Laser frame paper

Abstract

The utility model relates to the technical field of packaging paper, and discloses laser frame paper which comprises a body paper layer and a transfer glue layer which are arranged in a stacked mode, a laser layer is further arranged on the side, away from the body paper layer, of the transfer glue layer, the laser layer is used for recording laser patterns, and a water paint layer is further arranged between the body paper layer and the transfer glue layer. The water-based paint layer is arranged between the transfer glue layer and the body paper layer, the surface of the body paper layer is covered with the water-based paint layer, after the water-based paint layer is dried, the surface of the body paper layer is smooth, the sealing performance of the body paper layer is improved, and laser patterns recorded on the laser layer on the transfer glue layer can have a better laser effect.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging paper, in particular to a laser frame paper. Background Art

[0002] Cigarette frame paper is a paperboard used to support and position the frame of a cigarette box. It is mainly used to line the inside of a cigarette box to support and position the box, ensuring the stability and aesthetics of the box during transportation and use. Currently, most cigarette frame papers are made of composite aluminum foil and then printed, or with embossed patterns. The products are relatively simple. A small number of frame papers with laser effects are made using a coated composite transfer method.

[0003] For laser frame paper with coating composite transfer method, it is first necessary to coat the transfer information layer on a film (usually a PET film), emboss the transfer information layer with laser and then aluminum-plate it, and then compound and peel it with the frame paper base paper to form the laser frame paper. After peeling, the transfer information layer on the PET film is completely transferred to the frame paper base paper, and the PET film becomes a transparent film, no longer has laser information, and cannot be reused.

[0004] The patent application publication number CN111764195A discloses a production process of high-gloss cardboard and its use as frame paper, which is made by coating a transfer glue layer on the surface of a BOPP film, then peeling it off after laminating it with cardboard, and then printing a protective layer. After the surface of the BOPP film is corona pre-treated, a water-based transfer glue is evenly coated with a rubber roller, and a transfer glue layer is formed after drying. The coated BOPP film is laminated with the cardboard, and the balanced cardboard is transferred to a peeling machine to peel the BOPP film at a uniform speed. The above-mentioned peeled BOPP film can be reused after finishing, which reduces the production cost.

[0005] However, the above-mentioned BOPP film coating transfer glue layer is directly compounded with the cardboard paper, and the cardboard paper itself has poor flatness and sealing properties, which affects the laser effect after transfer. Utility Model Content

[0006] The utility model aims to provide a laser frame paper to solve the problem in the prior art that the transfer glue layer of the frame paper affects the laser effect after being compounded on the cardboard paper.

[0007] In order to achieve the above-mentioned purpose, the utility model provides a laser frame paper, comprising a stacked base paper layer and a transfer adhesive layer, a laser layer is further provided on the side of the transfer adhesive layer away from the base paper layer, the laser layer is used to record a laser pattern, and a water-based paint layer is further provided between the base paper layer and the transfer adhesive layer.

[0008] Preferably, the water-based paint layer is a water-based polyurethane resin layer.

[0009] Preferably, the waterborne polyurethane resin layer is coated on the base paper layer by a gravure coating process.

[0010] Preferably, the transfer adhesive layer is a water-based polyurethane transfer adhesive layer, and the transfer adhesive layer is coated on the surface of the water-based paint layer.

[0011] Preferably, an aluminum plating layer is further provided on a side of the laser layer away from the transfer adhesive layer.

[0012] Preferably, the thickness of the aluminum plating layer is in the range of 330-430 angstroms.

[0013] Preferably, a protective layer is further provided on the side of the aluminum-plated layer facing away from the laser layer.

[0014] Preferably, the protective layer is an ink layer.

[0015] Compared with the prior art, the laser frame paper of the embodiment of the utility model has the beneficial effect that a water-based paint layer is arranged between the transfer adhesive layer and the base paper layer, and the water-based paint layer covers the surface of the base paper layer. After the water-based paint layer is dried, the surface of the base paper layer is smoothed and the sealing of the base paper layer is increased, and the laser pattern recorded on the laser layer on the transfer adhesive layer can have a better laser effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the laser frame paper of the utility model.

