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English 
The soft capsule machine roll mold operates as a matched pair of counter-rotating cylindrical components that form and seal gelatin ribbons during softgel production. Each set contains two precision-machined dies that compress gelatin sheets around fill material injection points, creating individually sealed capsules with consistent seam integrity. This component directly determines capsule shape, dimensional accuracy, and finished product yield. The double-step cavity design reduces gelatin flash by 3-5% compared to single-angle molds, based on production line data from 120+ commercial installations since 2010.
These soft capsule machine roll mold sets are manufactured to match standard mounting dimensions for most medium and large-scale encapsulation machines, including RJWJ-100, RJWJ-200, RG2-250, and RG2-300 series. Custom mounting dimensions can be produced for specialized equipment upon provision of technical drawings from the purchaser.
Each soft capsule machine roll mold is machined from 7A04-T6 aviation grade aluminum alloy, with a measured hardness of 150 HB. This material specification provides tensile strength of 503 MPa and yield strength of 434 MPa, suitable for continuous production operation at rotational speeds of 0-7 rpm under standard encapsulation conditions. Copper alloy material is available as an option for production environments requiring extended wear resistance for abrasive fill formulations.
Cavity positions are machined on 5-axis CNC machining centers with a measured position tolerance of ±0.01 mm across the entire roll surface. Horn hole entrances are polished to a consistent 15-degree angle to ensure uniform fill material flow and consistent capsule fill weight, with fill weight variation maintained within ±2% for standard capsule sizes. Each mold set is matched as a pair during production to ensure gear alignment and consistent seam crimping.
All mold surfaces receive hard anodized treatment with a coating thickness of 25-30 μm, providing a surface hardness of 450-500 HV. This treatment reduces gelatin adhesion during operation and extends service life between reconditioning cycles.
Parameter | Specification |
Standard roll diameters | Ø64 mm, Ø72 mm, Ø103 mm |
Standard roll lengths | 110 mm, 152 mm, 172 mm, 250 mm |
Material | 7A04-T6 aviation aluminum alloy (standard), copper alloy (optional) |
Cavity position tolerance | ±0.01 mm |
Cavity surface roughness | Ra ≤ 0.8 μm |
Surface treatment | Hard anodized coating, 25-30 μm thickness |
Rotational speed range | 0-7 rpm |
Standard capsule shapes | Oval, oblong, round, fish shape, custom geometries |
Capsule size range | 5 minims - 110 minims (0.3 mL - 6.5 mL) |
Certifications | ISO 9001:2015, CE |
Soft capsule machine roll molds for pharmaceutical applications are manufactured with additional documentation including material test reports and dimensional inspection certificates, suitable for use in production lines operating under GMP conditions. Common applications include prescription medication softgels, over-the-counter drug products, and veterinary medications.
Standard soft capsule machine roll mold configurations are used for fish oil, vitamin, herbal extract, and other nutritional supplement softgel production. Cavity designs are optimized for oil-based fill materials with consistent viscosity ranges of 500-5000 cP at operating temperature.
Specialized cavity geometries are available for paintball production and cosmetic capsule applications, including round 0.68 caliber paintball molds and cosmetic serum capsule shapes. These configurations include modified edge crimp geometry to withstand impact forces during paintball discharge.
Each soft capsule machine roll mold set includes matched alignment marks for installation. Standard replacement time between production runs is 15-20 minutes for trained maintenance personnel, with no special tools required beyond standard wrenches and alignment gauges. Gear lash should be adjusted to 0.1-0.15 mm during installation to prevent premature wear.
Molds should be cleaned with warm purified water (40-50°C) and neutral pH detergent after each production batch, followed by air drying with oil-free compressed air. Lubrication of mounting bearings is recommended every 500 operating hours. Under standard operating conditions, molds produce 30-40 million capsules before requiring re-polishing of cavity surfaces.
Standard stock shapes include oval, oblong, and round in 24 common sizes from 0.3 mL to 6.5 mL. Custom shapes and sizes can be produced based on purchaser-provided drawings or sample capsules, with a typical lead time of 15-20 working days for custom orders.
Under standard operating conditions with proper maintenance, each soft capsule machine roll mold set produces 30-40 million capsules before cavity surfaces require reconditioning. Total service life with proper reconditioning exceeds 200 million capsules.
Custom designs are available for special applications including enteric-coated softgels, chewable softgels, and dual-chamber capsules. Purchasers are required to provide detailed dimensional drawings and production parameters for quotation.
Each soft capsule machine roll mold set includes a dimensional inspection report, material certificate for the aluminum alloy, and ISO 9001:2015 conformity documentation. CE certification documentation is available for shipments to European Union markets. Material test reports can be provided for pharmaceutical validation requirements.
