CS223871B2 - Method of making the combined layered substances - Google Patents

Abstract

A laminate of paper, metal and lacquer layers is formed by initially applying a coating of adhesive (5) to one surface of a layer (4) of metal formed by vacuum deposition on a layer of lacquer (3) which is carried by a moving transfer foil (1), and then pressing the adhesive surface into contact with a moving layer of paper (6) by means of a calander (11), and subsequently stripping the transfer foil from the lacquer layer. The transfer foil is highly polished and is coated with a release agent (2). The preferred metal is aluminium and the lacquer may be coloured. Both wet and dry adhesive may be employed as required and both adhesive and lacquer can be saponifiable to assist in removing the laminate from an article, e.g. a bottle, to which it is applied. <IMAGE>

Description

The invention relates to a process for the production of a combination of a laminate^pand^pwith at least · poison layer of varnish and metal layer.

Dosu^d · Are stamp^{ámy d}va · zp^atSat^by ja^{k can}provide paper with metal surfaces. In one method, the paper is coated with aluminum by dry or wet laminating. Wax laminating can also be used in the present case.^Tento z^pSat^b je dra^hand does not produce any high gloss mirror effect. This mirror effect can only be good as much as the roughness of the paper on which aluminum is laminated allows. For these purposes it is possible to rule^pou^žívat^pI only love pa feathers having a comparatively rough surface. Inequalities^povrc^hu is a nest foil so that the rough surface quality is also visible on the aluminum foil. The resulting mixtures^l the calf is unwieldy^pro urmté sealants for further processing. Paper that is laminated with aluminum acquires the property of aluminum foil. This has a bad effect after the deformation to return to the original state^withBye^tn^E printable and easy to tear when pressed. These drawbacks make it difficult to use for the production of labels. It is also possible^ofbut her from^poto^pyou^les^{, ex}fasting^Od returnable la ^ J hardly o^pt oddiěht. Ka^palina^{, p}oužit^and k odtetent hardly penetrates^pO^d aluminum foil so that more · no^- pot^ŘE^bn^and etteeta will not go^do st^ykwith a separating liquid over its entire surface. Aluminum^{á foil}ie^{, k}and^šrovan^and on^papir is also relatively expensive both in production and in the price of the basic material. Thus, paper that is provided with an aluminum foil behaves similarly to aluminum foil during further processing. Regardless of what paper you are making for^této laminated Шку used, the finished product does not adapt to the nature of paper but aluminum foil.

· The second method is frequently used in ^the papnů terých the pickets ^P PreIns ialwvá ^plated metallizing layer. Metallization occurs under a vacuum of at least 0.07 to 0.13 Pa. To create this vacuum should be strong cardboard and PA ^pi r ^y ^ Usk p ^Rik graceful ^of 3% moisture. Considerable energy needs to be used for this purpose. In addition, these layered fabrics are expensive in that the coating applied to the dried substrate fits substantially into the pores of the carrier, so that the coating must be applied strongly in the layer to fill the pores.

^With ušením ^p and ^{p y} handbook at Staples 3% moisture Numeric results further · danger that the paper becomes brittle. Furthermore, slight cracks are formed, are exercised ^on ly ^a very negative OVL ^and outside ^and I ^to axis ^{t of} the final product. Finally, high drying paper suffers from its dimensional stability, that ^the ZTO that ^e ^ em ^{to the} ostium of him after metallization mound must again be re-moistened.

It is precisely on this treatment that the vacuum metallization of the paper is associated with considerable energy losses, which makes the process very expensive.

It is therefore an object of the present invention to improve the production of a multilayered combination so as to provide a mirror surface using the cheapest paper and using the least energy loss possible.

According to the invention, this object is achieved by applying a lacquer layer to a flat-surface carrier film on which a metal layer is deposited and the metal-coated paper is glued together with a wet adhesive and after drying the wet adhesive, the carrier film is separated from the lacquer layer.

