TWI659841B - Method for fabricating shaped paper products - Google Patents

Abstract

The invention discloses a method for manufacturing a paper-plastic product, comprising: at least one pulp fishing step to form a wet embryo composed of a pulp material body; at least one pre-pressing step to shallowly press the wet embryo to form a first semi-finished product; at least A hot-press forming step for deep pressing the first semi-finished product to form a second semi-finished product; and a surface coating step for applying a liquid coating to at least one outer surface of the second semi-finished product through a paper-plastic product surface coating device, thereby forming A paper-plastic product with a bonding layer. Through the present invention, high-efficiency automated coating can be performed in a consistent continuous production machine, which not only can save processing time, is beneficial to mass production, but also can always ensure a higher product yield and quality.

Description

Method for manufacturing paper-plastic products

The invention relates to a method for manufacturing a paper-plastic product, in particular to a method for manufacturing a paper-plastic product suitable for automated production.

Due to the prevalence of existing 3C electronic products, their packaging materials such as carton boxes and inner boxes must also have a certain structural strength to protect these 3C electronic products from external impacts. At the same time, the appearance of the packaging materials must be beautiful and exquisite Graphic printing to promote consumer buying desire. In order to achieve the above-mentioned requirements, various paper-plastic manufacturing processes and related production machines using mold components to mass-produce paper-plastic products have been proposed successively.

The existing paper-plastic (or wet-fiber paper molding) process generally uses waste paper and natural plant fibers (such as palm ash, bagasse, bamboo flakes, reeds, etc.) as basic raw materials. The wet fiber slurry is formed, and then through a plurality of related production machines, including: pulping the wet fiber slurry, and then pressing the upper and lower mold components to heat and collect the collected slurry to make the above-mentioned paper. Substrate for plastic products.

However, because 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 prone to dust and dust, which is not good for the environment; (2) In the case of graphic printing on the surface of the paper-plastic product by ink-jet printing, excessive fiber fluff on the surface of the substrate often causes halo or ink absorption, which may cause distortion of printed graphics; (3) Due to the relationship between paper fibers, the flatness of the substrate surface of paper and plastic products is poor, and the problem of unevenness often occurs, which makes its external appearance poor, and it is easy to cause graphic distortion when printing; and (4) paper and plastic products The surface of the substrate is poor in water resistance. Based on this, in some specific requirements, if the characteristics or specifications of the final product are met, the substrate surface of the paper-plastic product needs to be treated in advance; however, the traditional wet-fiber paper-plastic process includes a production machine to produce the paper-plastic. In the case of products, if the substrate (semi-finished product) of the paper-plastic product is required to be coated on the surface, the production process is often interrupted and then processed manually, which not only interrupts the process and reduces the automated production efficiency, but also applies manual coating. The surface of the paper-plastic product can cause unevenness in the coating layer formed, reduce product yield, and make it difficult to ensure quality.

Therefore, it is necessary to provide a method for manufacturing a paper-plastic product to solve the problems of the conventional techniques.

In order to solve the problems of the above-mentioned conventional technology, the main object of the present invention is to provide a method for manufacturing a paper-plastic product, which is particularly suitable for high-efficiency automatic coating of a paper-plastic body in a continuous continuous production machine of a wet fiber paper-plastic manufacturing process. , Not only can save processing time, is conducive to mass production, and at the same time can always ensure high product yield and quality.

Another object of the present invention is to provide a method for manufacturing a paper-plastic product, which is used to form a bonding layer on at least one outer surface of at least one paper-plastic body of the paper-plastic product, and the bonding layer has the following multiple technical benefits: (1) The bonding layer can reduce the chances of chipping and dust generation on the surface of the at least one paper-plastic body to meet environmental protection standards; (2) when performing inkjet graphic printing, the bonding layer of the at least one paper-plastic body is unlikely to cause The problem of distortion of printed graphics caused by smearing or ink absorption; (3) The bonding layer can improve the flatness of the outer surface of the at least one paper-plastic body, reduce the occurrence of surface unevenness, and enhance the aesthetics of the exterior. (4) the bonding layer can strengthen the at least one paper-plastic body And (5) the bonding layer can enhance the abrasion resistance of the outer surface of the paper-plastic product.

In order to achieve the above object, a preferred embodiment of the present invention provides a method for manufacturing a paper-plastic product, including the following steps: at least one pulp fishing step, including using one of a first upper mold and a first lower mold A mold collects a pulp fiber body containing wet fibers in a pulp tank, and further forms a wet embryo composed of the pulp material body between the first upper mold and the first lower mold; at least one pre-compression step includes The first upper mold and the first lower mold are pressed against each other to pressurize the wet embryo, and a part of the moisture and / or moisture contained in the wet embryo is discharged to form a first semi-finished product. ; At least one hot-press forming step, including placing the first semi-finished product between a second upper mold and a second lower mold, and pressing the second upper mold and the second lower mold to each other to press against the first Half of the finished product is hot-pressed, and a part of the water vapor and / or moisture contained in the first semi-finished product is discharged to form a second semi-finished product; and a surface coating step is performed by a paper-plastic product surface coating equipment At least one paper-plastic body of the second semi-finished product Coating an outer surface of a liquid coating, thereby forming a binding layer having a paper and plastic article.

In a preferred embodiment of the present invention, the surface coating step further includes: using a conveying device to move the second semi-finished product to the paper-plastic product surface coating device movably.

In a preferred embodiment of the present invention, the surface coating step further includes: when at least one sensor detects that the second semi-finished product reaches a position ready for spray coating, the at least one sensor sends a notification signal to The programmable moving device and / or the control device to start the spraying operation.

In a preferred embodiment of the present invention, the paper-plastic product surface coating equipment includes: a programmable moving device having a moving part, a nozzle unit provided in the moving part, and a control device, and the surface is coated The steps also include: when the moving unit drives the nozzle unit together, When the programmed movement is on a predetermined spray path and / or moving speed relative to the at least one surface of the at least one paper-plastic body, the nozzle unit atomizes and sprays the liquid paint to the at least one through adjustable control of the control device. The at least one surface of the paper-plastic body.