[0017] In the figure, 1. base paper layer, 2. water-based paint layer, 3. transfer glue layer, 4. laser layer, 5. aluminum plating layer, 6. protective layer. DETAILED DESCRIPTION

[0018] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] A preferred embodiment of the laser frame paper of the utility model is as follows: Figure 1 As shown, the laser frame paper includes a base paper layer 1, a transfer glue layer 3, a laser layer 4 and a water-based paint layer 2. The base paper layer 1 is white cardboard, which forms the base material of the laser frame paper. The transfer glue layer 3, the laser layer 4 and the water-based paint layer 2 are all arranged on the base paper layer 1.

[0020] The base paper layer 1 uses 150g / ㎡-300g / ㎡ cardboard. In this embodiment, the water-based paint layer 2 is coated on the surface of the base paper layer 1. The water-based paint layer 2 makes the paper surface smooth and flat and increases the sealing of the cardboard, thereby increasing the laser effect of the laser layer 4.

[0021] The transfer adhesive layer 3 is arranged on the side of the water-based paint layer 2 away from the base paper layer 1, and the laser layer 4 is arranged on the side of the transfer adhesive layer 3 away from the base paper layer 1. The laser layer 4 is used to record the laser pattern. The transfer adhesive layer 3 is used to transfer the laser pattern on the BOPP laser transfer film and form the laser layer 4 on the side away from the water-based paint layer 2.

[0022] In this embodiment, the laser surface of the BOPP laser transfer film is wet-laminated with the transfer adhesive layer 3, and then dried by hot air at a temperature of 60°C-80°C and a coating dry weight of 2g / ㎡-4g / ㎡. After curing, the BOPP laser transfer film is peeled off from the base paper layer 1, and the laser pattern is transferred to the surface of the transfer adhesive layer 3 and presents a laser layer 4 that is a mirror image of the BOPP laser transfer film.

[0023] The production of BOPP laser transfer film does not require coating of the transfer information layer. Instead, the heat-sealing layer of the BOPP laser transfer original film is softened by preheating, and then pressed and separated with the laser plate to obtain the laser pattern. The BOPP laser transfer film is wet-compounded with the base paper layer 1. After drying, the BOPP laser transfer film is separated from the cardboard. The laser pattern on the BOPP laser transfer film is mirror-transferred to the surface of the transfer adhesive layer 3 to form laser paper. The laser effect on the BOPP laser transfer film will not disappear. The BOPP laser transfer film can be reused 3-5 times, reducing the production cost of laser frame paper.

[0024] The laser frame paper has a water-based paint layer 2 between the transfer adhesive layer 3 and the base paper layer 1. The water-based paint layer 2 covers the surface of the base paper layer 1. After the water-based paint layer 2 is dried, the surface of the base paper layer 1 is smoothed and the sealing of the base paper layer 1 is increased. The laser pattern recorded on the laser layer 4 on the transfer adhesive layer 3 can have a better laser effect.

[0025] Preferably, the water-based paint layer 2 is a water-based polyurethane resin layer.

[0026] The water-based polyurethane resin is used as the raw material of the water-based paint layer 2 , which has the characteristics of good water dilution, quick drying, and strong adhesion, and effectively increases the flatness and sealing of the base paper layer 1 .

[0027] Preferably, the waterborne polyurethane resin layer is coated on the base paper layer 1 by a gravure coating process.

[0028] In this embodiment, the water-based polyurethane resin layer is coated on the surface of the base paper layer 1 by gravure coating process, and dried by hot air, with a drying temperature of 65°C-100°C and a coating dry weight of 1g / ㎡-4g / ㎡. As a mature process, the gravure coating process can ensure uniform coating of the water-based paint layer 2.

[0029] Preferably, the transfer adhesive layer 3 is a water-based polyurethane transfer adhesive layer, and the transfer adhesive layer 3 is coated on the surface of the water-based paint layer 2 .

[0030] The transfer adhesive layer 3 is made of water-based polyurethane raw material, which has high fastness, strong stability, and excellent bonding strength and adhesion.

[0031] Preferably, an aluminum plating layer 5 is further provided on the side of the laser layer 4 facing away from the transfer adhesive layer 3 .

