Tuna Three-Side Seal Bags – High Sealing Performance

Premium Food-Grade Tuna Three-Side Seal Bags – High Sealing Performance, Eco-friendly materials, low MOQ, and full customization. Protect freshness & boost branding. Get a free quote & design review!

Material: Custom Material.

Scope Of Application: Food,Fish Food，Pet Treat,Cookies,,ETC.

Product Thickness: Custom Thickness.

Size: Custom Size

Surface: 1-12 Colors Custom Printing

Sample: Free

Production base: China,Thailand,Vietnam

Delivery Time: 10 ~ 15 Days

Delivery Method: Express / Air / Sea

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1. Tuna Three-Side Seal Bags - High Sealing Performance -OK Packaging

Tuna Three-Side Seal Bags - High Sealing Performance (5)

As a leading manufacturer of Custom Tuna Three-Side Seal Bags - High Sealing Performance, Dongguan Ok Packaging Co., Ltd. specializes in high-performance premium Three-Side Seal Pouch for Food.

We control the entire production process ( one-stop factory: from raw film to complete finished Tuna Three-Side Seal Bags)

Our core strengths lie in stable bulk supply, on-time delivery, a professional customization team, and extensive global export experience—all tailored to meet the high standards of large wholesalers, manufacturers, and brand owners in the fish food industry.

We offer one-stop service for large orders, covering the entire procurement cycle. In the pre-sales stage, our professional team will provide customized solutions based on your specific needs, including fish feed type, packaging volume, and export destination requirements. During production, we utilize advanced gravure and digital printing equipment to ensure consistently high quality, even in large-scale production. For after-sales service, we provide comprehensive support: real-time logistics tracking, 24-hour quality feedback response, and targeted solutions for transportation or packaging-related issues, ensuring a smooth collaborative experience.

We have three production bases: Dongguan, China; Bangkok, Thailand; and Ho Chi Minh City, Vietnam, ensuring superior quality, competitive prices, a superior global service chain, and seamless integration from your concept to the final packaged product.

2.Why Choose Dongguan OK Packaging as Your Tuna Three-Side Seal Bags Supplier?

2.1 Reliable Manufacturer:

With 20 years of experience in packaging production, we are a one-stop factory. From raw materials to finished products such as bags, nozzles, and valves, we have our own factories. We are a strong company with no middlemen, offering factory prices and visible guarantees. Moreover, we are not just aiming to be an excellent supplier. Our philosophy is to serve our customers well, fight alongside them, become partners in growth, and achieve mutual success.

2.2 High-quality products:

Transparent customization process with strict procedures, full QC testing, experimental videos, outgoing inspection reports, product testing certificates, sample customization, prototyping, and full tracking of sample testing, committed to providing the highest quality products.

2.3 Customization capabilities:

Digital printing or gravure printing are available. Whether you are producing in bulk or in small quantities, you can perfectly customize your products. Full personalization is possible, including bag type, material thickness, size, design, valve, zipper, and quantity.

3. Core Advantages：Tuna Three-Side Seal Bags

3.1 Airtight Three-Side Heat Sealing for Maximum Freshness Retention

We adopt advanced three-side heat-sealing technology to create a hermetic seal, effectively blocking oxygen, moisture and light. The aluminum foil lamination enhances oxidation resistance and UV protection, slowing down vitamin degradation in fish food. The reusable zipper closure maintains tightness after repeated openings, resolving the freshness issue of partially used 1kg fish food. All sealing processes undergo rigorous testing with professional equipment to ensure zero leakage during transportation and storage.

3.2 Food-Grade Laminated Materials & Safety Certifications

Our Three-Side Seal Pouches are crafted from food-grade PET/AL/PE composite materials, which are non-toxic, odorless and free of harmful substances. The materials meet international food contact safety standards and hold ISO 9001 certification superscript:3:. Ideal for packaging oily and acidic fish food, they offer excellent oil resistance and corrosion resistance. Additionally, the materials are low-temperature tolerant, adapting to various storage environments to ensure product safety and stability.

3.3 Customized Sizing & Design for Food

Specifically designed for small packages of tuna or other seafood (fully customizable), these convenient and portable containers feature a thickened material design, high-definition printing, and the ability to customize your own designs for easy advertising and brand awareness enhancement, while ensuring the freshness of the contents. Equipped with an easy-tear opening for convenient opening and enhanced usability.

3.4 High-Quality Gravure Printing for Brand Enhancement

We utilize advanced gravure printing technology to provide high-definition 1-10 color printing services. The pouch surface features ample printing space for brand logos, product information, feeding instructions and other content. Customers can choose between gloss or matte finishes based on their brand positioning, enhancing packaging texture and brand differentiation. The printing inks are eco-friendly and non-toxic, complying with international environmental standards.

4.Customization Solutions

We offer comprehensive specification customization services to meet the diverse, high-volume purchasing needs of the food industry. Our production capacity ranges from 100 grams to 25 kilograms, covering specifications for various ornamental foods, sauces, and dog food.

