阅读说明：本技术 一种耐高温食品包装材料及其制备方法 (High-temperature-resistant food packaging material and preparation method thereof ) 是由 李泽芬 张先进 朱熠辉 于 2020-05-21 设计创作，主要内容包括：本发明公开了一种耐高温食品包装材料及其制备方法,该食品包装材料包括植物纤维纸浆原料；含阴离子性化合物配方的助剂,其与该植物纤维纸浆原料、水份一同置入散浆机槽内混合搅拌而形成均匀植物纤维纸浆浆料；含非离子性化合物与阳离子性化合物配方的助剂,其与该植物纤维纸浆浆料置入一储浆槽内混合搅拌成混合浆料；本发明材料配方中,如含阴离子性化合物、非离子性化合物及阳离子性化合物等的助剂、添加剂,不但采用对人体健康无害者,同时更可以通过FDA美国食品药物管理局的严格的检验标准；该聚胺系树脂是一种阳离子性固定剂,通过与内添用拨水助剂合并使用的助剂,能增进拨水剂与上胶剂的配合度,并能提高其拨水效果。(The invention discloses a high-temperature-resistant food packaging material and a preparation method thereof, wherein the food packaging material comprises a plant fiber paper pulp raw material; the auxiliary agent containing the anionic compound formula is put into a pulp dispersing machine tank together with the plant fiber pulp raw material and water to be mixed and stirred to form uniform plant fiber pulp slurry; the auxiliary agent containing the formula of the nonionic compound and the cationic compound is mixed and stirred with the plant fiber pulp slurry in a pulp storage tank to form mixed slurry; in the formula of the material, for example, auxiliaries and additives containing anionic compounds, nonionic compounds, cationic compounds and the like are adopted, so that the material is harmless to human health and can pass strict inspection standards of FDA (food and drug administration); the polyamine resin is a cationic fixing agent, and the matching degree of the water repellent agent and the sizing agent can be improved and the water repellent effect can be improved by combining the auxiliary agent used with the water repellent auxiliary agent for internal addition.)

1. The high-temperature-resistant food packaging material is characterized by being prepared from a plant fiber pulp raw material, an auxiliary agent containing an anionic compound formula and an auxiliary agent containing a nonionic compound and a cationic compound formula;

the packaging material is prepared by the following steps: putting the auxiliary agent containing the anionic compound formula, the plant fiber pulp raw material and water into a pulp dispersing machine tank together, mixing and stirring to form uniform plant fiber pulp slurry; then, putting the auxiliary agent containing the formula of the nonionic compound and the cationic compound and the plant fiber pulp slurry into a pulp storage tank, and mixing and stirring to form mixed slurry; and finally, carrying out hot-pressing paper-plastic molding on the mixed slurry by using a paper-plastic molding machine, and carrying out release coating, drying and cutting treatment by using coating equipment to obtain the food packaging material.

2. The heat-resistant food packaging material of claim 1, wherein the plant fiber pulp is prepared by mixing a selected plant fiber as a main material with short wood pulp in a partial ratio, and the plant fiber pulp of the selected plant fiber comprises reed pulp, sugar cane pulp, straw pulp, bamboo pulp.

3. The heat-resistant food packaging material of claim 1, wherein the auxiliary agent of the formulation containing anionic compound comprises active aluminum silicate compound and natural wax emulsifier; the assistant containing the formula of the nonionic compound and the cationic compound comprises fluorine resin, modified acrylic resin, polyester, high molecular polymer and polyamine resin.

4. A high-temperature resistant food packaging material as claimed in claim 3, wherein the active aluminum silicate compound is an anionic functional additive for papermaking, the active aluminum silicate compound being 50-80% by weight with respect to the plant fiber pulp raw material; the natural wax emulsifier is an anionic water repellent auxiliary agent for papermaking, and the weight percentage of the natural wax emulsifier relative to the plant fiber pulp raw material is 1.5-9.

5. The heat-resistant food packaging material according to claim 3, wherein the fluorine-based resin is a water repellent aid and an oil repellent aid added to paper making of a nonionic compound, and the weight percentage of the fluorine-based resin to the plant fiber pulp raw material is 0.75 to 5.4; the polyester and the high molecular polymer are cationic neutral paper sizing agents, and the weight percentage of the polyester and the high molecular polymer relative to the plant fiber paper pulp raw material is 0.9-7.2; the polyamine resin is a fixing agent added in the cationic papermaking, and the weight percentage of the polyamine resin relative to the plant fiber pulp raw material is 0.15-0.54; the improved acrylic resin is a water repellent auxiliary agent for cationic papermaking, and the weight percentage of the improved acrylic resin relative to the plant fiber pulp raw material is 0.75-9.

