Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
  • B65B31/006—Adding fluids for preventing deformation of filled and closed containers or wrappers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
  • B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
  • B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
  • B65D81/2069—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas in a special atmosphere
  • B65D81/2076—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas in a special atmosphere in an at least partially rigid container

Definitions

• the invention relates to a pack for filling goods and a method for packaging filling goods which react with at least one of the gases contained in the air in airtight closable containers made of thermoplastic material, the wall of which is impermeable to gases. Difficulties have arisen in particular in the case of bottles of the aforementioned type in that the container bulges during the usual storage time, that is to say the time between the filling of the container and the removal of the filling material. This is due to the fact that the filling material reacts with the air, in particular the oxygen contained therein, which is located in the space of the container not filled with filling material.
• the invention is also based on containers whose walls are impermeable to gases, in particular oxygen.
• gases in particular oxygen.
• the container can also consist of other plastics which, due to their elastic deformability, bulge under the influence of an external overpressure.
• containers whose walls are impermeable to gases also have the advantage that no diffusion is possible in the reverse direction. This can be of importance if the filling z. B. contains organic solvents.
• the invention is therefore based on the object of modifying the packaging and methods of the type described in the introduction in such a way that the difficulties which occur in plastic bottles due to the development of negative pressure due to the reaction of the filling material with constituents of the air are avoided.
• This is to be achieved in a way that avoids restrictions in the choice of the container shape and, moreover, gives the possibility of making the wall thickness of the container only according to the other requirements, i.e. without the need for a larger one in view of the risk of denting Choose wall thickness than would otherwise be necessary.
• the invention proposes that the space remaining empty from the filling material inside the container is filled with an inert gas.
• the main advantage that can be achieved by the invention is based on the fact that, contrary to the considerations made in the aforementioned prior publication, no attempt is made to take the occurrence of negative pressure into account by means of suitable measures. Rather, it is done in such a way that the cause that leads to the creation of the negative pressure is eliminated.
• This is done with simple means, since it is easily possible to design a device with which the containers are filled so that the containers can be gassed with inert gas. This can be done in such a way that the still empty container, before it is filled, is gassed with inert gas, displacing the air previously present in the container. It is also possible to only fill the free head space with inert gas after the filling process has ended. A combination of both measures is also possible.
• N 2 that is nitrogen
• CO 2 i.e. carbon dioxide
• the choice of inert gas will depend on the nature of the filling material, since it is important to prevent the gas in the space of the container not filled with the filling material from entering into the filling material or otherwise, e.g. B. is consumed by absorption.
• the invention enables the use of bottles and similar containers made of plastic in a simple and economical manner even in those application areas which were previously reserved for containers made of other materials, in particular those made of glass and sheet metal, due to the difficulties described above.

Priority Applications (1)

Applications Claiming Priority (1)

Publications (1)

Family

ID=8192144

Family Applications (1)

Country Status (1)

Cited By (2)

Citations (3)

• 1984
  • 1984-09-07 EP EP84110696A patent/EP0173763A1/fr not_active Withdrawn

Patent Citations (3)

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