A method for manufacturing a container (100) having a covering layer includes: acquiring a preform (200) having a preform covering layer (204) formed by using a synthetic resin having thermoplasticity, the preform being a material for forming a container (100) having a covering layer (104) manufactured by blow molding; setting the preform (200) in a blow mold (310) wherein a blade (440) is provided to a portion of a surface of the blow mold (310) with where the container is brought into contact, the blade having a height that corresponds to a thickness of the covering layer (104); and forming the container (100) having the covering layer (104) by performing blow molding on the preform (200), the covering layer having a slit (190) formed by the blade (440).

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.

Apparatus for forming hollow containers (110), suitable to contain in particular one or more liquid or semi-liquid food products, starting from parisons (F) made of thermoplastic material. The apparatus comprises a matrix (11) defined by a pair of molds (12) cooperating with each other to define a cavity (13) shaped like the container (110) to be formed, and to define a support channel (14), configured to define an additional portion (112) of said container (110). The apparatus also comprises a forming punch (17), operatively mobile through said support channel (14) to enter into/exit from said cavity (13) so as to thrust and blow one of said parisons (F) against the walls of said cavity (13) to form at least said container (110).

A stretch blow moulding method for manufacturing a plastic container, wherein a preform, configured in an essentially tubular manner with a neck part, is inserted into a mould cavity of a blow moulding tool of a stretch blow moulding machine. The preform is stretched with a stretching mandrel and is inflated in accordance with the mould cavity by overpressure with a fluid. A dome connects onto a container section which is provided with at least one structure which projects or recedes with respect to the container wall and is separated away. With the stretch blow moulding method, at least one section of the structure is axially compressed to a settable extent within the mould cavity before the plastic container is removed from the mould.

A stretch blow moulding method for manufacturing a plastic container, wherein a preform, configured in an essentially tubular manner with a neck part, is inserted into a mould cavity of a blow moulding tool of a stretch blow moulding machine. The preform is stretched with a stretching mandrel and is inflated in accordance with the mould cavity by overpressure with a fluid. A dome connects onto a container section which is provided with at least one structure which projects or recedes with respect to the container wall and is separated away. With the stretch blow moulding method, at least one section of the structure is axially compressed to a settable extent within the mould cavity before the plastic container is removed from the mould.

A blow core mold unit includes a first core member configured to be loosely fitted to a neck portion of a preform, a second core member provided around the first core member and in contact with a neck mold, and a third core member provided in a space portion formed between the first core member and the second core member, and the blow core mold unit has a second supply flow path for supplying a high-pressure fluid into the space portion.

A blow core mold unit includes a first core member configured to be loosely fitted to a neck portion of a preform, a second core member provided around the first core member and in contact with a neck mold, and a third core member provided in a space portion formed between the first core member and the second core member, and the blow core mold unit has a second supply flow path for supplying a high-pressure fluid into the space portion.

A blowing tool for a blow molding machine for producing hollow members with an angled neck includes a handling device for the blowing mandrels which enables a biaxial movement of the blowing mandrels within a plane. The blowing tool has a blowing mandrel retention member, wherein at least one blowing mandrel is arranged on the blowing mandrel retention member and each blowing mandrel is arranged in an inclined manner with respect to horizontal at a corresponding angle of inclination. The handling device includes a biaxial system configured to move each blowing mandrel retention member in a first, preferably vertical direction and a second, preferably horizontal direction within a plane.

A wide-neck synthetic resin container has a neck, a body and a bottom. A top side of the neck is sealed by a cap. The neck includes a neck tubular section, an engagement section protruding outward therefrom and engaging the cap, and a flange protruding outward at the top side. The flange protrudes less than the engagement section. The neck's top side includes a first top side formed by the neck tubular section, and a second top side formed by the flange that is the same height level with the first top side and increases an area of the top side. The neck tubular section has a uniform thickness at an area immediately below the flange and an area where the engagement section is formed. A thickness of the flange is smaller than that of the neck tubular section, and the neck has been crystallized.

A wide-neck synthetic resin container has a neck, a body and a bottom. A top side of the neck is sealed by a cap. The neck includes a neck tubular section, an engagement section protruding outward therefrom and engaging the cap, and a flange protruding outward at the top side. The flange protrudes less than the engagement section. The neck's top side includes a first top side formed by the neck tubular section, and a second top side formed by the flange that is the same height level with the first top side and increases an area of the top side. The neck tubular section has a uniform thickness at an area immediately below the flange and an area where the engagement section is formed. A thickness of the flange is smaller than that of the neck tubular section, and the neck has been crystallized.