Release date:2023-12-01
Causes and prevention of dry sandpaper manufacturing waste
Causes and prevention of dry sandpaper manufacturing waste
Release Date：2023-09-21 15:56
Dry sandpaper plays a pivotal role in various industries, especially in tasks requiring precision and finesse. However, the quality of dry sandpaper can sometimes be compromised in the manufacturing process due to a variety of factors. In this article, we will thoroughly explore the causes behind the wastage during dry sandpaper production and discuss effective prevention methods.
1. Coarse Grains
Causes:
- Presence of large particles in the abrasive.
- Inadequate cleaning of the sand container and abrasive transportation devices.
Prevention:
- Store abrasives according to their particle size.
- Ensure thorough cleaning of residual abrasive.
2. Aggregation of Abrasive Material
Causes:
- Impurities and cotton debris on the cotton fabric.
- Impurities in the adhesive.
- Undissolved adhesive particles.
- Aggregation of abrasive material due to moisture.
- Excessive thickness of the base adhesive.
Prevention:
- Improve the quality of cotton fabric.
- Sieve the adhesive solution.
- Ensure abrasives are thoroughly dry.
- Maintain the appropriate thickness of the base adhesive.
3. Starch Stains
Causes:
- Impurities in the starch solution, undissolved particles.
- Formation of starch skin.
Prevention:
- Control the quality of raw materials and starch solution.
- Use a cold starch solution.
4. Edge Curling
Causes:
- Tight edges of the fabric.
- Excessive tension.
- Uneven drying.
Prevention:
- Enhance the quality of cotton fabric.
- Ensure uniform tension.
- Control drying temperature and humidity.
5. Adhesive Stains
Causes:
- Impurities in the adhesive.
- Incomplete dissolution of the adhesive.
- Uneven adhesive application.
Prevention:
- Improve the quality of the adhesive.
- Pay attention to adhesive temperature and thickness during application.
6. Insufficient Abrasive
Causes:
- Insufficient adhesive.
- Starch stains.
- Collision damage.
- Cotton debris or broken yarn.
- Insufficient application of abrasive.
- Adhesive roller and scraper contaminated with foreign substances.
Prevention:
- Improve the quality of cotton fabric.
- Avoid starch stains.
- Keep adhesive roller and scraper clean.
- Ensure even and adequate application of abrasive.
7. Adhesive Edges on the Back
Causes:
- Misalignment of the substrate during adhesive application.
Prevention:
- Ensure straight movement of the substrate.
8. Wrinkling
Causes:
- Fabric joints not aligned.
- Uneven tension.
- Uneven pressure from the calendar.
- Uneven drying.
- Inconsistent winding tension.
Prevention:
- Align fabric joints properly.
- Maintain even tension.
- Apply uniform pressure.
- Ensure even and appropriate drying.
- Wind the fabric tightly and neatly.
9. Adhesive Penetration
Causes:
- Thin starch application.
- Dilute starch solution.
- Insufficient drying after starch application.
- Thin fabric.
- Low viscosity of the base adhesive.
Prevention:
- Control the quality of starch application and starch solution.
- Enhance the quality of cotton fabric.
- Maintain moderate viscosity of the base adhesive.
- Reduce speed appropriately.
10. Irregular Patterns
Causes:
- Uneven application of abrasive.
- Inadequate pre-drying, leading to severe abrasive loss during winding or double adhesion.
- Uneven adhesive application.
Prevention:
- Apply abrasive evenly and ensure the spreading roller is clean.
- Ensure proper pre-drying.
- Apply adhesive with uniform and moderate thickness.
By understanding these causes and implementing effective prevention methods, manufacturers can significantly reduce waste in dry sandpaper production, resulting in higher-quality products.
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