Significado e uso
1 Esta prática acelera o envelhecimento natural da fita sensível à pressão, so that the response to ordinary physical property tests changes to the same degree as it does under exposure to natural aging for about two years, compared to pre-aging tests.

1.1 Nesse contexto, natural aging refers to the time of continuous aging of the tape in an airtight fiberboard container (in the dark) in a humid South, warm Southwest Southwest or moderately moderate U.S. climate change.

2 The degree of change in one physical property should be expected to differ from the degree of change in the other physical property and should therefore also be associated with different natural aging times.

3 Abnormal product batches can cause differences in test responses that exceed expected time patterns.

Prática padrão ASTM D3611-2019 para envelhecimento acelerado de fita sensível à pressão

4 The appearance of normal tape products usually changes only slightly after two years of natural aging. This accelerated exposure often produces exaggerated changes in appearance that can only be seen in abnormal products under natural conditions.

In applications where tapes are subjected to usage pressure, there is currently no experience linking accelerated exposure to tape response.

Etapa 1: Escopo
1.1 This practice provides an environment in which the finished pressure-sensitive tape material can be exposed to accelerate its aging. It applies to roll tape when the user follows the precautions detailed in the procedure. The practice does not provide conclusions on its own, but is used in conjunction with cosmetic or physical characteristics testing to track accelerated exposure. Although this practice was developed using package-type tape, its use for other types of tape with similar structures is encouraged. Not applicable to electronic gradient bands (see Test method D1000).

Prática padrão ASTM D3611-2019 para envelhecimento acelerado de fita sensível à pressão

1.2 Esta norma não se destina a abordar todas as questões de segurança associadas ao seu uso. É responsabilidade dos usuários desta norma estabelecer medidas de segurança apropriadas, especificações de saúde e ambientais e para determinar a aplicabilidade de restrições regulatórias antes do uso.

1.3 Esta norma internacional é baseada em princípios de padronização reconhecidos internacionalmente, estabelecidos na Decisão sobre Princípios para o Desenvolvimento de Normas Internacionais, Diretrizes e recomendações emitidas pelas Barreiras Técnicas ao Comércio da OMC (TBT) Comitê.

2. Consulte o arquivo
Padrão ASTM

D996 Termos ambientais de embalagem e distribuição

D1000 Test method for pressure sensitive adhesive tape for electrical and electronic applications

Test method for peel adhesion of D3330 / D3330M pressure sensitive tape

D371/ D371 pressure sensitive tape quality Assurance practices

D4332 Prática de regulação de contêineres, embalagem ou componentes de embalagem para teste