What are the requirements for raw materials in the stone paper blowing production line
DATE：2024/12/18 10:13:31 / READ： / SOURCE：This station
The efficiency and product quality of the stone paper blowing production line are highly dependent on the selection and processing of raw materials. Stone paper usually refers to a composite material mainly composed of calcium carbonate and using synthetic materials such as polyethylene (PE) as the matrix. This material has superior physical properties and environmental characteristics, with the following specific requirements:
1. Purity of raw materials
The main component of stone paper is calcium carbonate, and its purity directly affects the quality of the product. High purity calcium carbonate can provide better mechanical properties and lower color difference. When selecting calcium carbonate, it should be ensured that it contains no more than 1% impurities to ensure the uniformity and stability of the final product.
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The particle size and distribution of calcium carbonate also have a significant impact on the properties of stone paper. Usually, the calcium carbonate particles used for blowing should reach a suitable particle size (usually a few micrometers to tens of micrometers) to ensure their dispersion uniformity in the plastic matrix. Excessive particles may cause a decrease in smoothness and a weakening of film strength, while excessively small particles may affect their processing performance.
3. Polymer materials
The polymer materials in stone paper are generally high-quality polyethylene (PE), polypropylene (PP), etc. These materials need to meet certain food safety standards and environmental requirements, for example, food grade polyethylene has higher safety requirements than ordinary polyethylene. When selecting polymers, their melt index (MFI) should also be considered to ensure good processing flowability during the production process.
4. Selection of additives
To improve the strength, flexibility, and weather resistance of stone paper film, some additives may be added during the production process, such as plasticizers, antioxidants, anti UV agents, coloring agents, etc. The selection of these additives needs to comply with corresponding environmental standards and must not contain harmful substances to ensure the environmental friendliness and safety of the product.
5. Stability of raw materials
The stability of the selected raw materials is crucial for the continuity of production and long-term storage of the product. Some raw materials may undergo moisture absorption or oxidation reactions when the storage environment changes, affecting their performance. Therefore, raw materials with good stability should be selected and stored under suitable conditions.
6. Environmental friendliness
With the increasing awareness of environmental protection, the stone paper industry is also paying more and more attention to the environmental friendliness of raw materials. Priority should be given to selecting non-toxic and biodegradable raw materials to ensure that the stone paper film produced does not cause a burden on the environment after use.
7. Processing capability
The processing performance of different types of raw materials varies greatly. In production, the selected raw materials should have good melt flowability and molding ability, and can be smoothly processed through extruders and blowing equipment. In addition, reasonable thermal stability is required to avoid degradation and decomposition during the extrusion process.
The stone paper blowing production line has very strict requirements for raw materials, including purity, particle size, selection of polymer materials, use of additives, and environmental friendliness, all of which need to be carefully considered. High quality raw materials are directly related to the performance, environmental characteristics, and market competitiveness of the final product. Therefore, when selecting raw materials, enterprises should try to comprehensively consider and ensure the selection of high-quality materials to support the efficient operation of the production line.
The main component of stone paper is calcium carbonate, and its purity directly affects the quality of the product. High purity calcium carbonate can provide better mechanical properties and lower color difference. When selecting calcium carbonate, it should be ensured that it contains no more than 1% impurities to ensure the uniformity and stability of the final product.
two
The particle size and distribution of calcium carbonate also have a significant impact on the properties of stone paper. Usually, the calcium carbonate particles used for blowing should reach a suitable particle size (usually a few micrometers to tens of micrometers) to ensure their dispersion uniformity in the plastic matrix. Excessive particles may cause a decrease in smoothness and a weakening of film strength, while excessively small particles may affect their processing performance.
3. Polymer materials
The polymer materials in stone paper are generally high-quality polyethylene (PE), polypropylene (PP), etc. These materials need to meet certain food safety standards and environmental requirements, for example, food grade polyethylene has higher safety requirements than ordinary polyethylene. When selecting polymers, their melt index (MFI) should also be considered to ensure good processing flowability during the production process.
To improve the strength, flexibility, and weather resistance of stone paper film, some additives may be added during the production process, such as plasticizers, antioxidants, anti UV agents, coloring agents, etc. The selection of these additives needs to comply with corresponding environmental standards and must not contain harmful substances to ensure the environmental friendliness and safety of the product.
5. Stability of raw materials
The stability of the selected raw materials is crucial for the continuity of production and long-term storage of the product. Some raw materials may undergo moisture absorption or oxidation reactions when the storage environment changes, affecting their performance. Therefore, raw materials with good stability should be selected and stored under suitable conditions.
6. Environmental friendliness
With the increasing awareness of environmental protection, the stone paper industry is also paying more and more attention to the environmental friendliness of raw materials. Priority should be given to selecting non-toxic and biodegradable raw materials to ensure that the stone paper film produced does not cause a burden on the environment after use.
The processing performance of different types of raw materials varies greatly. In production, the selected raw materials should have good melt flowability and molding ability, and can be smoothly processed through extruders and blowing equipment. In addition, reasonable thermal stability is required to avoid degradation and decomposition during the extrusion process.
The stone paper blowing production line has very strict requirements for raw materials, including purity, particle size, selection of polymer materials, use of additives, and environmental friendliness, all of which need to be carefully considered. High quality raw materials are directly related to the performance, environmental characteristics, and market competitiveness of the final product. Therefore, when selecting raw materials, enterprises should try to comprehensively consider and ensure the selection of high-quality materials to support the efficient operation of the production line.
Author：admin