Casting and dipping plastisols
Systems for precise layer quality
Shaping Solutions for Industrial Applications
In industrial manufacturing, the consistency of the material determines dimensional accuracy, cycle time and the quality of the end product. ATF Ammendorfer Plastisole develops plastisols that adapt precisely to the respective process conditions and enable stable processing in series applications.
Each formulation is developed, tested and documented in our own laboratory in order to precisely match the chemical composition, flow behavior and curing to the processes used. The compounds are formulated in such a way that they guarantee clean demolding, uniform wall thicknesses and constant elasticity even with complex geometries. In the rotational and casting process, this results in components with high surface quality, reproducible properties and permanently stable performance.
Dipping Plastisols for Protection and Function
The industrial dip coating process creates uniform coating layers that permanently protect metal, plastic and composite components from corrosion, chemical influences and mechanical stress. ATF Ammendorfer Plastisole formulates plastisols with defined flow behavior and controlled curing in order to achieve homogeneous, resilient and adhesive surfaces.
Depending on the requirement, functional properties can be specifically integrated, from electrical insulation to non-slip surfaces and decorative structures. The systems are designed for efficient line integration and, thanks to stable process parameters, guarantee consistent layer quality over many production batches.
Durability through Technical Precision
Lasting quality is created when material, process and testing interlock precisely. Each formulation at ATF Ammendorfer Plastisole is tested and documented under practical conditions in order to make behavior and stability in industrial use comprehensible. Temperature, layer thickness and flow behavior are systematically recorded and evaluated. This results in materials that deliver reproducible results and remain constant under changing loads. This technical precision forms the basis for process reliability, economic efficiency and long-term confidence in our products.
Frequently asked questions about casting plastisols and dipping plastisols
How Does Viscosity Affect Layer Thickness?
Viscosity is one of the central parameters in the dipping process and has a significant influence on the resulting layer thickness. A higher viscosity leads to a thicker coating, as less material flows off the workpiece. A lower viscosity, on the other hand, results in thinner and more uniform layers, which are particularly suitable for fine components. In order to achieve reproducible results, we precisely match the flow parameters to the dipping speed, drip-off time, bath temperature and component geometry. This minimizes fluctuations and ensures process stability, even with complex shapes or different workpiece sizes.
What Pre-Treatment of the Workpieces is Necessary?
The adhesion of the coating stands and falls with the surface preparation. A clean, grease-free and dry surface is a basic requirement for uniform adhesion of the plastisol. We recommend the use of standardized degreasing, rinsing and preheating processes to remove residues of oils, release agents or dust. Preheating the workpieces also enables controlled adhesion and uniform layer formation. Depending on the substrate, such as aluminum, steel or brass, additional primers or adhesion promoters can be useful to further increase the long-term stability of the coating.
Can the Plastisols also be Used for Rotational Molding?
Yes! Our plastisols can be specifically developed for rotational and centrifugal casting processes (rotomoulding). It is crucial that the gelling and flow properties are precisely controlled so that a homogeneous, uniformly dense layer is formed. The optimized viscosity curve and the coordinated thermal reactivity of the compounds allow the gelation to be controlled in such a way that no air bubbles, detachments or inhomogeneities occur. This makes our compounds particularly suitable for hollow body-like components, handles or flexible molded parts where uniform wall thicknesses are required.
How Can Reject Rates be Reduced in the Dipping Process?
The quality and repeatability in the dipping process depend on several factors. Precise process control is crucial to minimize rejects. These include:
- constant bath temperatures to ensure consistent flow and gelling conditions,
- defined dwell times of the workpiece in the bath,
- as well as formulation-adapted compounds that are tailored to the specific temperature profile and cycle of the process.
The combination of stable material properties and process-specific parameterization significantly reduces fluctuations in layer structure and surface defects such as bubbles or inclusions.
Can Color Adjustments be Made?
Yes! Our plastisols can be pigmented according to customer specifications – from standard colors to special shades according to RAL, Pantone or company-specific color definitions. The pigmentation is carried out batch by batch under laboratory conditions and is tested for opacity, gloss level, UV resistance and thermal stability. This ensures that the color remains stable even when exposed to heat, light or chemicals. On request, optical effects such as metallic or soft-touch surfaces can also be integrated in order to meet both functional and aesthetic requirements.