SILIT-PPN: A High-Efficiency Solution for Denim Neutralization

SILIT-PPN: A High-Efficiency Solution for Denim Neutralization

SILIT-PPN: A High-Efficiency Solution for Denim Neutralization

In the denim garment processing industry, the neutralization process after PP spraying and snowflake frying is a crucial step that determines both the quality of the finished product and its environmental friendliness. Traditional reducing agents suffer from issues such as low efficiency and high pollution. 

However， SILIT-PPN,with its innovative technology, offers a brand-new solution. This article will provide a detailed introduction to its operation steps and core advantages, aiming to help enterprises enhance production efficiency and market competitiveness.

Operation Steps of SILIT-PPN Neutralization Process


1. Preparation Phase
  • Conduct an initial water wash for denim garments that have undergone PP spraying or snowflake frying to remove surface floating colors and debris.Prepare industrial washing equipment, fill it with clean water, and adjust the water temperature to 40°C (the optimal reaction temperature; it can also be operated within the range of room temperature - 50°C).
2. Solution Preparation
  • Slowly pour SILIT-PPN powder into water at a ratio of 0.3 - 1.0g/L, and stir until it is completely dissolved. There is no need for additional pH adjustment (the pH of a 1% aqueous solution is 2.0 - 4.0, weakly acidic).
3. Neutralization Treatment
  • Immerse the denim garments in the treatment solution, start the washing program, and stir at a low speed for 5 - 15 minutes (the treatment duration can be adjusted according to the degree of bleaching: 5 - 10 minutes for light bleaching and 10 - 15 minutes for heavy bleaching). Observe the color of the solution during the process. When the color no longer darkens, it indicates that manganese dioxide has been fully removed.
4. Subsequent Treatment
  • Drain the treatment solution, rinse the garments 2 - 3 times with clean water to remove residual chemicals, and then proceed with regular softening, drying, and other processes.
 


Core Advantages of SILIT-PPN

  • High Efficiency and Time Saving, Boosting Productivity
As a high-concentration reducing agent, SILIT-PPN can quickly decompose manganese dioxide remaining from potassium permanganate within 5 - 15 minutes. Compared with traditional reducing agents (such as sodium pyrosulfite), the treatment time is shortened by over 50%, significantly enhancing the efficiency of assembly line production.
  • Green and Environmentally Friendly, Ensuring Compliance
The product contains no formaldehyde, APEO, or heavy metal ions. It has passed the Oeko-Tex 100 standard certification and complies with international environmental regulations. It is odorless, and the treatment waste liquid is easy to neutralize, reducing the cost of sewage treatment and the environmental burden.
  • Cost-Effective, Improving Efficiency
The recommended dosage is only 1/3 - 1/2 of that of traditional reducing agents. Combined with room-temperature operation, it can save approximately 50% of the comprehensive cost. Additionally, its gentle treatment of fabrics reduces the defective product rate, further enhancing economic benefits.
  • Easy to Operate and Highly Adaptable
The powder dissolves easily in water and can be directly added to washing equipment without complex dissolution or pH adjustment. It is compatible with existing production lines. With a sealed packaging, its shelf life lasts up to 12 months, making storage and management hassle-free.
With its characteristics of high efficiency, environmental friendliness, cost-effectiveness, and convenience, SILIT-PPN has become an innovative choice for denim neutralization. Whether it is a large enterprise pursuing green production or a small/medium-sized factory focusing on cost control, SILIT-PPN can inject new impetus into denim processing.


We specialize in the manufacturing and global distribution of premium textile chemicals:
  • Silicone Series: Amino silicone oils, Block silicone polymers, Hydrophilic silicone fluids, and their corresponding emulsion systems
  • Performance Enhancers: Wetting & rubbing fastness improvers, Eco-conscious water repellents (Fluorine-free variants, C6, C8 formulations)
  • Denim Processing Solutions: ABS indigo removal agents, Specialty enzymes, Spandex fiber protectors, Manganese elimination compounds
Global Market Reach: Exported to major textile hubs including India, Pakistan, Bangladesh, Türkiye, Indonesia, Uzbekistan, and adjacent regions.
Detailed technical specifications available upon inquiry


Contact Us ：shanghai Vana Biotech Co., Ltd
📍 Address: Room 203, Building 2, No.1588 Huhang Road, Shanghai, China
🌐 Website:www.vanabio.com 
📱 WhatsApp: Avery +86 15056351624

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