A leading North American medical contact manufacturer faced a challenge when molding the gasket for a contact lens container.  The manufacturer produces 7.5 million cases per year, and used liquid injection molded (LIM) silicone to mold this component. However, the silicone was sticking to the mold and inner workings of the molding machine.

A leading North American medical contact manufacturer faced a challenge when molding the gasket for a contact lens container.  The manufacturer produces 7.5 million cases per year, and used liquid injection molded (LIM) silicone to mold this component. However, the silicone was sticking to the mold and inner workings of the molding machine.

A leading North American medical contact manufacturer faced a challenge when molding the gasket for a contact lens container.  The manufacturer produces 7.5 million cases per year, and used liquid injection molded (LIM) silicone to mold this component. However, the silicone was sticking to the mold and inner workings of the molding machine.

Worked with the mold builder on how to build the prototype mold to produce prototypes that Rada could use with focus groups to get true consumer feedback.  Worked with the mold builder and molder to ensure that design for manufacturing was done. Recommended a finish that would have a higher quality feel, and molding texture for optimal grip, finish, mold release and mold repair capabilities.  

Certificate Number: 255 ISO2P Date First Registered: 03/04/2023 Issued on: 11/04/2023 Valid until: 10/04/2026 Awarded to AVIENT PAKISTAN (PVT) LTD 1A/1, Sector#20, Korangi Industrial Area, Sector 20 Karachi, Pakistan In recognition of the Organization´s Food Safety Management System which complies with : ISO 22000:2018 Food Category : I For the scope of activities described below: Manufacturing & Processing of Polymer Resins & Master batch F-3/22/ A 100 Issue date : 06/2022 Version:03 It is mandatory to carry out the surveillance audit on its time.

Versaflex HC processes in a simple, one-step injection molding operation instead of the multiple steps needed for vulcanized rubber, which requires raw materials to be premixed, processed for 5 -10 minutes on a two-roll mill, and made into strips to feed into a molding machine. The rubber is then injected into the mold and requires extra curing time. During the injection-molding step, the TPE insert forms a strong bond with the substrate, such as polypropylene or polyethylene, used for the container closure.

To correct this, raise both the mold temperature and process temperatures. Injection molding of thin wall parts requires a low viscosity TPE. Extrusion, blown film production or blow molding requires high melt strength.

To correct this, raise both the mold temperature and process temperatures. Injection molding of thin wall parts requires a low viscosity TPE. Extrusion, blown film production or blow molding requires high melt strength.

However, the original TPE that the company selected caused issues during 2K molding. The company had the opportunity to conduct molding trials to ensure ideal temperature and pressure parameters.  With its enhanced processability, the OnFlex-S thermoplastic elastomer enabled the company to solve its 2K molding issues and reduce system costs.

However, the original TPE that the company selected caused issues during 2K molding. The company had the opportunity to conduct molding trials to ensure ideal temperature and pressure parameters.  With its enhanced processability, the OnFlex-S thermoplastic elastomer enabled the company to solve its 2K molding issues and reduce system costs.