Adhesive film paper capable of improving pressing and pasting efficiency and preparation method of adhesive film paper

Abstract

The invention discloses bond paper capable of improving pressing and pasting efficiency and a preparation method of the bond paper. The preparation method comprises the following steps: pre-wetting raw paper, dipping, spraying an auxiliary agent, drying for the first time, gluing and drying for the second time; the specific process of spraying the auxiliary agent comprises the following steps: spraying aluminum-magnesium silicate powder on the surface of the body paper impregnated with the glue, and drying for the first time after the aluminum-magnesium silicate powder is fused. According to the invention, after the glue is impregnated for the first time, the magnesium aluminum silicate powder is sprayed on the surface, and the magnesium aluminum silicate powder has an extremely large specific surface area, a porous structure and good oil absorbency, and can be mutually permeated and bonded with undried glue to form a certain cross-linked structure; according to the invention, the three-dimensional porous structure can be formed on the surface of the dipping glue layer, and when the second time of glue coating is carried out, the three-dimensional porous structure can be beneficial to forming firm combination with the coating glue, so that the connection stability between the two glue layers is improved, the curing time during subsequent pressing and pasting can be greatly shortened, and the wet flower condition is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of adhesive film paper, and in particular to an adhesive film paper capable of improving lamination efficiency and a preparation method thereof. Background Art

[0002] Impregnated adhesive film paper is the facing material of decorative panels. Impregnated paper has super strong absorption and anti-solvent ability. It is also a very economical low-particle release paper towel. The impregnated paper is first impregnated in the adhesive solution and then dried. After multiple impregnations and drying, the impregnated adhesive film paper can be formed.

[0003] When the existing impregnated film paper is used, in a conventional lamination process, at a lamination temperature of 190-200°C, the lamination time takes 22s-40s; in a low-temperature and normal-pressure lamination process: a single-layer press at a lamination temperature of 160°C takes 120-150s; a multi-layer press at a lamination temperature of 160°C takes 480-600s.

[0004] The existing adhesive film paper has a long pressing time and low pressing efficiency. If the pressing time is reduced, it will cause a series of problems such as wet flowers, mold failure, insufficient curing degree, and scratch resistance.

[0005] In view of this, this application is hereby filed. Summary of the invention

[0006] The technical problem to be solved by the present invention is that the adhesive film paper currently on the market has a long pressing time and low pressing efficiency. If the pressing time is reduced, a series of problems such as wet spots, non-demolding, insufficient curing degree, and scratch resistance will be caused. The purpose is to provide an adhesive film paper and a preparation method thereof that can improve the pressing efficiency. By improving its preparation process and dipping glue, the pressing time of the adhesive film paper can be greatly reduced, avoiding the problems of wet spots, non-demolding, insufficient curing degree, etc. after short-time pressing, and effectively improving the pressing efficiency.

[0007] The present invention is achieved through the following technical solutions:

[0008] In a first aspect, the present invention provides a glue-film paper capable of improving lamination efficiency, comprising the following steps: pre-wetting, impregnation, spraying of an auxiliary agent, first drying, glue coating, and second drying of a base paper in sequence;

[0009] The specific process of spraying the auxiliary agent is to spray magnesium aluminum silicate powder on the surface of the base paper after it is impregnated with glue, and then perform the first drying after the magnesium aluminum silicate powder is fused.

[0010] The present invention sprays magnesium aluminum silicate powder on the surface of the glue after the first dipping in glue. The magnesium aluminum silicate powder has a large specific surface area and a porous structure, has good oil absorption, can penetrate and bond with the undried glue to form a certain cross-linked structure, and after drying, can form a three-dimensional porous structure on the surface of the impregnated glue layer. Then, when the second glue coating is performed, these three-dimensional porous structures can be conducive to forming a firm bond with the glue, improve the connection stability between the two glue layers, can greatly reduce the curing time during subsequent pressing, and avoid the occurrence of wet flowers.

[0011] In a specific embodiment, the preparation method of the magnesium aluminum silicate is as follows:

[0012] Alkyl orthosilicate, acid and water are mixed evenly to form a gel, aluminum salt and magnesium salt solution are added dropwise, stirred and mixed evenly, and ammonia water is added dropwise to obtain magnesium aluminum silicate sol;

[0013] The magnesium aluminum silicate sol is aged, washed, calcined and ball-milled to obtain magnesium aluminum silicate powder.

