Runnerless LSR molding.What hot runners are to thermoplastics, cold runners are to thermosets thermosets, materials that can not be softened on heating. In thermosetting polymers, the polymer chains are joined (or cross-linked) by intermolecular bonding. Thermosets are usually supplied as partially polymerized or as monomer-polymer mixtures. like liquid silicone rubber (LSR 1. (networking) LSR - Label Switching Router. 2. (operating system) LSR - Local Shared Resources. ). Two cold-runner systems for LSR were introduced at this year's NPE show in Chicago. ALBA Enterprises Inc., Rancho Cucamonga, Calif., showed the CRS cold-runner system for thermoset A polymer-based liquid or powder that becomes solid when heated, placed under pressure, treated with a chemical or via radiation. The curing process creates a chemical bond that, unlike a thermoplastic, prevents the material from being remelted. See thermoplastic. LSR and EPDM EPDM Ethylene-Propylene-Diene-Monomer EPDM Enterprise Product Data Management EPDM Ethylene Propylene Dimonomer (industrial/commercial piping/plumbing components) EPDM Engineering Product Data Management elastomers. The standard system features the Quattro pneumatic shutoff nozzles and chokes, a valve-gate system that imparts minimum mechanical shear and with-stands high curing temperatures without crosslinking resin in the gate area. Tel: (909) 941-0600 * PT Direct: 487LH D-M-E Co., Madison Heights, Mich., offers a standardized cold-runner system for LSR or other thermoset rubbers. Its KKS system has pneumatic needle shutoff and restrictors that minimize leftover sprue volume. A standard system can have two to 16 drops with seven nozzle styles. Tel: (248) 544-5718 * PT Direct: 257FB [ILLUSTRATION OMITTED] |
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