Use of instant noodle cover adhesive
When producing instant noodle cover, PU two-component adhesive is used, but the paper is not easy to composite with aluminum foil (for instant noodle cover material is PET/reverse printing/PU glue/paper/PU glue/aluminum foil/hot melt adhesive EVA) PVC shutters are a common window decoration material. They are made of PVC material and generally consist of multiple horizontal or vertical blinds. PVC material has the advantages of being waterproof, moisture-proof, corrosion-resistant, and easy to clean, so it is widely used in indoor and outdoor window decoration. Pvc Shutters,Pvc Plantation Shutters,Pvc Shutters For Windows,Pvc Window Shutters Huaian Huiyuan Wooden Products Co.,Ltd , https://www.hyshutters.com
Paper is a kind of porous material and has strong absorption of PU glue. Therefore, it is coated with the same adhesive roller as the composite film. Since most of the glue is sucked into the hole of the paper, the amount of glue on the surface is not enough. Therefore, the composite fastness is greatly reduced, and the composite fastness to aluminum foil is poor.
The solution is to coat a layer of primer on the paper first, which can be other tree-bearing glue liquids. After the film is dried, the PU compound glue is applied on the surface, and the composite fastness can be improved.
It should be noted that the use of EVA hot-melt adhesives in the inner layer of this type of structure is not suitable, even though EVA hot-melt adhesives have a wide range of cup adaptability, ie, the use of PP, PE, PS or PVC, etc. The instant noodle bowls can all use the inner layer of EVA hot melt adhesive to firmly seal the lidstock on the bowl at a low temperature, but the pure EVA hot melt adhesive without easy release agent is not easy to tear It is not easy to open Kaifeng. Materials that reduce the heat-seal fastness, such as surfactants, should be properly added in pure EVA.
The advantages of PVC blinds mainly include the following points:
1. Strong durability: PVC material has good weather resistance, is not easily affected by natural environments such as sunlight and rain, and has a long service life.
2. Easy to clean: PVC material has a smooth surface and is not easy to absorb dust, making it easy and quick to clean.
3. Corrosion resistance: PVC material is not easily corroded by chemical substances and will not rot or deteriorate.
4. Waterproof and moisture-proof: PVC material itself has waterproof and moisture-proof properties and is suitable for use in humid environments.
5. Energy saving and environmental protection: PVC material has excellent thermal insulation properties, which can effectively reduce energy consumption and meet the requirements of energy saving and environmental protection.
In addition, PVC shutters are available in a variety of styles and colors, which can be matched according to personal preference and decoration style. It is easy to install and operate. The opening and closing angle of the louvers can be flexibly adjusted as needed to control indoor light and ventilation.
In general, PVC shutters are a practical, beautiful and economical window decoration material, suitable for various indoor and outdoor environments, and are one of the common choices in modern home decoration.