WO1994021530A1

WO1994021530A1 - Blister packages with integral wrapper for small-dimensional products

Info

Publication number: WO1994021530A1
Application number: PCT/EP1994/000739
Authority: WO
Inventors: Urban Stricker
Original assignee: Urban Stricker
Priority date: 1993-03-24
Filing date: 1994-03-10
Publication date: 1994-09-29
Also published as: DE4309584A1

Abstract

The invention pertains to the structural design, materials selection and manufacturing technics of blister packaging for small-dimensional products such as tablets, candies, small components or the like. The invention proposes that individual functional elements which are standard with conventional commercial blister packs are combined in one integral unit which is produced from a thermoplastic plastic by thermoforming or injection molding. Thus, the blister, wrapper and possibly additional product information functions can be combined in a one product made from one material. Such blister packages offer advantages over conventional ones in terms of production, use, and disposal or material recycling.

Description

Blister packaging for small-sized products with integrated DM packaging

State of the art:

Blister packs for small-sized products today mostly consist of a material combination of plastic film with aluminum, paper or a composite film (paper / AI, AI / plastic or paper / plastic). The plastic film is the cover film that has the blister recesses for receiving the filling material. The aluminum, the paper or the composite film serves as a push-through or tear-open film for opening the packaging and for removing the products individually.

Blister packs ensure multiple packaging functions in the distribution, sale and use of goods. Using the example of sales packaging for pharmaceutical products (tablets, capsules, etc.), the functional elements of the sales packaging and their functions are listed in the following table. The example of sales packaging for pharmaceutical products is chosen here since a high quality standard must be guaranteed for these products. The actual blister packaging is a functional element of the entire sales packaging.

The requirements which have so far been placed on sales packaging for pharmaceutical products, some of which are prescribed in relevant regulations, are guaranteed by the conventional form of the packaging. Packaging element function

1. Cover film made of synthetic barrier effect (H ₂ 0), fabric (PVC, PP, PET) 0 ₂ , light, etc.) inert behavior towards filling material, automatic fillability

Sealability Protection against mechanical damage, possibly transparency for filling control

2. Push-through film (AI, filling protection material AI / paper, AI / plastic inert behavior, paper / plastic compared to filling material, paper) sealability defined tear behavior printability

3rd from 1st and 2nd combined operating system set blister product information possibly user guidance (e.g. contraceptives)

4. Package insert stating the product information

5. folding box made of cardboard display information ton sales container sales container

Table 1: Functional conventional pharmaceutical sales packaging Task:

Due to the problem pressure with regard to disposal, modern packaging has the additional function of simple material usability at the highest possible quality level. It is known that material combinations and composite elements, as are common in today's packaging, are a hindrance to simple material recycling or further recycling.

The invention is based on the object of developing packaging which is simple to recycle, in particular for filling goods from the pharmaceutical sector. All functions mentioned above should be retained. At the same time, a technology similar to conventional packaging machine technology should continue to be used.

Description:

To solve this task, design, material technology and production engineering aspects are taken into account equally.

The functional elements of conventional packaging are made according to claim 1 of thermoplastic and structurally summarized so that after the

Use results in a single unit to be disposed of. For this purpose, either the blister and the folding box are formed from a single film, or the folding box (Tab. 1, point 5) and possibly other functional elements, such as one

Foil for printing additional product information, according to

Claim 3 Cohesive with the blister packaging (Tab. 1,

Point 3) connected. The product information (Tab. 1 point 4) can be printed on the surfaces of the folding box and / or according to claim 3 alone or additionally printed on a likewise integrally bonded film. The

Blister is according to claim 2 from a film by Folding and welding formed or formed according to claim 3 using welded cover and push-through film.

Thermoplastic is chosen as the material for the packaging. For reasons of physiological harmlessness, only new plastic goods are used for the packaging of pharmaceutical or food products in the area of product contact. For the variant according to claim 3, in which the blister and folding box material are bonded to one another, secondary processed plastic can also be used for the folding box material according to claim 4. The types or types of plastic used are, according to claim 1, those which are in joint remelting recycling are compatible with one another. If secondary-processed plastic is used, it can be made of such material that results from internal punching and scrap waste or from the waste material collection in the internal recycling. Plastic types are preferably PVC, PET or PP, since there is a sufficient variety of special types available for these types, such as are necessary for thermoforming, foldability, weldability, printability and physiological harmlessness.

The packaging is preferably made of thermoplastic film as a semi-finished product. This semifinished product is deep-drawn and / or embossed on conventional thermoforming machines. Printing can take place before or after the thermoforming process. Alternatively, production by injection molding with the formation of appropriate blister recesses and folded edges is possible. The preformed parts can be filled on conventional packaging machines with slight modification. Welding and / or sealing as well as folding of thermoplastic films is also possible without problems with conventional packaging machines. Examples:

FIG. 1 shows the design of a packaging for tablets, chewing gum or the like. The intermediate stage 2 is formed from a film 1 in a thermoforming process. In addition to the blister recesses for the contents, this has 3 film hinges 4 as reversible folded edges. The tab 5 serves in connection with the edge 6 as an openable closure element for the packaging. A plastic film 7 suitable as a push-through film is welded to the cover film 8 after the blister troughs have been filled. The packaging is now folded in accordance with illustration 9. In the finished state 10, the packaging is reversibly closed by means of the tab 5 and the edge 6. An additional sealing film 11 can be attached to the triangular side surfaces as a sales seal.

