m of the order of magnitude of u03b1 between 5 and 35 degrees preferably between 28 and 32 degrees is preferred the crimp 25 and the part 15 of the partition 13 include between them the angle u03b1 indicated in fig9 of the indicated magnitude it was found that the partition 13 which is twisted through the indicated degrees of angle imparts to the packaged substance to be removed a slight twist movement or partial rotation which advantageously contributes to rendering the discharge of substance uniform when fluctuating pressure loadings are involved the effectiveness of the above described partially twisted configuration of the partition 13 in terms of rendering the discharge of packaged substance uniform can be further enhanced if the partition 13 of a tube 10 is made from a material which is stiffer than the material of the body portion 11 comparative investigations were undertaken to determine the degrees of stiffness of the materials being compared in the situation according to the invention in regard to the plastic materials used film or sheet strips of identical dimensions length width thickness were put on to two spaced apart supports and centrally subjected to an equal loading between the supports the loading caused flexing of the film or sheet strip and in comparison with the load free condition it formed a bend line with a maximum degree of flex or deflection relative to the horizontal which was between the.