Softgel capsules are gel-coated one-piece pills that can hold oils, liquid nutrients, またはサスペンション. ツーピースハードカプセルとは異なります。, softgels are formed, filled and sealed in one continuous step. a ソフトジェルカプセル化機is an electromechanical system that spins two gelatin ribbons while injecting liquid fill between them. This ensures each softgel has a hermetically-sealed shell and precise dose. このフレンドリーなガイドでは, we’ll explain how softgel machines work, outline the fullsoftgel manufacturing process, and cover key features (容量, 正確さ, GMP準拠) to help you choose the right equipment. 最後までに, you’ll see why softgels are popular in pharmaceuticals and nutraceuticals, and how today’s automated lines (2026 edition!) can make production fast, クリーン, and consistent.
Softgels are soft gelatin capsules filled with oil or liquid ingredients. A modern softgel encapsulation machine forms, 埋める, and seals these capsules in one go. The result is a glossy, uniform capsule that is easy to swallow and airtight by design.
What is a Softgel Encapsulation Machine?
a ソフトジェルカプセル化機 (also called a softgel machine or soft capsule machine) is a specialized rotary-die system for producing soft gelatin capsules.Unlike two-piece hard capsules, a softgel machine melts a gelatin/plasticizer mix into two continuous ribbons and seals them together around a precise liquid fill. In one step the machine forms the shell and injects the active liquid, yielding a one-piece watertight capsule. Softgel machines are essential in pharmaceutical and nutraceutical industries. 例えば, 多くの 魚油 または vitamin supplementsare delivered as softgels, which are easy to swallow and effectively seal oils and sensitive ingredients.
Key components typically include agelatin melter (to dissolve and liquefy the gelatin), casting drums (that form flat gelatin ribbons), ある fill pump and injection wedge (metering the liquid fill), rotary die rolls (to shape and seal capsules), そして conveyors/dryers (to remove moisture). Each part plays a role in producing uniform capsules. Modern machines are controlled by a PLC touchscreen, and built of stainless steel to meetGMP 標準.
Why softgels?Softgel capsules are favored in pharma and supplements because they can hold oils, サスペンション, or sensitive liquids in a stable shell. They boost bioavailability and are easy to swallow. Because the shell is sealed, air-tight softgels protect oils (like fish oil or vitamin oils) and mask tastes. They also offer creative shapes and colors for branding. (Softgels are the clear capsules you see for vitamin E, omega-3.)
1. ゼラチンシェル混合物を準備する:Gelatin powder (from animal collagen or vegetarian source) is mixed with a plasticizer (usually glycerin or sorbitol) and water in a heated tank. The mix is held under vacuum to remove bubbles and aged (often 3–24 hours) to reach uniform viscosity and temperature. A color or opacifier (二酸化チタン) can be filtered in if needed. The result is a clear, elastic molten gelatin syrup ready for forming. High-grade (米国薬局) gelatin ensures consistency.
2. 充填材の準備: 同時に, the active ingredients (油, サスペンション, エマルジョン) are blended in a stainless tank with mixers. 油 (魚油, ビタミンブレンド) or gels are homogenized, and any powders (ビタミン, ミネラル) are milled fine (その周り 80 メッシュ) 停止されたままになる. Work under vacuum to remove air bubbles. Temperature is controlled (often 20–40°C) so the fill flows easily but won’t degrade sensitive components. Once uniform, the liquid fill is pumped into the machine’s fill hopper.
3. Ribbon Formation:The core of the process happens on the encapsulation machine. The warm gelatin syrup is pumped from the melter to two chilledcasting drums. Each drum spins and evenly coats the molten gelatin into a thin ribbon (usually ~0.8 mm thick). Cooling fans or coolant channels on the drums solidify the gelatin into stable sheets. Now you have two parallel gelatin ribbons moving in sync toward the filling station.