In a preferred embodiment of the present invention, the surface coating step further includes: drying the liquid paint sprayed on the at least one surface of the at least one paper-plastic body of the second semi-finished product at a temperature by a drying device. To form the bonding layer of the paper-plastic product.

In a preferred embodiment of the present invention, the at least one paper-plastic body of the second semi-finished product has a three-dimensional three-dimensional structure.

In a preferred embodiment of the present invention, the components of the liquid coating include hydrofluoroether and fluorine compounds.

In a preferred embodiment of the present invention, the components of the liquid coating include styrene-acrylate copolymer, polyethylene wax, water, butyl acetate, and amine antioxidant.

In a preferred embodiment of the present invention, when the thickness of the bonding layer ranges from 20 to 200 μm , the bonding layer complies with the 3 to 50 times of the RCA standard abrasion test according to ASTM F-2357-04. Number of frictions.

In a preferred embodiment of the present invention, the method for manufacturing a paper-plastic product further includes: transferring and printing an ink layer onto the bonding layer of the paper-plastic product through a printing plate, wherein the printing plate is a gravure or a relief , Screen, and tablet.

In a preferred embodiment of the present invention, the method for manufacturing a paper-plastic product further includes: transferring a surface treatment film to the bonding layer through a mold component.

In a preferred embodiment of the present invention, the surface treatment film includes: a peelable carrier layer; a release layer on a surface of the carrier layer; a curing layer on the release layer A decorative layer on a surface of the curing layer; at least one ink layer; and an adhesive layer on one of the outermost surfaces of the surface treatment film for sticking to the paper and plastic The bonding layer of the article.

In a preferred embodiment of the present invention, the method for manufacturing a paper-plastic product further includes a cutting step of cutting the paper-plastic product using a die to form a paper-plastic product.

Compared with the prior art, the method for manufacturing a paper-plastic product according to the present invention is particularly suitable for performing a rapid and large-area spray atomizing coating on the surface of a paper-plastic body to form a uniform production machine in a wet fiber paper-making process. A uniformly distributed bonding layer can save processing time and ensure high product yield and quality; in addition, the bonding layer formed on the outer surface of the paper-plastic body can not only reduce chipping on the surface of the paper-plastic body and The chance of generating dust, can improve the flatness of the surface of the paper-plastic body, reduce the problem of unevenness on the surface, and enhance the aesthetics of the exterior; at the same time, when the graphics are printed on the bonding layer, the bonding layer is not easy The problem of distortion of printed graphics caused by smearing or ink absorption can also enhance the waterproofness of the surface of the paper-plastic body.

20‧‧‧Pulping and pre-pressing equipment

22‧‧‧The first upper mold

24‧‧‧The first mold

26‧‧‧Pulp trough

28‧‧‧ Pulp

30‧‧‧Paper-plastic products hot-press forming equipment

32‧‧‧Second upper mold

34‧‧‧The second mold

40‧‧‧Paper and plastic products surface coating equipment

42‧‧‧ Nozzle Unit

43‧‧‧ programmable mobile device

45‧‧‧Control device

46‧‧‧ drying device

48‧‧‧ transmission equipment

50‧‧‧paper and plastic products cutting equipment

60‧‧‧Liquid coating

60’‧‧‧Combination layer

90‧‧‧Print

100‧‧‧ Pulp material body

102‧‧‧The first semi-finished product

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

106‧‧‧ The third semi-finished product (or paper-plastic product)

106 ’, 106” ‧‧‧paper and plastic products

108‧‧‧ finished products

200‧‧‧ surface treatment film

300‧‧‧ Sensor

320‧‧‧Pressure Storage Tank

413‧‧‧ Programmable Logic Controller

422‧‧‧Atomizing nozzle

424‧‧‧ at least one outward nozzle

426‧‧‧at least one air pressure control valve

428‧‧‧The first atomizing pressure inlet

430‧‧‧at least one liquid paint inlet

438‧‧‧Second atomizing air pressure inlet

432‧‧‧Mobile

452‧‧‧at least one controller

1130‧‧‧Solvent transfer

1135‧‧‧ substrate transfer

1042‧‧‧paper-plastic body

2010‧‧‧Adhesive layer

2020‧‧‧Ink layer

2030‧‧‧Decoration layer

2040‧‧‧cured layer

2050‧‧‧Release layer

2060‧‧‧ Carrier layer

2033‧‧‧First decorative structure

2035‧‧‧Second decorative structure

X‧‧‧ center axis

S100 ~ S160‧‧‧ are steps

FIG. 1 is a schematic diagram of components of a paper-plastic product surface coating apparatus according to a preferred embodiment of the present invention. The paper-plastic product surface coating apparatus is configured in a related automated production machine according to one of the wet fiber paper-plastic manufacturing processes. Between; Figure 2 shows a schematic view of the detailed components of the paper-plastic product surface coating equipment according to Figure 1; Figure 3 is a partial cross-sectional view showing the A-A 'cut line on the paper-plastic product according to Figure 2, Wherein the paper-plastic product is made by the paper-plastic product surface coating equipment according to the preferred embodiment of the present invention; FIG. 4 shows a partial cross-sectional view of a paper-plastic product according to another preferred embodiment of the present invention, in which ink is transferred to a bonding layer of a paper-plastic body through a printing plate; FIG. 5 shows a paper-plastic product according to the present invention. A partial cross-sectional view of a paper-plastic product according to another preferred embodiment, in which the surface treatment film is transferred to a bonding layer of a paper-plastic body; FIG. 6 shows the manufacture of a paper-plastic product according to a preferred embodiment of the present invention Method flow chart; FIG. 7 shows a flow chart of the detailed steps included in the surface coating step of a method for manufacturing a paper-plastic product according to a preferred embodiment of the present invention; FIG. 8A shows a flow chart according to the present invention FIG. 8B is a flowchart showing steps of a method for manufacturing a paper-plastic product according to another preferred embodiment of the present invention; and FIG. 8B is a flowchart showing steps of a method for manufacturing a paper-plastic product according to another preferred embodiment of the present invention.

