A formaldehyde-free high-wear-resistant coated flexible floor paper and its processing method and application

Abstract

The application discloses a kind of formaldehyde-free high wear-resistant coating flexible floor paper and its processing method and application, belong to decorative paper technical field.The floor paper includes impregnated paper layer, wear-resistant layer and scratch-resistant layer;Impregnated paper layer is formed after decorative paper is impregnated with formaldehyde-free resin coating, and formaldehyde-free resin coating is composed of acrylic resin or emulsion, polyurethane resin or emulsion, coupling agent, penetrant, curing agent, water;Wear-resistant layer is the coating layer formed by wear-resistant coating, and wear-resistant coating is composed of vinyl chloride and acrylate copolymer emulsion, acrylate resin, aluminium oxide and water repellent agent;Scratch-resistant layer is the coating layer formed by scratch-resistant coating, and scratch-resistant coating is composed of acrylic resin or emulsion, silicone resin or emulsion, touch resin, leveling agent, coupling agent, stain-resistant aid A and stain-resistant aid B.The application can realize high wear resistance of floor paper without composite wear-resistant paper, and the floor paper has high transparency, high flexibility, scratch resistance and other characteristics, and the printed pattern is clear, which can realize high flexibility winding.

Description

Technical Field

[0001] This invention relates to the field of decorative paper technology, and more specifically, to a formaldehyde-free, highly abrasion-resistant coated flexible flooring paper, its processing method, and its application. Background Technology

[0002] Currently, decorative flooring on the market comes in two main forms. One method involves printing patterns onto plastic films such as PVC, PET, and BOPP, then hot-pressing them onto a substrate. A wear-resistant plastic film is then laminated onto the plastic film. This method utilizes wear-resistant plastic films of varying thicknesses to meet different wear resistance requirements for the decorative flooring. The other method involves impregnating printed decorative paper with melamine-formaldehyde resin to form sheets, and then impregnating wear-resistant paper with melamine-formaldehyde resin to form sheets. The melamine-formaldehyde resin-impregnated decorative paper is then heat-sealed to a substrate. Finally, wear-resistant paper impregnated with melamine-formaldehyde resin is laminated onto the decorative paper to obtain the decorative flooring. This method achieves different wear resistance requirements by controlling the amount of melamine-formaldehyde resin impregnated on the wear-resistant paper.

[0003] The first type of decorative flooring uses all-plastic decorative materials, which is not environmentally friendly. Moreover, the plastic will decompose and release harmful gases over time. The second type of decorative flooring releases formaldehyde from the melamine-formaldehyde resin during use, which is highly harmful to the human body. Furthermore, because the melamine-formaldehyde resin forms a hard and dense structure after curing during the production process, the decorative paper and wear-resistant paper impregnated with melamine-formaldehyde resin have very poor flexibility, making it difficult to roll them into rolls for continuous production.

[0004] Furthermore, neither of the above two types of decorative flooring can achieve truly high wear resistance; the wear resistance revolutions are generally no more than 10,000 revolutions. Although the latter type of decorative flooring can improve wear resistance by increasing the amount of melamine-formaldehyde resin impregnated on the wear-resistant paper, excessive impregnation will reduce the transparency of the wear-resistant paper, resulting in a blurry display of the pattern on the decorative paper.

[0005] Therefore, it is necessary to develop a formaldehyde-free, highly wear-resistant coated flexible flooring paper to prepare new decorative flooring, thereby solving the problems existing in the current technology. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a formaldehyde-free, highly wear-resistant coated flexible flooring paper, its processing method, and its application.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A formaldehyde-free, highly abrasion-resistant coated flexible flooring paper, comprising, from bottom to top, an impregnated paper layer, an abrasion-resistant layer, and a scratch-resistant layer;

[0009] The impregnated paper layer is formed by impregnating decorative paper with formaldehyde-free resin coating. The formaldehyde-free resin coating is composed of acrylic resin or emulsion, polyurethane resin or emulsion, coupling agent, penetrant, curing agent, and water.

[0010] The wear-resistant layer is a coating formed by a wear-resistant coating, which is composed of a vinyl chloride and acrylate copolymer emulsion, acrylate resin, aluminum oxide and a water-resistant agent;

[0011] The anti-scratch layer is a coating formed by anti-scratch paint, which is composed of acrylic resin or emulsion, silicone resin or emulsion, tactile resin, leveling agent, coupling agent, antifouling agent A and antifouling agent B.

