TWM563300U - Surface-coating apparatus for shaped paper product and shaped paper product made by the same - Google Patents

Abstract

The present invention discloses a paper-plastic surface coating apparatus and a paper-plastic product thereof, the paper-plastic surface coating apparatus comprising: a programmable mobile device, a nozzle unit and a control device, the programmable mobile device having A moving portion connecting the nozzle unit is sprayed with paint on the outer surface of the paper body to form a bonding layer. By forming the bonding layer on the outer surface of the paper-plastic body, not only can the surface of the paper-plastic body be chipped and dust formed effectively: when the ink is attached to or printed on the surface of the paper-plastic body by a surface treatment film When the layer is on the layer, the problem of distortion of graphic decoration can be avoided, and the processing time can be accelerated, and it is suitable for mass production of paper-plastic products having the bonding layer.

Description

Paper-plastic surface coating equipment and paper-made products thereof

The present invention relates to a paper-plastic surface coating apparatus and a paper-plastic product thereof, and more particularly to a paper-plastic surface coating apparatus suitable for automated production.

Due to the prevalence of existing 3C electronic products, their packaging materials, such as cartons and interior boxes, must have a certain structural strength to protect these 3C electronic products from external impact, and the appearance of the packaging materials should be beautiful and beautiful. Graphic printing to promote consumer buying desire. In order to achieve the above requirements, various paper-making processes and related production machines that use mold components to mass-produce paper-plastic products have been proposed.

The existing paper-plastic process is generally based on waste paper and natural plant fibers (such as palm stalks, bagasse, bamboo chips, reeds, etc.) as raw materials. After the raw materials are pulverized and beaten, they are firstly dispersed by water to form a wet fiber slurry, which is then consistently The plurality of production machines related to the process comprises: slurrying the wet fiber slurry, and then pressing and heating the collected slurry to form the substrate of the paper-plastic product.

However, since the substrate of the paper-plastic product (such as a semi-finished product or a finished product) is mainly composed of fibers, the following problems occur: (1) the surface of the substrate of the paper-plastic product is easily chipped. Dust is not conducive to the environment; (2) When inkjet printing on the surface of the paper-plastic product, excessive fiber swarf on the surface of the substrate often causes fainting or ink absorbing, which may cause distortion of printed graphics. (3) Due to the relationship between the paper fibers, the flatness of the surface of the substrate of the paper-plastic product is poor, and the problem of unevenness often occurs, so that the external appearance is not good, and the graphic distortion is easily caused at the time of printing; The surface of the substrate of the paper-plastic product is poor in water repellency. Accordingly, in order to meet the characteristics or specifications of the final product in some specific needs, it is necessary to pretreat the surface of the substrate of the paper-plastic product; however, the paper is produced by using a conventional wet fiber paper-making process including a production machine. In the case of products, if the substrate (semi-finished product) of the paper-plastic product needs to be surface-coated, it is often necessary to interrupt the production process and then apply manual processing, which not only interrupts the process, but also reduces the automatic production efficiency, and simultaneously coats it by hand. The surface of the paper-plastic product is easy to make the formed coating layer uneven, so that the product yield is lowered, and the quality is difficult to ensure.

Therefore, it is necessary to provide a paper-plastic product surface coating apparatus to solve the above-mentioned problems of the prior art.

In order to solve the above problems of the prior art, the main purpose of the present invention is to provide a surface coating device for paper-plastic products, which is suitable for being disposed in a continuous continuous production machine of a wet fiber paper-plastic process, and capable of automatically coating paper-plastic products. The surface of the body increases the efficiency of automated production.

Another object of the present invention is to provide a surface coating device for paper-plastic products, which can spray atomized paint on the surface of the paper-plastic body by using the cooperation of the nozzle unit, the programmable moving device and the control device to form a uniform distribution layer. Not only can it quickly spray large-area coatings to save processing time, but also facilitate mass production, while at the same time ensuring high product yield and quality.

Another object of the present invention is to provide a paper-plastic product produced by the above-mentioned paper-plastic surface coating apparatus, and a bonding layer formed outside the surface of the paper-plastic body of the paper-plastic product can simultaneously have the following various technical benefits: (1) The bonding layer can reduce the chance of chipping and dust generation on the surface of the paper-plastic body to meet environmental protection standards; (2) the combination of the surface of the paper-plastic body when ink-jet printing on the surface of the paper-plastic product The layer is not easy to cause the problem of distortion of printed graphics caused by faint ink or ink absorption; (3) the bonding layer can improve the flatness of the outer surface of the paper-plastic body, reduce the problem of uneven surface, and enhance the external appearance (4) the bonding layer can enhance the water repellency of the surface of the paper-plastic body; and (5) the bonding layer of the paper-plastic article produced by the paper-plastic surface coating device of the present invention, enabling the paper The outer surface of the plastic has excellent wear resistance.

