Artificial Marble Demolding Film

The product is mainly used for demoulding artificial marble and as release film. In the production process of marble, the water-soluble film is placed inside the mold film to quickly demould.

A polyvinyl alcohol release film for artificial marble molding, which is a release film disposed between the original liquid and the shaping device when the original liquid which is a raw material of artificial marble is supplied to the shaping device and cured for molding, is characterized in that the release film is provided in the manufacturing of a wide range of artificial marble, and can suppress wrinkles, curls, and the like generated at both ends, and prevent the surface shape of the resulting artificial marble from being poor, The steps of grinding and grinding the artificial marble can be simplified.

Thickness: 30micron to 50microns.
Width: 1020mm, 1100mm, 1600mm, 1830mm, 1870mm, according to customer requirements.
Fracture strength: longitudinal 40MPa ~ 60MPa Transverse 20MPa to 35MPa.
Elongation at break: 150% ~ 275% lengthwise Transverse 200% ~ 300%.
Water dissolution time: ≤ 240 seconds, water temperature 25℃, standing in water, stirring can accelerate the dissolution.
Packing requirements: Roll and seal with polyethylene film separately, carton packing.
Storage conditions: dry, no direct solar radiation, no high temperature, no icing.


Exceptional Release Film for Artificial Marble Production
The artificial marble demoulding film from CiYu Material is engineered as a clean and reliable barrier in marble casting molds. With thickness ranging from 30 micron to 50 micron and widths customizable up to 1870 mm, this film supports large‑scale mold surfaces without wrinkling or curling at the edges. It demonstrates a longitudinal fracture strength of 40–60 MPa and transverse strength of 20–35 MPa, with elongation at break between 150–275 % lengthwise and 200–300 % transverse. Developed by experienced water soluble film manufacturers, the film dissolves completely in water (≤ 240 seconds at 25 °C under gentle stirring), simplifying post‑curing cleanup and mold maintenance. As a product serving clients in the biodegradable bag business, it combines stable mechanical performance with eco‑responsive material behavior during marble production workflows.

Material Composition, Structure, and Usage Details
Manufactured with PVA (polyvinyl alcohol) as its base, this demoulding film provides high transparency for visual inspection of marble surfaces during production. Its minimized additive content prevents deterioration and ensures dry films leave no oily residue. Flatness and uniform thickness allow consistent adhesion across mold surfaces, contributing to defect‑free curing results. As a specialized product offered by reputable pva film suppliers and water soluble bag manufacturers, it demonstrates reliable water solubility, solvent resistance, and release performance suited for engineered stone, bathtubs, countertops, and façade panels. Every production stage—extrusion, conditioning, and winding—is controlled under CiYu Material’s rigorous quality system to maintain stability and reproducibility across batches.

Customization, Handling, and Safety Properties
CiYu Material provides multiple width options tailored to customer requirements, including 1020 mm, 1100 mm, 1600 mm, 1830 mm, and 1870 mm. Rolls are sealed with polyethylene film and packed in cartons to prevent damage during shipping. For storage, the film should be kept dry and protected from sunlight, high temperature, and freezing conditions. When applied to molds, it reduces surface marks and simplifies finishing steps after demoulding. Supported by CiYu’s expertise as a pva packing bag manufacturer and biodegradable bag manufacturer, the film maintains predictable mechanical behavior in processing environments. This ensures that operators can achieve stable, repeatable release performance, improving both efficiency and yield in artificial marble and composite material production lines.



Product Advantages

Design for Industrial Scale Demoulding Efficiency
The film is designed to accommodate large mold formats commonly used in artificial marble production. With widths reaching up to 1870 mm and high surface flatness, it minimizes the need for overlapping or seaming, ensuring uninterrupted coverage. Its elongation capacity—150–275 % in the lengthwise direction and 200–300 % transversely—makes it suitable for complex or curved molds without risk of tearing. These structural characteristics serve industrial operations that require continuous, stable performance. As a trusted solution by fully biodegradable zipper bag supply providers and water soluble bag suppliers, the film addresses the demand for scalable demoulding materials in high-volume composite material processing environments.