[0012] The present invention is further configured such that the impregnation amount of the formaldehyde-free resin coating is 100-120 g / m³. 2 The dry weight of the wear-resistant coating is 110-230 g / m². 2 The dry weight of the scratch-resistant coating is 15-25 g / m². 2 .

[0013] The present invention is further configured such that the formaldehyde-free resin coating is made from the following raw materials in parts by weight: 50-60 parts of acrylic resin or emulsion, 30-40 parts of polyurethane resin or emulsion, 0.4-0.6 parts of coupling agent, 6-8 parts of penetrant, 0.5-0.8 parts of curing agent, and 2.5-4 parts of water.

[0014] The present invention is further configured such that the wear-resistant coating is made from the following raw materials in parts by weight: 40-50 parts of vinyl chloride and acrylate copolymer emulsion, 10-20 parts of acrylate resin, 40-50 parts of aluminum oxide, and 0.3-0.5 parts of water-resistant agent.

[0015] The present invention is further configured such that the anti-scratch coating is made from the following raw materials in parts by weight: 40-45 parts of acrylic resin or emulsion, 25-30 parts of siloxane resin or emulsion, 25-30 parts of tactile resin, 1.5-2.5 parts of leveling agent, 0.5-0.7 parts of coupling agent, 0.6-0.8 parts of anti-fouling additive A, and 0.3-0.4 parts of anti-fouling additive B.

[0016] The present invention is further configured such that the tactile resin is one of water-based self-matting polyurethane; the anti-fouling agent A is one of polyether-modified silicone oil; and the anti-fouling agent B is one of organosilicon resin.

[0017] A processing technology for formaldehyde-free, highly abrasion-resistant coated flexible flooring paper includes the following steps:

[0018] (a) The decorative paper is impregnated with glue, dried and then rolled up to obtain an impregnated paper layer;

[0019] (b) Apply a wear-resistant coating to the front side of the impregnated paper layer and dry it to obtain a wear-resistant layer;

[0020] (c) Apply an anti-scratch coating to the surface of the wear-resistant layer and dry it to obtain an anti-scratch layer.

[0021] Application of a formaldehyde-free, highly wear-resistant coated flexible flooring paper in the preparation of decorative flooring.

[0022] The present invention is further configured such that the decorative flooring is prepared by: coating the back of the impregnated paper layer of a formaldehyde-free, high-wear-resistant coated flexible flooring paper with a heat-sealing coating, and then laminating the heat-sealing coated flooring paper with a flooring substrate and drying it to obtain the finished product.

[0023] The present invention is further configured such that the heat-sealing coating is made by mixing heat-sealing resin A, heat-sealing resin B and a crosslinking agent, or by mixing heat-sealing resin C, heat-sealing resin D and a crosslinking agent, or by mixing heat-sealing resin D and a crosslinking agent; heat-sealing resin A is a polyvinyl acetate emulsion, heat-sealing resin B is a modified acrylic resin hot melt adhesive; heat-sealing resin C is a polyurethane hot melt adhesive, and heat-sealing resin D is an acrylic ester adhesive.

[0024] In summary, the present invention has the following beneficial effects:

[0025] 1. This invention uses a formaldehyde-free resin coating to impregnate decorative paper to obtain a rollable impregnated paper layer. A wear-resistant coating is then applied to the surface of the impregnated paper layer to obtain a wear-resistant layer. Finally, an anti-scratch coating is applied to the surface of the wear-resistant layer to obtain an anti-scratch layer, resulting in a formaldehyde-free, highly wear-resistant coated flexible flooring paper. This invention achieves high wear resistance (abrasion resistance of over 12,000 revolutions) without the need for further lamination with wear-resistant paper. The resulting flooring paper features high transparency, high flexibility, and scratch resistance, with clearly visible printed patterns. It also allows for highly flexible roll-up, which is beneficial for continuous production.

[0026] 2. The back of the impregnated paper layer of the flooring paper of the present invention can be coated with different heat-sealing adhesives according to different flooring substrates, so as to achieve a firm bond with different substrate materials and achieve the purpose of not delaminating after boiling for 2 hours. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the formaldehyde-free, high-wear-resistant coated flexible flooring paper of the present invention;

[0028] Figure 2 The image shows the formaldehyde-free, highly abrasion-resistant coated flexible flooring paper prepared in Example 1.

