A method for producing a multiple preform, including a primary injection for injection molding a preform main body using a primary mold, and a secondary injection for injection molding, using a secondary mold, a covering layer that covers the preform main body such that the terminal end side of the covering layer covers the lower surface of the neck ring and reaches the peripheral edge of the neck ring. A projection strip portion is formed when the preform main body is inserted into the secondary mold to be clamped, that projects in a gap in which the covering layer is molded to be in contact with or adjacent to a lower surface of the neck ring, and that extends with a given length along an axis direction, is formed on an inner peripheral surface of the secondary molding mold, thereby forming an easy tear portion in the covering layer.

A collapsible travel bottle comprising a flexible main body comprising an inner space for receiving a liquid therein, the main body including an upper portion, a middle portion, and a lower portion, an opening in the upper portion in communication with the inner space to allow receiving and discharging of the liquid within the flexible main body, a rigid collar coupled to the upper portion proximate the opening, a rigid cap coupled to the rigid collar to restrict receiving and discharging of the liquid within the flexible main body through the opening, the middle portion configured to enable both the top portion and the middle portion to collapse fully into the bottom portion.

A vial for fluid products, particularly pharmaceutical, cosmetic, and medical products has a containment body closed by a closing element removable along a predetermined breaking line, and an opening key slidingly fitted onto the closing element and prismatically rotationally engageable with the closing element to remove the closing element from the containment body. The opening key is prismatically engageable with the closing element by inserting prismatic protrusions of the closing element into special recesses of the opening key.

Thermoplastic containers comprising an integrated separating component, as well as methods for converting the thermoplastic containers from a three-dimensional configuration into a configuration for enhanced recyclability, are provided. Systems and methods involving the thermoplastic containers are also provided.

A single-use container for fluid products, particularly pharmaceutical, cosmetic, and medical products is provided. The single-use container has a containment body, a closing element removable along a predetermined breaking line, and an opening key slidingly fitted onto the closing element and prismatically rotationally engageable therewith to remove the closing element from the containment body. The single-use container has child-proof and anti-tampering elements. When an axial compression force acts on the opening key, the child-proof and anti-tampering elements generate an axial counterthrust upwards in direction of prismatic decoupling between the opening key and the closing element.

A collapsible travel bottle comprising a flexible main body comprising an inner space for receiving a liquid therein, the main body including an upper portion, a middle portion, and a lower portion, an opening in the upper portion in communication with the inner space to allow receiving and discharging of the liquid within the flexible main body, a rigid collar coupled to the upper portion proximate the opening, a rigid cap coupled to the rigid collar to restrict receiving and discharging of the liquid within the flexible main body through the opening, the middle portion configured to enable both the top portion and the middle portion to collapse fully into the bottom portion.

A vial for fluid products, particularly pharmaceutical, cosmetic, and medical products has a containment body closed by a closing element removable along a predetermined breaking line, and an opening key slidingly fitted onto the closing element and prismatically rotationally engageable with the closing element to remove the closing element from the containment body. The opening key is prismatically engageable with the closing element by inserting prismatic protrusions of the closing element into special recesses of the opening key.

Provided is an accommodating device for different materials, which includes a fixed part fixed around a container neck and an operating part disposed around the fixed part and coupled thereto. An accommodating part having a storage space extends downward within the operating part, and a lower end part and an outer ring-shaped part of the accommodating part are sealed by a sealing support part and a sealing part of the fixed part disposed around the container neck and coupled thereto. In the accommodating part, a tab for breaking perforations, which is formed on a lower end of the accommodating part of the operating part, breaks the perforations formed between the sealing support part and the sealing part when a consumer rotates the operating part. During this process, a protrusion part protruding from the upper side of the sealing part is pushed downward by a side protrusion piece of the operating part so that the different type of material stored in the storage space of the accommodating device falls into the container and undergoes a mixing process. The sealing support part disposed around the outer ring-shaped part of the accommodating part and coupled thereto and the sealing part formed inside the sealing support part are configured such that an inner ring-shaped part of the sealing part tightly contacts an inner wall part of the lower end of the accommodating part so as to maintain sealing force thereof.