6. The preparation method of the high-temperature-resistant food packaging material is characterized by comprising the following steps of:

(a) preparing a plant fiber pulp raw material, an auxiliary agent containing an anionic compound formula and an auxiliary agent containing a nonionic compound and a cationic compound formula;

(b) putting the auxiliary agent containing the anionic compound formula into a slurry dispersing machine tank, mixing the auxiliary agent with the plant fiber pulp raw material by adding water, and stirring to obtain uniform plant fiber pulp slurry;

(c) putting the auxiliary agent containing the formula of the nonionic compound and the cationic compound and the plant fiber pulp slurry obtained in the step (b) into a pulp storage tank, and mixing and stirring to obtain mixed slurry;

(d) the method comprises the steps of carrying out hot-pressing paper-plastic forming on the mixed slurry by a paper-plastic forming machine, carrying out release coating, drying and cutting treatment by coating equipment, firstly, rotating a rotating hand wheel (9) to drive a threaded rod (23) to rotate, adjusting the distance between two limiting plates (27), then, rotating an adjusting bolt (19) and an adjusting screw rod (25), driving a sliding block and a lifting plate (11) to lift, adjusting an upper drying roller (12), an upper cleaning roller (21), an upper coating roller (10) and a lower coating roller (28), then, placing a formed paperboard on a placing plate (14), driving an air cylinder (15), pushing the paperboard to enter between two side plates (4), driving the lower coating roller (28) to rotate, cleaning the upper and lower surfaces of the paperboard by the upper cleaning roller (21) and the lower cleaning roller, coating the upper and lower surfaces of the paperboard, finally, driving the lower coating roller (28) and the coating roller (10) to coat the upper and lower surfaces of the paperboard, finally, driving an upper drying roller (12) and the lower drying roller to carry out uniform surface coating, drying, conveying the mixed slurry to a conveying groove (34), driving a conveying roller (34) and a conveying roller (31), driving a sliding gear (3542) to rotate, driving a sliding gear (31), driving a sliding plate (31) to rotate, driving a sliding gear (31), driving a sliding plate (31) to rotate, and a sliding plate (31) to drive a sliding plate (31), and a sliding plate (31) to rotate, and a sliding plate (31), and a sliding plate (.

7. The preparation method of the high-temperature-resistant food packaging material according to claim 6, wherein the coating device comprises a conveying seat (1), a coating mechanism (2) and a cutting seat (3), the coating mechanism (2) is fixedly installed at the top of the conveying seat (1), the coating mechanism (2) comprises side plates (4), a conveying plate (22) and a placing plate (14) are respectively installed at two ends of each of the two side plates (4), a rotating motor is fixedly installed at the bottom of the placing plate (14), a gear five (13) is fixedly installed at the end part of an output shaft of the rotating motor, the gear five (13) is connected with a gear two (6) through a chain, the gear two (6) drives the gear one (5) to rotate through a rotating shaft, the gear one (5) drives the gear three (7) to rotate, the gear three (7) drives the gear four (8) to rotate, the third gear (7) and the fourth gear (8) are arranged in a vertically crossed manner, and the third gear (7) and the first gear (5) are rotatably arranged on one side of the side plate (4); the top fixed mounting of curb plate (4) has roof (20), threaded connection has accommodate the lead screw (25) in the top center department of roof (20), the other end of accommodate the lead screw (25) runs through roof (20) and connecting plate (24) swing joint, lifter plate (11) are vertically installed to the bottom both sides of connecting plate (24), two evenly install between lifter plate (11) and scribble coating roller (10), it installs threaded rod (23) to scribble the rotation of coating roller (10) top, be provided with two sections opposite screw threads on threaded rod (23), limiting plate (27) have been cup jointed to the symmetry on threaded rod (23), limiting plate (27) and last cleaning roller (21), last drying roller (12), scribble coating roller (10) and all run through the setting, the one end fixed mounting of threaded rod (23) has rotatory hand wheel (9), the both ends of roof (20) all symmetry are provided with two adjusting bolt (19), the adjustable screw rod type coating machine is characterized in that the adjustable screw rod (19) is vertically arranged, the adjustable screw rod (19) penetrates through the movable plate (18) and is in threaded connection with the top plate (20), guide rods (17) are fixedly arranged at two ends of the movable plate (18), the guide rods (17) penetrate through the top plate (20) and are movably connected with one ends of an upper cleaning roller (21) and an upper drying roller (12) through sliding blocks respectively, the upper cleaning roller (21) and the upper drying roller (12) are arranged on two sides of the upper coating roller (10) respectively, a lower drying roller, a lower cleaning roller and a lower coating roller (28) are correspondingly arranged below the upper drying roller (12), the lower cleaning roller and the upper coating roller (10) respectively, the lower drying roller, the lower cleaning roller and the lower coating roller (28) are driven to rotate by four gears (8), and heating elements are fixedly arranged in the upper drying roller (12) and the lower drying roller, the upper cleaning roller (21) and the lower cleaning roller are uniformly provided with brushes;

a cutting seat (3) is fixedly installed on one side of the conveying seat (1), a conveying groove (34) is formed in the top of the cutting seat (3), a motor (41) is fixedly installed inside the cutting seat (3), the motor (41) is connected with a rotating shaft (43) through a belt, two ends of the rotating shaft (43) penetrate through the cutting seat (3) and are connected with an eccentric gear (29), the other side of the eccentric gear (29) is movably connected with a sliding plate I (31) through a push rod I (30), the sliding plate I (31) is in sliding connection with a sliding groove (32), the sliding groove (32) is fixedly installed on one side of the cutting seat (3), the sliding groove (32) is of a hollow structure, a rack (40) is fixedly installed on the other side of the sliding plate I (31), the rack (40) is in meshing connection with a gear VI (42), the gear VI (42) is sleeved on a transmission shaft (39), the bottom end of the transmission shaft (39) is installed on the cutting seat (3) through a bearing, the top of the transmission shaft (39) penetrates through the cutting seat (3) and is connected with two rotating plates (L25), and the two rotating plates (34) are symmetrically arranged on two sides of the;