[0029] In the diagram: 1. Impregnated paper layer; 2. Abrasion-resistant layer; 3. Scratch-resistant layer. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] like Figure 1 As shown, the formaldehyde-free, high-wear-resistant coated flexible flooring paper of the present invention comprises, from bottom to top, an impregnated paper layer 1, a wear-resistant layer 2, and a scratch-resistant layer 3.

[0032] Impregnated paper layer 1 is formed by impregnating decorative paper with a formaldehyde-free resin coating. The thickness of the decorative paper is 100μm ± 10μm, and the basis weight is 100g / m². 2 ±15g / m 2 The impregnation amount of formaldehyde-free resin coating is 100-120 g / m². 2 The formaldehyde-free resin coating is made from the following raw materials in parts by weight: 50-60 parts acrylic resin or emulsion, 30-40 parts polyurethane resin or emulsion, 0.4-0.6 parts coupling agent, 6-8 parts penetrant, 0.5-0.8 parts curing agent, and 2.5-4 parts water. Preferably, the acrylic resin or emulsion is a water-soluble acrylic resin or a self-crosslinking acrylic emulsion; the polyurethane resin or emulsion is preferably a water-based polyurethane resin or polyurethane emulsion; the coupling agent is preferably a silane coupling agent KH560, KH550, or KH570; the penetrant is preferably a penetrant JFC-6, penetrant JFC-2, or penetrant AEO-9; and the curing agent is preferably a hydrophilic modified aliphatic polyisocyanate curing agent.

[0033] Wear-resistant layer 2 is a coating formed by wear-resistant paint; the dry weight of wear-resistant layer 2 is 110-230 g / m². 2 The wear-resistant coating is made from the following raw materials in parts by weight: 40-50 parts of vinyl chloride-acrylate copolymer emulsion, 10-20 parts of acrylate resin, 40-50 parts of aluminum oxide, and 0.3-0.5 parts of water-resistant agent. The vinyl chloride-acrylate copolymer emulsion is preferably a chloro-acrylic emulsion; the water-resistant agent is preferably one of polyamide-polyurea water-resistant agents, polyamide-polyamine-epoxychloropropane resin water-resistant agents, or modified glyoxal water-resistant agents.

[0034] Anti-scratch layer 3 is a coating formed by anti-scratch paint; the dry weight of anti-scratch layer 3 is 15-25 g / m². 2The scratch-resistant coating is made from the following raw materials in parts by weight: 40-45 parts acrylic resin or emulsion, 25-30 parts siloxane resin or emulsion, 25-30 parts tactile resin, 1.5-2.5 parts leveling agent, 0.5-0.7 parts coupling agent, 0.6-0.8 parts anti-fouling additive A, and 0.3-0.4 parts anti-fouling additive B. Preferably, the acrylic resin or emulsion is a water-soluble acrylic resin or a self-crosslinking acrylic emulsion; the siloxane resin or emulsion is preferably a polydimethylsiloxane waterborne emulsion; the tactile resin is preferably a waterborne self-matting polyurethane; the leveling agent is preferably a polyether-modified siloxane leveling agent; the coupling agent is preferably a silane coupling agent KH560 or KH550; anti-fouling additive A is preferably a polyether-modified silicone oil; and anti-fouling additive B is preferably an organosilicon resin.

[0035] The processing technology for formaldehyde-free, high-wear-resistant coated flexible flooring paper of this invention is as follows:

[0036] (a) A formaldehyde-free resin coating is obtained by uniformly mixing acrylic resin or emulsion, polyurethane resin or emulsion, coupling agent, penetrant, curing agent, and water in a certain proportion; an abrasion-resistant coating is obtained by uniformly mixing vinyl chloride and acrylate copolymer emulsion, acrylate resin, aluminum oxide, and water-resistant agent in a certain proportion; and a scratch-resistant coating is obtained by uniformly mixing acrylic resin or emulsion, siloxane resin or emulsion, tactile resin, leveling agent, coupling agent, antifouling additive A, and antifouling additive B in a certain proportion.

