Task: Translation
Input (Spanish): The first and second flaps are configured to, upon the insertion, swing from the body of the flexible insert to engage the second panel of the sealable wrapper such that a thickness of the packaging apparatus becomes substantially uniform.
Output (English): La primera y segunda aletas son configuradas, al insertarse, para oscilar a partir del cuerpo del inserto flexible a fin de acoplarse con el segundo panel de la enrrolladora o envolvedora sellable, de manera que el espesor del aparato de empacado se vuelva sustancialmente uniforme.