Tailored Solutions for Industrial and Food-Grade Applications
Calcium carbonate is one of the most commonly used mineral fillers and additives across various industries, including plastics, coatings, construction, paper, animal feed, and food. While it may seem like a simple powder, the choice of packaging has a major impact on product safety, supply chain efficiency, and customer satisfaction.
At Zhixin Packaging, we specialize in providing optimized bagging solutions for both industrial-grade and food-grade calcium carbonate. This article explains the key differences in packaging needs and highlights proven solutions we’ve delivered for leading manufacturers.
1. What Makes Calcium Carbonate Difficult to Pack?
Despite being chemically stable, calcium carbonate is:
High in density (heavier than average powders)
Fine and dusty, prone to leakage if not sealed properly
Moisture-sensitive, especially in food-grade form
Commonly packed in 25kg–50kg quantities, requiring strong, stackable bags
A proper packaging bag must therefore be strong, moisture-proof, dust-tight, and easy to handle, while meeting any regulatory requirements for food or pharma grades.
2. Packaging Options for Industrial-Grade Calcium Carbonate
For industrial use (in plastics, paint, etc.), cost efficiency and durability are key. Recommended packaging types include:
✅ PP Woven Bags
Economical and strong
Can be laminated or combined with PE liners
Suitable for 25–50kg powder packing
✅ Valve Bags (Paper-Plastic Composite)
Ideal for automated filling lines
Fast filling, tight sealing, reduced spillage
Customizable with anti-slip surfaces and venting
✅ Kraft Paper Bags (Multi-Ply)
Often used for export or eco-conscious buyers
Optional PE liner for moisture protection
Clean appearance, good printability
✅ FIBC Bulk Bags (Ton Bags)
For 500kg–1000kg bulk transport
Available with inner liners and discharge spouts
Cost-effective for large-volume distribution
3. Food-Grade Calcium Carbonate Requires Extra Care
Food-grade calcium carbonate (used in nutritional supplements, food additives, baking powder, etc.) demands stringent packaging hygiene and barrier protection. A typical structure includes:
Outer bag (woven or kraft paper)
Inner PE liner (food-grade, sealed)
Key Requirements:
Use of certified food-contact materials
Moisture-proof, odorless PE liners
Cleanroom-grade production environment
Heat sealing with pressure at the liner bottom to prevent tearing
Support for traceability (date codes, batch info)
4. The Importance of Proper Liner Sealing
In food factories, downstream clients often remove the PE liner for direct use with automatic feeding systems. If the liner bottom is poorly sealed, pulling it out can easily cause a tear or powder leakage, leading to:
Material waste
Dust contamination
Customer complaints
At Zhixin Packaging, we solve this with Heat Sealing with Pressure (also known as bottom welding), using precise temperature and air pressure to fuse the PE liner’s bottom tightly. This results in:
Stronger, leak-proof bottom seams
Better resistance to tension and pulling
Improved downstream handling experience
5. Real Cases: Solving Problems for Leading Producers
We’ve successfully helped multiple major food-grade calcium carbonate producers in China improve their packaging performance. Notable clients include:
Xinjiang Zhongshan Tianxi Co., Ltd.
Hubei Tongji Furui Calcium Resources Co., Ltd.
Problem: Their previous liners used ordinary hot sealing, which often tore when customers removed the bags for feeding.
Our Solution: We replaced them with bottom air-pressure heat-sealed liners, significantly reducing breakage and customer complaints, while enhancing packaging cleanliness and reliability.
6. Why Choose Zhixin Packaging?
At Zhixin Packaging, we bring years of experience in bulk powder packaging with a strong focus on product integrity, regulatory compliance, and user experience.
We offer:
✔ Custom-designed packaging for calcium carbonate
✔ Food-grade certified PE liners with reinforced sealing
✔ Advanced welding techniques to prevent liner failures
✔ Cleanroom production options for high-purity applications
✔ Printing & branding support for global export
✔ Flexible MOQ, fast lead times, and technical support
7. Ready to Improve Your Packaging?
Whether you’re producing industrial or food-grade calcium carbonate, the right bag makes all the difference. Let Zhixin Packaging help you avoid packaging failures and build a more reliable, professional image in your market.
📍 Visit us: www.smartpackbags.com
📧 Email: rain.xu@smartpackbags.com
📱 WhatsApp: +86 157 2804 1867
Let’s make your packaging smarter—inside and out.