[0014] Specifically, 10 parts by weight of methyl orthosilicate, 0.5 parts by weight of 4 mol / L hydrochloric acid, and 30 parts by weight of water are mixed, stirred for 15 minutes to form a gel, 25 parts by weight of a solution containing 3 parts by weight of aluminum chloride and 1 part by weight of magnesium chloride are added dropwise, stirred and mixed for 15 minutes, and 10 parts by weight of 25wt% ammonia water are added dropwise to obtain magnesium aluminum silicate sol; the magnesium aluminum silicate sol is aged for 2 hours, washed with clean water, calcined at 500°C for 1 hour, and ball-milled for 2 hours to obtain magnesium aluminum silicate powder.

[0015] In a specific embodiment, the glue used in the impregnation process includes 90-100 parts of amine-formaldehyde resin, 8-12 parts of modified polyurethane, 1.2-1.4 parts of curing agent, 0.1-0.3 parts of release agent, 0.1-0.3 parts of penetrant, and 0.1-0.3 parts of anti-sticking agent.

[0016] In a specific embodiment, the glue used in the gluing process includes 100-120 parts of melamine resin glue, 10-25 parts of new additives, 0.25-0.4 parts of curing agent, 0.2-0.6 parts of release agent, and 0.2-0.4 parts of leveling agent.

[0017] In a specific embodiment, the preparation method of the novel auxiliary agent is as follows:

[0018] (1) 40-45 parts of glutinous rice and 55-60 parts of water are cooked in a sealed container at 100-120° C.;

[0019] (2) After cooling to 36-40°C, add yeast for decarbonation treatment for 70-72 hours to obtain a translucent uniform fluid;

[0020] (3) After filtering out the residue in the translucent uniform fluid, 20 parts of water, 5 parts of ethylene glycol, 5 parts of polyvinyl alcohol solution, and 0.1 parts of rare earth crosslinking agent were added and mixed evenly to obtain the novel auxiliary agent.

[0021] The present invention can shorten the curing time of melamine formaldehyde resin by adding a new auxiliary agent to the glue coating glue, and can further shorten the pressing time by combining the three-dimensional porous structure formed by magnesium aluminum silicate, while ensuring the pressing quality.

[0022] In a specific embodiment, the specific steps of spraying the additive are as follows:

[0023] Spray magnesium aluminum silicate powder evenly on the surface of the base paper impregnated with the impregnating glue. The amount of magnesium aluminum silicate powder sprayed is such that the color of the magnesium aluminum silicate powder just covers the entire impregnating glue layer. Then let it stand until the magnesium aluminum silicate powder is immersed in the surface of the impregnating glue layer. At this time, the color of the powder disappears and merges with the impregnating glue layer, and the first drying can be carried out.

[0024] In a specific embodiment, the specific steps of the first drying are:

[0025] The base paper sprayed with magnesium aluminum silicate powder is dried in a drying box. The first step is drying at a temperature of 115-135°C and a drying time of 58-65 seconds. The second step is drying at a temperature of 120-145°C and a drying time of 110-125 seconds.

[0026] In a specific embodiment, the specific steps of the first drying are:

[0027] The glue-coated film paper is dried by hot air jet at a drying temperature of 110-160°C. The glue-coated film paper is in a sinusoidal full suspension state and runs between the upper and lower nozzles of the drying box.

[0028] In a second aspect, the present invention provides a glue-film paper capable of improving lamination efficiency, which is prepared by adopting the preparation method.

[0029] The adhesive film paper prepared by the present invention can shorten the laminating time to 14 to 18 seconds in a conventional laminating process at a laminating temperature of 190 to 200° C.; in a laminating process at low temperature and normal pressure, the laminating time can be shortened to 70 to 90 seconds for a single-layer press at a laminating temperature of 160° C., and the laminating time can be shortened to 300 to 340 seconds for a multi-layer press at a laminating temperature of 160° C. Therefore, the comprehensive production efficiency can be increased by 20 to 40% by using the adhesive film paper prepared by the present invention for laminating.

