US-20260125177-A1 - HEALTHY AND ECO-FRIENDLY PAPER CONTAINER INCLUDING ALUMINUM LINER AND METHOD FOR PRODUCING SAME

US20260125177A1US 20260125177 A1US20260125177 A1US 20260125177A1US-20260125177-A1

Abstract

A paper cup having an aluminum lining layer, including a side part and a bottom part, wherein the side part includes an inner aluminum thin layer and a paper material layer and the bottom part includes an inner aluminum thin layer and a paper material layer. Adhesives are placed partially or in whole to joints between the side part and the bottom part including a first joint part between the inner aluminum thin layer of the side part and the inner aluminum thin layer of the bottom part, and a second joint part between the inner aluminum thin layer of the side part and an outer part of the bottom part, and a third joint part between the inner aluminum thin layer of the side part and the beneath part of the surrounding supporter of the bottom part, to join the side part and the bottom part.

Inventors

Byung Yun Lim
Yang Gyu Lim
Soo Hyun Lim

Assignees

Byung Yun Lim
Yang Gyu Lim
Soo Hyun Lim

Dates

Publication Date: 20260507
Application Date: 20251229
Priority Date: 20181109

Claims (5)

1 . A paper cup having an aluminum lining layer, the paper cup comprising: a side part and a bottom part, wherein the side part includes an inner aluminum thin layer and a paper material layer and the bottom part includes an inner aluminum thin layer and a paper material layer; wherein adhesives are placed partially or in whole to joints between the side part and the bottom part comprising a first joint part between the inner aluminum thin layer of the side part and the inner aluminum thin layer of the bottom part, and a second joint part between the inner aluminum thin layer of the side part and an outer part of the bottom part, and a third joint part between the inner aluminum thin layer of the side part and the beneath part of the surrounding supporter of the bottom part, to join the side part and the bottom part; wherein the paper cup is a health-safe and eco-friendly reusable aluminum lining paper cup.
2 . A paper cup having an aluminum lining layer, the paper cup comprising: a side part and a bottom part, wherein the side part includes an inner aluminum thin layer and a paper material layer and the bottom part includes an inner aluminum thin layer and a paper material layer; wherein adhesives are placed partially or in whole to the third joint part between the inner aluminum thin layer of the side part and the beneath portion of the surrounding supporter of the bottom part, to seal folding line waterproof; wherein the paper cup is a health-safe and eco-friendly reusable aluminum lining paper cup.
3 . A paper cup having an aluminum lining layer, the paper cup comprising: a side part and a bottom part, wherein the side part includes an inner aluminum thin layer and a paper material layer and the bottom part includes a synthetic resin layer and a paper material layer; wherein adhesives are placed partially or in whole to joints between the side part and the bottom part comprising a first joint part between the inner aluminum thin layer of the side part and the inner lining layer of the bottom part, and a second joint part between the inner aluminum thin layer of the side part and an outer part of the bottom part, and a third joint part between the inner aluminum thin layer of the side part and the beneath part of the surrounding supporter of the bottom part, to join the side part and the bottom part; wherein the paper cup is a health-safe and eco-friendly reusable aluminum lining paper cup.
4 . The paper cup of claim 1 , wherein the adhesives are applied to a lower portion of the side part with a greater width than a height of the bottom part.
5 . The paper cup of claim 2 , wherein the adhesives is partially or entirely applied to a lower portion of the side part, including the folding line which is folded beneath the surrounding supporter of the bottom part.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is CIP application of U.S. Application Ser. No. 17/292,016, having a filing date May 7, 2021, which claims priority to PCT Application No. PCT/KR2019/015183, having a filing date of Nov. 8, 2019, which claims priority to KR 10-2019-0142663, having a filing date of Nov. 8, 2019, KR 10-2018-0138029, having a filing date of Nov. 9, 2018, and KR 10-2019-0115594, having a filing date of Sep. 19, 2019, the entire contents all of which are hereby incorporated by reference. FIELD OF TECHNOLOGY This following is related to the aluminum lining paper cups and paper cartons. This is to bond aluminum foil to the inner surface of a paper container to protect human health from endocrine disrupters and carcinogens leaching from synthetic resins. These containers facilitate the recycling and the re-use of paper. This is applied to disposable food containers, including disposable cups for coffee or beverage, disposable containers for instant noodles, food packing containers, paper cups, paper cartons (including for milk, beverages, or liquor), and food packed in the containers above. As used herein, the term “paper cup” refers to all paper containers except paper cartons, BACKGROUND There have been no paper containers, which can be re-used and recyclable, and are safe for human health up to now. The existing paper containers are harmful to human health and the environment. As synthetic resins, including polyethylene (PE), Polypropylene (PP), or nylon (NY), are used to line the inner surface of existing paper containers, the hot food contained in those containers can induce the release of carcinogens and endocrine disrupters (environmental hormones). Furthermore, it is difficult to reuse or recycle the resources as synthetic resins adhere to the paper. For recycling, the paper needs to be easily separated from those synthetic resins. However, there is no such product on the market. The joints between aluminum surfaces could not be sealed in aluminum lining containers, and the adhesion power between aluminum and synthetic resins including PE, PP, and PS (polystyrene) is very weak. Accordingly, it has been impossible to make aluminum lining containers. PE is slightly adhesive, but it is not sufficient for shaping & bonding it. Biodegradable plastics, which are known to be eco-friendly, are produced by mixing biodegradable substances, including starch, with synthetic resins. While starch is decomposed at land-fill, the plastic elements are not decomposed and escape into the ecosystem as microplastics (hydrosphere, animal, vegetable, and soil system). Thus, biodegradable plastics are harmful to nature and organisms. Those plastics are neither health-friendly nor eco-friendly. Moreover, even paper cups made with PLA (Poly Lactic Acid) using corn starch, which is conceived to be eco-friendly, contain about 12 kinds of chemicals, so they are also harmful to health. Chemicals are leached from PLA cups by themselves. While the corn starch is decomposed, the chemicals are decomposed into micro-substances, which can flow into ecosystems. So, they are harmful to the environment and health. Health and environmental issues related to disposable food containers (paper cups and cartons) are chronic challenges which humans could not solve for a long time. SUMMARY For aluminum lined paper cup waterproofing of the joints between the side part and bottom part, adhesives are placed partially or in whole to joints between the side part and the bottom part comprising a first joint part between the inner aluminum thin layer of the side part and the inner aluminum thin layer of the bottom part, and a second joint part between the inner aluminum thin layer of the side part and an outer part of the bottom part, and a third joint part is formed at a folding line of the side part 30 shown in FIG. 9. Accordingly, in the aluminum lined paper cup of this invention, the side part and the bottom part are bonded at three joints as shown in FIG. 12. The paper cup is a health-safe and eco-friendly reusable aluminum lining paper cup. In addition a third joint part is formed at a folding line 300 in FIG. 12. This folding line is a portion where the lower portion 30 of the side part shown in FIG. 9 is folded beneath the surrounding supporter 50 of the bottom part shown in FIG. 14. In order to place adhesives to joints, the adhesive is partially or entirely placed to the lower portion 30 of the side part shown in FIG. 9, the adhesive is partially or entirely applied to the side part 30 including folding line, and above part, and below part of the folding line. Accordingly adhesive is placed the first, second, and third joint part. Because of the first, second, and third bonding portions, make complete waterproofing and strong structure. In addition, the present invention can be made by side part inner aluminum lining, and bottom inner lining layer which is made of synthetic resin or an eco-friendly material su