阅读说明：本技术 一种超柔软防火板生产方法 (Production method of super-soft fireproof plate ) 是由 赵崇联 李立君 陈博东 常亮 杨旭 李宝兰 方雪涛 徐淑聃 王钦禾 王泽伟 黄镜 于 2021-09-09 设计创作，主要内容包括：本发明公开了一种超柔软防火板生产方法,包括依次设置的浸渍生产线和防火板生产线,其中浸渍生产线的操作步骤如下：S1、开卷：按照备料顺序打开待用原纸包装；S2、接纸；S3、浸胶：浸胶过程有预浸轴、呼吸辊、浸胶池、计量辊、扫平、调偏、刮边七个环节；S4、经过一次干燥、冷却后涂胶,再经过二次干燥、冷却；S5、调偏：齐纸辊将烘干冷却后的浸渍胶膜纸进行调偏处理；S6、冷却：冷却辊的冷却方式为循环水冷却,对浸渍胶膜纸降至常温；S7、复卷：通过复纸辊进行复卷包装下线,检查合格后,码垛整齐。本发明采用上述的一种超柔软防火板生产方法,方法简单,可以保证饰面表面物理性能的前提下完成对R1角及直角的包覆。(The invention discloses a production method of an ultra-soft fireproof plate, which comprises a dipping production line and a fireproof plate production line which are sequentially arranged, wherein the dipping production line comprises the following operation steps: s1, uncoiling: opening raw paper packages for standby according to the material preparation sequence; s2, splicing paper; s3, gum dipping: the gum dipping process comprises seven links of a pre-dipping shaft, a breathing roller, a gum dipping pool, a metering roller, leveling, deviation adjustment and edge scraping; s4, coating the adhesive after primary drying and cooling, and then secondary drying and cooling; s5, deviation adjustment: the paper aligning roller carries out deviation adjustment treatment on the dried and cooled impregnated bond paper; s6, cooling: the cooling mode of the cooling roller is circulating water cooling, and the impregnated bond paper is cooled to normal temperature; s7, rewinding: rewinding packaging and inserting the bobbin through the paper rewinding roller, and after the bobbin is inspected to be qualified, stacking is neat. The production method of the super-soft fireproof plate is simple, and can complete the coating of the R1 angle and the right angle on the premise of ensuring the physical property of the surface of the decorative surface.)

1. The production method of the super-soft fireproof plate is characterized by comprising an impregnation production line and a fireproof plate production line which are sequentially arranged, wherein the impregnation production line comprises the following operation steps:

s1, uncoiling: opening raw paper packages for standby according to the material preparation sequence;

s2, splicing: the dipping linear speed is adjusted slowly, and the gap of a metering roller is adjusted to be large, so that the joint is prevented from being disconnected;

s3, gum dipping: the glue dipping process comprises seven links of a pre-dipping shaft, a breathing roller, a glue dipping tank, a metering roller, sweeping, deviation adjustment and edge scraping, the working section relates to glue blending, the glue solution in the glue dipping tank is MDI glue, 3-5 per mill of penetrant is added, the rest additives are not used, 4 cups of glue dipping viscosity is 25 ℃, and 13-14s is coated;

s4, coating the adhesive after primary drying and cooling, and then secondary drying and cooling;

the first drying and the second drying are mainly to remove part of moisture in the impregnated bond paper, and the first cooling and the second cooling are as follows: cooling the first cooler with 2 sections of coolers and the second cooler with 1 section of coolers, and cooling the impregnated bond paper in the drying box;

the glue solution of the gluing process is recycled, the glue solution is amine glue, the gluing amount is adjusted by a metering roller, and the amine glue enters a drying box after being scraped;

s5, deviation adjustment: the aligning roller carries out deviation adjustment treatment on the dried and cooled impregnated bond paper, and the tension is adjusted through a traction roller;

s6, cooling: the cooling mode of the cooling roller is circulating water cooling, and the impregnated bond paper is cooled to normal temperature;

s7, rewinding: rewinding packaging and discharging the paper off line through a paper rewinding roller, and regularly stacking the impregnated film paper orderly after the paper is qualified.

2. The method for producing an ultra-soft fire-retardant plate according to claim 1, wherein: in step S1, during material preparation, plain color paper with similar base paper grammage or printing decorative paper with light color is produced first, and plain color paper with dark color or printing decorative paper with easy fading is produced later, so as to control the adjustment of sizing amount and color difference in the dipping process.

