The dying manufacturing processes are ruled by synthetic polymers which have distinct properties. The plastic industry requires several methods and applications of colored plastics. There are several complexities that define the consequences of colorants on plastic polymer properties. In order to understand injection molded plastic parts, we need to understand the coloring practices used by manufacturers.
This information is an attempt to recognize the correct choice of color
ants which can be either solvent dyes or pigments.
Prime focus on:
How to choose plastic colorants?
Injection molded plastics parts require various colorants. The polymers are often impacted by resistance towards UV rays or may even be responsible for breakage or bending. Therefore, material options need to be considered very carefully. Suitability and characteristics are also affected by colorants. They also need to be compatible and the amount used is equally important. This is because different colors have different properties and it effects injection molded plastics in large way. Colorants can be solvent dyes or pigments. The later does not dissolve in the plastic but can be blended easily. They are ideal for transparent plastics where strong tints are required. Depending on the requirement the supplier is able to guide the client to make a choice. Colorants should be discussed ideally when the raw materials are being selected. Keeping the usage of the end product in mind there is also a need to check on durability. The manufacturer will also pay attention to environmental impact, capital costs and affordability.
As colorants effect polymer properties they should be decided early at the discussion stage. The following factors are crucial to keep in mind.
Process of inserting colors
This is done via compounding, masterbatching, dry blending or by surface coating. Each method has benefits. However, some colors impact the consistency and have variable costs. They impact the mechanical properties of the plastic.
Optimal color requirement
The polymer structure is defined by the colorant used. The amount used is vital. Anything more than 1-2% can be harmful and compatibility issues may arise. When more color is used the polymer structure itself is modified. This could harm the end product. Hence optimal color is done by experienced staff even during the trial runs in the testing labs.
Compatibility with polymer
This is an essential component from the supplier’s perspective. If there is no basic compatibility between the polymer structure and the color being used, subsequent processes are ruined. Colors possess certain compounds that break down when heat is applied. If the color cannot resist the temperature the chemical compatibility is reduced. It becomes worse if other additives like a flame retardant is added.
Different colors produce different properties
When colors are used for transplant plastics, the results are quite different. Solvent dyes have a less toxic effect on the polymer structure. There are pigments used for opaque color tones and the end performance of the material may be modified. The manufacturer will need to run trials and various tests to check how different colors behave during molding. This is critical when the tolerance levels are stringent.
If you are looking for a supplier who will discuss these projections, it will add value to your basic requirements. All these factors clarify complexities related to colorant and effects on polymers.