| Machine Scope | U-panel product definition | Confirm whether the machine is designed for U-panel flexible intermediate bulk container production, including fabric cutting, panel positioning, sewing, lifting-loop attachment, and optional webbing operations. | Review the process flow, machine layout, sample drawings, and applicable bag specifications before placing the order. | Signed technical specification showing product type, fabric construction, seam design, dimensions, and approved sample bags. |
| Production Capacity | Output and cycle time | Use a capacity range based on the complete process, not the sewing head alone. A practical quotation should state pieces per hour, operator count, fabric specification, seam configuration, and planned working hours. | Run a production trial using the buyer’s fabric, thread, lifting loops, and target dimensions. | Factory acceptance report listing actual output, stoppage time, defect rate, and operating conditions. |
| Material Compatibility | Fabric, thread, tape, and liner compatibility | The machine should accommodate the stated polypropylene fabric grammage, coated or uncoated material, thread size, webbing width, and liner arrangement without excessive fraying or skipped stitches. | Test the full material set under normal production speed and tension settings. | Approved samples plus a documented list of allowable material specifications and machine settings. |
| Dimensional Range | Bag size and working envelope | Specify minimum and maximum panel length, width, gusset size, sewing allowance, loop length, and material roll or table dimensions. Do not rely on a single nominal bag size. | Compare the machine drawing with the buyer’s product range and measure trial samples. | Approved dimensional inspection sheet with tolerances stated in millimetres. |
| Electrical Compatibility | Voltage, frequency, phase, and control system | Confirm supply voltage, frequency, phase, full-load current, control voltage, motor ratings, plug type, and allowable voltage variation. Common industrial supplies include three-phase 380–415 V at 50 Hz or 440–480 V at 60 Hz, but the final value must match the installation site. | Check the nameplate, electrical schematic, load calculation, and local electrical code requirements. | Approved electrical data sheet and a site compatibility confirmation signed by the buyer’s electrician. |
| Compressed Air | Air pressure and consumption | If pneumatic clamps, cutters, or tension devices are included, state working pressure, peak consumption, air quality, and connection size. A regulated supply around 0.6–0.8 MPa is common for industrial pneumatic equipment, subject to the machine manual. | Verify pressure at the machine inlet during simultaneous operation of all pneumatic functions. | Pneumatic schematic, consumption figure, filter-regulator specification, and site utility checklist. |
| Installation Space | Footprint, access, and material flow | Allow space for the machine, control cabinet, material loading, product discharge, maintenance access, electrical isolation, and safe operator movement. The final layout should include transport routes and emergency exits. | Approve a dimensioned factory layout before shipment and check door, lift, floor-load, and ceiling limitations. | Installation layout showing machine envelope, service clearances, utility points, and anchoring locations. |
| Floor and Environment | Foundation, temperature, humidity, and cleanliness | Install on a stable, level industrial floor capable of supporting the machine and dynamic loads. Keep the area dry, adequately lit, and free from excessive dust, vibration, and direct water exposure. Follow the supplier’s stated temperature and humidity limits. | Inspect the floor, ambient conditions, lighting, ventilation, and housekeeping before installation. | Pre-installation checklist with floor level, access conditions, ambient measurements, and photographs. |
| Safety Design | Guards and access protection | Moving needles, blades, belts, gears, pinch points, and rotating components should have fixed or interlocked guards. Guards must not be easily bypassed during normal operation. | Perform a documented risk assessment and inspect all access points during the factory acceptance test. | Risk assessment aligned with ISO 12100 principles, guard inspection record, and safety-function test results. |
| Emergency Controls | Emergency-stop and restart prevention | Emergency-stop devices should be readily accessible, clearly marked, and designed so that stopping does not create an additional hazard. The machine should not restart automatically after power restoration or emergency-stop reset. | Test each emergency-stop location, reset action, power interruption, and controlled restart sequence. | Safety test report referencing the applicable machinery electrical and control-system requirements. |
| Electrical Safety | Control cabinet, grounding, and isolation | Provide a main isolator, protective grounding, correctly labelled terminals, short-circuit protection, and documented wiring. Electrical equipment should be designed and verified against the applicable version of IEC 60204-1 or the destination country’s equivalent requirements. | Conduct visual inspection, protective-earth continuity testing, insulation testing where applicable, and functional checks. | Electrical inspection record, wiring diagram, component list, and control-cabinet photographs. |
| Operator Safety | Ergonomics and access | Loading points, adjustment controls, displays, and routine maintenance locations should be accessible without unsafe reaching, climbing, or exposure to moving parts. Provide suitable lighting and clearly identified controls. | Observe normal operation, threading, adjustment, cleaning, jam removal, and tool-change procedures. | Operator training record, safe-work instructions, warning labels, and approved operating procedure. |