3. The method for producing an ultra-soft fire-retardant plate according to claim 1, wherein: in step S3, the breathing roller is bent to discharge air from the pores of the base paper fiber, so that the glue solution can be better impregnated into the base paper; the temperature of the impregnation tank is 25 ℃; the metering roller adjusts the gluing amount of the base paper gum dipping; after gluing, the impregnated paper is subjected to leveling, deviation adjustment and edge scraping.

4. The method for producing an ultra-soft fire-retardant plate according to claim 1, wherein: in step S4, a drying box with 3 sections is dried, and the temperature thereof is adjusted according to the actual production environment and is respectively 133-138 ℃, 140-146 ℃ and 128-135 ℃ in sequence; the dehumidifying frequency is 19-21HZ, and the fan frequency is 28-30HZ, 28-32HZ and 26-30HZ respectively;

the second drying step comprises 3 sections of drying boxes, the temperature of which is regulated according to the actual production environment and is respectively 122-127 ℃, 122-127 ℃ and 119-125 ℃, the dehumidification frequency is 21-23HZ, and the fan frequency is 23-27HZ, 26-30HZ and 33-38 HZ;

the drying box is heated by hot oil, a built-in fan motor controls circulating air to carry out heat preservation and dehumidification, the speed is 14-16m/min, and the paper in the drying box is in a microwave wave shape.

5. The method for producing an ultra-soft fire-retardant plate according to claim 1, wherein: the gum dipping amount in the step S3 is 20-30g, the upper gum coating amount in the step S4 is 18-23g, and the lower gum coating amount is 15-18 g.

6. The method for producing an ultra-soft fire-retardant plate according to claim 1, wherein: in step S7, the volatile content of the impregnated paper of the rewinding impregnated paper is 3.0-4.5%, and the pre-curing degree is 50-60%.

7. The method for producing the ultra-soft fireproof plate according to claim 1, wherein the production process of the fireproof plate line comprises the following steps:

s1, reeling: fixing the impregnated bond paper and the non-woven fabric on a corresponding upper paper shaft, wherein the pressure of the non-woven fabric is 1-1.5bar during winding; the pressure of the impregnated bond paper is 0.1-0.2 bar;

s2, paper feeding: the prepared paper is overlapped with the finished paper when being connected;

s3, hot-pressing host: the heating mode is hot oil temperature rise, the temperature of SEK1, SEK2, SEK3 and SEK5 is 180-185 ℃, 175-180 ℃, 170-175 ℃, 180-185 ℃ respectively, and the pressure is 17-20 bar;

s4, paper discharge: conveying the fireproof plate out of the hot-pressing main machine, and separating the fireproof plate from release paper when producing the fireproof plate with the surface state of embossment;

s5, cooling roller: the cooling mode is circulating water cooling, and the temperature is 21-23 ℃;

s6, edge trimmer: the production needs the use of cutting size;

s7, rewinding machine: and rewinding and packaging the produced fireproof plate.

Technical Field

The invention relates to the technical field of fireproof plate processing, in particular to a production method of an ultra-soft fireproof plate.

Background

At present, based on the fire safety consideration of modern building and public places, various fireproof plates must be used in the decoration of public places such as domestic houses, various hotels, office and business buildings at home and abroad.

In the prior art, the hardness of the decorative material of the fireproof plate is relatively hard, the edge sealing of the decorative artificial plate is limited, and the coating of an R1 angle and the right-angle coating cannot be met.

In addition, the conventional fireproof plate is prepared by impregnating urea formaldehyde and melamine formaldehyde resin in rewinding impregnating paper, the impregnating paper made of the melamine formaldehyde resin can improve the hardness after rewinding, and the rewinding fireproof plate produced by the produced fireproof plate product through a fireproof plate press further increases the hardness of the material through secondary curing of glue, so that the cracking phenomenon can occur when an R1 angle and a right angle are coated.

Disclosure of Invention

The invention aims to provide a production method of an ultra-soft fireproof plate, which is simple and can complete the coating of an R1 angle and a right angle on the premise of ensuring the physical properties of a surface of a facing.

