A method and device for producing an optimized neck contour on preforms below the neck which is optimal for subsequent stretch blow molding. The geometry has a significantly thinner wall thickness than the neck itself. The preform can only be produced in the injection molding tool, when axial channels are used on the point or the vanes produce the thin points on the preform during injection molding. The thin-walled geometry on the preform can be produced outside of the mold during post-cooling by embossing. The preform is then removed in a cooled receiving sleeve and is cooled in the body by intensive contact cooling while no cooling contact is made with the preform neck due to the initial position of the embossing element. Due to the reheating of the neck they can be mechanically deformed into a new geometry advantageous for blow molding and thus wall thickness can be influenced.

A method of manufacturing an off-center container includes: stretching a preform made of resin having a bottomed shape with a stretching rod, heating the preform; and blow-molding the off-center container, in which a central axis of a neck portion is displaced from a central axis of a body portion, by introducing a pressurized fluid into the preform disposed in a mold. The container has a flat shape and a dimension in a first direction in a cross section is longer than in a second direction perpendicular to the first direction. In a circumferential cross section of the preform, a thickness of a first region corresponding to a surface extending in the first direction of the container is set to be thicker than a thickness of a second region corresponding to a surface extending in the second direction of the container.

Non-symmetric and volume reduced preforms and containers stretch blow moulded therefrom by a continuously rotating, preform feed, stretch-blow-moulding machine dedicated to the stretch-blow-moulding of containers from non-symmetric or reduced volume injection moulded preforms; the non-symmetric or reduced volume preforms including an integral handle extending from a first junction point to a second junction point on a body of the preform; the body of the preform and the integral handle constituted from the same material.

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.

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.

The invention relates to a blow-molded recipient including a reservoir, the reservoir having a bottom wall including an opening, a central element arranged at the opening of the reservoir, and a socket arranged to surround the central element. Both the socket and the central element show a lower end and an upper end and are connected by their respective upper ends by a disc with a central aperture. The assembly includes the socket, the central element and the disc, forming a ring that comes into one piece. At least a part of the bottom wall of the reservoir is arranged to face the disc. The reservoir is irreversibly fixed to the ring.

Method of making a blow molded article from a preform including: a) providing a preform of a thermoplastic material having a plurality of effect structures each having an effect surface having a normal with an orientation, the preform having a body with one or more walls and an opening, wherein at least a portion of the one or more walls of the preform has a three-dimensional pattern of cavities and/or protrusions thereon; and b) blow molding the preform to form a blow molded article, wherein the step of blow molding the preform changes the orientation of the normal of at least some of the effect surfaces of the effect structures to create a visual effect in at least one wall of the blow molded article.

A preform for a stretch-blow-molded plastic container includes an elongated, tube-like preform body. An outer wall and an inner wall delimit a bottom thickness (b). An outer wall and an inner wall delimit a wall thickness (w). An inner surface and an outer surface (E1) curved in three-dimensionally convex manners are spaced apart such that a distance from their respective apex (S, S′) to the preform body continuously increases. Extensions of the outer wall of the preform bottom along the outer three-dimensionally curved surface (E1), and of the inner wall of the preform bottom along the inner three-dimensionally curved surface (E2) are configured to be interrupted by set-backs area outside of their respective apex (S, S′) thereof.

A preform for a stretch-blow-molded plastic container includes an elongated, tube-like preform body. An outer wall and an inner wall delimit a bottom thickness (b). An outer wall and an inner wall delimit a wall thickness (w). An inner surface and an outer surface (E1) curved in three-dimensionally convex manners are spaced apart such that a distance from their respective apex (S, S′) to the preform body continuously increases. Extensions of the outer wall of the preform bottom along the outer three-dimensionally curved surface (E1), and of the inner wall of the preform bottom along the inner three-dimensionally curved surface (E2) are configured to be interrupted by set-backs area outside of their respective apex (S, S′) thereof.

A preform suitable for subsequent blow-molding into a final-shaped container comprises: a neck portion; a base portion; and a body portion extending between the neck portion and the base portion; the body portion being defined between an inner surface having a circular transverse cross-sectional shape and an outer surface also having a circular transverse cross-sectional shape, the inner and outer surfaces being non-concentric, such that a wall thickness of the body portion varies circumferentially around the preform. A preform handling apparatus for retrieving a preform from a mold comprises a take-off device having a preform carrier and a take-off device alignment mechanism for maintaining the preform carrier in alignment with a contact surface of a body portion of the preform regardless of any offset between a longitudinal axis of a cylindrical outer surface of the body portion and a longitudinal axis of a cylindrical inner surface of the body portion.