FR2865192A1 - Blister closing unit, has male unit with lip penetrating into hollow part of female unit which has retaining unit with leaf having slot that produces undercut opposing extraction of male unit after its introduction into female unit - Google Patents

Abstract

The unit has a male unit (1) with a lip (5) that penetrates into a hollow part (3) of a female unit (2) which has a retaining unit. The retaining unit has a leaf (A) in which the hollow part is made. A leaf (B) has a slot (21) permitting to access the part (3). An edge (7) is placed partially above the part (3). The slot produces an undercut opposing extraction of the male unit after its introduction into the unit (2).

Description

The present invention relates to a device for connecting between

  they two parts of a set, to create a housing for packaging or over-packaging objects.

  This packaging is intended to protect, transport, and present for sale, various industrial or consumer products. Blister is also called in the professional environment. It is mainly made of plastic or cardboard.

  Modern distribution is increasingly appealing to this type of packaging because it protects against breakage and theft, while enhancing the product thus packaged. It has the disadvantage of being relatively expensive, not by the cost of materials that constitutes it, but rather by the costs of transport and labor it generates.

  Companies specializing in blister packaging perform well when it comes to packaging large series of the same article. On the other hand, for small and medium series, on which it is difficult to obtain reasonable production rates, it often happens that the packaging costs more than the packaged product. This is the case of products to be packaged in multiple quantities, for example, ten nuts. In this case, the cost of labor does not allow for packaging in the normal circuit, and it is necessary to consider other solutions, for example to outsource packaging where labor is cheaper .

  In other cases, products of very high values also pose flight problems, and the manufacturer then wishes to condition itself the product.

  A number of packages currently exist on the market, mainly transparent hinged plastic boxes, which allow the manufacturer to package his own products. He can also, if he wishes, to have conditioned in disabled centers or prisons. These solutions can reduce costs, especially when the series are small or medium. They also offer the advantage of being able to condition the article at the last moment, when it is sure that it is sold. But they also have disadvantages: / They are made by thermoforming, and because of this, can not technically be easily printed in an industrial way.

  / For the safety of the closure it is necessary to weld, glue, or staple the packaging after filling.

  / The presentation is a little old and loses its appeal.

  There is therefore a need for a package for manually performing blister packaging.

  To solve this problem, there is a solution: It consists in producing a closure means by means of a male part provided with a lip which is clipped into a female part in which is formed a hollow part.

  The disadvantage of this known device is that for the clipping to hold, it is necessary that the groove has an undercut, which has two serious disadvantages: -An undercut can be achieved by thermoforming with sophisticated tools and therefore Dear.

  -The undercut produced by thermoforming occupies a large volume, resulting in congestion during storage of the package before use.

  The invention described below provides a new solution, easy to use and a very competitive cost.

  The invention object of this patent is to produce a package consisting of two parts that we call a male piece and female part, which can be joined by a new fastening means.

  The new fastening means of the invention is as follows: The male piece is provided with a lip that can have a hook-shaped cut, intended to penetrate into a recessed portion made in the female part, in order to remain there prisoner through a means of retention.

  To create the retention means, the female part consists mainly of two sheets secured: - A first sheet in which is formed a recessed portion for receiving the male part; A second sheet, glued on the first, having a cutout allowing access to the recessed portion, but leaving an edge coming partly above the recessed portion and producing, inexpensively, an abutment strongly opposing at the extraction of the male part after its introduction into the female part.

  The invention will be better understood with the aid of the following schematic drawings: FIG. 1 represents a sectional view of the package in the closed position.

  Figure 2 shows a perspective view of the package in the closed position.

  Figure 3 shows a perspective view of the male portion (1) of the package with its lip (5) and lip flange (6).

  FIG. 4 represents a perspective view of the female part (2), composed of a sheet (A) in which a recessed part (3) is formed, and a sheet (B) in which a perforation is made comprising an edge (7). The two sheets (A) and (B) being secured in (4).

  Figures 5, 6, 7 and 8 show a sectional view of the package first in the open position, then in the engaged position, to the closed position.

  Figures 9 and 10 show a perspective view of two possible embodiments.

  Figures 11 and 12 show respectively a sectional view in open and closed positions of the package, with the addition of a portion (9) between the male part (1) and the female part (2).

  Figures 13 and 14 show respectively a sectional view in open and closed positions of the package, with the addition of a portion (10) between the male part (1) and the female part (2).

  Figure 15 shows a perspective view of the male part (1), provided with a tongue (11) allowing easy opening of the package.