In order to achieve the aim, the invention provides a production method of an ultra-soft fireproof plate, which comprises an impregnation production line and a fireproof plate production line which are sequentially arranged, wherein the impregnation production line comprises the following operation steps:

s1, uncoiling: opening raw paper packages for standby according to the material preparation sequence;

s2, splicing: the dipping linear speed is adjusted slowly, and the gap of a metering roller is adjusted to be large, so that the joint is prevented from being disconnected;

s3, gum dipping: the glue dipping process comprises seven links of a pre-dipping shaft, a breathing roller, a glue dipping tank, a metering roller, sweeping, deviation adjustment and edge scraping, the working section relates to glue blending, the glue solution in the glue dipping tank is MDI glue, 3-5 per mill of penetrant is added, the rest additives are not used, 4 cups of glue dipping viscosity is 25 ℃, and 13-14s is coated;

s4, drying I and drying II: the method mainly comprises the steps of removing partial moisture in the impregnated bond paper;

s5, cooling I, cooling II: cooling the first cooler with 2 sections of coolers and the second cooler with 1 section of coolers, and cooling the impregnated bond paper in the drying box;

s6, gluing: the glue solution of the gluing process is recycled, the glue solution is amine glue, the gluing amount is adjusted by a metering roller, and the amine glue enters a drying box after being scraped;

s7, deviation adjustment: the paper aligning roller carries out deviation adjustment treatment on the dried and cooled impregnated bond paper;

s8, traction: the tension is adjusted through a traction roller;

s9, cooling: the cooling mode of the cooling roller is circulating water cooling, and the impregnated bond paper is cooled to normal temperature;

s10, rewinding: rewinding, packaging and discharging through a rewinding roller;

s11, stacking: after the paper is qualified, the impregnated bond paper is regularly and neatly stacked.

Preferably, in step S1, during material preparation, plain color paper with similar base paper grammage or printing decorative paper with light color is produced first, and plain color paper with dark color or printing decorative paper with easy fading is produced later according to the sequence, so as to control the adjustment of sizing amount and color difference in the dipping process.

Preferably, in step S3, the breathing roller is bent to discharge air in the pores of the base paper fibers, so that the glue solution can be better soaked into the base paper; the temperature of the impregnation tank is 25 ℃; the metering roller adjusts the gluing amount of the base paper gum dipping; after gluing, the impregnated paper is subjected to leveling, deviation adjustment and edge scraping.

Preferably, in step S4, a drying box with 3 sections is dried, and the temperatures thereof are adjusted according to the actual production environment, and are respectively 133-; the dehumidifying frequency is 19-21HZ, and the fan frequency is 28-30HZ, 28-32HZ and 26-30HZ respectively;

preferably, in step S10, the rewinded impregnated paper has an impregnated paper volatile content of 3.0-4.5% and a precuring degree of 50-60%.

Preferably, the gum dipping amount in the step S3 is 20-30g, the upper gum coating amount in the step S6 is 18-23g, and the lower gum coating amount is 15-18 g.

The second drying step comprises 3 sections of drying boxes, the temperature of which is regulated according to the actual production environment and is respectively 122-127 ℃, 122-127 ℃ and 119-125 ℃, the dehumidification frequency is 21-23HZ, and the fan frequency is 23-27HZ, 26-30HZ and 33-38 HZ;

the drying box is heated by hot oil, a built-in fan motor controls circulating air to carry out heat preservation and dehumidification, the speed is 14-16m/min, and the paper in the drying box is in a microwave wave shape.

Preferably, the production process steps of the fireproof plate line are as follows:

s1, reeling: fixing the impregnated bond paper and the non-woven fabric on a corresponding upper paper shaft, wherein the pressure of the non-woven fabric is 1-1.5bar during winding; the pressure of the impregnated bond paper is 0.1-0.2bar, the pressure is small, the impregnated bond paper is easy to wrinkle, and the pressure is large and easy to break; the pressure of the release paper is generally 1bar, and the pressure with good tension is 2.0-3.0 bar;

s2, paper feeding: the prepared paper and the finished paper are overlapped by a certain number of meters (only 0.2-0.5 meter is needed, so that waste is avoided and overlong is avoided), and in order to prevent paper from breaking, the gap between steel belts is very small, and the paper breaks to generate friction and damage the steel belts; the non-woven fabric is wider than the impregnated bond paper, and the non-woven fabric and the impregnated bond paper enter the hot-pressing main machine in parallel to prevent edge breakage;