In this laminated combination, the metal layer mirror is independent of the nature of the paper surface. It is governed more by the flatness of the surface of the carrier film on which the combination of the laminate is formed, which in its entirety is transferred to the paper. The paper does not need to be pre-dried prior to metallization. This saves significant energy, investment and time costs. For example, a 70 g / m2 basis weight paper is coated with a laminating adhesive containing a 50% solids component. 4 g / m ² is applied to the paper to compensate for unevenness of the paper surface. Only 2 g / m ^{2 of} water is dried from this laminating adhesive to re-establish a moisture content equilibrium of 70%. Only relatively low energy costs are used for this drying compared to drying paper which has to be dried from metal to metal by 70% to 3% for steaming purposes. Combination of layers. Furthermore, the fabric is very durable, since the paper is still maintained at at least 70% moisture, important to maintain quality. of paper. The paper gains its strength, it does not. is fragile and is. cleared of cracks. Also, the dimensional stability of the paper is not negatively affected. In total, the manufacturing cost of producing the laminate of the invention is only 50% of the cost of laminating paper with aluminum foil.

According to a preferred embodiment of the invention, a separating layer is applied to the carrier film to facilitate separation of the lacquer layer from the carrier film prior to application of the lacquer layer. This achieves that the lacquer layer separates well from the carrier film without damaging the lacquer layer. The lacquer layer is in this way impermeable and protects the layered fabric according to the invention against harmful effects. The laminate formed in this way can nevertheless be well separated, for example from return bottles, since the solvent dissolves the lacquer layer and gets onto the paper immediately through the relatively thin layer of metallization. The paper is adhered to the bottle by glue, which is separated from it by the action of solvent.

The method of the invention produces a combination of a laminate in a single process to produce a paper with a high gloss metal layer. The carrier film can be reused several times. The multilayer coating consists essentially of a primer, a vacuum metallized layer and a laminating adhesive. It has a high-gloss mirroring, which results from a layered construction on a very smooth surface of the carrier film. This high-gloss mirroring is also retained after removal of the carrier film and transfer to paper.

Further details of the invention will be apparent from the following detailed description and the accompanying drawings, in which a preferred embodiment of the invention is illustrated by way of example. In the drawings, FIG. 1 is a cross-sectional view of the laminate prior to separation of the carrier film, FIG. 2 is a schematic of a device for gluing the carrier film with paper and subsequent separation of the carrier film; up to separation of the carrier film from the coated paper.

The laminate adapted to convey the combination of the laminate consists essentially of a carrier film, preferably a polyester film 1, a separating layer 2, which may be dispensed with if the base lacquer 3, which does not have a strong film for the carrier film, affinity, of metal layer 4,. vacuum laminated, laminating adhesive 5, as well as paper layer 6. A method of making a laminate combination is based on a transfer film. This consists of a carrier film 1 with a high-gloss and reflective surface. A separating layer 2 is provided on this carrier film, on which the base lacquer layer 3 is thinly applied. preparatory work process. The desired metal layer 4 is vacuum-vapor deposited thereon. The combination of transfer foils 7 'prepared in this way is coated with an adhesive 9 on the varnishing machine 8, being a wet adhesive. The wet adhesive may be briefly pre-dried in the oven 10.

The transfer film 7a after leaving the dryer 10 reaches the calender 11. The adhesive layer 9 of the transfer film 7a is pressed between the two rolls of the calender 11 with the paper layer 8 so that it is firmly glued to the transfer film combination 7 to form a unit.

This is cooled on the surface t by a cooling roller 13 as desired. After leaving the cooling roller 13, the carrier film can be separated from the lacquer 3. For further use, it is wound on a spool 14. The laminate combination formed by paper layer 6, metal layer 4 and primer 3 is wound on another spool.

The separating layer 2 improves the possibility of separating the primer layer 3 from the carrier film 1. If the primer layer 3 does not have a strong affinity for the carrier film 1, this separating layer 2 can be dispensed with.

When selecting the carrier film 1, it is particularly important to have a smooth, high-gloss and reflective surface. The quality of the metal layer depends on the surface quality of the backing sheet 1. It is also possible through the base ^l and ^k 3 ^{P t} Renasa NELES ^tragacanth e ^f e ^{KTY, p} n ^p, and ^d not ^to artáčovan ^{é é} carrier effects fehe first

All metals suitable for vacuum metallization, especially aluminum, can be used to produce the metal layer. Since the surface of the carrier film 1 is highly glossy and reflective, the layer of basecoat applied obzv 3 T ^{E LAS} thin. Inequalities. What are pnkladné seen on the paper surface with ^the carrier ^{film 1} e ^ nevznteaJ so that ^d of the compensation required mtey Nern basecoat layer 3rd

Dispersing and dissolving adhesives in the form of wet adhesives may be used as adhesives and wax-containing adhesives may also be used to glue the paper layer.

