Onion bag making machine

When evaluating machinery, prioritize the production speed (pieces per minute) and the range of bag sizes the machine can accommodate. Ensure the machine supports PE (Polyethylene) or PP (Polypropylene) materials, as these are standard for mesh bags. Look for features like automatic cutting and sewing integration, servo motor control for precision, and PLC touch screen interfaces for ease of operation. A high-quality machine should offer a positioning accuracy of ±1mm to reduce material waste.

For the European market, a CE Certification is mandatory to ensure the machinery meets safety, health, and environmental protection requirements. For global quality management, prioritize suppliers with ISO 9001:2015 certification. If the bags produced are intended for direct food contact, ensure the machine components (like lubricants or contact surfaces) align with FDA or REACH standards to prevent chemical migration.

Request a video of the machine running at full capacity for at least 30 minutes to check for stability and noise levels. Ask for the brand of core components; reputable machines often use Schneider or Siemens electronics and SMC pneumatic parts. Verify the blade material (e.g., high-speed steel or tungsten carbide) to ensure long-term cutting sharpness and minimal downtime for maintenance.

These machines are primarily used for producing Leno mesh bags and Raschel bags. Usage scenarios range from agricultural packaging facilities to industrial bag manufacturing plants. Depending on the configuration, they can produce bags with drawstrings, printed labels, or reinforced handles, catering to different retail and wholesale market needs.

It is highly recommended to hire a third-party inspection agency (such as SGS or Intertek) to conduct a Pre-Shipment Inspection (PSI). They will verify the mechanical assembly, electrical wiring, and safety guards. On Made-in-China.com, you can also look for Audited Suppliers who have undergone on-site verification to mitigate the risk of receiving sub-standard equipment.

Focus on the Total Cost of Ownership (TCO) rather than just the initial price. Negotiate for a comprehensive spare parts package (including extra heating elements, blades, and sensors) to be included in the price. Additionally, push for a 12 to 24-month warranty period and clear terms regarding remote technical support or on-site installation services.

Ensure the supplier uses seaworthy packaging, typically vacuum-sealed plastic wrapping and reinforced wooden crates (fumigated), to prevent rust during sea transit. Clarify the Incoterms; for heavy machinery, CIF (Cost, Insurance, and Freight) or DAP (Delivered at Place) are common, but ensure you have comprehensive marine insurance to cover potential damage during loading or unloading.

Use secure payment methods such as Letters of Credit (L/C) for large sums or Escrow-based services provided by reputable B2B platforms. Avoid direct transfers to private bank accounts. On Made-in-China.com, utilize the Secured Trading Service to ensure that your payment is only released to the supplier after you have confirmed the receipt and inspection of the machinery.