In order to achieve the above object, a preferred embodiment of the present invention provides a paper-plastic product surface coating apparatus for performing a coating processing operation on at least one surface of at least one paper-plastic body, comprising: a programmable mobile device, a nozzle unit and a control device, wherein the programmable moving device has a moving portion including an engaging end, and programmablely controls the moving portion to move to a predetermined spray relative to the at least one surface of the at least one paper-plastic body Path and / or speed of movement.

The nozzle unit has at least one outward nozzle, at least one pneumatic control valve, and at least one liquid paint inlet connected to the at least one outward nozzle, and the nozzle unit is mounted on the joint end of the programmable mobile device and the movement Moving together, the at least one air pressure control valve is configured to control the at least one outward nozzle to spray liquid paint onto the at least one surface of the at least one paper body.

The control device has at least one controller for adjustable control of a pneumatic pressure of a controlled air pressure source connected to the air pressure control valve, and for adjustable control of the at least one liquid paint inlet connected to the nozzle unit Gas pressure of the liquid paint source, and then adjustable control The flow rate of the at least one outward nozzle sprays the liquid paint.

In a preferred embodiment of the present invention, the paper-plastic surface coating apparatus is connected between a paper-plastic product thermoforming apparatus and a paper-plastic cutting apparatus according to a processing sequence of a wet fiber paper-making process. .

In a preferred embodiment of the present invention, the paper-plastic surface coating apparatus further includes a conveying device for movably carrying the at least one paper-plastic body to the paper-plastic product thermoforming apparatus and the paper-plastic product Between the cutting devices, and a sensor for sensing that when the at least one paper body reaches a preliminary spraying position, a notification signal is sent to the programmable mobile device and/or the control device to start spraying operation.

In a preferred embodiment of the present invention, the programmable mobile device is an electric drive multi-axis connecting robot arm having a programmable logic controller for programmatically controlling the moving portion to move in the predetermined spray path. And / or the speed of the move.

In a preferred embodiment of the present invention, the moving speed of the nozzle unit moving together with the moving portion forms a relative adjustment between the air pressure of the first air source and the gas pressure of the liquid paint source. The contrast relationship to achieve optimal spray efficiency.

In a preferred embodiment of the present invention, the pressure of the first air pressure source is greater than 0.2 MPa, and the gas pressure of the liquid paint source is controlled to be less than 300 kPa.

In a preferred embodiment of the present invention, the nozzle unit further has a first atomizing air pressure inlet for spraying the at least one outward nozzle to atomize the liquid coating, the at least one paper body On a surface, and the control device, the pressure of a first atomizing air pressure source connected to the first atomizing air pressure inlet is further adjustable.

In a preferred embodiment of the present invention, the pressure of the first atomizing air pressure source More than 150kpa.

In a preferred embodiment of the present invention, the paper product surface coating apparatus further includes a drying device for drying the liquid paint sprayed on the at least one surface of the at least one paper body by temperature.

In a preferred embodiment of the present invention, the at least one outward nozzle of the nozzle unit maintains a distance range of 20-30 cm for the at least one surface of the at least one paper-plastic body, and the at least one outward nozzle has a diameter of about 1.3 mm. The spraying width of the at least one outward nozzle is in the range of 200 to 250 mm per time.

In a preferred embodiment of the present invention, the liquid coating has a viscosity in the range of less than 3,500 centipoise (cps) and comprises one or a combination of compounds, polymers and copolymers.

In order to achieve the above object, another preferred embodiment of the present invention provides a paper-plastic article comprising the at least one paper-plastic body described in the paper-plastic product surface coating apparatus of each of the above preferred embodiments, And the paper-plastic surface coating device sprays the liquid coating on a bonding layer formed on the at least one surface of the at least one paper-plastic body.

In a preferred embodiment of the present invention, when the thickness of the bonding layer ranges from 20 to 200 μm , the number of standard rubbing times of the RCA standard abrasion resistance test in accordance with ASTM F-2357-04 is 3 to 50 times.

In another preferred embodiment of the present invention, the paper product further includes an ink layer that transfers a solvent-containing ink to the bonding layer of the paper product through a printing plate.

In another preferred embodiment of the present invention, the printing plate is a gravure, a letterpress, a net One of the editions and the tablet.

In another preferred embodiment of the present invention, the paper-plastic article further comprises a surface treatment film on the bonding layer of the paper-plastic article of each of the foregoing preferred embodiments.

In another preferred embodiment of the present invention, the surface treatment film is transferred to the bonding layer of the paper product by a mold assembly.

In another preferred embodiment of the present invention, the surface treatment film comprises: a peelable carrier layer, a release layer on a surface of the carrier layer, and a surface on the release layer. The cured layer, the at least one ink layer, and an adhesive layer are located on one of the outermost surfaces of the surface treatment film for adhering to the bonding layer of the paper plastic article.

In another preferred embodiment of the present invention, the surface treatment film further comprises: a decorative layer between the cured layer and the at least one ink layer.

In a preferred embodiment of the present invention, the decorative layer further includes a first decorative structure and a second decorative structure different from the first decorative structure.

