Preparation method of steel plate grain veneering paper

Abstract

The invention discloses a preparation method of steel plate grain veneering paper, and relates to the technical field of preparation of steel plate grain veneering paper.The preparation method comprises the steps that firstly, a fiber raw material, titanium dioxide, a wet strength agent, an internal sizing agent, veneering paper waste paper pulp, kraft paper waste paper pulp, beating enzyme, long fiber pulp auxiliary materials and other needed raw materials and auxiliary solvents are mixed; the components in corresponding proportions are weighed in real time through a special instrument according to the weight parts of the components, and the weighed long fiber pulp auxiliary materials and the weighed fiber raw materials are ground into powder through professional grinding equipment. According to the preparation method, a proper amount of sizing agent is added into the raw materials and adopts thermoplastic degradable resin, and a proper amount of wet strength agent is added for mutual cooperation, so that the waterproof and antifouling effects of the steel plate grain veneering paper in the preparation process can be effectively improved, and meanwhile, the properties such as overall tensile strength and smoothness of the steel plate grain veneering paper are better; and the raw paper can be kept in a soft state and can be molded into any shape to be matched with the surfaces of steel plates with various different shapes.

Description

Technical Field

[0001] The invention relates to the technical field of steel plate pattern veneer paper preparation, in particular to a method for preparing steel plate pattern veneer paper. Background Art

[0002] Steel plate is a flat steel material that is poured with molten steel and pressed after cooling. It is flat and rectangular and can be directly rolled or cut from wide steel strips. Steel plates are divided into thin steel plates <4 mm (the thinnest is 0.2 mm), medium and thick steel plates 4 to 60 mm, and extra thick steel plates 60 to 115 mm according to thickness. Steel plates are divided into hot rolling and cold rolling according to rolling. The width of thin plates is 500 to 1500 mm; the width of thick plates is 600 to 3000 mm. Thin plates are divided into ordinary steel, high-quality steel, alloy steel, spring steel, stainless steel, tool steel, heat-resistant steel, bearing steel, silicon steel and industrial pure iron thin plates according to steel types; according to professional use, there are plates for oil drums, enamel plates, bulletproof plates, etc.; according to surface coating, there are galvanized thin plates, tinned thin plates, lead-plated thin plates, plastic composite steel plates, etc. Steel plate grain veneer paper is a material used to protect the surface of steel plates.

[0003] The current steel plate veneer paper has poor strength during daily use and is prone to damage and falling off after long-term use. At the same time, the cost of preparing high-strength steel plate veneer paper is high, and stains are easily present on the surface of the steel plate veneer paper during the preparation process. The tensile strength and smoothness of the steel plate veneer paper are not very good either. Summary of the invention

[0004] The purpose of the present invention is to provide a method for preparing steel plate grain veneer paper, so as to solve the problems raised in the above background technology that the current steel plate grain veneer paper has poor strength during daily use and is easily damaged and fallen off after long-term use. At the same time, the cost of preparing high-strength steel plate grain veneer paper is high, and stains are easily present on the surface of the steel plate grain veneer paper during the preparation process, and the properties such as tensile strength and smoothness of the steel plate grain veneer paper are not very good.

[0005] To achieve the above object, the present invention provides the following technical solution: a steel plate pattern veneer paper, wherein the raw materials for preparing the steel plate pattern veneer paper are as follows:

[0006] Fiber raw materials: 200-250 parts;

[0007] Titanium dioxide: 90-110 parts;

[0008] Retention aid: 0.2-0.3 parts;

[0009] Wet strength agent: 11-12 parts;

[0010] Internal sizing agent: 6-8 parts;

[0011] Veneer paper waste pulp: 30-40 parts;

[0012] Kraft paper waste pulp: 20-30 parts;

[0013] Beating enzyme: 15-25 parts;

[0014] Long fiber pulp auxiliary material: 40-55 parts.