4. 充填, シーリング, and Cutting:Just before the die rolls, a heated injection wedge injects a precise dose of the liquid fill between the two ribbons. A synchronized pump controls the fill volume to ±1–3% accuracy. Immediately afterward, の rotary die rollspress the ribbons together. The dies cut out capsule shapes (ラウンド, 楕円形, 長方形の, 等) and fuse the edges of the gelatin around the liquid. Thanks to heat and pressure, the two layers of gelatin bond into one sealed capsule. Any excess gelatin (スクラップ) is scraped away. 結果: 個人, formed softgel capsules falling out onto a conveyor.
5. Separation and Conveying:As capsules exit the die area, a collection system (conveyor or chute) separates the finished softgels from leftover gelatin. A metal “scrap plate” guides trimmed edges away, so only capsules proceed. The conveyor gently carries the softgels to the drying unit. At this point each capsule is complete but still soft and moist inside.
6. 乾燥と研磨:Fresh softgels contain ~30–40% moisture. They enter a回転式乾燥機 (a rotating drum) where warm, clean air gently removes moisture. This may be followed by tray or cabinet drying for several hours to reach the final target moisture content. During drying, capsules become firm and shiny. Often a polishing or polishing drum applies a fine oil film to keep shells smooth. 乾燥後, the capsules are inspected and can be sorted, counted, and packaged.
Each of these steps is tightly controlled. Operators check ribbon thickness, 充填重量, and seal integrity throughout. Lab tests (burst tests, 体重チェック) ensure every batch meets specifications. The whole line must run at steady temperature and humidity (typically 20–25°C and 30–35% RH) to prevent shell defects. 要するに, softgel production is a precise, continuous process from start (原材料) to finish (dried capsules).
Empty softgel capsules in a mold. In a softgel encapsulation machine, two gelatin ribbons meet and a liquid fill is injected between them. The surrounding rotary dies then cut and seal the capsules in one step.
Key Components of a Softgel Machine
A modern softgel line consists of specialized modules. Here are the main parts and their roles:
Gelatin Melting Tank (保持タンク):A heated tank melts and stores the gelatin solution. Temperature is precisely controlled (~65–70°C) and kept under vacuum to degas the mix. An adjacentgelatin service tankholds the molten gelatin at process temperature and feeds the machine via heated pipes.
Fill Hopper and Pump: の medicine hopperholds the prepared liquid fill (oil or suspension). a servo-driven pumpor piston metering system then delivers an exact volume of fill to the injection wedge. Accurate dosing here (例えば. ±2%) 重要です. Systems often have heating/cooling to keep very viscous fills flowing smoothly.
Spreader Box and Casting Drums:The spreader box sits above the rotating drums and evenly distributes the gelatin onto them. Each drum spins and cools the gelatin into a continuous sheet or ribbon. Proper tension and cooling fans ensure uniform thickness. The drums’ smooth rotation is critical – any hiccup can cause ribbon tears.
Lubrication Rollers:Before the die assembly, lubricating rollers apply a very thin layer ofvegetable oil (例えば. MCT or light mineral oil)to each ribbon. This prevents the gelatin from sticking to the rollers or dies during sealing. Too much oil is avoided, as over-lubrication can prolong drying. This gentle coating ensures the ribbons glide smoothly into the die area.
Injection Wedge:This is the heart of filling. A heater/nozzle wedge injects the liquid fill between the incoming ribbons immediately before sealing. The wedge maintains a temperature (higher if using plant-based gel) so the ribbons bond correctly after the fill is added. It must align perfectly; even minor misalignment causes leaks. Sophisticated machines monitor wedge pressure and timing to ensure every fill is placed into a forming pocket.
Rotary Die Assembly:Two stainless steelダイローラーmesh together, each with cavities shaped as the final capsule. As the filled ribbons pass through, the dies press (and often slightly heat) the gelatin edges, sealing the capsule around the liquid. The die assembly also includes:
a stripper roller, which peels the formed capsules off the dies.
Die brushingto remove any gelatin from the die surface.
a mangle rollerto squeeze out excess gelatin scrap. The result is perfect, identical softgels.
Conveyor and Dryer: 封印後, capsules drop onto a stainless conveyor belt or chute. They move to a回転式乾燥機, which gently agitates them as warm air passes through. Tumble drying removes most moisture. After tumbling, capsules may be placed on trays for final drying and polishing, leaving them firm and sparkly.
