Billiard table upper and support frame formed by gum dipping of kraft paper at high temperature and high pressure

Abstract

The invention provides a billiard table upper and a supporting frame formed by impregnation of kraft paper at high temperature and high pressure, and relates to the technical field of billiard tables, the billiard table upper comprises kraft paper and decorative surface paper, the kraft paper is impregnated with phenolic resin and dried at high temperature, and the kraft paper is provided with multiple layers; the decorative surface paper is impregnated with triamine resin and is dried at high temperature, and the decorative surface paper is positioned on the surface layer of the multiple layers of kraft paper; the multiple layers of kraft paper and the decorative surface paper are combined and fixed through hot pressing, and are subjected to edge sawing and trimming; pure wood pulp kraft paper and decorative surface paper are soaked with phenolic resin and triamine resin, meanwhile, the gluing amount and volatile components of the kraft paper and the decorative surface paper are quantitatively controlled, the kraft paper and the decorative surface paper are quantitatively organized after being soaked and then enter a hot press, edge sawing and trimming are conducted after a hot pressing period, and a plate body is formed to serve as the table side of the billiard table. Compared with wood in the prior art, the product is higher in hardness, more suitable in elasticity, more uniform in density and more stable in physical performance.

Description

Technical Field

[0001] The invention relates to the technical field of billiard tables, in particular to a billiard table side and a supporting frame formed by kraft paper impregnation with glue at high temperature and high pressure. Background Art

[0002] The billiard table side is an important part of the billiard table frame structure. It mainly refers to the frame component that surrounds the table cloth, connects the ball pockets, and supports the entire table surface. Its function is to fix the edge of the table cloth, bear the impact force when hitting the ball, and ensure the stability of the ball pocket position. In the existing technology, the billiard table side is generally made of wood as the main material. The advantages of using wood for table sides are easy processing and shaping, beautiful texture, and certain rigidity. However, it also has significant disadvantages: 1. Poor environmental adaptability: The wood material is uneven and easily affected by humidity and temperature changes, causing expansion, contraction or cracking, resulting in unstable table top dimensions, which in turn affects the flatness of the table top and the accuracy of the hitting line; 2. Mechanical performance limitations: Solid wood table tops may have defects such as natural scars and uneven textures, which lead to insufficient local strength and are prone to irreversible deformation under long-term high pressure. 3. Environmental protection and resource issues: High-quality solid wood tables rely on natural wood resources, and excessive logging may cause environmental problems; In summary, wood as a material for billiard table uppers has deficiencies in stability, durability and environmental friendliness. Therefore, the present invention proposes a billiard table upper and support frame formed by kraft paper impregnation at high temperature and high pressure to solve the problems existing in the prior art. Summary of the Invention

[0003] In response to the above problems, the present invention proposes a billiard table upper and support frame formed by kraft paper impregnation at high temperature and high pressure. The billiard table upper formed by kraft paper impregnation at high temperature and high pressure adopts phenolic resin and triamine resin to impregnate pure wood pulp kraft paper and decorative surface paper, and at the same time, the glue amount and volatile matter of the kraft paper and decorative surface paper are quantitatively controlled. After impregnation, they are quantitatively organized and enter the hot press. After the hot pressing cycle, they are sawed and trimmed to form a board body as the billiard table upper. Compared with the existing wood, this product has higher hardness, more suitable elasticity, more uniform density, more stable physical properties, and is more environmentally friendly.

[0004] To achieve the purpose of the present invention, the present invention is implemented through the following technical solutions: a billiard table side formed by high temperature and high pressure molding of kraft paper impregnated with glue, comprising kraft paper and decorative surface paper, wherein the kraft paper is impregnated with phenolic resin and dried at high temperature, and the kraft paper has multiple layers; The decorative surface paper is impregnated with triamine resin and dried at high temperature, and is located on the surface layer of the multiple layers of kraft paper; The multiple layers of kraft paper and decorative surface paper are fixed by heat pressing and trimmed by sawing.

[0005] A further improvement is that the phenolic resin is produced by reacting phenol, formaldehyde, urea and water in a reactor at high temperature.

