PRODUCTS
WHO WE ARE
Shenzhen Sunbown Co., LTD, short name as SUNBOWN, is based in Shenzhen, China.
Since 2010, we have focused on degassing valve manufacture and 85% are mainly supplied to China domestic flexible packaging manufacturers.
As nowadays some manufacturing sites have moved outside of China, so we aim to expand markets overseas and serve flexible packaging manufacturer abroad with our 15 years stable quality performance.
15 +
Export Years
180 +
Excellent Team
5800 +
Factory Area (sqm)
280 +
Cooperated Clients
CERTIFICATIONS
ISO 9001
Recyclability Test
SGS EU RoHS
Direct Contact with Food Test
Advantages of SUNBOWN Degassing Valve
- ISO9001 certified manufacturing factory.
- EU RoHS approved (SGS), Direct Contact with Food Test (SMQ), Recyclability Test (SGS) etc.
- 15 years export history.
- Dust-free injection workshop and automatic assembly machine to ensure stable quality.
- Trained team to offer prompt pre-sale & after-sale service.
- Sufficient inventory to meet demand for samples or high-mix medium batches.
- Rich experiences in cooperating with domestic and overseas flexible packaging partner or branded partners for numerous projects.
15 +
Export Years
180 +
Excellent Team
5800 +
Factory Area (sqm)
280 +
Cooperated Clients
Advantages of SUNBOWN Degassing Valve
1. ISO9001 certified
2. EU RoHS approved (SGS), Direct Contact with Food Test (SMQ), Recyclability Test (SGS) etc.
3. More than 15 years export history.
4. Dust-free injection workshop and automatic assembly machine to ensure stable quality.
5. Trained team to offer prompt pre-sale & after-sale service.
6. Sufficient inventory to meet demand for samples or high-mix medium batches.
7. Rich experiences in cooperating with domestic and overseas flexible packaging partner or branded partners for numerous projects.
Application
News
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News
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28 2026 / 10
Mono-PP Coffee Packaging Is Here. Is Your PP Degassing Valve and Valve Applicator Ready?
SÜDPACK introduced something last week that should matter to anyone running a co
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21 2026 / 10
Silicone Oil in Coffee Degassing Valves: Does Your Valve Really Need It?
If you've spent any time sourcing one-way degassing valves for coffee bags, you'
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14 2026 / 10
Vietnam's Coffee Is Selling More but Earning Less—Is Your Packaging Line Ready for the Upgrade?
Something strange is happening with Vietnam's coffee exports.In the first nine m
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06 2026 / 10
Why Small-Batch Coffee Packaging Is Putting New Pressure on Your Valve Applicator
SunDance announced in late September that it has added custom coffee valve pouch
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15 2026 / 09
Why Are Your Coffee Bags Puffy? It's Probably Not Your One-Way Degassing Valve
You just walked into the warehouse and half the bags on the pallet look like the
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09 2026 / 09
EXPO CAFÉ 2026 Mexico Sparks Fresh Thinking: What Coffee Packaging Can Learn from the Industry's Biggest Stage
As the coffee world counts down to EXPO CAFÉ 2026 in Mexico City (September 3–5
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06 2026 / 09
Embracing Industry 4.0: How Our DVP Valve Applicator Machines Are Shaping the Future of Smart Manufacturing
The manufacturing landscape is undergoing a seismic shift. You've probably heard
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29 2026 / 08
Interplast 2026 Brazil Unpacked: Why Valve Technology Became the Quiet Star of the Show Floor
Joinville, Brazil — As the lights dim on Interplast 2026, one message echoes lou
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23 2026 / 08
Stop Losing Money on Small Orders: The DVP-5 Semi-Automatic Valve Sealer
Are you tired of paying premium prices for outsourcing small-batch valve sealing
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13 2026 / 08
Side Valve Placement on Flexible Packaging: Technical Guide & Valve Applicator Machine Solutions
IntroductionMost degassing valves go on the front or back of a flexible pouch. T
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26 2026 / 07
Post-Show Insights from CAFEEX Shenzhen 2026: Your One-Stop Guide to Choosing the Right One-Way Degassing Valve and Valve Applicator Machine
CAFEEX Shenzhen 2026 | July 24-26, Futian Convention & Exhibition Center | #Coff
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20 2026 / 07
World Cup Rush: Why the Right Coffee Valve Makes or Breaks Your Freshness
The World Cup Effect No One Talks AboutAs the 2026 FIFA World Cup has come to a
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16 2026 / 07
DVP-2000 Fully Automatic Dual-Station Servo Valve Applicator | 40 PCS/min Coffee Valve Machine
Introduction: One-Stop Integrated Valve + Applicator SolutionsIn the coffee pack
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29 2026 / 06
Valve-Free Coffee Packaging Is Here. Does Your Bag Still Need a One-Way Degassing Valve?
