FI107136B - Foil - Google Patents

Abstract

In a foil (film, sheet) having at least two surfaces which are essentially plane-parallel to one another, at least one of the surfaces is provided with a metal layer. On its metallic surface, the metal layer is covered over the entire area by a layer which adheres strongly thereto. The protective layer is formed by an organic product which adheres strongly to the metallic surface. The organic product can be in the form of a synthetic resin having a molecular weight of greater than 10,000 kp. The synthetic resin may be in the form of a coating resin. The organic product may alternatively be in the form of a synthetic wax having a molecular weight of less than 10,000 kp. The wax does not smear (lubricate). The organic product may be in the form of a natural resin. It comprises rubber. The organic product may be in the form of a natural wax. The natural wax does not smear (lubricate). The organic product is in the form of a print primer which simplifies printing of the metallic surface. It may also be in the form of a mixture of synthetic resin and natural resin and/or in the form of a mixture of resin and wax. The protective layer can comprise a lubricating substance mixed with a synthetic resin and/or a lubricating substance mixed with a natural resin. <IMAGE>

Description

107136

Film. - Folie.

The invention relates to a film according to the preamble of claim 1 and to a method according to the preamble of claim 19.

These types of films are widely used in the packaging industry. These films make it possible to present the packaged product to the consumer in demanding 10 packages. In addition, the cost of vapor deposited films with a metal layer is much lower with respect to metallic aluminum films, both in manufacture and in their further processing. Thus, the metal-vaporized surfaces of the films can be varnished at low cost.

Especially all types of food, but also cosmetic items must be packed vapors oxygen-tight. For this purpose, until now, the plastic films are laminated together with the aluminum layer. The other films are coated with polyvinylidene chloride dispersion. The methods known in this context are very expensive and less environmentally friendly. . SIA. Manufactured products are very expensive. Finally, these metallized '· 1' 25 films, which are otherwise used in large quantities, have the decisive disadvantage that they are very permeable to gas in very varying amounts. In particular * · ”· interferes with their oxygen and vapor permeability.

• · «V J To date, over 30 studies have been carried out to eliminate them, but they have not yielded the same results to achieve this. membrane t · 1 gas impermeability.

The starting point of the invention is the statement that '; a roll is formed on the metalized layer on the film. 35 currently with sliding loads. Within the reel 2 107136 produced by the winding, the individual winding layers move relative to one another. These types of transitions are, on average, probably only a few millimeter-tens of millimeters depending on the draft applied to the film to be rolled, which measures the metallized surface of one layer relative to the non-metallized surface of the adjacent layer. This results in micro-fine damage to the metallized surface which is hardly detectable due to the low displacement. However, these micro-fine damages are sufficient to influence the gas impermeability of the metal layer. It will be more permeable to varying degrees of permeability, in particular, however, considerable amounts of water vapor and oxygen. However, their details have not yet been investigated. However, the abrasion of the individual metal parts depends to a large extent on the particular roll parameters used and also on the tensile stress on the film web, the roll thickness, the back surface roughness of the film rubbing on the metal surface, etc., but also the vacuum metalization temperature and roll speed used. In addition, metal surfaces may be damaged during subsequent treatment, such as when being rolled off, when cutting film V '25 and also when the film is pressed. However, studies have not yet confirmed the supposed dependence of gas density on the film thickness of the vapor deposited metal layer.

• · «::: Recently, however, good experience has been gained with the vapor deposition on the metal layer: ***: Sliding film. It has been able to influence the solver. to prevent damage to the vapor-coated metal layer if this sliding film is applied to the film before the metal-vaporized film is rolled. However, certain problems with h 107136 3 arise in this way in the further treatment of the metal vapor deposited film, because then problems of sizing arise when the slide 5 is vaporized on the surface of the film. The thickness of this sliding film is very difficult to adjust within the desired range. The protective effect of the sliding film is quite good, but often the sliding film produces vapor deposition coatings which may cause difficulties in the intended use of the film with 10 layers of metal. In particular, thick sliding film layers lead to durability problems if the metal surfaces protected by the sliding film are printed, laminated or simultaneously extruded.

Therefore, in many cases, the use of single readers has been abandoned because they limit the usability of the film thus protected. It is difficult to control the vapor deposition process by which the slide is applied. The sliding film layer for vapor deposition coatings-20 must not be too thick as it may come off the metallic surface when exceeding a certain layer thickness.