In the selection of the primer 3, various applications can be used. Especially the use of the thymus sweatpants should be remembered. ^kt ns MHz to be released in conventional cleaning methods. When using a laminate for the production of labels, this treatment may be advantageous. For example, if the labels are on bottles. ^p o which are in JeJmh ^yčišt en ^{Star I} suitable ^for reuse. For the same reason, it is preferred that the base coat layer 3 'be made saponifiable.

It is also possible for a very thin lacquer layer 3a to be applied to the metal layer 4 before the adhesive 5 is applied. This thin lacquer layer 3a takes care of this. for the metal layer 4 to have gas-tight properties. For this ^to the layer 3 ou ^l and u is applied ^{to the PID} le lo, whereby the paper is glued to the metal layer 4. The paper. which is coated in this way by the metal layer 4, has gas-tight properties and can be particularly used for packaging purposes. If the container must be leak-proof. The packaging material which ^J 'ev ^y ro ^b en Hmte way ^{of wearing} Mute ^{b yt} used ^Gd t ^p ro o ^ ¹ ^ ^determined ene ^Star to hop An ^{Iz would also} sensitive goods, for ^{the example,} foods suffered harm.

Since the individual layers of the laminate according to the invention are very thin, the laminate is very flexible and thus easy to process. It can be manufactured at relatively low material cost and therefore cheaply. Intermediate drying and subsequent re-moistening of the carrier are not required.

It is also possible to use polycarbonate instead of polyester film. It also has a high gloss surface and is therefore suitable for applying a primer layer 3a of the metal layer 4. By contrast to the possibility shown in FIG. 2, it is further conceivable to apply adhesive S not on the metal layer 4 but on the paper layer 6. It is necessary to provide a varnishing machine 8 and in this case a dryer 10 during the paper path.

For the ^DDE EDGINGPROFILE ^s ^ ^{t characterized} VRS ^from his e concerns: chromkomplexní compound such as is disclosed firm Dumont marketed as Quilon C. This decoupling layer naJíž ^says that a thickness of 1 ^{kA, S g /} m ² on ^the carrier ^film as well. ^the ROM ^of the ^{already h} om e separating layer consists of silicon that just nan ^{must be} very thin in thickness ^t ^ ce ^{characterized} VRS ^1.5 g ^{/ / 2.}

Claims (2)

A method for producing a composite laminate of paper with at least one lacquer and one metal layer, characterized in that a lacquer layer is applied to a flat surface carrier film to which a metal layer is vaporized and the metal layer paper is glued together ^to R ^eH of tepicHa and dried, ^EM Reho possible ^to glue the carrier film is separated from the lacquer layer. 2. A method according to claim 1, characterized in that, prior to application of the lacquer layer, a separating layer is applied to the carrier film to facilitate the separation of the lacquer layer from the carrier film. 3. Process according to claim 1 or 2, characterized in that after the vapor deposition process at this VRS ^t vu metal ^Pre nan bonding at ^about .mu.M ^and a thin layer of varnish. ⁴ . ^{From the} mouth of ^{BP dL} e ^b of the ^{reason 1-3 in} ^ .načuJnn in that the wet adhesive on the layer of metal applied in · the height of filling the irregularities of the paper. 5. The method according to any one of claims 1 to 4, wherein the carrier film is a polyester film. YOU FIND Sixth ^Zp Úsobí Subclass ^b of the ^{reason 1} S ^ nacuJmí in that as the carrier foil used for the polycarbonate film. 7. The method of claims 1 to 6, wherein the wet adhesive is saponifiable. 8. A method as claimed in any one of claims 1 to 7, wherein the lacquer layer is printable. 9. The method of items 1 to 8, wherein the lacquer layer is dyeable. 10. A method according to claims 1 to 9, characterized in that the lacquer layer is granular. 11. A method according to any one of claims 1 to 10, wherein the lacquer layer comprises a lubricant to increase the abrasion resistance of the paper. 12. The method according to claims 1 to 11, r a m Dehm the TM ^layer, firmly on the carrier film, to which is separated from the paint film after drying the wet glue to manufacture new metal layer and lacquer coats a new varnish layer. 13. The method of claims 1 to 12, wherein the wet adhesive comprises wax. 14. A method according to any one of claims 1 to 13, wherein the carrier film has a distorted surface to achieve surface effects. 2 llstyvýkresů