The embodiments described in detail below with reference to the drawings will make the advantages and features of the present invention and the method for achieving these advantages and features more clear. However, the present invention is not limited to the embodiments disclosed below. The present invention can be implemented in various ways different from each other. The embodiments disclosed below are only used to make the disclosure of the present invention more complete and to help the present invention belong. Those skilled in the art can fully understand the scope of the present invention, and the present invention is defined according to the scope of patent application. Throughout the description, the same reference numerals denote the same structural elements.

Please refer to FIG. 1, which is a schematic diagram showing components of a paper-plastic product surface coating apparatus 40 according to a preferred embodiment of the present invention. The paper-plastic product surface coating apparatus 40 is configured according to a wet fiber paper-plastic manufacturing process. Consistency among related automated production machines. Under wet fiber The paper-making process is one of the related automatic production machines, which mainly includes a pulp-receiving and pre-pressing equipment 20, a paper-plastic product hot-press molding equipment 30, the paper-plastic product surface coating equipment 40, and a paper-plastic product cutting equipment 50, wherein the pulp-removing and pre-pressing device 20 provides a first lower mold 24 to collect a wet fiber-containing pulp material body 100 in a pulp tank 26 containing a pulp 28, and further to the first lower mold A wet embryo (not shown) composed of the pulp material body 100 is formed on the upper surface of the mold 24; however, the fishing and pre-pressing component structure for collecting the fiber-containing pulp material body 100 is not limited thereto; in other embodiments The wet embryo may be formed on the surface of the first upper mold 22 instead. Next, pressurize the pre-clamping mold between a first upper mold 22 and the first lower mold 24 to slightly compact the wet embryo, and form a vacuum environment between the two molds 22 and 24 by extracting air. A part of the moisture and / or moisture contained in the wet embryo is discharged, thereby forming a first semi-finished product 102. The paper-plastic product hot-press forming device 30 provides a second upper mold 32 and a second lower mold 34 to be pressed against each other to further compact the first semi-finished product 102 and discharge a portion of the first semi-finished product 102. Water vapor and / or moisture, thereby forming a dried second semi-finished product 104; however, it is not limited to only one hot-press forming device 30 for hot-press forming or only pressing once; in other embodiments, It is possible to add several hot-press forming equipment to perform pre-pressing and hot-press forming operations in sections, or to perform pre-pressing and hot-press forming operations in the same hot-press forming equipment 30 times. In the preferred embodiment, the paper-plastic product surface coating device 40 is connected to the paper-plastic product hot-press molding device 30 and the paper-plastic product cutting device 50 according to the processing order of the wet fiber paper-plastic process. It is used to perform the coating operation of the liquid paint 60 on the at least one outer surface of the at least one paper-plastic body 1042 made of fibers in the second semi-finished product 104 (the detailed structure will be described later in detail) to facilitate the subsequent formation of a surface bonding Third semifinished product 106 of layer 60 '. The paper-plastic product cutting device 50 cuts the third semi-finished product 106 using a die to form a paper-plastic finished 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 in The following descriptions are commonly referred to as a "paper 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 product in other applications or needs; in other embodiments, According to the demand for different paper and plastic products, the processing order of the paper and plastic product surface coating apparatus 40 may be reconfigured before the paper and plastic product hot-press forming apparatus 30 or after the paper and plastic product cutting apparatus 50.

In other embodiments, the paper-plastic body 1042 of the paper-plastic product 106 of the present invention can also be mass-produced by other conventional paper-plastic molding techniques. In fact, it is only necessary to integrate various large-scale manufacturing machines required for the conventional paper-plastic molding technology with the paper-plastic product surface coating equipment 40 to configure the same automated production line. The shape of the paper-plastic product 106 can be molded into various three-dimensional three-dimensional geometric structures, such as a box-shaped body, a cube, a triangle, a rectangular parallelepiped, a trapezoid, a cone, a column, and the like, and are not particularly limited.

Please further refer to the paper-plastic product surface coating apparatus 40 according to the preferred embodiment of the present invention as shown in FIG. 1 and FIG. 2. The main components include a nozzle unit 42, a programmable moving device 43, and a control unit.装置 45。 Device 45. Through the control of the nozzle unit 42, the programmable moving device 43 and the control device 45 of the paper-plastic product surface coating equipment 40 of the present invention, it is possible to quickly spray the large-area sprayed coating material 60 on a large area. The paper-plastic body 1042 on the outer surface of the paper-plastic body 104 saves processing time, thereby forming a uniformly distributed bonding layer 60 ', ensuring higher product yield and quality.

The programmable moving device 43 has a moving portion 432 including a joint end for releasably connecting the nozzle unit 42. The joint end may be a conventional mechanism such as a clamping member, a buckle member or a screw member. In this embodiment, the programmable mobile device 43 is an electric drive multi-axis connection robot arm, which has a plurality of mechanical joints, a programmable logic controller 413, and a servo. Mechanism (not shown), the programmable logic controller 413 is used to programmatically control the moving part 432 to move to a predetermined spray path and / or move relative to the at least one surface of the at least one paper-plastic body 1042 Speed, the robotic arm is articulated using the plurality of mechanisms to allow the moving portion 432 to move in a planar or three-dimensional space or linearly. In addition, the moving part 432 can also rotate around a central axis X passing through one of the mechanism joints, thereby driving the nozzle unit 42 to increase the swing angle to increase the spraying range.

