1. Do Food Filling Machine Materials Need to Be Food-Grade?

Yes, food filling machine materials must comply with food safety regulations.

However, a professional food filling machine is not entirely made of food-grade materials. Only the parts that come into contact with the product must use food-grade materials and be paired with food-grade sealing components (such as PTFE and silicone), while also complying with hygienic design principles.
In industries such as food, beverage, and nutraceuticals, filling equipment is typically divided into:
• Product-contact parts
• Non-contact structural parts
These two categories follow different material standards and regulatory requirements.
The most commonly used materials are:
• SUS304 stainless steel → suitable for general food products
• SUS316L stainless steel → suitable for high-salt or highly acidic products (e.g., soy sauce, vinegar), offering stronger corrosion resistance.

2. What Is Food-Grade ? Which Components Must Meet Food-Grade Standards?

According to food safety regulations (such as FDA and EU food contact material standards), any surface that may directly or indirectly contact food is considered a food contact surface and must meet the following requirements:
• Must not release harmful substances
• Must not chemically react with food
• Smooth surface and easy to clean
• Resistant to cleaning processes
• Not prone to contamination buildup

A. Product-Contact Components (Must Be Food-Grade)
Recommended food-grade materials:
1. SUS304 stainless steel
Suitable for drinking water, juice, and edible oils
2. SUS316L stainless steel
Suitable for soy sauce, vinegar, high-salt sauces, and acidic liquids
Typical food-contact components include:
• Product tanks / hoppers
• Filling nozzles
• Tubing and pipelines
• Hoses, gaskets, O-rings, and sealing components

B. Non-Contact Components
Non-contact parts are not legally required to be food-grade, but they must still comply with hygienic and safety design principles.
These typically include:
• Machine frame
• Protective covers
• Motors and drive systems
• Electrical control panels
• External fasteners

Although they do not directly contact the product, they must:
• Be easy to clean and maintain
• Not contaminate the product

3. Key Differences Between SUS304 and SUS316L in Food Filling Applications

4. Three Key Considerations When Purchasing a Food-Grade Filling Machine

Material selection alone is not enough—machine design is equally critical.Even stainless steel equipment can pose contamination risks if the structural design is poor. To comply with GMP standards, a high-quality food filling machine should meet the following requirements:

1) No Dead Zones & Smooth Surfaces
Professional filling machines must avoid dead corners. Smooth surfaces reduce residue buildup and ensure product cleanliness.

2) Easy Disassembly & Cleaning
Product-contact components should be easy to disassemble for cleaning or support CIP systems.

3) Compliance with GMP & Food Hygiene Standards
The machine must be designed to meet strict hygienic and regulatory requirements.

5. Why Neostarpack Is Your Trusted Choice for Food Filling Machines？

With years of expertise in filling machine manufacturing, Neostarpack understands that food safety is not just about materials—it reflects engineering excellence.

Neostarpack Advantages
• Customized material configuration
Tailored material selection based on your product’s pH value and physical properties (SUS304 to SUS316L)
• Strict hygienic design
Easy-to-clean structure that reduces downtime during product changeovers
• Comprehensive technical support
Provides material certification documents to help your production line pass food safety audits

Need a Food-Grade Filling Line Solution?

Neostarpack provides free consultation and full-line planning for various applications, including:
• Liquid products
• Sauces
• Syrups
• Nutraceutical beverages

We offer:
• Food-grade filling machines
• Customized material configurations
• Complete production line integration

📩[Contact us] : info@neostarpack.com

🔗Further Reading :

Which Filling Machine Is Best for Syrups and High-Viscosity Products?

Do Liquids Need Filtration Before Filling?