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As DIY enthusiasts and crafters, we all know the importance of hot glue as one of the essential tools in our arsenal. Despite its popularity, many of us have often found ourselves asking, “How long does hot glue last”? It’s a perplexing question that can leave many scratching their heads. With that said, in this comprehensive guide, we will delve into the science behind hot glue and determine its average lifespan. Additionally, we will explore various tips and tricks that can help extend its durability, and finally, we will discuss the dangers of using expired hot glue and when it’s best to replace it. So, grab a cup of coffee and let’s get started!<\/p>\n

Why Does Hot Glue Break Down?<\/h2>\n

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\nHave you ever used hot glue only to find out that it has lost its effectiveness sooner than you expected? You might be wondering why hot glue breaks down over time. There are several factors that contribute to the lifespan of hot glue such as the science behind its composition and environmental factors. Understanding these factors can help you make the most out of your hot glue and avoid potential disasters. In this section, we will explore the reasons why hot glue breaks down and how to make it last longer.<\/p>\n

The Science Behind Hot Glue<\/h3>\n

Hot glue is a thermoplastic adhesive that consists of three main components: a polymer base, a tackifier (resin), and a wax or oil used to reduce the glue’s viscosity. The polymer base is typically made of ethylene-vinyl acetate (EVA) copolymer. When hot glue is heated, the polymer base melts and becomes liquid. The tackifier, which is usually a rosin or resin, allows the glue to adhere to surfaces. The wax or oil is added to the glue to make it more viscous and easier to apply. <\/p>\n

The strength of the bond created by hot glue depends on several factors such as the temperature at which the glue was applied, the type of surface being bonded, and the pressure applied during bonding. The bond is created when the hot glue cools and solidifies. During this process, the polymer base undergoes a physical transformation from a liquid to a solid state which reinforces the bond.<\/p>\n

It’s important to note that hot glue is not suitable for all surfaces. For example, it may not be effective when gluing metal or plastic surfaces, as these surfaces typically have a low surface energy and do not provide a good surface for the hot glue to adhere to. <\/p>\n

The following are some additional interesting facts about the science behind hot glue:<\/strong><\/p>\n