In another preferred embodiment of the present invention, the first decorative structure forms a plurality of three-dimensional structures and is arranged in the first decorative structure.

In another preferred embodiment of the present invention, a plurality of reflective bead structures are formed in the second decorative structure.

In another preferred embodiment of the present invention, the composition of the at least one ink layer comprises one of a conventional ink, a soy ink, a heat sensitive ink, a pressure sensitive ink or a conductive ink or a combination thereof.

In another preferred embodiment of the present invention, the material of the carrier layer is selected from the group consisting of polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), and polycarbonate (PC). And a group or any combination of polystyrene (PS).

Compared with the prior art, the paper surface coating device of the present invention is suitable for being disposed in a consistent production machine of a wet fiber paper-plastic process, and can quickly spray a large amount of atomized paint on the surface of the paper-plastic body to save Processing time, forming a uniform distribution layer to ensure high product yield and quality; the dry and hardened bonding layer is formed on the surface of the paper-plastic body, which can reduce the surface chipping and dust generation of the paper-plastic body surface. Opportunity, and can improve the flatness of the surface of the paper-plastic body, reduce the unevenness of the surface, and enhance the aesthetics of the exterior; at the same time, when the graphic is printed on the bonding layer, the bonding layer is not easy to cause halo Or the problem of distortion of printed graphics such as ink absorption can also enhance the waterproofness of the surface of the paper-plastic body.

20‧‧‧Slurry and pre-press equipment

22‧‧‧First upper mold

24‧‧‧First lower mold

26‧‧‧Pulp tank

28‧‧‧Pulp

30‧‧‧ Paper-plastic products thermoforming equipment

32‧‧‧Second upper mold

34‧‧‧Second lower mould

40‧‧‧ Paper and plastic surface coating equipment

42‧‧‧Nozzle unit

43‧‧‧Programmable mobile device

45‧‧‧Control device

46‧‧‧Drying device

48‧‧‧Transfer equipment

50‧‧‧paper and plastic cutting equipment

60‧‧‧Liquid coating

60’‧‧‧ bonding layer

90‧‧‧Printed version

100‧‧‧Pulpwood

102‧‧‧First semi-finished products

104‧‧‧Second semi-finished products (or paper-plastic products)

106‧‧‧ Third semi-finished products (or paper-plastic products)

106’, 106”‧‧‧ Paper products

108‧‧‧ Paper products

200‧‧‧Surface treatment film

300‧‧‧ sensor

320‧‧‧pressure storage tank

413‧‧‧Programmable Logic Controller

422‧‧‧Atomizing nozzle

424‧‧‧At least one outward sprinkler

426‧‧‧At least one pneumatic control valve

428‧‧‧First atomizing air inlet

430‧‧‧At least one liquid paint inlet

438‧‧‧Second atomizing air inlet

432‧‧‧moving department

452‧‧‧At least one controller

1130‧‧‧ solvent transfer

1135‧‧‧Substrate transfer

1042‧‧‧ Paper-plastic body

2010‧‧ ‧ adhesive layer

2020‧‧‧Ink layer

2030‧‧‧Decorative layer

2040‧‧‧solidified layer

2050‧‧‧ release layer

2060‧‧‧ carrier layer

2033‧‧‧First decorative structure

2035‧‧‧Second decorative structure

X‧‧‧ central axis

1 is a schematic view showing the assembly of a paper-plastic surface coating apparatus according to a preferred embodiment of the present invention, wherein the paper-plastic surface coating apparatus is disposed in a continuous automated production machine according to a wet fiber paper-making process. 2 is a schematic view showing a detailed assembly of the paper-plastic surface coating apparatus according to FIG. 1; and FIG. 3 is a partial cross-sectional view showing the A-A' cutting line of the paper-plastic product according to FIG. Wherein the paper-plastic product is produced according to the paper-plastic surface coating apparatus of the preferred embodiment of the present invention; and FIG. 4 is a partial cross-sectional view showing a paper-plastic product according to another preferred embodiment of the present invention, Wherein the ink is transferred onto a bonding layer of a paper-plastic body by a printing plate; and FIG. 5 is a partial cross-sectional view showing a paper-plastic article according to another preferred embodiment of the present invention, wherein the surface-treated film is transferred to On a bonding layer of a paper-plastic body.

The embodiments described in detail below with reference to the drawings will make the advantages and features of the present invention and the methods for achieving these advantages and features more apparent. However, the present invention is not limited to the embodiments disclosed below, and the present invention can be implemented in various ways that are different from each other. The embodiments disclosed below are only used to make the disclosure of the present creation more complete and contribute to the creation of the present creation. A person of ordinary skill in the art can fully understand the scope of the present creation, and the creation is defined in accordance with the scope of the patent application. Throughout the specification, the same reference numerals denote the same structural elements.