[0015] Preferably, a method for preparing steel plate pattern veneer paper comprises the following steps:

[0016] S1. First, the raw materials and auxiliary solvents required, such as fiber raw materials, titanium dioxide, wet strength agent, pulp sizing agent, veneer paper waste pulp, kraft paper waste pulp, beating enzyme and long fiber pulp auxiliary materials, are weighed in real time according to the weight ratio of the components through a dedicated instrument. The weighed long fiber pulp auxiliary materials and fiber raw materials are ground into powder through professional grinding equipment and placed in corresponding storage containers for standby use.

[0017] S2. Then, the weighed and proportioned veneer paper waste pulp, kraft paper waste pulp and fiber raw materials are introduced into a waste paper pulper in a corresponding order for pulping, and a suitable mass concentration of pulping enzyme is slowly added during the pulping, and the pulping temperature is controlled within a corresponding range, and the pH of the pulping enzyme is controlled within a corresponding range, so as to prepare a waste paper pulp with a beating degree of 33 to 36°, and the beaten pulp is successively passed through a coarse screen and a slag remover to remove impurities, and the pulp after impurity removal is transported to a grading screen.

[0018] S3. Finally, the filtered and sieved pulp is introduced into the heating device, and the pulp is heated by the heating device. During the heating process, retention aid, wet strength agent, sizing agent in pulp and long fiber pulp auxiliary material are sequentially added into the pulp and stirred in real time, so that the retention aid, wet strength agent, sizing agent in pulp and long fiber pulp auxiliary material can be quickly integrated together. The mixed pulp is vacuum dehydrated, and then pressed and dehydrated. The base paper is obtained after drying and dehydration. The obtained base paper is surface-sizing with a sizing agent, and after drying, it is calendered to obtain pre-impregnated steel plate pattern veneer paper.

[0019] Preferably, the temperature range of the raw material pulping is set to 50-65° C., the mass concentration range of the added pulping enzyme is set to 0-15 ppm, and the pH range of the pulping enzyme is set to 8.5-9.5.

[0020] Preferably, the fiber raw material composition is coniferous pulp, the titanium dioxide used is rutile type, and the retention aid used is polyacrylamide.

[0021] Preferably, the raw material component of the wet strength agent is polyethyleneimine resin or polyaminoamide, and the raw material component of the internal sizing agent is cationic starch, rosin glue or carboxymethyl cellulose.

[0022] Preferably, the pressing pressure is set to 260-450 KN / m, and the drying temperature is set to 75-130°, the surface sizing coating amount is 10-30 grams per square meter, and the pre-impregnated facing base paper is 50-80 grams per square meter.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The steel plate grain veneer paper prepared by the present invention adopts thermoplastic degradable resin by adding an appropriate amount of sizing agent into the raw materials, which is safer, more reliable and environmentally friendly. At the same time, an appropriate amount of wet strength agent is added to cooperate with each other, which can effectively improve the waterproof and anti-fouling effect of the steel plate grain veneer paper in the preparation process, and at the same time make the overall tensile strength and smoothness of the steel plate grain veneer paper better, can keep the base paper in a soft state, and can be molded into any shape to match the surface of steel plates of various shapes, and can be conveniently curled in real time to make the volume smaller, so as to facilitate carrying and later transportation.

[0025] The steel plate pattern veneer paper prepared by the present invention realizes the recycling and utilization of waste products by adopting veneer paper waste pulp, kraft paper waste pulp, beating enzyme and long fiber pulp auxiliary materials, thereby effectively reducing the overall cost of raw material production, and by improving the production process, in which beating enzyme is added simultaneously during the pulping process, and the appropriate beating temperature and appropriate pH range are controlled to prepare waste paper pulp with corresponding beating degree and add appropriate sizing agent and other auxiliary materials, the weight of the prepared steel plate pattern veneer paper is smaller as a whole, and the overall strength of the steel plate pattern veneer paper is also better. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Embodiment 1:

