Product Introduction
This computerized hydrogel coating tester is designed to replicate industrial production processes, with parameters aligned to actual manufacturing requirements. It employs an inclined feeding and dual-roller squeeze coating method, achieving satisfactory coating results even with high-viscosity materials. Coating thickness is adjusted via a gap mechanism and displayed by both scale and digital readout, with a gap display accuracy of 0.001 mm. The machine is equipped with two unwinding rollers and manual spring-type tension control, while rewinding is automatic, enabling a continuous process of substrate feeding, coating, laminating, and rewinding. The material hopper is an inclined 304 stainless steel structure, the discharge plate is a flat 304 stainless steel structure, and the housing is also 304 stainless steel, fully compliant with medical standards. With overall dimensions of 1050×430×1550 mm and a 220V/50Hz, 500W power supply, the machine is compact and precise. Even small amounts of material can be used for sampling, significantly reducing material waste during the R&D stage.
Key Features
Simulates Production Process:Fully replicates large-scale production equipment with parameters aligned to actual manufacturing processes, so sampling results can directly guide scale-up.
Inclined Squeeze Coating:Adopts inclined feeding and dual-roller squeeze coating, delivering satisfactory results even for high-viscosity materials with simple operation.
Precisely Adjustable Thickness:Coating thickness adjustable from 0.5 to 3.50 mm, with gap adjustment, scale, and digital display providing 0.001 mm display accuracy.
Integrated Laminating:Simultaneously laminates the substrate with an anti-adhesive layer during coating; an optional die-cutting function cuts specimens to size.
Medical-Grade Stainless Steel Body:Housing, hopper, and discharge plate are all made of 304 stainless steel, meeting medical standards with corrosion resistance and easy cleaning.
Dual Unwinding & Automatic Rewinding:Equipped with two unwinding rollers and manual spring-type tension control, with automatic rewinding for continuous coating operations.
Continuously Adjustable Speed:Coating speed adjustable from 0.2 to 1.5 m/min, adapting to different material rheology and process requirements.
Economical Small-Batch Sampling:Compact and precise design allows sampling with small amounts of material, greatly reducing material consumption and costs in R&D.

Technical Specifications
| Item | Specification |
|---|---|
| Coating principle | Substrate unwinding → dual-roller squeeze coating |
| Effective coating width | 200 mm |
| Coating thickness | 0.5 mm – 3.50 mm adjustable |
| Thickness adjustment | Gap adjustment, scale adjustment, digital display |
| Gap display accuracy | 0.001 mm |
| Coating speed | 0.2 – 1.5 m/min adjustable |
| Unwinding rollers | Two sets |
| Tension control | Manual spring type |
| Material hopper | 304 stainless steel, inclined |
Discharge plate | 304 stainless steel, flat |
| Housing | 304 stainless steel |
| Rewinding method | Automatic |
| Overall dimensions | 1050 × 430 × 1550 mm |
| Power supply | 220V, 50Hz, 500W |
FAQ
Q: What materials is this machine mainly used for?
A: It is primarily used for coating trials of cataplasm, cataplasm paste, and hydrogel materials, and can also be used for sampling similar medical patch products.
Q: Can the coating thickness be adjusted? What is the accuracy?
A: Yes. The coating thickness is adjustable from 0.5 mm to 3.50 mm via a gap mechanism, with both scale and digital display. The gap display accuracy is 0.001 mm.
Q: Can the machine complete lamination at the same time?
A: Yes. It can laminate the substrate with an anti-adhesive layer during coating. With the optional die-cutting function, specimens can be cut to the required size.
Q: What is the coating speed? Is it adjustable?
A: The coating speed is 0.2 to 1.5 m/min and is continuously adjustable to suit different materials and processes.
Q: Can high-viscosity materials be coated evenly?
A: Yes. The inclined feeding and dual-roller squeeze coating method conforms to production processes and achieves satisfactory coating even with high-viscosity materials.
Q: Can I run a trial with a small amount of material?
A: Yes. The compact and precise design allows sampling with small amounts of material, making it ideal for R&D.
After-Sales Service
Thank you for your interest. Shandong Annimet Instruments Co., Ltd., founded in 2007, has been committed to the R&D, manufacturing and sales of quality testing instruments. Throughout our development, we have treated product quality as the lifeline of our enterprise and relentlessly pursued perfection in every instrument we build. Looking at the history of science and technology, we firmly believe that every product relies on the advancement of technology, every technological breakthrough originates from material exploration, every material discovery depends on process improvement, and every process improvement is supported by experimental means. Human creativity never falls short of ideas—what we need are tools to realize them. Annimet Instruments will continue to provide the means to bring your ideas and innovations to life. Should you have any questions, please feel free to contact our customer service team; we are fully dedicated to providing excellent pre-sale, in-sale and after-sale support.
Shandong Annimet Instruments Co., Ltd.
Address: Building 105, No.155, Xinmao Qilu Technology City, Zidong Avenue 299, Tianqiao District, Jinan City, Shandong Province, 250032, China
Tel: +86-400-9933-057 Fax: +86-531-88092218
Web: http://www.sdanmtyq.com E-mail: anmt_test@126.com
Product Encyclopedia
Hydrogel coating and cataplasm forming are core processes in the production of medical patches and transdermal drug delivery systems. Hydrogel is a polymer material with a three-dimensional network structure that can absorb large amounts of water while maintaining its shape, and is widely used in medical dressings, cooling patches, cold compress patches, and drug release carriers. Cataplasm is an external patch based on water-soluble polymers, characterized by high drug loading, good skin compatibility, and easy application and removal. The production of such products typically requires uniformly coating a high-viscosity gel matrix onto a substrate, laminating it with an anti-adhesive layer or backing layer, and finally die-cutting it into specified dimensions. Because the gel matrix has high viscosity and poor flowability, the coating process places extremely high demands on the extrusion method, thickness control, and tension stability of the equipment. By simulating the dual-roller squeeze coating and laminating process of industrial production, laboratory coating testers enable researchers to rapidly validate formulations and process parameters with small amounts of material, providing a reliable basis for subsequent scale-up production. They are indispensable testing equipment in the development of medical patches and hydrogel products.
Shandong Annimet Instruments Co., Ltd., established in 2007, is a professional manufacturer integrating R&D, production, and sales of laboratory testing instruments and sample preparation equipment. With nearly two decades of industry experience, we are committed to delivering reliable quality testing solutions to clients worldwide.
Contact: +86 400-9933-057
Company Address: Factory Building 105, No. 155, Xinmao Qilu Science and Technology City, No. 299 Zidong Avenue, Tianqiao District, Jinan City, Shandong Province
E-mail: anmt_test@126.com
Fax: +86 0531-88092218
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