Please refer to FIG. 1 , which is a schematic view showing the assembly of a paper-plastic surface coating apparatus 40 according to a preferred embodiment of the present invention, wherein the paper-plastic surface coating apparatus 40 is disposed according to a wet fiber paper-making process. Consistently related to automated production machines. According to the consistency of the wet fiber paper-plastic manufacturing process, the automated production machine mainly comprises a slurry and pre-pressing device 20, a paper-plastic product thermoforming device 30, the paper-plastic product surface coating device 40, and a paper-plastic product. The cutting device 50, wherein the slurry and pre-pressing device 20, provides a first lower mold 24 to collect the wet fiber-containing pulp body 100 in a slurry tank 26 for accommodating the pulp 28, and further A wet embryo (not shown) composed of the pulp material 100 is formed on the upper surface of the first lower mold 24; however, the slurry and pre-compression assembly structure of the pulp-containing pulp body 100 is not limited thereby; In an embodiment, the wet embryo may be formed on the surface of the first upper mold 22. Then, pressurizing causes a first upper mold 22 and the first lower mold 24 to be pre-compressed to compact the wet embryo, and a vacuum environment is formed between the two molds 22, 24 by extracting air. A portion of the moisture and/or moisture contained in the wet embryo is discharged to form a first semi-finished product 102. The paper-plastic hot press forming apparatus 30 provides a second upper mold 32 and a second lower mold 34 to press each other to further compact the first semi-finished product 102 and discharge the portion of the first semi-finished product 102. Water vapor and/or moisture to form a dried second semi-finished product 104; However, it is not limited to use only one hot press forming apparatus 30 for hot press forming or press fitting only once; in other embodiments, several hot press forming apparatuses may be added for preloading and hot press forming. Work, or pre-press and hot press forming operations in the same hot press forming equipment 30 times. In the preferred embodiment, the paper product surface coating apparatus 40 is connected to the paper plastic product hot press forming apparatus 30 and the paper plastic product cutting apparatus 50 according to the processing order of the wet fiber paper plastic manufacturing process. And performing a coating operation of the liquid paint 60 on at least one outer surface of at least one paper-plastic body 1042 composed of fibers in the second semi-finished product 104 (the detailed structure thereof will be described in detail later) to facilitate subsequent formation of a surface bond The third semi-finished product 106 of layer 60'. The paper-plastic cutting device 50 cuts the third semi-finished product 106 by using a die to form a paper-plastic product 108; it should be noted that the first semi-finished product 102, the second semi-finished product 104, and the third semi-finished product 106 are The following description is generally referred to as a "paper-plastic product"; however, in other embodiments, the "paper-plastic product" is not limited to a semi-finished product because it can also be used as a paper-plastic in other applications or needs. The finished product is used; in other embodiments, according to the requirements for different paper-plastic products, the processing order of the paper-plastic surface coating device 40 may be changed before the paper-plastic product hot-pressing device 30 or modified. The paper-plastic product is cut after the device 50.

In other embodiments, the paper-plastic body 1042 of the paper-plastic article 106 of the present invention can also be mass-produced by other conventional paper-forming techniques. In fact, it is only necessary to integrate the various mass manufacturing machines required for the conventional paper-molding technology with the paper-plastic surface coating apparatus 40, and the same automated production line can be configured. The shape of the paper-plastic article 106 can be molded into various three-dimensional geometric shapes, such as a box-shaped body, a cube-shaped body, a triangular body, a rectangular parallelepiped, a trapezoidal body, a cone, a columnar body, and the like, and is not particularly limited.

Please refer to the preferred embodiment according to the present invention as shown in FIGS. 1 and 2 The paper-plastic surface coating apparatus 40 is mainly composed of a nozzle unit 42, a programmable moving device 43, and a control device 45. By controlling the mutual matching between the nozzle unit 42 of the paper-plastic product surface coating device 40, the programmable moving device 43 and the control device 45, the spray coating 60 can be quickly sprayed over a large area. The paper-plastic article 104 is coated on the outer surface of the paper-plastic body 1042 to save processing time, thereby forming a uniformly distributed bonding layer 60', ensuring high product yield and quality.

The programmable moving device 43 has a moving portion 432 including an engaging end for releasably connecting the nozzle unit 42. The engaging end can be a conventional member such as a clamping member, a snap member or a screw member. In the embodiment, the programmable mobile device 43 is an electric drive multi-axis connecting robot arm, and has a plurality of mechanism joints, a programmable logic controller 413, and a servo mechanism (not shown). The programmable logic control The device 413 is configured to programmatically control the moving portion 432 to move to a predetermined spray path and/or moving speed relative to the at least one surface of the at least one paper-plastic body 1042, and the robot arm is articulated by the plurality of mechanisms To allow the moving portion 432 to move or linearly move in a plane or three-dimensional space. In addition, the moving portion 432 can also rotate around a central axis X of one of the joints of the mechanism, thereby driving the nozzle unit 42 to increase the angle of the swing to increase the amplitude of the spraying.

