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Rubber molding course planned.

"Molding of rubber and design of rubber molds," will be held at University Outreach, University of Wisconsin - Milwaukee, WI, November 8-10.

This seminar is an introductory course on rubber molding. The objective will be to provide an integrated perspective of the molding of rubber.

Instructors will first describe the flow behavior of thermoplastic and crosslinking rubber materials, and then discuss the behavior of these materials in molding processes.

Because of the wide range of viscosity of these materials, a variety of methods and equipment is said to be needed to mold them successfully. Applicable molding methods will be reviewed, with emphasis on the newer methods.

Current principles and techniques in the design of molds and molded parts design will be covered. Materials processes and design factors will then be interrelated to provide an integrated perspective of rubber molding.

Instructors will principally cover the design and molding of mechanical rubber goods, with only limited reference to the molding of fires.

This seminar is said to be of benefit to materials and process engineers, rubber mold designers, quality control personnel and managers responsible for these functions. Attendees are encouraged to bring drawings or parts giving problems in production for discussion by the staff.

Course instructors will include John G. Sommer, Elastech; Richard P. Steiner, Quadra; Terry Chapin, Delphi Automotive Systems; Clyde G. Belongia; and Van T. Walworth, Wynn's Precision.

Rubber materials will be presented, including a description, and information on shrinkage, types, adhesion and flow behavior.

Molding methods discussed will include compression, blow, transfer, casting, injection and RIM. Mold fouling and cleaning will also be discussed.

Mold design will be explored, including the design process and information gathering; parting line considerations; overflow considerations; part feeding (sprues, ring feed, pin feed, tab feed and submarine gate); cavity spacing; mold construction (mold plates, core pin/inserts, leader pins/bushings, materials selection, durability and spring assists); compression molds; transfer molds; injection molds; injection-transfer; and miscellaneous topics such as CAD, in-mold design and cold runner blocks.

Instructors will present designing of parts for manufacturability, including discussions on rubber part tolerancing, mold debug - how to solve molding problems through part redesign, mold redesign, process modification and material changes, and troubleshooting the rubber molding process.

The subject of versatile mold design for optimizing development of rubber products will be presented, including discussions on prototype considerations, initial molding methods, use of CAD in design, combination molds, progressive molds, nesting and special features.

Registration for this course costs $1,090, and includes notes, program materials, break refreshments and lunches. Participants completing the course will receive 1.8 Continuing Education Units. Further information is available from Murali Vedula (414) 227-3121.
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Publication:Rubber World
Date:Oct 1, 2000
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