| Noise and Workplace Conditions | Noise, heat, dust, and waste | Request a measured sound-pressure value under operating conditions. Provide thread-waste collection, fabric-trim handling, ventilation, and hearing protection requirements where necessary. Local occupational exposure rules remain applicable. | Measure noise at the operator position during representative production and inspect waste-control arrangements. | Noise measurement record, workplace risk assessment, and environmental or occupational compliance checklist. |
| Documentation | Manuals and technical files | Supply operating, installation, maintenance, lubrication, troubleshooting, electrical, pneumatic, spare-parts, and safety manuals in the agreed language. Include revision numbers and machine serial identification. | Review documents before shipment and confirm that drawings match the delivered machine. | Controlled document package delivered electronically and, where required, in printed form. |
| Factory Acceptance Test | Pre-shipment performance approval | The test should cover production speed, seam quality, dimensions, sensor operation, emergency stops, alarms, changeover, power interruption, and continuous running. Use buyer-approved materials wherever possible. | Run a mutually agreed test period and record results against measurable acceptance criteria. | Signed FAT protocol, videos or photographs, defect records, and a list of open corrective actions. |
| Installation and Commissioning | On-site setup responsibility | The contract should identify who provides unloading, positioning, anchoring, electrical connection, air connection, calibration, trial production, and operator training. Remote commissioning should include defined response times. | Use a signed installation checklist and verify production after all utilities are connected. | Installation completion certificate, commissioning report, training attendance sheet, and punch-list closure. |
| Warranty | Coverage period and exclusions | A 12-month warranty from commissioning or 18 months from shipment is a common commercial structure; the exact trigger must be written in the contract. Define coverage for workmanship, electrical components, mechanical parts, travel, labour, consumables, misuse, and unauthorised modification. | Compare the warranty certificate with the purchase contract and commissioning date. | Signed warranty terms, claim procedure, service response time, and remedy options such as repair, replacement, or credit. |
| Spare Parts | Start-up and two-year spare-parts plan | Include needles, bobbins or looper components where applicable, knives, belts, sensors, fuses, relays, filters, lubricants, tension parts, clamps, and other wear items. Quantities should reflect expected operating hours and changeover frequency. | Check the parts list against the bill of materials, maintenance schedule, and recommended replacement intervals. | Illustrated spare-parts catalogue with part numbers, specifications, prices, shelf life, and recommended stock levels. |
| Parts Availability | Lead time and interchangeability | Request stated delivery times for critical parts, minimum order quantities, packaging method, and whether standard industrial components can be sourced locally. Critical electrical and control components should have an approved replacement procedure. | Obtain written lead-time commitments and verify part identification using drawings or photographs. | Service-level agreement with target quotation time, dispatch time, logistics terms, and obsolete-part notification process. |
| Maintenance | Preventive maintenance workload | The manual should identify daily, weekly, monthly, and running-hour maintenance tasks, including cleaning, lubrication, tension checks, fastener inspection, sensor cleaning, and belt or knife replacement. | Review the maintenance schedule with the intended operator and maintenance team. | Maintenance checklist, lubrication chart, required tools, estimated task time, and lockout or isolation instructions. |
| Training and Service | Technical support and training scope | Training should cover safe operation, threading, product changeover, parameter setting, fault diagnosis, cleaning, preventive maintenance, and spare-parts replacement. Define language, training hours, remote-support channels, and escalation contacts. | Require operators to complete a practical competency check using the actual machine. | Training agenda, attendance records, competency checklist, service contact list, and escalation timetable. |
| International Shipment | Packing, corrosion protection, and delivery terms | Specify export packaging, moisture protection, lifting points, centre of gravity, shock or tilt indicators where needed, container dimensions, gross weight, and the agreed Incoterm. Sensitive electrical and sewing components should be protected against moisture and impact. | Inspect packing photographs before shipment and record package condition at arrival. | Packing list, commercial invoice, shipping marks, loading photographs, installation tools list, and damage inspection report. |
| Total Cost of Ownership | Operating and lifecycle cost | Compare purchase price together with installation, utilities, labour, consumables, planned maintenance, spare parts, training, shipping, duties, downtime risk, and end-of-life disposal. A lower initial price may not provide the lowest lifecycle cost. | Prepare a three- to five-year cost model using the buyer’s production volume and local utility prices. | Commercial comparison sheet showing capital cost, annual operating cost, maintenance cost, spare-parts budget, and expected payback assumptions. |