The nozzle unit 42 has at least one outward nozzle 424 , at least one air pressure control valve 426 , and at least one liquid paint inlet 430 fluidly connected to the at least one outward nozzle 424 , and the nozzle unit 42 is mounted on the programmable mobile device 40 . The engagement end is further moved with the moving portion 432 to the predetermined spray path and/or the moving speed, and the at least one air pressure control valve 426 is configured to control the at least one outward spray head 424 to spray the liquid paint 60 outward to the at least one The at least one surface of the paper-plastic body 1042. In the preferred embodiment, the at least one outward nozzle 424 of the nozzle unit The at least one surface of the at least one paper-plastic body 1042 is maintained at a distance of 20-30 cm, preferably 26 cm; the at least one outward nozzle 424 has a diameter of about 1.3 mm, and the at least one outward nozzle 424 has a spray width range of 200 ~250mm / each time. In the preferred embodiment, the liquid coating 60 has a viscosity in the range of less than 3,500 centipoise (cps) and comprises one or a combination of compounds, polymers and copolymers.

As shown in Figure 2, the control device 45 provides a specified gas pressure to a pressure storage tank 320 for storing the liquid paint 60, thereby causing the pressure storage tank 320 to deliver a hydraulic liquid paint source. The at least one liquid paint inlet 430 of the nozzle unit 42 and the control device 45 further has at least one controller 452 for adjustable control of a pneumatic pressure of a controlled air pressure source connected to the air pressure control valve 426, and for Adjusting the gas pressure of the liquid paint source fluidly connected to the at least one liquid paint inlet 430 of the nozzle unit 42 from the pressure storage tank 320, thereby controlling the flow rate of the liquid paint sprayed by the at least one outer nozzle 424 . In a preferred embodiment of the present author, the at least one controller 452 is a programmable logic controller, but does not thereby define the type of the at least one controller 452. It should be noted that in the preferred embodiment of the present invention, the moving speed of the nozzle unit 42 moving together with the moving portion 432, the pressure pressure of the first air pressure source required by the nozzle unit 42 and controlling the A relatively adjustable contrast relationship (such as a specific proportional relationship) between the gas pressures of the liquid paint source is required to achieve optimum spray efficiency. For example, when the nozzle unit 42 and the moving portion 432 are set to move faster by the programmable moving device 43, the air pressure of the first air pressure source required by the nozzle unit 42 and the source of the liquid paint are controlled. The gas pressure needs to be set relatively high by the control device 45 to increase the flow rate of the liquid paint 60 to be sprayed; otherwise, the moving speed of the nozzle unit 42 and the moving portion 432 is set by the programmable moving device 43. The nozzle unit 42 is slower The required air pressure of the first air pressure source and the gas pressure for controlling the liquid paint source need to be set relatively low by the control device 45 to reduce the flow rate of the liquid paint 60 to be sprayed, that is, optimized. The balance required for spray efficiency. Therefore, the nozzle unit 42, the programmable moving device 43, and the control device 45 in the paper-plastic surface coating apparatus 40 can be programmed according to different product sizes and specifications to perform automated production.

In a preferred embodiment of the present invention, the first air pressure source has a pneumatic pressure of less than 250 kPa, preferably 0.2 MPa; and the liquid pressure source for controlling the liquid paint source is less than 300 kPa, preferably 0.1 MPa.

Further, as shown in FIGS. 1 and 2, in the preferred embodiment of the present invention, the nozzle unit 42 further has a first atomizing air pressure inlet 428 for spraying the at least one outward nozzle 424 in an atomized form. The liquid coating material 60 to the at least one surface of the at least one paper-plastic body 1042, and the at least one controller 452 of the control device 45, further adjustably control a first connection to the first atomizing air pressure inlet 428 The pressure of the air pressure of an atomizing air pressure source. In a preferred embodiment of the present invention, the first atomizing air pressure source has a pneumatic pressure greater than 100 kPa but less than 10.42 MPa, preferably 0.1 MPa.

Further, as shown in FIGS. 1 and 2, in the preferred embodiment of the present invention, the nozzle unit 42 further has a plurality of atomizing nozzles 422 and a second atomizing air inlet port 438 which are closer to the periphery of the nozzle unit 42. The plurality of atomizing nozzles 422 can spray the liquid coating material 60 onto the at least one surface of the at least one paper-plastic body 1042 in an atomized form, and can increase the spraying range (or breadth) of spraying the liquid coating material 60. And the at least one controller 452 of the control device 45 further adjusts the pressure of a second atomizing air pressure source connected to the second atomizing air pressure inlet 438. In a preferred embodiment of the present invention, the second atomizing air pressure source has a large air pressure At 150 kPa, preferably 0.3 MPa.