[0030] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0031] 1. The embodiments of the present invention provide a kind of adhesive film paper and a preparation method thereof capable of improving lamination efficiency. By improving its preparation process and dipping glue, the lamination time of the adhesive film paper can be greatly reduced, and the problems of wet spots, non-demolding, insufficient curing degree, etc. after short-time lamination can be avoided, thereby effectively improving the lamination efficiency;

[0032] 2. The embodiment of the present invention provides a glue-film paper capable of improving lamination efficiency and a preparation method thereof. After the first impregnation with glue, magnesium aluminum silicate powder is sprayed on the surface of the glue. The magnesium aluminum silicate powder has a large specific surface area and a porous structure, has good oil absorption, and can penetrate and bond with the undried glue to form a certain cross-linked structure. After drying, a three-dimensional porous structure can be formed on the surface of the impregnated glue layer. Then, when the second glue coating is performed, these three-dimensional porous structures can be conducive to forming a firm bond with the glue coating, thereby improving the connection stability between the two glue layers, greatly reducing the curing time during subsequent lamination, and avoiding the occurrence of wet flowers.

[0033] 3. An embodiment of the present invention provides a kind of adhesive film paper and a preparation method thereof that can improve the lamination efficiency. The adhesive film paper prepared by the present invention can shorten the lamination time to 14 to 18 seconds in a conventional lamination process at a lamination temperature of 190 to 200°C; in a low-temperature and normal-pressure lamination process: a single-layer press can shorten the lamination time to 70 to 90 seconds at a lamination temperature of 160°C, and a multi-layer press can shorten the lamination time to 300 to 340 seconds at a lamination temperature of 160°C. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments. The illustrative embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0035] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is apparent to those of ordinary skill in the art that these specific details do not have to be employed to practice the present invention. In other embodiments, in order to avoid confusing the present invention, well-known methods are not specifically described.

[0036] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. Furthermore, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any appropriate combinations and / or subcombinations.

[0037] In a first aspect, the present invention provides a method for preparing a glue-film paper capable of improving lamination efficiency, comprising the following steps: pre-wetting, impregnation, spraying an auxiliary agent, first drying, gluing, and second drying the base paper in sequence;

[0038] The specific process of spraying the auxiliary agent is to spray magnesium aluminum silicate powder on the surface of the base paper after it is impregnated with glue, and then perform the first drying after the magnesium aluminum silicate powder is fused.

[0039] The present invention sprays magnesium aluminum silicate powder on the surface of the glue after the first dipping in glue. The magnesium aluminum silicate powder has a large specific surface area and a porous structure, has good oil absorption, can penetrate and bond with the undried glue to form a certain cross-linked structure, and after drying, can form a three-dimensional porous structure on the surface of the impregnated glue layer. Then, when the second glue coating is performed, these three-dimensional porous structures can be conducive to forming a firm bond with the glue, improve the connection stability between the two glue layers, can greatly reduce the curing time during subsequent pressing, and avoid the occurrence of wet flowers.

[0040] In a specific embodiment, the preparation method of the magnesium aluminum silicate is as follows:

[0041] Alkyl orthosilicate, acid and water are mixed evenly to form a gel, aluminum salt and magnesium salt solution are added dropwise, stirred and mixed evenly, and ammonia water is added dropwise to obtain magnesium aluminum silicate sol;

[0042] The magnesium aluminum silicate sol is aged, washed, calcined and ball-milled to obtain magnesium aluminum silicate powder.

[0043] Specifically, 10 parts by weight of methyl orthosilicate, 0.5 parts by weight of 4 mol / L hydrochloric acid, and 30 parts by weight of water are mixed, stirred for 15 minutes to form a gel, 25 parts by weight of a solution containing 3 parts by weight of aluminum chloride and 1 part by weight of magnesium chloride are added dropwise, stirred and mixed for 15 minutes, and 10 parts by weight of 25wt% ammonia water are added dropwise to obtain magnesium aluminum silicate sol; the magnesium aluminum silicate sol is aged for 2 hours, washed with clean water, calcined at 500°C for 1 hour, and ball-milled for 2 hours to obtain magnesium aluminum silicate powder.

