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MOHAMEDAWWAD96
Greatest Gooner
Joined: 07 Aug 2022
Posts: 92
Location: egypt |
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 Apologies for the confusion |
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1. Starch: Starch is a widely used surface sizing agent in the paper industry. It can be derived from various sources such as corn, potato, or tapioca. Starch is typically cooked into a gelatinous paste and applied to the paper surface, forming a thin film upon drying. It improves the paper's surface strength, printability, and ink holdout.
عفريتة زيت
1. Modified Starches: Modified starches are starch derivatives that have been chemically or physically modified to enhance their performance as surface sizing agents. These modified starches can provide improved water resistance, surface smoothness, and printability compared to native starch. Examples include cationic starch, oxidized starch, and hydroxyethyl starch.
1. Polyvinyl Alcohol (PVA): PVA is a water-soluble synthetic polymer used as a surface sizing agent. It forms a thin, transparent film on the paper surface, which improves the paper's surface strength, smoothness, and ink receptivity. PVA sizing also enhances the paper's water resistance and improves its dimensional stability.
1. Styrene Butadiene Latex (SBR Latex): SBR latex is a synthetic polymer emulsion used as a surface sizing agent. It forms a thin, flexible film on the paper surface, which improves the paper's surface strength, water resistance, and printability. SBR latex sizing is commonly employed in the production of coated papers and paperboards.
مفتاح سيفون
1. Protein-based Sizing Agents: Proteins derived from sources such as soybean, casein (milk protein), and gelatin are used as surface sizing agents in specialty papers. These sizing agents provide improved surface strength, ink holdout, and smoothness.
1. Wax Emulsions: Wax emulsions, such as paraffin wax or polyethylene wax, are used as surface sizing agents to impart water repellency and enhance printability. Wax forms a thin, hydrophobic film on the paper surface, providing resistance to water penetration and improving ink holdout.
دسك خشب
It's important to note that the choice of surface sizing agent depends on factors such as the desired paper properties, intended applications, printability requirements, and cost considerations. Paper manufacturers select the appropriate surface sizing agents based on their compatibility with the paper grade, processing conditions, and the desired performance characteristics.
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| 24 Aug 2023 07:42 |
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