Rundongyang Packaging Products Co., Ltd
Below is a video overview of bags for food packaging by Rundongyang, watch it carefully to learn types, sizes, features, and how them work!
At Rundongyang, we understand that food packaging is paramount for product safety, freshness, and brand appeal. That's why we offer an extensive range of food packaging bags, fully customizable to meet your unique needs. Whether you require specific styles like stand-up pouches, flat bottom bags, or three-side seal pouches, or demand particular sizes and colors, we provide expert wholesale and custom manufacturing. Our solutions are designed to protect your edibles with high-barrier films, ensuring extended shelf life and vibrant branding through high-quality printing. Choose Rundongyang for packaging that perfectly preserves your food and captures consumer attention.
The effectiveness of food packaging hinges on its construction, beginning with the materials. At Rundongyang, we utilize a range of food-grade materials specifically chosen for their barrier properties and safety. Common options include various types of Polyethylene (PE) like LDPE (Low-Density Polyethylene) for flexibility and moisture resistance, HDPE (High-Density Polyethylene) for rigidity and durability, and LLDPE (Linear Low-Density Polyethylene) offering a balance of both. Polypropylene (PP) is favored for its clarity, heat resistance (ideal for microwaveable items), and stiffness. For enhanced protection, we frequently employ multi-layer laminates which combine materials like PET (Polyester) for strength and printability, Nylon for puncture resistance, and Aluminum Foil for an absolute barrier against light, oxygen, and moisture, crucial for sensitive products. Kraft paper-based laminates offer an eco-friendly aesthetic while maintaining necessary barriers.
Barrier Properties: The most critical function is to create a barrier against external elements like oxygen, moisture vapor, light, and contaminants. This prevents oxidation, microbial growth, and loss of aroma or moisture, thereby extending shelf life.
Seal Integrity: Strong, airtight seals (often achieved through heat sealing) prevent leakage and maintain the integrity of the barrier, ensuring no external factors compromise the product.
Vacuum Sealing: For highly perishable items, materials like Nylon are excellent for vacuum pouches, removing air to inhibit aerobic bacteria and prevent freezer burn.
Physical Protection: Durable materials and multi-layer structures protect food from physical damage during handling, shipping, and storage.
Stand-Up Pouches (Doypacks): Versatile and popular for their shelf presence, ideal for snacks, coffee, liquids, and pet food.
Three-Side Seal Bags/Flat Pouches: Simple, economical, and space-efficient, commonly used for single servings, sauces, or smaller dry goods.
Side Gusset Bags: Offer increased volume, perfect for bulkier items like coffee beans or grains.
Flat Bottom Bags (Box Pouches): Provide excellent stability and maximize fill volume, offering a premium, box-like appearance for high-end products.
Spout Pouches: Equipped with an integrated spout and cap, essential for liquids, purees, and viscous products, offering controlled dispensing and resealability.
Retort Pouches: Designed to withstand high-temperature sterilization, enabling shelf-stable ready-to-eat meals without refrigeration.
Vacuum Pouches: Used with vacuum sealing for extended freshness of meats, cheeses, and other perishables.
Size & Shape: Tailored dimensions and unique die-cut shapes to perfectly fit your product and brand aesthetic.
Material Composition: Customized laminate structures (e.g., specific film layers and thicknesses like 50-micron PP/PE or 12-micron PET/7-micron AL/70-micron PE) to achieve precise barrier properties for your product's shelf life requirements.
Printing & Graphics: High-quality gravure or flexographic printing with custom colors (CMYK, Pantone), matte or gloss finishes, and metallic effects for vibrant branding and product information. Options for clear windows to display the product.
Closure & Features: Integration of various resealable zippers (standard, slider), tear notches for easy opening, degassing valves for coffee, and spouts for liquids.
Handles & Pouches: Addition of handles for larger bags or specific pouch designs like corner spouts.
| Food Category | Common Products | Packaging Bag Type | Key Features |
|---|---|---|---|
| Snack Foods | Potato chips, popcorn, pretzels, trail mix, granola bars, cookies, jerky | Foil bags, laminated pouches | Moisture-proof, resealable, strong aroma barrier, cushion for fragile items |
| Frozen Foods | Frozen vegetables, fruits, seafood, poultry, ready meals, French fries | PE bags, multi-layer films | Cold-resistant, anti-frost, heat-sealable, durable |
| Powdered & Granular Goods | Ground coffee, tea, spices, flour, sugar, protein powder, baking mixes | Stand-up pouches, zipper bags, foil bags | Oxygen and moisture barrier, resealable, tear notch |
| Grains, Legumes & Pasta | Rice, beans, lentils, quinoa, oats, dried pasta | Woven bags, vacuum bags, PE bags | Durable, pest-resistant, moisture-proof |
| Liquid & Semi-Liquid Foods | Juices, smoothies, yogurt, sauces, soups, wine | Spouted pouches, stand-up pouches | Leak-proof, squeezable, convenient dispensing |
| Confectionery | Gummies, hard candies, chocolate, lollipops | Printed stand-up pouches, transparent bags | Eye-catching design, freshness protection, resealable |
| Pet Food | Dry dog/cat food, pet treats | Large composite bags, zipper pouches | Odor-proof, high-strength, resealable, long shelf life |
| Fresh Produce | Salad greens, mini carrots, berries, herbs | Perforated PE bags, breathable film bags | Freshness retention, water-resistant, breathable |
| Ready-to-Eat Meals | Pre-cooked rice, stews, curries, canned tuna | Retort pouches, vacuum pouches | Heat-resistant, long shelf life, compact storage |
| Dairy & Cheese | Shredded cheese, cheese blocks, processed slices | Vacuum-sealed bags, inner wrap bags | Airtight, extends shelf life, tamper-evident |
What did our happy clients say?
Exceptional Barrier for Freshness!
We were particularly impressed by Rundongyang's stand-up pouches for coffee. Their use of a PET/AL/PE laminate with a precise 7-micron aluminum foil layer demonstrated an unparalleled oxygen and light barrier, critical for preserving our premium beans. This level of material engineering is truly outstanding.
Unwavering Commitment to Safety!
Rundongyang's dedication to food safety is clear in their baby food spout pouches. Choosing BPA-Free LLDPE at a robust 90-micron thickness assures us of a safe and inert package for our most vulnerable consumers. It's a testament to their ethical manufacturing practices.
Revolutionizing Shelf-Stable Meals!
"The performance of Rundongyang's PA/RCPP laminated retort pouches has transformed our ready-meal production. Their ability to withstand 121°C sterilization for 30 minutes means we can offer truly shelf-stable products, expanding our distribution without compromising quality.
Tailored Solutions for Unique Products!
Rundongyang skillfully designed our dried fruit flat bottom bags. By integrating a custom Kraft paper/PET/PE multi-layer structure, they've achieved optimal moisture control and visual appeal. This bespoke approach to packaging is why we continue to partner with them.