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Heat sealer calibration

Laboratory equipment maintenance,
repair, calibration and sales.

Heat sealer calibration

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    Heat sealer calibration

    Calibrating a heat sealer is crucial to ensure its accuracy and reliability in sealing materials effectively.

    Why do I need to calibrate my heat sealer?

    Calibrating a centrifuge is essential for ensuring its accuracy and reliability in laboratory applications. Centrifuges are used to separate components of a mixture based on their density. Proper calibration helps ensure that the centrifuge operates correctly and produces consistent results. Here are some reasons why you need to calibrate your centrifuge.

    Material variability

    Different materials have varying thermal conductivity and heat-sealing requirements. Calibrating the heat sealer allows you to adapt its settings to the specific characteristics of the material you are working with, ensuring a proper seal.

    Consistent seal quality

    Calibration helps maintain consistent and uniform seals across multiple batches of products. Consistency is essential for product quality and reliability, especially in industries where the integrity of the seal is critical, such as in food packaging or medical device manufacturing.

    Temperature accuracy

    The temperature of the heat sealer is a crucial factor in achieving a proper seal. Calibrating ensures that the temperature readings on the equipment are accurate, preventing overheating or underheating, which can lead to seal failure.

    Sealing time adjustment

    The sealing time is another parameter that may need calibration. Different materials may require varying durations of heat exposure for optimal sealing. Calibrating the sealing time helps in achieving the right balance between effectiveness and efficiency.

    Compliance with standards

    In certain industries, there may be regulatory standards or guidelines that dictate the sealing requirements for specific materials. Calibrating your heat sealer ensures that it meets these standards, helping you avoid compliance issues and potential product recalls.

    Equipment wear and tear

    Over time, the components of a heat sealer can experience wear and tear, affecting its performance. Regular calibration helps identify and address any issues, ensuring the equipment remains in optimal working condition.

    Productivity and efficiency

    Properly calibrated heat sealers contribute to increased productivity and efficiency in manufacturing processes. By ensuring that the equipment operates at its best, you can reduce the likelihood of seal failures, minimise material wastage, and enhance overall production efficiency.

    Cost savings

    Calibrating your heat sealer can contribute to cost savings by preventing errors, reducing rework, and extending the lifespan of the equipment. It helps you avoid potential costs associated with product defects and recalls.

    In summary, calibrating your heat sealer is essential for maintaining consistent seal quality, adhering to industry standards and ensuring the reliability and efficiency of your manufacturing processes. Regular calibration is part of good maintenance practices and contributes to the overall success of your production operations.

    How Henderson Biomedical can help

    Our company specialises in the calibration of both rotary and impulse heat sealers. We are able to calibrate the speed, force and temperature of your heat sealer. Our team of expert service engineers can visit your site to perform a calibration on a day and time suitable to you. Alternatively, you can send your heat sealer into our workshop for calibration.

    Questions? You’re covered.

    Heat sealer calibration: an overview to calibrating your heat sealer

    Heat sealer calibration is often an important element in Sterile Service Departments (SSDs). Users will want to know if their heat sealer is performing as it should be. Calibration is the easiest way to identify this.

    We have already taken a look at centrifuge calibration in a previous blog back in late 2017. In this month’s blog, we will take a closer look at heat sealer calibration.

    What is a heat sealer calibration?

    It is important to note that there are actually three elements to calibrating your heat sealer. Think of it like baking a cake. You will probably have key ingredients such as eggs, flour and butter.  Without all three of these in the right quantities, you won’t produce a very good cake.

    Heat sealer calibration is similar. You need to make sure you calibrate all three parameters in order to guarantee a good seal. These parameters are speed, temperature and force. You measure speed in metres per minute and temperature in degrees Celsius (°C). Whilst you measure the force in Newtons (N). It is no good just calibrating one of these parameters and not the others. For example, if the temperature is at an optimum level, but the speed is too slow, the pouch will melt. Similarly, if both the temperature and speed is right, but the force is not enough, the pouch will not seal properly.

    What steps are involved in heat sealer calibration?

    It is possible to perform a heat sealer calibration using specially calibrated equipment. For temperature, this involves placing a calibrated thermometer on the heater bars. Speed involves measuring the time is takes for a mark placed on the transport belt to perform one revolution. You measure this using a calibrated tachometer fitted with a customised wheel.  Finally, force can be calibrated by taking out the part of the heat sealer which determines the force. The part is then rigged up to a customised strain gauge and the force is measured in Newtons.

    Heat sealer calibration frequency. How often should I calibrate my heat sealer?

    How often you calibrate your heat sealer will of course depend on how often you use it. Usually, one annual calibration is sufficient, but some very busy SSDs and manufacturing sites may want to have two calibrations a year. Furthermore, you would usually combine a calibration with a preventative maintenance service.

    Calibration is actually only one element that an SSD can employ to check their heat sealer is working as intended. There are also testing methods such as Seal Check, Ink Test PRO and pouch destruction. I have covered this topic in a previous blog back in 2016. You can employ these additional testing methods at regular intervals to compliment the heat sealer calibration. For example, Seal Checks and Ink Tests can be carried out every day, before production starts. Furthermore, you can also carry out a pouch destruction test every 3 to 6 months.

    How Henderson Biomedical can help

    Henderson Biomedical has been calibrating heat sealers for over 20 years. This includes rotary and impulse types. We are the official UK distributor of Hawo, a leading German manufacturer of heat sealers. However, we are familiar with all types of heat sealer and we are able to calibrate other makes including Gandus, Famos and Astrapac. For more information, you can contact our friendly team by calling 020 8663 4610 or you can email us using the contact form.

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