  FIG. 16 shows in perspective a possible embodiment of the package with easy opening thanks to the tongue (11).

  Fig. 17 shows an exemplary embodiment with the ratings.

  In these figures we see that the package of the invention is composed of two parts: a male part (1) and a female part (2), which can be joined by the following means: The male part (1) is provided with a lip (5) having a hook-shaped cut, intended to penetrate into a recessed portion (3) formed in the female part (2), in order to remain trapped by means of a retention means.

  The female part (2) comprises a lip retention means (5) consisting mainly of two sheets secured to each other: A first sheet (A) in which a recessed portion is provided for receiving the lip (5) male part (1); -A second sheet (B), glued on the first, having a cutout (21) allowing access to the recessed portion (3), but leaving an edge (7) partially above the recessed portion and producing, inexpensively, the effect of an undercut strongly opposing the extraction of the male part after its introduction into the female part.

  It goes without saying that the device can be made with a square, rectangular, oval, etc. Any other geometric or other shape allows the system to function, provided that both male and female parts fit into each other.

  By way of nonlimiting example will be described below with reference to Figures 1 to 8, an embodiment of a package according to the invention wherein the elements intended to fit are circular.

  This device consists of two parts, a male part (1) and a female part (2).

  The male part (1), shown in FIGS. 1 to 8, comprises in its center a disk-shaped flat portion (14) on the periphery of which a lip (5) has been thermoformed.

  The lip (5) is in two parts: a part (15) in the form of a cylinder (or of a truncated cone if it is desired to provide a draft), a base of the cylinder (or the small base of the truncated cone) being secured to the edge of the disc (14).

  a frustoconical portion (16) whose small base is connected to the base of the portion (15) opposite to that connected to the disc (14), the other base of the portion (16), that is to say the large base of the truncated cone (16), forming the edge (6) of the lip (5).

  The female part (2), shown in Figures 1 to 8, is composed of two sheets (A) and (B) of transparent plastic, firmly connected to one another by a bonding (4), for example a heat seal.

  The sheet (A) has at its center a disk-shaped flat portion (17) on the circumference of which a hollow part (3) has been made by thermoforming. The diameter of the disc (17) is less than or equal to the diameter of the disc (14) of the male part (1).

  The recessed portion (3) is in two parts: -a portion (18) in the form of a cylinder (or truncated cone if one wants to spare a body). A base of the cylinder (or the small base of the truncated cone) being secured to the edge of the disc (17).

  a portion (19) in the form of a truncated cone whose small base is connected to the base of the portion (18) opposite to that connected to the disc (17), the other base of the portion (19) being integral with the remainder (20) of the sheet (A) located on the periphery of the recessed portion (3).

  The sheet (B) comprises a cutout forming a circular opening (21) whose edge (7) forms a circle of diameter greater than the diameter of the disk (17) and smaller than that of the large base of the truncated cone (19).

  The sheet (B) is then placed on the sheet (A) so that all the circular parts are concentric, then the two sheets are secured for example by a circular bonding line (4) located at the point of contact between the sheet (B) and the portion (20) of the sheet (A), near the large base of the truncated cone (19).

  It can be seen that between the edge of the disk (17) and the edge (7) there remains a space intended to allow the passage of the lip (5) for its introduction into the recessed portion (3).

  It is also seen that the edge (7) of the sheet (B) is overhanging above the recessed portion (3), creating a retention means for the male part (5), provided that the diameter of the formed circle by the edge (6) of the lip (5) of the male part (1), which is slightly larger than the diameter of the circle formed by the edge (7) of the cutout (21) made in the sheet (B). ) of the female assembly (2).

  It is also necessary that the lip (5) of the male part (1) is sufficiently flexible, to retract slightly to allow its passage in the free space between the edge of the disk (17) and the edge (7) Figures 6 and 7 provide a good understanding of the operation. In FIG. 7, the lip (6) can be retracted in contact with the edge (7) of the sheet (B) as the lip (5) is introduced into the recessed portion (3). ). The depth of the part (3), that is to say the distance between the top of the sheet (B) and the bottom (8) of the part (3), (see Figure 1), must be sufficient to allow at the lip (5), during the introduction, to escape and no longer be in contact with the edge (7) of the cut of the sheet (B). The diameter of the circle formed by the edge (6) of the lip (5) of the male part (1), by its elasticity, then returns to its original dimension, that is to say that it then takes up a greater dimension the diameter of the edge (7) of the circular opening (21) of the sheet (B), which provides a retention which prevents the extraction of the lip (5) of the recessed portion (3). Indeed, the reverse movement of the previous, which tends to bring out the lip (5) of the recessed portion (3), would cause the edge (6) of the lip (6) abutting against the underside of the sheet (B ).

