A Guide to Food-Grade Plastic Bags: Types, Safety, and Applications
In the food industry, packaging is more than just a container—it’s a critical tool for preserving freshness, ensuring safety, and enhancing brand appeal. Among packaging materials, food-grade plastic bags stand out for their versatility and functionality. Let’s explore the common types of food-safe plastic bags and their unique advantages.

1. Polyethylene (PE) Bags
Features: PE bags, including high-density polyethylene (HDPE) and low-density polyethylene (LDPE), are widely used due to their excellent moisture resistance, flexibility, and heat tolerance (up to 120°C for HDPE).

Applications: Ideal for packaging baked goods, snacks, and frozen foods. Transparent PE bags with octa-seal technology ensure airtight protection while showcasing product quality.

Safety: Food-grade PE is non-toxic and complies with safety standards, making it suitable for direct contact with hot foods like steamed buns or soups.

2. Polypropylene (PP) Bags
Features: PP bags offer high clarity, durability, and microwave-safe properties (up to 90°C). They are often used for reheating pre-packaged meals.

Applications: Common in deli counters and ready-to-eat meal packaging.

3. Vacuum-Sealed Bags
Features: Made from multi-layer composites (e.g., PE and nylon), these bags extend shelf life by removing air and preventing oxidation.

Applications: Perfect for meats, cheeses, and perishable items.

4. Biodegradable/Compostable Bags
Features: Made from plant-based materials like PLA, these eco-friendly bags decompose naturally, addressing environmental concerns.

Applications: Used by brands prioritizing sustainability.

Safety Considerations
Certification Matters: Always verify “food contact safe” labels and manufacturer credentials. Non-certified bags may contain harmful additives like phthalates or heavy metals.

Avoid High-Risk Use: While food-grade PE is safe for hot foods, avoid microwaving non-PP bags or using low-quality PVC bags, which can leach toxins.

Zhengzhou Midao Packaging Design: Crafting Excellence in Food Packaging
When it comes to innovative and safe packaging solutions, Zhengzhou Midao Packaging Design Co., Ltd. stands as a leader in the industry. Established in 2016, this dynamic company specializes in:

1. Customized Food Packaging Design
Expertise: From PE bread bags with transparent windows to biodegradable pouches, Midao combines aesthetics with functionality. Their designs emphasize brand storytelling through color, typography, and structural innovation.

Technology: Utilizing advanced techniques like octa-seal technology, they ensure airtight freshness and durability for products like artisanal bread and pastries.

2. Comprehensive Services
Range: Services include brand VI design, promotional material printing, and eco-friendly packaging solutions for industries like beverages, tea, and baked goods.

Client Portfolio: Trusted by major brands such as Shede Liquor and China Agricultural Resources, Midao’s designs are market-tested and consumer-approved.

3. Sustainability Focus
Eco-Friendly Options: Midao offers recyclable and compostable packaging materials, aligning with global trends toward greener practices.

Why Choose Midao?
Proven Track Record: With over 7 years of experience, their team of designers and marketing experts delivers SEO-optimized packaging solutions that enhance online visibility.

Customer-Centric Approach: Bridging creativity and practicality, Midao ensures designs resonate with both retailers and eco-conscious consumers.