[0006] A further improvement is that the phenolic resin comprises the following components in a mass ratio: 45-50 parts of phenol, 60-70 parts of formaldehyde, 8-12 parts of urea, and 15-25 parts of water.

[0007] A further improvement is that during the high-temperature reaction of the phenolic resin, the temperature is kept at 80-100° C. for 1-2 hours for hydroxymethylation, and the temperature is kept at 140-160° C. for 0.5-1 hour for polycondensation.

[0008] A further improvement is that the triamine resin is produced by reacting melamine, formaldehyde, water and an auxiliary agent in a reactor at a high temperature.

[0009] A further improvement is that the triamine resin comprises the following components in a mass ratio: 35-40 parts of melamine, 75-85 parts of formaldehyde, 10-20 parts of water and 3-5 parts of an auxiliary agent, wherein the auxiliary agent is a leveling agent and a defoaming agent.

[0010] A further improvement is that during the high-temperature reaction of the triamine resin, melamine, one-third of formaldehyde and water are first added, pre-reacted at 80-85°C, and then the remaining formaldehyde and additives are added to control the target viscosity of the triamine resin to 200-300 mPa·s (25°C).

[0011] Further improvements are: the kraft paper is pure wood pulp paper, and the kraft paper is impregnated with phenolic resin and dried at high temperature, and the glue content is controlled to be 60%, and the volatile matter is 7-10%. The decorative surface paper is impregnated with triamine resin and dried at high temperature, and the glue content is controlled to be 60-65%, and the volatile matter is 7-10%.

[0012] A further improvement is that the multiple layers of kraft paper and decorative surface paper enter a hot press and are pressed and formed at a high temperature of 135-145° C., a high pressure of 24 MPa, and a reaction time of 90 minutes.

[0013] A supporting frame is formed by splicing the billiard table sides formed by the above-mentioned kraft paper impregnated with glue and molded at high temperature and high pressure.

[0014] The beneficial effects of the present invention are: 1. The present invention uses phenolic resin and triamine resin to impregnate pure wood pulp kraft paper and decorative surface paper, and at the same time quantitatively controls the amount of glue and volatile matter of the kraft paper and decorative surface paper. After impregnation, the paper is quantitatively organized and enters the hot press. After the hot pressing cycle, the edges are sawed and trimmed to form a board body as the billiard table side. Compared with the existing wood, this product has higher hardness, more suitable elasticity, more uniform density, more stable physical properties, and is more environmentally friendly.

[0015] 2. The present invention uses phenol, formaldehyde, urea and water to react in a reactor at high temperature to produce phenolic resin, and uses melamine, formaldehyde, water and additives to react in a reactor at high temperature to produce triamine resin. After impregnation of kraft paper and decorative surface paper, the elastic modulus is improved and the deformation resistance is stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of the present invention.

[0017] Among them: 1. Kraft paper; 2. Decorative paper. DETAILED DESCRIPTION

[0018] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the examples. The examples are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0019] Example 1 according to Figure 1 As shown, this embodiment provides a billiard table top formed by high temperature and high pressure molding of kraft paper impregnation, comprising kraft paper 1 and decorative surface paper 2. The kraft paper 1 is impregnated with phenolic resin and dried at high temperature, and the kraft paper 1 has multiple layers. The decorative surface paper 2 is impregnated with triamine resin and dried at high temperature, and is located on the surface of the multi-layer kraft paper 1; The multiple layers of kraft paper 1 and decorative surface paper 2 are fixed by heat pressing and trimmed by sawing.

[0020] The phenolic resin is produced by reacting phenol, formaldehyde, urea, and water in a reactor at high temperature. The phenolic resin comprises the following components by weight: 45 parts phenol, 60 parts formaldehyde, 8 parts urea, and 15 parts water. During the high-temperature reaction, the phenolic resin is heated at 80-100°C for 1 hour for hydroxymethylation and at 140-160°C for 0.5 hour for polycondensation.