制御システム:A PLC touchscreen controls all operations: pump speeds, drum temperatures, die rotation, 等. Alarms and sensors monitor temperature, 真空レベル, and capsule quality in real time. This automation makes high-throughput production possible with minimal operator intervention.
Understanding these parts helps in operation and troubleshooting. 例えば, a clogged nozzle affects fill weight, while a mis-timed die can cause bad seals. Regular maintenance of the spreader box, wedge, and rollers keeps capsules uniform.
Side view of the Softgel Encapsulation Machine
How the Softgel Machine Works
実務的には, ある ソフトジェルカプセル化機performs a continuous encapsulation cycle. Here’s a simplified sequence of actions during production:
Gelatin Flow:Warm gelatin flows from the melting tank to the spreader box, coating the drums to form ribbons.
Ribbon Formation:Each drum casts a thin sheet of gelatin. Cooling fans and drum jackets harden the sheets to the desired thickness.
Ribbon Alignment:The two ribbons converge at the center of the machine, one from each drum side.
Fill Injection:The injection wedge pierces between the ribbons and pumps a precise slug of liquid fill (油, ビタミン溶液, 等) between them. Each injection creates a cavity of fill.
シーリング:The ribbons, now enclosing fill, move into the die area. The rotary dies press them together, fusing the gelatin and cutting capsule shapes.
Capsule Ejection:Stripper rollers push the freshly made capsules off the dies onto a conveyor.
潤滑:Before sealing, the ribbons were lightly oiled to prevent sticking. 封印後, any tiny excess oil is often removed in subsequent drying.
乾燥:The capsules (still soft and moist) enter the dryer. After several hours of drying, their moisture content drops to a stable level.
This in-line method is efficient and produces consistent capsules. の rotary die processis the industry standard for softgels. Major manufacturers (Technophar, がある, ジンルパッキング) all use this design. Its continuous nature means high output: some modern machines make over 300,000 softgels per hour.
Softgel Capsule Manufacturing Checklist
When planning a softgel line or evaluating equipment, keep these factors in mind:
生産量:Match the machine size and number of dies to your output needs. Bench-top lab units (small scale) produce a few thousand per hour, while large production lines (with multiple die sets) can exceed 100,000–300,000 capsules/hour. Consider future growth – a slightly bigger machine might pay off in efficiency.
カプセルサイズ & 形:Ensure the dies support the capsule sizes you require (#0, #00, 等) and shapes (ラウンド, 楕円形, custom). Quick-change tooling is useful if you run varied products. Some producers demand non-standard shapes for branding; confirm the machine can handle your custom dies.
Fill Material:Softgel machines are built for liquids or pastes. If your product is a dry powder, you’d need a hard capsule filler, not a softgel machine. For oils or suspensions, the machine must have a compatible pump (some pumps handle high-viscosity oils better). Ask about oil- and paste-specific pump options.
自動化レベル:You can find半自動 そして 全自動 ソフトジェルカプセル化装置. A fully automated line feeds gelatin and fill continuously and runs hands-off, ideal for large pharma plants. Semi-auto units may need more manual feed or stops for cleaning. For high demand, automated is best. (In a buyer’s checklist, SaintyCo emphasizes “you should go for fully automated Softgel encapsulation machine”.)
工事 & クリーニング:Look for machines made of stainless steel (SUS304またはSUS316) with polished finishes. All surfaces should be FDA/CE-compliant and easy to clean (rounded corners, no hidden crevices). Good machines are designed for fast changeover: ホッパー, トレイ, and dies that lift out for cleaning. This helps maintain strict hygiene. Consider how quickly you can break down the line for sanitation.
Accuracy and Control:The machine’s fill pump and controls determine how precise your dosing will be. High-end machines use servo pumps and PLC control to hit tight weight tolerances (often ±1–3% of target). Built-in in-process checks (ロードセルまたはセンサー) can detect underfills or overfills in real time. Clear HMI with touchscreens lets operators adjust settings quickly (スピード, 充填量, 等).
