Abstract
A packaging material for packaging a device, particularly a microfluidic device, includes a desiccant container, particularly a desiccant pouch. The desiccant container is fixed in place by melting patches of a material of the packaging material.
Claims
1. A packaging material system for packaging a device comprising: a packaging material; and a desiccant container fixed to the packaging material, wherein the packaging material is melted at isolated points to fix the desiccant container to the packaging material.
2. The packaging material system as claimed in claim 1, wherein: the desiccant container includes a sleeve, and the desiccant container is fixed via penetration of the packaging material at isolated points into the sleeve.
3. The packaging material system as claimed in claim 1, wherein the packaging material comprises composite material.
4. The packaging material system as claimed in claim 1, wherein the packaging material comprises fibers or a fibrous material.
5. The packaging material system as claimed in claim 1, wherein the packaging material has an embossed contour on a side of the melting that faces away from the desiccant container.
6. The packaging material system as claimed in claim 1, wherein: the desiccant container includes a sleeve, and the sleeve comprises a meltable material for fusing to the packaging material to fix the desiccant container to the packaging material.
7. A method for connecting a desiccant container to a packaging material for packaging a device, comprising: positioning the packaging material and the desiccant container in relation to one another; and heating at least one region of the packaging material to melt the packaging material at isolated points to connect the desiccant container to the packaging material.
8. The method as claimed in claim 7, wherein the positioning comprises: arranging the desiccant container at a predefined location with respect to the device prior to the heating.
9. The method as claimed in claim 8, further comprising: exerting a force on the packaging material in a direction of the desiccant container during or after the heating.
10. The method as claimed in claim 9, wherein the heating comprises: heating the at least one region using a contact connection with a heating die.
11. The method as claimed in claim 10, further comprising: sealing an opening of the packaging material jointly with the heating of the at least one region.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Exemplary embodiments of the invention are schematically illustrated in the drawings and explained in more detail in the description hereinbelow. The same reference signs are used for the similarly acting elements illustrated in the various figures, a repeated description of the elements being dispensed with.
[0016] In the drawings:
[0017] FIG. 1 shows an exemplary embodiment of the packaging material according to the invention, and
[0018] FIG. 2 shows a flow chart of an exemplary embodiment of the method according to the invention.
EMBODIMENTS OF THE INVENTION
[0019] FIG. 1 schematically shows one exemplary embodiment of the packaging material 100 according to the invention for packaging a device 200. In this example, the device 200 is a microfluidic device, specifically a cartridge 200 for a lab-on-a-chip system. The packaging material 100 comprises a desiccant container 50, in this example a desiccant pouch 50 filled with desiccant 51, for example silica gel. The desiccant container 50 is fixedly connected to the packaging material 100 by way of melting 110 of a material 120 of the packaging material 100 at isolated points.
[0020] In this example, the packaging material 100 is a pouch 100 of composite material, for example a pouch produced from a composite film with the layer sequence of polyethylene, aluminum, polypropylene. Illustrated in FIG. 1 is that the cartridge 200 is already located in the composite pouch 100 and the opening 101 of the composite pouch 100 is already sealed. The desiccant pouch 50 is also already connected to the pouch 100 by way of the melting 110. In this example, the desiccant pouch 50 comprises a fibrous material, so that it was possible for the molten material 120 to penetrate partially into the sleeve 52 of the desiccant pouch 50 and enclose fibers of the sleeve 52 for a form-fitting connection of the desiccant pouch 50 to the composite pouch 100. By way of example, the desiccant pouch 50 comprises a fibrous substance, cotton wool, a nonwoven material or paper for this purpose. As an alternative or in addition, the sleeve 52 can comprise a meltable material 53 for fusing to the material 120 of the composite pouch 100. As is also schematically illustrated in FIG. 1, the heat required for the melting has been introduced by way of a heating die 300 having an embossed structure 310, and at the same time a contour 130 has been embossed onto the outer side of the composite pouch 100. The contour 130 can code information about the cartridge 200 that is useful for a user of the device 100 and can do so in the form of text or symbols, for example an indication relating to the origin, type and/or usability of the cartridge 200.
[0021] FIG. 2 schematically shows a flow chart of an exemplary embodiment of the method 500 according to the invention, by means of which for example the packaging, illustrated in FIG. 1, of the cartridge 200 can be achieved by the packaging material 100 and connected desiccant container 50. In a first step 501 of the method 500, the desiccant pouch 100 is placed onto a predefined location 210 of the cartridge 200, for example close to the particularly moisture-sensitive front portion 210 of the cartridge. In a second step 502, the cartridge 200 and the desiccant pouch 100 are provided in the composite pouch 100. The first step 501 and the second step 502 can also take place in parallel or in a reverse order. In a third step 503, the opening 101 of the composite pouch 100 is sealed. In a fourth step, the material 110 of the composite pouch 100 that adjoins the desiccant pouch 50 is heated, with the result that the material 110 melts and thus penetrates partially into the sleeve 52 of the desiccant pouch 50 for a form fit with the fibers of the sleeve 52. In this case, the heating takes place by way of a contact connection of the embossed structure 310 of the heating die 300 with the material, with the result that also at the same time the contour 130 is embossed into the composite pouch 100. If a contour 130 is not required, a heating die with a flat die surface can also be used. By way of example, the die is heated to a temperature between 190 and 250 degrees Celsius and for a heat effect duration on the material 110 of 1 to 5 seconds. The duration depends here on the thickness and the material composition of the composite material, such that the material 110 is softened up to that side of the composite pouch 100 which makes contact with the desiccant pouch 50. In this case, the heating die 300 can exert for example a contact pressure of between 1 and 15 newtons. The third step 503 of sealing the composite pouch 100 and the fourth step 504 of heating and embossing can preferably also be carried out at the same time here, in particular when the sealing likewise takes place by way of a partial melting of the material of the composite pouch 100. In a fifth step 505, the composite pouch 100 can be conveyed further after cooling.