. . It is an object of the present invention to improve a film of the type mentioned above so that it is easily, safely and expediently available and widely available.

The object is achieved by a film according to claim 1 and by a method according to claim 19.

30 The metal layer so coated has the great advantage that the metal layer coated · · ·. . ***. abrasion can be avoided in subsequent treatments.

·, In this way the metal layer also remains gas tight after completion of the 107136 4 molding, whereby it is impermeable to oxygen and water vapor. The thickness of the vapor-coated protective layer layer can be controlled to the desired extent, and including the greater tolerances of the layer thickness 5, there is no fear of release of the protective layer or restrictions on its further shaping. The metal layer, which is subsequently protected against abrasion, retains its gas tightness, as it avoids the surface microporous thinning of the metal layer, which would thereby become permeable to gas. The protective layer adhered to the metal surface is capable of receiving all the movements of the individual layers of the metallized film which are rolled into a single roll. Thus, movements in the form of abrasions cannot affect the metal surface. Conversely, on one hand, the stresses on the reel may very well equalize because the individual layers slide over the respective adjacent protective layer, and on the other hand, the protective layer is adhered firmly to the metal layer to be protected without worrying about release. Therefore, the protective layer can be applied very thin, thereby only increasing insignificantly the weight of the film, being inexpensive and having a less susceptible surface to abrasion. The protective layer can be applied inexpensively and expeditiously, and expediently just after the evaporation coating of the "" I metal layer.

• · ... Continuous monitoring is not required when vapor deposition is applied to the metal layer.

According to a preferred embodiment of the invention, '' a protective layer is formed of an organic product which adheres firmly to the metal surface. These organic products have a high affinity for the metal surface, whereby they adhere firmly to it. In addition, organic products are generally inexpensive in price and can be thinly applied to a metal surface without the need for effective control of the vapor deposition event. The products adhere uniformly to the metal surface, thereby providing a valuable and protective cover to the metal surface 5.

According to another preferred embodiment of the invention, the organic product may be a synthetic resin or a natural resin. On the other hand, artificial or natural waxes with a molecular weight of less than 10,000 can also be selected as organic products. It is also conceivable to make mixtures of artificial and natural resins or artificial and natural waxes, or also mixtures of resins and waxes, and then to coat the metal layer with them. The selection can then be made according to a number of criteria, for example, according to the intended use of the film with a protective layer, or also according to the desired quality of further processing. Thus, in many cases, the applied protective layer must be printable, in other cases, it must be coated with the extrudable material.

Crucially, the organic product used to make the protective layer forms a layer having a high affinity for the metal surface, whereby it is adhered to it tightly. As the vapor of the organic product 25 condenses on the metal surface, uniform adhesion must be generated.

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In addition to the foregoing, it is possible, according to another embodiment of the invention, to incorporate either an artificial or natural resin, or an artificial or natural wax, or a mixture of waxes and resins with the addition of a lubricant. "" · In this way, the lubricant binds to the constituents of the organic material, thereby improving the sliding of the adjacent layers relative to one another, while not promoting the unpleasant side effects, such as caking, occurring in the exclusive application of a lubricant to the Lu layer. , synthetic resins, natural waxes and synthetic waxes and / or various organic substances, lubricants can be applied very well to the metal surface, and dispensing of this type of mixture is of course possible. The lubricant of the overcoated protective layer is further improved by the lubricant and without the pressure exerted on it. due to.

According to another very important embodiment of the invention, the protective layer has a protective function against corrosion occurring in the metal layer. A corresponding selection of natural resins, synthetic resins, artificial or natural waxes and / or their constituents results in a protective layer suitable for protecting the metal layer against corrosion. Studies have shown that corrosion in the metal layer can cause cataract permeability. Experiments have shown that with suitably selected resins, which are deposited on the metal layer by evaporation, corrosion can be avoided by almost 20 completely. Anti-corrosion properties of this type are also present in compositions containing a lubricant mixed with natural resins, artificial resins, artificial or natural waxes and / or some or all of these. mixtures of organic substances.

A: Another preferred embodiment of the invention *: * is that the protective layer is well suited as a primer for the metal surface when the film is printed graphically, and when the corresponding organic substances have been selected accordingly.

Natural and artificial resins, natural and artificial waxes and / or natural resins are suitable for the preparation of a good primer. mixtures of all or some of these components.