Further, as shown in Figures 1 and 2, in a preferred embodiment of the present invention, the paper product surface coating apparatus 40 further includes a transfer device 48, such as a production line conveyor for movably carrying the The at least one paper-plastic body 1042 of the paper-plastic article 104, 106 is between the paper-plastic article thermoforming apparatus 30 and the paper-plastic article cutting device 50. The paper product surface coating apparatus 40 further includes a sensor 300 for sensing a notification signal to the programmable movement when the conveying apparatus 48 transmits the at least one paper body 1042 to a position for preliminary spraying. The device 43 and/or the control device 45 initiates the spraying operation. In the preferred embodiment, the paper product surface coating apparatus 40 further includes a drying device 46, such as a drying tunnel, for drying the at least one surface of the at least one paper-plastic body 1042 by temperature. The liquid coating 60 forms a hardened and flat bonding layer 60' on the at least one surface of the at least one paper-plastic body 1042 (see Figure 1). In the present embodiment, the drying device 46 has a drying temperature of approximately 100 degrees Celsius, preferably 60 degrees Celsius, and a drying time of 20 seconds.

Referring to Fig. 3, there is shown a partial cross-sectional view taken along line A-A' of the paper-plastic article 106 according to Fig. 2. As shown in Figures 2 and 3, the paper-plastic article 106 is produced by the paper-based product surface coating apparatus 40 (see Fig. 2) of the present invention, and the paper-plastic article 106 includes the above-described preferred embodiments. At least one paper-plastic body 1042 as described in the example, and the paper-plastic product surface coating apparatus 40 sprays the liquid paint 60 on the at least one surface of the at least one paper-plastic body 1042 and is formed by drying and hardening. Bonding layer 60'. By drying and hardening the bonding layer 60', not only the surface of the at least one paper-plastic body 1042 is reduced in dust and dust generation, but also the flatness of the surface of the at least one paper-plastic body 1042 can be improved, and the surface roughness can be reduced. The unevenness problem enhances the external appearance and the overall structural strength, and also enhances the waterproofness of the surface of the at least one paper-plastic body 1042. In the preferred embodiment, the bonding layer 60' has a thickness ranging from 20 to 200 μm and conforms to the standard number of rubbing times of 3 to 50 times under the RCA standard abrasion resistance test of ASTM F-2357-04.

In a practical case, a surface of the bonding layer 60' of the paper-plastic article 106 according to the present invention is subjected to an RCA standard abrasion resistance test in accordance with ASTM F-2357-04, and the test conditions are as follows: Norman Tool The RCA Abrader tester (RCA Abrader) uses a fixed roughness RCA standard to rub the test strip and apply a weight weight (55 g) to the outer surface of the bonded layer 60' of the paper-plastic article 106 to be tested, followed by Speed-rolling the RCA standard friction test paper strip to correspondingly rub the outer surface of the bonding layer 60' of the paper-plastic article 106 while counting the number of rubbings (or number of cycles) between the two until the combination A visually visible wear phenomenon occurs on the surface of layer 60' such as the appearance of fibrous shavings. Using the RCA standard wear test method of the ASTM F-2357-04 specification, the RCA wear tester measures: when the thickness of the bonding layer 60' of the paper-plastic article 106 ranges from 20 to 200 μm , The standard friction number value ranges from 3 to 50 times before wear occurs. In general, an RCA standard friction number value is approximately equal to 10,000 times the number of rubs of a human finger pressing a test object (such as a keyboard button). From this, it was found that the bonding layer 60' of the paper-plastic article 106 produced by the paper-plastic surface coating apparatus 40 of the present invention has excellent abrasion resistance and is less prone to fiber shavings.

Referring to Figure 4, there is shown a partial cross-sectional view of a paper-plastic article 106' according to another preferred embodiment of the present invention, the paper-plastic article 106' comprising: a paper-plastic body 1042 formed on the paper-plastic body A bonding layer 60' on the outer surface of 1042 (see the various embodiments described above) and an ink layer 2020 on the outer surface of the bonding layer 60'. The ink layer 2020 is a solvent-containing ink layer on the surface of the printing plate 90 by a general printing technique (or "solvent transfer" 1130). 2020 is transferred to the bonding layer 60' of a paper-plastic body 1042 by thermal compression; in the preferred embodiment, the printing plate 90 is one of a gravure, a relief, a screen, and a flat plate; Aqueous and oily solvents.

Referring to FIG. 5, a partial cross-sectional view of a paper-plastic article 106" according to another preferred embodiment of the present invention is shown. The paper-plastic article 106" includes a paper-plastic body 1042 formed on the paper-plastic body. A bonding layer 60' on the outer surface of 1042 (see the various embodiments described above) and a surface treatment film 200 on the outer surface of the bonding layer 60'. In the preferred embodiment, the surface treatment film 200 and the paper-plastic article 106" are placed between a mold assembly (not shown), such as a pair of convex molds and concave molds, and are heated and pressurized. The surface treatment film 200 is transferred (or transferred to the substrate 1135) onto the outer surface of the bonding layer 60' of the paper-plastic article 106".