The nozzle unit 42 has at least one outward spray head 424, at least one air pressure control valve 426, and at least one liquid paint inlet 430. The nozzle unit 42 is fluidly connected to the at least one outward spray head 424. The nozzle unit 42 is mounted on the programmable moving device 40. The joint end is further moved along with the moving part 432 in the predetermined spray path and / or moving speed. The at least one air pressure control valve 426 is used to control the at least one outward spray head 424 to spray the liquid paint 60 outward to the at least one. On the at least one surface of the paper-plastic body 1042. In this preferred embodiment, the at least one outward nozzle 424 of the nozzle unit maintains a distance range of 20-30 cm, preferably 26 cm, with the at least one surface of the at least one paper-plastic body 1042; when the at least one outward nozzle The caliber of 424 is about 1.3 mm, and the spraying width of the at least one outward spraying head 424 is 200-250 mm / time; but in another preferred embodiment of the present invention, when the caliber of the at least one outward spraying head 424 is about 1.3 mm The spraying width range of the at least one outward spraying head 424 is 250 ~ 270mm / each time; but in another preferred embodiment of the present invention, when the diameter of the at least one outward spraying head 424 is about 1.1mm, the at least one outward spraying head 424 is The spraying width range of 424 is 150 ~ 170mm / time; however, it should be noted that the description of the above preferred embodiments does not therefore define the patent scope of the present invention, because with the type of the at least one outward spraying head 424, Different, its structure and its setting parameters (such as spray width range) will also vary. In the preferred embodiment, the viscosity range of the liquid coating 60 is less than 3,500 centipoise (cps), but it does not define the patent of the present invention. range.

The liquid coating material 60 of the present invention includes one of a compound, a polymer, and a copolymer or a combination of several of them. For example, in a preferred embodiment of the present invention, the components of the liquid coating 60 include hydrofluoroether (content is 90% to 99% by weight (wt%)) and fluorine compounds (content is 1% to 10). Weight percent concentration (wt%)). In another preferred embodiment of the present invention, the components of the liquid coating 60 include styrene-acrylate copolymer (content about 28% by weight (wt%)), polyethylene wax (content about 2% by weight) Percent concentration (wt%)), and water, butyl acetate, and amine antioxidants (content is about 70% by weight (wt%)); however, the above chemical composition and content are not limited to the present invention. The scope of protection is claimed, because in other embodiments, the present invention can also use the liquid paint 60 with different components and different contents.

As shown in the directional arrows shown in FIG. 2, the control device 45 provides a specified gas pressure to a pressure storage tank 320 storing the liquid paint 60, and further causes the pressure storage tank 320 to convey a liquid paint source with hydraulic pressure to the 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 adjusting and controlling the air pressure of a control air pressure source connected to the air pressure control valve 426, and for The gas pressure of a liquid paint source fluidly connected from the pressure storage tank 320 to the at least one liquid paint inlet 430 of the nozzle unit 42 can be controlled, and the flow rate of the at least one outward spray head 424 spraying liquid paint can be controlled. . In a preferred embodiment of the present invention, the at least one controller 452 is a programmable logic controller, but the type of the at least one controller 452 is not limited thereto. It should be noted that, in a preferred embodiment of the present invention, the moving speed of the nozzle unit 42 and the moving portion 432, the pressure of the first pneumatic source required by the nozzle unit 42, and the control of the moving speed The gas pressure of the liquid paint source needs to achieve a relatively adjustable contrast relationship (such as a specific proportional relationship) to achieve the most Optimized spraying efficiency. For example, when the nozzle unit 42 and the moving part 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 liquid paint source are controlled The gas pressure needs to be set relatively high by the control device 45 to increase the flow rate of the sprayed liquid paint 60; otherwise, when the moving speed of the nozzle unit 42 and the moving portion 432 is set by the programmable moving device 43 When the temperature is relatively slow, the air pressure of the first air pressure source required by the nozzle unit 42 and the gas pressure of controlling the liquid paint source need to be set relatively low by the control device 45 to reduce the spraying of the liquid paint 60. Flow, which is the balance needed to achieve optimum spray efficiency. Therefore, the nozzle unit 42, the programmable moving device 43, and the control device 45 in the paper-plastic product 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 air pressure of the first air pressure source is less than 250kpa, preferably 0.2Mpa; the gas pressure of controlling the liquid paint source is less than 300kpa, preferably 0.1Mpa, but in other embodiments As the type of the at least one outward spraying head 424 is different, its structure and its setting parameters (such as the pressure of each gas) will also be different, which does not limit the patent scope of the present invention.

As further shown in FIGS. 1 and 2, in a 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 spraying head 424 in atomized form. The liquid paint 60 is on 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 is further adjustable to control a first connection to the first atomizing air pressure inlet 428. Air pressure from an atomizing air source. In a preferred embodiment of the present invention, the air pressure of the first atomizing air pressure source is greater than 100kpa but less than 10.42Mpa, preferably 0.1Mpa, but in other embodiments, with the at least one outward spraying head 424, Kind of At the same time, its structure and its setting parameters (such as the pressure of each gas) will also be different, which does not limit the patent scope of the present invention.

As further shown in FIGS. 1 and 2, in a preferred embodiment of the present invention, the nozzle unit 42 further has a plurality of atomizing nozzles 422 and a second atomizing air pressure inlet 438 closer to the periphery of the nozzle unit 42. The spray nozzles 422 can spray the liquid coating 60 onto the at least one surface of the at least one paper-plastic body 1042 in an atomized form, and can also increase the spraying width (or breadth) of the liquid coating 60. ), And the at least one controller 452 of the control device 45 is further adjustable to control the air 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 air pressure of the second atomizing air pressure source is greater than 150kpa, preferably 0.3Mpa, but in other embodiments, as the type of the at least one outward spray head 424 is different, Its structure and its setting parameters (such as the pressure of each gas) will also be different, which does not limit the patent scope of the present invention.

As further shown in Figures 1 and 2, in a preferred embodiment of the present invention, the paper-plastic product surface coating device 40 further includes a conveying device 48, such as a conveyor belt for a production line, which is used to move the load The at least one paper-plastic body 1042 of the paper-plastic products 104, 106 is located between the paper-plastic product hot-press forming device 30 and the paper-plastic product cutting device 50. The paper-plastic product surface coating device 40 further includes a sensor 300 for detecting when the conveying device 48 transmits the at least one paper-plastic body 1042 to a position ready for spraying, and sends a notification signal to the programmable movement. The device 43 and / or the control device 45 start the spraying operation. In the present preferred embodiment, the paper-plastic product surface coating device 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 sprayed at a 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 FIG. 1). As shown). In this embodiment, the drying temperature of the drying device 46 is close to 100 degrees Celsius, preferably 60 degrees Celsius, and the drying time is 20 seconds; however, the scope of protection of the present invention is not limited because in other embodiments, the present invention The invention can also use the drying device 46 with different specifications.

