WO1994004353A1 - Container, process for manufacturing the same, its use and collecting and transporting container therefor - Google Patents
Container, process for manufacturing the same, its use and collecting and transporting container therefor Download PDFInfo
- Publication number
- WO1994004353A1 WO1994004353A1 PCT/EP1993/002121 EP9302121W WO9404353A1 WO 1994004353 A1 WO1994004353 A1 WO 1994004353A1 EP 9302121 W EP9302121 W EP 9302121W WO 9404353 A1 WO9404353 A1 WO 9404353A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- container
- layer
- inner layer
- containers
- layers
- Prior art date
Links
Classifications
-
- 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
- B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
- B65D77/10—Container closures formed after filling
- B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
- B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
- B65D77/2028—Means for opening the cover other than, or in addition to, a pull tab
- B65D77/2032—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container
- B65D77/2044—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container whereby a layer of the container or cover fails, e.g. cohesive failure
- B65D77/2048—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container whereby a layer of the container or cover fails, e.g. cohesive failure whereby part of the container or cover has been weakened, e.g. perforated or precut
- B65D77/2052—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container whereby a layer of the container or cover fails, e.g. cohesive failure whereby part of the container or cover has been weakened, e.g. perforated or precut the container being weakened
-
- 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
- B65D2565/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D2565/38—Packaging materials of special type or form
- B65D2565/381—Details of packaging materials of special type or form
- B65D2565/385—Details of packaging materials of special type or form especially suited for or with means facilitating recycling
-
- 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
- B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
- B65D2577/10—Container closures formed after filling
- B65D2577/20—Container closures formed after filling by applying separate lids or covers
- B65D2577/2025—Multi-layered container, e.g. laminated, coated
-
- 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
- B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
- B65D2577/10—Container closures formed after filling
- B65D2577/20—Container closures formed after filling by applying separate lids or covers
- B65D2577/2025—Multi-layered container, e.g. laminated, coated
- B65D2577/2033—Multi-layered container, e.g. laminated, coated with one or more layers of container being torn off upon initial opening
-
- 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
- B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
- B65D2577/10—Container closures formed after filling
- B65D2577/20—Container closures formed after filling by applying separate lids or covers
- B65D2577/2075—Lines of weakness or apertures
- B65D2577/2083—Lines of weakness or apertures in container flange
Definitions
- Containers processes for their manufacture, use and collection and transport containers therefor
- the invention relates to a container, its use and a collection and transport container therefor.
- the invention relates to a container, the wall of which consists of a carrier layer, an inner layer and optionally at least one further layer, the inner layer adhering to the layer in contact with it in such a way that it can be separated by a predetermined force . If a further layer is arranged on the outside of the container, this can be made removable. Furthermore, a method for producing the container is specified.
- DE 4041 266 AI describes a reusable container, e.g. Known for storage and for shipping paints, glues and plasters, which is composed of a shell and an inner lining.
- the shell and the inner lining are manufactured separately and then inserted into each other.
- the inner lining is inherently stable and mechanically resilient.
- the inner lining can be adapted in a form-fitting manner, and a frictional connection can be produced between the inner wall of the shell and the outer wall of the inner lining.
- a multi-part plastic packaging is known from utility model DE-GM 90 12 139.2, which consists of an internal, flexible film (packaging) and an external, intrinsically stable outer packaging.
- Packaging and outer packaging interact with one another, either through sealing or clamping elements in the edge region of the outer packaging or through non-adherent lamination.
- Either a filled or unfilled bag (packaging pack) is inserted into the preformed, inherently stable outer packaging or a laminate with extremely low bond strength is formed and then filled.
- DE 41 02 326 AI describes a reusable container, in particular a plastic bucket with an inner lining in the form of a removable film.
- a plastic film is glued into a previously made bucket using an adhesive or by heating at least one of the surfaces to be glued and pressing the plastic film. Either strips of the plastic film are used for this, or the film to be glued is simulated in the shape of the inner bucket.
- plastics such as polyethylene, polypropylene and polystyrene are increasingly being used, but a large number of other plastics such as polyvinyl chloride, polyvinyl alcohol and copolymers of the corresponding monomers with one another and with other copolymerizable monomers are also used.