the cutting machine is characterized in that the rotating shaft (43) drives the synchronous belt pulley (38) to rotate through a belt, the synchronous belt pulley (38) drives the eccentric wheel (37) to rotate through a rotating shaft, the eccentric wheel (37) is arranged at the top of the cutting seat (3), the other end of the eccentric wheel (37) is movably connected with the sliding plate II (35) through the push rod II (36), the sliding plate II (35) is in sliding connection with the vertical plate (45), the vertical plate (45) is fixedly installed at the top of the cutting seat (3), the L type plate (46) is fixedly installed at the top of the vertical plate (45), an inclined plate (47) is arranged on one side of the L type plate (46), a fixed block (50) is fixedly installed on the other side of the sliding plate II (35), the inside of the fixed block (50) is connected with the push rod (49) through a first spring (52), the push rod (49) penetrates through the fixed block (50), an inverted concave plate (48) is fixedly installed at the top of the push rod (49), a guide wheel (44) is rotatably installed at one end of the top of the concave plate (48.

8. The preparation method of the high-temperature-resistant food packaging material according to claim 7, wherein an air cylinder (15) is fixedly arranged at one end of the top of the placing plate (14), and a baffle plate (16) is fixedly arranged on one side of the top of the placing plate (14).

9. The preparation method of the high-temperature-resistant food packaging material as claimed in claim 7, wherein second guide rods (26) are uniformly arranged on the periphery of the top of the connecting plate (24), and the second guide rods (26) penetrate through the top plate (20).

10. The method for preparing high temperature resistant food packaging material according to claim 7, wherein a second spring (53) is embedded in the L-shaped rotating plate (33), and the second spring (53) extends to L-shaped rotating plate (33) and is connected with the trapezoidal block (54).

Technical Field

The invention relates to the technical field of food packaging materials, in particular to a high-temperature-resistant food packaging material and a preparation method thereof.

Background

Food is often transported for a long distance and stored for a long time, and needs to be packaged through a packaging box, and the requirements on the packaging technology and the packaging method of the food are higher and higher; in general, a common industrial packaging product formed by paper and plastic is mainly prepared from cane pulp, reed pulp, paper leftover materials and the like through hydraulic pulp dispersing, vacuum adsorption forming on a metal mold, direct solidification forming and surface treatment by using water-based acrylic, latex, resin or coating agent (such as coating agent containing EVA vinyl acetate). The resin and the common coating agent are not high-temperature resistant, the surface is easy to dissolve out when meeting high temperature, the dissolved substances are easy to be mixed in food and ingested by human bodies, so that the human health is seriously affected, and the threat to human even exceeds that of Baolilong tableware or plastic tableware; in addition, in the prior art, only one type of paperboard can be coated and dried, and different types of paperboards cannot be treated, so that the use is inconvenient.

Disclosure of Invention

In order to overcome the technical problems, the invention aims to provide a high-temperature-resistant food packaging material and a preparation method thereof, wherein in the formula of the material, auxiliaries and additives such as anionic compounds, nonionic compounds, cationic compounds and the like are adopted, so that the material is harmless to human health and can pass strict inspection standards of FDA (food and drug administration); the polyamine resin is a cationic fixing agent, and the matching degree of the water repellent agent and the sizing agent can be improved and the water repellent effect can be improved by combining the auxiliary agent used with the water repellent auxiliary agent for internal addition; the active aluminum silicate compound is an anionic hydrophobic inorganic flaky aluminum silicate compound, and is a functional additive for paper making, and the additive is added in a paper-plastic forming process, so that the dehydration and drying time can be shortened in the process, and a finished product of the invention has the characteristic of high temperature resistance; the natural wax emulsifier is an anionic natural wax added water-repellent auxiliary agent in paper making; the paper product made by using the natural wax emulsifier not only has the water-repellent effect, but also can improve the tension and the surface strength of the paper product;

compared with the common plant fiber food packaging container, the process of the invention does not need to add any plastic so as to meet the environmental protection standard, such as no pollution, no public nuisance, safety and sanitation, and the like, and the finished product of the invention can be recycled and made into non-food-grade finished products, if the finished product of the invention is treated as garbage, toxic substances can not be generated during combustion, water pollution can not be generated during hydrolysis, secondary pollution can not be caused when the finished product is discarded, the finished product can be effectively used for treatment and further mixed with fertilizer for use after use, and the heat-resistant characteristic of baking treatment at 200 ℃ is provided, so that the materials which are not beneficial to human health can not be decomposed after the container is subjected to high temperature;

the limiting plates, the upper cleaning roller, the upper drying roller and the upper coating roller are arranged in a penetrating mode, the limiting plates slide on the upper cleaning roller, the upper drying roller and the upper coating roller, firstly, a rotating hand wheel is rotated to drive a threaded rod to rotate, the distance between the two limiting plates is adjusted, the paper boards with different widths can be conveniently used by adjusting the distance between the two limiting plates, meanwhile, an adjusting bolt and an adjusting screw rod are rotated to drive a sliding block and a lifting plate to lift, further, the distance between the upper drying roller and the lower cleaning roller and the distance between the upper coating roller and the lower coating roller are adjusted, the paper boards with different thicknesses can be conveniently processed, the paper board cleaning mechanism is convenient to use, the width and the thickness of the coating mechanism can be adjusted simultaneously, any interference; the device can fix the cutting simultaneously, convenient operation, convenient to use.

