Discontinuous NIR heat-bond-laminator
for heat-sealable adhesive tape

Use:

Lamination of heat-sealable adhesive tape on formed elastomer rubber profiles with fixed length (e.g. weather strips).

Machine Performance:

Cycle time of e.g. 40 sec for 2 parts of 1,200 mm in length due to high-efficiency NIR heating technology (high energy efficiency).

Tolerances at initial and end point: approx. +/- 1 mm.

Controlled production process due to closed-loop technology with direct temperature sensing of the adhesive tape and the rubber profile by pyrometer with visible light spot.

Machine Design and Functional Description:

The basic machine consists of a stable, self-supporting welded steel construction on four locking lift rolls. This construction allows for flexible machine operation at different production sites. Connections for electrical equipment, pneumatic equipment and exhaustion are plug-in connections. Thus, installation and placing into operation at a different production site can be carried out within shortest time.

The transport units for tape transport, profile transport, lamination system and heating units are modularly ar-ranged on a base plate. Each unit can be individually adapted to different products (tape width, profile shape).

Product transport is carried out with a carrier, which is moved on a servo-controlled XY-axes system.

The exchange of this carrier can be carried out with a minimum need of tools within shortest time. Thus, extremely short set-up times for product change can be realized.

The adhesive tape is supplied to the product with constant and adjustable tape tension. The tape tension is controlled automatically by means of a traction-measuring unit. This is a condition for a stable tape-application process.

The lamination process is carried out with controlled stretch due to a synchronized speed control between the driven vacuum wheel and the servo-controlled X axis (master slave). A proportional valve controls the contact pressure. Thus, tolerance variations of the profile can be compensated.

NOK parts processing in case of process-parameter deviations.

The heating units are cooled by means of water circulation.

Arising gases are evacuated through exhaust ducts.

Note: These components and modules are essential for a process-reliable processing of the tape, according to the parameters given by the tape manufacturer.

Benefits:

Highest possible security due to quality-controlled process

Low power consumption due to NIR technology

Fast product change – minor downtimes

Options/Additional Modules:

Integrated heat tabber (for application of pull-off tabs)

Units for marking of NOK parts

Cooling unit for water cooling

Product nests in a drum unit instead of the product carrier for a reduction in cycle time of approx. 50 %

Approximate Consumption:

Electricity: 400 VAC, 6 kVA

Pneumatics: 6 bar compressed air, filtered not lubricated, 120 l/min

Cooling water: necessary water cooling 4 kW, flow temperature 15 - 60°C

Exhaust air: necessary suction output 200 m³/h

Approximate Dimensions:

Length 3,600 mm, depth 1,000 mm, height 1,850 mm (2,700 mm with open pneumatic lift gate)