Method for preparing weather-resistant printing board

Abstract

The present disclosure belongs to the technical field of board manufacturing, and relates to a method for preparing a weather-resistant printing board. It specifically includes the following steps: S-1, printing on at least one decorative surface of a core material layer of the board or on an overlay surface of a prefabricated wear-resistant layer to form a printed pattern layer; S-2, forming an adhesive layer between the printed pattern layer and the prefabricated wear-resistant layer or between the printed pattern layer and the core material layer; S-3, bonding the prefabricated wear-resistant layer and the core material layer to obtain the board. The peeling force of the wear-resistant layer of the outer layer of the board obtained by the present disclosure can reach at least 3 MPa, and at the same time, the prefabricated wear-resistant layer is adopted to reduce the requirements on device and production sites.

Claims

1. A method for preparing weather-resistant printing board, wherein comprising the following steps: S-1, printing on an overlay surface of a prefabricated wear-resistant layer to form a printed pattern layer, wherein before printing the pattern layer on the prefabricated wear-resistant layer, coating a protective layer first on the prefabricated wear-resistant layer, and then printing a pattern on the protective layer formed by a weather-resistant paint; S-2, coating an adhesive on the prefabricated wear-resistant layer printed with the printed pattern layer, to form an adhesive layer; S-3, bonding the prefabricated wear-resistant layer formed with the adhesive layer and the core material layer to obtain the board.

2. The method according to claim 1, wherein a coating amount of an adhesive used in the adhesive layer in step S-2 is 80-125 grams per square meter.

3. The method according to claim 1, wherein the prefabricated wear-resistant layer is selected from a group consisting of a prefabricated PMMA layer, a prefabricated PC layer and a prefabricated PVDF layer.

4. The method according to claim 3, wherein the prefabricated wear-resistant layer is a prefabricated PMMA layer.

5. A board obtained by a method according to any one of claims 1, 2, 3, or 4.

Description

DESCRIPTION OF EMBODIMENTS

(1) In order to further explain the technical solution of the present disclosure in detail, the present disclosure will be further clarified below in combination with specific embodiments.

EXAMPLE 1

(2) A method for preparing a wear-resistant printing board may include the following steps:

(3) S-1, forming a core layer of target size by extruding, shaping, cooling, and cutting through an extruder;

(4) S-2, inputting the core material layer to an online printing device, and printing out a printed pattern layer showing wood grain, figure or pattern, with a thickness of 0.5 silk;

(5) S-3, coating PUR glue on an overlay surface of the prefabricated PMMA wear-resistant layer to form an adhesive layer.

(6) The amount of glue applied may be 120 grams per square meter;

(7) S-4, attaching and pressing the prefabricated wear-resistant layer with the adhesive layer on the printed pattern layer to form the prefabricated wear-resistant layer on the decorative layer;

(8) S-5, curing the obtained board for 7 days in an environment with a temperature of 40° C. and a humidity of 60%.

EXAMPLE 2

(9) A method for preparing a wear-resistant printing board may include the following steps:

(10) S-1, forming a core material layer of the target size by extruding, shaping, cooling, and cutting through an extruder; and engraving a texture with wood grain, figure or pattern when the core material layer passes through the embossing roller;

(11) S-2, inputting the core material layer to an online 3D printing device, and depositing the corresponding color on the texture, with a thickness of 1.5 filaments;

(12) S-3, coating PUR glue on an overlay surface of the prefabricated PMMA wear-resistant layer to form an adhesive layer, with a glue amount of 80 grams per square meter;

(13) S-4, attaching and pressing the prefabricated wear-resistant layer with the adhesive layer on the printed pattern layer to form the prefabricated wear-resistant layer on the decorative layer;

(14) S-5, curing the obtained board for 7 days in an environment with a temperature of 40° C. and a humidity of 60%.

EXAMPLE 3

(15) A wear-resistant printing board includes a core material layer, a printed pattern layer printed on the decorative surface of the core material layer, a prefabricated wear-resistant layer on the print pattern layer, and an adhesive layer between the printed pattern layer and the prefabricated wear-resistant layer.

(16) The core material layer can be any core material layer, not limited to polyvinyl chloride foamed materials, but also suitable for non-foamed polyvinyl chloride materials, polyvinyl chloride WPC materials, polyolefin WPC materials, SPC materials, etc. It is suitable for both foamed and non-foamed materials formed by thermoplastic materials. In the embodiment, a PVC foamed core material layer is selected.

