Significato e scopo
5.1 Molti rivestimenti architettonici, soprattutto bianco e colori chiari, exhibit significant changes in film opacity when drying. The increase in hiding power is sometimes associated with the porosity and poor film integrity of traditional formulated coatings. Reductions can lead to disappointing paint jobs. Così, the change in covering power from wet to dry is a property of great practical importance.

5.2 This test method can be used for paint specifications and as a short procedure for evaluation and quality control.

Metodo di prova standard ASTM D5007-99-2017 per le variazioni del potere coprente da umido a secco

Ambito di applicazione
1.1 This test method involves determining the change in the hiding power of architectural coatings during drying by visually evaluating wet and dry films.

1.2 Questo metodo di test non è consigliato per colori diversi dal bianco e dai colori chiari.

1.3 Values expressed in SI units shall prevail. I valori indicati tra parentesi sono solo di riferimento.

1.4 Questo standard non è destinato ad affrontare tutti i problemi di sicurezza, se presente, legati al suo utilizzo. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory restrictions prior to use.

1.5 This international Standard has been developed in accordance with the internationally accepted standardization principles established in the Decision on Principles for the Development of International Standards, Guidelines and Recommendations issued by the Technical Barriers to Trade (TBT) Committee of the World Trade Organization.