The purpose of the invention can be realized by the following technical scheme:

a high temperature resistant food packaging material comprises plant fiber paper pulp raw material;

the auxiliary agent containing the anionic compound formula is put into a pulp dispersing machine tank together with the plant fiber pulp raw material and water to be mixed and stirred to form uniform plant fiber pulp slurry;

the auxiliary agent containing the formula of the nonionic compound and the cationic compound is mixed and stirred with the plant fiber pulp slurry in a pulp storage tank to form mixed slurry;

and carrying out hot-pressing paper-plastic molding on the mixed slurry by using a paper-plastic molding machine, and carrying out release coating, drying and cutting treatment by using coating equipment to obtain the food packaging material.

As a further scheme of the invention: the plant fiber pulp raw material is prepared by mixing part of short wood pulp with selected plant fibers as main raw materials, wherein the plant fiber pulp of the selected plant fibers comprises reed pulp, sugarcane pulp, straw pulp, bamboo pulp and the like.

As a further scheme of the invention: the auxiliary agent of the formula containing the anionic compound comprises an active aluminum silicate compound and a natural wax emulsifier; the assistant containing the formula of the nonionic compound and the cationic compound comprises fluorine resin, modified acrylic resin, polyester, high molecular polymer and polyamine resin.

As a further scheme of the invention: the active aluminum silicate compound is an anionic functional additive for papermaking, and the weight percentage of the active aluminum silicate compound relative to the plant fiber pulp raw material is 50-80; the natural wax emulsifier is an anionic water repellent auxiliary agent for papermaking, and the weight percentage of the natural wax emulsifier relative to the plant fiber pulp raw material is 1.5-9.

As a further scheme of the invention: the fluorine resin is a water repellent aid and an oil repellent aid for adding in the papermaking of a nonionic compound, and the weight percentage of the fluorine resin relative to the plant fiber pulp raw material is 0.75-5.4; the polyester and the high molecular polymer are cationic neutral paper sizing agents, and the weight percentage of the polyester and the high molecular polymer relative to the plant fiber paper pulp raw material is 0.9-7.2; the polyamine resin is a fixing agent added in the cationic papermaking, and the weight percentage of the polyamine resin relative to the plant fiber pulp raw material is 0.15-0.54; the improved acrylic resin is a water repellent auxiliary agent for cationic papermaking, and the weight percentage of the improved acrylic resin relative to the plant fiber pulp raw material is 0.75-9.

As a further scheme of the invention: a preparation method of a high-temperature-resistant food packaging material comprises the following steps:

(a) preparing a plant fiber pulp raw material, an auxiliary agent containing an anionic compound formula and an auxiliary agent containing a nonionic compound and a cationic compound formula;

(b) putting the auxiliary agent containing the anionic compound formula into a slurry dispersing machine tank, mixing the auxiliary agent with the plant fiber pulp raw material by adding water, and stirring to obtain uniform plant fiber pulp slurry;

(c) putting the auxiliary agent containing the formula of the nonionic compound and the cationic compound and the plant fiber pulp slurry obtained in the step (b) into a pulp storage tank, and mixing and stirring to obtain mixed slurry;

(d) the method comprises the steps of carrying out hot-pressing paper-plastic forming on the mixed slurry by a paper-plastic forming machine, carrying out release coating, drying and cutting treatment by coating equipment, firstly rotating a rotating hand wheel to drive a threaded rod to rotate, adjusting the distance between two limiting plates, then rotating an adjusting bolt and an adjusting screw rod to drive a sliding block and a lifting plate to lift, adjusting the distance between an upper drying roller, an upper cleaning roller, an upper coating roller and a lower coating roller, then placing a formed paper board on a placing plate, driving a cylinder to push the paper board to enter between two side plates, driving the lower coating roller to rotate, cleaning the upper and lower surfaces of the paper board by the upper cleaning roller and the lower cleaning roller, coating the upper and lower surfaces of the paper board by the lower coating roller, finally brushing the surface rollers uniformly and drying the paper board by the upper drying roller and the lower drying roller, finally conveying the paper board to a conveying groove, driving an eccentric wheel and an eccentric gear to rotate by a driving motor to drive the eccentric wheel to rotate by a second pushing sliding plate, further driving a sixth gear to rotate, and then taking out a trapezoidal block to obtain a packaging material, and finally taking out the packaging material.

