Properly designed deep undercuts are possible with GLS overmold TPEs. Spiral flow testing results for GLS products are presented below using injection speeds of 3 in/sec and 5 in/sec. Most GLS styrenic TPEs (Dynaflex and some Versaflex) have fairly high mold shrinkage and cause the overmolding TPE to contract more than the substrate, which can result in warpage or cupping of the substrate part.

To meet the manufacturer’s goals for the mouse grip, a clear TPE overmolding material, GLS Versaflex™, was formulated for improved ergonomics and comfort, strong chemical resistance, and excellent bonding to the ABS substrate. A technical support team at Avient GLS Thermoplastic Elastomers conducted extensive compatibility testing to confirm proper bonding and overmolding onto the rigid substrate. Thermoplastic Elastomers: GLS™ Versaflex™

Most GLS TPE materials replicate the mold surface fairly well. If a matte finish is required, a rougher mold texture should be used (or a GLS product such as GLS Versalloy™ TPV Alloys, which naturally produce a matte surface).

– PolyOne GLS Thermoplastic Elastomers today announced the launch of an overmolding technology based on Versaflex™ VDT thermoplastic elastomer (TPEs), developed for vibration and impact damping applications. Customers familiar with our Versaflex VDT material have asked for an overmolding variation that allows them to leverage the design freedom of two-shot and insert injection molding,” said Charles Page, director, global marketing, PolyOne GLS Thermoplastic Elastomers. Additionally, the PolyOne GLS material is more cost-effective than self-adhesive vibration damping tapes and avoids secondary operations.  

The tub features a custom overmolded GLS Versaflex™ thermoplastic elastomer (TPE) and non-toxic PolyOne OnColor™ colorants. In addition, Karibu chose PolyOne’s non-toxic OnColor™ colorants, which are customizable and compatible with the GLS TPE material.   Karibu selected our TPE and colorants because they are superior to conventional products,” said Michelle Hearn, director of marketing for PolyOne GLS.

Thermoplastic Elastomers: GLS™ Versaflex™ Thermoplastic Elastomers: GLS™ Versollan™

The GLS™ TPE Overmolding Guide is a compilation of more than 25 years of experience in the development, design and processing of overmolding TPEs, based on contributions from a variety of Avient and industry sources. GLS Product Line

For many GLS overmolding grades, the use of a polyethylene (PE) carrier may adversely affect adhesion. It is common practice to use two mold temperature controllers while running GLS materials. The adhesion of GLS soft overmolding TPEs to a substrate may be affected by:

GLS™ TPEs with Antimicrobial Technologies This specialty line of GLS™ thermoplastic elastomers has imbedded antimicrobial additives that inhibit bacterial growth by 99.9% or more (log 3) and resist fungal growth to protect molded plastic parts. KEY CHARACTERISTICS • Protects finished part by inhibiting microbial and fungi growth • Extends useful life of finished TPE parts by controlling deterioration caused by mildew or mold fungus • Increases product durability, preserves surface integrity, and minimizes odors MARKETS & APPLICATIONS Suitable for high-touch surfaces and applications, GLS TPEs with antimicrobial technologies add value in the consumer, packaging and automotive markets.

GLS International, Rilland, Netherlands GLS Corporation, 833 Ridgeview Drive, McHenry, IL 60050 Tel: 815-385-8500 Fax: 815-385-8533 email: info@glscorp.com Web: www.glscorp.com BIOGRAPHICAL NOTE John Simons is currently employed by GLS International Inc. as Business Manager Europe. GLS International Inc. is part of GLS Corporation, a world-wide leader in TPEs that is located in McHenry, USA. After 4 years at Bostik Findley John joined GLS in January 2002.