This variant can be made from two (or with sealing film 11 three) types of thermoplastic of the same type of plastic (for example PVC, PET or PP). Such different types of thermoplastic of a type of plastic are well compatible with one another in remelting recycling.

Printing can be applied to both sides of the film surface 1 and additionally also to the push-through film 7.

FIG. 2 shows a variant of the same in production and material technology as that shown in FIG. 1. Constructively, instead of the triangular blister, a blister with round depressions is shown. The finished sales packaging 10 here has the shape of a cuboid. The reference symbols are identical to those from FIG. 1.

FIG. 3 shows a blister packaging which is identical in appearance to the variant shown in FIG Deep-drawing of the blister troughs and the introduction of folded edges 14 integrally welded 15 film 16 serves as a push-through film and for printing additional product information. In this variant, secondary processed material can already be used as the material for the folding box 13.

4a), b), and c) show a variant in which a special push-through film is dispensed with. The intermediate stage 18 with blister recesses 19 and folded edges 20 is formed from a film 17 by thermoforming. After the blister troughs have been filled, they are closed by a fold 21. In a further manufacturing step, the blister formed in this way is welded, the overlap 22 and the closure tab 23 and eyelet 24 are punched out.

FIG. 4b) shows the handling of the variant shown in FIG. 4a) when folding and closing.

FIG. 4c) shows options for handling the variant shown in FIG. 4a) when tablets are removed.

Advantages of the invention:

The blister packs according to the invention are easily recyclable or reusable as thermoplastic single-product products. At the same time, all application advantages of previous blister packaging are retained. In addition, other application advantages, such as the coherent unity of product, product information and outer packaging, are created.

Depending on the variant, the manufacturing technology can also be significantly simplified. If different materials and functional elements still have to be brought together for today's sales packaging with blister packs, the blister packs according to the invention can be produced in one line and in part from a starting semifinished product. A final merging of blister, product information and conversion no packaging.

In the disposal, the blister packs according to the invention can be recorded as largely flat parts and can therefore be returned with little volume. There is a single disposal route (plastic) for the used sales packaging, whereas with conventional blister packaging two (blister and paper / cardboard) or three (plastic, aluminum, paper / cardboard) disposal routes and corresponding sorting are necessary are. Recycled waste material can be recycled in the same application (as a folding box material) for the production of the corresponding variants, which favors collection and recycling systems specific to the product group.

A variety of shapes and functions can be produced as blister packs according to the invention. Thus, the different appearances required for sales packaging of different products can be constructively achieved as blister packs according to the invention.

The blister packs according to the invention for small-sized products can therefore be manufactured more cheaply, can be better used, and can be disposed of more cheaply and technically more easily than conventional packagings for similar products using a wide variety of design variants.

List of reference numbers

1 semi-finished film

2 thermoformed film

3 blister recesses

4 folded edges

5 locking edge, tab 6 locking edge, snap recess

7 push-through foil

8 Welding of the printing foil

9 folding

10 finished sales packaging 11 sales sealing film

12 semi-finished film for blisters

13 semi-finished film for folding box

14 thermoformed semi-finished products

15 Welding of blister, folding box and film for product information

16 film for additional product information and as a printing film

17 semi-finished film

18 thermoformed semi-finished products 19 blister recesses

20 folded edges

21 Pre-folding and welding

22 punched folded edge

23 punched out locking tab 24 punched out locking eyelet

Claims

Claims:

1. Blister packaging with outer packaging made of thermoplastic for small-sized goods, such as tablets, candies, small components and the like, characterized in that all functional elements of the blister packaging, including the outer packaging and possibly foils for additional product information from a thermoplastic or from one another in the thermoplastic Remelting-recycling compatible thermoplastic types are manufactured and are so cohesively combined that a single unit to be disposed results after the end of the service life.

2. Blister pack according to claim 1, characterized in that the blister pack and a folding box as outer packaging is made of a single thermoplastic film, which is obtained after thermoforming and the introduction of folded edges or after a corresponding injection molding so that the goods to be packaged can be filled in and, after the blister has been folded accordingly, sealed by welding and that after a possible punching out of further functional elements such as tabs and eyelets or by using opening or closing edges introduced during thermoforming or injection molding, an overpacking - The blister is formed by folding the film into an open folding box.

3. blister pack according to claim 1, characterized in that individual functional elements, such as the blister, the Outer packaging, a push-through film, a film for printing additional product information and / or a sales sealing film are welded together to form a unit.

4. Blister packaging according to claim 3, so that the push-through film is only partially welded to the blister and / or the folding box and at least one free side of the film is used as a film for printing additional product information.

5. Blister packaging according to claim 3, that a d u r c h g e k e n n z e i c h n e t that individual functional elements are made of secondary processed thermoplastics.