PREFORM, STERILIZATION DEVICE, AND STERILIZATION METHOD

• Main Authors: UEDA, Atsushi, SUGIYAMA, Shigehiro
• Format: Patent
• Language: English; French; German
• Published: 30.08.2023
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; HUMAN NECESSITIES; HYGIENE; MAKING GRANULES OR PREFORMS; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES; MEDICAL OR VETERINARY SCIENCE; METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Provided is a preform (100) comprising: a plug section (10) that is formed in a cylindrical shape along an axis (X) and has one end open; a trunk section (20) that is connected to the plug section (10); and a base section (30) that is connected to the trunk section (20) and has one end along the axis (X) closed. The trunk section (20) includes: a linear section (21) that is connected to the plug section (10) and has an internal diameter (D1) which is constant at any position along the axis (X); and an inclined section (22) one end of which is connected to the linear section (21) and another end of which is connected to the base section (30), the internal diameter (D2) of the inclined section becoming gradually less at a constant gradient along the axis (X) from the linear section (21) toward the base section (30). The inclined section (22) is formed so that the angle of inclination (θ) of an inner peripheral surface (22a) thereof from the axis (X) is 12°-22°.