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Mixtures of these organic products, when mixed with such lubricants, are also conceivable as a primer. The corresponding selection of the protective layer ·; · 35 has the advantage that, when used,> »· 7 107136 can be dispensed with the additional priming of the film for graphic printing, which would be done just prior to the graphic printing.

In addition, organic products normally have the advantage that they are inexpensive and can be applied to a desired thin metal surface. They evenly seal to the metal surface and therefore provide a comprehensive and valuable shield to the metal surface, even when applied as a single thin protective layer.

According to another preferred embodiment of the invention, in a method of producing a protective layer on a metal layer on at least one surface of the film, a metal layer is provided with a protective film that adheres firmly to the opposed metal surface of the metal layer film. In this way, a protective layer is adhered to the surface to be protected, which can withstand even heavy loads. The solid bonding of the shielding layer to the metal layer shifts the mechanical loads that affect the individual layers of the roll to the very resistant shielding layer, whereby the metal layer is adequately and resistant to shielding.

According to another preferred embodiment of the invention, the organic layer is vapor deposited on the metal surface. This organic layer has the advantage that it can be prepared from very inexpensive starting materials and can be applied to the metal surface with a high degree of as a smooth, stable layer and adhering to it, it also has the necessary strength and toughness to achieve high wear resistance.

According to another preferred embodiment of the invention, the organic layer can be applied with a synthetic resin layer. In addition, the organic layer can also be made of natural resin, which has very good properties for use in the food industry and has the necessary elasticity and durability. In addition to these, the organic layer can be made from either 5 artificial or natural waxes, or a mixture of both, or a mixture of resins and waxes.

According to another preferred embodiment of the invention, the organic layer is applied to the metal surface immediately after the vapor deposition of the metal layer before the film coated with the metal layer is rolled up. In this way, it is ensured that the protective layer is applied to the metal layer before it is subjected to any mechanical stress, in particular abrasion. Only after the protective layer has been applied is the film having a protective layer protecting the metal surface rolled up, so that neither can the roller cause mechanical stresses in the form of scratches or abrasions on the metal surface. Before the metal layer may be damaged by abrasion, the protective layer is already protective of the metal layer and can thus protect the applied metal layer from mechanical stress. The protective layer forms an integral with the metal layer. a unit which, on the other hand, is very durable and effective. "* 25 is very gas-tight. It can be vaporized in one or more time periods *: * in succession in a single event, •» * · ·; ·· * and following each other , depending on the material to be evaporated, at a greater or less ai-30 intervals.

According to another preferred embodiment of the invention ..., the range of organic products may vary depending on the · · ♦ *. whether it consists of natural or artificial resins, natural or artificial waxes or mixtures of some or all of the components; ·; · *: 35, whether or not they contain a lubricant as an additional compounding component, spreads on the surface of the metal layer, that they are suitable as a primer for printing on the metal side of the film. By selection of the corresponding resins, waxes or lubricants, the film priming prior to printing on its metal-coated surface can be dispensed with. In addition, it is contemplated that any lubricant-mixed organic products will be applied such that they are suitable not only for a protective layer against abrasion of the metal layer, but also for corrosion protection of the metal layer.

According to another preferred embodiment of the invention, the organic layer is immediately deposited on the metal 15 layer by at least one uniformly heated evaporator in the evaporation coating device, to which the organic material to be vaporized is fed at the same rate as the deposition coating. By evaporation coating, a protective layer of the desired thickness is applied over the metal layer to be protected. In this case, the feed rate of the organic material to be vaporized is adjusted to the rate of vapor deposition at which the 25 metal layer is applied to the surface of the support. In this way, the protective layer can always be kept uniform.

...: * Further details of the invention will be apparent from the following detailed description and from the accompanying drawings, which illustrate by way of example an embodiment of the invention, in which: Figure 1 is a cross-sectional view of a metallized film on which a protective layer is applied,. * * * • Figure 2 shows a cross-section at an enlarged view. *: 35 of 10 metal layers with protective layer shown in the form of "10", 10 shows an enlarged cross-section of a metal layer coated with a protective layer, printed, 5 Figure 4 shows an enlarged section of a metal layer coated with a protective layer, Fig. 5 is a partial cross-sectional view of two contiguous layers of a rolled roll; a generous, vapor-coating film.

