What kind of material is not acceptable in a cremation container?

In the context of cremation practices, certain materials used in cremation containers need to adhere to specific guidelines for safety and efficiency during the cremation process. Metal materials are generally not acceptable in cremation containers because they do not combust easily and can create hazardous conditions in the cremation chamber. Their presence can lead to an incomplete cremation process, as metals can melt and may cause damage to the cremation equipment. Additionally, the residue left after cremation may pose challenges in terms of disposal and environmental regulations.

On the other hand, materials like wood, cardboard, and natural fiber are suitable for cremation containers as they are combustible and break down during the cremation process, allowing for a complete transformation of the remains. These materials are designed to align with the crematory's operational requirements, ensuring that the process is both efficient and environmentally responsible.