Please refer to FIG. 3 further, which is a partial cross-sectional view showing the AA ′ cut line on the paper-plastic product 106 according to FIG. 2. As shown in Figs. 2 and 3, the paper-plastic product 106 is produced by the paper-plastic product surface coating equipment 40 (see Fig. 2) of the present invention. The paper-plastic product 106 includes the above-mentioned preferred implementations. The at least one paper-plastic body 1042 described in the example, and the paper-plastic product surface coating device 40 spraying the liquid paint 60 on the at least one surface of the at least one paper-plastic body 1042 and formed by drying and hardening Bonding layer 60 '. By drying and hardening the bonding layer 60 ', not only can the opportunities for chipping and dust generation on the surface of the at least one paper-plastic body 1042 be effectively reduced, but the flatness of the surface of the at least one paper-plastic body 1042 can be improved, and the surface unevenness can be reduced. The problem of unevenness enhances the external aesthetics and the overall structural strength, and also enhances the waterproofness of the surface of the at least one paper-plastic body 1042. It can be known that the present invention can use the liquid paint 60 with different components and different contents, as long as the liquid paint 60 can achieve the following technical benefits: when the thickness of the bonding layer 60 ′ formed by the liquid paint 60 When the range is 20 ~ 200 μm , the bonding layer 60 ′ conforms to the standard RCA abrasion test of ASTM F-2357-04 for 3 to 50 standard rubbing times.

In a practical case, the surface of the bonding layer 60 'of a paper-plastic product 106 according to the present invention is subjected to an RCA standard abrasion test in accordance with ASTM F-2357-04. The test conditions are as follows: The RCA Abrader uses a fixed-roughness RCA standard friction test paper tape and applies a weight weight (55g) of pressure to the outer surface of the bonding layer 60 'of the paper-plastic product 106 to be tested. Speed-roll the RCA standard friction test paper tape to rub the outer surface of the bonding layer 60 'of the paper-plastic product 106 correspondingly, and simultaneously count the number of frictions (or number of cycles) between the two until the bonding Visual abrasion appears on the surface of layer 60 'such as the appearance of fiber fluff. Using the RCA standard abrasion test method specified in ASTM F-2357-04, the RCA abrasion tester measured: when the thickness of the bonding layer 60 'of the paper-plastic product 106 is in the range of 20 to 200 μm , it is measured The standard rubbing frequency value range is from 3 to 50 times before the abrasion phenomenon occurs. Generally speaking, a RCA standard rubbing value is approximately equal to 10,000 times that a human finger presses a test object (such as a keyboard key). It can be found that the bonding layer 60 'of the paper-plastic product 106 produced by the paper-plastic product surface coating apparatus 40 of the present invention has excellent abrasion resistance and is not prone to fuzz.

Please refer to FIG. 4, which is a partial cross-sectional view of a paper-plastic product 106 ′ according to another preferred embodiment of the present invention. The paper-plastic product 106 ′ includes a paper-plastic body 1042 and a paper-plastic body. A bonding layer 60 'on the outer surface of 1042 (see previous embodiments) and an ink layer 2020 on the outer surface of the bonding layer 60'. The ink layer 2020 is printed by a general printing technique (also referred to as "solvent transfer" 1130) using a printing plate 90 as a medium, and the solvent-containing ink layer 2020 on the surface of the printing plate 90 is transferred to a paper and plastic by means of heat and pressure. On the bonding layer 60 'of the main body 1042; in the preferred embodiment, the printing plate 90 is one of gravure, letterpress, screen, and flat plate; and the solvent is an aqueous and oily solvent.

Please refer to FIG. 5, which is a partial cross-sectional view of a paper-plastic product 106 ″ according to another preferred embodiment of the present invention. The paper-plastic product 106 ″ includes; a paper-plastic body 1042; 1042 A bonding layer 60 'on the outer surface (see the previous embodiments) 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 product 106 "are placed between a mold assembly (not shown), such as a pair of convex molds and concave molds, and subjected to a heat pressing method. Transfer the surface treatment film 200 (or substrate transfer 1135) to On the outer surface of the bonding layer 60 'of the paper-plastic product 106 ".

In the preferred embodiment, the surface treatment film 200 mainly includes: a peelable 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 a surface of 2050, at least one ink layer 2020, a decorative layer 2030 located 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 treatment 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 curing layer 2040, the decoration 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 assisted from the surface treatment of the paper-plastic product 106 "with the assistance of the release layer 2050. The film 200 is peeled off, and the curing layer 2040 can protect the at least one ink layer 2020 and the decoration layer 2030.

In the preferred embodiment, the material of the carrier layer 2060 is selected from the group consisting of polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), polycarbonate (PC), and polystyrene ( PS) group or any combination; preferably, the carrier layer 30 is made of polyethylene terephthalate (PET), and the thickness of the carrier layer 30 is preferably between 40 μm and 80 μm. However, this does not define the patent scope of the present invention.

In this embodiment, the cured layer 2040 can be used as a protective layer, a texture decorative layer, and / or a structural layer (the structural layer has a relief structure, such as a giant-view relief structure, a diffraction relief structure, or a hologram). The curing layer 2040 may be an ultraviolet curing layer or a heat curing layer. The thermosetting resin contained in this thermosetting layer is hardened by heating before transfer. The thermosetting resin may include, for example, epoxy resin, melamine resin, and urethane resin. At least one; however, the patent scope of the present invention is not thus defined.

In the preferred embodiment, the composition of the at least one ink layer 2020 includes one of a traditional ink, a soybean ink, a heat-sensitive ink, a pressure-sensitive ink, or a conductive ink, or a combination thereof, and the adhesive layer 201 It is composed of a polymer adhesive; however, the patent scope of the present invention is not limited thereby.