The film essentially consists of a carrier layer 1, a metal layer 2 and a protective layer 3. The metal layer 2 is firmly adhered to the carrier 1 on which it is vaporized or otherwise applied. The protective layer 3 is applied to the opposite surface 6 of the metal layer 2 of the carrier 1 to which it is firmly adhered. The protective layer 3 can be formed! V produces one organic product. This organic product may be formed into a synthetic resin, especially a lacquer. However, natural resin may also be used as an organic product. In particular, it is thought that rubber is used as an organic product. In addition, mixtures of artificial resins and • · · 30 natural resins are suitable as a protective layer.

. It is particularly important that the protective layer 3 • · ... is applied over the metal layer 2 at such a time that it is still completely scratch-resistant. For this purpose, a protective layer 3 is applied over the metal layer 2 immediately after this 107136 has been evaporated on the carrier 1. The application of the protective layer 3 is conveniently effected by vapor deposition coating. In this respect, it must be taken into account with respect to the amount of evaporation-coated that the protective layer 3 does not become too thick. Evaporative coating ensures that the protective layer is applied with a uniform thickness over the entire metal layer 2. In addition, it is thus ensured that the sealing layer 2 has a high seal. This is sufficient to provide the metal layer 2 with protection not only against scratching and abrasion, but also to maintain the gas tightness of the metal layer 2. The undamaged metal layer 2 already has sufficient gas tightness to the packaging, and furthermore, the very tight protective layer 3 applied not only maintains it by providing an abrasion protection, but also enhances it by the high sealing layer 3. In this way, the metal layer 2 forms a very gas-tight combination with the protective layer 3, which is particularly oxygen-tight and water-vapor-tight.

20 Further, the protective layer 3 has very high mechanical strength. It is made of a material of sufficient strength so that the overcoated protective layer 3 remains impermeable, even at high pressures, which causes the protective layer 3 to become non-sticky with it. with the second layer under load.

• · · ••• j It is very important for the quality of the whole product that • the organic * 1 organic product intended to form the protective layer 3 is evaporated at a temperature that • 14 · 30 does not affect the quality of the overall material. In this sense, the vaporization of the compound in question. organic product at normal temperature ·; ··: 100 ° - 150 °. The organic product used <"1: the vapor condenses on the protective layer 3 to be coated. to the surface of the metal layer 2. The organic product forms *; 35 regardless of the number of layers to be applied

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14 1 «·« 107136 12 a gas-tight combination which is also impervious to oxygen and water vapor permeability.

In addition, by the proper selection of an organic product, which may consist of natural resin 5 or synthetic resin or also natural wax or artificial wax or a mixture of natural resin and artificial resin or also resin and wax mixture, the resulting protective layer 3 protects the metal layer 2. also against the corrosion of the iX-10. As is evident from scientific studies, gas vapor deposition of metal vapor deposited films also results in gas permeability due to corrosion. The correct choice of organic products to form the protective layer 3 prevents these corrosion.

The separation between resins and waxes is normally based on the fact that resins are organic products with a molecular weight above 10,000, whereas waxes have a molecular weight below that limit. In the blend of resins 20 and waxes, as the molecular weight increases, the applied protective layer 3, 39 increases the mechanical resistance of the coating and the waxes increase its flexibility. Otherwise, when selecting resins and waxes, as well as when selecting the ingredients for natural resins or waxes, and for the choice of constituents of artificial resins or waxes, · the expected use of the film to be manufactured, e.g. it must be impervious to vapors, especially when considering environmental conditions.

• · · * · * * In addition, a lubricant may be added to the organic product used to form the respective protective layer 3, the products being natural resin,

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V * synthetic resin or natural wax or artificial wax and / or a mixture of synthetic resin and natural resin or natural wax «tl • · 35 and artificial wax, and also resins and waxes.

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107136 13 issues. This addition of lubricant increases the sliding ability of the resulting protective layer 3 with respect to the load placed against it, e.g., the adjacent film layer on the roll. In the combination of the lubricant and the respective organic product 5 used, the mixture of this and the slip agent can be applied to the metal layer 2 at a predetermined strength. There is no risk of the release layer 3 of this mixture from the metal liqueur 2. In addition, the protective layer 3 of this type can also be further modified, for example, by graphic printing, lamination or extrusion of material.

