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Anhui Hengbo new material Co., Ltd.
Home / Products / Copperplate Paper Release Paper / Grain Release Paper
  • Grain Release Paper
  • Grain Release Paper

Grain Release Paper

The Grain Release Paper rolls are engineered to facilitate the production of synthetic leathers, particularly PVC and PU artificial leather, through a precise casting and transfer process. This product functions as a temporary carrier, transferring the desired surface texture (grain pattern) onto the polymeric material before its final cure. Our formulation ensures optimal release force consistency across the entire roll, a critical factor for maintaining product quality in continuous manufacturing lines. Manufacturers seeking reliable synthetic leather texture transfer solutions utilize this paper for achieving highly realistic and consistent surface finishes.

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  • Grain release paper has high smoothness, good transparency, good stiffness, and uniform coating combined with silicone resin; Good fastness, good impermeability, good die-cutting performance, good dimensional stability, and good temperature resistance. Suitable for trademark label backing paper, especially for high-speed label pasting, double-sided tape, substrate packaging, etc. Mainly used in industries such as trademark barcodes, stickers, adhesive films, electronic die-cutting, anti-counterfeiting, adhesive tapes, and medical applications.

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Grain Release Paper Rolls - Specialised Silicone-Coated Liner for Synthetic Leather Production

Product Features and Functional Specifications

This specialised release liner is characterised by its robust mechanical properties and meticulously controlled surface chemistry. It is designed to meet the rigorous demands of high-speed casting machine operation and subsequent material stripping.

  • Controlled Release Chemistry: Utilises a proprietary silicone coating formulation to deliver uniform and stable peel force, which is essential for preventing defects such as pitting or uneven grain transfer during the demolding stage of the PU/PVC casting process.
  • Thermal Stability: Exhibits minimal dimensional change and warping under the elevated temperatures encountered in drying ovens, ensuring pattern integrity during thermal curing of the polymer layer.
  • Structural Rigidity: Possesses sufficient tensile strength and tear resistance to withstand the handling and tension required for efficient unwinding and rewinding on industrial-scale laminating equipment.
  • Grain Definition Fidelity: The paper surface is engineered to reproduce intricate texture patterns with high resolution, supporting the manufacture of premium artificial leather with deep grain simulation. This addresses the industry need for consistent high-definition grain transfer.

Detailed Technical Specifications

These specifications detail the typical parameters for the synthetic leather casting release paper rolls, assisting process engineers in selecting the appropriate material for their specific production requirements.

Parameter Unit Typical Value/Range Testing Method
Base Paper Weight g/m² 80 - 150 ISO 536
Silicone Coating Type N/A Solventless/Solvent-based (Customizable) Internal SOP
Release Force (Medium Grade) gf/25mm 10 - 25 FINAT FTM 3 (Specific Adhesive)
Tensile Strength (MD/CD) kN/m >4.0 / >2.0 ISO 1924-2
Moisture Content % 4.0 - 7.0 TAPPI T 412 om-02
Max Operating Temperature °C Up to 200 Thermal Cycle Testing
Roll Width Availability mm 1000, 1250, 1550 (Customizable) Production Standard
Core Diameter inches 3 or 6 Industry Standard

Applications and Industry Suitability

Our silicone release paper for PU synthetic leather is primarily deployed in processes requiring temporary adhesion management and texture transfer. Key applications include:

  • Automotive Interiors: Production of textured synthetic leather for seat covers, dashboards, and door panels, where surface texture durability and consistency are mandatory.
  • Footwear and Apparel: Manufacturing materials requiring specific aesthetic finishes and haptic properties.
  • Furniture Upholstery: Creating wide-format textured materials for sofas and chairs, ensuring seamless grain pattern across large surfaces.

Frequently Asked Questions (FAQ)

How does the release force of your Grain Release Paper impact the synthetic leather manufacturing process?

The precise control of the release force is paramount. If the force is too high, it risks tearing the fragile synthetic leather layer or causing a phenomenon known as 'pinholes' upon stripping. If the force is too low, the polymer mixture may prematurely release or spread unevenly, compromising the grain transfer fidelity. Our technical team at Anhui Hengbo New Material Co., Ltd., which successfully passed safety production standardization and ISO9001 international standard certification, focuses on tailoring the silicone formulation to ensure the specific, stable peel force required for defect-free synthetic leather demolding across different polymer chemistries (PU, PVC, and TPU). We always adhere to providing more thoughtful services according to the needs of each customer.

What measures are taken to ensure the dimensional stability of the paper during high-temperature curing cycles?

Dimensional stability under heat is critical for preventing pattern distortion, which is a major concern when using release paper for PU artificial leather production. We select base papers with low hygroscopicity and high intrinsic tensile strength to minimise expansion or contraction during the thermal phase of the casting line. Anhui Hengbo New Material Co., Ltd. (established in 2017) supplies these films, which are also used in demanding applications like flexible circuits and insulating products. This expertise in materials for electronics and laminations informs our selection of substrates for the Grain Release Paper, guaranteeing the pattern registration remains accurate even at operating temperatures up to 200°C. The company always adheres to people-oriented, treating customers with integrity, and serving you on the principle of customer.

Can Anhui Hengbo New Material Co., Ltd. provide custom roll dimensions or tailored release levels for my specific casting equipment?

Yes, customisation is a core service. While we offer standard roll widths (e.g., 1000mm, 1250mm, 1550mm) commonly used in the industry for applications ranging from printing to protective films, our operational principle is to meet specific customer needs. As a manufacturer primarily engaged in PET polyester film, PET release film, and protective film, we can adjust roll width, roll diameter, and core size to integrate seamlessly with your existing synthetic leather casting machinery. Furthermore, our R&D can fine-tune the silicone chemistry to achieve custom low, medium, or tight release forces necessary for niche applications, such as adhesive products or plaster paper, where controlled release is paramount. This adherence to providing thoughtful, tailored services aligns with the company's commitment to customer satisfaction.

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About
Anhui Hengbo new material Co., Ltd.
Anhui Hengbo new material Co., Ltd.

Anhui Hengbo new material Co., Ltd. is China Grain Release Paper Company and Wholesale Grain Release Paper Exporter. Products are mainly used for printing, silk screen printing, pad printing, nameplates, membrane switches, flexible circuits, insulating products, circuit boards, laser anti-counterfeiting, lamination, electronics, films for sealing materials, reflective materials, waterproof materials, medicine (plaster paper) ), toilet paper, adhesive products, die-cutting and punching processing and other industries.
The company successfully passed the acceptance of safety production standardization and ISO9001 international standard certification. The company always adheres to providing more thoughtful services according to the needs of each customer, adheres to people-oriented, treats customers with integrity, and serves you on the principle of customer.

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  • OUR COMMITMENT

    We are a major business in PET polyester film, PET release film, protective film manufacturers.

    Our goal is to provide customized solutions for the market and our customers.

    Although the market, customers are different, we have a unique philosophy to guide our customers to success.

    We will reply patiently and carefully to any inquiries and feedback from our customers.

    For any inquiry from our customers, we will give professional and reasonable quotation as quickly as possible.

    Anhui Hengbo new material Co., Ltd.

  • For any new product from our customers, we will communicate with them professionally, listen to their opinions and give useful suggestions to ensure the product.

    For any order from our customers, we will complete it with high quality.

    We take the time and effort to solve every problem and handle it perfectly.

    Our company is always in the spirit of "high standard, high quality, zero defect" enterprise purpose, the industry development, casting a core competitive ability and core value of the textile industry, wholeheartedly welcome the global customers to visit us, seek common development, and cast brilliant.

    Anhui Hengbo new material Co., Ltd.