MODULE I MANUFACTURING
combines the flexibility and durability of an elastomeric foam substrate and the strength of acrylic adhesives, can be implemented to eliminate the production delays associated with curing.
Q A
What is the impact of adhesion choice on module performance?
Both silicone and tape options are designed to last more than 20 years, matching the average 20 to 25- year lifespan of modules, but production missteps can compromise durability, efficiency and longevity. For instance, if residue from the silicone adhesive is not properly cleaned, it can interfere with the module’s ability to capture sunlight, thus reducing the cell efficiency. Additionally, if a module’s frame is disrupted before the silicone solution has fully cured; the poor joint could adversely affect the module’s integrity.
The best way for manufacturers to prevent these production missteps is to select the adhesion option that works best in the context of their operations. A streamlined framing process that matches the speed of the line will ensure high-quality modules.
Q A
What factors should manufacturers consider when selecting framing technologies?
Before selecting the right solution for solar module framing, manufacturers must consider the level of automation on their production line. For lines that rely heavily on manual labor, tapes provide the best immediate framing solution due to their ability to provide a fast, clean application with instant adhesion, which enables workers to move the modules quickly through the framing process.
Meanwhile, lines that are highly automated better accommodate pumpable liquid solutions. While silicone was the traditional choice, manufacturers must now address the potential bottlenecks that can arise with this type of framing adhesive. First, silicone sealants require time to cure and cannot be handled immediately after the sealant is applied. Instead of moving straight down the line, the modules will have to be
Q A
What are the challenges that manufacturers face during the framing process?
Solar module manufacturers confront several challenges in the framing process, but the pressure to increase production efficiency and capacity on the line remains one of their most significant hurdles. One way to address this issue is to select the right materials that can allow for fast framing while also ensuring high-quality modules.
Popular choices for adhering frames to modules include bonding tapes and silicone sealants, each bringing its own benefits. Tapes provide fast adhesion with immediate handling, while silicone sealants require time to cure before handling; if the framed module is moved too soon, the integrity of the unit could be jeopardized. Also, the application of silicone sealants often results in excessive overflowing between the frame and the edge of the module, requiring extra cleaning and subsequent increased labor time on the line. A simple tape solution, which
SolarBond Frame Tapes Issue II 2012 I
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