Impulse Sealers for Medical and Pharmaceutical Applications

Impulse Sealers for Medical and Pharmaceutical Applications


Medical impulse sealers, also called sanitary sealers, are engineered with enhanced process control, user interface functionality, and seal validation capability required for use in the medical and pharmaceutical industries.

For use in the medical and pharmaceutical industries, impulse sealers, also called sanitary sealers, seal thermoplastic, sterilized rolls and tubing with airtight and watertight bonds but, in addition, are engineered with enhanced process control, programmability, user interface functionality and seal validation capability required for medical or clean room compatibility.

Common Features
Their basic operation is similar to all impulse sealers: using a controller to produce short-term, intermittent and synchronized electrical impulses to power the heat and cooling cycles to form secure seals on polyethylene, foil, laminates, Tyvek, or thermoplastic materials. Most medical impulse sealers are tabletop or freestanding units set up for semi-automatic with foot pedal control and automatic operation. The cutting blade option is also available. Ready indicator lamps or alarms illuminate or sound, respectively, to indicate the completion of the sealing cycle. They can seal multiple layers of materials up to up to 11 mm thick. Sealing lengths vary by make and model, generally up to 36 inches. The maximum frequency is about 3,000 bags per day. Heavy duty models are available for heavier materials.

Unique Features of Medical Impulse Sealers

Medical impulse sealers have features unique to medical applications. They are:

Type of Seal: The seal produced is an embossed, honeycomb texture that is 10 mm wide for added seal security.

Pneumatic Inputs: They require not only electrical power but also pressurized air to operate. Generally, air pressure is in the range of 60-80 psi.

Special Medical Packaging: They use special sanitized, pre-made medical pouches, rolls or tubing that are mounted to the top of the units.

Single or Double Sided Heating: For greater flexibility in the type and width of materials, medical sealers can be selected for single- or double-sided sealing. Single-sided heating is ideal for lighter materials or bioactive seals, while double-sided heating is best for heavier materials. Sensors are mounted within the unit’s jaws to more closely monitor sealing temperature and provide feedback to the temperature controller.

Enhanced Digital Control: This is the primary difference between medical and standard impulse sealers. Digital temperature controller with readouts, programmable pressure switches, calibration and verification of controller outputs all provide a greater control of the sealing operation.

Emergency Stop Button: If sealing temperature or pressure is outside of the programmed parameters, an alarm will sound. The sealing operation can be stopped with an emergency stop button located on the unit.

Computer Interfacing: Some medical impulse sealers can be interfaced to a computer via a USB port to provide the graphing of test results as well as the storing of test data.

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