Explore our premium grade processing and filling solutions tailored for cosmetic, pharmaceutical, and chemical plants.
Establishing Standards of Excellence in Mixing, Emulsifying, and Precision Liquid/Paste Filling Systems Since 1992.
SINAEKATO, established in 1992, has evolved into a global leader in high-performance cosmetic, pharmaceutical, and food-grade packaging machinery. With over three decades of mechanical innovation, our capabilities encompass the engineering of complex vacuum emulsifying systems, liquid homogenizers, advanced perfume chilling lines, industrial toothpaste mixers, and high-precision manual or fully automated filling equipment. Our custom turnkey configurations are optimized for global clients demanding conformity to rigid international standards.
Operating a state-of-the-art facility staffed by over 150 dedicated engineers and manufacturing specialists in China, supported by our international service hubs, SINAEKATO supplies and maintains equipment across 55 countries. Our strategic R&D alignment with global component suppliers ensures that 80% of our equipment's core components are sourced from globally recognized brands. This integration allows us to achieve exceptional performance and deliver robust structural guarantees to cosmetic contract packagers, pharma producers, and chemical factories worldwide.
Pioneering Technological Innovation, Global Partnerships, and Social Responsibility
Science and Technology serve as primary drivers for industrial efficiency. By continuously refining the research and development of our core mechanical assets, we deliver advanced cosmetic structures designed for long-term consistency. Our strict ISO9001 and CE inspection procedures guarantee that each manual filling machine complies with low-tolerance volumetric accuracy requirements.
We build our machines with robust components from international partners. Over 80% of the active pneumatic elements, PLC systems, and electrical nodes are manufactured by world-class leaders (such as Festo, SMC, Schneider, and Omron). This mitigates downstream operational downtime and guarantees ready availability of local replacement parts across Europe, North America, and Southeast Asia.
Our engineering precision is validated by major multinational contracts. Over the decades, we have partnered with key multinational conglomerates, securing project contracts such as an $800,000 supply system for Unilever's South African operation and a $1,500,000 custom cosmetic line for premium SK-II and Shiseido OEM partners. We stand as a testament to the reliability and caliber of modern high-end Chinese manufacturing.
"Stable, Reliable, Precise, Intelligent is the baseline for every machine that leaves our factory."
An In-Depth Breakdown of Volumetric Dispensing Mechanics for Viscous Fluids
Manual paste liquid filling machines are fundamental assets for pilot plants, cosmetic startups, and specialized pharmaceutical lines. Despite their manual physical footprint, the mechanical principles of these systems rely on highly precise volumetric piston stroke displacement. The viscosity range of substances like mascara, petroleum jelly, facial creams, and topical ointments requires specialized mechanical pathways to prevent fluid shear, cavitation, and air entrainment.
Designed with a custom mechanical rotary valve that controls path-directed flow. Unlike simple spring-loaded check valves, our rotary valve design prevents high-viscosity paste from sticking, clogging, or backing up into the hopper, ensuring a clean positive cut-off for thick media.
Every structural point in contact with the product is forged from high-grade SUS316L stainless steel. The interior hopper wall is polished to an electropolished roughness (Ra < 0.4μm) to prevent bacterial nesting, ease cleaning routines, and resist acidic or alkaline paste formulations.
Stroke length adjustment is controlled via a mechanical micrometer screw, delivering repeatable volumetric filling accuracy within ±1%. High-durability Viton or PTFE piston rings ensure leak-free handling of highly volatile, alcohol-rich, or oily materials.
As smart manufacturing becomes the benchmark, SINAEKATO is bridging the gap between manual execution and modular automation. Our technical roadmap integrates multi-nozzle pneumatic upgrades and foot-switch actuators to convert manual operations into semi-automated steps. Future designs feature integrated jacketed hoppers with electric heating and digital temperature sensors, catering to color cosmetics like mascara and lip gloss which require steady thermal control to maintain ideal viscosity during the filling cycle.
How the Manual Paste Filling Machine Operates Across Different Manufacturing Segments
In local compounding pharmacies, diagnostic laboratories, and pharmaceutical pilot operations, manual paste fillers are essential for packaging medicated ointments, gels, and creams. The mechanical piston operates without thermal degradation, preserving sensitive chemical active ingredients. The compliance with CE and cGMP standards ensures that materials are free from cross-contamination and satisfy rigid medical auditing mandates.
For high-end skincare brands producing small-batch face creams, mud masks, or hair treatment gels, this filling machine prevents emulsion separation. The gentle volumetric stroke maintains the rheological stability of lipid-water complexes, preventing fluid shearing while filling tubes, jars, or squeeze packs with zero waste and high speed.
Mascara requires highly specialized nozzles because of its dense structure, high pigmentation, and rapid drying characteristics. Our manual filler accommodates narrow mascara containers via custom nozzle extension tubes, using anti-drip blowback valves to stop trailing strings. Optional heated hopper configurations keep the mascara formulation fluid throughout the production run.