- plastic containers After the filling material has been removed, these plastic containers are usually disposed of with household waste and thus make a considerable contribution to the steadily increasing problems with waste disposal, waste recycling and finally disposal of the waste materials.
- the returned packaging is usually granulated without sorting into the individual types of plastic together with the impurities and processed into recycled material. Because of the relatively large proportion of foreign substances, such as the filling material residues mentioned and the materials used for printing the containers on the outside, and because of the composition of the recycled material from a wide variety of plastics, this recycled material can only be processed into relatively low-value products.
- the object of the present invention is therefore to provide containers made of plastic, which can be mass-produced in a simple and inexpensive manner, and for which the majority of the container material is protected from contamination with the filling material and which make it possible, after removal of the filling material, to carry out the majority of the plastic used to produce the container in a simple, cost-effective and time-saving manner with the least possible contamination , preferably in a completely unpolluted state.
- Another object of the present invention is to provide a method with which the containers can be produced in a technically simple and inexpensive manner.
- Another object of the invention is to provide a collection and transport container for the container materials obtained in unpolluted state.
- a multi-walled container is made available, which was produced by a flat, coextruded film with subsequent thermoforming process, the container consisting of a carrier layer, an inner layer and optionally at least one further layer, which adhere to one another through the coextrusion process, the inner layer being arranged at least in the region of the carrier layer which would otherwise come into contact with the container contents, and the adhesion of the individual layers being adjustable by the coextrusion process, and the inner layer, and a further layer optionally arranged on the outside of the container can be separated by a predetermined force.
- the containers according to the invention can be mass-produced in a technically simple and inexpensive manner.
- the container according to the invention has the further significant advantage that the carrier layer of the container does not come into contact with the filling material, and the residual amount remaining after removal of the filling material from the container together with the entire quantity thin inner layer can be pulled out of the container.
- the predominant portion of the container material namely essentially the carrier layer, is prevented from coming into contact with residues of filling material and can thus be kept in a clean state.
- the inner layer removed from the container can either be recycled, as is currently the entire container, or disposed of in an incineration plant or disposed of in a landfill.
- the inner layer of the container according to the invention has the advantage that, owing to its low material thickness, it has little weight and is so flexible that it can be largely collapsed and thus requires very little space during transport and final storage.
- All layers of the container wall preferably consist of materials which are compatible with one another in recycling.
- the carrier layer which is much stronger in relation to the inner layer, comprises the major part of the plastic used to manufacture the container and essentially gives the container all of its shape and strength.
- the carrier layer obtained in a clean form after removal of the inner layer enables it to be stored by the consumer until a corresponding amount is worth returning to the dealer or manufacturer, or even picking up from the consumer can be considered. This can significantly reduce the return or collection frequency. This is possible because the carrier layer freed from the inner layer can be stored over a long period of time without any unpleasant odors and without health concerns. This enables a collection system in which the carrier layers of the used containers e.g. can be collected in households. Due to their purity, the carrier layers collected in this way can be processed back into high-quality plastic granules in a recycling process, or they can serve as containers for other purposes.
- the collection of the clean carrier layer in the households also enables a sorting into the individual types of plastic used, so that even higher quality ones can be produced by recycling, since only one type of plastic can be used to produce raw materials and products.
- By increasing the quality of the material obtained by recycling the unfavorable price ratio between virgin material and recycled material is also improved.
- the containers according to the invention can also have a peelable layer (outer layer) on the outside, which adheres to the container just like the inner layer and can be peeled off from the container by a predetermined force.
- a peelable layer outer layer
- the removed thin outer layers can be processed or disposed of in the same way as the inner layers.
- thermoplastics are preferably thermoplastics.
- the carrier layer, the inner layer and optionally any further layer can each consist of the same or different materials.
- these parts or layers can consist of thermoplastic, biodegradable material.
- Containers made of polymers such as polyethylene (PE), polypropylene (PP), polystyrene (PS), polyamides (PA), polyester, polyacrylonitrile (PAN), polyethers, polyvinylchloride are usually used.