[0044] In a specific embodiment, the glue used in the impregnation process includes 90-100 parts of amine-formaldehyde resin, 8-12 parts of modified polyurethane, 1.2-1.4 parts of curing agent, 0.1-0.3 parts of release agent, 0.1-0.3 parts of penetrant, and 0.1-0.3 parts of anti-sticking agent.

[0045] In a specific embodiment, the glue used in the gluing process includes 100-120 parts of melamine resin glue, 10-25 parts of new additives, 0.25-0.4 parts of curing agent, 0.2-0.6 parts of release agent, and 0.2-0.4 parts of leveling agent.

[0046] In a specific embodiment, the preparation method of the novel auxiliary agent is as follows:

[0047] (1) 40-45 parts of glutinous rice and 55-60 parts of water are cooked in a sealed container at 100-120° C.;

[0048] (2) After cooling to 36-40°C, add yeast for decarbonation treatment for 70-72 hours to obtain a translucent uniform fluid;

[0049] (3) After filtering out the residue in the translucent uniform fluid, 20 parts of water, 5 parts of ethylene glycol, 5 parts of polyvinyl alcohol solution, and 0.1 parts of rare earth crosslinking agent were added and mixed evenly to obtain the novel auxiliary agent.

[0050] The present invention can shorten the curing time of melamine formaldehyde resin by adding a new auxiliary agent to the glue coating glue, and can further shorten the pressing time by combining the three-dimensional porous structure formed by magnesium aluminum silicate, while ensuring the pressing quality.

[0051] In a specific embodiment, the specific steps of spraying the additive are as follows:

[0052] Spray magnesium aluminum silicate powder evenly on the surface of the base paper impregnated with the impregnating glue. The amount of magnesium aluminum silicate powder sprayed is such that the color of the magnesium aluminum silicate powder just covers the entire impregnating glue layer. Then let it stand until the magnesium aluminum silicate powder is immersed in the surface of the impregnating glue layer. At this time, the color of the powder disappears and merges with the impregnating glue layer, and the first drying can be carried out.

[0053] In a specific embodiment, the specific steps of the first drying are:

[0054] The base paper sprayed with magnesium aluminum silicate powder is dried in a drying box. The first step is drying at a temperature of 115-135°C and a drying time of 58-65 seconds. The second step is drying at a temperature of 120-145°C and a drying time of 110-125 seconds.

[0055] In a specific embodiment, the specific steps of the first drying are:

[0056] The glue-coated film paper is dried by hot air jet at a drying temperature of 110-160°C. The glue-coated film paper is in a sinusoidal full suspension state and runs between the upper and lower nozzles of the drying box.

[0057] In a second aspect, the present invention provides a glue-film paper capable of improving lamination efficiency, which is prepared by adopting the preparation method.

[0058] The adhesive film paper prepared by the present invention can shorten the laminating time to 14 to 18 seconds in a conventional laminating process at a laminating temperature of 190 to 200° C. In a laminating process at low temperature and normal pressure, the laminating time can be shortened to 70 to 150 seconds for a single-layer press at a laminating temperature of 160° C., and the laminating time can be shortened to 300 to 340 seconds for a multi-layer press at a laminating temperature of 160° C. Therefore, the comprehensive production efficiency can be increased by 20 to 40% by using the adhesive film paper prepared by the present invention for laminating.

[0059] Example 1

[0060] The present invention provides a method for preparing a plastic film paper capable of improving lamination efficiency, comprising the following steps:

[0061] 1) Selection and processing of base paper: choose ordinary base paper or printing paper;

[0062] 2) Unwinding: Flatten and deburr ordinary base paper or printing paper;

[0063] 3) Pre-wetting: The base paper from the unwinder first passes through the back coating device to coat the back of the paper with glue, forcing the air in the paper to escape from the front, and then the base paper is semi-pre-wetted by the pre-wetting roller;

[0064] 4) Impregnation:

[0065] 4-1) Components of the impregnating glue: including 100 parts of amine-formaldehyde resin, 12 parts of modified polyurethane, 1.4 parts of curing agent, 0.3 parts of release agent, 0.3 parts of penetrant, and 0.3 parts of anti-adhesive agent;

[0066] 4~2) Wet impregnation

[0067] The pretreated base paper is impregnated as it moves forward gradually under the drive of the rollers;

[0068] 5) Spraying aid: Spray magnesium aluminum silicate powder evenly on the surface of the base paper impregnated with the impregnating glue. The amount of spraying is such that the color of the magnesium aluminum silicate powder just covers the entire impregnating glue layer. Then let it stand until the magnesium aluminum silicate powder is immersed in the surface of the impregnating glue layer. At this time, the color of the powder disappears and merges with the impregnating glue layer.