If you walked the floor at World of Coffee Brussels this year—June 25–27, 2026,
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29 2026 / 06
DVP-5 Semi-Automatic Coffee Valve Applicator: The Smart Upgrade from Manual Valve Applicator Machine
Why replacing your manual foot-pedal valve applicator machine with the DVP-5 Cof
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19 2026 / 06
Saudi Print & Pack 2026: A Fresh Canvas for Coffee Packaging Innovation
Introduction – Setting the Scene in RiyadhSaudi Print & Pack 2026, running from
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03 2026 / 06
What COFAIR Qingdao 2026 Taught Us About Freshness: Why One-Way Degassing Valves & Applicator Machines Matter More Than Ever
COFAIR International Coffee Industry Expo has been taken place from May 29 to 31
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27 2026 / 04
Chinaplas 2026 Wrap-Up: Smarter Degassing for Flexible Packaging – SUNBOWN Degassing Valves & Valve Applicator Machines
Chinaplas 2026 (April 21–24, Shanghai) has successfully concluded, once again pr
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20 2026 / 04
25kg Heavy-Duty Bag Valve Applicator Machine – Fully Automatic Solution
Precision. Automation. Intelligence.In the chemical, feed, and food packaging in
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13 2026 / 04
CHINAPLAS 2026 Shanghai: Three Technical Trends for Coffee Valve and Coffee Valve Applicator Machine Buyers
CHINAPLAS 2026 will take place in Shanghai from April 21 to 24. As the largest p
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17 2026 / 03
Automatic Coffee Valve Applicator Machines | DVP-1200 & DVP-2000
In the competitive landscape of flexible packaging, ensuring product freshness a
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05 2026 / 03
The Great Coffee Valve Debate: Why "Two-Way" Is the Fastest Way to Ruin Your Beans
One-Way Valves vs. Two-Way Valves: What Every Coffee Lover Needs to KnowIf you'v
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25 2026 / 02
DVP-5 Semi-Automatic Valve Applicator: The Most Cost-Effective Coffee Valve Machine for New Beginners
In the world of flexible packaging, applying one-way degassing valves (coffee va
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11 2026 / 02
Inline Coffee Valve Applicator: Precision, Speed, and Seamless Integration
SUNBOWN DVP-1000 Inline Coffee Valve Applicator: Precision, Speed, and Seamless
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09 2026 / 02
Ensuring Peak Freshness: The Science Behind Our One-Way Coffee Degassing Valve Testing
At the heart of effective packaging for coffee, snacks, and other freshness-sens
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25 2025 / 12
Seasons Greetings from Your Trusted Coffee Packaging Partner | SUNBOWN
As the holiday season approaches, we find ourselves reflecting on the past year
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08 2025 / 12
Coffee Valve Applicator Shines at PLAST EURASIA ISTANBUL 2025!
December 10, 2025 — The recent PLAST EURASIA ISTANBUL 2025, a premier internatio
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01 2025 / 12
Optimizing Coffee Valve Application: Addressing Inconsistent Sealing and Introducing the DVP-5 Semi-Automatic Coffee Valve Applicator
In specialty coffee packaging, the humble one-way degassing valve—often called a
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12 2025 / 11
LDPE vs. HDPE One-Way Degassing Valves: Which Is Right for Your Flexible Bags?
