Datasheet Duel is a Matrix Technology series that aims to provide engineers in specific fields with an apples-to-apples comparison of the strengths and weaknesses of two products. This edition is tailored for engineers within the transportation manufacturing industry seeking the optimal commercial vehicle tape. Our examination focuses on key specifications within the main categories that engineers typically consider when evaluating bonding tapes (Peel Adhesion, Elongation, Dynamic Sheer, Tensile Strength, and Pricing).
At Matrix Technology, our commitment lies in delivering top-performing, high-quality products to the Canadian marketplace. In this summary, we strive to maintain impartiality; however, it’s important for transparency to acknowledge that we hold the position as the number one authorized distributor of Saint Gobain Tapes in Canada. We understand the potential impact on our credibility. We have analyzed the data sheets of 3M CV45 and Saint Gobain A7600, the two choices widely considered the optimal commercial vehicle tape choices for bonding applications. As you read, it is crucial to recognize the nuanced nature of technical data assessments, especially as we endeavor to outline areas where direct apples-to-apples comparisons may not be applicable. Enjoy!
1) Dynamic Shear: Saint Gobain A7600 (79lb/in to 70lb/in – equivalent test).
Dynamic shear refers to the measurement of shear forces in dynamic or changing conditions. In panel bonding scenarios, dynamic shear adhesion values gain prominence, particularly given the vertical orientation and opposing forces of gravity. A7600 excels in maintaining structural integrity under these conditions.
2) Elongation: Saint Gobain A7600 (152psi / 0.42in – 126psi / 0.37in).
The superior elongation of A7600 plays a pivotal role in preventing disconnects and gap formations at strip ends, a critical consideration in transportation applications. While the numerical difference in elongation may seem small, it could prove sufficient to avert gaps and potential issues like “panel popping.” A7600’s ability to elongate effectively, minimizes the risk of structural compromises compared to the CV45. The numbers were reported after 72 hours on a clean surface.
3) Peel Adhesion: (It’s Tricky! Non-equivalent test!) .
While peel adhesion is a crucial factor, variations in reported values can stem from factors such as the “surface energy” of the substrate involved. According to ASTM D-3330 test standards the test is typically conducted on a stainless steel panel and in this case has been conducted on an aluminum panel by 3M. Speculation arises regarding whether the reported higher values for the CV series result from testing on both surfaces and the invariability of surface energy and emphasizing the more favorable outcome.
4) Tensile Strength: 3M (83lb/in to 80lb/in) .
Tensile strength analyzes pulling forces such as movement of the payload, wind, and potential inertial forces. Although the numbers are close the CV45 performed slightly better under equivalent tests.
5) Other Benefits: Saint Gobain – “quick stick – 20 min adhesion”
A7600 offers a “quick stick” advantage, facilitating swift application, staging, and panel movement during assembly—a significant benefit in the transportation market.
6) Pricing: Call Matrix and find out!
Both products are competitively priced and can vary significantly depending on the source. To obtain pricing information or discuss customized converting options, Click here to connect with Matrix Technology.
