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
  • B65D23/00—Details of bottles or jars not otherwise provided for
  • B65D23/08—Coverings or external coatings
  • B65D23/0842—Sheets or tubes applied around the bottle with or without subsequent folding operations
  • B65D23/0857—Sheets or tubes applied around the bottle with or without subsequent folding operations and locked to the bottle by mechanical means, e.g. tabs snapping into recesses of the bottle
• • 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
  • B65D77/04—Articles or materials enclosed in two or more containers disposed one within another
  • B65D77/0413—Articles or materials enclosed in two or more containers disposed one within another the inner and outer containers being rigid or semi-rigid and the outer container being of polygonal cross-section formed by folding or erecting one or more blanks, e.g. carton
  • B65D77/0426—Articles or materials enclosed in two or more containers disposed one within another the inner and outer containers being rigid or semi-rigid and the outer container being of polygonal cross-section formed by folding or erecting one or more blanks, e.g. carton the inner container being a bottle, canister or like hollow container

Definitions

• the invention relates to packaging for pourable goods, such as liquids or free-flowing fine granules, which consists of an inner blow-molded plastic hollow body with a neck-shaped, closable opening that holds the goods to be packaged, and a sleeve-shaped wrapping made of cardboard surrounding the plastic hollow body. which is fixed in a form-fitting manner on the hollow plastic body, the hollow plastic body for this purpose having at least one indentation on the outer edge, which corresponds to a pre-punched region of the wrapping made of cardboard which can be folded inward during assembly for locking purposes.
• Such packaging is known from DE-39 21 258-A1 by the applicant. With this packaging it is possible, even when the blow molding process is separate, to simply assemble the two packaging parts, namely the plastic hollow body on the one hand and the wrapping on the other hand in the correct position to form a secure bond, and also to disassemble them again easily after use in order to combine both packaging components to be able to dispose of them separately.
• Very thin-walled blow-molded plastic containers made of polyethylene (PE) with a very thin wall thickness in the range from 0.1 to 0.3 mm and a covering made of a bottom and lid-free support jacket made of cardboard are preferably used, but the wall thickness in the head area of the hollow plastic body Strength reasons must be dimensioned significantly larger. This creation of a hollow plastic body with different regions Wall thicknesses are in principle possible in a blow molding process, but complicates the manufacturing process.
• the object of the invention is to improve a generic packaging in such a way that the plastic content can be further reduced without impairing the dimensional stability of the composite packaging and the blow molding process can be further simplified.
• the hollow plastic body is completely thin-walled and the cardboard cover is closed for positive engagement with the head part of the hollow plastic body in the head area, forming a push-through opening for the neck-shaped opening is.
• the hollow plastic body can be formed uniformly with the same thin wall thickness both in the side wall areas as in the head and bottom part.
• the head part opens into a neck-shaped opening.
• PE polyethylene
• PET polypropylene
• PET polyethylene terephthalate
• tabs made of cardboard are preferably articulated on the upper edge of the side wall regions of the cardboard casing, which then are pivoted through 90 ° to produce the packaging and are pivoted together be glued.
• the head region of the wrapping made of cardboard, which is closed in this way, is then provided with a punched hole, the diameter of the punched hole being selected such that the neck-shaped opening of the blow-molded hollow plastic body can be pushed through.
• the neck-shaped opening is advantageously locked against the punched hole. This is achieved in that a receiving ring blown onto the neck-shaped opening of the blow-molded plastic hollow body tapers slightly conically in the direction of insertion. This leads to a particularly firm connection of the composite packaging in the filling, transport and use position. After emptying the packaging, plastic and cardboard parts can easily be separated.
• the total wall thickness of the hollow plastic body is advantageously only about 0.1 to 0.3 mm.
• the present invention By forming a closed investment area In the head area of the cardboard wrapping, it is possible with the present invention to design the hollow plastic body in the area of the head part with the uniform, very thin wall thickness between 0.1 and 0.3 mm, since the necessary strength in this area is also provided by positive locking
• the head part of the hollow plastic body is brought into contact with the head region of the closed wrapping made of cardboard.
• the weight of the hollow plastic body at a nominal volume of 1 l is only about 15-18 g and is thus about 25-40% less than the weight of previously known hollow plastic bodies without complete thin-walled design.
• the hollow plastic body thus weighs no more than a refill film bag of the same content, but in contrast offers significantly better handling properties, and the hollow plastic body is also resealable.
• the surface of the hollow plastic body is structured. In this way, in the case of thin-walled hollow plastic bodies
• the invention also provides that the head and / or bottom part of the hollow plastic body is rounded. This ensures a better and more complete emptying of the hollow plastic body. Liquid or granular residue quantities are avoided, unlike with angular packaging bodies.
