Essilor International

David J Rys

Gary S Clark

Tareq Haque

Nattapop Napkun

Timothy Holton

A method for creating optical articles includes moving first and second mold portions relative to one another. This disclosure includes injection molds for reducing cycle times and related methods. Some molds include first and second mold portions movable relative to one another from open to closed positions in which each recess of the first mold portion cooperates with a respective recess of the second mold portion to define a chamber. Each chambers includes a first cooling body coupled to the first mold portion, a second cooling body coupled to the second mold portion, and first and second inserts removably coupled, respectively, to the first and second cooling bodies. The inserts cooperate to define a mold cavity within the chamber configured to receive a thermoplastic material. Each of the cooling bodies has an inlet, an outlet, and a fluid cavity in fluid communication with the inlet and the outlet.

Molds having cooling behind insert technology and related methods

This disclosure includes injection molds for reducing cycle times and related methods. Some molds include first and second mold portions movable relative to one another from an open position to a closed position in which each of one or more recesses of the first mold portion cooperates with a respective one of one or more recesses of the second mold portion to define a chamber. Each of the chamber(s) includes a first cooling body coupled to the first mold portion, a second cooling body coupled to the second mold portion, and first and second inserts removably coupled, respectively, to the first and second cooling bodies such that the inserts cooperate to define a mold cavity within the chamber that is configured to receive a thermoplastic material. Each of the cooling bodies has an inlet, an outlet, and a fluid cavity in fluid communication with the inlet and the outlet.

Disclosed are injection molds, injected molded articles, and methods for using the same. The injected molds include a mold cavity and an injection molding conduit having a first end, a second end defining an outlet in fluid communication with the mold cavity, a first interior transverse dimension that is perpendicular to a longitudinal axis of the injection molding conduit, a second interior transverse dimension that is perpendicular to the longitudinal axis and to the first interior transverse dimension, and at the second end, the second interior transverse dimension is at least three times larger than the first interior transverse dimension, and the second interior transverse dimension of the injection molding conduit is substantially aligned with a thickness of a portion of the mold cavity that is adjacent to the outlet of the injection molding conduit.

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Dallas, TX, United States of America

David J Rys