In this preferred embodiment, the decoration layer 2030 further includes a first decoration structure 2033 and a second decoration structure 2035 different from the first decoration structure 2033. In the preferred embodiment, a plurality of three-dimensional structures such as a concave structure are formed in the first decorative structure 2033 and arranged in the first decorative structure 2033; however, the three-dimensional structure of the first decorative structure 2033 is not limited, It can be a variety of three-dimensional structures, as long as it can achieve three-dimensional structure of condensing or reflecting or polyline light. In the present preferred embodiment, a plurality of reflective bead structures are formed in the second decorative structure 2035; however, the structure in the second decorative structure 2035 is not limited as long as it can achieve light collection or reflection or polyline light. Structure is acceptable.

Regardless of whether the printing transfer technology 1130 shown in FIG. 4 or the substrate (film) transfer technology 1135 shown in FIG. 5 is used, the graphic ink is transferred to the paper-plastic body of the paper-plastic product 106 ′, 106 ”. On the outer surface of the bonding layer 60 'of 1042, the presence of the bonding layer 60' can flatten the originally uneven outer surface of the paper-plastic body 1042, thereby improving the flatness of the outer surface of the paper-plastic body 1042 and avoiding smudges. Distortion of printed graphics such as ink absorption occurs.

Please refer to FIG. 6, which is a flowchart illustrating steps of a method for manufacturing a paper-plastic product according to a preferred embodiment of the present invention. Since the manufacturing method of the paper-plastic product of the present invention is applied to a consistent continuous production machine of the wet fiber paper-plastic manufacturing process shown in Figs. 1 and 2, the paper-plastic product manufacturing method of the present invention is used Each element structure and element For the functions, please refer to the description of each embodiment with reference to Figs. 1-5, which will not be described in detail below. The method for manufacturing a paper-plastic product includes the following steps: at least one pulp fishing step S100, which includes using both the pulp fishing and the first upper mold 22 and the first lower mold 24 (see FIG. 1) of the pre-pressing device 20 One of the molds collects a pulp fiber body 100 containing wet fibers in a pulp tank 26 containing the pulp 28, and further forms a wet material composed of the pulp material body 100 between the first upper mold 22 and the first lower mold 24. Embryo; at least one pre-pressing step S110, comprising using the pulp fishing and pre-pressing equipment 20 to press the first upper mold 22 and the first lower mold 24 to each other to perform shallow pressure clamping on the wet embryo, Then, a part of the moisture and / or moisture contained in the wet embryo is discharged to form a first semi-finished product 102; however, it should be noted that in other embodiments, the execution of the at least one pre-pressing step S110 may be performed. The wet embryo is lightly press-clamped by different equipment, so the invention is not limited to the first upper mold 22 and the first lower mold 24 of the pulp fishing and pre-pressing equipment 20 to pre-press the Wet embryo; at least one hot-press forming step S120, including placing the first semi-finished product 102 on the paper-plastic product to hot-press Between the second upper mold 32 and the second lower mold 34 (see FIG. 1) of the molding apparatus 30, and then the second upper mold 32 and the second lower mold 34 are pressed against each other to the first semi-finished product. 102 performs deep hot-press molding, and then discharges part of the moisture and / or moisture contained in the first semi-finished product 102 to form a second semi-finished product (or paper-plastic product) 104; however, it should be noted that In other embodiments, at least one hot-press forming step S120 may include several times of hot-press forming steps of different depths, and the several times of hot-press forming steps of different depths may be performed by the same paper-plastic product hot-press forming device 30 or by Several paper-plastic products hot-press forming equipment are executed separately, so the scope of protection of the present invention is not limited. In a preferred embodiment of the present invention, the at least one paper-plastic body 1042 of the second semi-finished product 104 is a three-dimensional structure. , Such as box, cube, triangle, cuboid, ladder The shape, cone, column, etc. are not particularly limited; and the surface coating step S130, at least one of the second semi-finished product 104 is performed by the paper-plastic product surface coating equipment 40 as shown in FIGS. 1 and 2. At least one outer surface of the paper-plastic body 1042 is coated with a liquid coating 60 to form a third semi-finished product 106 (or paper-plastic product) having a bonding layer 60 '; it should be noted that the first semi-finished product 102, the second The semi-finished product 104 and the third semi-finished product 106 are collectively referred to as a "paper-plastic product" in the following description. In other embodiments, the "paper-plastic product" is not limited to a semi-finished product because it is used in other applications or customer requirements. On the other hand, it can also be used as a finished product.

Please refer to FIG. 7, which shows a flowchart of several detailed steps included in the surface coating step S130 of a method for manufacturing a paper-plastic product according to a preferred embodiment of the present invention. In a preferred embodiment of the present invention, the surface coating step S130 further includes: step S132, using the conveying device 48 as shown in FIG. 1 to move the second semi-finished product 104 to the surface of the paper-plastic product. The coating device 40 performs a spraying operation; however, the present invention is not limited thereto, because in other embodiments, step S132 may be omitted according to different applications or configurations.

As shown in FIG. 7, in a preferred embodiment of the present invention, the paper-plastic product surface coating apparatus 40 is applied according to the preferred embodiment of the present invention shown in FIGS. 1 and 2. Step S130 further includes: Step S134, that is, when the at least one sensor 300 senses that the second semi-finished product 104 (such as the movable bearer via the conveying device 48 described above) reaches a pre-painting position, the at least one sensor The tester 300 sends a notification signal to the programmable mobile device 43 and / or the control device 45 to start the spraying operation; however, the invention is not limited thereto, because in other embodiments, step S134 may be omitted according to different applications or configurations. .