Further, the protective layer 3 is suitable as a corrosion protection material 15 for the material forming the metal layer 2. By suitable selection of the organic product which forms the protective layer 3, the metal layer 2 is permanently protected against corrosion. Hereby, the corrosion protection can be adapted to the respective loads 20 of the corrosive agents to which the metal-coated film is exposed. Regardless of whether natural resins, synthetic resins and / or mixtures of both and / or natural waxes and / or mixtures of both waxes and / or resins and / or mixtures of resins and / or resins are used to form the protective layer 3, they can be selected by: to prevent corrosion. This corrosion protection is also formed when lubricants are added to natural resins, «·· ·· **, artificial resins, natural waxes and artificial waxes and / or» ·· ♦ ·.

···. · · * V * 30 In order to uniformly coat the metal layer 2 with the protective layer 3, it is important that it has a good affinity for the metal of the metal layer 2 in the organic state of the gas product. Thus, a metal deposit occurs. good bond between the protective layer • i · 'I 35 3 and the metal layer 2 over the whole surface of the layer 2. In the vapor phase condensation (• • «« «I« • * *

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4 I I »I • 4 107136 14 protective layer 3 evenly on metal surface.

When selecting a product, it may be noted that it can be printed using standard printing methods once it has been applied as a protective layer. For this purpose, a variety of natural resins, artificial resins, and / or mixtures of both, natural and artificial waxes and / or mixtures of both waxes and resins, to which lubricants may always be added, are used to form the protective layer 3, suitable as a primer formed by the resulting protective layer 3. This priming is a good basis for performing graphic printing, whereby the special priming of the metallized side of the film can be dispensed with just before printing. In addition, the protective layer 3 thus formed may, when the correct mixing components have been selected, act as an adhesion enhancer for any layer extruded thereon. This type of extrusion attachment improvement is achieved, in particular, by the use of small molar-20 waxy olefins.

Further, the protective layer 3, the opposite surface of its metal layer 2, can be well laminated, so that the adhesive and other solvents can be well applied to this protective layer 3, on the opposite surface of its metal layer 2. Finally, in many cases, it is necessary that the protective layer 3 can be coated on it. • · · · ....: material extruded from the opposite surface of the stable layer 2. The surface must have properties such that it leads to good crystallization of the extruded material over the metal layer 2. Then form. polyethylene and polypropylene provide good adhesive substrates for the polyolefin extrusion process.

• · · '· *' Finally, the protective layer 3 must be: * ·. · A substance which is physiologically sound and which · · ·; 35 eliminates health hazards, even when food is wrapped in metallic film. For the same reason, the protective layer 3 must also be odorless.

The carrier may be polypropylene or polyethylene. However, polyester, polyamide or polystyrene can also be used as carrier 1 for use with Telia. Polyvinyl chloride can also be thought of as a carrier.

The organic product 22, which may be a natural resin, a synthetic resin and / or a mixture of both, artificial wax, 10 natural waxes and / or a mixture of both resins and waxes, as well as the substance obtained by adding a lubricant to the selected component, is conveniently evaporated from the melt. 23 produced in the evaporator 19. For this purpose, the evaporator 19 has a slot 24 which opens from the melt 23 in the direction of the metal layer 2 to be evaporated. The metal layer 2 is conveyed inside the evaporator coating device 9 above the evaporator 9, above the gap 24.

The vapors 21 rising from the resin melt 23 rise upwardly into the slot 24, pass through the slot 24 in the direction of the metal layer 2 to be evaporated, and condense to the surface of this metal layer 2 and always to the desired thickness, depending on a plurality of influence quantities, e.g. composition, to melt 23.:. the amount of energy imported, as well as the amount of substance to be evaporated.

• · · **. The heating of the melt 23 is effected, for example, by the wall • · ... 25 which surrounds the melt 23. The wall • · *. * · * 3 0 2 5 heats the heating coil 26 which is energized to source 20. The organic product 22 is fed to the melt. *** '23 in the form of a molten material 33 coming from the inlet opening 28 to the interior space 34 surrounded by the wall 25. Melt material 33 is fed at the same rate at which organic material 22 is evaporated per 2 surfaces of the metal layer. The evaporation rate, on the one hand, and thus the feed rate of the molten material 33, on the other hand, depend on the feed rate of the carrier 1 to be vaporized on the metal layer 2 through which it is transported through the vaporizing coating device 9.

