A checkweigher machine is considered important in the pharmaceutical industry to offer high weighing accuracy and precise measurements. This article will help you make the correct decision on which checkweigher machine is best for you. Some of the major considerations, such as accuracy, speed, compatibility with products, and how to fit the machine into your current production line, will be discussed. We will take you through the whole process that you should know about checkweigher machines.
What Is a Checkweigher Machine?
A checkweigher is a machine that you can use in pharmaceutical manufacturing to measure the weight of every item in the production line. It matches the products with the weight limit that is established, so that all the products will fall within the weight limit. When a product is either underweight or overweight, it is automatically rejected by the machine on the line.
This is to ensure dosage is preserved, the process of regulations, and wastage of the products. Even the smallest weight change is identified by pharmaceutical checkweighers so that only products that comply proceed to packaging and distribution.
How Do Checkweigher Machines Work?
Checkweigher machines are also part of pharmaceutical manufacturing processes, where every product is of a specific weight.
· Weighing Process
Products are loaded onto the checkweigher through a conveyor belt and are spaced out to avoid overlapping. Load cells below the conveyor sense the weight of every item as it scans over the weighing platform. These sensors convert the weight into an electrical signal that is sent to the control unit to analyse.
· Data Processing
The control unit compares the actual weight to some acceptable limits that are stored in the memory of the control unit. Based on this comparison, the product can be concluded to be within the weight range. The high accuracy, along with repeatability, can be achieved due to the advanced algorithms needed in the pharmaceutical setting.
· Rejection Mechanisms
When a product has been found to be either underweight or overweight, the checkweigher triggers a rejection system to pull it out of the production line. Normal rejection techniques are:
- Push Arm: A pushing mechanism pushes out of the conveyor the product that does not fit.
- Air Jet: This is where the item is shot off the line by a burst of air.
- Drop Flap: A portion of the conveyor will fall, and the product will fall into a collection bin.
- Diverter: A diverter is a guide that will steer the item on a different conveyor to proceed with processing.
Types of Checkweigher Machines in Packaging
If pharmaceutical companies are trying to ensure the conformity and the quality of their products, it is essential to be aware of the various types of checkweigher machines. Below are the primary types:
· Inline Checkweighers
Checkweighers are configured on the production line to enable verification of the weight of products in real time when they pass through the production process. With this assimilation, it becomes possible to monitor continuously and non-invasively during the production process. They are important because they play a very critical role in maintaining consistency in weight standards.
· Standalone Checkweighers
Standalone checkweighers are not attached to the rest of the production line and allow the quality to be controlled at different stages of production. Specifically, you can use them for batch sampling and offline inspection and apply them to a wide range of quality assurance schemes.
· Multi-Lane Checkweighers
Multi-lane checkweighers are essentially multiple weighing lanes in which more than one product can be checked simultaneously. In so doing, it provides improved throughput and efficiency and is therefore ideal in high-volume pharmaceutical packaging lines. They can be very useful in dealing with a variety of product sizes and packaging configurations.
· Portable Checkweighers
Portable check weighers are small and mobile devices that can be moved quickly inside the production plant. You can configure them and install quickly, and rearrange to suit different production lines or zones that need weight checks. They are suitable for use in a space-constrained environment or for use in weight stations that will be constructed in a temporary setting.
The choice of a type of checkweigher machine is determined by the peculiarities of production, space conditions, and regulations. Within the availability of the accuracy and the compliance of pharmaceutical products from different forms, all varieties are donning their very own advantages.
Applications in Packaging Industries
The checkweigher seems to be quite important, especially in the packaging process of pharmaceutical products. These are the key applications:
· Pharmaceuticals
Checkweighers have been introduced to pharmaceutical packaging to check the weight of each unit: pills, capsules, and vials. They will help you during the process of underfilling or overfilling to maintain accuracy and integrity. Traceable weigh information allows checkweighers to easily meet FDA 21 CFR and DSCSA regulations.
· R&D Laboratories
Check weighers are utilized in research and development labs where the weight of small-scale batches is required to be measured precisely. They help to check the consistency of the formulations, as well as the quality control of the processes in the laboratory. So small and precise that they can be used in laboratories where space is limited and accuracy is critical.
Key Benefits of Implementing Checkweighers
Checkweighers offer a variety of benefits in pharmaceuticals, such as product quality and regulatory compliance, to enhanced efficiency. Below are key benefits:
· Regulatory Compliance:
Checkweighers ensure that the pharmaceutical manufacturers maintain strict standards and regulations by ensuring every product is of the correct weight within the stipulated weight standards. Overall, compliance reduces the risk of product recalls and fines. Traceability and documentation needed by regulatory agencies are helped by automated verification of weight.
· Quality Assurance:
Inspect weighing machines for under- or over-filling products, repeating weighing if necessary, and checking for even filling of the dose. This on-site inspection enhances the quality of products and reduces the risk of product delivery to consumers with defects.
· Operational Efficiency
Checkweighers automate the weight checking mechanism to eliminate labor requirements as well as human errors. They can be added to production lines at little or no cost and provide continuous high-rate monitoring for improved general throughput and effectiveness.
· Cost Savings
Checkweighers lower the cost of maintaining a product through rework and avoiding products being given away. Proper weight control will reduce the amount of wastage of material and will maximize utilization of available resources, improving profitability.
Integrating checkweighers with pharmaceutical packaging lines is not only a time and cost-saving method, but is also a way of ensuring pharmaceutical compliance and quality.
Factors to Consider When Choosing a Checkweigher Machine
· Accuracy and Precision
It needs to be highly accurate to qualify as a pharmaceutical standard. Search for machines having electromagnetic force restoration (EMFR) technology or high quality load cell providing repeatability within milligrams.
· Speed and Throughput
The equipment to use is a checkweigher that fits the production line speed. Models that operate at high speed can handle hundreds of units per minute without loss of accuracy. Make sure that the machine is capable of efficient peak production.
· Product Characteristics
Look at the size, shape, and packaging of your products. In some instances, light handling stations, with flexible conveyors and the like, can be useful when handling sensitive products.
· Integration Capabilities
The checkweigher must be able to fit seamlessly with the existing production line machines (conveyors and labeling machines). I have chosen this because this incorporates the important part of its logical convenience of application.
· Compliance Requirements
Make sure the checkweigher is operating in accordance with industry-specific law, FDA 21 CFR Part 11, and Good Manufacturing Practices (GMP). Other features that help with regulatory compliance and quality assurance include data traceability and audit trails.
Conclusion
The appropriate choice of a checkweigher will allow the manufacturer to ensure the quality of products, increase the operational throughput, and minimize the costs. SaintyCo provides the best checkweigher systems designed to industry standards. To learn about our checkweigher systems and how they can improve your production line, contact us today!
