摘要:
A pressurized container usable for a pressurizable contain, such as an aerosol dispenser, an aerosol dispenser made therewith and preform therefor. The preform/container/dispenser has a neck at the top. The neck has upper and lower portions. The lower portion transitions into a shoulder, which flares outwardly. The shoulder, in turn, transitions into a sidewall. The lower neck portion/shoulder and/or upper part of the sidewall are cystallized. The invention also comprises a preform for making such a pressurizable container and an aerosol dispenser made therewith.
摘要:
A syringe for use in a pressurized injection of a fluid includes a syringe barrel including a polymeric material having undergone expansion via blow molding. An inner diameter of the syringe barrel can, for example, be sufficiently constant (over at least a portion of the axial length of the syringe) that a plunger slidably positioned within the syringe barrel and in generally sealing contact with an inner wall of the syringe barrel can be used within the syringe barrel to generate a pressure of at least 1 psi within the syringe barrel. In several embodiment, the inner diameter of the syringe barrel is sufficiently constant to generate a pressure of at least 100 psi, at least 300 psi, or even at least 500 psi within the syringe barrel. A method of forming a syringe includes the steps of: injection molding at least one polymeric material to form a preform; placing the preform into an blow mold die; and expanding at least a portion of the preform while heating the preform within the die to form a barrel of the syringe. The syringes can be formed to withstand relatively high pressures as described above. The at least one polymeric material can, for example, be polyethyleneterephthalate, cyclic olefin polymer, polypropylene, polystyrene, polyvinylidene chloride, polyethylene napthalate and/or nylon.
摘要:
A blow-molded plastic container includes an upper portion having a finish, a body portion and a base. At least one groove is formed in a radial sidewall of the finish. The groove slopes gradually downward along the radial sidewall and away from an opening into the container. The container may also include a kick out feature engagable with a tamper-evidence band. A closure member is adapted to selectively mate with the finish on the container. At least one thread is formed on the closure member.
摘要:
A syringe for use in a pressurized injection of a fluid includes a syringe barrel including a polymeric material having undergone expansion via blow molding. An inner diameter of the syringe barrel can, for example, be sufficiently constant (over at least a portion of the axial length of the syringe) that a plunger slidably positioned within the syringe barrel and in generally sealing contact with an inner wall of the syringe barrel can be used within the syringe barrel to generate a pressure of at least 1 psi within the syringe barrel. In several embodiment, the inner diameter of the syringe barrel is sufficiently constant to generate a pressure of at least 100 psi, at least 300 psi, or even at least 500 psi within the syringe barrel. A method of forming a syringe includes the steps of: injection molding at least one polymeric material to form a preform; placing the preform into an blow mold die; and expanding at least a portion of the preform while heating the preform within the die to form a barrel of the syringe. The syringes can be formed to withstand relatively high pressures as described above. The at least one polymeric material can, for example, be polyethyleneterephthalate, cyclic olefin polymer, polypropylene, polystyrene, polyvinylidene chloride, polyethylene napthalate and/or nylon.
摘要:
A preform for making a lightweighted plastic container includes a finish portion having at least one external thread defined thereon that has a first sidewall thickness, a main body portion, an end cap, and a transition portion between the end cap and the main body portion. The end cap has a second side wall thickness that preferably is not less than said first side wall thickness of the finish portion. The main body portion is preferably unstepped, and the outer surface of the transition portion is preferably concave as viewed in longitudinal cross-section. In addition, the transition portion preferably extends for a longitudinal distance, and a ratio of the longitudinal distance to an outer radius of the end cap is preferably within a range of about 0.3 to about 0.9
摘要:
A container obtained from a compression-moulded preform (1; 31; 41; 51; 61; 71; 81; 91) comprises abase wall (203; 303) intended for being rested on a supporting surface and a side wall (202; 302) surrounding a main axis (X), the thickness (C4; P4) of said base wall (203; 303) measured near said main axis (X) being less than, or equal to 8.2 times the thickness (C1; P1) of said side wall (202; 302).
摘要:
A method of making a container preform includes providing a mold core having at least one surface recess in the form of negative-mold indicia, and molding a preform around the core such that the preform has internal raised indicia formed by the at least one recess in the core. The preform preferably subsequently is blow-molded to form a container having the raised indicia on an inside surface of the container. This raised indicia on the inside surface of the container may be viewed from outside of the container to confirm that the container is genuine. In accordance with various embodiments of the disclosure, the raised internal indicia may be on the bottom wall, sidewall, shoulder and/or neck of the container.
摘要:
The invention relates to the production of containers (2) comprising a narrow opening and a long body, such as bottles or similar, from polypropylene by means of blow moulding or stretch blow moulding. According to the invention, during the blow moulding or stretch blow moulding step, the polypropylene preform (1) undergoes longitudinal stretching at a ratio (L/1) of between approximately 2 and 3.5 and radial stretching (D/d) at a ratio of between approximately 2 and 3.
摘要:
A plastic container for holding aerosol contents under pressure includes a one-piece integrally molded plastic body having a base, a sidewall and a neck finish. The sidewall and the base are of oval cross-section, and the base has a contour and cross-section for maintaining the oval cross-section under aerosol pressure within the container body. The neck finish has an open mouth surrounded by a circumferentially continuous external bead for securing a dispensing closure. The bead has an undersurface that is perpendicular to an axis of the neck finish, and the neck finish has a chamferred inside edge around the open mouth to facilitate insertion of a dispensing closure.
摘要:
Process for making preforms made of two different materials wherein the first material (4) and the second material (22) are injected with nozzles having center axis that are not coaxial. Preferably the preforms comprise an inclusion of the second material within the lateral wall of the first material. The new preforms preferably comprises a bottom region (1c) and a lateral wall region (1b), wherein the bottom region is entirely made of the first material and the lateral wall region is generally made of the first material (4) with the exception of at least one volume (14) which is filled by the second material (22).