Leveraging Industrial Ecosystems in Guangzhou and Jiangsu to Guarantee Quality and Dispatch Speed
Our production advantage is rooted in China's industrial manufacturing ecosystem. With major engineering facilities located in Guangzhou and Gaoyou (Jiangsu), SINAEKATO operates within the world’s most robust industrial machinery supply chain. This physical clustering allows us to secure raw materials, process complex metal castings, and source key pneumatic components with high efficiency and lower lead times than Western alternatives.
Welcome Cooperation - We Step by Step, Go to the Future!
Ensuring Equipment Safety and Legal Compliance for European and Global Importation
Entering international commercial markets demands absolute compliance with local safety directives. The CE Certification on our Manual Paste Liquid Filling Machines indicates compliance with crucial European standards, including the Machinery Directive 2006/42/EC and the Low Voltage Directive 2014/35/EU. For operators in regions with stringent workplace safety laws, this certification provides the peace of mind that the equipment is built to minimize operating risks.
By using pneumatic pressure for stroke execution rather than electrical motors, our manual machines present zero risk of electrical sparking, making them suitable for environments containing alcohol-rich cosmetics or solvents.
Designed to be disassembled without tools. The piston assembly, hopper, and nozzle system use tri-clamp connection points, supporting rapid cleaning and sanitization in compliance with food and drug safety codes.
Every unit undergoes strict Factory Acceptance Testing (FAT) before shipment. Clients receive detailed documentation including material trace logs, technical drawings, and calibration logs to simplify GMP validations.
A Chronological Legacy of Industrial Growth, Mergers, and Technological Milestones
Engaged in the chemical machinery industry, establishing the technical foundations for mixing and filling systems.
Guangzhou Sina Cosmetics Engineering Equipment Co., Ltd. was established to serve the domestic cosmetics market.
Established Hong Kong Hantao International Investment Co., Ltd., driving global outreach and international trade expansion.
Gaoyou Sina Chemical Machinery Equipment Factory was established; Guangzhou Sina Cosmetics Engineering changed name to Guangzhou Sina Chemical Machinery Co., Ltd.
Established Gaoyou Sina Light Industry Machinery Equipment Factory to scale custom parts fabrication.
Purchased 10,000 sqm of industrial land in Gaoyou. The new manufacturing plant, SINA EKATO CHEMICAL MACHINERY CO., LTD (GAOYOU CITY), was commissioned.
Established Yangzhou Hantao Chemical Machinery Co., Ltd. to support regional industrial design projects.
Acquired Guangzhou Jingcheng Machinery; launched a large demonstration center to kickstart dedicated global export routes.
Original Guangzhou entity renamed to Guangzhou SINAEKATO Chemical Machinery Co., Ltd., uniting brand identity.
Acquisition of Guangzhou Suogao Machinery Equipment Co., Ltd., expanding technological capabilities.
Established SINA EKATO CHEMICAL MACHINERY CO., LTD (GAOYOU CITY) as the main production, sales, and service headquarters.
Established SINA EKATO Equipment (Jiangsu) Co., Ltd. to manage specialized international joint ventures.
Partnered with Germany's FLEMAC to establish Germany SINAEKATO Group Co., Ltd., driving high-end European design integration.
Secured an $800,000 cosmetic machinery project with Unilever South Africa, and a $1,500,000 machinery program with premium Japanese OEM partners.
Collaborated with major Japanese detergent and liquid-wash producers on custom production lines valued at over $1,000,000.
Answering Critical Operational and Technical Questions on Paste & Liquid Filling Systems
Calibration is managed by adjusting the stroke-limiting block on the primary piston cylinder. Operators cycle the mechanism manually and measure output weights with high-precision digital scales. Adjusting the micro-fine adjustment handwheel lets you fine-tune the volumetric volume to within a ±1% error range.
CE certification confirms that the machinery complies with European health, safety, and environmental protection standards. It ensures safe pneumatic operations, food-contact safe metallurgy (such as SUS316L), and structural safety shields. This speeds up importation procedures, secures site insurance compliance, and protects machine operators.
Yes, provided proper sanitary and cross-contamination guidelines are followed. Our high-precision manual filling machines use tri-clamp connection collars and sanitary-grade mechanical parts, supporting rapid disassembly, deep chemical washdowns, and autoclaving procedures between different product batches.
High-density cosmetics like mascara, lip wax, and dense ointments are highly temperature-sensitive. Without temperature regulation, viscosity spikes can cause nozzle blockages and dosing inconsistencies. Using an optional double-jacketed hot water hopper allows operators to maintain constant product temperatures, ensuring clean, continuous filling.
Since the unit features quick-release connections, cleanup is straightforward. Operators empty residual paste, run warm solvent or warm soapy water through the piston cylinder several times, and then remove the rotary valve and piston seal to inspect, wipe, and sanitize. Daily cleaning takes less than 15 minutes, preventing product carryover.
Because the displacement mechanism relies on absolute mechanical volume (the physical space occupied by the piston stroke) rather than time or weight parameters, changes in product density do not affect the fill volume. This makes volumetric displacement the ideal method for aerated pastes, whipped cosmetic creams, and dense salves.
Integrate robust processing, storage, and finishing equipment into your industrial manufacturing line.
Sina Ekato
