Chemical-Free Drying Solution for Export Rattan & Sedge by DeAir

Chemical-Free Drying Solution for Export Rattan & Sedge by DeAir

Vietnam is a country with a long-standing tradition in handicrafts, particularly rattan, bamboo, and woven sedge products. However, when expanding to demanding markets such as the EU or the US, enterprises face increasingly strict technical barriers, especially standards regarding chemical residues and product quality.

1. The Nightmare of "Blue and White Mold" and the Ban on Chemicals

Due to their strong hygroscopic biological characteristics, rattan, bamboo, and sedge are highly prone to blue and white mold. This issue becomes particularly severe during the humid season in Northern Vietnam or when cargo experiences "container rain" during long export sea voyages to the West.

In the past, many workshops used chemical treatments (such as sulfur or SO2) to prevent mold. However, according to the regulations of the European Union (EU) and the US, the use of toxic chemicals is strictly prohibited. Goods found with chemical residues face the risk of being returned or destroyed at the port, causing billions of VND in losses and damaging the reputation of Vietnamese brands.

2. Why Are Traditional Drying Methods Obsolete?

• Natural Sun Drying: Heavily dependent on the weather. Natural sunlight only dries the surface, failing to extract moisture from the very core of the rattan or bamboo fibers. Once packaged, the hidden moisture escapes, causing mold.
• High-Heat Drying (Coal, Electric Resistance): Excessively high temperatures and uncontrolled discharge humidity cause sudden dehydration in the fibers. Consequently, products are scorched, discolored, and the materials become brittle, breaking easily and losing their shape during the weaving process.

3. DeAir's Solution: Daxwell Heat-Pump Dryer

To solve this complex problem, DeAir introduces a 100% physical drying technology, completely eliminating chemicals with the Daxwell Heat-Pump Dryer.

Outstanding advantages that make Daxwell conquer the handicraft industry:

• Golden Temperature Range of 25 - 80°C: Flexibly adjustable to suit the characteristics of each material. The mild temperature combined with circulating dehumidification helps extract moisture thoroughly from deep within the core without causing thermal shock.
• Smart HMI Control System: Allows programming of multi-stage drying cycles (e.g., cold drying to retain color, heat drying to extract moisture). Optimizes the automatic moisture discharge process.
• Perfect Quality Preservation: Maintains a bright, natural color. The structure of rattan and sedge fibers retains ideal flexibility, avoiding brittleness and breakage.

4. Infographic: Comparison of Drying Technologies

5. Case Study: "Doi Moi Rattan" Reaching the Global Market

Doi Moi Rattan Cooperative once faced the risk of bankruptcy when a large shipment to Europe was returned due to mold and the detection of chemical residues. Technological transformation was their only path to survival.

After consulting with DeAir's engineering team, Doi Moi Cooperative invested in a closed Panel drying room integrated with the Daxwell Heat-Pump system. The results exceeded expectations:

• Mold rate reduced to 0%: Eliminating the risk of damage during storage and long sea voyages.
• 100% of shipments cleared customs: Absolutely no anti-mold chemicals used, confidently meeting the strictest standards of the European market.
• Cost optimization: The automated drying cycle via the HMI screen significantly saves electricity and reduces the need for night-shift labor to rotate the batches.

6. Frequently Asked Questions (FAQs)