As a further scheme of the invention: the coating equipment comprises a conveying seat, a coating mechanism and a cutting seat, wherein the coating mechanism is fixedly installed at the top of the conveying seat and comprises side plates, a conveying plate and a placing plate are respectively installed at two ends of each of the two side plates, a rotating motor is fixedly installed at the bottom of the placing plate, a gear fifth is fixedly installed at the end part of an output shaft of the rotating motor and is connected with a gear second through a chain, the gear second drives a gear first to rotate through a rotating shaft, the gear third drives a gear third to rotate, the gear third drives a gear fourth to rotate, the gear third and the gear fourth are arranged in an up-and-down crossed mode, and the gear third and the gear first are both rotatably installed on one side of each side plate; the top of the side plate is fixedly provided with a top plate, the center of the top plate is in threaded connection with an adjusting screw rod, the other end of the adjusting screw rod penetrates through the top plate and is movably connected with a connecting plate, two lifting plates are vertically arranged on two sides of the bottom of the connecting plate, an upper coating roller is uniformly arranged between the two lifting plates, a threaded rod is rotatably arranged above the upper coating roller, two sections of opposite threads are arranged on the threaded rod, limiting plates are symmetrically sleeved on the threaded rod, the limiting plates are all penetrated and arranged with an upper cleaning roller, an upper drying roller and an upper coating roller, one end of the threaded rod is fixedly provided with a rotary hand wheel, two ends of the top plate are symmetrically provided with two adjusting bolts, the adjusting bolts are vertically arranged, the adjusting bolts penetrate through a movable plate and are in threaded connection with the top, the guide rod penetrates through the top plate and is movably connected with one end of an upper cleaning roller and one end of an upper drying roller through a sliding block, the upper cleaning roller and the upper drying roller are arranged on two sides of an upper coating roller respectively, a lower drying roller, a lower cleaning roller and a lower coating roller are correspondingly arranged below the upper drying roller, the upper cleaning roller and the upper coating roller respectively, the lower drying roller, the lower cleaning roller and the lower coating roller are driven by gears to rotate in a four-wheel mode, heating elements are fixedly arranged inside the upper drying roller and the lower drying roller, and brushes are uniformly arranged on the upper cleaning roller and the lower cleaning roller;

a cutting seat is fixedly installed on one side of the conveying seat, a conveying groove is formed in the top of the cutting seat, a motor is fixedly installed inside the cutting seat, the motor is connected with a rotating shaft through a belt, two ends of the rotating shaft penetrate through the cutting seat and are connected with an eccentric gear respectively, the other side of the eccentric gear is movably connected with a first sliding plate through a first push rod, the first sliding plate is connected with a sliding groove in a sliding mode, the sliding groove is fixedly installed on one side of the cutting seat, the sliding groove is of a hollow structure, a rack is fixedly installed on the other side of the first sliding plate, the rack is meshed with a sixth gear, the sixth gear is sleeved on a transmission shaft, the bottom end of the transmission shaft is installed on the cutting seat through a bearing, the top of the transmission shaft penetrates through the cutting seat and is connected with an L-type rotating plate, and;

the cutting machine is characterized in that the rotating shaft further drives a synchronous belt pulley to rotate through a belt, the synchronous belt pulley drives an eccentric wheel to rotate through a rotating shaft, the eccentric wheel is arranged at the top of the cutting seat, the other end of the eccentric wheel is movably connected with a second sliding plate through a second push rod, the second sliding plate is slidably connected with a vertical plate, the vertical plate is fixedly installed at the top of the cutting seat, an L-shaped plate is fixedly installed at the top of the vertical plate, an inclined plate is arranged on one side of the L-shaped plate, a fixed block is fixedly installed at the other side of the second sliding plate, the inside of the fixed block is connected with an ejector rod through a first spring, the ejector rod penetrates through the fixed block, an inverted concave plate is fixedly installed at the top of the ejector rod.

As a further scheme of the invention: the air cylinder is fixedly arranged at one end of the top of the placing plate, and the baffle is fixedly arranged on one side of the top of the placing plate.

As a further scheme of the invention: and a second guide rod is uniformly arranged around the top of the connecting plate and penetrates through the top plate.

As a further proposal of the invention, a second spring is embedded in the L-shaped rotating plate and extends to the exterior of the L-shaped rotating plate to be connected with the trapezoidal block.

The invention has the beneficial effects that: in the formula of the material, for example, auxiliaries and additives containing anionic compounds, nonionic compounds, cationic compounds and the like are adopted, so that the material is harmless to human health and can pass strict inspection standards of FDA (food and drug administration); the polyamine resin is a cationic fixing agent, and the matching degree of the water repellent agent and the sizing agent can be improved and the water repellent effect can be improved by combining the auxiliary agent used with the water repellent auxiliary agent for internal addition; the active aluminum silicate compound is an anionic hydrophobic inorganic flaky aluminum silicate compound, and is a functional additive for paper making, and the additive is added in a paper-plastic forming process, so that the dehydration and drying time can be shortened in the process, and a finished product of the invention has the characteristic of high temperature resistance; the natural wax emulsifier is an anionic natural wax added water-repellent auxiliary agent in paper making; the paper product made by using the natural wax emulsifier not only has the water-repellent effect, but also can improve the tension and the surface strength of the paper product;

compared with the common plant fiber food packaging container, the process of the invention does not need to add any plastic so as to meet the environmental protection standard, such as no pollution, no public nuisance, safety and sanitation, and the like, and the finished product of the invention can be recycled and made into non-food-grade finished products, if the finished product of the invention is treated as garbage, toxic substances can not be generated during combustion, water pollution can not be generated during hydrolysis, secondary pollution can not be caused when the finished product is discarded, the finished product can be effectively used for treatment and further mixed with fertilizer for use after use, and the heat-resistant characteristic of baking treatment at 200 ℃ is provided, so that the materials which are not beneficial to human health can not be decomposed after the container is subjected to high temperature;

