Q: 1: Is your company a trading company or a factory?
A: We are a factory, which gives us a price advantage. Furthermore, we have nearly 37 years of experience in mechanical design and manufacturing; we hold CE and ISO9001 (quality management system) certifications and possess import and export rights.
Q: 2: How does your company control machine quality?
A: Our machines undergo rigorous inspection by a team of professional engineers to ensure quality.
Q: 3: What are the payment terms, payment guarantees, and delivery times?
A: We accept a 30% down payment, with the balance due before shipment. We also accept irrevocable letters of credit payable at sight.
Delivery time is 20 to 30 days, depending on the order quantity.
Q: 4: What kind of after-sales service do you provide?
A: Once our machines are purchased, we send experienced engineers to your factory for installation and operator training. All our products come with lifetime technical support to resolve any operational issues that may arise during daily production. Additionally, we offer free, customized project solutions tailored to your factory layout and production needs, ensuring cost-effectiveness and ease of implementation.
Q: 5: What types of bag-making machines do you manufacture?
A: We manufacture a wide range of machines for various packaging applications, including T-shirt bags, shopping bags, garbage bags, and shipping bags. We also offer film blowing, printing, slitting, and 3D packaging (shrink wrapping) machines to meet all processing requirements. This allows customers to source a complete production line from a single supplier, thereby reducing communication costs and simplifying the overall purchasing process.
Q: 6: What materials can your machines process?
A: Our machines work with materials such as LDPE, HDPE, LLDPE, and PP. If you use biodegradable materials like PLA or PBAT, we can adapt the machine (by adjusting sealing temperature and dwell time) to suit these materials. Please specify the material you use when placing your order so we can configure the appropriate settings before shipment.
Q: 7: What power supply does the machine require?
A: Our standard machines operate on a 380V / 50Hz three-phase power supply, with power consumption ranging from 3 to 15 kW depending on the machine size and model. Additionally, a compressed air supply of 0.6 to 0.8 MPa is required for normal operation. If local voltage or frequency differs (e.g., 220 V, 415 V, or 60 Hz), we can adapt the electrical system accordingly; voltage stabilizers can also be installed for regions with unstable power grids.
Q: 8: What is the difference between hot sealing with cold cutting and hot sealing with hot cutting?
A: Hot sealing with cold cutting involves thermally sealing the plastic film before cutting it with a mechanical blade, producing a clean, precise edge-ideal for T-shirt bags and standard flat bags. Conversely, the hot seal and cut process uses a heated wire to simultaneously seal and cut the film by melting it, creating a sealed edge that effectively prevents tearing. This method is particularly well-suited for processing ultra-thin HDPE films, especially those under 15 microns thick. For most customers, we recommend cold cutting, as it allows for higher production speeds and delivers a cleaner finish.
Q: 9: What is a dual-lane bag-making machine, and should I get one?
A: A dual-lane bag-making machine processes two streams of film simultaneously during each cycle, effectively doubling production capacity without requiring extra factory floor space. However, it requires wider film rolls and involves more complex setup adjustments. If your production line focuses on standardized bag sizes with continuous, high-volume orders, a dual-lane model offers significant efficiency advantages; conversely, if you handle small-batch orders requiring frequent specification changes, a single-lane machine remains more flexible and practical for daily operations.
Q: 10: Is your machine compatible with printed film?
A: Yes, our machines are fully compatible with pre-printed film rolls. They are equipped with a photoelectric registration sensor (color mark sensor) that detects print marks on the film, ensuring that each bag is cut and sealed at the precise location. Although our standard configuration includes a basic optical tracking system, we recommend opting for a high-sensitivity registration sensor if your production requires extremely strict print alignment tolerances.
Q: 11: What are the daily maintenance tasks?
A: Routine maintenance should be organized into daily, weekly, and monthly checks to ensure the machine's long-term stability. On a daily basis, operators must check pressure gauges, clean the film guide rollers, remove residue from the sealing bars, and ensure that the emergency stop buttons remain disengaged.Weekly procedures involve lubricating designated points, tightening fasteners, and cleaning the electrical cabinet's fan filters; monthly maintenance includes checking drive belt tension and wear, inspecting pneumatic cylinders for air leaks, and verifying the calibration of temperature controllers.
Q: 12: How can I contact Zhuxin Machinery?
A: You can reach our sales and technical support team through several official channels, including WhatsApp (+86-139-6893-5808) for instant communication or email (Dylan@zhuxinmachine.com) for formal or technical inquiries. International customers are also welcome to visit our production facility in Pingyang, Wenzhou City (Zhejiang Province, China). Our operations team generally processes and responds to all inquiries within 24 hours on business days.