新闻中心
EVA hot melt adhesive is a type of plastic adhesive product. The physical state of hot melt adhesive changes with temperature within a certain temperature range, but its chemical properties remain unchanged. Hot melt adhesive is non-toxic and odorless. How much do you know about the six major ways of applying hot melt adhesive?
1. Spiral spray adhesive
This is a relatively common way of spraying glue. EVA hot melt adhesive is discharged from a nozzle with fine nozzle holes onto regular spiral filaments by external air pressure. Applying glue in this way can significantly reduce the amount of glue used per unit area.
2. Roller coating
The molten EVA hot melt adhesive is conveyed to the rotating adhesive tank. The gluing roller rotates inside the tank, and the molten hot melt adhesive on the gluing roller is evenly scraped with a scraper. The product comes into contact with the rotating adhesive roller and is evenly coated. This gluing method is mainly used for fabric coating lamination, sheet gluing, etc.
< h4 > < strong > 3. The flat die blade coating < / strong > < strong > < / strong > < / h4 >
This is a relatively common way of grasping. After passing through the heated throat, the molten hot melt adhesive is evenly distributed in the guiding channels of the mold, and then extruded from the mold lip with preset adhesive film thickness and width. Most industrial hot melt tapes and labels are bonded using the mold scraper process.
< h4 > < strong > 4. Foam coating < / strong > < strong > < / strong > < / h4 >
In some special application scenarios, to achieve buffering or shock absorption effects and reduce the amount of adhesive used, a dedicated foaming melt adhesive machine can be employed to mechanically mix nitrogen into the molten hot melt adhesive, thereby forming the inflation of EVA hot melt adhesive. Then the mechanically foamed hot melt adhesive is applied to the workpiece through a nozzle. Foam coating technology has been widely used in the assembly of automotive parts to replace traditional rubber gaskets.
5. Stripping the glue
Similar to dispensing, this process can be used when two substrates only need to be bonded in strips. Common applications include the edges of plastic boxes such as PET curtain boxes, wine bottle boxes, and cosmetic boxes.
6. Dispensing
When two objects only need to be partially joined, dispensing is a relatively economical and fast simple process. Dispensing is usually used for folding cartons or cardboard binding.
The reason for the occurrence of wire drawing, uneven spine, or page dropping in the wireless adhesive packaging of graphic and text fast printing stores may not be solely due to the adhesive material itself. The paper coating, adhesive amount, melt temperature, roller state, and cooling time all jointly affect the binding result. This article […]
Book binding adhesivePurchasing should not only compare unit prices. Wireless adhesive packaging, quick printing of graphics and text, and on-demand production of short versions have different focuses on opening time, initial adhesion, flexibility, and operational stability. This article provides a procurement evaluation framework for practical production. Core KeywordsBook binding adhesive、Graphic and text quick printing adhesiveWireless […]
Recently, in accordance with the “Regulations on the Work of Central Ecological and Environmental Protection Inspection”, with the approval of the Central Committee of the Communist Party of China and The State Council, the second batch of the third round of central ecological and environmental protection inspections has been fully launched. Seven central ecological and […]
Sustainable hot melt adhesives for handbag manufacturing are increasingly needed by consumers and businesses for products that can meet environmental requirements while still achieving their core purposes. Handbags are no exception. Trends show a clear shift from plastic to paper, and some countries have completely banned the use of plastic bags. The < figure class="wp […]