the limiting plates, the upper cleaning roller, the upper drying roller and the upper coating roller are arranged in a penetrating mode, the limiting plates slide on the upper cleaning roller, the upper drying roller and the upper coating roller, firstly, a rotating hand wheel is rotated to drive a threaded rod to rotate, the distance between the two limiting plates is adjusted, the paper boards with different widths can be conveniently used by adjusting the distance between the two limiting plates, meanwhile, an adjusting bolt and an adjusting screw rod are rotated to drive a sliding block and a lifting plate to lift, further, the distance between the upper drying roller and the lower cleaning roller and the distance between the upper coating roller and the lower coating roller are adjusted, the paper boards with different thicknesses can be conveniently processed, the paper board cleaning mechanism is convenient to use, the width and the thickness of the coating mechanism can be adjusted simultaneously, any interference;

then the formed paper board is placed on the placing plate, the cylinder is driven, the paper board is pushed to enter between the two side plates, circular motion is facilitated, the lower coating roller is driven to rotate through gear transmission, the upper surface and the lower surface of the paper board are cleaned by the upper cleaning roller and the lower cleaning roller, then the upper surface and the lower surface of the paper board are coated by the lower coating roller and the upper coating roller, and finally the paper board is uniformly brushed and dried by the upper drying roller and the lower drying roller, so that the situation that only one side surface of the paper board can be treated by traditional equipment is avoided, and meanwhile, the surface coating of the paper board is not uniform only through coating treatment;

and finally, conveying the paper to a conveying groove, driving a motor to simultaneously drive an eccentric wheel and an eccentric gear to rotate, wherein the eccentric wheel drives a sliding plate II to slide through a push rod II, the sliding plate II drives a fixing block to move, a guide wheel is matched with an inclined plate, the push rod is further driven to descend through a concave plate, a spring II is compressed, and an electric cutting knife is further driven to descend to cut.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall construction of a coating apparatus of the present invention;

FIG. 2 is a schematic view of the overall structure of the coating mechanism of the present invention;

FIG. 3 is a schematic side view of the coating mechanism of the present invention;

FIG. 4 is a schematic view of the structure between two side plates in the present invention;

FIG. 5 is a schematic view of the overall structure of the cutting base according to the present invention;

FIG. 6 is a side view of the cutting base of the present invention;

FIG. 7 is a front view of the cutting base of the present invention;

FIG. 8 is a schematic view of the cutting mechanism of the present invention;

FIG. 9 is a schematic view of the internal structure of the fixing block of the present invention;

fig. 10 is a schematic top view of an L-type rotating plate according to the present invention.

In the drawing, the device comprises a conveying seat 1, a conveying seat 2, a coating mechanism 3, a cutting seat 4, side plates 5, a first gear 6, a second gear 7, a third gear 8, a fourth gear 9, a rotary hand wheel 10, an upper coating roller 11, a lifting plate 12, an upper drying roller 13, a fifth gear 14, a placing plate 15, an air cylinder 16, a baffle 17, a first guide rod 18, a movable plate 19, an adjusting bolt 20, a top plate 21, an upper cleaning roller 22, a conveying plate 23, a threaded rod 24, a connecting plate 25, an adjusting screw rod 26, a second guide rod 27, a limiting plate 28, a lower coating roller 29, an eccentric gear 30, a first push rod 31, a first sliding plate 32, a sliding groove 33, a L type rotating plate 34, a conveying groove 35, a second sliding plate 36, a second push rod 37, an eccentric wheel 38, a synchronous belt wheel 39, a transmission shaft 40, a rack 41, a motor 42, a bevel plate 43, a six gear 43, a rotary shaft 44, a guide wheel 3544, a vertical plate 84, a spring 54, a vertical plate 54, a spring block 52, a spring 52, a vertical block and a spring block 49.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-10, a high temperature resistant food packaging material includes a plant fiber pulp material;

the auxiliary agent containing the anionic compound formula is put into a pulp dispersing machine tank together with the plant fiber pulp raw material and water to be mixed and stirred to form uniform plant fiber pulp slurry;

the auxiliary agent containing the formula of the nonionic compound and the cationic compound is mixed and stirred with the plant fiber pulp slurry in a pulp storage tank to form mixed slurry;

and carrying out hot-pressing paper-plastic molding on the mixed slurry by using a paper-plastic molding machine, and carrying out release coating, drying and cutting treatment by using coating equipment to obtain the food packaging material.

The plant fiber pulp raw material is prepared by mixing part of short wood pulp with selected plant fibers as main raw materials, wherein the plant fiber pulp of the selected plant fibers comprises reed pulp, sugarcane pulp, straw pulp, bamboo pulp and the like.

The auxiliary agent of the formula containing the anionic compound comprises an active aluminum silicate compound and a natural wax emulsifier; the assistant containing the formula of the nonionic compound and the cationic compound comprises fluorine resin, modified acrylic resin, polyester, high molecular polymer and polyamine resin.

The active aluminum silicate compound is an anionic functional additive for papermaking, and the weight percentage of the active aluminum silicate compound relative to the plant fiber pulp raw material is 50-80; the natural wax emulsifier is an anionic water repellent auxiliary agent for papermaking, and the weight percentage of the natural wax emulsifier relative to the plant fiber pulp raw material is 1.5-9.