In order to coat the metal layer 2 with the protective layer 3, the heating coil 26 is connected to the voltage of the power supply 20. The heating power generated by the heating coil 26 heats the melt 23 above the boiling point 10, whereupon the vapors 21 rise from the evaporator 19 in the direction of the metal layer 2 passing through the slot 24 and sealing to the surface of the metal layer 2.

When preparing the protective layer 3 from resins, foams or the respective mixture, it is recommended that the protective layer 3 be vaporized by coating on at least two vaporizers 19, 35. 20 in the first evaporator 19 resin material 22 which may be synthetic resin, natural resin or a mixture thereof, while the second evaporator 35 evaporates natural wax, artificial wax or a mixture thereof. But it is also possible to vaporize both evaporators. 25, 19, 35 in each case the same substances, which may be • · either natural resin or artificial resin or a mixture of both or natural wax or artificial wax or both - * '1! or a mixture of identical or different waxes and resins. The second evaporator 35 includes, like the first evaporator 19, a power supply 36, which may be the same power supply as the first steam generator. Otherwise, the second vaporizer may be constructed in the same manner as the first vaporizer, whereupon the vapors 37 of the metal to be vaporized will rise; 35 in the direction of 2 layers. From both vaporizers 19, the rising vapors 21, 37 form either two layers on the surface of the metal layer 2, the vapors rising from the second evaporator 35 forming the second protective layer 39. , or the gases 37 rising from the second evaporator 35 encounter the protective layer 3 formed by the first evaporator 19 while still uncured, whereby the vapors 37 emerging from the second evaporator 35 form a mixture with the substance of the first protective layer 3. This mixture, together with the cover 10 itself, forms a gas-tight structural unit.

Correspondingly, the interval between successive evaporators 19, 35 can be selected. The more clearly the vapors 21, 37 in the form of layers 3, 39 applied to the surface of the metal layer 2 from the evaporators 19, 35 in the form of layers 3, 39, the greater the distance between the two vaporizers 19, 35 must be. If it is desired to internally mix the substances deposited by the two vaporizers 19, 35 on the surface of the metal layers 2, the distance 20 between the two vaporizers 19, 35 must be selected so that the rising vapors 37 from the second vaporizer 35 meet the first vaporizer 19 * ..! the substance being spread when it is adhered to the metal • 4 ·

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', to its 2 surfaces, but not yet cured.

Examples: 1. For a carrier made of polypropylene, the aluminum layer is vapor-coated under conventional vapor-drying conditions. Immediately upon completion of the vapor deposition of the aluminum layer, *: ··· still in the same vapor deposition apparatus on a particular *** *** 30 vaporizer of high temperature melting resin, ···. *. which is heated inside the evaporator to an evaporation temperature of 210 °. At this temperature, the vapor rises in the direction of the aluminum layer passing * * * ·; · * and condenses to its surface at a thickness of 0.05 µm. The resin is then used with PENTALYN 255, Hercules Inc., Wilmington, Delaware, 107136 18, which seals to the surface of the aluminum layer in a uniform layer thickness. In it, it cools immediately after application, so that the film can be rolled out of the vapor deposition apparatus as soon as it comes out, 5 without the protective layer being damaged.

2. The carrier made of polyethylene is vapor-coated with an aluminum layer under normal pressure and temperature conditions. Immediately after the application of the aluminum layer, the resin material PLEXIGRUM M 527, Röm GmbH, Darmstadt, is applied to the metal layer surface in a further 10 evaporators. For this purpose, the resin material is heated to its evaporation temperature of about 235 °. At this vaporization temperature, the plastic emerges from the evaporator in the vapor-coating apparatus in a vapor form and is uniformly sealed to the surface of the metal layer. In this case, the plastic adheres to the surface of the rigid metal layer with a thickness of about 0.04 µm. Immediately after adhering to the metal layer, the plastic is so hard that it is possible to roll the evaporation coated film onto roll 20.

3. The polyester support is vapor-coated at normal pressure and heat

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the aluminum layer. Immediately after the application of the aluminum layer, the organic material on its surface is still co-coated in the same evaporation coating machine. which is a resin of Hallolyn 104, Hercules Inc., Wilmington, Delaware, and to which organic matter is added E-Wachs 20R 6149, BASF. E-Wachs is preferred. 20R 6149 increments * · 30 by 10% to Halloly 104. This will normally vaporize the • · · mixture from one evaporator in the direction of the one to be protected: the aluminum layer. Timer is vaporized with E-wax and condensed in aluminum

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• 1 to 35 layers. Before forming a solid · 19,107,136 layer on the aluminum surface, another vaporizer is vaporized from the second evaporator in the direction of the Halloly 104 surface to be coated.