GMP and Certifications: 医薬品用途向け, equipment should comply with cGMP design. That means ultra-smooth welding (<0.8 μm polish), sealed motor enclosures, と材料 (like certified 316 steel) that meet FDA guidelines. Reputable machines carry CE marking (European safety standard), and may have UL/CSA as well. 彼らは, 例えば, designs its machines to cGMP standards for quality and safety. Always verify the supplier provides documentation of compliance and any necessary IQ/OQ/PQ validation support.
空間 & Utilities:Softgel lines can be large. Check the footprint and ensure your plant can accommodate the height (dryers can be tall). Also consider vacuum, water cooling (for drums), and power requirements. Some systems use awater-circulation vacuum pumpto pull air from the gelatin; others use compressed air systems. Modern lines often come with UPS backup for critical controls.
サポート機器:Besides the encapsulator, plan for upstream/downstream equipment. You’ll need a gel melter tank, ミキサー, ふるい, and possibly acolloid millor homogenizer for your fill. 下流, ある ポリッシャー (to shine capsules), inspection machine (to sort rejects), and counting/packaging machines are common. The supplier should advise which extras are needed.
要約すれば, choose a machine that fits your capsule size, アウトプットのニーズ, and product type. Balance performance (スピード, 正確さ) against cost. Buying tips from experts include checking the brand’s track record, ease of changing tooling, and included services. A good supplier will guide you through lab testing, 脂肪, and on-site commissioning.
Why Softgels? 利点とアプリケーション
Softgel capsules offer several advantages over other dosage forms:
Improved Bioavailability:The liquid fill (often an oil solution) allows better absorption of fat-soluble nutrients (vitamins A, D, e, k, オメガ3). They can deliver faster or more consistent release of active ingredients than dry pills.
飲み込みの容易さ:Softgels have a smooth, rounded shape and feel. Many patients (especially children and elderly) find them easier to swallow than large tablets.
Tight Sealing:Because the gelatin shell is hermetically sealed, softgels prevent oxidation of sensitive oils and mask odors/flavors. The airtight seal protects the fill from moisture and oxygen.
Custom Branding:Softgels can be made in a variety of shapes (cylinder, 三角, 等), サイズ, and colors for brand differentiation. Additives in the shell can make them opaque or pastel-colored, which is harder with two-piece capsules.
Versatile Fill:Unlike tablets, softgels can contain mixtures of liquids, サスペンション, or soluble powders. This is great for botanical extracts or combination formulas that are easier to suspend in oil.
Industries that use softgel encapsulation machines include pharmaceuticals (ビタミン, fish oil drugs), 栄養補助食品 (サプリメント), and even cosmetics (nutraceutical beauty oils). 例えば, plant-based gelatinor starch softgels are on the rise to meet vegan and halal markets. The machine’s ability to handle specialized fills (like aloe, CBD oil, essential oils) makes it a key asset.
結論
Softgel encapsulation machines bring sophisticated fluid science into a simple, automated process. By casting two gelatin ribbons, injecting liquid between them, and sealing the capsules with precision dies, these machines turn raw ingredients into high-quality softgel capsules. In this guide we covered the entiresoftgel manufacturing process— from material preparation to drying — and highlighted what makes a machineGMP-compliant そして効率的. We saw that therotary die methodis the industry’s gold standard, 高速化を可能にする, uniform production of vitamin, 魚油, and botanical softgels.
Whether you’re a pharmaceutical production manager, an R&D team member, or a procurement engineer, understanding these steps will help you get the most out of your equipment. Softgels continue to grow in popularity, and by 2026 the technology is more reliable and versatile than ever. If you’re looking to expand or upgrade your softgel production line, now’s the time to act.
Ready to boost your softgel production?私たちのチームに連絡してくださいto discuss custom softgel encapsulation systems, 価格設定, and GMP-certified options. Let us help you choose the perfect softgel machine for your operations – and turn your capsule production into a streamlined, high-quality process.
