Production process of novel PET (Polyethylene Terephthalate) film veneer plate

Abstract

The invention relates to the technical field of board production, in particular to a production process of a novel PET film veneer board, which comprises the following steps: S1, material preparation, S2, coating, S3, cutting, S4, lamination, S5, hot pressing and S6, packaging, a novel PET film produced by the steps S1 to S3 can be directly sold, a board manufacturer can directly purchase and use the novel PET film, the production cost is reduced, and the production efficiency is improved. The novel PET film and the base material are subjected to hot-pressing treatment only by hot-pressing equipment, so that a plurality of pre-processing steps and equipment are reduced, the utilization rate and the production efficiency of a plant are improved, and the problems that for plate manufacturers in the prior art, more raw materials need to be prepared, a production line is too long, excessive production equipment occupies the plant, and the production efficiency is reduced are solved; according to the novel PET film veneer board produced through the steps S1 to S6, various lines can be added on the surface of the board according to requirements, the visual attractiveness and the difference in touch sense are enhanced, and the overall aesthetic feeling is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sheet production, and in particular to a production process of a new type of PET film decorative sheet. Background Art

[0002] In the prior art, PET sheets usually use oriented strand board (OSB), medium density fiberboard (MDF), particle board or multi-layer board, etc. as the base material. First, a layer of melamine paper is hot-pressed by a hot-pressing device. After the hot-pressed sheet cools, it is sanded and dust-removed, and then PUR glue is brushed on the surface by a PUR laminating machine and the rolling process is used to perfectly combine the base material with the PET film, giving birth to the widely popular PET sheets, which are often used in the production of cabinet door panels.

[0003] In addition, in actual production, for sheet production manufacturers, the existing process requires a large number of raw materials and a long production line. Too many production devices not only occupy the workshop but also reduce production efficiency. Summary of the Invention

[0004] In order to solve the above defects, the present invention provides a production process of a new type of PET film decorative sheet, which solves the problems of a large number of raw materials, a long production line, inconvenient storage of PET film, etc.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention provides a production process of a new type of PET film decorative sheet, including the following steps:

[0007] S1. Material preparation: Prepare the PET film and clean the surface;

[0008] S2. Coating: Use a coating device to evenly coat the back of the PET film obtained in the S1. Material preparation step with a modified hot melt adhesive at a coating amount of 10 g / m² - 20 g / m² to form a paste layer with a thickness of 10 µm - 20 µm;

[0009] S3. Cutting: After the paste layer of the PET film obtained in the S2. Coating step cools and solidifies, use a cutting device to cut it into required specifications and sort and package it;

[0010] S4. Laminating: Lay the corresponding specifications of the new type of PET film obtained in the S3. Cutting step on the surface of the base material;

[0011] S5. Hot pressing: Place the base material with the new type of PET film laid on its surface obtained in the S4. Laminating step under a hot pressing device, and continuously hot press it at a temperature of 110 °C - 220 °C and a pressure of 20 MPa / m² for 15 s - 60 s to obtain the finished product of the PET film decorative sheet;

[0012] S6. Packaging: The PET film facing sheet obtained in S5. hot pressing step is placed in an environment for cooling, and then packaged after arrangement for easy transportation.

[0013] Furthermore, the base material in the bonding step S4 may be one or more of European pine board, density board, particle board, multi-layer solid wood, ecological board, and grass-scented board.

[0014] Furthermore, the pressing plate of the hot pressing equipment in the hot pressing step S5 can be a flat steel plate or a textured steel plate.

[0015] The beneficial effects of adopting the above technical solution are:

[0016] 1. Through the production process of the present invention, the PET film with the adhesive layer made of modified hot melt adhesive can be stored for a long time without affecting the stickiness, can be rolled and packaged without an isolation film, and can also be divided into different specifications and directly stacked.

[0017] 2. The new PET film produced by the present invention can be directly purchased and used by plate manufacturers, who only need to use hot pressing equipment to perform hot pressing treatment on the new PET film and substrate, thereby reducing multiple pre-process steps and equipment and improving the utilization rate of the plant and production efficiency.

[0018] 3. Through the present invention, the adhesive layer formed by the modified hot melt adhesive is melted by hot pressing equipment, which can effectively improve the viscosity and increase the adhesion between the PET film and the substrate.

[0019] 4. Through the present invention, the PET film is subjected to high temperature and high pressure treatment by using hot pressing equipment, and flat steel plates or steel plates with textures can be used to produce not only smooth and bright plates, but also plates with wood grain textures or various textures with a concave and convex touch.

[0020] 5. The boards made of PET film have smaller color difference and rich color selection. In addition, PET boards show excellent performance in wear resistance, scratch resistance, acid and alkali corrosion resistance, yellowing resistance, pressure resistance, high temperature resistance and stain resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a production process flow chart of an embodiment of the present invention;

[0022] Figure 2 It is a schematic structural diagram of a novel PET film facing board material in an embodiment of the present invention.

[0023] Reference numerals

[0024] 1. PET film; 2. Adhesive layer; 3. Base material. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] The present invention provides a production process for a new type of PET film decorative sheet, including the following steps:

[0027] S1. Material preparation: Prepare the PET film and clean the surface.

[0028] S2. Coating: Use a coating device to evenly coat the back of the PET film obtained in the S1. Material preparation step with a modified hot melt adhesive at a coating amount of 10 g - 20 g per square meter to form a paste layer with a thickness of 10 μm - 20 μm.