[0069] 6) First drying: The base paper impregnated with the impregnated glue is dried in an oven. The drying is divided into two steps. The first step is a drying temperature of 115-135°C and a drying time of 58-65 seconds. The second step is a drying temperature of 120-145°C and a drying time of 110-125 seconds.

[0070] 7) Gluing

[0071] 7-1) Glue coating components: including 120 parts of melamine resin glue, 25 parts of new additives, 0.4 parts of curing agent, 0.6 parts of release agent, and 0.4 parts of leveling agent;

[0072] 7-2) After the glue is prepared, the impregnated paper after the first drying is cooled by a cooling fan to make the paper surface temperature 25-45°C, and the upper and lower surfaces of the impregnated paper are coated with coating glue to achieve secondary impregnation, and then cooled by a cooling fan to form an impregnated glue film paper;

[0073] 8) Second drying: The impregnated paper then enters the hot air jet drying section for drying at a temperature between 110 and 160°C. The impregnated paper is in a sinusoidal full suspension state and runs between the upper and lower nozzles of the drying box. The paper does not touch any hard material to avoid damaging the surface adhesive layer.

[0074] Using the adhesive film paper prepared in this embodiment, in a conventional lamination process, the lamination time can be shortened to 14 seconds at a lamination temperature of 190-200°C; in a low-temperature and normal-pressure lamination process: the lamination time can be shortened to 70 seconds for a single-layer press at a lamination temperature of 160°C, and the lamination time can be shortened to 300 seconds for a multi-layer press at a lamination temperature of 160°C.

[0075] Example 2

[0076] The present invention provides a method for preparing a plastic film paper capable of improving lamination efficiency, comprising the following steps:

[0077] 1) Selection and processing of base paper: choose ordinary base paper or printing paper;

[0078] 2) Unwinding: Flatten and deburr ordinary base paper or printing paper;

[0079] 3) Pre-wetting: The base paper from the unwinder first passes through the back coating device to coat the back of the paper with glue, forcing the air in the paper to escape from the front, and then the base paper is semi-pre-wetted by the pre-wetting roller;

[0080] 4) Impregnation:

[0081] 4-1) Components of the impregnating glue: including 90 parts of amine-formaldehyde resin, 8 parts of modified polyurethane, 1.2 parts of curing agent, 0.1 parts of release agent, 0.1 parts of penetrant, and 0.1 parts of anti-adhesive agent;

[0082] 4~2) Wet impregnation

[0083] The pretreated base paper is impregnated as it moves forward gradually under the drive of the rollers;

[0084] 5) Spraying aid: Spray magnesium aluminum silicate powder evenly on the surface of the base paper impregnated with the impregnating glue. The amount of spraying is such that the color of the magnesium aluminum silicate powder just covers the entire impregnating glue layer. Then let it stand until the magnesium aluminum silicate powder is immersed in the surface of the impregnating glue layer. At this time, the color of the powder disappears and merges with the impregnating glue layer.

[0085] 6) First drying: The base paper impregnated with the impregnated glue is dried in an oven. The drying is divided into two steps. The first step is a drying temperature of 115-135°C and a drying time of 58-65 seconds. The second step is a drying temperature of 120-145°C and a drying time of 110-125 seconds.

[0086] 7) Gluing

[0087] 7-1) Components of the glue coating: including 100 parts of melamine resin glue, 10 parts of new additives, 0.25 parts of curing agent, 0.2 parts of release agent, and 0.2 parts of leveling agent;

[0088] 7-2) After the glue is prepared, the impregnated paper after the first drying is cooled by a cooling fan to make the paper surface temperature 25-45°C, and the upper and lower surfaces of the impregnated paper are coated with coating glue to achieve secondary impregnation, and then cooled by a cooling fan to form an impregnated glue film paper;

[0089] 8) Second drying: The impregnated paper then enters the hot air jet drying section for drying at a temperature between 110 and 160°C. The impregnated paper is in a sinusoidal full suspension state and runs between the upper and lower nozzles of the drying box. The paper does not touch any hard material to avoid damaging the surface adhesive layer.