(17) The preparation method may include the following steps:

(18) S-1, forming a PVC foamed core material layer of the target size by extruding, shaping, cooling, and cutting through an extruder; and engraving a texture with wood grain, figure or pattern when the core material layer passes through the embossing roller;

(19) S-2, inputting the core material layer to an online 3D printing device, and depositing the corresponding color on the texture, with a thickness of 1.0 filaments;

(20) S-3, coating PUR glue on an overlay surface of the prefabricated PMMA wear-resistant layer to form an adhesive layer, with a glue amount of 110 grams per square meter;

(21) S-4, attaching and pressing the prefabricated wear-resistant layer with the adhesive layer on the printed pattern layer to form the prefabricated wear-resistant layer on the decorative layer, to obtain the board;

(22) S-5, curing the obtained board for 7 days in an environment with a temperature of 40° C. and a humidity of 60%.

EXAMPLE 4

(23) The difference from Example 3 is that in step S-2, the adhesive is coated on the printed pattern layer to form an adhesive layer.

EXAMPLE 5

(24) The difference from Example 3 is that a prefabricated PC film is adopted by the prefabricated wear-resistant layer.

EXAMPLE 6

(25) The difference from Example 3 is that a polyamide glue is adopted by the adhesive.

EXAMPLE 7

(26) The difference from Example 3 is that the prefabricated wear-resistant layer uses a prefabricated PVDF film.

EXAMPLE 8

(27) The difference from Example 3 is that in S-2, after the printed pattern layer is formed, a protective layer is coated on the printed pattern layer, and the protective layer is made of UV transparent weather-resistant paint.

EXAMPLE 9

(28) A method for preparing a wear-resistant printing board may include the following steps:

(29) S-1, forming a core material layer of the target size by extruding, shaping, cooling, and cutting through an extruder;

(30) S-2, inputting the core material layer to an online printing device, and printing out a printed pattern layer showing wood grain, figure or pattern, with a thickness of 0.5 silk;

(31) S-3, coating PUR glue on an overlay surface of the prefabricated PMMA wear-resistant layer to form an adhesive layer, with a glue amount of 120 grams per square meter;

(32) S-4, attaching and pressing the prefabricated wear-resistant layer with the adhesive layer on the printed pattern layer to obtain the board;

(33) S-5, curing the obtained board for 7 days in an environment with a temperature of 40° C. and a humidity of 60%

EXAMPLE 10

(34) The difference from Example 9 is that, before step S-2, a protective layer is coated on the reverse side of the prefabricated PMMA wear-resistant layer (that is, the side of the printed pattern layer), and the protective layer is made of UV transparent weather-resistant paint.

(35) For the boards of Examples 1-10, the peel strength of the prefabricated wear-resistant layer was measured, and the measurement results are as follows:

(36) TABLE-US-00001 TABLE 1 Sample Peel strength/MPa Example 1 5.2 Example 2 4.0 Example 3 4.9 Example 4 3.3 Example 5 4.0 Example 6 3.0 Example 7 4.5 Example 8 4.5 Example 9 5.0  Example 10 4.8

(37) In addition, the inventor also measured the peel strength of the boards according to Examples 9 and 10 after six months of exposure in the open air, and it was showed that the peel strength of the board according to Example 9 was 4.5 MPa, while the peel strength of the board according to Example 10 was still maintained at 4.8 MPa.

COMPARATIVE EXAMPLE 1

(38) A method for preparing a wear-resistant printing board may include the following steps:

(39) S-1, forming a core material layer of the target size by extruding, shaping, cooling, and cutting through an extruder; and engraving a texture with wood grain, figure or pattern when the core material layer passes through the embossing roller;

(40) S-2, inputting the core material layer to an online 3D printing device, and depositing the corresponding color on the texture, with a thickness of 5 filaments;

(41) S-3, coating PUR glue on an overlay surface of the prefabricated PMMA wear-resistant layer to form an adhesive layer, with a glue amount of 120 grams per square meter;

(42) S-4, attaching and pressing the prefabricated wear-resistant layer with the adhesive layer on the printed pattern layer to form the prefabricated wear-resistant layer on the decorative layer;

(43) S-5, curing the obtained board for 7 days in an environment with a temperature of 40° C. and a humidity of 60%.

(44) The difference from Example 1 is that the printed pattern layer has a thickness of 5 filaments.

COMPARATIVE EXAMPLE 2

(45) A method for preparing a wear-resistant printing board may include the following steps:

(46) S-1, forming a core material layer of the target size by extruding, shaping, cooling, and cutting through an extruder; and engraving a texture with wood grain, figure or pattern when the core material layer passes through the embossing roller;

(47) S-2, inputting the core material layer to an online 3D printing device, and depositing the corresponding color on the texture, with a thickness of 5 filaments;

(48) S-3, coating PUR glue on an overlay surface of the prefabricated PMMA wear-resistant layer to form an adhesive layer, with a glue amount of 50 grams per square meter;

(49) S-4, attaching and pressing the prefabricated wear-resistant layer with the adhesive layer on the printed pattern layer to form the prefabricated wear-resistant layer on the decorative layer;

(50) S-5, curing the obtained board for 7 days in an environment with a temperature of 40° C. and a humidity of 60%.