We offer standard size references for quick selection, and we also support size adjustments and customization as needed. Thanks to our mature manufacturing processes, OK Packaging ensures accuracy even for large-volume custom sizes, guaranteeing consistent quality for every product.

Material Customization

Our material and printing process customization solutions can be tailored to the quality and brand requirements of B2B clients. Regarding materials, we offer a comprehensive selection:

We can tailor exclusive solutions for materials and printing processes according to the quality standards and brand positioning of B2B clients.

We offer a wide range of material options, including food-grade composite materials, special retort-grade materials (compatible with retort pouches), eco-friendly recyclable materials and high-barrier materials, which can be flexibly combined based on clients' product characteristics, certification requirements and cost budgets.

For high-temperature sterilized products (such as retort food bags), we exclusively provide special materials that can withstand high temperatures up to 121℃. After sterilization, they maintain their shape with intact sealing and excellent barrier properties, effectively locking in the original flavor of the products. For clients in the food and pet food industries, all materials meet food-grade standards with no off-odors or harmful components, fully complying with food packaging safety regulations worldwide. We can also provide complete material test reports and relevant certification documents.

For clients focusing on environmental protection, we offer GRS-certified recyclable and degradable single materials to help them implement green packaging strategies and enhance their brand's environmental image. For oily and leak-prone products, we incorporate high-barrier EVOH-layer materials to effectively improve leak-proof and penetration-resistant performance, significantly reducing potential losses during product storage and transportation.

In addition, the thickness, hardness and transparency of the materials can be customized on demand. Clients can choose transparent materials to display the original appearance of products or light-shielding materials to protect product quality. Meanwhile, we provide material sample testing services, recommending cost-effective adaptation plans based on clients' actual needs to ensure that the material quality is highly aligned with their core requirements.

In printing, we support 1-10 color gravure printing, achieving high-definition and consistent color reproduction to bring your brand designs to life. We also offer matte or glossy lamination options to enhance the packaging's texture. All printing inks comply with international food contact safety standards such as REACH and RoHS.

Additional Features

To enhance the value of your products, we offer a range of customized additional features for large orders.

Practical features include:

Easy-tear laser-etched lines
Convenient European-style hanging holes
Vent valves and custom zippers specifically designed prevent bag inflation.

For security and brand protection, we provide anti-counterfeiting labels and traceable QR codes. All customized features meet international certification requirements, including FDA, BRC, and ISO 9001, ensuring smooth export to global markets.

Our product certifications by RGS SEXDE FDA, EU 10/2011, and BPI—ensuring safety for food contact and compliance with global eco-standards.

5.How to Order Tuna Three-Side Seal Bags？

Step 1: Define Your Specifications

Size: We produce bags in sizes from 1 ounce to 5 pounds.

Material Structure & Thickness: A variety of composite materials are available to meet different barrier performance requirements.

Valves & Zippers& Window: Choose the type and size of valves and zippers suitable for your product.

Surface Finish: Matte, glossy, or metallic.

Contents: The specific items packaged.

Design Files: AI, PDF.

Quantity: Large or small quantities.

Step 2: Submit your design draft for free review.

Our team offers a free printability review before printing to ensure your design files are perfectly suited for production and avoid costly mistakes.

Step 3: Production of bag prototype samples and mass production

We deliver accurate prototypes for your approval before moving to a mass production run managed under strict ISO-quality standards.

6.FAQs

Q1:What types of tuna are suitable for this three-side seal bag?

A1: This three-side seal bag is specially designed for tuna products, suitable for all common forms including canned tuna (drained), fresh frozen tuna chunks, tuna fillets, tuna paste and seasoned tuna. It is compatible with both oily and low-oil tuna, effectively isolating oil and moisture to avoid leakage.

Q2: How long can the moisture-proof performance of the bags last for bulk storage?

A2: The moisture-proof performance depends on the selected material. For standard BOPP/PE composite bags, the moisture-proof effect can maintain product freshness for 6–12 months under normal storage conditions. For high-barrier aluminum foil composite bags, the shelf life can be extended to 12–24 months, fully meeting the long-term bulk storage needs of fish food.

Q3:Can the bag be used for high-temperature sterilized tuna products?

A3: Yes. The bag is made of high-temperature resistant food-grade composite material, which can withstand high-temperature sterilization (121℃) and retort processing, fully meeting the production and packaging requirements of sterilized tuna products, without deformation or sealing failure after sterilization.

Q4: What is the MOQ for bulk customization, and can the delivery time be shortened for urgent large orders?

A4: Our standard MOQ for customized flat bottom bags with windows is 10,000 pieces. For urgent large orders, we can prioritize production resources to shorten the delivery time—typically reducing it by 3–5 days based on the order quantity and customization complexity. Please contact our sales team in advance to confirm the feasibility.

Q5: What payment methods and international trade terms do you support?

A5: We support flexible payment methods for large orders, including T/T (Telegraphic Transfer), L/C (Letter of Credit), and D/P (Document against Payment). In terms of international trade, we offer FOB, CIF, and EXW terms to accommodate your logistics and customs clearance needs, ensuring smooth cross-border transactions.

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