Technical Performance and Material Resilience
From a formulation perspective, the film combines high mechanical strength with effective solubility. Its tensile performance in both directions ensures reliable handling and integration into equipment processes, while complete dissolution in water (≤ 240 seconds at 25 °C) allows for clean and efficient mold release. High clarity supports surface inspection during curing, while the low additive content reduces risks of film degradation or surface contamination. These specifications are consistent with the production standards upheld by leading biodegradable plastic bag manufacturers and pva packing bag manufacturers, where mechanical reliability, product purity, and controlled dissolution are essential in material applications.

Application‐oriented Value in End Use
During application, this film significantly reduces manual effort required after molding. It peels away cleanly and dissolves in water, avoiding the need for mechanical scraping or chemical removal. This process minimizes the chance of surface defects and shortens the finishing time. Particularly valuable in artificial marble, engineered stone, or solid surface production, the film enhances process speed and finish consistency while protecting the mold structure. These downstream benefits reflect the needs of users engaged in the biodegradable bag business or working with water soluble bag manufacturers, seeking operational efficiency and environmentally aligned practices in mold-based production.



About Us

CiYu Polymer Material (Changzhou) Co., Ltd. is a diversified enterprise focused on research, production, sales, and service of degradable functional film and degradable packaging bags. The manufacturing facility is located in Yizheng Economic Development Zone, Jiangsu Province; research and sales operations are based in Changzhou at the National University Science Park and the National Innovation and Entrepreneurship Base for overseas high-level talents.

The company maintains strong technical capacity and innovation capabilities. It cooperates with the State Key Laboratory of Polymer Material Engineering of Sichuan University, the Key Laboratory of Eco-Textile of the Ministry of Education at Jiangnan University, and the provincial higher vocational education training base of Changzhou Textile and Garment Vocational and Technical College.

CiYu holds over 20 related patents, operates a 4,000-square-meter production workshop, employs approximately 40 staff members—including five dedicated researchers—and runs four automatic production lines with a monthly capacity of 50 tons.

Its product applications span artificial marble release films, packaging for electrical and electronic products, green packaging for agricultural chemicals, high-grade textile packaging, daily chemical product packaging, and fiber powder packaging for cement and other building materials. As a key supplier in the biodegradable bag business and among established water soluble bag suppliers, CiYu continues to support sustainable materials innovation across industrial sectors.




FAQ

What is the water dissolution time for this demoulding film?
The film dissolves in water within 240 seconds at 25 °C under standing water conditions. Stirring the water slightly can accelerate the process. This dissolution speed is typical of products from leading water soluble film manufacturers.

What thickness and width options are available?
The product is offered in thicknesses ranging from 30 to 50 microns. Widths are customizable up to 1870 mm, with standard options including 1020 mm, 1100 mm, 1600 mm, 1830 mm, and 1870 mm to meet different mold sizes.

How strong is the film in tensile and elongation performance?
The film has a longitudinal fracture strength of 40–60 MPa and a transverse strength of 20–35 MPa. Elongation at break reaches 150–275 % in the longitudinal direction and 200–300 % transversely, supporting its use in complex mold applications.

Is this film provided by a biodegradable bag manufacturer or PVA packing bag supplier?
Yes. CiYu operates as a specialized PVA film supplier and is active in the biodegradable bag business, offering various degradable functional films and packing solutions, including water-soluble packaging for industrial use.

What industries commonly use this product, and for what applications?
The artificial marble demoulding film is widely used in industries producing engineered stone, solid surfaces, and molded marble components for bathtubs, countertops, facades, and flooring. It aligns with the performance expectations of water soluble bag manufacturers and biodegradable bag manufacturers serving the construction and interior finishing sectors.



Request a quote today to secure your supply of high‑quality biodegradable & water‑soluble demoulding film!