Correct use of EVA hot-melt adhesives, open perfect binder and analysis of common problems (I)

one, VA hot melt adhesive and its use

EVA hot melt adhesive is the most commonly used binding material for book binding in China, that is, adhesive binding material for wireless binding; the reason why it is most used is because it has many advantages, and it is suitable for quick publishing, which can shorten the publishing cycle and adapt to The fast-paced needs of modern society. The following is a brief introduction of EVA hot melt adhesive and correct use as follows:

　　 1. What is EVA hot melt adhesive

Normal > EVA hot melt adhesive is a kind of fusible polymer without solvent or water content 100% solid. It is a solid at room temperature. It melts to a certain degree and becomes a viscous liquid with a certain viscosity. Sticky body. The melted EVA hot melt adhesive is a light brown translucent or white adhesive. EVA hot melt adhesive composition consists of basic resin (ethylene and vinyl acetate polymer), tackifiers, viscosity modifiers, antioxidants and cold agents, heat-resistant agents and other components.

Normal > 2. Characteristics of EVA hot melt adhesive

Normal > 1         It is usually a solid at room temperature and melts into a liquid adhesive when heated to a certain degree. Once cooled to below the melting point, it rapidly solidifies (solidified after hardening) and is easy to store and store.

Normal > 2         Fast curing, low pollution, strong adhesion, adhesive layer has a certain degree of flexibility, there is a certain degree of hardness, it is suitable for the binding of the book.

Normal > 3         There is re-stickiness. When the adhesive is applied to the adherend, the adhesive layer can be heated and softened after the adhesive layer is cured or hardened, and the adhesive is recovered and re-bonded. Conducive to the recovery of defective products.