Cup Assembly
A cup assembly includes two sleeves, a bottom element, a ring and bosses. The sleeves are made of paper while the ring and bosses are made of a plastic material. The first sleeve is made with a lower edge and an upper edge. The bottom element is attached to the lower edge of the first sleeve. The ring is formed on the upper edge of the first sleeve. The bosses are formed on the first sleeve against the ring. The second sleeve is made of paper with a lower edge and an upper edge. The lower edge of the second sleeve is located against the bosses as the second sleeve is provided around the first sleeve. Thus, an adequate insulating space is defined between the first and second sleeves.
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1. Field of Invention
The present invention relates to a paper cup and, more particularly, to a cup assembly including a paper cup located in a paper sleeve, with an insulating space defined between the paper cup and the paper sleeve.
2. Related Prior Art
Many drinks such as coffee, juice and tea are contained in disposable containers and sold. In consideration of convenience and cost, many drinks are contained in paper cups. Paper cups are however poor in insulating and actually not good for containing hot drinks. That is, heat is easily transferred to a user's hand from a hot drink via a paper cup. Thus, a user feels hot in his or her hand and might get burnt in the worst scenario. Moreover, heat is easily transferred to the environment from a hot drink via a paper cup. Thus, the drink gets cold easily. On the other hand, heat is easily transferred to a cold drink from the environment through a paper cup. Thus, the cold drink gets hot easily. As discussed above, the drink, hot or cold, loses its favor soon after it is contained in the paper cup. Moreover, paper cups are weak generally and could be deformed easily. In that case, a hot or cold drink could be spilt or leaked easily. A spilt hot drink could burn a user in the hand.
To overcome the foregoing problems, there has been devised at least one cup assembly including a paper cup located in a paper sleeve, with an insulating space defined between the paper cup and the paper sleeve. The paper cup includes a tubular body attached to a bottom element by adhesion. The paper sleeve includes an internally retroflex lower edge. Thus, transfer of heat is not easy because of the insulating space. Moreover, the paper cup is reinforced by the paper sleeve. The use of the conventional cup assembly is however not without any problem. An upper edge of the paper sleeve is in contact with an upper edge of the paper cup. In fact, an upper portion of the paper sleeve is located very close to an upper portion of the paper cup so that the insulating space is thin near the upper portion of the paper sleeve. Hence, the insulating effect of the insulating space is poor near the upper portion of the paper sleeve. However, the user tends to hold the upper portion of the paper sleeve while drinking the hot drink from the cup assembly and feels hot or might get burnt in the worst scenario. Moreover, heat is transferred to the environment from the hot drink or transferred to the cold drink from the environment at a considerable rate.
A paper cup includes an upper edge that is rolled, pressed and then coated with a plastic layer. Thus, the upper edge of the paper cup is made with a multi-layered configuration for providing an adequate rigidity. The processing of the upper edge of the paper cup is however complicated and therefore expensive.
The present invention is therefore intended to obviate or at least alleviate the problems encountered in prior art.
SUMMARY OF INVENTIONIt is the primary objective of the present invention to provide an inexpensive, insulating cup assembly.
To achieve the foregoing objective, the cup assembly includes two sleeves, a bottom element, a ring and bosses. The sleeves are made of paper while the ring and bosses are made of a plastic material. The first sleeve is made with a lower edge and an upper edge. The bottom element is attached to the lower edge of the first sleeve. The ring is formed on the upper edge of the first sleeve. The bosses are formed on the first sleeve against the ring. The second sleeve is made of paper with a lower edge and an upper edge. The lower edge of the second sleeve is located against the bosses as the second sleeve is provided around the first sleeve. Thus, an adequate insulating space is defined between the first and second sleeves.
In an aspect, the first sleeve is made of PE-coated paper.
In another aspect, the mouthpiece and the bosses are provided on the upper edge of the first sleeve by injection molding.
In another aspect, the mouthpiece and the bosses are made of a conventional plastic material, a biodegradable plastic material or a bio-plastic material.
In another aspect, the bottom element is made of paper. The lower edge of the first sleeve is an internally retroflex edge engaged with an edge of the bottom element.
In an alternative aspect, the bottom element is made of a plastic material. The bottom element is made of a conventional plastic material, a biodegradable plastic material or a bio-plastic material. The bottom element includes two annular grooves for receiving the first and second sleeves so that the insulating space is adequate and constant from top to bottom.
In another aspect, the cup assembly further includes a ring made of plastic between the first and second sleeves near the lower edges so that the insulating space is adequate and constant from top to bottom.
In another aspect, the lower edge of the second sleeve is an internally retroflex edge in contact with the first sleeve so that the insulating space is adequate and constant from top to bottom.
In another aspect, the cup assembly further includes an annular lip extending from the mouthpiece so that an annular gap is defined between the annular lip and the bosses for receiving the upper edge of the second sleeve.
In another aspect, the mouthpiece, the bosses and the annular lip are provided on the upper edge of the first sleeve via injection molding.
In another aspect, the mouthpiece, the bosses and the annular lip are made of a conventional plastic material, a biodegradable plastic material or a bio-plastic material.
In another aspect, the cup assembly further includes a thermal foaming layer provided between the first and second sleeves.
Other objectives, advantages and features of the present invention will be apparent from the following description referring to the attached drawings.
The present invention will be described via detailed illustration of six embodiments referring to the drawings wherein:
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The paper sleeve 10 may be made of PE-coated paper. The paper sleeve 10 includes a paper sleeve 10 and a paper bottom element 18. The paper sleeve 10 is formed with a lower edge 11 and an upper edge 12. The lower edge 11 of the paper sleeve 10 is an internally retroflex edge engaged with a bent edge of the paper bottom element 18, thus securing the paper sleeve 10 to the paper bottom element 18.
