Browse our core engineered barrier films and pre-formed pouch options designed for high-speed filling lines and extreme temperature tolerances.
Roasted coffee is a dynamic biological product. Post-roasting, coffee beans release significant volumes of carbon dioxide (CO2) while remaining highly sensitive to ambient oxygen (O2), relative humidity (RH), and ultraviolet radiation. The challenge for commercial coffee packaging is twofold: permitting the harmless escape of pressurized CO2 gases without exploding the packaging, while completely preventing the ingress of oxygen, which triggers the rancidification of delicate volatile oils (such as cafestol and kahweol).
Globally, commercial roasters and food service companies seek heat-sealed bags with precision one-way degassing valves. Our high-barrier multilayer laminates—utilizing combinations of polyethylene terephthalate (PET), aluminum foil (AL), and linear low-density polyethylene (LLDPE)—provide an absolute gas barrier. With an Oxygen Transmission Rate (OTR) of less than 0.1 cc/m²/24hr, our materials ensure that fresh coffee profiles survive oceanic transit, long-term warehouse storage, and retail shelf-display windows without degradation.
Aligning packaging structures with specific supply chain segments, retail conditions, and shelf-life expectations.
Optimized for premium micro-lot coffees requiring long-term flavor retention. Employs internal Swiss-built degassing valves and premium foil-lined materials to lock in distinct tasting notes.
Industrial bags ranging from 1kg to 5kg, featuring custom flat-bottom geometries to maximize volumetric efficiency. Built with puncture-resistant nylon layers (PA) to survive shipping vibrations.
Compatible with high-speed form-fill-seal (FFS) lines. Designed to meet modern green initiatives using recyclable EVOH-PE structures that match traditional PET/AL/PE barrier specs.
We combine multiple functional substrates (PET, BOPP, AL, NY, CPP, LLDPE) using state-of-the-art lamination lines. This prevents delamination under vacuum packing and gas flushing pressures.
Engineered seal layers ensure high seal strength (ASTM F88 values >30 N/15mm) within a wide processing temperature window, preventing burn-throughs and channel leaks on high-speed lines.
All packaging components are manufactured in Class 100,000 cleanrooms under strict GMP protocol. We hold full FDA, EU food-contact, and ISO certifications for worry-free global logistics.
Our rotogravure printing presses and slitting machines are equipped with high-speed digital optical scanners. These systems scan 100% of the moving web, flagging micro-pinholes, printing deviations, or lamination flaws in real-time. We ensure that every batch delivered to your warehouse matches our strict product specifications.
Over three and a half decades of excellence in the flexible packaging industry, supplying top global coffee and food brands.
Since its establishment, Dongfa Printing has been committed to providing customers with efficient and high-quality printing services. Our business scope covers the entire process from design, plate making to printing and binding. Whether it's commercial printing or personalized customization, we can fulfill customer needs with our professional technical skills and attentive service.
Our company is dedicated to producing custom flexible packaging for food, medicine, daily-use products, and chemical products. We offer a wide range of products, including spout bags, retort bags, back sealing bags, three-side seal bags, stand-up pouches, quad-seal pouches, flat-bottom bags, zipper pouches, and customized roll films. We consistently use high-quality materials for professional production and strict quality control.
Our products are mainly exported to the Middle East, Southeast Asia, Africa, North America, and Japan, and have received widespread praise from customers. Dongfa Printing's corporate vision is to become a leading company in the printing industry. We strive for excellence, constantly innovate, and are dedicated to providing customers with better printing products and services. Additionally, we prioritize environmental protection and sustainable development, striving to reduce pollution and waste in the production process, and contributing to the harmonious development of society and the environment.
Integrity, professionalism, innovation, and win-win outcomes. We work with the world's most trusted brands.
Answering key industry engineering, quality assurance, and logistic questions for global procurement managers.
We test our barrier films using commercial oxygen permeation analyzers. For specialty coffee packaging, we typically layer PET (or BOPP) with AL foil and a PE sealant layer. This achieves an OTR of less than 0.1 cc/m²/24 hours (tested at 23°C and 0% relative humidity), establishing a near-total block against oxygen entry.
Yes. We manufacture customized high-barrier roll films designed to run seamlessly on fast-acting horizontal and vertical Form-Fill-Seal equipment. We balance the coefficient of friction (COF) on outer layers to prevent tracking issues on the packaging lines.
The valve acts as a one-way system. When CO2 pressure inside the bag reaches a specific cracking pressure (typically 2 to 5 mbar), the valve membrane lifts, letting the gas vent. Ambient air pressure keeps the valve closed from the outside, keeping oxygen from seeping back in.
We perform daily burst and seal-strength tests (ASTM F88/F88M) in our quality control lab. The combination of high-grade metallocene-catalyzed PE films ensures strong seam seals that handle vacuum processes and changes in air pressure during shipping.
Yes. We offer fully recyclable mono-material structures (PE/EVOH-PE) that can be processed in standard recycling streams. We also supply compostable pouches made from renewable bio-based resins that provide reliable barrier protection during storage.
Our multi-color rotogravure printing presses produce rich, detailed graphics up to 10 colors. We use advanced camera inspection systems to monitor color registration on the web, keeping Delta E variances within tight guidelines for consistent brand presentation.
Explore our liquid-safe retort pouch styles, custom spouts, and cup sealing solutions for diverse industry requirements.
DongFa Printing