• · · • »1« «♦ ·« • · «· •« · · · ·

Claims (24)

1. I I 4 107136 1. Foil with two. mainly flat parallel foil surfaces, at least one of which is provided with a metal layer (2), on whose yη foil surface facing metallic surface a layer is pervaded, which covers the metallic surface over the entire surface, characterized in that the sieve is formed as a metallic surface. adhesive protective layer ¢ 3), which consists of an organic product and which is pinned to the metallic surface immediately after the application of the metal layer (2) in a metallization plant used for metallization, still before a mechanical loading of the metallic surface, the organic product being its meadow phase has a good affinity for the metal in the metal layer (2) and adheres thereto. 2. Foil according to claim, characterized in that the organic product is formed as an artificial resin with a molecular weight stone of more than 10000 kp. Foil according to claim 2, characterized in that the synthetic resin is formed as a lacquer resin. 4. Foil according to claim 1, characterized in that the organic product is formed as a synthetic wax with a molecular weight less than 10000 kp. 5. Foil according to claim 1, characterized in that the organic product is formed as a natural resin. Foil according to any one of claims 1-5, characterized in that the organic product is designed as a pressure primer which facilitates the printing of the metallic surface. <4 7. A film according to any of claims 1-6, characterized by the protective layer (3) * I «being very thinly applied. A film according to any one of claims 1-7, characterized in that the protective layer (3) covers the non-scratched metallic surface (6). 9. A film according to any one of claims 1-8, characterized in that the protective layer (3) has an anti-corrosive property which protects the metal layer (2) against corrosion. 10. Foil according to any of claims 1-9, characterized in that the protective layer (3) is a bonding bond. << a * .. .. · 30 11. Foil according to any of claims 1-10, characterized in that the protective layer (3) • * · is compressible. I I Foil according to any of claims 1-11, characterized in that the protective layer (3) 1 is arranged as a basis for a caching. I I I 4 13. A film according to any one of claims 1 to 12, characterized in that the protective layer (3) evenly receives an extruded material which crystallizes on the same. Foil according to any of claims 1-13, characterized in that the protective layer (3) is physiologically objectionable. Foil according to any of claims 1-14, characterized in that the protective layer (3) is odorless. Foil according to any of claims 1-15, characterized in that it has as a carrier material (1) a polypropylene. Foil according to any of claims 1-15, characterized in that it has as a carrier material (1) a polyester. 18. A film according to any one of claims 1-17, characterized in that the protective layer (3) hardens a top layer of the metal layer (2) which is facing the same, so that it has a high abrasion resistance. A method of manufacturing a protection for a metal layer (2) coated on a foil, wherein the metallic surface of the film facing the sheet is covered with a protective layer (3), characterized in that the protective layer (3) is made of an organic product. which is deposited on the metal layer (2) immediately adjacent to the suspension of the metal layer (2) in the metallization plant used for metallization, before the metal layer (2) is subjected to mechanical stresses, the organic product from its meadow phase having a good affinity for metal deposited. onto the metal layer (2) and adhere to it. Method according to claim 19, characterized in that a natural resin which,. organic layer is applied to the metallic surface (6) of the metal layer immediately after the coating of the • e '·' metal layer (2), before the film covered with the metal layer is wrapped together. 4 * * '· *' 25 21. A method according to any one of claims 19 or 20, characterized in that the organic layer is applied very thinly. Method according to any one of claims 19-21, characterized in that the organic layer is applied to the metal layer (2) directly from at least one heated extender (19), to which: (22) is applied at a rate consistent with an abrasion rate at which the metal layer (2) is applied to a carrier material (1). • · ·. The method of claim 22, characterized in that the exchanger (19) is electrically heated through its surface. (I i 4 «4« I «I t · t 1 * 41 4 4 · 107136 24. A method according to any of claims 19-23, characterized by dewatered resin material (22) which organic layer is impinged on the metal layer (2) from a resin (23) brought into the extender (19) for extension. · «· • · · · · • · • t · ·« • · t • · · IM • · • M i V