• the product flows or rie ⁇ selt evenly to the opening, so that the hollow plastic body completely can be emptied without requiring special handling techniques such as tapping, shaking, pressing, pressing together or the like.
• the manufacturability of the hollow plastic body is improved by a rounded design of the head and / or bottom part.
• the plastic material in the blow molds lies evenly against the blow molds in all areas, both in the side wall areas and in the area of the head and bottom part, so that undesired thin spots in corner or edge areas no longer form.
• the at least one indentation on the outside edge in the hollow plastic body in the outlet area of the rounded bottom part is also easy to manufacture. It does not constitute a hindrance when filling and emptying the packaging and, in conjunction with the pre-punched area of the cardboard wrapping which can be folded inwards and in cooperation with the form-fitting contact of the head part of the hollow plastic body with the head area of the cardboard wrapping, ensures that the entire packaging is securely locked . At the same time, it facilitates the production of the hollow plastic body in the extrusion blow molding process.
• the composite packaging can thus be put together immediately after the production of the hollow plastic body by means of a packaging machine developed for this purpose and then reach the filling line like the usual plastic bottles and be filled there on conventional systems. After emptying the packaging for bulk goods to be used as a long-term or refill pack, it can be fed in a very simple manner to a pure material recycling.
• the hollow plastic body and the cardboard wrapping can be easily separated from one another simply by tearing open the cardboard wrapping, the cardboard wrapping subsequently being able to be used for recycling the waste paper, and the completely emptied hollow plastic body for plastic recycling. The separation between the two substances can bring about the consumer themselves without the use of expensive technology.
• FIG. 2 shows a wrapping made of cardboard for packaging with a closed head area and a push-through opening
• Fig. 3 shows the composite packaging according to Figures 1 and 2 with a closure on the neck-shaped opening of the plastic hollow body.
• the composite packaging generally designated 1, consists in the example shown of a cross-sectionally essentially square plastic hollow body 2 and a support jacket 3 made of cardboard or a comparable material.
• the neck-shaped opening 6 has a receiving ring 7 blown on the outside and tapering slightly in the insertion direction.
• the exemplary embodiment shows an indentation 8 on the outer edge in the outlet area of the rounded bottom part 4.
• the wrapper 3 is shown from cardboard. This initially has four side surfaces 9. On the upper edges 10 of the side surfaces 9 flaps 11 are hinged inwards at an angle of 90 °, which in the exemplary embodiment are folded together in the form of an automatic floor and are glued together.
• the machine base has a centered punch 12 in the middle.
• the wrapping made of cardboard 3, as shown in the bottom right in FIG. 2 has a folded-in, pre-punched area 13 for engaging in the indentation 8 in the hollow plastic body 2 in the composite position.
• FIG. 3 shows the composite composite packaging 1 composed of the hollow plastic body 2 and the cardboard wrapping 3.
• the hollow plastic body 2 is inserted into the cardboard wrapping 3, which is open from below, and the neck-shaped opening 6 of the hollow plastic body 2 is inserted through the push-through opening 12 with the blown receiving ring 7 inserted the cardboard wrapping 3, the foldable, pre-punched area 13 of the cardboard wrapping 3 is then folded in and engages in the recess 8 on the outer edge of the hollow plastic body 2, thereby locking the two packaging parts against one another.
• the head part 5 of the hollow plastic body 2 fits positively in the head region of the folded and glued flaps 11 of the cardboard wrapper 3.
• the assembled packaging 1 visibly has no plastic parts in the position of use except for the neck-shaped opening 6, which is provided with a reclosable closure 14.
• the cardboard wrapping 3 can, if necessary, be constructed in multiple layers, the neck-shaped opening 6 can be provided at another location on the plastic hollow body 2 and the push-through opening 12 at another location on the cardboard wrapping 3.
• the foldable area 13 or the entire cardboard wrapping 3 can also be attached and secured to the hollow plastic body 2 with an adhesive layer (e.g. hot melt).
• the closure 14 used can be used in a simple embodiment but also with a tamper-evident ring on the lower edge, which at the same time presses the casing 3 in the area of the push-through opening 12 under the receiving ring 7.
• the original Lity ring hang there and additionally secures the position of the casing 3 on the hollow plastic body 2.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Packages (AREA)
• Containers Having Bodies Formed In One Piece (AREA)
• Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=6536217

Family Applications (1)

Country Status (5)

Families Citing this family (3)

Family Cites Families (8)

• 1994
  • 1994-12-17 DE DE4445213A patent/DE4445213A1/de not_active Withdrawn
• 1995
  • 1995-12-09 AT AT95942093T patent/ATE186885T1/de active
  • 1995-12-09 ES ES95942093T patent/ES2140724T3/es not_active Expired - Lifetime
  • 1995-12-09 DE DE59507298T patent/DE59507298D1/de not_active Expired - Lifetime
  • 1995-12-09 WO PCT/EP1995/004860 patent/WO1996018548A1/fr active IP Right Grant
  • 1995-12-09 EP EP95942093A patent/EP0796204B1/fr not_active Expired - Lifetime

Non-Patent Citations (1)

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