Plastic portable heat insulation cup

Abstract

An plastic portable heat insulation cup, comprising: a) an external cup made of plastic material by means of an injection molding process, a first lip rim being formed by turning the rim portion of the external cup inside out, an annular groove with the external wall protruding outward being integrally formed at a place 3-13 mm lower than the first lip rim, the distance from the annular groove to the protrusion portion of the cup bottom being marked with h1; and b) an internal cup made of plastic material by means of an injection molding process, the outer diameter of the internal cup depending on the inclination and the inner diameter of the flank of the external cup, a plurality of corrugations being formed in the flank of the internal cup such that a heat insulation space is created between the corrugations and the flank of the external cup, a second lip rim being formed by turning the rim portion of internal cup inside out, the distance from the second lip rim to the external side of the cup bottom being marked with h2 which is identical to h1. Accordingly, the second lip rim fits into the annular groove when the internal cup is placed within the external cup so that a heat insulation cup is created by attaching the external cup and the internal cup to each other.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a plastic portable heat insulation cup, and more particularly to an external and an internal cup that are made of plastic material. The external and internal cups fit into each other to create a heat insulation cup without any processing procedure. Moreover, the external and internal cups can be separately used prior to the attachment of the external and internal cups.[0003]2. Description of the Related Art[0004]Drinking coffee or tea becomes an indispensable part of life to coffee or tea drinkers. At an early stage, people usually drink coffee or tea in restaurants or at home, but the style of our living has changed, and chained coffee shops such as “Starbucks” arise. People change their dining and drinking habits, and take-out coffee is a good example of these changes.[0005]However, most of the portable beverages are made by hot water. Therefore, the hands become scalded when the bever...

AI Technical Summary

Benefits of technology

[0013]It is a primary object of the invention to provide a plastic portable heat insulation cup with an external and an internal cup both of which are made of plastic material by an injection molding process. The external and internal cups can be engaged into each other. This permits not only a convenient processing but also provides a practical assembly without the requirement to complete at the factory. In other words, the external and internal cups can be assembled to be a heat insulation cup just at the stores, thereby permitting a convenient use. Moreover, the external and internal cups can be separately used prior to the assembly. Accordingly, the effect of “one object having three purposes” is ensured.

[0014]It is another object of the invention to provide a plastic portable heat insulation cup with an external and an internal cup both of which are made of plastic material by an injection molding process. Thus, it doesn't suffer from the above-mentioned problem of beverage leakage at the joint.

[0015]It is a further object of the invention to provide a plastic portable heat insulation cup with an external and an internal cup between which a heat insulation space is created. Moreover, the assembled heat insulation cup provides an excellent strength.

Problems solved by technology

Therefore, the hands become scalded when the beverage cup is held.

However, the double-layered insulated drinking cups are made of paper by a complicated manufacturing process.

Therefore, the coffee will easily leak therefrom.

In addition, a water-proof layer has to be applied to the inner wall of the paper drinking cup for protecting the whole paper drinking cup from being soaked and softened, thereby leading to deformation of the paper drinking cup.

However, this water-proof layer can withstand the hot beverage only for a short period.

The paper drinking cup will still suffers from the soaking action after a longer use.

Thus, the paper drinking cup has inevitable drawbacks in use.

This leads to unnecessary waste.

However, they still suffer from a few problems and therefore, require further improvements.

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