- PE polyethylene
- PP polypropylene
- PS polystyrene
- PA polyamide
- PET polyacrylonitrile
- PAN polyacrylonitrile
- polyethers polyvinylchloride
- PVDC polyvinylidene chloride
- EVOH ethylene-vinyl alcohol copolymers
- PVAL polyvinyl alcohol
- the support layer which gives the shape stability preferably consists of a material which can withstand the temperature load during hot sterilization without losing its shape, e.g. Polypropylene.
- barrier layer in addition to the sterilization in order to ensure gas, vapor and aroma tightness to increase.
- barrier layers are made from polymers (so-called barrier polymers) which are highly impermeable to gases and also aromatic substances, such as PVDC copolymers, PVAL, EVOH, high-barrier polyamides (high-barrier PA), amorphous polyamides, PAN blends with a high acrylonitrile content, as well as polyamide imides.
- EVOH is preferred as the polymeric material.
- the barrier layer itself can consist of a multilayer material, for example a PA-EVOH-PE composite known per se, or layers of others , identical or different polymers can be arranged on one or on both sides of the polymer of the barrier layer.
- Container walls according to the invention are preferably produced from layers of polyethylene, polypropylene and polystyrene, and also their mixtures and copolymers.
- polystyrene will increasingly take a back seat, because for health reasons, especially in food packaging, the residual monomer content, ie the remaining unreacted styrene, must be reduced to a minimum.
- this reduction in the residual monomer content is very complex and therefore expensive, so that plastics such as polyethylene, polypropylene and their copolymers are preferred.
- the carrier layer consists of polyethylene or polypropylene or an ethylene-propylene copolymer and the inner layer consists of polyethylene, polypropylene, a mixture of polyethylene and polypropylene or an ethylene-propylene copolymer.
- the materials of the individual layers are preferably compatible with one another and can be recycled together.
- the removable inner layer comprises a PE-PP copolymer or a PP homopolymer.
- the carrier layer preferably comprises a mixture of a PE homopolymer and either a PP homopolymer or a PE-PP copolymer.
- the PE homopolymer can be a high density polyethylene (HDPE) or low density
- the ratio of PE homopolymer to the second component of the mixture is in the range from 70:30 to 30:70, preferably 60:40 to 40:60 and 35. more preferably about 50:50.
- the adhesion of the inner layer in particular an inner layer made of a PE-PP copolymer or PP homopolymer, to the carrier layer can be adjusted so that the inner layer adheres to a sufficient extent during use of the container, but after removal of the Filling goods can be separated in one piece from the carrier layer. If necessary, adhesion promoters or release agents can also be used.
- the backing layer may in this case consist of one of the polymers described above, e.g. made of polypropylene.
- this further layer can be applied to one or both of the surfaces of the carrier layer, so that the inner layer with the intermediate layer made of the mixture of PE homopolymer and PP is always Homopolymer or PE-PP copolymer is in direct contact.
- all the layers are largely inseparably connected to one another, with the exception of the inner layer and possibly an outermost layer which serves to print on the container.
- the inner layer and optionally any further layer present next to the carrier layer can consist of biodegradable material.
- biodegradable material Polysaccharides, in particular cellulose, starch, and their derivatives and mixtures of two or more these substances.
- the container wall can e.g. consist of a carrier layer made of polypropylene, an intermediate layer made of a mixture of PE homopolymer and PE-PP copolymer and an inner layer made of a PE-PP copolymer, the layers being sufficient in each case for the containers according to the invention simply by processing by means of coextrusion receive.
- the outermost layer can preferably be printed in order to be able to provide the containers with an inscription.
- the containers can be produced by coextruding the carrier layer, the inner layer and optionally any further layer in a manner known per se, so that a flat material is formed from the desired layers.
- the conditions during the coextrusion are adjusted so that the adhesion between the inner layer and the underlying layer as well as any outermost layer and the container wall has a value in the range of 0.5 to 10 N / cm 2 , preferably 1 to 5 N / cm 2 and more preferably 1.5 to 3 N / cm 2 .
- the flat layer material produced by coextrusion can then be brought into the desired shape of the container by a thermoforming process, such as deep drawing.
- the amounts of material for the individual layers are selected such that the carrier layer is substantially stronger than the inner layer and, if appropriate, any further Layer.
