Method for forming a hollow bottom of acrylic cups
OwnerCheng-Hsu Wuinventor
Life of this patent
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Abstract
A method for forming a hollow bottom of an acrylic cup by forming a cup body by injecting a molding with a liquid transparent or semi-transparent acrylic material into a mold to form a mushroom shaped cavity. The cavity in the bottom of the cup body is filled with a gas, permitting the whole cup to appear to have a three dimensional (3D) visual effect. The cavity of the bottom of the cup can be filled with a non-colored or colored liquid to permit the whole cup to contain a deflected visual effect of a plurality of colored layers.
Claims5
A method for forming a hollow bottom of an acrylic cup comprising the steps of:
- a. forming a cup body by injecting a liquid transparent or semi-transparent acrylic material into a mold;
- b. cooling said cup body to permit an outer surface of said cup body to harden;
- c. removing said cup body from said mold and excising unwanted hardened acrylic material from said cup body;
- d. injecting gas through a needle inserted through a central portion of a bottom region of the cup body whereby gas injected into an interior volume of said bottom region forms a cavity region having a slender hole;
- and,
- e. inserting said bottom region of said cup body in water to allow said interior volume of said bottom region to cool and harden.
A method for forming a hollow bottom of an acrylic cup comprising the steps of:
- a. forming a cup body by injecting a liquid transparent or semi-transparent acrylic material into a mold;
- b. cooling said cup body to permit an outer surface of said cup body to harden;
- c. removing said cup body from said mold and excising unwanted hardened acrylic material from said cup body;
- d. injecting gas through a needle inserted through a central portion of a bottom region of the cup body whereby gas is injected into an interior volume of said bottom region forms a cavity region having a slender hole;
- e. inserting said bottom region of said cup body in water to allow said interior volume of said bottom region to cool and harden;
- f. boring a hole into a central portion of a lower surface of said bottom region to allow said cavity region to communicate with an exterior of said bottom region;
- g. injecting a liquid into said cavity region through a boring hole;
- h. closing said boring hole in said bottom region by fixing an acrylic stud on an open mouth of said boring hole to prevent leakage from said cavity region;
- and
- i. color painting an annular edge of a lower surface of said bottom region for providing a plurality of colored layers to intercross with other colors.
Dependencies are inferred from the claim text.