The fluorine resin is a water repellent aid and an oil repellent aid for adding in the papermaking of a nonionic compound, and the weight percentage of the fluorine resin relative to the plant fiber pulp raw material is 0.75-5.4; the polyester and the high molecular polymer are cationic neutral paper sizing agents, and the weight percentage of the polyester and the high molecular polymer relative to the plant fiber paper pulp raw material is 0.9-7.2; the polyamine resin is a fixing agent added in the cationic papermaking, and the weight percentage of the polyamine resin relative to the plant fiber pulp raw material is 0.15-0.54; the improved acrylic resin is a water repellent auxiliary agent for cationic papermaking, and the weight percentage of the improved acrylic resin relative to the plant fiber pulp raw material is 0.75-9.

A preparation method of a high-temperature-resistant food packaging material comprises the following steps:

(a) preparing a plant fiber pulp raw material, an auxiliary agent containing an anionic compound formula and an auxiliary agent containing a nonionic compound and a cationic compound formula;

(b) putting the auxiliary agent containing the anionic compound formula into a slurry dispersing machine tank, mixing the auxiliary agent with the plant fiber pulp raw material by adding water, and stirring to obtain uniform plant fiber pulp slurry;

(c) putting the auxiliary agent containing the formula of the nonionic compound and the cationic compound and the plant fiber pulp slurry obtained in the step (b) into a pulp storage tank, and mixing and stirring to obtain mixed slurry;

(d) the mixed slurry is subjected to hot-pressing paper-plastic forming by a paper-plastic forming machine, release coating, drying and cutting treatment are carried out by coating equipment, firstly, a rotating hand wheel 9 is rotated to drive a threaded rod 23 to rotate, the distance between two limiting plates 27 is adjusted, then, an adjusting bolt 19 and an adjusting screw rod 25 are rotated to drive a sliding block and a lifting plate 11 to lift, the distance between an upper drying roller 12, an upper cleaning roller 21, an upper coating roller 10 and a lower coating roller 28 is adjusted, then, a formed paper board is placed on a placing plate 14, a cylinder 15 is driven to push the paper board to enter between two side plates 4, the lower coating roller 28 is driven to rotate, the upper cleaning roller 21 and the lower cleaning roller clean the upper and lower surfaces of the paper board first, then, the lower coating roller 28 and the upper coating roller 10 coat the upper and lower surfaces of the paper board, finally, the upper drying roller 12 and the lower drying roller brush the paper board uniformly and dry the paper board, finally, the paper board is conveyed into a conveying groove 34, a driving motor 41 drives an eccentric wheel 37 and an eccentric wheel 29 to rotate, the eccentric wheel 37 and an eccentric wheel 29 and a sliding gear 33 to drive a sliding cutter 35 to slide, and a sliding plate 3542 to rotate, and then a sliding block 31 is driven to rotate to drive a sliding cutter to cut, and a six-type cutting block 31 is obtained by a sliding block 31.

The coating equipment comprises a conveying seat 1, a coating mechanism 2 and a cutting seat 3, wherein the coating mechanism 2 is fixedly installed at the top of the conveying seat 1, the coating mechanism 2 comprises side plates 4, two ends of each of the two side plates 4 are respectively provided with a conveying plate 22 and a placing plate 14, the bottom of the placing plate 14 is fixedly provided with a rotating motor, the end part of an output shaft of the rotating motor is fixedly provided with a fifth gear 13, the fifth gear 13 is connected with a second gear 6 through a chain, the second gear 6 drives a first gear 5 to rotate through a rotating shaft, the first gear 5 drives a third gear 7 to rotate, the third gear 7 drives a fourth gear 8 to rotate, the third gear 7 and the fourth gear 8 are arranged in a vertically crossed manner, and the third gear 7 and the first gear 5 are both rotatably installed on one side of the side plates; the top of curb plate 4 fixed mounting has roof 20, threaded connection has accommodate the lead screw 25 in the top center department of roof 20, accommodate the lead screw 25 the other end runs through roof 20 and connecting plate 24 swing joint, lifter plate 11 is vertically installed to the bottom both sides of connecting plate 24, two evenly install between the lifter plate 11 and scribble coating roller 10, scribble coating roller 10 top and rotate and install threaded rod 23, be provided with two sections opposite screw threads on the threaded rod 23, limiting plate 27 has been cup jointed to the symmetry on the threaded rod 23, limiting plate 27 and last cleaning roller, last drying roller 12, scribble coating roller 10 and all run through the setting, the one end fixed mounting of threaded rod 23 has rotatory hand wheel 9, the both ends of roof 20 all are provided with two adjusting bolt 19 symmetrically, adjusting bolt 19 sets up vertically, adjusting bolt 19 runs through fly leaf 18 and roof 20 threaded connection, guide rods 17 are fixedly mounted at two ends of the movable plate 18, the guide rods 17 penetrate through a top plate 20 and are movably connected with one ends of an upper cleaning roller 21 and an upper drying roller 12 through sliding blocks respectively, the upper cleaning roller 21 and the upper drying roller 12 are arranged at two sides of an upper coating roller 10 respectively, a lower drying roller, a lower cleaning roller and a lower coating roller 28 are correspondingly arranged below the upper cleaning roller 12, the upper cleaning roller 21 and the upper coating roller 10 respectively, the lower drying roller, the lower cleaning roller and the lower coating roller 28 are driven to rotate by four 8 gears respectively, heating elements are fixedly mounted inside the upper drying roller 12 and the lower drying roller, and brushes are uniformly arranged on the upper cleaning roller 21 and the lower cleaning roller;

