Microcrystalline sacculus of reticular structure and preparation process thereof

The invention discloses a microcrystalline sacculus of a reticular structure. The sacculus is prepared from non-water-soluble polymer materials by controlling the technological conditions in a two-way stretching and blow molding mode, and molecular chains of the sacculus are distributed in a mesh shape and contain a great number of microcrystalline structures. A preparation process of the microcrystalline sacculus of the reticular structure includes the following steps of 1, parison drawing, 2, parison preheating, 3, stretching and blow molding of the sacculus, 4, high-temperature high-pressure sizing and 5, microcrystallization treatment. The sacculus prepared through the process has the advantages of being high in compression strength, high in light transmittance performance, low in shrinking percentage, good in size stability and the like, a microcosmic microcosmic of the sacculus is of a reticular microcrystalline structure, and the microcrystalline sacculus can be used for treating hemadostenosis, intimal hyperplasia and other diseases.