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


- Presence of large particles in the abrasive.

- Inadequate cleaning of the sand container and abrasive transportation devices.


- Store abrasives according to their particle size.

- Ensure thorough cleaning of residual abrasive.

2. Aggregation of Abrasive Material


- 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.


- 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


- Impurities in the starch solution, undissolved particles.

- Formation of starch skin.


- Control the quality of raw materials and starch solution.

- Use a cold starch solution.

4. Edge Curling


- Tight edges of the fabric.

- Excessive tension.

- Uneven drying.


- Enhance the quality of cotton fabric.

- Ensure uniform tension.

- Control drying temperature and humidity.

5. Adhesive Stains


- Impurities in the adhesive.

- Incomplete dissolution of the adhesive.

- Uneven adhesive application.


- Improve the quality of the adhesive.

- Pay attention to adhesive temperature and thickness during application.


6. Insufficient Abrasive


- Insufficient adhesive.

- Starch stains.

- Collision damage.

- Cotton debris or broken yarn.

- Insufficient application of abrasive.

- Adhesive roller and scraper contaminated with foreign substances.


- 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


- Misalignment of the substrate during adhesive application.


- Ensure straight movement of the substrate.

8. Wrinkling


- Fabric joints not aligned.

- Uneven tension.

- Uneven pressure from the calendar.

- Uneven drying.

- Inconsistent winding tension.


- Align fabric joints properly.

- Maintain even tension.

- Apply uniform pressure.

- Ensure even and appropriate drying.

- Wind the fabric tightly and neatly.

9. Adhesive Penetration


- Thin starch application.

- Dilute starch solution.

- Insufficient drying after starch application.

- Thin fabric.

- Low viscosity of the base adhesive.


- 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


- Uneven application of abrasive.

- Inadequate pre-drying, leading to severe abrasive loss during winding or double adhesion.

- Uneven adhesive application.


- 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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