Nanwang Technology launches' waterproof self sealing paper bag ', targeting pain points in the food delivery packaging industry
With the explosive growth of the global food delivery industry, the functionality and environmental friendliness of food delivery packaging in rainy and snowy weather have gradually become industry pain points. Traditional paper bags are prone to moisture damage during rainy and snowy weather, resulting in a decrease in user experience.
In this context, the design of waterproof takeaway paper bags has emerged, aiming to balance practical needs and environmental responsibilities, while empowering brand differentiation competition.
Waterproof self sealing paper bag
Waterproof self sealing paper bag
The new waterproof self sealing paper bag adheres to the design concept of "health, hygiene, and environmental protection", and can maintain high strength even after 30 minutes of rain testing, effectively protecting the items inside the bag.
The sealing area is also designed with adhesive labels, which facilitate the sealing of the bag opening and are easy to open, ensuring the reduction of rainwater entering and maintaining the cleanliness and hygiene of the food.
Product parameters
Face width: 200-540mm
Bag height: 290-650mm
Edge clamp: 80-200mm
Tongue mouth: 39-60mm
Scratching width: 10-35mm
Raw material weight range: The minimum weight is 120 grams, and for wide surfaces/yellow cattle, it is recommended to weigh over 130 grams
At the WORLD PACKING AWARDS 2025 World Packaging Awards, Nanwang Technology won the "Annual Market Potential Development Award Gold Award" for its new waterproof self sealing paper bag.
30 minute rain test without pressure
Adopting a two time full plate water splashing and oil polishing process, it is not afraid of daily splashing or slight rain.
Self sealing design+double-layer waterproof coating protection, keeping the paper bag high-strength and undamaged.
After professional testing, it has been found that it can remain intact even after 30 minutes of continuous rain exposure.
Innovative self sealing design, dual protection of privacy and security
Comes with adhesive tape and tongue opening, sealed and can only be opened by breaking.
The three tongue self sealing design ensures the privacy of the interior, providing consumers with peace of mind.
The design of adhesive labels at the sealing area ensures a secure and easy to open seal.
Environmentally friendly materials, reflecting corporate social responsibility
Completely biodegradable paper material, bidding farewell to white pollution.
The weight range is above 120-130g, balancing strength and environmental protection.
Assist brands in building a green and environmentally friendly image.
Widely applicable scenarios, enhancing the professional image of the brand
The new waterproof self sealing paper bag can ensure the privacy and safety of the contents during the delivery process, and is suitable for takeaway delivery scenarios of bagged food or privacy products in industries such as coffee and tea drinks, Western fast food, and pharmaceuticals.
01. Coffee and tea drinks: splash proof, keep the cup dry and clean
Adopting waterproof technology, effectively blocking the infiltration of rainwater and condensed water, and avoiding moisture damage to paper bags. The self sealing tongue design ensures that the cup holder is stable and not tilted, coupled with a splash proof inner layer, even if delivered on rainy days, the beverage can remain dry and tidy, reducing spill complaints and enhancing customer experience.
02. Western style fast food: rain and oil proof, maintain food temperature
The delivery of Western style fast food often faces the dual challenges of food diversity and packaging requirements. Waterproof self sealing paper bags, with their convenient sealing design, make it easy for customers to carry and prevent food from spilling during movement. At the same time, they prevent external dust and other impurities from entering to a certain extent, ensuring that food is enjoyed in a relatively clean state and meeting the packaging and carrying needs of some foods in daily Western fast food consumption scenarios.
03. Privacy Products: Self sealing Design to Protect Consumer Privacy
In the consumption scenarios of pharmaceuticals and privacy products, waterproof self sealing paper bags are the key "guardians" to ensure safety and privacy. The self sealing design firmly locks the items inside the bag, preventing them from being exposed, so that patients do not have to feel embarrassed in public due to the leakage of information from the packaging. The destructive sealing design ensures that once the package is opened, it cannot be restored, protecting user privacy. Matte material avoids reflection and builds a thoughtful defense line for personal health and privacy.
The tongue position can be customized with warning messages (such as "Private items, please do not open"), making delivery safer and consumers more at ease.
04. High end catering: enhancing brand quality and user experience
High end catering brands can choose materials thicker than 130g, paired with hot stamping logos or matte touch printing, to enhance the packaging grade. Self sealing design ensures food safety from delivery to pickup, avoiding accidental opening during delivery, making every takeaway as exquisite as when it was first served, and strengthening the brand's high-end image.