- the carrier layer thus essentially gives the container all of its dimensional stability and strength, and the inner layer, which is very thin in relation to the carrier layer, and optionally any further layer serve only to protect the carrier layer from contamination with the contents or printing inks of the prints , and possibly to increase gas, vapor and aroma tightness and impact strength.
- the thin layer contaminated with printing inks and solvents can be removed from the layer underneath and the latter can again be processed into high-quality starting material.
- the layer thickness ratio of the carrier layer to the inner layer is in the range from 1: 0.3 to 1: 0.01, preferably 1: 0.15 to 1: 0.05 and more preferably in the range of approximately 1: 0 ,1.
- the layer thickness ratio of the carrier layer to a layer optionally arranged on the outside of the container is approximately 1: 0.01 to 1: 0.05.
- the layer thickness of the container wall is in the range from about 0.15 to 5 mm and preferably between 0.15 and 1 mm. At these layer thickness ratios, more than 90% by weight of the plastic used to manufacture the container can be obtained in the form of a plastic granulate due to the high degree of purity, which is clearly above the granules in the recycling cascade that are used in recycling conventional ones Containers can be obtained.
- the carrier layer, the inner layer and optionally any further layer adhere to one another over essentially the entire entire contact area.
- the inner layer is designed such that it can be removed completely and in one piece from the carrier layer by a predetermined force.
- the containers according to the invention can be produced in any form that can be realized by the aforementioned production processes.
- the containers preferably have a stackable shape which is open at the top over essentially the entire cross section without undercuts or with only slight undercuts.
- the clean carrier layers of the containers freed from the inner layer can thus be stacked and stored and transported in a space-saving manner.
- the containers preferably have a standardized shape and size.
- dairy, margarine or ice cream products e.g. standardized containers with a filling volume of 150 to 500 ml and a diameter of the opening of 75 to 95 mm are widely used.
- the containers according to the invention can be provided with a flange-shaped edge or with a lip with a flat sealing surface.
- the flange or the flat sealing surface of the slip edge extends radially parallel to the main standing surface of the container, preferably over a length of 4 to 30 mm away from the container wall.
- Containers with a slip rim can be closed in a conventional manner with a slip lid, e.g. known from margarine cups. However, like the containers with a flange-shaped edge, they can be sealed on their flat sealing surface with a lid made of plastic, paper, aluminum or a paper or aluminum coated with plastic.
- the inner layer and any further layer which may be present on the outside of the container are formed up to the edge of the lip or the flange-shaped edge of the carrier layer.
- the inner layer has one or more tabs by means of which the entire inner layer can be pulled out of the container and the further layer which may be present on the outside of the container also has one or more Tabs which are offset from the tabs of the inner layer and with which the further layer can be pulled off the carrier layer.
- the containers according to the invention can be sealed with a lid. , , _ 15 -
- the containers according to the invention can be used for packaging a wide variety of goods, including liquid, pasty, powdery, granular or solid substances.
- containers according to the invention can be made sterile.
- the present invention also provides a collection and transport container for the containers.
- the purity of the carrier layers after removal of the inner layer and any further layers which may be present and which can be separated off, as mentioned above, allows the carrier layers to be stored and pre-sorted by the consumer.
- the collection and transport container therefore preferably has a shape and size suitable for the household.
- the dimensions of the container can range from 30 to 80 cm in length, 20 to 50 cm in width and 20 to 50 cm in height.
- the container should weigh about 1 to 2 kg when empty. not exceed and should be able to take up about 3 to 5 kg of backing material. Since the containers according to the invention preferably have standardized shapes and sizes, pre-shaped compartments for receiving these standard containers are preferably provided in the collection and transport container, and at least one compartment for containers without standardized sizes and shapes.
- In the collection and transport container can also conventional cleaned containers can be stored and transported.
- the collection and transport container is preferably designed as an all-plastic box or as a corrugated plastic box and consists of the same thermoplastic materials from which the carrier layers of the containers according to the invention are also made.
- a recyclate material made from carrier layers of the containers according to the invention is preferably used to manufacture the collection and transport containers. Providing households with these containers as widely as possible immediately results in a main area of application for the recycled material.
