Cheaper Automatic Wax Soaking Production Line For Corrugated Carton
Model :1400x1100
What is a Wax Soaking Machine?
A wax soaking machine is a specialized industrial system designed
to impregnate corrugated cardboard boxes (cartons) with paraffin or
blended wax. Unlike a simple wax coating, the soaking process fully
saturates the corrugated fiber, transforming the cardboard's
properties to create a highly water-resistant and durable
container.
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Purpose and Benefits: Why Wax-Soak Cartons?
Standard corrugated cartons lose their strength quickly when
exposed to moisture. Wax soaking solves this problem, making them
ideal for:
· Wet or Cold Environments: Packaging for fresh produce (fish,
meat, fruits, vegetables), ice, frozen goods, and moist
agricultural products.
· High-Humidity Storage: Preventing box failure in coolers,
freezers, and damp warehouses.
· Liquid Containment: Creating a barrier that prevents leaks from
inside (e.g., from melting ice or product juices) and moisture
ingress from outside.
Key Benefits:
· Superior Wet Strength: The wax reinforces the fibers, allowing
the box to retain over 90% of its strength even when wet.
· Water Resistance: Provides an exceptional barrier against liquid
water, not just humidity.
· Durability: Resists abrasion, scuffing, and crushing better than
standard boxes.
· Stacking Strength: Maintains integrity under heavy loads in
challenging conditions.
How It Works: The Soaking Process
The core principle is to replace the air within the flutes of the
corrugated board with molten wax. The process typically follows
these steps:
1. Preheating (Optional but Recommended): The formed, flat cartons
(blanks) are preheated. This removes any residual moisture and
brings the cardboard up to a temperature close to that of the wax,
which prevents thermal shock and allows for better, faster wax
penetration.
2. Immersion: The carton blanks are conveyed into a bath of molten
wax (typically maintained at 170-200°C / 340-390°F).
3. Dwell Time (Soaking): The cartons are submerged for a precisely
controlled period (usually 2-5 seconds). This is the critical
"soaking" phase where the wax is drawn deep into the paper fibers
by capillary action.
4. Drainage: The wax-saturated cartons exit the bath and are held
at an angle or on a vibrating conveyor to allow excess,
surface-level wax to drain off back into the bath. This step is
crucial to control wax add-on and prevent messy, dripping boxes.
5. Cooling & Setting: The cartons pass through a cooling station,
often using forced air or misting water, to rapidly solidify the
wax both on the surface and within the fibers. This "sets" the box
into its new, rigid, waterproof form.
6. Stacking & Packaging: The finished, hardened boxes are
automatically stacked and prepared for shipment.