In the preferred embodiment, the surface treatment film 200 mainly comprises: a strippable carrier layer 2060, a release layer 2050 on a surface of the carrier layer 2060, and a release layer. A Hard Coat layer 2040 on one surface of the 2050, at least one ink layer 2020, a decorative layer 2030 between the cured layer 2040 and the at least one ink layer 2020, and an adhesive layer 2010 on the surface One of the outermost surfaces of the processing film 200 is used to adhere the surface treatment film 200 to the bonding layer 60' of the at least one paper-plastic body 1042. The release layer 2050, the cured layer 2040, the decorative layer 2030, the at least one ink layer 2020, and the adhesive layer 2010 are sequentially formed on the lower surface of the carrier layer 2060. After the surface treatment film 200 is adhered to the outer surface of the bonding layer 60' through the adhesive layer 2010, the carrier layer 2060 is processed from the surface of the paper-plastic article 106" by the assistance of the release layer 2050. The cured layer 2040 can be used to protect the at least one ink layer 2020 from the decorative layer 2030.

In the preferred embodiment, the material of the carrier layer 2060 is selected from the group consisting of polyparaphenylene a group or any combination of ethylene formate (PET), polymethyl methacrylate (PMMA), polycarbonate (PC), and polystyrene (PS); preferably, the carrier layer 30 is composed of Made up of polyethylene terephthalate (PET). The thickness of the carrier layer 30 is preferably between 40 μm and 80 μm.

In the present embodiment, the cured layer 2040 can be used as a protective layer, a decorative layer of the texture, and/or a structural layer having an embossed structure, such as a giant embossed structure, a diffraction embossed structure, or a hologram. The cured layer 2040 can be an ultraviolet cured layer or a thermally cured layer. The thermosetting resin contained in the thermosetting layer is cured by heating before transfer. The thermosetting resin may contain, for example, at least one of an epoxy resin, a melamine resin, and a urethane resin, but the present invention is not limited thereto.

In the preferred embodiment, the composition of the at least one ink layer 2020 includes one of a conventional ink, a soy ink, a heat sensitive ink, a pressure sensitive ink, or a conductive ink or a combination thereof. The adhesive layer 201 is composed of a polymer adhesive.

In the preferred embodiment, the decorative layer 2030 further includes a first decorative structure 2033 and a second decorative structure 2035 different from the first decorative structure 2033. In the preferred embodiment, the first decorative structure 2033 is formed with a plurality of three-dimensional structures, such as a concave structure, and arranged in the first decorative structure 2033; however, the three-dimensional structure of the first decorative structure 2033 is not limited thereby. It can be a variety of three-dimensional structures, as long as it can achieve a three-dimensional structure of concentrated or reflective or broken line light. In the preferred embodiment, the second decorative structure 2035 is formed with a plurality of reflective beads-shaped structures; however, the structure in the second decorative structure 2035 is not limited as long as it can achieve concentrated or reflective or broken-line light. The structure is acceptable.

Whether by the print transfer technique 1130 or the fifth figure described in FIG. Substrate (film) transfer technique 1135, transferring the graphic ink onto the outer surface of the bonding layer 60' of the paper-plastic body 1042 of the paper-plastic article 106', 106", the presence of the bonding layer 60' can be flattened The originally rugged outer surface of the paper-plastic body 1042 is used to improve the flatness of the outer surface of the paper-plastic body 1042, thereby avoiding the problem of distortion of printed graphics such as smudges or ink absorbing.

Compared with the prior art, the paper-plastic surface coating apparatus 40 of the present invention can spray the atomized coating 60 on the outer surface of the paper-plastic body 1042 of the paper-plastic product 106, 106' 106" to form a uniform distribution. The bonding layer 60' can not only spray the coating 60 in a large area quickly to save processing time, but also ensure high product yield and quality. The bonding layer 60' is passed through the paper-plastic surface coating apparatus 40 of the present invention. Formed on the outer surface of the paper-plastic body 1042 of the paper-plastic article 106, not only can the surface of the paper-plastic article 106 be reduced in chipping and dust generation, and the surface of the paper-plastic article 106' 106" is mapped. When the printing is performed, the bonding layer 60' is less likely to cause the problem of distortion of the printed image caused by smudge or ink absorbing, and the water repellency of the surface of the paper-plastic article 106 can be enhanced, and the outer surface of the paper-plastic article 106 can be improved. Wear resistance. In other embodiments, the paper product surface coating apparatus 40 can also be disposed independently of the automated production machine described in FIG.

Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make various changes without departing from the spirit and scope of the present invention. Retouching, therefore, the scope of protection of this creation is subject to the definition of the scope of the patent application attached.

Claims (24)

