| Bottle shape and dimensions | Record bottle height, body diameter or width, taper, shoulder shape, and any recessed or textured areas. Include drawings or representative samples. | Round bottle: 65 mm body diameter, 180 mm height. Measure the actual production container rather than relying only on nominal capacity. | Round bottles commonly suit wraparound labeling. Flat or oval bottles may need front-and-back labeling with guides or a container-stabilizing system. Irregular shapes may require custom handling and testing. |
| Container material and stability | Identify the container material, wall stiffness, surface finish, and whether bottles are empty or filled during labeling. | Rigid glass or PET bottles are generally easier to handle than lightweight, flexible containers; confirm performance with production samples. | Lightweight or flexible bottles may need gentler side belts, controlled pressure, or additional support to prevent tipping, deformation, or scuffing. |
| Label type and application | Specify pressure-sensitive labels, glue-applied paper labels, or shrink sleeves, plus the number and position of labels on each bottle. | One pressure-sensitive wraparound label, or two pressure-sensitive labels on the front and back. | The label format determines the application method and machine configuration. Shrink sleeves typically require sleeve placement and a separate heat-shrinking process. |
| Label dimensions and roll details | Provide label width and height, gap or mark details, roll direction, core diameter, maximum roll diameter, and unwind direction. | Example label: 100 mm high × 180 mm long. Confirm all roll specifications with the label converter before ordering equipment. | These details determine whether the label web, unwind assembly, sensors, and applicator can run the intended label without frequent roll changes or feeding issues. |
| Label position and accuracy | Define label height, distance from the bottle base or shoulder, overlap or gap, and acceptable placement tolerance. | Example target: label center positioned 80 mm above the bottle base, with a documented tolerance agreed during testing. | Consistent positioning may require bottle orientation, registration marks, sensors, or a wrap belt. Final achievable accuracy depends on bottle and label consistency, machine setup, and operating conditions. |
| Required production rate | Calculate the required good bottles per hour from shift length, planned output, product mix, and expected downtime. | 6,000 bottles over an 8-hour shift equals 750 good bottles per hour on average, before accounting for breaks, changeovers, and stoppages. | Compare the required sustained output—not just a supplier's maximum speed—with the machine's performance on your bottle and label combination. Request a witnessed run test. |
| Product range and changeovers | List bottle sizes, label sizes, recipes, and how often operators switch between products. | Three bottle formats and two label sizes, with one changeover per shift. | Frequent changeovers increase the value of quick-adjust guides, clear setup references, stored recipes, and tool-less adjustments. Ask for a timed changeover demonstration. |
| Line layout and integration | Document conveyor height and direction, available floor space, bottle spacing, upstream and downstream equipment, and required line signals. | Infeed from the left, continuous conveyor, and an existing downstream inspection station. | Check conveyor compatibility, line speed control, accumulation needs, guarding, and start/stop communication before specifying the machine. |
| Inspection and rejection | Decide whether the line must detect missing, skewed, wrinkled, or incorrect labels and what should happen to nonconforming bottles. | Camera checks label presence and basic position; a reject device removes detected out-of-spec bottles. | Vision inspection and rejection add equipment and validation requirements. Define inspection criteria and test known defects before acceptance. |
| Operating environment | Specify temperature, humidity, washdown practices, dust, product splashes, and cleaning chemicals. | Frequent wet cleaning may require suitable guarding, electrical protection, and compatible materials. | Choose construction and protection levels that match the actual cleaning and production environment; confirm chemical compatibility with equipment suppliers. |
| Staffing, maintenance, and support | Define operator experience, preventive-maintenance capability, spare-parts expectations, and support response needs. | One operator runs the line; maintenance staff perform routine checks and basic adjustments. | Evaluate access to wear parts, manuals, training, troubleshooting tools, and local service. Include these needs in the purchase specification. |
| Acceptance testing | Agree on test bottles, label rolls, run duration, target speed, acceptable placement, reject criteria, and documentation before purchase. | Run the intended production formats at the agreed sustained rate and record output, defects, stops, and changeover time. | A representative acceptance test helps confirm that the complete bottle, label, and machine combination meets production goals—not just a theoretical speed rating. |