- the surfaces of the collection and transport containers can be provided with a layer of virgin material in order to counteract migration of foreign substances which may be present in the recycled material, such as printing ink residues and solvents.
- the container made of full plastic is advantageously designed to be stackable and the collapsible plastic corrugated box can also be provided with stackable inserts which have pre-punched separating webs for containers with standard sizes and non-standard sizes.
- the container filled with collected carrier layers of the containers according to the invention can either be emptied and reused for the same or another purpose, or it can be granulated and processed together with the collected carrier layers, due to the relatively high purity of the the plastics obtained can be used to produce high-quality products.
- the collection and transport containers can also be used for other purposes, for example container fresh would be transported and can thus replace other packaging material that would otherwise have to be disposed of again. Due to the properties of the plastics from which the containers are made, they are weather-resistant and very resistant and can therefore also be used in the long term.
- 1 a cross section of a container according to the invention
- 2 top view of a container according to the invention with tabs
- 3 shows a layer structure of the container wall of a container produced according to Example 1
- 4 a layer structure of the container wall of a further multilayer container
- 5a and 5b Collection and transport containers for containers according to the invention.
- a container 10 is shown in FIG. a carrier layer 11, an inner layer 12 and a further layer 13, which in this case is located on the outside of the carrier layer 11.
- the inner layer 12 is arranged at least in the region of the carrier layer 11 which would otherwise come into contact with the container contents.
- the layers 11, 12 and 13 can be separated from one another by a predetermined force.
- Figure 2 shows a plan view of an inventive - -
- the inner layer 12 has one or more tabs 30, with which the inner layer 12 can be pulled out of the container in its entirety and the optionally present further layer 13 located on the outside of the carrier layer 11 has one or more tabs 31 which are offset from the tabs 30 of the inner layer 12 and with which the further layer 13 can be removed from the carrier layer 11.
- the tabs 30 of the inner layer 12 may be underlaid by the carrier layer 12, or the tabs 31 of the further layer 13 may or may not be covered by the carrier layer 11.
- FIG. 3 shows the layer structure of the container wall of a container according to the invention produced according to Example 1 below.
- the wall of this container comprises a carrier layer 11, a separable inner layer 12 and, in this case, a further layer (intermediate layer) 13 arranged between them and firmly connected to the carrier layer 11.
- the inner layer 12 can be removed from the further layer 13, the the necessary force is predetermined.
- FIG. 4 shows the layer structure of the container wall of a container according to the invention, which can be sterilized and has a barrier layer.
- the wall comprises (from the inside to the outside) an inner layer 12, a further layer (intermediate layer) 13, a barrier layer 14 against water vapor permeability, a barrier layer 16 against gas permeability with layers 15 and 17 arranged upstream and downstream to increase the adhesive strength of the adjacent layers, a carrier layer 11 and an optionally present layer 18, which can serve as a further barrier layer or, for example, to improve the impact resistance of the container wall, in particular at low temperatures.
- FIGS. 5a and 5b show collection and transport containers 50 and 51 for containers according to the invention.
- the container shown in FIG. 5a is designed as an all-plastic box 50 and has preformed compartments 52 for holding containers according to the invention with different standard sizes and shapes, as well as at least one compartment 53 for containers without a standardized size and shape.
- the container 51 shown in FIG. 5b is designed as a corrugated plastic box and shows a stackable insert 54 which has pre-punched separating webs 55 for containers with standard sizes and non-standard sizes.
- a flat coextrudate with the following layer structure was first produced by coextrusion in a manner known per se:
- 3rd carrier layer (11) PP homopolymer, type 14 M)
- the layer thickness of the inner layer (12) was approximately 0.2 mm, the intermediate layer (13) approximately 0.2 mm and the carrier layer (11) approximately 0.8 mm.
- the intermediate In this case, layer (13) has a softening point which is above the sterilization temperature.
- a container was produced from the coextrudate by deep drawing.
- the inner layer could be pulled out of the container in one piece, while the intermediate layer could not be separated from the carrier layer.
- the adhesive strength or the force required for the separation of the inner layer of the inner layer of the container according to the example was determined as follows.