[0090] Using the adhesive film paper prepared in this embodiment, in a conventional lamination process, the lamination time can be shortened to 18 seconds at a lamination temperature of 190-200°C; in a low-temperature and normal-pressure lamination process: the lamination time of a single-layer press at a lamination temperature of 160°C can be shortened to 90 seconds, and the lamination time of a multi-layer press at a lamination temperature of 160°C can be shortened to 340 seconds.

[0091] Example 3

[0092] The present invention provides a method for preparing a plastic film paper capable of improving lamination efficiency, comprising the following steps:

[0093] 1) Selection and processing of base paper: choose ordinary base paper or printing paper;

[0094] 2) Unwinding: Flatten and deburr ordinary base paper or printing paper;

[0095] 3) Pre-wetting: The base paper from the unwinder first passes through the back coating device to coat the back of the paper with glue, forcing the air in the paper to escape from the front, and then the base paper is semi-pre-wetted by the pre-wetting roller;

[0096] 4) Impregnation:

[0097] 4-1) Components of the impregnating glue: including 950 parts of amine-formaldehyde resin, 10 parts of modified polyurethane, 1.3 parts of curing agent, 0.2 parts of release agent, 0.2 parts of penetrant, and 0.2 parts of anti-sticking agent;

[0098] 4~2) Wet impregnation

[0099] The pretreated base paper is impregnated as it moves forward gradually under the drive of the rollers;

[0100] 5) Spraying aid: Spray magnesium aluminum silicate powder evenly on the surface of the base paper impregnated with the impregnating glue. The amount of spraying is such that the color of the magnesium aluminum silicate powder just covers the entire impregnating glue layer. Then let it stand until the magnesium aluminum silicate powder is immersed in the surface of the impregnating glue layer. At this time, the color of the powder disappears and merges with the impregnating glue layer.

[0101] 6) First drying: The base paper impregnated with the impregnated glue is dried in an oven. The drying is divided into two steps. The first step is a drying temperature of 115-135°C and a drying time of 58-65 seconds. The second step is a drying temperature of 120-145°C and a drying time of 110-125 seconds.

[0102] 7) Gluing

[0103] 7-1) Glue coating components: including 110 parts of melamine resin glue, 20 parts of new additives, 0.35 parts of curing agent, 0.4 parts of release agent, and 0.3 parts of leveling agent;

[0104] 7-2) After the glue is prepared, the impregnated paper after the first drying is cooled by a cooling fan to make the paper surface temperature 25-45°C, and the upper and lower surfaces of the impregnated paper are coated with coating glue to achieve secondary impregnation, and then cooled by a cooling fan to form an impregnated glue film paper;

[0105] 8) Second drying: The impregnated paper then enters the hot air jet drying section for drying at a temperature between 110 and 160°C. The impregnated paper is in a sinusoidal full suspension state and runs between the upper and lower nozzles of the drying box. The paper does not touch any hard material to avoid damaging the surface adhesive layer.

[0106] Using the adhesive film paper prepared in this embodiment, in a conventional lamination process, the lamination time can be shortened to 17 seconds at a lamination temperature of 190-200°C; in a low-temperature and normal-pressure lamination process: a single-layer press can shorten the lamination time to 82 seconds at a lamination temperature of 160°C, and a multi-layer press can shorten the lamination time to 325 seconds at a lamination temperature of 160°C.

[0107] Comparative Example 1

[0108] The method for preparing a plastic film paper provided in this comparative example is different from that in Example 1 in that it does not include step 5) spraying an auxiliary agent.

[0109] The adhesive film paper prepared in this comparative example has a conventional lamination process and a lamination time of 23 seconds at a lamination temperature of 190-200°C. In a low-temperature and normal-pressure lamination process: a single-layer press has a lamination time of 113 seconds at a lamination temperature of 160°C, and a multi-layer press has a lamination time of 425 seconds at a lamination temperature of 160°C.

[0110] Comparative Example 2

[0111] The method for preparing a plastic film paper provided in this comparative example is different from that in Example 1 in that: step 5) of spraying an auxiliary agent is not included, and step 7) does not include a new auxiliary agent.

