Method For Applying A Film Onto A Body

Abstract

The present invention relates to a method of applying a film to a body. In this respect, a film is first applied to and positioned at a transfer mold and the body to be film coated is introduced into the transfer mold to which the film to be attached is applied or the transfer mold to which the film to be attached is applied is introduced into the body to be film coated so that the film is located between the body and the transfer mold. In the further course, a vacuum is applied in a region between the body and the film and/or an excess pressure is applied in a region between the transfer mold and the film so that the film moves from the transfer mold onto the body. A particularly simple method that is fast to be carried out is thereby provided for applying a film to a surface.

Claims

1. A method of applying a film to a body, characterized in that the method comprises the steps: applying and positioning a film to and at a transfer mold; introducing the body to be film coated into the transfer mold at which the film to be attached is applied or introducing the transfer mold to which the film to be attached is applied into the body to be film coated so that the film is located between the body and the transfer mold; and application of a vacuum in a region between the body and the film and/or application of an excess pressure in a region between the transfer mold and the film so that the film moves from the transfer mold to the body.

2. A method in accordance with claim 1, wherein a vacuum is formed between the film and the transfer mold for applying and positioning the film to and at the transfer mold.

3. A method in accordance with claim 1, wherein, the body to be film coated is partly or completely provided with an adhesive layer at its surfaces to be film coated before a transfer of the film to the body and/or the side of the film contacting the body is partly or completely provided with an adhesive layer at its surfaces applied to the body before a transfer of the film to the body.

4. A method in accordance with claim 1, wherein the transfer mold has at a surface of the body to be film coated that has an elevated portion and/or a recess, a recess contrary thereto; and wherein the body is oriented with respect to the transfer mold before a transfer of the film to the body such that respective corresponding pairs of an elevated portion and/or recess of the body and a recess of the transfer mold are aligned with one another.

5. A method in accordance with claim 1, wherein the film for application to the body has a bag-shaped base structure.

6. A method in accordance with claim 1, wherein the film for application to the body is larger than the surfaces of the body to be film coated.

7. A method in accordance with claim 1, wherein the transfer mold can completely receive the body to be film coated in an opening or the body to be film coated can completely receive the transfer mold in an opening.

8. A method in accordance with claim 1, wherein the body to be film coated is the inner container of a heat-insulated receptacle.

9. A vacuum insulation body having a film that has been attached to the body to be film coated in accordance with the method of claim 1.

10. A vacuum insulation body in accordance with claim 9, comprising: a bulk powder as a core material that is covered by the film in a diffusion-tight manner, wherein the film has folds projecting in the direction of the core material.

11. A heat insulated receptacle having at least one carcass and having at least one temperature controlled inner space which is surrounded by the carcass, as well as having at least one closure element by means of which the temperature-controlled inner space is closable, wherein at least one intermediate space is present between the temperature-controlled inner space and the outer wall of the receptacle or of the unit, characterized in that at least one vacuum insulation body having a film is present in the intermediate space; and/or in that at least one vacuum insulation body having an evacuated region surrounded by a film and filled with core material is arranged in the intermediate space, with at least one section of the film having been applied to the inner container of the receptacle or of the unit as part of a method in accordance with claim 8.

12. The method of claim 5 where the film is a high barrier film.

13. The vacuum insulation body of claim 9 wherein said film is a high barrier film.

14. The heat insulated receptacle of claim 11, wherein said temperature controlled inner space is a refrigerated inner space.

Description

[0046] Further details of the invention will be explained with reference to drawings described in detail in the following. There are shown:

[0047] FIG. 1: a sectional view of a transform mold which a film contacts and into which a body to be film coated is introduced;

[0048] FIG. 2: the procedure of a film transfer in the region of a recess of the body to be film coated; and

[0049] FIG. 3: the result of an application of a film to a body in accordance with a conventional method.

[0050] FIG. 3 shows the result of a method of applying a film to a body in accordance with the prior art. In this respect, a film is pulled over a body provided with adhesive and a vacuum is generated between the film and the body for applying the film. Since the adhesive on the body no longer permits a dislocation of the film after a contact with the film, regions form in recesses 22 of the body (concave contours) in which the film is not completely in contact with the body. Tautened regions 12 of the film are rather formed that result in the region of recesses 22 (concave contours) of the body. Since the total surface of the film to be applied to the body has, however, typically been dimensioned as sufficiently large to cover all the surfaces of the body, a material excess is produced due to the tautened surfaces 12 of the film that is expressed in the formation of film folds 11. Tautened surfaces 12 of the film are additionally also typically formed in the vicinity of elevated portions 21 (convex contours) of the body.

[0051] Since these tautened surfaces 12 and the film folds 11 represent an obstacle to the further processing of a body provided with film and are additionally very prone to damage, tautened surfaces of the film should generally be avoided. In this respect, special attention is placed on the tautened surfaces 12 of the film since they are very specifically prone to damage of the film on a small force application.

[0052] FIG. 1 shows a transfer mold 3 to which a film 1 has been applied. A body 2 has furthermore been introduced into the transfer mold 3 so that a film 1 is arranged between the body 2 and the transfer mold 3. A recess (concave contour) of the body 2 and a cutout 4 corresponding thereto in the transfer mold 3 can furthermore be recognized that is oriented opposite the recess 5 of the body 2. It can also be recognized that the film is also present in a part of this cut-out 4 of the transfer mold 3.

[0053] The film 1 is typically applied to the transfer mold by applying a vacuum between the region of the film 1 and the transfer mold 3. It is thus ensured that a body 2 provided with an adhesive, for example, does not come into contact with the film in an unwanted manner. As long as a sufficient distance from the transfer mold 3 is observed.

[0054] FIG. 2 shows a transfer of the film 1 from the transfer mold 3 to the body 2.

[0055] The film 1 is still applied to the transfer mold 3 in the left of the three illustrations of FIG. 2. The center representation shows a state of the film in which the latter has not yet completely come into contact with all the surfaces of the body 2. In this condition, however, a pressure difference between the regions of the film and the transfer mold 3 and the film 1 and the body 2 has already been applied such that the film 1 peels off the transfer mold 3 and moves in the direction of the body 2. An excess film provided in a cut-out 4 of the transfer mold 3 is being applied in the direction of the recess (concave contour) 5 of the body 2.

[0056] The result of the method in accordance with the invention can be seen in the right illustration of FIG. 2 in which no surfaces tautened by the film are present in a recess (concave contour) 5 of the body 2. The film 1 rather completely contacts all the surfaces formed by the body 2.