s3, hot-pressing host: the heating mode is hot oil temperature rise, the temperature of SEK1, SEK2, SEK3 and SEK5 is 180-185 ℃, 175-180 ℃, 170-175 ℃, 180-185 ℃ respectively, and the pressure is 17-20 bar;

s4, paper discharge: conveying the fireproof plate out of the hot-pressing main machine, and separating the fireproof plate from release paper when producing the fireproof plate with the surface state of embossment;

s5, cooling roller: the cooling mode is circulating water cooling, and the temperature is 21-23 ℃;

s6, sanding machine: the device is used for producing the fireproof plate with the paper thickness of more than 0.35mm, and the device is not used in the process of the super-soft fireproof plate, except special requirements;

s7, edge trimmer: the production needs the use of cutting size;

s8, rewinding machine: and rewinding and packaging the produced fireproof plate.

Therefore, the production method of the super-soft fireproof plate provided by the invention has the advantages that the urea-formaldehyde glue and the melamine-formaldehyde resin mixed glue are replaced by the MDI glue, the use of small mixed glue materials is reduced, the softness of the produced rewinding impregnated paper is higher, and the production cost is reduced. Meanwhile, MDI does not contain formaldehyde, the content of the formaldehyde is expected to be reduced by 15 percent, the R1 angle and right angle can be coated, the color difference in the production of furniture products can not be caused, and the production is convenient.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

FIG. 1 is a flow chart of the production steps of the dipping line in the method for producing the ultra-soft fireproof plate according to the invention;

FIG. 2 is a flow chart illustrating the steps of glue dipping in the method for producing the ultra-soft fireproof plate according to the present invention;

FIG. 3 is a flow chart of the production steps of the fire-proof plate line in the method for producing the ultra-soft fire-proof plate.

Detailed Description

The technical solution of the present invention is further illustrated by the accompanying drawings and examples.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

As shown in the figure, the production method of the super-soft fire-proof plate comprises an impregnation production line and a fire-proof plate production line which are sequentially arranged.

Wherein, the production process flow of the dipping line is as follows:

unwinding: the base paper comprises plain color paper and printing decorative paper, and the weight of the base paper is 70g, 75g, 80g, 85g, 90g, 100g, 105g and 110 g. And opening the base paper package for standby according to the material preparation sequence, firstly producing plain color paper with similar gram weight of the base paper or printing decorative paper with light color according to the order urgency degree during material preparation, and then producing plain color paper with deep color or printing decorative paper easy to fade so as to control the gluing amount adjustment and color difference in the dipping process. Weighing the base paper before and after use, registering, delivering into a warehouse, marking, and checking the quality of the base paper.

Paper splicing: the dipping linear speed is adjusted slowly, and the gap of a metering roller is adjusted to be large, so that the joint is prevented from being disconnected;

thirdly, gum dipping: the gum dipping process comprises seven links of a pre-dipping shaft, a breathing roller, a gum dipping pool, a metering roller, leveling, deviation adjustment and edge scraping.

The shape of the breathing roller is bent, and the breathing roller has the function of discharging air in the pores of the base paper fibers, so that the glue solution can be better soaked into the base paper; the temperature of the impregnation tank is 25 ℃; the metering roller is used for adjusting the gluing amount of the base paper gum dipping; after gluing, the impregnated paper is subjected to leveling, deviation adjustment and edge scraping. The working section relates to a glue blending process, glue solution in a glue dipping pool is respectively blended according to slicing and rewinding, and glue used in a glue dipping link is used for developing an ultra-soft fireproof plate and is adjusted from original urea glue to MDI glue.

Fourthly, drying I and drying II: the first drying section comprises 3 drying boxes (the temperature is regulated according to the actual production environment and is respectively 133-138 ℃, 140-146 ℃ and 128-135 ℃), the second drying section comprises 3 drying boxes (the temperature is regulated according to the actual production environment and is respectively 122-127 ℃, 122-127 ℃ and 119-125 ℃), and the corresponding fan frequencies of the drying boxes are respectively 28-30HZ, 28-32HZ, 26-30HZ, 23-27HZ, 26-30HZ and 33-38 HZ.

The heating mode of the drying box is heating by hot oil, a built-in fan motor controls circulating air to carry out heat preservation and dehumidification, the dehumidification frequency of the first drying and the second drying is 19-21HZ and 21-23HZ respectively, and the speed is 15 m/min. The paper in the drying box is in a microwave wave shape, the effect is mainly to remove partial moisture in the impregnated bond paper, the drying degree has great influence on the volatile matter and the pre-curing degree of a finished product, and the parameter adjustment of the fire-proof plate in the later period is influenced critically.