As shown in FIG. 7, in a preferred embodiment of the present invention, the paper-plastic product surface coating apparatus 40 is applied according to the preferred embodiment of the present invention shown in FIGS. 1 and 2. Step S130 further includes step S136, that is, when the programmable mobile device 43 and / or the control device 45 of the paper-plastic product surface coating device 40 receives the notification signal to enable the mobile unit 432 to drive the nozzle unit 42 The nozzle unit 42 atomizes and sprays the liquid through a programmable spray path and / or a moving speed relative to the at least one surface of the at least one paper-plastic body 1042 that are programmable together. The paint 60 is applied to the at least one surface of the at least one paper-plastic body 1042. The control device 45 can adjust and control the air pressure of the first air pressure source of the nozzle unit 42 and the gas pressure of the liquid paint 60 to atomize and spray the liquid paint 60 to the at least one paper-plastic body 1042. On at least one surface. In a preferred embodiment of the present invention, the air pressure of the first air pressure source is less than 250kpa, preferably 0.2Mpa; the gas pressure of the liquid coating 60 is controlled to be less than 300kpa, preferably 0.1Mpa, but the present invention is not limited thereto The scope of protection is claimed, because in other embodiments, the present invention can also use the nozzle unit 42 with different specifications or different structures, such as having multiple outward nozzles 422,424 and / or multiple atomizing air pressure inlets 428,438 (such as 1 and 2) to adjust the atomizing spray flow of the liquid paint 60. It should be noted that, in a preferred embodiment of the present invention, the moving speed of the nozzle unit 42 and the moving portion 432, the pressure of the first pneumatic source required by the nozzle unit 42, and the control of the moving speed The gas pressure of the liquid paint source needs to achieve a relatively adjustable contrast relationship (such as a specific proportional relationship) to achieve the optimal spraying efficiency. For example, when the nozzle unit 42 and the moving part 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 liquid paint source are controlled The gas pressure needs to be set relatively high by the control device 45 to increase the flow rate of the sprayed liquid paint 60; otherwise, when the moving speed of the nozzle unit 42 and the moving portion 432 is set by the programmable moving device 43 Slower, the nozzle unit 42 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 in order to reduce the flow rate of the liquid paint 60 to be sprayed, which can achieve an optimized The balance needed for spray efficiency.

In a preferred embodiment of the present invention, the components of the liquid coating 60 include hydrofluoroether (content is 90% to 99% by weight (wt%)) and fluorine compounds (content is 1% to 10% by weight) (wt%)). In another preferred embodiment of the present invention, the components of the liquid coating 60 include styrene-acrylate copolymer (content about 28% by weight (wt%)), polyethylene wax (content about 2% by weight) Percent concentration (wt%)), and water, butyl acetate, and amine antioxidants (content is about 70% by weight (wt%)); however, the above chemical composition and content are not limited to the present invention. The scope of protection is claimed, because in other embodiments, the present invention can also use the liquid paint 60 with different ingredients and different contents, as long as the liquid paint 60 can achieve the following technical benefits: When the liquid paint 60 forms the When the thickness of the bonding layer 60 'ranges from 20 to 200 μm , the bonding layer 60' meets the standard friction number of 3 to 50 under the RCA standard abrasion test according to ASTM F-2357-04. Generally speaking, a RCA standard rubbing value is approximately equal to 10,000 times that a human finger presses a test object (such as a keyboard key). From this, it can be found that the bonding layer 60 'of the paper-plastic product 106 manufactured by the paper-plastic product manufacturing method of the present invention has excellent abrasion resistance and is not prone to fuzz.

As shown in FIG. 7, in a preferred embodiment of the present invention, the surface coating step S130 further includes: Step S138, through the paper-plastic product surface coating apparatus 40 shown in FIGS. 1 and 2. The drying device 46 dries the liquid coating 60 sprayed on the at least one surface of the at least one paper-plastic body 1042 of the second semi-finished product 104 at a temperature to form the third semi-finished product 106 (or paper-plastic product). Bonding layer 60 '. In the preferred embodiment, the drying temperature of the drying device 46 It is close to 100 degrees Celsius, preferably 60 degrees Celsius, and the drying time is 20 seconds. However, the scope of protection of the present invention is not limited, because in other embodiments, the drying device 46 with different specifications can also be used in the present invention.

As shown in FIG. 6, in a preferred embodiment of the present invention, the method for manufacturing a paper-plastic product further includes: after performing the surface coating step S130, performing a cutting step S140, that is, cutting with a die. The third semi-finished product 106 (or paper-plastic product) is cut to form a paper-plastic product; however, in other embodiments, according to the demand for different paper-plastic products, the execution order of the surface coating step S130 may be changed to earlier than Before the at least one hot-press forming step S120 or after the cutting step S140 is changed.

As shown in FIGS. 4 and 8A, in another preferred embodiment of the present invention, the method for manufacturing a paper-plastic product further includes: step S150, passing the ink layer 2020 shown in FIG. 4 through a printing plate 90 Transfer printing to the bonding layer 60 'of the paper-plastic product, wherein the printing plate 90 is one of a gravure, a relief, a screen, and a flat plate. The method for manufacturing a paper-plastic product further includes: after performing step S150, performing the above-mentioned cutting step S140; but in other embodiments, according to the demand for different paper-plastic products, the execution order of the above-mentioned cutting step S140 may be It should be changed before this step S150 is performed.

As shown in FIGS. 5 and 8B, in a preferred embodiment of the present invention, the method for manufacturing a paper-plastic product further includes step S160, that is, transferring a surface treatment film as shown in FIG. 5 through a mold assembly. 200 to the bonding layer 60 '. As shown in FIG. 5, the surface treatment film 200 and the paper-plastic product 106 ″ are placed between a mold assembly (not shown), such as a pair of convex molds and concave molds, and are heated and pressed. The surface treatment film 200 is transferred (or called substrate transfer 1135) to the outer surface of the bonding layer 60 'of the paper-plastic product 106 ". In the preferred embodiment shown in Figure 5, the surface treatment The film 200 mainly includes: a peelable carrier layer 2060, a release layer 2050 on a surface of the carrier layer 2060, and a hard coat on a surface of the release layer 2050 A layer 2040, at least one ink layer 2020, a decorative layer 2030 located between the cured layer 2040 and the at least one ink layer 2020, and an adhesive layer 2010 located on one of the outermost surfaces of the surface treatment film 200. The surface treatment film 200 is adhered to the bonding layer 60 'of the at least one paper-plastic body 1042. The release layer 2050, the curing layer 2040, the decoration 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 assisted from the surface treatment of the paper-plastic product 106 "with the assistance of the release layer 2050. Stripped from the film 200, the cured layer 2040 can protect the at least one ink layer 2020 and the decorative layer 2030. In the preferred embodiment, the material of the carrier layer 2060 is selected from polyethylene terephthalate ( PET), polymethyl methacrylate (PMMA), polycarbonate (PC), and polystyrene (PS); preferably, the carrier layer 30 is made of polyterephthalic acid It is composed of ethylene glycol (PET), and the thickness of the carrier layer 30 is preferably between 40 μm and 80 μm, but the scope of the present invention is not limited thereby.

