Non Woven Carry Bag Machine

Our Factory
Zhejiang Zhengwei Machinery Co., Ltd. was established in 2007 and located in the south Zhejiang coast, the East China Sealt. It is a famous Chinese machinery manufacturing city - Ruian City, Zhejiang Province.

R&D
The company adheres to the design concept of high efficiency and environmental protection, with the mission of reducing white pollution, and is committed to the research and development, production, manufacturing, sales, and service of equipment such as non-woven box bags, plastic 3D bags, new structure paper square bottom bags, and pp 3D bags. In long-term practice, the company has gradually formed a business philosophy with independent research and development, design and manufacturing capabilities as its positioning. So far, the company has more than 100 invention patents and new utility and appearance patents.

Rich Experience
In 2012, the company launched the world's first non-woven box bag making machine; In 2016, the project pp 3D bag making machine research and development was successful in 2022, and successfully developed plastic 3D bag making machine in 2017; In 2023, a new structured paper square bottom bag making machine was launched, After completing the independent research and development of the four major 3D bag production equipment, we have become a professional manufacturer of packaging 3D bag mechanical equipment.

Our Service
The company adheres to the service tenet of "ZWE offer the best service to win the trust of customers", and strives to create a new era in the 3D bag industry. Focusing on the future, consistently, based on innovation, and strives to create a new era in the three-dimensional bag industry.

Designing the Custom Non-Woven Bags
Factors that influence the design of the custom non-woven bags are the sizing & placement, and the color selection & limitation.

Sizing and Placement: When designing custom-printed non-woven bags, it's crucial to consider the bag's size and placement of the design elements. The design should be arranged to fit well on the bag without distorting the bag shape and taking into account seams or handles that may affect the layout. The logos, text, and graphics should be appropriately positioned and visible.

Color Selection and Limitations: When selecting colors for printed non-woven bags, it's important to use only the colors that are compatible with the bag. Light-colored bags support a wider range of colors and shades, but dark-colored bags are compatible with specific ink types.

Ink Selection
The next step is to select the industrial ink that will be used to print the bags. There are several types of industrial inks, each with its own advantages and disadvantages. Some of the commonly used inks for non-woven bag printing are water-based inks, solvent-based inks, and UV-curable inks.

Choosing the right ink is dependent on certain factors
Adhesion: The selected ink should adhere well to the non-woven bag material to enable durability and resistance to fade. The types of ink most ideal are solvent-based ink, oil-based ink, and UV ink.

Durability: The selected ink should be long-lasting and capable of withstanding wear and tear, including exposure to sunlight and moisture. The types of ink most ideal are solvent-based ink and oil-based ink.

Color Vibrancy: The selected ink should provide vibrant and accurate colors, as well as enhance the visual appeal of the printed design. The types of ink most ideal are solvent-based ink and UV ink.

Environmental Considerations: The selected ink should be eco-friendly, free from harmful chemicals, and comply with environmental regulations. The types of ink most ideal are water-based ink and solid-based ink.

Printing Setup
The next step is the printing setup, which involves preparing the printing equipment for the custom-printed non-woven bags.

Prepare the Printing Area: Get a clean and organized workspace for printing. Ensure that the area is well-ventilated and free from contaminants that could affect the printing quality.

Arrange the Printing Equipment: Set up the printing equipment like the printing press and heat press in the perfect spot. Ensure the equipment is in good working condition.

Set up the Non-Woven Bags: Lay out the bags on a flat surface, making sure they are positioned correctly. You could use some fixture or adhesive to hold the bags in place.

Prepare the Ink: Depending on the printing technique, you would have to prepare the ink accordingly. This involves mixing the inks, ensuring they are perfectly mixed, and pouring them into the printing equipment.

Settings Adjustment: Depending on the printing technique, set the settings on the printing equipment, like the temperature, quality, pressure, and speed.

Full-Scale Production printing
Once the setup is complete, the actual printing process can begin. This basically involves consistently applying the ink onto the non-woven bags in accordance to the predetermined design and specifications.

It's imperative to maintain consistency throughout the production run by checking the quality of prints from time to time, monitoring the ink levels, and making sure the ink printing equipment is functioning appropriately. Carry out regular inspections to make adjustments as needed to ensure excellent production.

Drying/Curing
After printing, the non-woven bags should be put through a drying or curing process to ensure the ink adheres perfectly for maximum durability. The timeframe can vary depending on the ink type, printing technique, and environmental conditions.

Disassemble Your Printing Machine Equipment
Start by carefully disassembling your Printing Machine equipment. This typically includes removing the screen from the press, detaching any squeegees, and separating the ink wells. Be sure to consult your equipment's manual for specific disassembly instructions to avoid any damage.

Clean the screen
Cleaning the screen is perhaps the most crucial step in the maintenance process.
Remove Ink: Use a scraper or spatula to remove as much ink as possible from the screen. Be gentle to avoid damaging the mesh.
Apply Screen Cleaner: Spray or apply a screen cleaner designed for Printing Machine onto both sides of the screen. There are eco-friendly options available that are effective and safer for regular use.
Scrub Gently: With a soft brush or a special screen cleaning brush, gently scrub the screen. Pay extra attention to the mesh and the edges where ink tends to accumulate.
Rinse Thoroughly: Rinse the screen with water. A pressure washer can be effective, but ensure the pressure isn't too high to avoid damaging the mesh. The screen should be free of all cleaner and ink residues.
Dry Completely: Leave the screen to dry in a clean, dust-free environment. You can use a fan to speed up the process but avoid using heat as it may warp the screen.

Clean the Squeegees
Squeegees need to be cleaned after every use to maintain their edge and prevent ink from curing on them.
Remove Ink: Wipe off as much ink as possible with a rag or scraper.
Wash with Cleaner: Use a squeegee cleaner or a mild detergent to wash the blade and handle. Avoid using harsh chemicals that can damage the rubber or polyurethane blade.
Dry Thoroughly: Wipe the squeegee with a clean cloth and let it air dry completely before storing.

Inspect and Clean the Platen
The platen or printing bed can accumulate ink, adhesive, and dust over time, which can affect print quality.
Scrape Off Residue: Carefully scrape off any dried ink or adhesive. Be careful not to gouge the platen surface.
Clean Surface: Wipe the platen with a damp cloth and a mild cleaner. For stubborn residues, you may use a platen cleaner or alcohol, but test it on a small area first to ensure it doesn't damage the surface.
Dry and Apply Protective Layer: Once clean, dry the platen thoroughly. Apply a new layer of platen tape or adhesive to protect the surface and provide a consistent printing base.

Lubricate Moving Parts
Check the press's moving parts, including hinges and bearings. Clean them of any ink or dust build-up and apply a suitable lubricant. This prevents wear and tear and ensures smooth operation.

Reassemble and Store Properly
After everything is clean and dry, carefully reassemble your equipment. Make sure all components are securely fastened. Store your equipment in a clean, dry place to prevent dust accumulation and possible rusting.