[0028] A steel plate pattern veneer paper of this embodiment, the raw materials for preparing the steel plate pattern veneer paper are composed of:

[0029] Fiber raw materials: 200-250 parts;

[0030] Titanium dioxide: 90-110 parts;

[0031] Retention aid: 0.2-0.3 parts;

[0032] Wet strength agent: 11-12 parts;

[0033] Internal sizing agent: 6-8 parts;

[0034] Veneer paper waste pulp: 30-40 parts;

[0035] Kraft paper waste pulp: 20-30 parts;

[0036] Beating enzyme: 15-25 parts;

[0037] Long fiber pulp auxiliary material: 40-55 parts.

[0038] In this embodiment, a method for preparing steel plate pattern veneer paper is provided, and the preparation method comprises the following steps:

[0039] S1. First, the raw materials and auxiliary solvents required to be used, such as fiber raw materials, titanium dioxide, wet strength agent, in-slurry sizing agent, veneer paper waste pulp, kraft paper waste pulp, beating enzyme and long fiber pulp auxiliary materials, are weighed in real time according to the weight ratio of the components through a dedicated instrument, and the weighed long fiber pulp auxiliary materials and fiber raw materials are ground into powder through professional grinding equipment, and placed in corresponding storage containers for standby use. This can effectively improve the waterproof and anti-fouling effect of the steel plate grain veneer paper during the preparation process, and at the same time make the overall tensile strength and smoothness of the steel plate grain veneer paper better, and can keep the base paper soft and be molded into any shape to match the bonding of steel plate surfaces of various shapes.

[0040] S2. Then, the weighed and proportioned veneer paper waste pulp, kraft paper waste pulp and fiber raw materials are introduced into the waste paper pulper in the corresponding order for pulping, and while pulping, an appropriate mass concentration of pulping enzyme is slowly added, and the pulping temperature is controlled within a corresponding range, and the pH of the pulping enzyme is controlled within a corresponding range, so as to prepare a waste paper pulp with a beating degree of 33 to 36°, and the beaten pulp is successively passed through a coarse screen and a slag remover to remove impurities, and the pulp after impurity removal is transported to a grading screen, which can effectively improve the overall purity of the pulp and make the overall quality of the finished product better.

[0041] S3. Finally, the filtered and screened pulp is introduced into the heating device, and the pulp is heated by the heating device. During the heating process, retention aid, wet strength agent, sizing agent in pulp and long fiber pulp auxiliary material are sequentially added into the pulp and stirred in real time, so that the retention aid, wet strength agent, sizing agent in pulp and long fiber pulp auxiliary material can be quickly integrated together. The mixed pulp is vacuum dehydrated, and then pressed and dehydrated. The base paper is obtained after drying and dehydration. The base paper is surface-sizing with a sizing agent, and the pre-impregnated steel plate pattern veneer paper is obtained after drying and calendering, so as to realize the recycling and utilization of waste products, thereby effectively reducing the overall cost of raw material production.

[0042] In this embodiment, the temperature range of raw material pulping is set to 50-65°C, the mass concentration range of the added pulping enzyme is set to 0-15ppm, and the pH range of the pulping enzyme is set to 8.5-9.5. Waste paper pulp with a corresponding beating degree is prepared and appropriate auxiliary materials such as sizing agents are added. The prepared steel plate grain veneer paper has an overall smaller weight and better overall strength.

[0043] In this embodiment, the fiber raw material composition is coniferous pulp, the type of titanium dioxide used is rutile type, and the retention agent used is polyacrylamide.

[0044] In this embodiment, the raw material components of the wet strength agent are polyethyleneimine resin or polyaminoamide, and the raw material components of the internal sizing agent are cationic starch, rosin glue or carboxymethyl cellulose.

