DEN GANZEN ARTIKEL HERUNTERLADEN
For professionals working with PVC, CPVC, or ABS PVC / CPVC / ABS Klebstoffs and Primers, VOCs are a constant consideration in material selection and jobsite safety. Rather than viewing them purely as a regulatory hurdle, it helps to understand their functional role. Volatile Organic Compounds (VOCs) are carbon-based compounds that readily evaporate at room temperature. In solvent welding, these VOCs are primarily associated with the liquid solvents that make the fusion ofRohr and Fitting (Verbindung) possible.
Why VOCs Matter: Health and Environment
VOCs are managed for two primary reasons:
Immediate Exposure: Breathing concentrated vapors in confined spaces can cause respiratory irritation, headaches, or dizziness. Proper ventilation is a functional safety requirement, not a suggestion.
Environmental Impact: On a larger scale, outdoor VOC emissions can contribute to ground-level ozone formation when they react with nitrogen oxides. This is why regional air quality regulations, such as SCAQMD Rule 1168, exist.
The Role of VOCs in PVC / CPVC / ABS Klebstoff
PVC / CPVC / ABS Klebstoff is not a conventional “glue.” It does not simply sit between two surfaces. Instead, it creates a chemical fusion. This process relies on liquid solvents (such as THF, MEK, or acetone) to soften and partially dissolve the surface of the Rohr and Fitting (Verbindung). As these solvents evaporate, or “flash off,” the plastic surfaces knit together. The resulting “weld” forms as the material returns to a solid state.
When Do VOCs Enter the Air?
Understanding the timing of VOC release is the most practical way to manage jobsite safety:
Contained: In a sealed container, VOCs remain liquid and contained.
Active Release: VOC release occurs primarily during application, when cement is exposed to air on a dauber, Rohr, or Fitting (Verbindung) surface.
Set & Cure: Once the joint is assembled, the evaporation rate drops sharply. Most remaining material is retained within the joint as it sets.
Key Field Insight: The highest risk for inhalation occurs during the application window. Once the joint is fully assembled, emission rates are significantly reduced. A
common source of confusion is treating “VOC” as a single measurement. For Klar (durchsichtig) communication with inspectors, specifiers, or clients, it is important to distinguish between two different metrics:
A product can meet a “Low-VOC” content limit for compliance but still require robust ventilation because the emissions during application remain concentrated.
The Professional’s Bottom Line
In the field, VOC discussions should focus on two distinct areas: regulatory compliance and operational safety. Keeping those conversations Klar (durchsichtig) means separating their purpose:
For Compliance: Focus on VOC content. This information appears on the product label and Safety Data Sheet (SDS) and determines whether the product is permitted in a given jurisdiction.
For Safety: Focus on VOC emissions. This drives decisions around ventilation and personal protective equipment (PPE). Recognizing that peak vapor exposure occurs during application allows crews to plan airflow appropriately, especially in confined spaces.
By separating what is in the product from how vapors behave during the weld, both regulatory requirements and worker safety can be managed more effectively.
Über Weld-On
Weld-On Adhesives, Inc., eine Tochtergesellschaft der IPS Corporation, ist Pionier und führender Hersteller von Weld-On® PVC-/CPVC-/ABS-Klebstoffen, Primers und Reinigern für PVC-, CPVC-, ABS- und andere Kunststoffrohrsysteme. Weld-On-Produkte gelten weltweit als Premiumprodukte für die Verbindung von Kunststoffrohren und Fitting-Verbindungen. Mit Hauptsitz in Kalifornien verfügt Weld-On über modernste Produktionsstätten in den USA und China sowie ein weltweites Netzwerk von Vertriebsmitarbeitern und Distributoren.