A plastic mouthpiece 13 is provided on the upper edge 12 of the paper sleeve 10. The plastic mouthpiece 13 is directly provided on the upper edge 12 of the paper sleeve 10 without having to roll the upper edge 12 of the paper sleeve 10 beforehand. Several plastic bosses 14 are formed on the paper sleeve 10 near the upper edge 12. The plastic mouthpiece 13 and the plastic bosses 14 may be made of a conventional plastic material, a biodegradable plastic material or a bio-plastic material. The plastic mouthpiece 13 and the plastic bosses 14 are provided on the paper sleeve 10 by plastic injection molding, hot pressing, high-frequency waves or ultrasonic waves. The plastic mouthpiece 13 and the plastic bosses 14 are preferably made one.
The paper sleeve 2 is made with a lower edge 23 and an upper edge 25. The paper sleeve 2 is provided around the paper sleeve 10, with an insulating space 21 defined between the paper sleeve 2 and the paper sleeve 10. An upper portion of an internal side of the paper sleeve 2 is in contact with the plastic bosses 14. Thus, the thickness of the plastic bosses 14 becomes the thickness of the upper portion of the insulating space 21. Therefore, the thickness of the insulating space 21 is adequate near the upper edge 12 of the paper sleeve 10 and the upper edge 25 of the paper sleeve 2. The insulating effect of the insulating space 21 is good. Moreover, the rigidity of the paper assembly is good.
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As discussed above, the cup assembly exhibits several advantages. At first, the cup assembly provides a good insulating effect since the thickness of at least the upper portion of the insulating space 21 is adequate. Secondly, the cup assembly is inexpensive because the plastic mouthpiece 13 is provided on the upper edge 12 of the paper sleeve 10 by injection molding, hot pressing, high frequency waves or ultrasonic waves.
The present invention has been described via the detailed illustration of the embodiments. Those skilled in the art can derive variations from the embodiments without departing from the scope of the present invention. Therefore, the embodiments shall not limit the scope of the present invention defined in the claims.
Claims
1. A cup assembly including:
- a first sleeve 10 made of paper with a lower edge 11 and an upper edge 12;
- a bottom element 18, 19 attached to the lower edge 11 of the first sleeve 10;
- a mouthpiece 13 made of a plastic material and formed on the upper edge 12 of the first sleeve 10;
- bosses 14 made of a plastic material and formed on the first sleeve 10 against the mouthpiece 13; and
- a second sleeve 2 made of paper with a lower edge 23 and an upper edge 25 located against the bosses 14 as the second sleeve 2 is provided around the first sleeve 10, thus defining an adequate insulating space 21 between the first and second sleeves 10, 2.
2. The cup assembly in accordance with claim 1, wherein the first sleeve 10 is made of PE-coated paper.
3. The cup assembly in accordance with claim 1, wherein the mouthpiece 13 and the bosses 14 are provided on the upper edge 12 of the first sleeve 10 by injection molding.
4. The cup assembly in accordance with claim 1, wherein the mouthpiece 13 and the bosses 14 are made of a plastic material selected from the group consisting of a conventional plastic material, a biodegradable plastic material and a bio-plastic material.
5. The cup assembly in accordance with claim 1, wherein the bottom element 18 is made of paper.
6. The cup assembly in accordance with claim 5, wherein the lower edge 11 of the first sleeve 10 is an internally retroflex edge engaged with the bottom element 18.
7. The cup assembly in accordance with claim 1, wherein the bottom element 19 is made of a plastic material.
8. The cup assembly in accordance with claim 7, wherein the bottom element 19 is made of a plastic material selected from the group consisting of a conventional plastic material, a biodegradable plastic material and a bio-plastic material.
9. The cup assembly in accordance with claim 7, wherein the bottom element 19 includes two annular grooves 15 for receiving the first and second sleeves 10, 2 so that the insulating space 21 is adequate and constant from top to bottom.
10. The cup assembly in accordance with claim 1, further including a ring 22 made of plastic between the first and second sleeves 10, 2 near the lower edges 11, 23 so that the insulating space 21 is adequate and constant from top to bottom.
11. The cup assembly in accordance with claim 1, wherein the lower edge 23 of the second sleeve 2 is an internally retroflex edge in contact with the first sleeve 10 so that the insulating space 21 is adequate and constant from top to bottom.
12. The cup assembly in accordance with claim 1, further including an annular lip 16 extending from the mouthpiece 13 so that an annular gap 17 is defined between the annular lip 16 and the bosses 14 for receiving the upper edge 25 of the second sleeve 2.
13. The cup assembly in accordance with claim 12, wherein the mouthpiece 13, the bosses 14 and the annular lip 16 are provided on the upper edge 12 of the first sleeve 10 via injection molding.
14. The cup assembly in accordance with claim 12, wherein the mouthpiece 13, the bosses 14 and the annular lip 16 are made of a plastic material selected from the group consisting of a conventional plastic material, a biodegradable plastic material and a bio-plastic material.
15. The cup assembly in accordance with claim 1, further including a thermal foaming layer 24 provided between the first and second sleeves 10, 2.
Type: Application
Filed: Sep 23, 2011
Publication Date: May 24, 2012
Applicant: POWER SOURCE AND ASSOCIATES CORP. (Taipei City)
Inventor: Sheng-Hung Lin (Taipei)
Application Number: 13/242,551