As shown in FIG. 8B, in a preferred embodiment of the present invention, the method for manufacturing a paper-plastic product further includes: after performing step S160, performing the aforementioned cutting step S140; but in other embodiments, according to the Depending on the requirements of the paper-plastic products, the execution order of the cutting step S140 may be changed to be earlier than the execution of the step S160.

Compared with the prior art, the paper-plastic product manufacturing method of the present invention is applied to a uniform production machine for wet-fiber paper-plastic process to spray a large-area spray coating 60 on the surface of the paper-plastic body in a rapid and large area to form a Uniformly distributed bonding layer 60 'not only saves processing time At the same time, it can ensure higher product yield and quality. By forming the bonding layer 60 ′ on the outer surface of the paper-plastic body 1042 of the paper-plastic product 106 by the method of manufacturing the paper-plastic product of the present invention, not only can the chance of chipping and dust generation on the surface of the paper-plastic product 106 be reduced. Moreover, when graphic printing is performed on the outer surface of the paper-plastic product 106'106 ", the bonding layer 60 'is not likely to cause problems such as smearing or ink absorption caused by printing distortion, and can also enhance the paper-plastic product The water resistance of the 106 surface and the abrasion resistance of the outer surface of the paper-plastic product 106 can be improved.

The above are only the preferred embodiments of the present invention. It should be noted that for those skilled in the art, without departing from the principles of the present invention, several improvements and retouches can be made. These improvements and retouches should also be considered as The protection scope of the present invention.

Claims (10)

A manufacturing method of paper-plastic products is used for high-efficiency automatic coating in a continuous continuous production machine of a wet fiber paper-plastic manufacturing process, and the continuous-related automatic production machine includes a pulp fishing and pre-pressing equipment, a paper Plastic product hot-press molding equipment and a paper-plastic product surface coating equipment, the manufacturing method includes at least one pulp fishing step, including using the pulp fishing and pre-pressing equipment, a first upper mold and a first lower mold. One of the molds collects a pulp fiber body containing wet fibers in a pulp tank, and further forms a wet embryo composed of the pulp material body between the first upper mold and the first lower mold; at least one The pressing step includes pressing the first upper mold and the first lower mold to each other to press-clamp the wet embryo, and discharging a part of the moisture and / or moisture contained in the wet embryo to form as A first semi-finished product; at least one hot-press forming step, including placing the first semi-finished product between a second upper mold and a second lower mold of the paper-plastic product hot-press molding equipment, and making the second upper mold Pressed against the second lower mold to The first semi-finished product is hot-pressed, and a part of the water vapor and / or moisture contained in the first semi-finished product is discharged, thereby forming a second semi-finished product; and a surface coating step, through the paper-plastic product surface coating equipment Liquid coating is applied to at least one outer surface of at least one paper-plastic body of the second semi-finished product to form a paper-plastic product with a bonding layer. The surface coating step further includes: using a conveying device to movably carry the first Two semi-finished products to the paper-plastic product surface coating equipment, wherein the paper-plastic product surface coating equipment includes a programmable moving device having a moving part, a nozzle unit provided in the moving part, and a control device; when at least one sense When the sensor detects that the second semi-finished product reaches a position ready for spraying, the at least one sensor sends a notification signal to the programmable mobile device and / or the control device to start spraying operation; and when the mobile part drives When the nozzle unit is programmed to move along a predetermined spray path and / or moving speed relative to the at least one surface of the at least one paper-plastic body, the spray unit is programmable. The coating liquid spraying unit to the upper surface of at least one of the at least one paper-atomizing body via an adjustable control of the control device. The method for manufacturing a paper-plastic product according to item 1 of the patent application scope, wherein the surface coating step further comprises: drying the at least one surface of the at least one paper-plastic body of the second semi-finished product at a temperature by a drying device. The liquid coating is sprayed on to form the bonding layer of the paper-plastic product. The method for manufacturing a paper-plastic product according to item 1 of the scope of the patent application, wherein the at least one paper-plastic body of the second semi-finished product has a three-dimensional structure. The method for manufacturing a paper-plastic product according to item 1 of the scope of patent application, wherein the components of the liquid coating include hydrofluoroether and fluorine compounds. The method for manufacturing a paper-plastic product according to item 1 of the patent application scope, wherein the components of the liquid coating include styrene-acrylate copolymer, polyethylene wax, water, butyl acetate, and amine antioxidant. The method for manufacturing a paper-plastic product according to item 1 of the scope of patent application, wherein when the thickness of the bonding layer ranges from 20 to 200 μm, the bonding layer meets the RCA standard abrasion test under the ASTM F-2357-04 specification. 3 ~ 50 standard friction times. The method for manufacturing a paper-plastic product according to item 1 of the scope of patent application, further comprising: transferring an ink layer to the bonding layer of the paper-plastic product through a printing plate, wherein the printing plate is a gravure, a letterpress, One of screen and tablet. The method for manufacturing a paper-plastic product according to item 1 of the scope of patent application, further comprising: transferring a surface treatment film to the bonding layer through a mold component. The method for manufacturing a paper-plastic product according to item 8 of the scope of patent application, wherein the surface treatment film includes: a peelable carrier layer; a release layer on a surface of the carrier layer; a curing layer, Located on a surface of the release layer; a decorative layer on a surface of the cured layer; at least one ink layer; and an adhesive layer on one of the outermost surfaces of the surface treatment film for adhesion to On the bonding layer of the paper-plastic product. The method for manufacturing a paper-plastic product according to item 1 of the scope of patent application, further comprising a cutting step of cutting the paper-plastic product with a die to form a paper-plastic product.