A packet includes a cavity containing flowable material and a sealed perimeter portion that defines the cavity. The sealed perimeter portion includes a header portion and a connector tab. An aperture is established through the header portion. The connector tab includes a neck portion and a retaining portion, which has a wider cross dimension than the neck portion. The retaining portion, when inserted through an aperture of a product or another packet, limits retraction from the aperture to join the packet with the product or other packet. A display system includes a plurality of such packets, whereby the retaining portion of a first packet may be collapsed and inserted through an aperture of a second packet, whereby the retaining portion, when expanded to its initial state, limits retraction from the aperture of the second packet to join the first and second packets together.

An injection-molding device for producing at least one tube head having a tube shoulder and a neck formed thereon has a press-out opening comprising a mold that defines a mold cavity and a nozzle that interacts with the mold. The nozzle has a valve needle that can be moved in the nozzle body. The valve needle is surrounded by a first flow channel, through which a first material component can be pressed out. The opening of the nozzle is closed by the valve needle head in a retracted position of the valve needle and released by the valve needle head in an advanced position of the valve needle In the advanced position of the valve needle, an annular outlet opening is formed, which establishes a fluid connection into the mold cavity together with an annular gap of the mold serving as a gate.

An injection-molding device for producing at least one tube head having a tube shoulder and a neck formed thereon has a press-out opening comprising a mold that defines a mold cavity and a nozzle that interacts with the mold. The nozzle has a valve needle that can be moved in the nozzle body. The valve needle is surrounded by a first flow channel, through which a first material component can be pressed out. The opening of the nozzle is closed by the valve needle head in a retracted position of the valve needle and released by the valve needle head in an advanced position of the valve needle In the advanced position of the valve needle, an annular outlet opening is formed, which establishes a fluid connection into the mold cavity together with an annular gap of the mold serving as a gate.

It is an object to provide a deforming element-included dispensing tip, a deforming element-included dispensing device, and a deforming element-included dispensing processing method not requiring any cylinder and capable of achieving highly precise position control and enhancing integration of higher density and reducing the burden in the quality control in reaction processing of a biological material for extraction of DNA and the like. A tip-shaped container formed with a non-deforming wall having an opening portion at an upper side and an inlet unit at a lower side for allowing fluid to flow in and flow out and a sealing plug attached to the opening portion so as to seal the opening portion are provided, and the sealing plug is configured to be provided with a deforming element.

It is an object to provide a deforming element-included dispensing tip, a deforming element-included dispensing device, and a deforming element-included dispensing processing method not requiring any cylinder and capable of achieving highly precise position control and enhancing integration of higher density and reducing the burden in the quality control in reaction processing of a biological material for extraction of DNA and the like. A tip-shaped container formed with a non-deforming wall having an opening portion at an upper side and an inlet unit at a lower side for allowing fluid to flow in and flow out and a sealing plug attached to the opening portion so as to seal the opening portion are provided, and the sealing plug is configured to be provided with a deforming element.

A collapsible container is provided with a one-way valve. The valve comprises a cupola shaped slitted membrane forming a closure head to allow dispensing a liquid contained in the container by opening the membrane under liquid pressure. When pressure is reduced the membrane will close and prevent the entrance of air into the container. To avoid a deformation of the membrane in counter dispensing direction a supporting column is arranged within the valve ending in a distance from the lower side of the membrane. This column will prevent an opening of the membrane closure head towards the container storage room when air pressure in direction into the container is too high to be borne by the membrane closure head alone.

A collapsible container is provided with a one-way valve. The valve comprises a cupola shaped slitted membrane forming a closure head to allow dispensing a liquid contained in the container by opening the membrane under liquid pressure. When pressure is reduced the membrane will close and prevent the entrance of air into the container. To avoid a deformation of the membrane in counter dispensing direction a supporting column is arranged within the valve ending in a distance from the lower side of the membrane. This column will prevent an opening of the membrane closure head towards the container storage room when air pressure in direction into the container is too high to be borne by the membrane closure head alone.

Flexible containers having biased dispensing.

Flexible containers having biased dispensing.

The container comprises a chamber closed by a flexible cover, and it is characterized in that said flexible cover defines a weakened area forming a seal between the chamber and the flexible cover, and in that the container comprises bending means for bending this weakened area so that the flexible cover separates from the chamber at the weakened area, opening said chamber. The container has the main advantage that it can be opened easily, just acting on the bending means.