CHEMICAL COMPOUNDS MEXICO

How to choose PVC compounds?

Our experience in the PVC market has shown that selecting the right PVC compounds for your company can sometimes be challenging. For this reason, we recommend starting by understanding the requirements of the finished product you plan to manufacture or the needs of the end user.

PVC compounds offer a wide range of properties, and in this section we aim to explain some of the most relevant ones. It is important to identify not only the characteristics of the physical product, but also those required for proper processing.

These five simple steps will help you choose the right PVC compounds

One of our technical sales specialists will contact you to gain a general understanding of the material you produce and your specific requirements.

If you are already using a PVC compound, we can offer a matching countertype or develop one if needed. We provide a sample for testing along with on-site technical assistance.

If your company is just starting to manufacture PVC products, we will be glad to support you throughout the process.

The sample is approved, and any additional adjustments can be made if required. The quotation is approved.

A final pilot run is recommended to anticipate and communicate any adjustments to our technical team. Production begins.

PVC Aspects

It's very common for end users to take a product's final specifications for granted and never question what's behind them. Perhaps your client needs bottles to sell cosmetics, and all they ask for is a clear, flawless container with a slight blue tint. What they don't know is that the packaging must also meet certain visual standards and be free of imperfections, a situation that becomes the responsibility of your production and quality manager at your company.
To know how to choose PVC compounds, the following considerations must be kept in mind.
Some properties are merely linked to the finished product (functional) but others also affect the processing:

Process Type

There are three main PVC processing groups, each with its own variants: extrusion, injection molding, and calendering. Based on the type of process, the required compound must meet specific specifications to ensure proper processing, minimize scrap, and avoid machine downtime during extended production runs. At this stage, we recommend allowing our specialized technicians to review your equipment specifications and processing conditions.

Hardness

It is a key parameter used to determine the level of flexibility required for the product to meet its final performance properties while ensuring proper processing. Grades can range from highly flexible materials for hoses, semi-rigid compounds for injection-molded parts, to rigid formulations for PVC conduits or piping. While we offer standard products, custom adjustments can also be developed to meet specific requirements.

UV & weathering resistance

It is important to identify the warranty period that your company commits to its market. This property determines the ability of PVC to retain its mechanical properties and service life over time.

Density

A product with a specific density has a direct impact on appearance, cost, and processing performance.

Impact Resistance

This property is associated with rigid PVC and is available in both opaque and transparent grades. It is commonly used in containers and rigid profiles.

Melt flow

An important property for maintaining productivity in your process. It helps prevent surface defects and thermal degradation.

Appearance

PVC can be virgin transparent, opaque, crystal clear, black, white, or colored. It is important to clearly define your specific requirements, as a crystal-clear material intended for pigmentation during processing may result in higher costs compared to a pre-pigmented compound.

Other

Other properties to consider include flame resistance, chemical attack extraction resistance, low smoke emission, low whitening during bending, demolding performance, low blocking, good cling or adhesion, among other aspects.

How to choose PVC compounds?