As a leading one-way degassing valve manufacturer in China, we often receive inq
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19 2025 / 10
The Freshness Factor: How Degassing Valves are Revolutionizing Mushroom Packaging
October is National Mushroom Month, a time to celebrate the incredible versatili
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11 2025 / 10
World Food Day 2025: How One Way Degassing Valves Combat Global Food Waste
Every year on October 16th, World Food Day brings global attention to the critic
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06 2025 / 10
Pre-PACK EXPO 2025 Preview: The Future of Packaging with Smart Valve Application & Degassing Tech
The packaging world is buzzing with anticipation for PACK EXPO International 202
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01 2025 / 10
Beyond the Bag: Celebrating National Coffee Day by Honoring Freshness
Happy National Coffee Day!Official Coffee National Day is September 29, 2025, th
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27 2025 / 09
Navigating Global Supply Chains: How Degassing Valves Protect Your Products on World Maritime Day and Beyond
World Maritime Day (September 26th) highlights the importance of the shipping in
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21 2025 / 09
Brewing Success for International Coffee Day: The Critical Role of Freshness in Packaging
International Coffee Day (October 1st) is the biggest event on the calendar for
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11 2025 / 09
Expanding Our Portfolio: Introducing High-Temperature Resistant PP One-Way Degassing Valves
As a leading global supplier for one-way degassing valves for flexible packaging
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07 2025 / 09
Maximize Your Packaging Efficiency: The Complete Guide to Our Degassing Valve Applicator Machines
For over a decade, we have been a trusted name in the manufacturing of high-perf
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25 2025 / 08
A Hard Look at the ROI of Degassing Valves
If you're in the business of packaging coffee, fresh-ground snacks, or any produ
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31 2025 / 03
Troubleshooting Common Issues with One-Way Degassing Valves
One-way degassing valves are essential for maintaining the freshness and quality of packaged products, particularly in the coffee, pet food, and agricultural industries. However, like any mechanical component, they can encounter issues that affect their performance.
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08 2025 / 01
How to Properly Install and Integrate One-Way Degassing Valves into Flexible Packaging: A Step-by-Step Guide
One-way degassing valves are crucial for maintaining product quality and extending shelf life in flexible packaging, particularly for products sensitive to oxidation or moisture. Proper installation is essential to ensure optimal performance and prevent product spoilage.
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03 2024 / 11
How Degassing Valves Prevent Package Bursting in High-Pressure Environments
In various high-pressure environments, such as those encountered in the food, be
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31 2024 / 10
The Science Behind One-Way Degassing Valves: How They Work
One-way degassing valves are critical components in a variety of industries, especially those involving the storage and packaging of materials sensitive to gas buildup, such as food products and chemicals. As a manufacturer of these valves, understanding their science and functionality can enhance your offerings and help educate your customers.
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09 2024 / 10
Case Study: Successful Use of Degassing Valves in Coffee Packaging
In the coffee industry, preserving flavor, aroma, and freshness is paramount. Th
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13 2024 / 09
Future Trends in Flexible Packaging and the Evolving Role of Degassing Valves
In an era where consumer expectations for convenience, sustainability, and freshness continue to drive innovation, flexible packaging is at the forefront of industry transformation. As brands and manufacturers seek ways to enhance product safety, shelf life, and convenience, degassing valve technology is becoming increasingly important. This article explores how future trends in flexible packaging are poised to shape the role and development of degassing valve technology.
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26 2024 / 08
Celebrating International Dog Day: Keep Dog Food Fresh by Pouch with One-Way Degassing Valves
Happy International Dog Day! August 26th, today we honor the joy and companionship that dogs bring into our lives. It's not a public holiday, but we think it should be! As a manufacturer of one-way degassing valves, we're excited to highlight how our technology plays a crucial role in maintaining the freshness and quality of dog food.
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23 2024 / 08
Boosting Sales: "Black Myth: Wukong" Partnership with Luckin Coffee
Luckin Coffee uses the popularity of "Black Myth: Wukong" to carry out promotional activities. On August 20, 2024, "Black Myth: Wukong", China's first AAA video game inspired by the classic novel "Journey to the West", was officially launched globally.
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18 2024 / 08
Degassing Valve Manufacturer | Cafeex 2024 Shenzhen
Shenzhen, China – August 18, 2024 – The bustling city of Shenzhen recently played host to one of the most anticipated events in the coffee and beverage industry: Cafeex 2024 Shenzhen.
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08 2024 / 08
Celebrating Official Cat Day: How Our Degassing Valves Keep Your Feline Friends' Food Fresh
August 8th marks Official Cat Day, a day dedicated to celebrating our beloved feline companions.
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25 2024 / 03
Understanding Degassing Valves: The Impact of Venting Hole Configurations on Flexible Packaging
Degassing venting valves are essential components in flexible packaging, especially for products that generate gas or are sensitive to pressure changes.
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08 2024 / 01
Global One Way Degassing Valves Market Research Report 2024
One way degassing valves are also known as freshness valves, aroma valves, coffee valves, vent valve or exhaust valves.
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30 2022 / 07
Are Your Degassing Valves Suitable for Direct Contact with Food?
When it comes to equipment in the food industry, safety and compliance are non-negotiable. One crucial component that often requires careful consideration is the degassing valve.
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12 2021 / 07
Enhancing Quality and Reliability: Our ISO 9001 Certification Journey
As factory, we take immense pride in our role as a leading manufacturer of high-quality one way degassing valves.