(51) The difference from Example 1 is that the amount of glue coated to the adhesive layer is 50 grams per square meter.

COMPARATIVE EXAMPLE 3

(52) A method for preparing a wear-resistant printing board may include the following steps:

(53) S-1, forming a core material layer of the target size by extruding, shaping, cooling, and cutting through an extruder; and engraving a texture with wood grain, figure or pattern when the core material layer passes through the embossing roller;

(54) S-2, inputting the core material layer to an online 3D printing device, and depositing the corresponding color on the texture, with a thickness of 5 filaments;

(55) S-3, coating PUR glue on an overlay surface of the prefabricated PMMA wear-resistant layer to form an adhesive layer, with a glue amount of 150 grams per square meter;

(56) S-4, attaching and pressing the prefabricated wear-resistant layer with the adhesive layer on the printed pattern layer to form the prefabricated wear-resistant layer on the decorative layer;

(57) S-5, curing the obtained board for 7 days in an environment with a temperature of 40° C. and a humidity of 60%.

(58) The difference from Example 1 is that the amount of glue coated to the adhesive layer is 150 grams per square meter.

COMPARATIVE EXAMPLE 4

(59) The difference from Example 1 is that no adhesive layer is provided, and the prefabricated wear-resistant layer is directly bonded to the printed pattern layer by heat pressing.

COMPARATIVE EXAMPLE 5

(60) The preparation method of Embodiment 2 disclosed in Chinese invention patent application CN109849397A was adopted.

(61) For the boards obtained in Comparative Examples 1-5, the peel strength of the prefabricated wear-resistant layer was measured. The test method is carried out by the wear resistance measurement method in GB/T17657-2013, the measurement results are as follows:

(62) TABLE-US-00002 TABLE 2 Samples Peel strength/MPa Comparative Example 1 2.9 Comparative Example 2 2.4 Comparative Example 3 2.3 Comparative Example 4 1.6 Comparative Example 5 2.2

(63) From the peel strength data in Table 2, Comparative Example 1 is worse than Example 3 because the printed pattern layer is too thick, but the thickness of the adhesive layer remains unchanged, leading to the breakage of the overall adhesiveness of the adhesive layer, resulting in a deteriorating in the bond strength. Comparative Examples 2 and 3 are worse than Example 3 because the amount of glue applied to the adhesive layer is too much or too little, causing the overall adhesiveness of the adhesive layer to be too strong and easy to fall off as a whole, or too weak to cause insufficient adhesive force. Comparative Example 4 is worse than Example 3 in that no adhesive layer is provided and does not have the effect of the adhesive layer of the present disclosure.

(64) In addition, the wear resistance tests of the boards obtained in Examples 1-7 and Comparative Examples 1-5 were also carried out:

(65) Test method: Test Method 3 of Wear Resistance provided in GB/T17657-2013. The results are shown in Table 3.

(66) TABLE-US-00003 TABLE 3 Samples Wear Value (g/100 r) Example 1 0.05 Example 2 0.05 Example 3 0.05 Example 4 0.06 Example 5 0.07 Example 6 0.06 Example 7 0.07 Example 8 0.04 Example 9 0.05  Example 10 0.04 Comparative Example 1 0.05 Comparative Example 2 0.06 Comparative Example 3 0.06 Comparative Example 4 0.06 Comparative Example 5 0.08

(67) In addition, the surface adhesion strength tests were carried out on the boards obtained in Examples 1-7 and Comparative Examples 1-5:

(68) Test method: GB/T15102-2006, the surface adhesion strength determination method. The results are shown in Table 4.

(69) TABLE-US-00004 TABLE 4 Samples Surface Adhesion Strength/MPa Example 1 1.72 Example 2 1.41 Example 3 1.69 Example 4 1.29 Example 5 1.40 Example 6 1.26 Example 7 1.64 Comparative Example 1 1.22 Comparative Example 2 1.15 Comparative Example 3 1.14 Comparative Example 4 0.60 Comparative Example 5 1.13

(70) In addition, weather resistance tests were carried out on the boards obtained in Examples 1-10 and Comparative Examples 1-5:

(71) 100 pieces of the board samples of each example and comparative example were taken, and the yellowing conditions were counted after 1000 hours of UV. The results are shown in Table 5.

(72) TABLE-US-00005 TABLE 5 Samples Percentage of Yellowing/% Example 1 0 Example 2 0 Example 3 0 Example 4 0 Example 5 9 Example 6 9 Example 7 12 Example 8 0 Example 9 0  Example 10 0 Comparative Example 1 3 Comparative Example 2 0 Comparative Example 3 3 Comparative Example 4 18 Comparative Example 5 25