[0032] The aluminum-plated layer 5 can make the laser pattern more obvious and have a metallic luster. In this embodiment, the aluminum-plated layer 5 is formed by a vacuum aluminum-plating process.

[0033] Preferably, the thickness of the aluminum plating layer 5 is in the range of 330-430 angstroms.

[0034] Preferably, a protective layer 6 is further provided on the side of the aluminum-plated layer 5 facing away from the laser layer 4 .

[0035] The protective layer 6 can protect the aluminum-plated layer 5 so that the aluminum-plated layer 5 is not easily damaged by friction or scratches.

[0036] Preferably, the protective layer 6 is an ink layer.

[0037] The ink layer has the characteristics of good printability, strong adhesion, fast drying, etc. In this embodiment, the ink layer is made of water-based polyurethane material, which is dried by hot air, with a drying temperature of 80°C-100°C and a coating dry weight of 0.5g / ㎡-2g / ㎡.

[0038] The working process of the utility model is as follows: when the laser frame paper is produced, the base paper layer 1 adopts 225g / ㎡ white cardboard; the water-based paint layer 2 is preferably water-based polyurethane resin, and the water-based paint layer 2 is coated on the surface of the white cardboard by gravure coating process, and is dried by hot air, the drying temperature is 75℃, and the coating dry weight is 2.5g / ㎡; a transfer adhesive layer 3 of water-based polyurethane material is coated on the water-based varnish layer, and the laser surface of the BOPP laser transfer film and the transfer adhesive surface are wet-compounded, and are dried by hot air, the drying temperature is 70℃, and the coating dry weight is 3g / ㎡. After curing, the film and the paper are peeled off, and the laser pattern is transferred to the surface of the water-based transfer adhesive and presents a laser pattern that is a mirror image of the BOPP laser transfer film; vacuum aluminum is plated on the laser layer 4 to form an aluminum-plated layer 5, and the thickness of the aluminum layer is 400 angstroms; ink is printed on the aluminum-plated layer 5 to form a protective layer 6, which is dried by hot air, the drying temperature is 80℃, and the coating dry weight is 1g / ㎡. Through the above process, the slitting method is used for precise slitting to form products, and the slitting specifications are 94mm*600m.

[0039] In summary, the embodiment of the utility model provides a laser frame paper, in which a water-based paint layer is arranged between the transfer adhesive layer and the base paper layer, and the water-based paint layer covers the surface of the base paper layer. After the water-based paint layer is dried, the surface of the base paper layer is smoothed and the sealing of the base paper layer is increased. The laser pattern recorded on the laser layer on the transfer adhesive layer can have a better laser effect.

[0040] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A laser frame paper, characterized in that: The invention comprises a base paper layer (1) and a transfer adhesive layer (3) which are stacked, wherein a laser layer (4) is provided on the side of the transfer adhesive layer (3) facing away from the base paper layer (1), and the laser layer (4) is used to record a laser pattern, and a water-based paint layer (2) is provided between the base paper layer (1) and the transfer adhesive layer (3).

2. The laser frame paper according to claim 1, characterized in that: The water-based paint layer (2) is a water-based polyurethane resin layer.

3. The laser frame paper according to claim 2, characterized in that: The waterborne polyurethane resin layer is coated on the base paper layer (1) by a gravure coating process.

4. The laser frame paper according to any one of claims 1 to 3, characterized in that: The transfer adhesive layer (3) is a water-based polyurethane transfer adhesive layer (3), and the transfer adhesive layer (3) is coated on the surface of the water-based paint layer (2).

5. The laser frame paper according to any one of claims 1 to 3, characterized in that: An aluminum plating layer (5) is also provided on the side of the laser layer (4) facing away from the transfer adhesive layer (3).

6. The laser frame paper according to claim 5, characterized in that: The thickness of the aluminum plating layer (5) is in the range of 330-430 angstroms.

7. The laser frame paper according to claim 5, characterized in that: A protective layer (6) is also provided on the side of the aluminum-plated layer (5) facing away from the laser layer (4).

8. The laser frame paper according to claim 7, characterized in that: The protective layer (6) is an ink layer.

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