[0045] In this embodiment, the pressing pressure is set to 260-450 KN / m, the drying temperature is set to 75-130°, the surface sizing coating amount is 10-30 grams per square meter, and the pre-impregnated facing base paper is 50-80 grams per square meter.

[0046] The experimental results show that the steel plate grain veneer paper prepared by the present invention can effectively improve the waterproof and anti-fouling effect of the steel plate grain veneer paper during the preparation process, and at the same time make the overall tensile strength and smoothness of the steel plate grain veneer paper better, and can keep the base paper in a soft state. At the same time, waste paper pulp with a corresponding beating degree is prepared and appropriate auxiliary materials such as sizing agents are added. The weight of the prepared steel plate grain veneer paper is smaller as a whole, and the overall strength of the steel plate grain veneer paper is also better.

[0047] Embodiment 2:

[0048] The difference from the first embodiment is that:

[0049] A steel plate pattern veneer paper of this embodiment, the raw materials for preparing the steel plate pattern veneer paper are composed of:

[0050] Fiber raw materials: 100-180 parts;

[0051] Titanium dioxide: 30-70 parts;

[0052] Retention aid: 0.2-0.3 parts;

[0053] Wet strength agent: 5-10 parts;

[0054] Internal sizing agent: 6-8 parts;

[0055] Veneer paper waste pulp: 30-40 parts;

[0056] Kraft paper waste pulp: 20-30 parts;

[0057] Beating enzyme: 15-25 parts;

[0058] Long fiber pulp auxiliary material: 20-35 parts.

[0059] In this embodiment, a method for preparing steel plate pattern veneer paper is provided, and the preparation method comprises the following steps:

[0060] S1. First, the raw materials and auxiliary solvents required, such as fiber raw materials, titanium dioxide, wet strength agent, pulp sizing agent, veneer paper waste pulp, kraft paper waste pulp, beating enzyme and long fiber pulp auxiliary materials, are weighed in real time according to the weight ratio of the components through a dedicated instrument. The weighed long fiber pulp auxiliary materials and fiber raw materials are ground into powder through professional grinding equipment and placed in corresponding storage containers for standby use.

[0061] S2. Then, the weighed and proportioned veneer paper waste pulp, kraft paper waste pulp and fiber raw materials are introduced into a waste paper pulper in a corresponding order for pulping, and a suitable mass concentration of pulping enzyme is slowly added during the pulping, and the pulping temperature is controlled within a corresponding range, and the pH of the pulping enzyme is controlled within a corresponding range, so as to prepare a waste paper pulp with a beating degree of 33 to 36°, and the beaten pulp is successively passed through a coarse screen and a slag remover to remove impurities, and the pulp after impurity removal is transported to a grading screen.

[0062] S3. Finally, the filtered and sieved pulp is introduced into the heating device, and the pulp is heated by the heating device. During the heating process, retention aid, wet strength agent, sizing agent in pulp and long fiber pulp auxiliary material are sequentially added into the pulp and stirred in real time, so that the retention aid, wet strength agent, sizing agent in pulp and long fiber pulp auxiliary material can be quickly integrated together. The mixed pulp is vacuum dehydrated, and then pressed and dehydrated. The base paper is obtained after drying and dehydration. The obtained base paper is surface-sizing with a sizing agent, and after drying, it is calendered to obtain pre-impregnated steel plate pattern veneer paper.

[0063] In this embodiment, the temperature range of raw material beating is set to 50-65°C, the mass concentration range of the added beating enzyme is set to 0-15 ppm, and the pH range of the beating enzyme is set to 2.5-5.5.

[0064] In this embodiment, the fiber raw material composition is coniferous pulp, the type of titanium dioxide used is rutile type, and the retention agent used is polyacrylamide.

[0065] In this embodiment, the raw material components of the wet strength agent are polyethyleneimine resin or polyaminoamide, and the raw material components of the internal sizing agent are cationic starch, rosin glue or carboxymethyl cellulose.