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18 2020 / 10
Válvula Desgasificadora Unidireccional para Bolsas de Café
La válvula desgasificadora unidireccional es un componente clave en el envasado de café, diseñada para permitir la liberación de gases sin permitir la entrada de aire exterior. Este mecanismo es vital para preservar la frescura del café y prolongar su vida útil, abordando uno de los principales desafíos en el almacenamiento del café recién tostado.
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18 2018 / 10
Optimizing Fertilizer Packaging with One-Way Degassing Valves
In the agricultural sector, the packaging and preservation of fertilizers play a critical role in ensuring product effectiveness and longevity. As the demand for sustainable and efficient farming practices increases, so does the need for innovative packaging solutions. One such innovation is the use of one-way degassing valves, which offer significant benefits in maintaining the quality and usability of fertilizers. This article explores how these valves enhance fertilizer packaging and preserva
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17 2018 / 09
Customer Feedback: How One-Way Degassing Valves Have Improved Packaging Quality
In the competitive landscape of packaging, ensuring product freshness and extending shelf life are top priorities for businesses. One innovative solution that has garnered considerable attention is the use of one-way degassing valves. These innovative components not only enhance product integrity but also elevate customer satisfaction. Through real-world testimonials and success stories, we can explore how these valves have transformed packaging quality across various industries.
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21 2018 / 03
The Role of Degassing Valves in Extending the Shelf Life of Pet Food
In the ever-evolving pet food industry, ensuring product longevity and safety is paramount. One crucial innovation in this realm is the use of degassing valves, which play a vital role in maintaining the freshness of pet food products. These valves are designed to release excess gases generated during the packaging process, preventing pressure build-up that can compromise the integrity of the packaging. As pet owners, ensuring the health and safety of our furry companions is a top priority. One
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14 2017 / 06
Design Considerations for Custom One-Way Degassing Valves
When it comes to packaging sensitive products, especially in industries like food, pharmaceuticals, and electronics, the integrity of the package is paramount. One essential component of maintaining that integrity is the incorporation of one-way degassing valves. These valves allow gases to escape without letting contaminants back in, which is crucial for preserving freshness, preventing spoilage, and maintaining product quality. This article explores the key design considerations for creating c
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15 2017 / 04
Comparing One-Way Degassing Valves with Other Types of Packaging Solutions
When it comes to preserving the quality and freshness of products, especially in the food and beverage industry, packaging plays a critical role. Among various packaging technologies, one-way degassing valves have gained significant attention. This article explores the benefits and limitations of one-way degassing valves in comparison with alternative packaging methods, highlighting their unique features, advantages, and potential drawbacks.
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18 2016 / 06
The Impact of Material Selection on the Performance of One-Way Degassing Valves
One-way degassing valves play a crucial role in various industries, including food and beverage, pharmaceuticals, and chemical manufacturing. Their primary function is to allow gases to escape while preventing contaminants from entering, thereby preserving the integrity of the contents within a container. However, the materials used in the construction of these valves significantly influence their functionality and durability. This article delves into how different material selections affect the
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22 2015 / 10
Why Degassing Valves Are Important for Storing Ground Coffee too?
When talk about one way degassing valves, it’s also called coffee valve, the coffee bean will come out from our mind directly, but When it comes to preserving the freshness of coffee, particularly ground coffee, the packaging plays a crucial role too.
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02 2015 / 09
Why Degassing Valves are Essential in Coffee Pouches: Preserve Freshness & Quality
Have we ever noticed that there is always a small round valve on various coffee bags or other packaging bags? This is because this valve has an indispensable role in coffee specially. We call it a coffee valve or one-way exhaust degassing valve. Please don’t underestimate such a small round valve, it is definitely helpful.
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29 2015 / 08
How Do You Keep Coffee Fresh After Opening It?
Opening a bag of coffee marks the beginning of a race against time. To maintain the rich flavors and enticing aroma of your coffee, it's crucial to implement effective methods to preserve its freshness. Here's how you can keep your coffee tasting its best after you've opened the bag.
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18 2015 / 06
Select the Right Diameter of Degassing Valve for Your Valve Applicator
Degassing valves are essential in packaging processes where the control and removal of gases is critical. They ensure that unwanted gases are vented efficiently, preventing potential hazards and maintaining optimum process conditions. However, for optimum performance, it is vital to select the right diameter of degassing valve for your valve applicator. This selection must meet the specific requirements of your valve applicator. The following guide can help you select the right diameter of your
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09 2014 / 11
Some Knowledge Inside the Coffee Pouch
Coffee is much more than a daily ritual; it's a journey through history, culture, and technology. The story of coffee spans centuries and continents, evolving from a humble bean to a global phenomenon.