  Depending on the purpose, the dimensions of the different diameters of the circular parts may vary in different ratios.

  For example if we want a loose hold we will leave a space between the parts (18) and (15) so that the latter, thanks to its flexibility, under the effect of traction can reduce its diameter and allow the portion (16) to escape retention.

  On the other hand, if one wants a very firm hold of the fitting, the diameters will be calculated so that the part (15) bears on the part (18), in order to prevent it from reducing its diameter despite its flexibility. We can also support the maintenance by calculating the dimensions so that under the effect of traction, the edge (6) of the lip (5) abuts the bottom of the cavity (22) near the point of welding leaves (A) and (B).

  In the above description, for ease of exposition and understanding, it has been said that certain parts are flat, notably the discs (14) and (17), but it is understood that these parts may, in certain variants, comprise reliefs, so as to spare volumes intended to contain the packaged objects.

  The transparent plastic can be replaced by any other material, for example cardboard.

  In the above example, the sectional junction between the portion (15) and the portion (16) represents a sharp angle. But, to facilitate the positioning and the introduction of the lip (5) in the female part, another form can be adopted, for example, this connection may have a more flattened shape (see Fig.17).

  This assembly of the male part (1) with the female part (2) makes it possible to produce a container called packaging. Figures 9 and 10 show two forms of packaging that can be made. It goes without saying that a multitude of shapes and dimensions can be envisaged on this principle.

  According to the adjustments made between the two male and female parts, depending on the materials and their thickness, it is possible to produce packages that open more or less easily, or even impossible to open manually. In Figures 15 and 16, we can see the male part (1) whose lip (5) has an edge (11), to facilitate opening. One can easily understand the interest of this system easy to manufacture without additional cost. The customer can easily open its packaging, and it can also close it, either to keep the item packed, or to return to the super market, in case it 'article does not suit him.

  According to another embodiment shown in the open position in FIG. 11 and closed in FIG. 12, it is possible to add a third part (9) between the male part (1) and the female part (2). To do this, it is necessary to provide a cutting of the sheet (B) of the part (2) having the shape and the dimension of the part (9). Figure 12 shows the assembly in closed position, with the portion (9) blocked between (1) and (2).

  According to other forms of non-drawn embodiments, the cut can be made not on the female part (2), but on the male part (1). It is also possible to make a cut on (1) and (2), which allows to insert two parts between (1) and (2), to obtain a larger packaging volume.

  According to another embodiment, shown in FIG. 13 in the open position and FIG. 14 in the closed position, the part (10), inserted between the male part (1) and the female part (2), is a complete package. . In this case, one can imagine that the part (10) is an integral part of the object presented for sale in the packaging.

  the user of the product thus conditioned will keep the part (10) for a better comfort of use. We understand better with the following example: Paper clips are sold with their box, which allows a good storage, classification and storage.

  This packaging can be made of various materials such as plastics, cardboard, as well as the combination of the two materials. Each part being independent, the plastics may be of different natures.

  Various manufacturing techniques can be envisaged. Thermoforming is quite suitable for the realization of this packaging. The binding of the sheets (A) and (B) represented by (4) can be obtained by bonding, thermal welding, high frequency welding or ultrasonic welding. All known techniques to date, can be used to obtain the cuts (5) and (6).

  Preferably, the thermoforming, combined with the high frequency welding and cutting with cutting thread tool seem most suitable for the realization of this product.

  The sheet (B) of the part (2), being flat, can easily be printed, offset, screen printing, gravure or hot stamping. It is also possible to incorporate a printed portion between the sheets (A) and (B) during manufacture, before welding. One can also insert a document between (1) and (2), during the nesting of (1) and (2).

  By way of example will now be described an example of packaging according to the invention for CD rom (Figure 17).

  Crystal rigid PVC sheets with a thickness of 350 microns are used.

  In a foil (B), a circular groove with an internal diameter of 118 mm and an outside diameter of 132 mm and a depth of 7 mm is produced by thermoforming and having approximately the profile shown in FIG. .l.

  In a sheet (A) is made by cutting a circular opening with a diameter of 126 millimeters between the two diameters of the groove of the sheet (B).

  The sheet (A) is placed on the sheet (B) so that the circles are coaxial, and the two sheets are secured by a coaxial circular weld (4). This gives the female part (2).