[0066] In this embodiment, the pressing pressure is set to 160-250 KN / m, and the drying temperature is set to 25-70°, the surface sizing coating amount is 10-30 grams per square meter, and the pre-impregnated facing base paper is 10-40 grams per square meter.

[0067] Embodiment three:

[0068] The difference between the first embodiment and the second embodiment is that:

[0069] A steel plate pattern veneer paper of this embodiment, the raw materials for preparing the steel plate pattern veneer paper are composed of:

[0070] Fiber raw materials: 300-450 parts;

[0071] Titanium dioxide: 90-110 parts;

[0072] Retention aid: 0.2-0.3 parts;

[0073] Wet strength agent: 11-12 parts;

[0074] Internal sizing agent: 6-8 parts;

[0075] Veneer paper waste pulp: 30-40 parts;

[0076] Kraft paper waste pulp: 20-30 parts;

[0077] Beating enzyme: 30-45 parts;

[0078] Long fiber pulp auxiliary material: 60-85 parts.

[0079] In this embodiment, a method for preparing steel plate pattern veneer paper is provided, and the preparation method comprises the following steps:

[0080] S1. First, the raw materials and auxiliary solvents required, such as fiber raw materials, titanium dioxide, wet strength agent, pulp sizing agent, veneer paper waste pulp, kraft paper waste pulp, beating enzyme and long fiber pulp auxiliary materials, are weighed in real time according to the weight ratio of the components through a dedicated instrument. The weighed long fiber pulp auxiliary materials and fiber raw materials are ground into powder through professional grinding equipment and placed in corresponding storage containers for standby use.

[0081] S2. Then, the weighed and proportioned veneer paper waste pulp, kraft paper waste pulp and fiber raw materials are introduced into a waste paper pulper in a corresponding order for pulping, and a suitable mass concentration of pulping enzyme is slowly added during the pulping, and the pulping temperature is controlled within a corresponding range, and the pH of the pulping enzyme is controlled within a corresponding range, so as to prepare a waste paper pulp with a beating degree of 33 to 36°, and the beaten pulp is successively passed through a coarse screen and a slag remover to remove impurities, and the pulp after impurity removal is transported to a grading screen.

[0082] S3. Finally, the filtered and sieved pulp is introduced into the heating device, and the pulp is heated by the heating device. During the heating process, retention aid, wet strength agent, sizing agent in pulp and long fiber pulp auxiliary material are sequentially added into the pulp and stirred in real time, so that the retention aid, wet strength agent, sizing agent in pulp and long fiber pulp auxiliary material can be quickly integrated together. The mixed pulp is vacuum dehydrated, and then pressed and dehydrated. The base paper is obtained after drying and dehydration. The obtained base paper is surface-sizing with a sizing agent, and after drying, it is calendered to obtain pre-impregnated steel plate pattern veneer paper.

[0083] In this embodiment, the temperature range of raw material pulping is set to 70-85°C, the mass concentration range of the added pulping enzyme is set to 15-45 ppm, and the pH range of the pulping enzyme is set to 10.0-12.5.

[0084] In this embodiment, the fiber raw material composition is coniferous pulp, the type of titanium dioxide used is rutile type, and the retention agent used is polyacrylamide.

[0085] In this embodiment, the raw material components of the wet strength agent are polyethyleneimine resin or polyaminoamide, and the raw material components of the internal sizing agent are cationic starch, rosin glue or carboxymethyl cellulose.

[0086] In this embodiment, the pressing pressure is set to 500-650 KN / m, the drying temperature is set to 75-130°, the surface sizing coating amount is 10-30 grams per square meter, and the pre-impregnated facing base paper is 850-100 grams per square meter.