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08 2014 / 11
Why Need One Way Degassing Valve for Fermented Feed Bags?
Fermented feed is a valuable component in animal nutrition, often used to enhance the health and growth of livestock. During the fermentation process, microorganisms break down feed components, producing gases such as carbon dioxide. To ensure that this process is effective and safe, fermented feed bags require a one-way degassing valve.
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24 2014 / 08
Understanding and Preventing Oil Leakage in Coffee Bags: A Focus on Degassing Valves
Coffee enthusiasts and suppliers alike have encountered an inconvenient issue: oil leakage from coffee bags. Oil leakage in coffee bags from a degassing valve can be a frustrating issue for coffee manufacturers and their clients.
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18 2014 / 05
Understanding the Purpose of Coffee Bag Valves
When you purchase a bag of freshly roasted coffee, you may notice a small one-way valve on the package. While this may seem like a small detail, this valve plays a vital role in maintaining the quality and freshness of your coffee. Here is an overview of coffee bag valves and why they are so important.
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10 2013 / 12
Why Need Coffee Freshness Valve?
When it comes to savoring a perfect cup of coffee, freshness is paramount. Coffee enthusiasts and casual drinkers alike understand that the quality of a brew is closely tied to the freshness of the beans. Whether you're a casual drinker or a dedicated aficionado, you know that the quality of your coffee depends significantly on how well it is preserved from roast to cup. One crucial component that plays a pivotal role in maintaining coffee’s freshness is the coffee freshness valve. But what exac
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19 2013 / 10
What's Up with Those Little Holes on Coffee Bags?
If you've ever looked at a coffee bag and noticed those seemingly insignificant little holes, you've probably wondered, "What is the purpose of those little holes?” "Are they there for decoration or to make the bag look interesting? "The truth is, these little holes play a vital role in maintaining the freshness and quality of your coffee. Let's dive into why they are so important in following article.
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25 2013 / 08
Why Squeezing Coffee Bags with a One-Way Degassing Valve is Not Recommended
Coffee aficionados know that the freshness of coffee beans is paramount for achieving the best flavor and aroma. To maintain this freshness, many coffee bags come equipped with a one-way degassing valve.
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26 2013 / 05
How Much Do One-Way Degassing Valves Extend the Freshness of Coffee?
Coffee freshness is a key factor in the enjoyment of a perfect cup. One of the unsung heroes in maintaining that freshness is the one-way degassing valve. This small but effective component plays a significant role in preserving the quality of coffee post-roasting.
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20 2012 / 05
Optimizing Metal Cans: The Advantages of Degassing Valves for Product Integrity
In food and beverage packaging, metal cans have long been valued for their durability and ability to hold products.
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12 2012 / 05
Understanding One-Way Degassing Valves: Essential Components for Flexible Packaging
In the realm of flexible packaging, maintaining product quality and extending shelf life are critical factors for success. Whether it’s preserving the freshness of coffee, ensuring the integrity of pet food, or safeguarding the efficacy of fertilizers and fermented feeds, packaging solutions must be both innovative and functional. One of the critical innovations in this domain is the one-way degassing valve, which plays a pivotal role in preserving product quality while maintaining packaging int
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12 2012 / 02
How One-Way Degassing Valves Enhance the Freshness of Coffee
Coffee is a complex and delicate beverage, cherished for its rich flavors and aromas. Yet, despite its robust nature, coffee is highly susceptible to changes in freshness and quality. One of the critical innovations designed to address these issues is the one-way degassing valve. This small but mighty component plays a significant role in preserving the freshness and flavor of coffee, ensuring that each cup is as delightful as the first. In this article, we will explore the function of these val
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12 2011 / 05
The Role of Degassing Valves in Roasted Coffee Storage
Maintaining the original quality of roasted coffee – otherwise known as "freshness" is a top concern for coffee roasters.
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28 2010 / 10
Why Do Roasters Choose Coffee Package with Degassing Valves?
Degassing valves are an important feature in coffee packaging that play a major role in maintaining the freshness and quality of roasted coffee beans.
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21 2010 / 08
How Does One Way Degassing Valve Work?
One way degassing valves are components specifically designed to control the release of gas from a system or container while preventing back-flow or the entry of external contaminants.
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