[0112] The adhesive film paper prepared in this comparative example has a conventional lamination process at a lamination temperature of 190-200°C and a lamination time of 29s; in a low-temperature and normal-pressure lamination process: a single-layer press has a lamination time of 134s at a lamination temperature of 160°C, and a multi-layer press has a lamination time of 484s at a lamination temperature of 160°C.

[0113] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for preparing a film paper capable of improving lamination efficiency, characterized in that: The method comprises the following steps: pre-wetting, impregnation, spraying of auxiliary agent, first drying, gluing and second drying of base paper in sequence; The specific process of spraying the auxiliary agent is to spray magnesium aluminum silicate powder on the surface of the base paper after it is impregnated with glue, and then perform the first drying after the magnesium aluminum silicate powder is fused.

2. A method for preparing a plastic film paper capable of improving lamination efficiency according to claim 1, characterized in that: The preparation method of the magnesium aluminum silicate is as follows: Alkyl orthosilicate, acid and water are mixed evenly to form a gel, aluminum salt and magnesium salt solution are added dropwise, stirred and mixed evenly, and ammonia water is added dropwise to obtain magnesium aluminum silicate sol; The magnesium aluminum silicate sol is aged, washed, calcined and ball-milled to obtain magnesium aluminum silicate powder.

3. The method for preparing the adhesive film paper capable of improving lamination efficiency according to claim 1, characterized in that: The glue used in the impregnation process includes 90-100 parts of amine-formaldehyde resin, 8-12 parts of modified polyurethane, 1.2-1.4 parts of curing agent, 0.1-0.3 parts of release agent, 0.1-0.3 parts of penetrant, and 0.1-0.3 parts of anti-sticking agent.

4. The method for preparing the adhesive film paper capable of improving lamination efficiency according to claim 1, characterized in that: The glue used in the gluing process includes 100-120 parts of melamine resin glue, 10-25 parts of new auxiliary agent, 0.25-0.4 parts of curing agent, 0.2-0.6 parts of release agent and 0.2-0.4 parts of leveling agent.

5. A method for preparing a plastic film paper capable of improving lamination efficiency according to claim 4, characterized in that: The preparation method of the novel auxiliary agent is as follows: (1) 40-45 parts of glutinous rice and 55-60 parts of water are cooked in a sealed container at 100-120° C.; (2) After cooling to 36-40°C, add yeast for decarbonation treatment for 70-72 hours to obtain a translucent uniform fluid; (3) After filtering out the residue in the translucent uniform fluid, 20 parts of water, 5 parts of ethylene glycol, 5 parts of polyvinyl alcohol solution, and 0.1 parts of rare earth crosslinking agent were added and mixed evenly to obtain the novel auxiliary agent.

6. A method for preparing a plastic film paper capable of improving lamination efficiency according to claim 1, characterized in that: The specific steps of spraying additives are as follows: Spray magnesium aluminum silicate powder evenly on the surface of the base paper impregnated with the impregnating glue. The amount of magnesium aluminum silicate powder sprayed is such that the color of the magnesium aluminum silicate powder just covers the entire impregnating glue layer. Then let it stand until the magnesium aluminum silicate powder is immersed in the surface of the impregnating glue layer. At this time, the color of the powder disappears and merges with the impregnating glue layer, and the first drying can be carried out.

7. The method for preparing the adhesive film paper capable of improving lamination efficiency according to claim 1, characterized in that: Specific steps for the first drying: The base paper sprayed with magnesium aluminum silicate powder is dried in a drying box. The first step is drying at a temperature of 115-135°C and a drying time of 58-65 seconds. The second step is drying at a temperature of 120-145°C and a drying time of 110-125 seconds.

8. A method for preparing adhesive film paper capable of improving lamination efficiency according to claim 7, characterized in that: Specific steps for the first drying: The glue-coated film paper is dried by hot air jet at a drying temperature of 110-160°C. The glue-coated film paper is in a sinusoidal full suspension state and runs between the upper and lower nozzles of the drying box.

9. A film paper capable of improving lamination efficiency, characterized in that: The invention is prepared by the preparation method according to any one of claims 1 to 8.