High-performance structures engineered to withstand rigorous autoclave sterilization and high-speed filling lines.
The South Korean food market has witnessed a monumental shift towards HMR (Home Meal Replacement), instant retort meals, and premium ready-to-eat products. Factors such as a growing percentage of single-person households ("Honbap" culture), hyper-fast convenience lifestyles, and a dense network of convenience store franchises (such as GS25, CU, and 7-Eleven) have forced package designers and food processing factories to source advanced packaging films.
Unlike standard flexible packaging, cooking packages destined for the Korean market must endure complex retort sterilization processes (reaching temperatures between 121°C to 135°C under high pressure). They must guarantee an absolute barrier against oxygen transmission (OTR) and water vapor transmission (WVTR) to sustain shelf lives up to 12 months without refrigeration. At the same time, they must meet the ultra-strict safety standards set by the Ministry of Food and Drug Safety (MFDS) of Korea.
Dongfa Printing stands at the intersection of this technology, deploying over 35 years of manufacturing excellence in heavy retort pouch production, automated custom roll film manufacturing, and high-precision fitment/spout integration. By combining state-of-the-art rotogravure presses with high-barrier laminates (using nylon, pet, cast polypropylene, and aluminum foil), we supply the exact functional parameters required by Korean food processors.
Developing cooking pouches capable of handling high temperature cooking requires precise chemical knowledge of multi-layer laminates. Standard laminates delaminate under high temperatures because the thermal expansion coefficients of the film layers differ. Our engineering department uses customized adhesive formulations that maintain structural integrity during retort steam processing.
| Layer Structure | Typical Thickness (µm) | Primary Function | Key Applications (Korean Market) |
|---|---|---|---|
| PET / NY / CPP (Non-Alu) | 80 – 110 | High transparency, microwaveable, puncture resistant | Microwave-ready Tteokbokki, instant rice pouches |
| PET / AL / NY / CPP (Alu-foil barrier) | 90 – 125 | Near-zero OTR & WVTR, light protection | Premium Samgyetang (Ginseng chicken soup), curry stews |
| NY / CPP (High-impact) | 75 – 105 | Extreme flexibility, burst resistance | Frozen dumplings, boiling-in-the-bag sauces |
| NY / EVOH / CPP (Co-extruded) | 85 – 115 | High oxygen barrier without metal foil | Transparent window soups, premium broth bags |
Our cooking packages utilize high-temperature CPP (Cast Polypropylene) as the inner sealant layer. This material features excellent sealing strength, grease resistance, and thermal tolerance. Combined with BOPA (Bi-axially Oriented Polyamide/Nylon) for physical toughness, and high-density print-receptive polyester (PET), we construct pouches that prevent bursting during processing.
To capture market share in Korea, packaging solutions must align with several macro trends:
How we ensure 100% compliance and flawless physical performance for cooking packages shipped to South Korea.
Determination of required sterilization temperature (121°C or 135°C), selection of food-grade solvent-free adhesives, and alignment with FDA & Korean MFDS standards.
High-speed rotogravure printing using food-safe inks, followed by solvent-free thermal lamination to prevent chemical migration under heat.
Extended curing in temperature-controlled rooms (essential for retort-grade adhesives) and 100% inline optical scanning to catch microscopic pinholes.
Answers to critical queries concerning cooking packages, material safety, and custom manufacturing.
Microwaveable cooking packages require structures without metal layers, such as aluminium foil. The industry standard is PET / Nylon / R-CPP (Retort Cast Polypropylene) or structures using transparent vapor-deposited barrier films (like SiOx or AlOx coated PET). These structures prevent sparking in the microwave while providing oxygen barriers that keep food shelf-stable.
Yes. We manufacture specialty retort packaging utilizing specialized high-temperature-grade CPP films and cross-linked polyurethane retort adhesives. These materials maintain their seal and structural bond without delamination during high-temperature sterilization up to 135°C for up to 30 minutes.
We use food-grade resins and raw films from certified chemical suppliers. All adhesives, inks, and substrates undergo migration testing (including overall migration, heavy metals, and residual solvents) to ensure compliance with Korea's Food Sanitation Act and MFDS standards for food contact materials.
Spouted pouches provide high convenience, reduced logistics weight (reducing transport emissions compared to glass or metal cans), and clean pouring. In South Korea, they are widely used for red ginseng extracts, portable porridges (Juk), and ready-to-use bases for soups like Budae Jjigae.
Depending on whether you choose pre-made pouches or roll stock, our typical MOQ for custom rotogravure runs is 10,000 to 20,000 units. We offer options to support scale-up phases for new food products entering the market.
Working alongside reliable food producers and industrial enterprises worldwide.
Select from our certified range of spout bags, sealing cup films, and custom laminates.
Dongfa Printing Co., Ltd. has over 35 years of professional experience in printing and packaging manufacturing. We provide all kinds of packaging, specialize in the development and production of various liquid packaging films and bags, suitable for use in pasteurization and retort steam sterilization processes, as well as different types of spout bags and sealing cup films. Based on our advanced printing machinery equipped with online high-speed quality inspection cameras and our certified GMP workshop, we adhere strictly to high-grade raw material selections, professional production processes, and strict quality controls. We provide superior products and best-in-class service to clients globally.
Since our establishment, Dongfa Printing has committed to providing customers with efficient and high-quality printing services. Our business scope covers the entire cycle from professional structural design and high-precision plate making to rotogravure printing, dry/solvent-free lamination, and final pouch converting/bag-making. Whether you need standard commercial volumes or custom shapes, we fulfill customer needs with our professional engineering expertise and attentive customer support.
Our production facilities are designed for custom flexible packaging catering to food, pharmaceutical, daily chemical, and personal care products. Our production capability encompasses spout bags, retort pouches, center-seal bags, 3-side seal bags, stand-up pouches, quad-seal pouches, flat-bottom bags, zipper bags, and high-speed packaging roll films. By using high-performance substrates and maintaining strict process controls (including regular pull-strength tests, pressure-burst testing, and solvent residue analyses), we guarantee defect-free shipments for every product run.
Our corporate values are "integrity, professionalism, innovation, and win-win." We uphold integrity as our foundation, professionalism as our basis, innovation as our driving force, and strive for win-win outcomes with customers, employees, and society. These values guide our business practices and inspire our team to continuously improve. We welcome you to contact us for technical consultations or to arrange factory audits.
DongFa Printing