[0021] The triamine resin is produced by reacting melamine, formaldehyde, water, and additives in a high-temperature reactor. The triamine resin comprises the following components by weight: 35 parts melamine, 75 parts formaldehyde, 10 parts water, and 3 parts additives, including a leveling agent and a defoamer. During the high-temperature reaction, melamine, one-third formaldehyde, and water are added for a pre-reaction at 80-85°C. The remaining formaldehyde and additives are then added to maintain a target viscosity of 200-300 mPa·s (25°C).

[0022] Kraft paper 1 is pure wood pulp paper and is impregnated with phenolic resin and dried at high temperature to achieve a 60% glue content and 7-10% volatile matter. Decorative face paper 2 is impregnated with triamine resin and dried at high temperature to achieve a 60-65% glue content and 7-10% volatile matter. The layers of kraft paper 1 and decorative face paper 2 are then placed in a hot press, where they are pressed and formed at 135-145°C, 24 MPa, and a reaction time of 90 minutes. Treatment of pure wood pulp kraft paper 1: Before impregnation, the paper is corona treated (surface tension ≥ 42 dyn / cm) to enhance resin permeability. A 60% glue content is achieved using a three-roll reverse coating method with a metering roll gap accuracy of ±0.01mm and coating speed controlled in conjunction with the drying gradient. Special requirements for decorative face paper 2: 0.5%-1% titanium dioxide (rutile) is added to the impregnation solution to enhance hiding power, and the dispersed colorant particle size is ≤1μm. The volatile matter control adopts the combination of infrared pre-drying + hot air circulation: infrared wavelength 2.5-4μm (matching the resin absorption peak), hot air temperature gradient 120℃→150℃→170℃.

[0023] Example 2 according to Figure 1 As shown, this embodiment provides a billiard table top formed by high temperature and high pressure molding of kraft paper impregnation, comprising kraft paper 1 and decorative surface paper 2. The kraft paper 1 is impregnated with phenolic resin and dried at high temperature, and the kraft paper 1 has multiple layers. The decorative surface paper 2 is impregnated with triamine resin and dried at high temperature, and is located on the surface of the multi-layer kraft paper 1; The multiple layers of kraft paper 1 and decorative surface paper 2 are fixed by heat pressing and trimmed by sawing.

[0024] The phenolic resin is produced by reacting phenol, formaldehyde, urea, and water in a reactor at high temperature. The phenolic resin comprises the following components by weight: 48 parts phenol, 65 parts formaldehyde, 10 parts urea, and 20 parts water. During the high-temperature reaction, the phenolic resin is heated at 80-100°C for 1.5 hours for hydroxymethylation and at 140-160°C for 0.8 hours for polycondensation.

[0025] The triamine resin is produced by reacting melamine, formaldehyde, water, and additives in a high-temperature reactor. The triamine resin comprises the following components by weight: 38 parts melamine, 70 parts formaldehyde, 15 parts water, and 4 parts additives, including a leveling agent and a defoamer. During the high-temperature reaction, melamine, one-third formaldehyde, and water are added for a pre-reaction at 80-85°C. The remaining formaldehyde and additives are then added to maintain a target viscosity of 200-300 mPa·s (25°C).

[0026] Kraft paper 1 is pure wood pulp paper and is impregnated with phenolic resin and dried at high temperature to achieve a 60% glue content and 7-10% volatile matter. Decorative face paper 2 is impregnated with triamine resin and dried at high temperature to achieve a 60-65% glue content and 7-10% volatile matter. The layers of kraft paper 1 and decorative face paper 2 are then placed in a hot press, where they are pressed and formed at 135-145°C, 24 MPa, and a reaction time of 90 minutes. Treatment of pure wood pulp kraft paper 1: Before impregnation, the paper is corona treated (surface tension ≥ 42 dyn / cm) to enhance resin permeability. A 60% glue content is achieved using a three-roll reverse coating method with a metering roll gap accuracy of ±0.01mm and coating speed controlled in conjunction with the drying gradient. Special requirements for decorative face paper 2: 0.5%-1% titanium dioxide (rutile) is added to the impregnation solution to enhance hiding power, and the dispersed colorant particle size is ≤1μm. The volatile matter control adopts the combination of infrared pre-drying + hot air circulation: infrared wavelength 2.5-4μm (matching the resin absorption peak), hot air temperature gradient 120℃→150℃→170℃.