Cooling I and cooling II: and 2 sections of coolers are arranged on the first cooling part, 1 section of cooler is arranged on the second cooling part, and the impregnated bond paper in the drying box is cooled.

Glue spreading: the glue solution of the gluing process is recycled, the gluing amount is adjusted through a metering roller, and the glue solution enters a drying box after being scraped.

And seventhly, deviation adjustment: and (5) the paper aligning roller performs deviation adjustment treatment on the dried and cooled impregnated bond paper.

And eighthly, traction: the tension is adjusted by the traction roller.

Ninthly, cooling: the cooling mode of the cooling roller is circulating water cooling, and the impregnated bond paper is cooled to normal temperature.

R rewinding: the rewinding packaging and the off-line are carried out through the paper rewinding roller, and the speed can be adjusted according to the gram weight and the quality of the base paper.

Stacking: inspecting the quality problems of the impregnated bond paper, such as size, color aberration, stain, glue bubble, glue powder, wrinkle, edge breakage and the like; carrying out experimental detection by slicing/rewinding, packaging and stacking personnel; the impregnated bond paper is regularly stacked.

In the two-time gluing in the dipping line production process, one dipping glue is MDI glue, and the gluing amount is 20-30 g; the second coating still uses the amine glue used in the original production process, the coating weight of the second coating is 18-23g, and the coating weight of the second coating is 15-18 g. The MDI glue for one dipping is prepared by adding 3.0-5.0 thousandths of penetrating agent into MDI raw glue, specifically determined by the color register layer number of the printing ink produced by the raw paper, not using other additives, and coating 4 cups of viscosity, wherein the first dipping viscosity is 13s-14s at 25 ℃. The amine glue additive is added according to the production process of rewinding impregnated paper of a normal fireproof plate. And, rewinding impregnated paper index: volatile matter of impregnated paper: 3.0-4.5%, precure degree: 50 to 60 percent.

The production process flow of the fireproof plate line comprises the following steps:

rolling: and fixing the impregnated bond paper and the non-woven fabric on the corresponding upper paper shaft. The pressure of the non-woven fabric is 1-1.5bar when the non-woven fabric is rolled up; the pressure of the impregnated bond paper is 0.1-0.2bar, if the pressure is small, the impregnated bond paper is easy to wrinkle, and if the pressure is large, the impregnated bond paper is easy to break; the pressure of the release paper is generally 1bar, and the pressure with good tension can reach 2.0-3.0 bar.

Paper feeding: the prepared paper and the finished paper are overlapped for a certain number of meters (only 0.2-0.5 meter is needed, waste is avoided, overlong is not needed), in order to prevent paper from being broken, the gap of the steel belt is very small, and if the paper is broken, friction is generated to damage the steel belt. The non-woven fabrics are wider than the impregnated bond paper, and the non-woven fabrics and the impregnated bond paper enter the hot-pressing host in parallel to prevent edge breakage.

Thirdly, hot-pressing the main machine: the heating mode is hot oil temperature rise, and the temperatures of SEK1, SEK2, SEK3 and SEK5 are 180-185 ℃, 175-180 ℃, 170-175 ℃ and 180-185 ℃ respectively; the pressure is 17-20 bar. The surface state of the steel belt is an upper steel belt smooth surface and a lower steel belt pitted surface.

Fourthly, discharging: the fireproof plate is conveyed out of the hot pressing host machine, and the fireproof plate and the release paper are separated when the fireproof plate with the embossed surface state is produced.

Cooling the roller: the cooling mode is circulating water cooling, and the temperature is 22 ℃.

Sixthly, the sander: the fireproof plate such as kraft paper with the thickness of more than 0.35mm is used for producing the fireproof plate and is not used at ordinary times.

Seventh, edge trimmer: the production needs the use of cutting size and is not used in normal times.

Eighthly, rewinding machine: and rewinding and packaging the produced fireproof plate.

Therefore, the method for producing the super-soft fireproof plate is simple, and the coating of the R1 angle and the right angle can be finished on the premise of ensuring the physical properties of the surface of the decorative surface.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the invention without departing from the spirit and scope of the invention.