- a two centimeter wide strip was cut off from the flat coextrudate obtained and glued with the side forming the later inner layer of the container upwards along the circumference of a wheel with a diameter of 25 cm. Then the inner layer was carefully lifted off at one end from the underlying layer by about 1 cm and clamped in a clamp of a tensile force measuring device. The inner layer was then removed at a constant speed.
- the value for the required force was 2 N / cm 2 .
- the present invention thus provides a container 10 which can be manufactured in a simple and inexpensive manner and whose wall is made of. a carrier layer 11, an inner layer 12 and optionally at least one further layer 13 which adhere to one another and wherein the inner layer 12 can be separated by a predetermined force.
- the inner layer 12 and the optionally present further layer 13 or layers 13 protect the carrier layer 11, which comprises the predominant amount of the container material, from contamination with the filling material and can be removed after removing the filling material and removing the inner layer 12 and possibly existing further layer 13, provided that it is located as a printed, separable layer on the outside of the container, is obtained in pure form and is fed to new high-quality products by recycling.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Packages (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59302841T DE59302841D1 (en) | 1992-08-26 | 1993-08-10 | CONTAINER, METHOD FOR THE PRODUCTION, USE AND COLLECTION AND TRANSPORT CONTAINER THEREFOR |
EP94908170A EP0659116B1 (en) | 1992-08-26 | 1993-08-10 | Container, process for manufacturing the same, its use and collecting and transporting container therefor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4228391A DE4228391C2 (en) | 1992-08-26 | 1992-08-26 | Container, its use and collection and transport container therefor |
DEP4228391.4 | 1992-08-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994004353A1 true WO1994004353A1 (en) | 1994-03-03 |
Family
ID=6466487
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1993/002121 WO1994004353A1 (en) | 1992-08-26 | 1993-08-10 | Container, process for manufacturing the same, its use and collecting and transporting container therefor |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0659116B1 (en) |
DE (2) | DE4228391C2 (en) |
WO (1) | WO1994004353A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3027382B1 (en) | 1998-07-24 | 2000-04-04 | 株式会社ヨコタ | Easy recycling container |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5062569A (en) * | 1988-08-01 | 1991-11-05 | Hekal Ihal M | Peelably sealed plastic packages and method of preparing same |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3803539A1 (en) * | 1988-02-05 | 1989-08-17 | Unilever Nv | Packaging item made of thermoplastic film |
DE9012139U1 (en) * | 1990-08-23 | 1990-10-25 | Hoechst Ag, 6230 Frankfurt | Packaging with outer packaging |
DE4041266C2 (en) * | 1990-12-21 | 1993-11-04 | Sto Ag | USE OF A MULTIPLE-WAY CONTAINER |
DE4102326A1 (en) * | 1991-01-26 | 1992-07-30 | Gefinex Gmbh | Multi-purpose container, esp. plastics bucket - has removable, stick-on inner and/or lining |
DE9103346U1 (en) * | 1991-03-19 | 1991-06-20 | Boßmann, Heinz, 5227 Windeck | Medicine tray |
DE9106088U1 (en) * | 1991-05-17 | 1991-08-14 | Hager, Wolfgang, 32839 Steinheim | Container with a precisely fitted film using the blow molding process |
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1992
- 1992-08-26 DE DE4228391A patent/DE4228391C2/en not_active Expired - Fee Related
-
1993
- 1993-08-10 WO PCT/EP1993/002121 patent/WO1994004353A1/en active IP Right Grant
- 1993-08-10 DE DE59302841T patent/DE59302841D1/en not_active Expired - Fee Related
- 1993-08-10 EP EP94908170A patent/EP0659116B1/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5062569A (en) * | 1988-08-01 | 1991-11-05 | Hekal Ihal M | Peelably sealed plastic packages and method of preparing same |
Also Published As
Publication number | Publication date |
---|---|
DE4228391A1 (en) | 1994-03-03 |
EP0659116A1 (en) | 1995-06-28 |
EP0659116B1 (en) | 1996-06-05 |
DE59302841D1 (en) | 1996-07-11 |
DE4228391C2 (en) | 1994-09-08 |
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