a cutting seat 3 is fixedly installed on one side of the conveying seat 1, a conveying groove 34 is formed in the top of the cutting seat 3, a motor 41 is fixedly installed inside the cutting seat 3, the motor 41 is connected with a rotating shaft 43 through a belt, two ends of the rotating shaft 43 respectively penetrate through the cutting seat 3 to be connected with an eccentric gear 29, the other side of the eccentric gear 29 is movably connected with a first sliding plate 31 through a first push rod 30, the first sliding plate 31 is slidably connected with a sliding groove 32, the sliding groove 32 is fixedly installed on one side of the cutting seat 3, the sliding groove 32 is of a hollow structure, a rack 40 is fixedly installed on the other side of the first sliding plate 31, the rack 40 is meshed with a sixth gear 42, the sixth gear 42 is sleeved on a transmission shaft 39, the bottom end of the transmission shaft 39 is installed on the cutting seat 3 through a bearing, the top of the transmission shaft 39 penetrates through the cutting seat 3 to be connected with an L type rotating plate 33, and the L type rotating;

the rotating shaft 43 further drives the synchronous pulley 38 to rotate through a belt, the synchronous pulley 38 drives the eccentric wheel 37 to rotate through a rotating shaft, the eccentric wheel 37 is arranged at the top of the cutting seat 3, the other end of the eccentric wheel 37 is movably connected with the sliding plate II 35 through the push rod II 36, the sliding plate II 35 is in sliding connection with the vertical plate 45, the vertical plate 45 is fixedly installed at the top of the cutting seat 3, the top of the vertical plate 45 is fixedly provided with an L-shaped plate 46, one side of the L-shaped plate 46 is provided with an inclined plate 47, the other side of the sliding plate II 35 is fixedly provided with a fixed block 50, the inside of the fixed block 50 is connected with a push rod 49 through a spring I52, the push rod 49 penetrates through the fixed block 50, the top of the push rod 49 is fixedly provided with an inverted concave plate 48, one end of the top of the concave plate 48 is rotatably provided with.

An air cylinder 15 is fixedly arranged at one end of the top of the placing plate 14, and a baffle 16 is fixedly arranged on one side of the top of the placing plate 14.

And a second guide rod 26 is uniformly arranged around the top of the connecting plate 24, and the second guide rod 26 penetrates through the top plate 20.

A second spring 53 is embedded in the L-shaped rotating plate 33, and the second spring 53 extends to the exterior of the L-shaped rotating plate 33 and is connected with the trapezoidal block 54.

The working principle of the invention is as follows: the limiting plates 27, the upper cleaning roller, the upper drying roller 12 and the upper coating roller 10 are arranged in a penetrating mode, the limiting plates 27 slide on the upper cleaning roller, the upper drying roller 12 and the upper coating roller 10, the rotating hand wheel 9 is firstly rotated to drive the threaded rod 23 to rotate, the distance between the two limiting plates 27 is adjusted, the paperboards with different widths can be conveniently used by adjusting the distance between the two limiting plates 27, meanwhile, the adjusting bolt 19 and the adjusting screw rod 25 are rotated to drive the sliding block and the lifting plate 11 to lift, the distance between the upper drying roller, the lower drying roller, the upper cleaning roller, the lower coating roller and the upper coating roller can be further adjusted, the paperboards with different thicknesses can be conveniently processed and used, the width and the thickness of the coating mechanism can be adjusted simultaneously, any interference can not exist between the upper cleaning roller;

then, the formed paper board is placed on the placing plate 14, the air cylinder 15 is driven, the paper board is pushed to enter between the two side plates 4, circular motion is facilitated, the lower coating roller 28 is driven to rotate through gear transmission, the upper and lower surfaces of the paper board are cleaned by the upper cleaning roller 21 and the lower cleaning roller, then the upper and lower surfaces of the paper board are coated by the lower coating roller 28 and the upper coating roller 10, and finally the paper board is uniformly brushed and dried by the upper drying roller 12 and the lower drying roller, so that the situation that only one side surface of the paper board can be treated by traditional equipment is avoided, and meanwhile, the surface coating of the paper board is not uniform only through coating treatment;

finally, the paper is conveyed into a conveying groove 34, a driving motor 41 simultaneously drives an eccentric wheel 37 and an eccentric gear 29 to rotate, the eccentric wheel 37 drives a sliding plate II 35 to slide through a pushing rod II 36, the sliding plate II 35 drives a fixing block 50 to move, a guide wheel 44 is matched with an inclined plate 47, a push rod 49 is further driven to descend through a concave plate 48, a spring II is compressed, an electric cutting knife is further driven to descend for cutting, the eccentric gear 29 drives a sliding plate I31 to slide through a pushing rod I30 during cutting, a rack on the sliding plate I31 is meshed and connected with a gear II 42, the rack moves to drive the gear II 42 to rotate, the gear II 42 drives a L-type rotating plate 33 to rotate, a spring II 53 is embedded into an L-type rotating plate 33 and installed, the spring II 53 extends to the outside the L-type rotating plate 33 to be connected with a trapezoidal block 54, the trapezoidal block 54 is arranged to be convenient to contact with the paper board, the spring II 53 is arranged to facilitate pushing the trapezoidal block 54 to fix the paper board through the reactive force generated by the spring II 53, meanwhile, the rotating plate L is convenient to rotate and the paper board can be conveniently used when the cutting knife is finished, and the initial position is recovered.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.