[0037] (b) The decorative paper is passed through an impregnation tank containing formaldehyde-free resin coating at a speed of 45-60 m / min for impregnation treatment (impregnation time not less than 7s, the liquid level of formaldehyde-free resin coating is at least 100mm above the decorative paper), and then dried at 120-125℃ for 35-45s (preferably air flotation drying method), and then wound up to obtain impregnated paper layer 1 (the moisture content of impregnated paper layer 1 is controlled at 4-6wt%).

[0038] (c) Apply a wear-resistant coating to the front side of the impregnated paper layer 1 (coating rate is 40-50 m / min), and then dry it at 108-115℃ (preferably drying in a drying tunnel) to obtain the wear-resistant layer 2;

[0039] (d) Apply an anti-scratch coating to the surface of the wear-resistant layer 2 (coating rate of 45-60 m / min), and then dry it at 108-115℃ (preferably using a drying tunnel) to obtain the anti-scratch layer 3, thus completing the processing of the formaldehyde-free, high-wear-resistant coated flexible flooring paper.

[0040] This invention relates to a formaldehyde-free, high-wear-resistant coated flexible flooring paper that can be used in the preparation of decorative flooring. The preparation method is as follows: a heat-sealing coating is applied to the back of the impregnated paper layer 1 of the formaldehyde-free, high-wear-resistant coated flexible flooring paper (coating rate 50-60 m / min), and the heat-sealing coated flooring paper is then laminated with a flooring substrate. After lamination, the substrate is dried at 108-115℃ (preferably using a drying tunnel) to obtain the decorative flooring. The dried heat-sealing coating forms a heat-sealed layer with a dry coating weight of 25-30 g / m². 2 .

[0041] The heat-sealing coating is prepared by mixing 90-95 parts by weight of heat-sealing resin A, 5-8 parts by weight of heat-sealing resin B, and 0.5-1.5 parts by weight of crosslinking agent (preferably, heat-sealing resin A is a polyvinyl acetate emulsion, heat-sealing resin B is preferably a modified acrylic resin hot melt adhesive, and the crosslinking agent is preferably a trifunctional aziridine crosslinking agent); or by mixing 85-90 parts by weight of heat-sealing resin C, 10-15 parts by weight of heat-sealing resin D, and 0.5-1.5 parts by weight of crosslinking agent (preferably, heat-sealing resin C is preferably a polyurethane hot melt adhesive, heat-sealing resin D is preferably an acrylic ester adhesive, and the crosslinking agent is preferably a trifunctional aziridine crosslinking agent); or by mixing 100 parts by weight of heat-sealing resin D with 0.5-1.5 parts by weight of crosslinking agent (preferably, the crosslinking agent is an isocyanate crosslinking agent).

[0042] The specific composition of the heat-sealing coating is selected according to the different floor substrates, which are one of the following: high-density fiberboard, PVC board, PP board, etc.

[0043] Example 1: Preparation of formaldehyde-free, high-abrasion-resistant coated flexible flooring paper

[0044] (a) Preparation of formaldehyde-free resin coatings, wear-resistant coatings, and scratch-resistant coatings:

[0045] a1: Mix 52.3 parts by weight of acrylic resin, 36.3 parts by weight of waterborne polyurethane, 0.46 parts by weight of coupling agent, 6.5 parts by weight of penetrant, 0.57 parts by weight of curing agent, and 3.88 parts by weight of water evenly to obtain a formaldehyde-free resin coating.

[0046] The acrylic resin was water-soluble acrylic resin MR1806CW, purchased from Guangdong Keding Functional Materials Co., Ltd.; the waterborne polyurethane was waterborne polyurethane X-01, purchased from Shandong Aodemei Polymer Materials Co., Ltd.; the coupling agent was silane coupling agent KH-560, purchased from Nanjing Lanlin New Material Technology Co., Ltd.; the penetrant was penetrant JFC-6 (isooctanol polyoxyethylene ether), purchased from Guangzhou Haoshi Chemical Co., Ltd.; and the curing agent was Covestro waterborne curing agent Bayhydur 401-70 (hydrophilically modified aliphatic polyisocyanate), purchased from Covestro Polymer (Shenzhen) Co., Ltd.

[0047] a2: Mix 41.07 parts by weight of vinyl chloride with acrylate copolymer emulsion, 10.5 parts by weight of acrylate resin, 46 parts by weight of aluminum oxide and 0.43 parts by weight of water-resistant agent evenly to obtain wear-resistant coating.

