The glue coating process represents a modern technique that has gained widespread recognition due to the increasing adoption of German Vitu Cabinets in China over recent years. As this process utilizes a two-component polyurethane reactive system, many users—both companies and individuals—are often confused about the specific requirements and precautions involved. This article aims to clarify some common misconceptions, hoping to provide guidance for businesses and operators utilizing this technology.
One prevalent misunderstanding about the glue coating process is that it resembles the adhesive properties of foam (sponge) with single-sided glue, leading to concerns that such strips might fall off over time. Single-sided adhesive foam strips are typically bonded using a physical method, relying solely on the inherent stickiness of the glue, which is unreacted. This form of bonding is referred to as physical bonding. However, physical bonds are susceptible to changes in the environment, such as temperature fluctuations. When temperatures drop, the adhesive's viscosity weakens, and when they rise, the bond may degrade further. Over time, these environmental shifts can cause the glue strip to detach automatically. Conversely, the glue strips produced through the glue coating process undergo a chemical reaction between two components, resulting in an irreversible bond. This chemical bonding ensures that the adhesive remains stable regardless of environmental conditions, making it durable and reliable over extended periods.
Dalian Huagong Innovation Technology Co., Ltd., an early domestic pioneer in glue coating technology, has been instrumental in introducing this process to the market. Mr. Han, who leads the company, emphasizes the importance of excellent pre- and post-sales service, ensuring customers experience top-notch professionalism and product quality. Currently, the company’s equipment has been exported globally, with ongoing efforts to develop innovative products. We warmly invite potential collaborators to reach out for discussions.
Another misconception revolves around the assumption that the glue coating process is irrelevant to the adhesive properties of the workpiece. In reality, the success of bonding depends significantly on the surface tension of the materials being joined. Workpieces with high surface tension adhere better to the glue, creating a stronger bond. Conversely, materials with lower surface tension may result in weaker adhesive bonds, causing the glue strips to detach prematurely. To address this issue, two common solutions are often employed: applying a primer layer (commonly used on stainless steel surfaces) before gluing or using flame activation techniques (typically applied to plastics, fluorocarbon-coated surfaces, or surfaces treated with wrinkle-resistant coatings).
A third misunderstanding often arises regarding the influence of environmental factors on the glue coating process. Given that this is a chemical reaction process, external conditions play a crucial role. Higher ambient temperatures accelerate the reaction, potentially leading to thicker glue strips with larger internal bubbles. This can reduce the adhesive strength, create a rough surface, and impair joint quality. Extremely low temperatures may hinder the reaction altogether, resulting in hardened glue strips that lack elasticity. Similarly, low humidity levels could contribute to harder glue strips. However, these issues arise only if the machinery operates optimally.
Lastly, there is a misconception that the quality of glue strips depends solely on the equipment rather than the glue itself. While equipment quality is critical, the choice of glue cannot be overlooked. High-quality glue facilitates easier operation, ensures consistent application, and produces strips that remain shiny, elastic, and resilient over time. Such glue minimizes the need for frequent cleaning and reduces material wastage. Therefore, it is advisable to select glue with stable performance to ensure optimal results.
In conclusion, understanding the nuances of the glue coating process and dispelling common myths can greatly enhance its effectiveness and reliability. By addressing these misconceptions, businesses and operators can leverage this advanced technology to its fullest potential, ensuring superior outcomes and long-term benefits.
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