Standard round tablets are widely adopted in the pharmaceutical industry due to their simple manufacturing process and cost-effectiveness. Their geometric characteristics offer distinct application advantages during the blister packaging process:
Convenient Mold Machining: Standard round blister molds (forming molds and sealing molds) require no complex programming during CNC machining; they can be efficiently manufactured even using traditional milling machines.
High Feeding Smoothness: The feeding stage is critical in blister packaging, as poor feeding often leads to increased defect rates and limited production efficiency. With excellent fluidity, standard round tablets help minimize defective products caused by feeding flaws, lower manual intervention, rejections, and downtime frequency, thereby effectively enhancing overall equipment OEE (Overall Equipment Effectiveness).
Blister Feeders Selection Guide for Round Pills
Standard round tablets are compatible with almost all types of feeders. To meet varying production demands and tablet characteristics, we provide three core equipment options:
This feeder uses brush agitation to feed tablets into blister pockets, recommended for high-hardness or coated tablets.
Technical Features: Round tablets (especially smooth-coated ones) exhibit good fluidity when agitated, ensuring stable feeding performance. The equipment requires no format part changes during product switchovers (Format parts are not required), making it ideal for multi-product, small-batch production. It is compatible with both intermittent and continuous motion blister machines, offering high cost-performance in medium-to-low speed models.
Capacity Reference: On standard flat-plate blister machines, the punching speed is approximately 30–50 cycles/min. Taking a PVC 260mm width model (punching 4 plates per cycle) as an example, the capacity can reach approximately 120–200 plates/min.
Tablet Size Influence: Fluidity and production speed perform best when the tablet diameter is 7–10mm and thickness is 5–6mm. Sizes that are too large/small or thicknesses that are too thin/thick will disrupt the fluidity during agitation, leading to reduced production speeds.
Limitations: Generally not applicable for Alu/Alu cold-form packaging (because the diameter of cold-formed pockets is typically much larger than the round tablet itself). However, if the round tablet is relatively thin (thickness within 4mm) with a shallow drawing depth—making the cold-formed pocket diameter approximate a thermoformed pocket—it can be evaluated for use.
2. Multi-Product Co-Line Option: Vibratory & Rolling Drum Feeders
If the Universal Blister Feeder cannot meet your capacity requirements, the Vibratory Feeder is an ideal alternative. For low-hardness or uncoated tablets, this feeder prevents breakage, surface scratching, or powder shedding caused by brush agitation. The equipment utilizes vibration to guide tablets into vertical drop channels, which are then conveyed by a moving webbing at the bottom to accurately feed them into the blister pockets.
Technical Features: The cylindrical feature of standard flat or shallow concave tablets prevents jamming or clogging while aligning inside the drop channels. The equipment is reasonably priced, requires only minor parts replacement during changeovers, and is extremely easy to clean—making it highly friendly for multi-product co-line production.
Cold-Form Packaging Derivative Application: When applied to Alu/Alu cold-form blister packaging, a rotating drum can be added below the drop channels (deriving into the Rolling Drum Blister Feeder). Tablets first enter the drop channels, pass into the drum, and are then precisely fed into the cold-formed pockets by the rotating drum, maintaining excellent feeding performance.
Capacity Reference: Meets medium-to-high batch production requirements. With moderate-sized, coated, and non-deep-concave round tablets, punching speeds can reach up to 120 cycles/min. For a PVC 260mm width machine (4 plates per cycle), theoretical capacity can reach 480 plates/min (Note: Actual capacity is subject to comprehensive factors such as tablet size, concavity degree, and hardness, and must be evaluated through physical sample testing).
Limitations: For deep-concave tablets (biconvex cross-section) or tablets with excessive thickness tolerance, vertical jamming inside the drop channels may easily occur, leading to feeding failure.
If your production focus is on large volumes and high output, the multi-tube feeder is the ideal solution.
Technical Features: Configured with multiple internal feeding tubes, each tube corresponds to a specific blister pocket, allowing a single drop to cover a large web area of cavities below. The cylindrical nature of round tablets prevents clogging inside the tubes, enabling high-capacity operation when paired with high-speed blister machines. This feeder is compatible with both flat intermittent and rotary continuous blister machines, and suits both thermoformed and cold-formed blister packaging.
Capacity Reference: Under conditions of smooth feeding for flat or shallow concave tablets, a 260mm width machine model (pocket grid size 80mm×45mm, punching 3 plates per cycle) can achieve capacities up to 600 plates/min.
Limitations:
Strict Size Requirements: Demands high consistency in tablet thickness (thickness tolerance must be controlled within ±1%). Excessive thickness variation or deep-concave tablets will cause tablets to jam against each other inside the feed tubes.
Maintenance Cost: High equipment investment, and due to the large number of internal feed tubes, routine cleaning is relatively complex.
To accommodate diverse production models, we provide a comprehensive machine matrix. (Note: All capacity references below are based on easily fed, standard coated shallow concave round tablets and a 57×80mm blister card, unless otherwise specified.)
1. Agile & Multi-Product Production (Small to Medium Batches) Recommended Series: BMP Platen Blister Machines The BMP series utilizes a cGMP-compliant balcony structure, ensuring effortless daily cleaning, intuitive operation, and highly efficient format changeovers.
2. High Capacity & Flexibility (Medium to Large Batches) Recommended Series: BMR Rotary Blister Machines Engineered with a fully servo-driven architecture, the BMR series perfectly balances high-speed rotary continuous sealing with production flexibility.
Standard Model (BMR180): Output up to 400 blisters/min.
3. Ultra-High Volume Industrial Production Recommended Model: DPH390 Rotary Blister Machine Designed for maximum output, featuring a massive 390mm web width. Output reaches up to 800 blisters/min (based on a 57×90mm blister size). It offers two configurations: a full servo-driven setup for peak operational flexibility, and a mechanical transmission setup for budget-conscious procurement.
4. Budget-Friendly & Space-Saving Operations Recommended Series: DPP Traditional Platen Machines This series adopts a traditional top-to-bottom layout (non-balcony). Its compact machine width provides an excellent space-saving advantage while remaining highly economical.
Top Recommendation (DPP260Ki): Output up to 200 blisters/min. (Models DPP350 and DPP500 are also available for higher capacities with web widths of 350mm and 500mm, respectively).
Compact Model (DPP150): Web width of 150mm. Output up to 100 blisters/min.
* Capacity Disclaimer: Actual production capacity is directly influenced by tablet characteristics (shape, size, hardness, and coating), which dictate feeding efficiency—easier feeding translates to higher capacities. Additionally, for a given web width, smaller blister card dimensions allow more cards to be punched per cycle, thereby increasing the unit-time output.