[0029] S3. Cutting: After the paste layer of the PET film obtained in the S2. Coating step is cooled and solidified, use a cutting device to cut it into required specifications, and then sort and package it.

[0030] S4. Laminating: Lay the corresponding specifications of the new type of PET film obtained in the S3. Cutting step on the surface of the substrate.

[0031] S5. Hot pressing: Place the substrate with the new type of PET film laid on its surface obtained in the S4. Laminating step under a hot pressing device, and continuously hot press it at a temperature of 110 °C - 220 °C and a pressure of 20 MPa per square meter for 15 s - 60 s to obtain the finished product of the PET film decorative sheet.

[0032] S6. Packaging: Place the PET film decorative sheet obtained in the S5. Hot pressing step in the environment to cool, sort it and then package it for convenient transportation.

[0033] By adopting the above technical scheme, a new type of PET film can be produced after implementing S3 and the cutting step. The surface of one side of the new type of PET film is provided with an adhesive layer, which is formed by cooling and solidifying the modified hot melt adhesive. The modified hot melt adhesive has strong viscosity. Even if it is rolled and packaged after cooling and solidification, it will not stick to the other side of the PET film, and there is no need to use an isolation film for isolation, thereby saving packaging costs; the adhesive layer is coated in an amount calculated according to the area of ​​the PET film by a coating device, and the modified hot melt adhesive is evenly coated on the surface of one side of the PET film at a coating amount of 10 grams to 20 grams per square meter, with a thickness of 10 microns to 20 microns. The entire PET film is then cut into various specifications by a cutting device, which is convenient for sorting, packaging and transportation. Through the new type of PET film produced in this way, the board manufacturer can directly purchase it and then perform a hot pressing process with the existing substrate to produce a board that meets the requirements. Only the hot pressing equipment is required to perform hot pressing treatment on the PET film and the substrate, thereby reducing multiple pre-process steps and equipment, and improving the utilization rate and production efficiency of the factory. After the package is unfolded, the new PET film is spread on the substrate and pressed by hot pressing equipment. The temperature of 110 degrees Celsius to 220 degrees Celsius and the pressure of 20 MPa / m2 can be used for continuous hot pressing for 15 seconds to 60 seconds to obtain the finished product of PET film veneer board material. The lower the temperature, the longer the duration is required. If the temperature is 110 degrees Celsius, the hot pressing is continued for 60 seconds. If the temperature is 220 degrees Celsius, the hot pressing is continued for 15 seconds. The pressure applied by the hot pressing equipment needs to be maintained at 20 MPa / m2. The pressure to be applied is calculated according to the area of ​​the substrate and the PET film. In the actual production process, the temperature is generally set to 150 degrees Celsius, the duration is 30 seconds, and the pressure is 20 MPa / m2, which has the best production efficiency and pressing effect.

[0034] refer to Figure 2 , S4, the base material in the laminating step can be one or more of European pine board, density board, particle board, multi-layer solid wood, ecological board, and grass-scented board.

[0035] By adopting the above technical scheme, by using one or more of European pine board, density board, particle board, multi-layer solid wood, ecological board, and grass-scented board as the base material, the PET film can be effectively combined without peeling or falling off.

[0036] refer to Figure 1 S5. The pressing plate used in the hot pressing equipment in the hot pressing step can be a flat steel plate or a textured steel plate.

[0037] By adopting the above technical scheme, by using a flat steel plate or a steel plate with texture as a pressing plate of a hot pressing device, a smooth and bright PET film decorative plate material or a PET film decorative plate material with various textures, including wood grain texture, stone grain, etc., can be manufactured.

[0038] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the horizontal height of the first feature is less than that of the second feature.

[0039] In the description of this specification, the description of reference terms such as "an embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0040] As described above, it is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and the inventive concept thereof, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A production process of a new type of PET film decorative panel, characterized in that: It includes the following steps: S1. Stock preparation: Prepare the PET film (1) and clean its surface; S2. Coating: Use a coating device to evenly coat the back of the PET film (1) obtained in the S1. Stock preparation step with a modified hot melt adhesive at a coating amount of 10 g - 20 g per square meter to form a paste layer (2) with a thickness of 10 μm - 20 μm; S3. Cutting: After the paste layer (2) of the PET film (1) obtained in the S2. Coating step is cooled and cured, use a cutting device to cut it into a new PET film with a required specification, and then sort and package it; S4. Laminating: Lay the new PET film with the corresponding specification obtained in the S3. Cutting step on the surface of the substrate (3); S5. Hot pressing: Place the substrate with the new PET film laid on its surface obtained in the S4. Laminating step under a hot pressing device, and continuously hot press it at a temperature of 110 °C - 220 °C and a pressure of 20 MPa per square meter for 15 s - 60 s to obtain the finished product of the PET film decorative panel; S6. Packaging: Place the new PET film decorative panel obtained in the S5. Hot pressing step in the environment to cool, sort it and then package it for convenient transportation.

2. The production process of a new type of PET film decorative panel according to claim 1, characterized in that: The substrate (3) in the S4. Laminating step can be one or several of oriented strand board, density board, particle board, multi-layer solid wood, ecological board, and wheat straw board.

3. The production process of a new type of PET film decorative panel according to claim 1, characterized in that: The pressing plate of the hot pressing device in the S5. Hot pressing step can be one of a flat steel plate or a steel plate with patterns.

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