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Is environmentally friendly hot melt adhesive really environmentally friendly? Hot melt adhesive has fast bonding speed, stable performance, and is conducive to sustainability. Automation technology tells operators that it is highly cost-effective. And in the process of using hot melt adhesive, there is no need for a drying process, the bonding process is simple, the range of materials that can be bonded is wide, and the bonding compressive strength is good.
However, hot melt adhesive is a chemical product. The main components are EVA, rubber, polyolefin, and polyamide as the theme materials, produced using thickening resins and softeners. Our common medical supplies, such as shoes, hats, bags, etc., are very common in daily life. Hot melt adhesive is used for daily chemical packaging, label tape, etc.
In fact, environmentally friendly hot melt adhesive is non-toxic, pollution-free, and easy to package, transport, and store. It is an environmentally friendly chemical material that is deeply loved by the public. The international hot melt adhesive environmental testing project includes ROSE standards, formaldehyde testing, determination of 18 polycyclic aromatic hydrocarbons, halogen fluorine, chlorine, bromine, iodine content, determination of perfluorooctane sulfonate (PFOS) content, determination of nonylphenol polyvinyl chloride ether (NDEOS) content, and REACH84 testing. Medical hot melt adhesive has also passed the skin insensitivity test.
Of course, it cannot be ruled out that environmentally friendly hot melt adhesive manufacturers in the market use a large amount of non environmentally friendly and cost-effective materials in order to reduce costs, resulting in their hot melt adhesives being recognized as environmentally friendly. Friendly products.
The aging of hot melt adhesive is mainly manifested in two aspects: appearance and performance. Visually, the color of hot melt adhesive may become dull, and even yellow or brown tones may appear. The texture may become hard and brittle, losing its original flexibility, and the surface may have cracks or fissures. In terms of […]
The root cause of UV ink printing surface not sticking to hot melt adhesive isThe surface energy of the cured UV ink layer is extremely low (usually below 34 dynes), and the adhesive cannot wet and spreadIt can only stop on the surface to form a “false adhesion”, and when subjected to a slight force, […]
Wireless glue binding machines are widely used in graphic and text fast printing stores. Common problems and solutions in the binding process of glue binding machines include: 1、 Poor quality behind the book core milling1. If the book core is not neat or placed neatly, it should be ensured that each piece of paper is […]
Misconception 1: Increasing the amount of glue applied can make it stick Many operators find that the BOPP film surface cannot stick, and their first reaction is to add glue. In fact, increasing the adhesive amount from 40g/m ² to 80g/m ² does not increase the bonding strength by less than 20%, but instead causes […]
