Pulp molding pulp refers to the process of preparing pulp raw materials (such as waste paper, straw fiber, bagasse pulp board, wood pulp board, bamboo pulp board, unpulped fiber bundle, various performance auxiliary materials, etc.) into a pulp suitable for the production of pulp molded products through a series of processing steps.
The main purpose of the process is to make the pulp liquid have specific properties, such as good fluidity, appropriate concentration, certain strength, certain physical and chemical properties, such as oilproof, waterproof, powder discharge, anti-static, and color, etc., so that the subsequent molding in the mold into a variety of products that meet the strength, shape, color, performance, surface finish, etc. required by customers
●Raw material selection: choose pulp with good quality and suitable fiber length. Wood pulp, bamboo pulp, waste paper pulp, sugarcane pulp, straw pulp, etc. are usually used, and through the appropriate matching, the product quality can meet the needs of customers, the process flow is smooth, and the rejection rate is reduced.
●Ratio accuracy: Ensure that the ratio of various raw materials is accurate to achieve the expected performance.
●Stir evenly: Stir thoroughly to avoid agglomeration or unevenness of the slurry. Through pulping, pulping, and homogenization: the raw materials are crushed into fibers, so that the fibers are further filamentized, the binding force of the fibers is improved, the properties of the slurry are uniform and consistent, and the internal stress of the slurry is avoided, and the unreasonable deformation of the finished product is caused by clumping.
● Concentration control: control the concentration of slurry according to product requirements. At present, automatic concentration control is being promoted and applied in the industry.
●Use of additives: There will be corresponding pigments, oil-proof, waterproof, anti-powder, wet-strength agents, dry strength agents, anti-static agents, anti-mildew agents, etc., according to the needs to improve product performance.
●pH adjustment: maintain a suitable pH value to ensure the stability of the slurry, PH value control has a great impact on the addition of oil repellent, especially when the pulp board is not cleaned, there are chemical residues, special attention should be paid to.
●Filtration treatment: to remove impurities and foreign matter in the slurry, the slurry return system should pay special attention to the design of the pipeline to prevent the slurry from being retained or even moldy and blackened.
●Cleanliness and hygiene: Pay attention to cleanliness during the preparation process to avoid impurities contaminating the slurry.
● Equipment maintenance: Regularly maintain the equipment to ensure its normal operation.
●Process optimization: Continuously optimize the preparation process to improve production efficiency and product quality.
To sum up, the preparation of
pulp molding pulp is a comprehensive technical work, which requires careful selection of raw materials, control of the preparation process, and attention to environmental protection and energy saving. Only in this way can we prepare high-quality and high-performance
pulp molding pulp, provide a solid guarantee for the subsequent production of molded products, and promote the sustainable and healthy development of the
pulp molding industry.
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