Wafer holder band for mold injection process
AssigneeEssilor International
InventorsPeiqi Jiang, Arnaud Glacet, Zbigniew Tokarski
Life of this patent
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Abstract
The present disclosure includes systems, devices, and methods for preventing contamination during formation of an optical article. In some implementations, a device for preventing contamination of a mold cavity during injection molding of a function wafer includes a containment band having an annular base that defines a first opening configured to receive a functional wafer. The device also includes one or more sidewalls that project a first direction from and surround at least a portion of the first opening. The one or more sidewalls may be configured such that, during formation of an optical article, a first portion of the functional wafer is in contact with the one or more sidewalls.
Claims14
A containment band for use in making an article, the containment band comprising:
- an annular base that defines a first opening, said annular base including a first surface, a second surface opposite the first surface, a third surface and a fourth surface opposite the third surface, said first surface corresponding to an interior side of the annular base, thus defining the first opening, and said second surface corresponding to an exterior side of the annular base, thus defining a periphery of the base;
- and
- multiple sidewalls that project a first direction from and surround at least a portion of the first opening, each of said sidewalls comprising a first end, a second end, an inner surface facing the first opening, and an outer surface opposite the inner surface, and said multiple sidewalls defining a plurality of second openings;
- and
- wherein, during formation of the article, a first portion of a functional wafer is in contact with the multiple sidewalls and each of the plurality of second openings is configured to enable passage of an injection material to form the article, and
- wherein the first end of each of the multiple sidewalls corresponds or is coupled to the fourth surface of the annular base.
Dependencies are inferred from the claim text.