[0087] To sum up: the results of the preparation method of the present invention in Example 1 of the present invention show that compared with the preparation results in Example 2 and Example 3, the steel plate grain veneer paper prepared by the present invention can more effectively improve the waterproof and anti-fouling effect of the steel plate grain veneer paper during the preparation process, and at the same time make the overall tensile strength and smoothness of the steel plate grain veneer paper better, can keep the base paper soft, and be molded into any shape to match the surface of steel plates of various shapes, and can be conveniently curled in real time to make the volume smaller, convenient to carry and later transportation, more effectively reducing the overall cost of raw material production, and through the improved production process, the weight of the prepared steel plate grain veneer paper is smaller as a whole, and the overall strength of the steel plate grain veneer paper is also better.

[0088] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel plate veneer paper, characterized by: The raw materials for preparing the steel plate veneer paper are as follows: Fiber raw materials: 200-250 parts; Titanium dioxide: 90-110; Retention aid: 0.2-0.3 parts; Wet strength agent: 11-12 parts; Internal sizing agent: 6-8 parts; Veneer paper waste pulp: 30-40 parts; Kraft paper waste pulp: 20-30 parts; Beating enzyme: 15-25 parts; Long fiber pulp auxiliary material: 40-55 parts.

2. A method for preparing steel plate pattern veneer paper, characterized in that: The preparation method comprises the following steps: S1. First, the fiber raw materials, titanium dioxide, wet strength agent, internal sizing agent, veneer paper waste pulp, kraft paper waste pulp, beating enzyme, long fiber pulp auxiliary materials and other raw materials and auxiliary solvents required to be used are weighed in real time according to the weight ratio of the components through a dedicated instrument, and the weighed long fiber pulp auxiliary materials and fiber raw materials are ground into powder through professional grinding equipment, and placed in corresponding storage containers for standby use; S2, then the weighed and proportioned veneer paper waste pulp, kraft paper waste pulp and fiber raw materials are introduced into a waste paper pulper in a corresponding order for beating, and a suitable mass concentration of beating enzyme is slowly added during beating, and the beating temperature is controlled within a corresponding range, and the pH of the beating enzyme is controlled within a corresponding range, so as to prepare a waste paper pulp with a beating degree of 33 to 36°, and the beaten pulp is sequentially passed through a coarse screen and a slag remover to remove impurities, and the pulp after impurity removal is transported to a grading screen; S3. Finally, the filtered and sieved pulp is introduced into the heating device, and the pulp is heated by the heating device. During the heating process, retention aid, wet strength agent, sizing agent in pulp and long fiber pulp auxiliary material are sequentially added into the pulp and stirred in real time, so that the retention aid, wet strength agent, sizing agent in pulp and long fiber pulp auxiliary material can be quickly integrated together. The mixed pulp is vacuum dehydrated, and then pressed and dehydrated. The base paper is obtained after drying and dehydration. The obtained base paper is surface-sizing with a sizing agent, and after drying, it is calendered to obtain pre-impregnated steel plate pattern veneer paper.

3. The method for preparing a steel plate pattern veneer paper according to claim 2, characterized in that: The temperature range of the raw material pulping is set to 50-65° C., the mass concentration range of the added pulping enzyme is set to 0-15 ppm, and the pH range of the pulping enzyme is set to 8.5-9.

5.

4. The method for preparing a steel plate pattern veneer paper according to claim 2, characterized in that: The fiber raw material composition is coniferous pulp, the titanium dioxide used is rutile type, and the retention agent used is polyacrylamide.

5. The method for preparing a steel plate pattern veneer paper according to claim 2, characterized in that: The raw material component of the wet strength agent is polyethyleneimine resin or polyaminoamide, and the raw material component of the internal sizing agent is cationic starch, rosin glue or carboxymethyl cellulose.

6. The method for preparing a steel plate pattern veneer paper according to claim 2, characterized in that: The pressing pressure is set to 260-450 KN / m, and the drying temperature is set to 75-130°, the surface sizing coating amount is 10-30 grams per square meter, and the pre-impregnated facing base paper is 50-80 grams per square meter.