Special requirements as to the strength and dimensioning of tanks can require a laminate of various materials such as thermoplastic and composites. A very high bond strength is required to ensure that tanks with this dual laminate construction have high operational security. Measurements to assess whether materials are suitable for this are the interlaminary shear strength and the tear resistance. Both tests are described in the DIN EN 13121-3.
More information on suitability of materials for dual laminate constructions