A lightweight neck finish includes a retaining structure that interacts with a tamper band to cause frangible connectors between the tamper band and closure to break upon initial removal of the closure from the neck finish. An upper retention portion of the retaining structure has a profile with a reduced footprint as compared to a conventional retaining structure. A lower support portion of the retaining structure has an outermost diameter similar in size to an outermost diameter of a conventional retaining structure. However, the lower support of the lightweight neck finish is formed with one or more circumferentially extending slots and/or one or more vertical slots. The reduced footprint of the retention portion and the slots of the support portion minimize the amount of material, weight, and time and cost required to make the lightweight neck finish, while providing for increased tamper evidence visibility as compared to conventional neck finishes.

A plural preform assembly having nested preforms. The preforms are held together by an interference fit. The interference fit is provided by the friction between the preforms which occurs when the inner preform is inserted into the outer preform. At least one preform may have ribs extending radially towards the other preform. The ribs provided concentricity and interference to hold the preforms together during subsequent operations. The preforms may later be blow molded to provide a bag in bottle or similar container.

A plastic aerosol container includes a main body portion that is constructed and arranged to withstand aerosol pressurization within a range that is about 50-300 psig. The plastic aerosol container also includes a finish portion that is unitary with the main body portion. The finish portion may be threaded or unthreaded. The finish portion has a side wall, an upper sealing surface, at least one helical thread and a support ledge beneath the helical thread. Reinforcement structure is positioned beneath the support ledge for reinforcing the finish portion against deformation due to the pressurization. A method of stabilizing a plastic aerosol container is also disclosed.

A preform has a flange that protrudes outward at a neck, and is supplied in an inverted state. A preform handling device includes a star wheel that is configured so that the preform is supplied to each of a plurality of depressions that are formed in an outer circumferential part of a wheel, and pushes the preform to rotationally transfer the preform from an upstream region to a downstream region, an end face guide member that is provided in the upstream region so as to be situated under the preform and that support and guide an open end face of the preform, and a pair of flange guide members that are provided in the downstream region and that support and guide a lower side of the flange of the preform.

A lightweight neck finish includes a retaining structure that interacts with a tamper band to cause frangible connectors between the tamper band and closure to break upon initial removal of the closure from the neck finish. An upper retention portion of the retaining structure has a profile with a reduced footprint as compared to a conventional retaining structure. A lower support portion of the retaining structure has an outermost diameter similar in size to an outermost diameter of a conventional retaining structure. However, the lower support of the lightweight neck finish is formed with one or more circumferentially extending slots and/or one or more vertical slots. The reduced footprint of the retention portion and the slots of the support portion minimize the amount of material, weight, and time and cost required to make the lightweight neck finish, while providing for increased tamper evidence visibility as compared to conventional neck finishes.

Discloses is a method for manufacturing a dual cosmetic container. The method includes: molding an inner preform 40 or 40a formed with a patterned portion having one or more shapes selected from characters, pictures, figures, and helical grooves on the outer surface thereof using an upper mold 10 for the inner preform having a molding space 11 and formed with a pattern molding portion 12a on the inner circumferential surface thereof and an lower mold 14 for the inner preform having a molding space 15 for a discharge portion; inserting the inner preform 40 or 40a into a molding space 21 of an upper mold 20 for an outer preform, fixing a discharge portion 41 of the inner preform 40 or 40a to a lower mold 23 for the outer preform, feeding a liquid raw material into the molding space 21 of the upper mold 20 for the outer preform, and molding the outer preform 50 in close contact with the outer surface of the inner preform 40 or 40a formed with the patterned portion 42; and simultaneously heating the inner preform 40 or 40a and the outer preform 50 molded in close contact with each other, inserting the two heated preforms into a molding space 31 of a blow mold 30, inserting a blow tube 32 into the discharge portion 41 of the inner preform 40 or 40a, and simultaneously expanding the inner preform 40 or 40a and the outer preform 50 by blow molding to manufacture the desired dual cosmetic container in which an inner container 100 or 100a and an outer container 200 are in close contact with each other.

A plural preform assembly having nested preforms. The preforms are held together by an interference fit. The interference fit is provided by the friction between the preforms which occurs when the inner preform is inserted into the outer preform. At least one preform may have ribs extending radially towards the other preform. The ribs provided concentricity and interference to hold the preforms together during subsequent operations. The preforms may later be blow molded to provide a bag in bottle or similar container.

The present invention relates to a conveyance device with which a subject to be molded can be positioned relative to a forming die. This conveyance device conveys a subject to be molded to one die from among forming dies to which a resin material is supplied from a resin injection part and comprises a retaining unit which retains and delivers the subject to be molded to the one die, a first movement mechanism which moves the subject to be molded having been delivered to the one die in a first direction toward the resin injection part, and a second movement mechanism which moves the subject to be molded having been delivered to the one die in a second direction differing from the first direction.

A synthetic resin preform has a cylindrical mouth portion provided with a male thread on an outer peripheral surface, a cylindrical body portion continuous with the mouth portion and a bottom portion configured to close a lower end of the body portion, the preform being formed into a container of a predetermined shape by blow molding, the synthetic resin preform further including, between the mouth portion and the body portion, a holding surface continuous with the outer peripheral surface of the mouth portion and extending radially inward relative to the outer peripheral surface. Also, a container contains contents having a container filled with contents and configured to close the mouth portion with a cap, the container being formed by blow molding the preform.

A blown bottle includes at least two layers including an inner layer and an outer layer, wherein the inner layer includes an inner layer flange, the outer layer includes an outer layer flange, and wherein a protrusion is formed on either one of the inner layer flange or the outer layer flange, a recess is formed in the other, and the protrusion is fitted to the recess.