[0048] The vinyl chloride-acrylate copolymer emulsion, chloropropylene emulsion 302, was purchased from Jiangsu Tianxiangchenguang New Material Technology Co., Ltd.; the acrylate resin, AC-3001, was purchased from Shanghai Changhui Chemical Co., Ltd.; and the water-resistant agent, ZN-618A (polyamide-polyurea water-resistant agent), was purchased from Zhejiang Zhongnuo New Material Technology Co., Ltd.

[0049] a3: Mix 42.5 parts by weight of acrylic resin, 27.77 parts by weight of silicone emulsion, 26.5 parts by weight of tactile resin, 1.7 parts by weight of leveling agent, 0.55 parts by weight of coupling agent, 0.63 parts by weight of anti-fouling additive A and 0.35 parts by weight of anti-fouling additive B evenly to obtain an anti-scratch coating.

[0050] The acrylic resin was PE-8018A self-crosslinking water-soluble acrylic resin, purchased from Hangzhou Pengyi New Material Technology Co., Ltd.; the siloxane emulsion was Dow Corning (Dow silicone) emulsion MEM-0349 (aqueous emulsion of polydimethylsiloxane), purchased from Suzhou Spirax New Material Co., Ltd.; the tactile resin was SEAPUR 50G71 water-based self-matting polyurethane dispersion, purchased from Guangdong Dongdun New Material Technology Co., Ltd.; the coupling agent was silane coupling agent KH-560, purchased from Nanjing Lanlin New Material Technology Co., Ltd.; the leveling agent was BYK346 leveling agent (polyether modified siloxane leveling agent), purchased from Shanghai Jiahong Material Technology Co., Ltd.; antifouling additive A was polyether modified silicone oil, purchased from Guangzhou Peishang Environmental Protection Technology Co., Ltd., model 7189; and antifouling additive B was silicone resin, purchased from Guangzhou Peishang Environmental Protection Technology Co., Ltd., model 7158.

[0051] (b) Impregnate the decorative paper at a speed of 40 m / min through an impregnation tank containing formaldehyde-free resin coating (the decorative paper thickness is 0.73 mm and the basis weight is 70 g / m). 2 Purchased from Shandong Sunshine Prince Special Paper Industry Group Co., Ltd.; impregnation time: 8 seconds; formaldehyde-free resin coating level: 100mm above the decorative paper; impregnation amount: 110g / m². 2 Then, it was dried at 120°C for 40 seconds by air flotation drying to obtain the impregnated paper layer 1.

[0052] (c) Abrasion-resistant coating is applied to the front side of the impregnated paper layer 1, and then dried in a drying tunnel (the drying temperatures in three stages are 108℃, 112℃, and 115℃ respectively) to obtain abrasion-resistant layer 2; the coating rate of the abrasion-resistant coating is 40 m / min, and the dry weight of the abrasion-resistant layer 2 is 180 g / m. 2 .

[0053] (d) Apply an anti-scratch coating to the surface of the wear-resistant layer 2, and then dry it through a drying tunnel (the drying temperatures in the three stages are 108℃, 112℃, and 115℃ respectively) to obtain the anti-scratch layer 3, thus completing the preparation of formaldehyde-free, high-wear-resistant coated flexible flooring paper (see...). Figure 2 The anti-scratch coating application rate is 45 m / min, and the dry weight of anti-scratch layer 3 is 15 g / m. 2 .

[0054] The formaldehyde-free, high-abrasion-resistant coated flexible flooring paper prepared in Example 1 was subjected to performance tests (abrasion resistance was tested according to GB / T28995-2012 standard; flexibility test method: fold the flooring paper 180 degrees and observe whether cracking occurs at the fold; transparency test method: observe the clarity of the decorative paper pattern in the formaldehyde-free, high-abrasion-resistant coated flexible flooring paper with the naked eye; free formaldehyde release was tested according to GB18580-2017 standard), and the results are shown in Table 1.

