Production of sterile packages

Claim 1

A composite packaging laminate which is internally sterile and which is intended for the sterile packing of products, preferably in liquid and/or paste form, but which is without such products therein, said composite packaging laminate comprising at least two individual strips, one of which comprises a thermoplastic material, said strips being adhered together in a sealing manner at least at their edges whereby the adjacent surfaces of the strips lie in opposed, facing relationship, said adjacent surfaces being sterile and having been sterilised by the time they are adhered together, said adjacent surfaces also being readily separable each from the other under the action of pulling forces applied to the individual strips in divergent directions at a temperature which is at most equal to the softening temperature of the thermoplastic material, the thermoplastic material being such that after the separation of the two individual strips, the said one strip can be heat sealed to part of itself or to another individual strip with the application of heat and pressure to the thermoplastic material.