Entries by Ashley

Troubleshooting Shrinkage in Urethane Adhesives and Encapsulants

In our last blog, the team at Resin Designs walked you through how to troubleshoot voids in urethane adhesives and encapsulants. This week, let’s explore how to properly troubleshoot shrinkage. How Shrinkage Occurs Shrinkage takes place in elastomers when polymers and catalysts react. Under normal processing conditions, shrinkage rates remain at 1-2%. Warping will occur […]

Troubleshooting Voids in Urethane Adhesives and Encapsulants

In our last blog, you gained insight into troubleshooting polyurethane air entrapment. This week let’s look at troubleshooting voids in urethane adhesives. Causes of Voids Before de-molding, there could potentially be huge voids in the part or on the surface. The voids are visible with the naked eye and they occur at thin-walled sections. Pot […]

Troubleshooting Polyurethane Air Entrapment

Urethanes are commonly used to encapsulate electronic circuits because of their moisture resistance and other positive attributes. These benefits are important, however sometimes issues arise that must be remedied immediately to achieve the best results. Bubbles Appearing in Parts On occasion, small bubbles do become visible throughout the parts and may not be localized. Causes […]

Troubleshooting Epoxies

Resin Designs creates and designs custom epoxies for a variety of industries. These products provide superior adhesion to metals, ceramics, rubbers, glass and plastics. Below are several issues face when working with epoxies, as well as some tips on how to fix them. Issue #1: The epoxy mixture has not cured once the cured time […]

Resin Designs Acquired by Chase Corporation

On October 3rd, Resin Designs was acquired by Chase Corporation. We are excited to become part of the Chase team and start a new chapter in the Resin Designs’ evolution. Read more here.

Troubleshooting UV Curing Adhesives

UV curing adhesives are extremely convenient as they provide a way to rapidly cure a product in specific applications. There are two cure mechanisms that are extremely different from one another – cationic and free radical. Understanding Cationic UV Systems In regards to cationic UV cure products, such as Vividcure 86011, photo-generated acids catalyze polymerization […]

UV Acrylates- Secondary Cure Mechanisms

Overview In two of our previous articles, “Understanding UV Curing Adhesives” and “Cationic Epoxies- Advantages” we discussed the benefits of single component light curing adhesives. UV/light curing adhesives use energy from visible light or UV radiation to initiate polymerization. However, areas that are not exposed to radiation will not cure. This weakness has led to […]

Urethanes in LED Encapsulation – PT 2

In our previous blog “Urethanes” we discussed the advantages of urethane adhesives and applications when they are advantageous. One particular application that urethanes excel in is LED encapsulation. When high temperature resistance is not necessary, urethanes can be implemented in place of silicones. Urethanes work more efficiently in low temperature applications and are easily utilized […]

Urethanes

Understanding Urethanes Urethanes offer an array of benefits including flexibility, water white clarity, low temperature functionality, and elongation as well as abrasion resistance. Due to these properties, urethanes are at an advantage compared to other adhesives in devices that are undergoing stress due to discrepancies of component composition. Numerous urethanes consist of low glass transition […]

UV Display Adhesives (LOCA)

UV display adhesives are commonly referred to as LOCA, otherwise known as liquid optically-clear adhesives. This specific type of adhesives is primarily used for the electronic industry, including products such as smartphones, touchpads, LCD screens and much more.  Due to its rapid drying process, high transmittance and low shrinkage, LOCA has become an increasingly useful […]