[0055] Table 1

[0056]

[0057] Example 2: Preparation of Decorative Flooring

[0058] 92.3 parts by weight of heat-sealing resin A, 7 parts by weight of heat-sealing resin B, and 1.1 parts by weight of crosslinking agent were mixed evenly to obtain a heat-sealing coating. The formaldehyde-free, high-wear-resistant coated flexible flooring paper prepared in Example 1 was coated with the heat-sealing coating on the back of the impregnated paper layer 1 of the formaldehyde-free, high-wear-resistant coated flexible flooring paper (coating rate of 55 m / min). The flooring paper coated with the heat-sealing coating was then laminated with a flooring substrate (PVC board), and subsequently dried using a drying tunnel method (three drying temperatures were 108℃, 112℃, and 115℃ respectively) to obtain decorative flooring. After drying, the heat-sealing coating forms a heat-sealed layer with a dry coating weight of 28 g / m². 2 .

[0059] Heat-sealing resin A is a polyvinyl acetate emulsion (water-based emulsion), purchased from Ditao Synthetic Materials Factory in Fusha Town, Zhongshan City, model DC-99; heat-sealing resin B is a modified acrylic resin hot melt adhesive, purchased from Dongguan Daren Chemical Co., Ltd., model Elvace 1872; crosslinking agent is DSM CX-100 crosslinking agent (trifunctional aziridine crosslinking agent), purchased from Guangzhou Zhongguanmei Co., Ltd.

[0060] Example 3: Preparation of Decorative Flooring

[0061] 86.3 parts by weight of heat-sealing resin C, 12 parts by weight of heat-sealing resin D, and 1.3 parts by weight of crosslinking agent were mixed evenly to obtain a heat-sealing coating. The formaldehyde-free, high-wear-resistant coated flexible flooring paper prepared in Example 1 was coated with the heat-sealing coating on the back of the impregnated paper layer 1 (coating rate 58 m / min). The coated flooring paper was then laminated with a flooring substrate (PVC board), and subsequently dried using a drying tunnel method (three drying temperatures were 108℃, 112℃, and 115℃ respectively) to obtain decorative flooring. After drying, the heat-sealing coating forms a heat-sealed layer with a dry coating weight of 26 g / m². 2 .

[0062] Heat-sealing resin C is Henkel TECHNOMELT PUR 4665 general-purpose polyurethane hot melt adhesive, purchased from Shanghai Senhao Electronic Technology Co., Ltd.; heat-sealing resin D is acrylic adhesive (water-based hot press adhesive), purchased from Suzhou Zhuanxin Electronic Materials Co., Ltd., model DP8405NS; crosslinking agent is trifunctional oxypropidine crosslinking agent CX-100, purchased from Guangzhou Zhongguanmei Co., Ltd., model CX-100.

[0063] Example 4: Preparation of Decorative Flooring

[0064] 100 parts by weight of heat-sealing resin D and 1.5 parts by weight of crosslinking agent were mixed evenly to obtain a heat-sealing coating. The formaldehyde-free, high-wear-resistant coated flexible flooring paper prepared in Example 1 was coated with the heat-sealing coating on the back of the impregnated paper layer 1 (coating rate 51 m / min). The coated flooring paper was then laminated with a flooring substrate (PVC board), and subsequently dried using a drying tunnel method (three drying temperatures were 108℃, 112℃, and 115℃ respectively) to obtain decorative flooring. After drying, the heat-sealing coating forms a heat-sealed layer with a dry coating weight of 28.4 g / m². 2 .

[0065] The heat-sealing resin D is an acrylic adhesive (water-based hot-press adhesive), purchased from Suzhou Zhuanxin Electronic Materials Co., Ltd., model number DP8405NS; the crosslinking agent is an isocyanate crosslinking agent, purchased from Hangzhou Sibao Chemical Co., Ltd., model number BMY-6309.

[0066] The three types of decorative flooring prepared in Examples 2-4 were boiled in water at 100°C for 2 hours. No delamination or separation between the flooring paper and the substrate occurred in any of the three types of flooring. The adhesion performance of the three types of decorative flooring prepared in Examples 4-6 was tested using the cross-cut adhesion test, and no delamination or separation occurred in any of the three types of flooring.

