A Good Tape Casting Machine Is Essential for Solid Electrolyte Membrane Preparation

In recent years, casting technology has become an important process in the manufacturing of solid-state batteries due to its characteristics of high precision, high uniformity, and scalability. In solid-state batteries, casting machines are mainly used to produce thin and uniform electrode and solid electrolyte layers. Solid-state batteries require electrodes and electrolyte layers to have excellent interfacial contact and ionic conductivity. The casting process involves mixing active materials (such as lithium metal oxides, sulfide solid electrolytes, etc.), binders, conductive agents, and solvents into a slurry, which is then uniformly coated onto a substrate using a blade. After drying, it forms a film with controllable thickness. This film has high density and low porosity, which helps to enhance the energy density and mechanical strength of the battery.

Tape casting solid-state electrolyte film

With the continuous upgrading of casting equipment, there has been a significant improvement in process precision and production efficiency. Currently, among domestic casting machine equipment manufacturers, Zhoushan Jinqiu Machinery Co., Ltd. is one of the few capable of producing cast solid-state battery films.

Zhoushan Jinqiu Machinery Co., Ltd. (referred to as Jinqiu Machinery) was established in May 2001 and has more than 20 years of experience in manufacturing cast film machinery. The company currently has over 70 employees, covers an area of more than 40,000 square meters, and has more than 10 professional technical R&D personnel. Jinqiu Machinery holds over 30 invention and utility model patents, and has been awarded honors such as "National High-tech Enterprise," "Zhejiang Province Small and Medium-sized Technology-based Enterprise," "Zhejiang Province Patent Demonstration Enterprise," and "Zhoushan City Patent Demonstration Enterprise." The company has also passed ISO9001 quality system certification.

The company’s main products include casting machines (coating machines), 49/S electronic crystal housings, petroleum pump plungers, and metal surface treatment. The casting machine developed and designed by the company incorporates advanced foreign technology, featuring leading domestic standards in performance, specifications, technology, appearance, environmental protection, and energy saving. It boasts high quality and excellent cost performance. The company has always adhered to high standards, advanced technology, and a spirit of high-threshold research and innovation in the R&D and manufacturing of casting machines. With a rigorous and dedicated attitude, the company optimizes product performance; with a customer-first approach, it addresses pain points; with a pioneering and innovative spirit, it overcomes technical challenges; and with a pursuit of excellence, it improves process precision. The casting machines developed and manufactured by the company are fully capable of casting solid-state battery films, flow battery membranes, hydrogen fuel cell membranes, alumina, aluminum nitride, zirconia, ferrite, bulletproof vest films, wave-absorbing materials, rubber films, graphene, organic polymer membranes, metal powder filter membranes, packaging ceramics, and various filtration membranes. These products are sold to enterprises nationwide and have earned widespread customer recognition.

Precision ultra-thin casting machine

Product Display – Precision Ultra-Thin Casting Machine

The Jin Qiu Machinery ZSJQ-650 casting machine's PET film belt (single-sided silicone treated) has a width of 640mm and a thickness of 100-188μm; the roller surface length is 650mm. The casting slurry can be customized to suit the casting solution, with a viscosity range of 50-40000 CPS and solid content of 60-70%. The casting thickness ranges from 3-1200μm, and the mechanical speed is 0.02-5 M/min. The casting width is 600mm (can be customized according to customer requirements). Compressed air is 0.6 Mpa, and the driving direction is on the left side relative to the film belt's forward direction. The explosion-proof method is a safety-enhanced type, including an air purification explosion-proof zone and multi-point protection. The main shaft precision is within 2μm.

The slurry supply system uses PID and photoelectric sensor control for fully automatic slurry supply with an accuracy of ±0.05mm; the circular shaft comma scraper has an accuracy of 1μm; laser displacement photoelectric sensors control the dosage and height of the liquid level.

The doctor blade lifting accuracy for slot-die coating is within 1μm. The drying zones can be customized according to customer requirements, with each zone equipped with a heated baseplate and a hot air circulation system. The baseplate temperature is controlled between room temperature and 120°C (±1°C). Special temperature requirements can be negotiated separately.

The control panel features a fully automatic computer touch screen system with PLC control, equipped with an HMT human-machine interface that allows programming and control of the screen. Tension control is managed by a servo motor to ensure stable, ripple-free operation of the web during edge guiding. The cast film thickness accuracy is within ±1.5%.

Applicable scopes include solid electrolyte membrane tape casting, ceramic film tape casting, polymer film tape casting, pharmaceutical coating tape casting, food coating tape casting, composite materials, organic membrane and synthetic membrane tape casting, magnetic material film tape casting, and fuel cell proton membrane.

Large-scale production casting machine

Product Display - Large-Scale Production Casting Machine

The ZSJQ-1400 type large-scale production casting machine from Jinqiu Machinery can have its specifications customized according to customer requirements. PET film tape (single-sided silicon treated) with a width of 1500mm and thickness of 100-188μm; roller surface length of 1500mm; customers can customize the casting slurry with a suitable solution, viscosity range of 50-50000 CPS; casting thickness of 3-2000μm; mechanical speed of 0.02-5M/min; casting width of 1400mm (customizable according to customer requirements); compressed air at 0.6 Mpa; driving direction is on the left side relative to the film tape's advancement direction; explosion-proof method is safety-enhanced type, including air purification explosion-proof zone and multi-point protection; main shaft accuracy within 2μm.

The slurry supply system adopts PID and photoelectric sensor control for fully automatic slurry supply with an accuracy of ±0.05mm; round-shaft comma scraper with a precision of 2μm; laser displacement photoelectric sensors control the liquid level dosage and height.

The casting doctor blade lifting accuracy is within 1μm. The drying zones can be customized according to customer requirements, with each zone equipped with a bottom plate heating and hot air supply system. The bottom plate temperature can be controlled from room temperature to 200°C (±1°C). Special temperature requirements can be negotiated separately.

The control panel features a fully automatic computer touch screen system, PLC control, equipped with an HMT human-machine interface that allows programming and screen control. Tension control is managed by a servo motor to maintain stable and fluctuation-free tension during base film alignment. The cast film thickness accuracy is within ±1.5%.

The scope of application includes solid electrolyte membrane casting, ceramic film casting, polymer film casting, pharmaceutical coating casting, food coating casting, absorbent materials, organic membrane synthetic film casting, magnetic material film casting, fuel cell electronic membranes, and high-temperature membranes (200℃) for energy storage batteries, etc.