[0027] Example 3 according to Figure 1 As shown, this embodiment provides a billiard table top formed by high temperature and high pressure molding of kraft paper impregnation, comprising kraft paper 1 and decorative surface paper 2. The kraft paper 1 is impregnated with phenolic resin and dried at high temperature, and the kraft paper 1 has multiple layers. The decorative surface paper 2 is impregnated with triamine resin and dried at high temperature, and is located on the surface of the multi-layer kraft paper 1; The multiple layers of kraft paper 1 and decorative surface paper 2 are fixed by heat pressing and trimmed by sawing.

[0028] The phenolic resin is produced by reacting phenol, formaldehyde, urea, and water in a reactor at high temperature. The phenolic resin comprises the following components by weight: 50 parts phenol, 70 parts formaldehyde, 12 parts urea, and 25 parts water. During the high-temperature reaction, the phenolic resin is heated at 80-100°C for 2 hours for hydroxymethylation and at 140-160°C for 1 hour for polycondensation.

[0029] The triamine resin is produced by reacting melamine, formaldehyde, water, and additives in a high-temperature reactor. The triamine resin comprises the following components by weight: 40 parts melamine, 85 parts formaldehyde, 20 parts water, and 5 parts additives, including a leveling agent and a defoamer. During the high-temperature reaction, melamine, one-third formaldehyde, and water are added for a pre-reaction at 80-85°C. The remaining formaldehyde and additives are then added to maintain a target viscosity of 200-300 mPa·s (25°C).

[0030] Kraft paper 1 is pure wood pulp paper and is impregnated with phenolic resin and dried at high temperature to achieve a 60% glue content and 7-10% volatile matter. Decorative face paper 2 is impregnated with triamine resin and dried at high temperature to achieve a 60-65% glue content and 7-10% volatile matter. The layers of kraft paper 1 and decorative face paper 2 are then placed in a hot press, where they are pressed and formed at 135-145°C, 24 MPa, and a reaction time of 90 minutes. Treatment of pure wood pulp kraft paper 1: Before impregnation, the paper is corona treated (surface tension ≥ 42 dyn / cm) to enhance resin permeability. A 60% glue content is achieved using a three-roll reverse coating method with a metering roll gap accuracy of ±0.01mm and coating speed controlled in conjunction with the drying gradient. Special requirements for decorative face paper 2: 0.5%-1% titanium dioxide (rutile) is added to the impregnation solution to enhance hiding power, and the dispersed colorant particle size is ≤1μm. The volatile matter control adopts the combination of infrared pre-drying + hot air circulation: infrared wavelength 2.5-4μm (matching the resin absorption peak), hot air temperature gradient 120℃→150℃→170℃.

[0031] According to Example 1, Example 2 and Example 3, the present invention uses the following components in a mass ratio: 45-50 parts of phenol, 60-70 parts of formaldehyde, 8-12 parts of urea, 15-25 parts of water; 35-40 parts of melamine, 75-85 parts of formaldehyde, 10-20 parts of water and 3-5 parts of an additive; the phenolic resin and triamine resin prepared are used to impregnate kraft paper 1 and decorative surface paper 2 respectively, thereby improving the elastic modulus and enhancing the deformation resistance.

[0032]

[0033] Example 4 according to Figure 1 As shown, this embodiment proposes a support frame, which is composed of the billiard table side formed by the above-mentioned kraft paper impregnated with glue and formed at high temperature and high pressure. It has higher hardness, more suitable elasticity, more uniform density, more stable physical properties, and is suitable for long-term use of the billiard table.

