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2024/10/16
Drawbacks of PUR Hot Melt
While PUR hot melt adhesives offer superior strength and durability, they do come with certain challenges. Let’s take a closer look at the downsides associated with PUR adhesives. Moisture Sensitivity: PUR hot melts react with moisture in the air to cure, which is what gives them their strength. However, this property also means...
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2024/10/16
The Difference Between PUR Hot Melt and Regular Hot Melt
Traditional Hot Melt Bonds The key difference between PUR hot melt and traditional hot melt lies in the type and strength of bond they create. Let’s start with traditional hot melt adhesives. Think of a traditional hot melt bond like a wax bond. The adhesive is heated to a liquid state, applied to the surfaces, and then allowed to ...
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2024/08/29
Introduction of composite package bags
Composite packaging bags are made of two or more materials of different properties through specific processes and technologies. This kind of packaging bag combines the advantages of different materials and has excellent barrier properties, mechanical properties, heat resistance, cold resistance, oil resistance and chemical resistance....
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2024/08/28
Dry lamination machine
Working principle of dry laminatorMaterial preparation: Prepare different film materials (such as plastic film, aluminum foil, etc.).Coating: Apply dry glue on the surface of the substrate, usually using a coating machine or glue coating device.Lamination: Laminate the substrate coated with glue with other materials by heating and pre...
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2024/08/22
How to choose flexible package adhesive?
When selecting polyurethane adhesives for composite flexible packaging, the following factors should be considered: 1.Adhesion strength: When selecting an adhesive, evaluate its adhesion to different materials (such as polyester, polypropylene, polyethylene). High adhesion strength ensures that the package is not easy to delami...