydride-based one containing at least one of maleic anhydride, phthalic anhydride, hexahydrophthalic anhydride, aluminum endothelial paper container.
According to any one of claims 1 to 4, The synthetic resin adhesive or the synthetic resin adhesive containing the polar material is a polyolefin-based synthetic resin; Polyester type; Nylon series; An aluminum endothelial paper container comprising one or more synthetic resins of polystyrene.
According to any one of claims 1 to 4, Synthetic resin containing the polar material, HDPE, MDPE, LDPE, LLDPE, PP, polyester, nylon, PS, PET, biodegradable synthetic resins, PLA (poly lactic acid), aluminum endothelial paper container characterized in that it is used in combination with any one or more of biodegradable resins.
The aluminum endothelial paper container according to any one of claims 1 to 4, wherein the water-soluble adhesive, the synthetic resin adhesive, or the synthetic resin adhesive containing the polar substance includes biodegradable resins.
The aluminum endothelial paper container according to any one of claims 1 to 4, wherein the water-soluble adhesive, the synthetic resin adhesive or the synthetic resin adhesive containing the polar substance comprises a hot melt adhesive.
The aluminum endothelial paper container according to claim 1 or 4, wherein the synthetic resin that can be attached to the outer surface of the paper sheath may include a polar adhesive material or biodegradable resins.
According to claim 1 or claim 4, The bottom portion and the side portion of the melting point or decomposition point of the water-soluble adhesive of 100 ℃ or more, the melting point or decomposition point of 100 ℃ or more of the synthetic resin-containing adhesive containing a polar material An aluminum endothelial paper container which is joined by more than one species.
The aluminum endothelial paper container according to any one of claims 1 to 4, wherein the aluminum endothelial paper container comprises an aluminum endothelial paper cup.
A method of manufacturing a paper container in which aluminum foil is located on the inner surface,
Manufacturing a side portion, and including bonding the side portion and the bottom portion,
Producing the side portion includes bonding the aluminum inner surface of the roll sheet state and the paper outer surface with an adhesive, wherein the outer surface of the paper outer surface may be attached with a synthetic resin,
When bonding the aluminum inner skin and the paper outer skin, the adhesive has a melting point or a decomposition point of 100 ° C. or higher, and uses at least one of a water-soluble adhesive, a synthetic resin-containing adhesive, and a polar resin-containing synthetic resin-containing adhesive;
The adhesive used when forming the container by round-molding the side portion or by bonding the side portion and the bottom portion has a melting point or a decomposition point of 100 ° C. or higher, and is one of a water-soluble adhesive and a synthetic resin-containing adhesive containing a polar substance. A method of manufacturing an aluminum endothelial paper container, characterized by using the above.
A method of manufacturing an aluminum endothelial paper container,
The aluminum inner skin and the paper outer skin are adhered with a first adhesive to produce side paper,
A side portion is manufactured by connecting both connecting portions of the side sheets with a second adhesive to connect them,
Manufacturing the bottom,
And manufacturing the aluminum endothelial paper container by adhering the side portion and the bottom portion with a third adhesive,
At least one of the first adhesive, the second adhesive, and the third adhesive has a melting point or a decomposition point of 100 ° C or higher; A method of manufacturing an aluminum endothelial paper container, comprising at least one of a water-soluble adhesive, an adhesive containing a synthetic resin, and an adhesive containing a synthetic resin containing a polar substance.
A method of manufacturing a paper container in which aluminum foil is located on the inner surface,
Step 1 to remove the oil of the aluminum foil;
Step 2, using a water-soluble adhesive or a synthetic resin adhesive, to bond the rolled paper and aluminum in a plate shape to make a fabric with aluminum attached thereto;
Cutting the fabric produced in step 2 and rolling it round, using a water-soluble adhesive or a synthetic resin adhesive, forming a paper cup side sheet of aluminum inner skin;
After cutting the base with the fabric or a separately prepared base or base fabric, forming a paper cup using a water-soluble adhesive or a synthetic resin adhesive between the sides and base;
A method of manufacturing an eco-friendly eco-friendly aluminum endothelial paper cup that is easy to recycle, comprising the steps regardless of the order.

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