Common Problems & トラブルシューティング (よくある質問) on Softgel Encapsulation Machine
Why are my softgel capsules leaking or bursting?
Leaks often indicate a weak seal. Common causes include gelatin ribbon that is too wet/soft (from high humidity or over-plasticization), misaligned die rolls, or too low sealing temperature/pressure. ソリューション: check that the gelatin shell viscosity and mix ratio are correct; adjust glycerin vs. sorbitol levels; ensure the die rolls are aligned and warmed (match spec, usually ~45–55 °C); and verify the time/pressure of the sealing nip. Also inspect the lubrication system (excess oil can weaken sealing). Strict humidity control in the encapsulation room (例えば. 30–35% RH) helps prevent cold, brittle seals.
How can I prevent air bubbles in the capsules?
Air bubbles can come from trapped air in the gelatin mix or in the fill. Always vacuum-degas the molten gelatin during mixing (most melting tanks have a vacuum port). 同じく, mix the fill under gentle vacuum or slow stirring to remove air. A well-degassed fill (no foam or froth) and gelatin will minimize voids in finished softgels. Check that pipelines and pumps have no leaks pulling in air. Slow down the injection pump if necessary to reduce turbulence.
What causes inconsistent capsule weight/size?
Variability usually stems from the dosing pump or ribbon thickness. Ensure the fill pump (plunger) is calibrated and running at stable speed. Check the HMI settings for fill weight or plunger stroke. Also verify the gelatin ribbon thickness is uniform (use the machine’s gauge or a sensor). Uneven drum temperature or blocked outlets can cause one ribbon to be thicker. Even small misalignments in die timing can alter capsule volume. Regularly check machinery calibration and inspect tooling for wear.
Why is the gelatin ribbon breaking or wrinkling?
Ribbon issues often relate to incorrect viscosity or temperature. If the ribbons are too brittle, the gelatin may have too low plasticizer or too low moisture; increase glycerin or slow drying. If too tacky, humidity might be low or the mix too hot. Ensure the drum chilling is uniform and the fan speed is right. The surface speed of drums should match machine settings. Fluctuations in room temperature/humidity can also affect ribbon quality. Tight control of the gelatin mix recipe and environment is key.
How to avoid sticky, tacky capsules?
Insufficient drying or high humidity are usually to blame. Make sure the dryer is working and that capsules reach target moisture (<10%). In the pre-tumble dryer, use warm (not hot) low-humidity air. After tumble, ensure the trays or tunnel have the right RH and airflow. If the plant is very humid, consider dehumidifiers or slower drying schedules. Also check formulation – too much glycerin makes shells sticky; 必要に応じて, adjust ratio or add minimal anti-tack (例えば. a light silicon coating in the polisher).
Why do capsules sometimes stick on rollers or conveyor?
This often means lubrication or flow issues. Ensure the oil or silica-lubricant roller is dispensing properly on the ribbons. Clean any buildup on the spreader bars or rollers. また, static electricity can cause sticking; grounding straps and anti-static devices (or slightly higher humidity) can help. Regular cleaning of the capsule path prevents carryover that can hold capsules.
My output seems lower than expected – how to improve throughput?
Check that all pumps are running at set RPM and that the machine isn’t running in a “break-in” or testing mode (sometimes PLC has modes). 必要に応じて, increase the RPM gradually (if the fill and gel allow). Ensure no downtime in the filler feeds (例えば. keep gelatin and fill tanks topped up). For large machines, make sure multi-plunger pumps are synchronized. Good preventive maintenance (例えば. clean sieves, no clogs) maximizes actual uptime. ついに, confirm the capsule shape and size – using a smaller die or higher RPM can raise caps/hr at the expense of size.
What quality checks are critical during softgel runs?
Besides post-run inspection, key in-process checks include ribbon thickness and clarity (use built-in gauges), 充填重量 (periodic weight checks), and seal integrity (random burst tests). Many manufacturers use online vision systems to catch defects (colored streaks, fill leaks, 粒子). Keeping detailed production logs and calibrating sensors/pumps daily helps maintain consistency.