  In a third sheet is cut and thermoformed the male part (1), circular, with a diameter of 130 mm, a lip height of 4 mm on the outside and 8 20 mm inside.

  The sheets A AND B are made of circular high frequency solder 134 mm in diameter and 2 mm wide. An advantage of the invention is that the storage is greatly facilitated by the fact that as long as they are not assembled, the elements which compose the packaging according to the invention can be stacked, recessed into each other, which reduces the size to the thickness of the sheet that composes them.

  This is a considerable advantage because it is possible to work during off-peak periods to pre-manufacture the packaging and store it, without cluttering the 30 workshops.

Claims (1)

9 CLAIMS   1. Means for closing a package consisting of two parts: a male part (1) and a female part (2), which can be joined by means of a lip (5) of the male part (1) penetrating into a part hollow (3) made in the female part (2), in order to be held prisoner by a retention means, characterized in that the retention means consists mainly of two sheets secured together: A first sheet (A) in which is formed a recessed portion for receiving the lip (5) of the male part (1); A second sheet (B), glued on the first, having a cutout (21) allowing access to the recessed portion (3), but leaving an edge (7) partially above the recessed portion and producing , creating a stop opposing the extraction of the male part after its introduction into the female part.   2. Means for closing a package according to claim 1 characterized in that the lip (5) has a hook-shaped section.   3. means for closing a package according to claim 1 or 2 characterized in that the male part (1) comprises in its center a disk-shaped flat portion (14) on the periphery of which has been practiced by thermoforming a lip (5) composed of two parts: -a part (15) in the form of a cylinder (or truncated cone if one wants to spare a body), a base of the cylinder (or the small base of the truncated cone) being integral from the edge of the disc (14).   a frustoconical portion (16) whose small base is connected to the base of the portion (15) opposite to that connected to the disc (14), the other base of the portion (16), that is to say the large base of the truncated cone (16), forming the edge (6) of the lip (5).   And that the female part (2) is composed of two sheets (A) and (B) transparent plastic, firmly connected to one another by a bond (4).   The sheet (A) having at its center a disk-shaped flat portion (17) on the circumference of which a hollow part (3) has been made by thermoforming, the diameter of the disc (17) being less than or equal to the diameter the disc (14) of the male part (1).   The recessed portion (3) being in two parts: -a portion (18) in the form of a cylinder (or truncated cone if one wants to spare a body). A base of the cylinder (or the small base of the truncated cone) being secured to the edge of the disc (17).   a portion (19) in the form of a truncated cone whose small base is connected to the base of the portion (18) opposite to that connected to the disc (17), the other base of the portion (19) being integral with the remainder (20) of the sheet (A) located on the periphery of the recessed portion (3).   The sheet (B) having a cutout forming a circular opening (21) whose edge (7) forms a circle of diameter greater than the diameter of the disk (17) and smaller than that of the large base of the truncated cone (19).   The sheet (B) being placed on the sheet (A) so that all the circular parts are concentric, then the two sheets being secured by a circular gluing line (4) located at the point of contact between the sheet (B). ) and the portion (20) of the sheet (A), near the large base of the truncated cone (19).   3. means for closing a package according to claims 1 and 2 characterized in that the diameter of the edge (6) of the lip (5) of the male part (1) is of greater dimension than the diameter of the orifice delimited by the edge (7) of the female part (2).   4. Device according to claims 1,2 and 3, characterized in that the lip (5), at the time of its introduction the female part, retracts in contact with the edge (7), thus reducing sufficiently the diameter of the edge (6). ) of the lip (5), to allow its passage through the orifice defined by the edge (7).   5.Dispositif according to claims 1,2, 3 or 4, characterized in that the male part (1) can engage sufficiently in translation in the female part (2), so that the end (6) the lip (5) is no longer in contact with the orifice (7) of the sheet (B).   6.Dispositif according to any one dgs preceding claims, characterized in that thanks to its elasticity, the lip (5) resumes its initial position after introduction of the male part (1) in the female part (2).   7.Device according to any one of the preceding claims, characterized in that, after sufficient introduction of the male part (1) in the female part (2), the lip (5), after having returned to its original shape, allows the stopping in translation, while abutting on the sheet (B).   8.Dispositif according to any one of the preceding claims, characterized in that a portion (9) can be inserted between the male part (1) and the female part (2).   9.Device according to any one of the preceding claims, characterized in that the part (3) can be printed.   10. Device according to any one of the preceding claims, characterized in that one can realize a tongue (11) on the male part (1), intended to facilitate opening.