[0034] The present invention uses phenolic resin and triamine resin to impregnate pure wood pulp kraft paper 1 and decorative surface paper 2, while quantitatively controlling the amount of glue and volatile matter on the kraft paper 1 and decorative surface paper 2. After impregnation, the kraft paper 1 and decorative surface paper 2 are quantitatively organized and fed into a hot press. After a hot pressing cycle, the paper is sawn and trimmed to form a board body for a billiard table side. Compared with existing wood materials, the present invention has higher hardness, more suitable elasticity, more uniform density, more stable physical properties, and is more environmentally friendly. Furthermore, the present invention uses phenol, formaldehyde, urea, and water to react in a reactor at high temperature to produce the phenolic resin, and uses melamine, formaldehyde, water, and an additive to react in a reactor at high temperature to produce the triamine resin. After impregnation of the kraft paper 1 and decorative surface paper 2, the elastic modulus is increased and the deformation resistance is enhanced.

[0035] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A billiard table top formed by high temperature and high pressure molding of kraft paper impregnated with glue, comprising kraft paper (1) and decorative surface paper (2), characterized in that: The kraft paper (1) is impregnated with phenolic resin and dried at high temperature, and the kraft paper (1) is provided with multiple layers; The decorative surface paper (2) is impregnated with triamine resin and dried at high temperature, and the decorative surface paper (2) is located on the surface layer of the multiple layers of kraft paper (1); The multiple layers of kraft paper (1) and decorative surface paper (2) are fixed by heat pressing and trimmed by sawing.

2. The billiard table side formed by high temperature and high pressure molding of kraft paper impregnated with glue according to claim 1, characterized in that: The phenolic resin is produced by reacting phenol, formaldehyde, urea and water in a reactor at high temperature.

3. The billiard table side formed by high temperature and high pressure molding of kraft paper impregnated with glue according to claim 2, characterized in that: The phenolic resin comprises the following components in a mass ratio: 45-50 parts of phenol, 60-70 parts of formaldehyde, 8-12 parts of urea, and 15-25 parts of water.

4. The billiard table side formed by high temperature and high pressure molding of kraft paper impregnated with glue according to claim 3, characterized in that: During the high-temperature reaction, the phenolic resin is kept at 80-100° C. for 1-2 hours for hydroxymethylation, and kept at 140-160° C. for 0.5-1 hour for polycondensation.

5. The billiard table side formed by high temperature and high pressure molding of kraft paper impregnated with glue according to claim 1, characterized in that: The triamine resin is produced by reacting melamine, formaldehyde, water and an auxiliary agent in a reactor at high temperature.

6. The billiard table side formed by high temperature and high pressure molding of kraft paper impregnated with glue according to claim 5, characterized in that: The triamine resin comprises the following components in a mass ratio: 35-40 parts of melamine, 75-85 parts of formaldehyde, 10-20 parts of water and 3-5 parts of an auxiliary agent, wherein the auxiliary agent is a leveling agent and a defoaming agent.

7. The billiard table side formed by high temperature and high pressure molding of kraft paper impregnated with glue according to claim 6, characterized in that: During the high-temperature reaction of the triamine resin, melamine, one-third of formaldehyde and water are first added for pre-reaction at 80-85°C, and then the remaining formaldehyde and additives are added to control the target viscosity of the triamine resin to 200-300 mPa·s (25°C).

8. The billiard table side formed by high temperature and high pressure molding of kraft paper impregnated with glue according to claim 1, characterized in that: The kraft paper (1) is pure wood pulp paper, and the kraft paper (1) is impregnated with phenolic resin and dried at high temperature, with the glue content controlled to be 60% and the volatile matter to be 7-10%. The decorative surface paper (2) is impregnated with triamine resin and dried at high temperature, with the glue content controlled to be 60-65% and the volatile matter to be 7-10%.

9. The billiard table side formed by high temperature and high pressure molding of kraft paper impregnated with glue according to claim 8, characterized in that: The multiple layers of kraft paper (1) and decorative surface paper (2) enter a hot press and are pressed into shape at a high temperature of 135-145°C, a high pressure of 24 MPa, and a reaction time of 90 minutes.

10. A support frame, characterized in that: The billiard table side is formed by splicing the kraft paper dipped in glue and formed at high temperature and high pressure as described in any one of claims 1 to 9.

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