A paper-plastic product surface coating apparatus for performing a coating processing operation on at least one surface of at least one paper-plastic body, comprising: a programmable moving device having a moving portion including a joint end, and programmable control The moving portion moves at a predetermined spray path and/or moving speed relative to the at least one surface of the at least one paper-plastic body; a nozzle unit having at least one outward nozzle, at least one air pressure control valve, and at least one liquid paint inlet Connecting to the at least one outward nozzle, and the nozzle unit is mounted on the joint end of the programmable moving device to move together with the moving portion, the at least one air pressure control valve is configured to control the at least one outward nozzle to spray liquid paint to The at least one surface of the at least one paper-plastic body; and a control device having at least one controller for adjustable control of a pneumatic pressure of a controlled air pressure source connected to the air pressure control valve, and for adjustable control a gas pressure of a liquid paint source connected to the at least one liquid paint inlet of the nozzle unit, thereby further controlling the at least one The flow rate of the liquid paint is sprayed to the outer nozzle. The paper-plastic product surface coating apparatus according to claim 1, wherein the paper-plastic surface coating apparatus is connected to a paper-plastic product hot-pressing apparatus and a paper according to a processing sequence of a wet fiber paper-plastic manufacturing process. Plastic products are cut between the equipment. The paper-plastic product surface coating apparatus according to claim 2, further comprising a conveying device for movably carrying the at least one paper-plastic body to the paper-plastic product hot-pressing device and the paper-plastic product Between the cutting devices, and a sensor for sensing when the at least one paper-plastic body reaches a preliminary spraying position, sending a notification signal to the programmable mobile device and/or the control device to start the spraying operation . The paper-plastic product surface coating apparatus according to claim 1, wherein the programmable movement The device is an electric drive multi-axis linkage robot having a programmable logic controller for programmable control of movement of the moving portion at the predetermined spray path and/or the moving speed. The paper-plastic product surface coating apparatus according to claim 1, wherein the movement speed of the nozzle unit moving together with the moving portion, the pressure pressure of a first air pressure source, and the gas for controlling the liquid paint source A relatively adjustable contrast relationship is established between the pressures to achieve an optimized spray efficiency. The paper-plastic product surface coating apparatus according to claim 5, wherein the first air pressure source has a gas pressure of more than 0.2 MPa, and the gas pressure of the liquid paint source is controlled to be less than 300 kPa. The paper-plastic product surface coating apparatus according to claim 1, wherein the nozzle unit further has a first atomizing air pressure inlet for spraying the liquid coating on the at least one outward nozzle in an atomized form. The at least one surface of the at least one paper-plastic body, and the control device, further adjusts a pressure pressure of a first atomizing air pressure source connected to the first atomizing air pressure inlet. The paper-plastic product surface coating apparatus according to claim 7, wherein the first atomizing air pressure source has a pressure of more than 150 kPa. The paper-plastic product surface coating apparatus according to claim 1, further comprising a drying device for drying the liquid paint sprayed on the at least one surface of the at least one paper-plastic body. The paper-plastic surface coating apparatus of claim 1, wherein the at least one outward nozzle of the nozzle unit maintains a distance range of 20-30 cm for the at least one surface of the at least one paper-plastic body, the at least The outer nozzle has a diameter of about 1.3 mm, and the at least one outer nozzle has a spray width ranging from 200 to 250 mm per time. The paper-plastic surface coating apparatus according to claim 1, wherein the liquid coating has a viscosity in a range of less than 3,500 centipoise (cps) and comprises a compound, a polymer and a copolymer thereof. One or a combination of several. A paper-plastic article comprising the at least one paper-plastic body sprayed in a paper-plastic surface coating apparatus according to any one of claims 1 to 11, and the surface coating device of the paper-plastic product The liquid coating is a bonding layer formed on the at least one surface of the at least one paper-plastic body. The paper-plastic product according to claim 12, wherein when the thickness of the bonding layer ranges from 20 to 200 μm , the RCA standard conforming to ASTM F-2357-04 is subjected to 3 to 50 times of abrasion resistance test. The number of standard frictions. The paper-plastic article of any one of claims 12-13, further comprising an ink layer that is transfer printed onto the bonding layer of the paper-plastic article by a printing plate. The paper-plastic article of claim 14, wherein the printing plate is one of a gravure, a letterpress, a screen, and a flat plate. The paper-plastic article according to any one of claims 12-13, further comprising a surface treatment film on the bonding layer. The paper-plastic article of claim 16, wherein the surface-treating film is transferred to the bonding layer of the paper-plastic article through a mold assembly. The paper-plastic article of claim 17, wherein the surface treatment film comprises: a peelable carrier layer; a release layer on a surface of the carrier layer; and a cured layer located at the periphery a surface of the type layer; at least one ink layer; and an adhesive layer on one of the outermost surfaces of the surface treatment film for adhering to the bonding layer of the paper-plastic article. The paper-plastic article of claim 18, wherein the surface treatment film further comprises: a decorative layer between the cured layer and the at least one ink layer. The paper-plastic article of claim 19, wherein the decorative layer further comprises a first decorative structure and a second decorative structure different from the first decorative structure. The paper-plastic article of claim 20, wherein the first decorative structure forms a plurality of three-dimensional structures and is arranged in the first decorative structure. The paper-plastic article of claim 20, wherein the second decorative structure forms a plurality of reflective bead structures. The paper-plastic article of claim 18, wherein the at least one ink layer comprises one of a conventional ink, a soy ink, a heat-sensitive ink, a pressure-sensitive ink or a conductive ink or a combination thereof. The paper-plastic article of claim 18, wherein the material of the carrier layer is selected from the group consisting of polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), and polycarbonate (PC). And a group or any combination of polystyrene (PS).