Process for the production of an oriented polymer, comprising the steps of: A) provision of a partially crosslinked polymer, where the partially crosslinked polymer is obtained via partial crosslinking of a starting polymer material, the starting polymer material takes the form of a polymer or of a blend of two or more polymers, the selection of the starting polymer material is such that it is capable of forming crystalline domains which have been produced via epitactic crystallization on other crystalline domains of the starting polymer material and are within an angular range of from ≥ 50° to ≤ 130° with respect to the said other crystalline domains, and the network-chain molecular weight M C of the partially crosslinked polymer, based on the number-average molecular weight of the starting polymer material M N, is from ≥ 0.25 M N to ≤ 0.5 M N; B) heating of the partially crosslinked polymer to a temperature which, based on the melting point T m of the partially crosslinked polymer, is from ≥ T m - 20°C to ≤ T m + 30°C; C) monoaxial stretching, at a temperature of from ≥ T m - 40°C to ≤ T m + 30°C, of the heated polymer present after step B); D) heat-conditioning of the stretched polymer obtained after step C), where the polymer is held under tension in stretching direction and the heat-conditioning takes place at a temperature of from ≥ T m - 60°C to < T m for a predetermined period of ≥ 1 second. A) provision of a partially crosslinked polymer, where the partially crosslinked polymer is obtained via partial crosslinking of a starting polymer material, the starting polymer material takes the form of a polymer or of a blend of two or more polymers, the selection of the starting polymer material is such that it is capable of forming crystalline domains which have been produced via epitactic crystallization on other crystalline domains of the starting polymer material and are within an angular range of from ≥ 50° to ≤ 130° with respect to the said other crystalline domains, and the network-chain molecular weight M C of the partially crosslinked polymer, based on the number-average molecular weight of the starting polymer material M N, is from ≥ 0.25 M N to ≤ 0.5 M N; where the partially crosslinked polymer is obtained via partial crosslinking of a starting polymer material, the starting polymer material takes the form of a polymer or of a blend of two or more polymers, the selection of the starting polymer material is such that it is capable of forming crystalline domains which have been produced via epitactic crystallization on other crystalline domains of the starting polymer material and are within an angular range of from ≥ 50° to ≤ 130° with respect to the said other crystalline domains, the starting polymer material takes the form of a polymer or of a blend of two or more polymers, the selection of the starting polymer material is such that it is capable of forming crystalline domains which have been produced via epitactic crystallization on other crystalline domains of the starting polymer material and are within an angular range of from ≥ 50° to ≤ 130° with respect to the said other crystalline domains, and the network-chain molecular weight M C of the partially crosslinked polymer, based on the number-average molecular weight of the starting polymer material M N, is from ≥ 0.25 M N to ≤ 0.5 M N; B) heating of the partially crosslinked polymer to a temperature which, based on the melting point T m of the partially crosslinked polymer, is from ≥ T m - 20°C to ≤ T m + 30°C; C) monoaxial stretching, at a temperature of from ≥ T m - 40°C to ≤ T m + 30°C, of the heated polymer present after step B); D) heat-conditioning of the stretched polymer obtained after step C), where the polymer is held under tension in stretching direction and the heat-conditioning takes place at a temperature of from ≥ T m - 60°C to < T m for a predetermined period of ≥ 1 second.