[0067] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A formaldehyde-free, high wear resistant, coated flexible flooring paper, characterized in that, The flooring paper comprises, from bottom to top, an impregnated paper layer (1), an abrasion-resistant layer (2), and a scratch-resistant layer (3). The impregnated paper layer (1) is formed by impregnating decorative paper with formaldehyde-free resin coating. The formaldehyde-free resin coating is composed of acrylic resin or emulsion, polyurethane resin or emulsion, coupling agent, penetrant, curing agent and water. The wear-resistant layer (2) is a coating formed by wear-resistant coating, which is composed of vinyl chloride and acrylate copolymer emulsion, acrylate resin, aluminum oxide and water-resistant agent; The anti-scratch layer (3) is a coating formed by anti-scratch paint, which is composed of acrylic resin or emulsion, silicone resin or emulsion, tactile resin, leveling agent, coupling agent, anti-fouling agent A and anti-fouling agent B.

2. The aldehyde-free high wear resistant coated flexible flooring paper according to claim 1, wherein, The impregnation amount of the formaldehyde-free resin coating is 100-120 g / m³. 2 The dry weight of the wear-resistant layer (2) is 110-230 g / m. 2 The dry weight of the anti-scratch layer (3) is 15-25 g / m². 2 .

3. The aldehyde-free high wear resistant coated flexible flooring paper according to claim 1, wherein, The formaldehyde-free resin coating is made from the following raw materials in parts by weight: 50-60 parts acrylic resin or emulsion, 30-40 parts polyurethane resin or emulsion, 0.4-0.6 parts coupling agent, 6-8 parts penetrant, 0.5-0.8 parts curing agent, and 2.5-4 parts water.

4. The aldehyde-free, high wear resistant coated flexible flooring paper according to claim 1, wherein, The wear-resistant coating is made from the following raw materials in parts by weight: 40-50 parts of vinyl chloride and acrylate copolymer emulsion, 10-20 parts of acrylate resin, 40-50 parts of aluminum oxide, and 0.3-0.5 parts of water-resistant agent.

5. The aldehyde-free, high wear resistant coated flexible flooring paper according to claim 1, wherein, The scratch-resistant coating is made from the following raw materials in parts by weight: 40-45 parts acrylic resin or emulsion, 25-30 parts siloxane resin or emulsion, 25-30 parts tactile resin, 1.5-2.5 parts leveling agent, 0.5-0.7 parts coupling agent, 0.6-0.8 parts anti-fouling additive A, and 0.3-0.4 parts anti-fouling additive B.

6. The aldehyde-free, high wear resistant coated flexible flooring paper according to claim 1, wherein, The tactile resin is a type of water-based self-matting polyurethane; anti-fouling agent A is a type of polyether-modified silicone oil; and anti-fouling agent B is a type of organosilicon resin.

7. A process for the manufacture of a formaldehyde-free high wear resistant coated flexible flooring paper according to any one of claims 1 to 6, characterized in that, Includes the following steps: (a) The decorative paper is impregnated with glue, dried and then rolled up to obtain an impregnated paper layer (1). (b) A wear-resistant coating is applied to the front side of the impregnated paper layer (1), and dried to obtain the wear-resistant layer (2). (c) Apply anti-scratch coating to the surface of wear-resistant layer (2), dry, and obtain anti-scratch layer (3).

8. The application of a formaldehyde-free, high-wear-resistant coated flexible flooring paper according to any one of claims 1-6 in the preparation of decorative flooring.

9. Use of the aldehyde-free, highly wear-resistant coated flexible flooring paper according to claim 8 for the production of decorative flooring, characterized in that, The method for preparing decorative flooring is as follows: heat-sealing coating is applied to the back of the impregnated paper layer (1) of formaldehyde-free, high-wear-resistant coated flexible flooring paper, and the heat-sealing coated flooring paper is combined with the flooring substrate and dried to obtain the desired flooring.

10. Use of the formaldehyde-free, highly wear-resistant coated flexible flooring paper according to claim 9 in the production of decorative flooring, characterized in that, The heat-sealing coating is made by mixing heat-sealing resin A, heat-sealing resin B and a crosslinking agent, or by mixing heat-sealing resin C, heat-sealing resin D and a crosslinking agent, or by mixing heat-sealing resin D and a crosslinking agent. Heat-sealing resin A is a polyvinyl acetate emulsion; heat-sealing resin B is a type of modified acrylic resin hot melt adhesive; heat-sealing resin C is a type of polyurethane hot melt adhesive; and heat-sealing resin D is a type of acrylic ester adhesive.

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