CN213681502U - Forming mechanism, wrapping paper manufacturing system and high-grade wrapping paper - Google Patents
Forming mechanism, wrapping paper manufacturing system and high-grade wrapping paper Download PDFInfo
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- CN213681502U CN213681502U CN202022288270.0U CN202022288270U CN213681502U CN 213681502 U CN213681502 U CN 213681502U CN 202022288270 U CN202022288270 U CN 202022288270U CN 213681502 U CN213681502 U CN 213681502U
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Abstract
The utility model relates to the technical field of papermaking equipment, in particular to a forming mechanism, a packaging paper making system and high-grade packaging paper, wherein the forming mechanism comprises a forming plate for receiving paper pulp provided by a pulp spraying device and a vacuum box body positioned below the forming plate; the forming plate is provided with a water falling hole, a negative pressure water storage cavity is arranged inside the vacuum box body, and the water falling hole is communicated with the negative pressure water storage cavity. The utility model provides a forming mechanism, wrapping paper system of making and high-grade wrapping paper have the higher advantage of dehydration efficiency.
Description
Technical Field
The utility model relates to a papermaking equipment technical field especially relates to a forming mechanism, wrapping paper system of making and high-grade wrapping paper.
Background
The manufacturing process of the packaging paper sequentially comprises the steps of paper pulp preparation, paper pulp purification and screening, pulp spraying and net surfing molding, squeezing and dewatering, drying, reeling and the like. Among them, dewatering is the most important and central part of the whole papermaking process. In general, in the conventional papermaking process, a large amount of water is removed in the pressing stage after the paper sheet is formed (the dryness of the paper sheet is increased from 20% to 48-50% in the pressing stage), so the industry also focuses on the research and development of the structure of the pressing device as the research and development of improving the water removal efficiency. The structure of the prior squeezing device is more complex, and the dewatering efficiency is still difficult to improve.
Therefore, improvement of the existing papermaking system is required to solve the problem of low dewatering efficiency.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a forming mechanism, wrapping paper system of making and high-grade wrapping paper have the higher advantage of dehydration efficiency.
In order to achieve the above object, in a first aspect, the present invention provides a forming mechanism, including a forming plate for receiving paper pulp provided by a pulp spraying device, and a vacuum box located below the forming plate;
the forming plate is provided with a water falling hole, a negative pressure water storage cavity is arranged inside the vacuum box body, and the water falling hole is communicated with the negative pressure water storage cavity.
Preferably, the vacuum box body is also connected with an air suction device.
Preferably, the air extracting device is a vacuum pump or an air extracting fan.
In a second aspect, a system for making wrapping paper is provided, which sequentially comprises a guniting device, any one of the forming mechanisms, a forming net group, a sectional type squeezing device, a moisture drying mechanism and a paper rolling mechanism, wherein the sectional type squeezing device sequentially comprises a plurality of first shoe pressing mechanisms and at least one second shoe pressing mechanism along the conveying direction of a paper web;
the first shoe pressing mechanism sequentially comprises a first shoe pressing upper roller, a first shoe pressing towel and a first shoe pressing lower roller, and the paper web is positioned between the first shoe pressing upper towel and the first shoe pressing lower towel;
the second shoe pressing mechanism sequentially comprises a second shoe upper pressing roller, a second shoe upper pressing towel and a second shoe lower pressing roller, and the paper web is positioned between the second shoe upper pressing towel and the second shoe lower pressing roller; the surface of the second shoe press-down roller is of a smooth structure.
Preferably, the forming net group sequentially comprises a surface layer forming net, a core layer forming net and a bottom layer forming net.
Preferably, a sizing machine, a surface glue drying mechanism and a calender are arranged between the moisture drying mechanism and the paper winding mechanism.
Preferably, the first upper shoe pressing roller is of a convex structure, and the diameter of the first upper shoe pressing roller is gradually increased from two ends to the middle;
the first shoe press-down roller is of a concave structure, and the diameter of the first shoe press-down roller is gradually reduced from two ends to the middle.
Preferably, the surface of the second shoe upper pressing roller is provided with a plurality of groove bosses arranged at intervals.
In a third aspect, a high-grade wrapping paper is provided, which is made by any one of the wrapping paper manufacturing systems.
The beneficial effects of the utility model reside in that: the pulp spraying device sprays pulp on a forming plate, moisture in the pulp is pumped into a negative pressure water storage cavity through a water falling hole, and fibers in the pulp are left on the surface of the forming plate to form a paper web. It will be appreciated that the dewatering of the pulp is more efficient when the water content of the pulp immediately after leaving the guniting device is the highest. The utility model discloses with the dehydration operation from squeezing the station to the shaping station in advance, and then effectively improve the dehydration efficiency of making technology, and it is lower to reform transform the degree of difficulty, has great spreading value.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic diagram of a papermaking system of a wrapping paper according to an embodiment;
fig. 2 is a schematic structural view of a grooved boss provided in the embodiment.
In the figure:
1. a guniting device;
2. forming a net group; 201. forming a surface layer into a net; 202. forming a net for the core layer; 203. a bottom layer forming net;
3. a segmented press device;
301. a first shoe press mechanism; 3011. the first boot presses the upper roller; 3012. the first boot presses the towel; 3013. the first boot presses down the towel; 3014. a first shoe press roll;
302. a second shoe press mechanism; 3021. the second shoe presses the upper roller; 3022. the second boot presses the towel; 3023. a second shoe press roll; 3024. a grooved boss;
303. a towel tensioning wheel set;
4. a moisture drying mechanism;
5. a sizing machine;
6. a surface adhesive drying mechanism;
7. a calender;
8. a paper winding mechanism;
9. a paper web;
10. a molding mechanism; 1001. forming a plate; 1002. a vacuum box body; 1003. and an air extracting device.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention are clearly and completely described with reference to the drawings in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.
Furthermore, the terms "long", "short", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the device or element referred to must have the specific orientation, operate in the specific orientation configuration, and thus, should not be construed as limiting the present invention.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
Referring to fig. 1, the embodiment provides a paper making system for making high-grade wrapping paper, and the high-grade wrapping paper produced by the paper making system has high dehydration efficiency, fine and smooth surface layer, and low overall production cost.
The packaging paper making system sequentially comprises a guniting device 1, a forming mechanism 10, a forming net group 2, a sectional type squeezing device 3, a moisture drying mechanism 4, a sizing machine 5, a surface glue drying mechanism 6, a calender 7 and a paper rolling mechanism 8.
The forming mechanism 10 comprises a forming plate 1001 for receiving the pulp provided by the pulp spraying device 1 and a vacuum box 1002 positioned below the forming plate 1001; the forming plate 1001 is provided with a water falling hole, the vacuum box body 1002 is internally provided with a negative pressure water storage cavity, and the water falling hole is communicated with the negative pressure water storage cavity.
Optionally, the vacuum box 1002 is further connected to an air extractor 1003. Further, the air extracting device 1003 is a vacuum pump or an air extracting fan.
The pulp is sprayed on the forming plate by the pulp spraying device, the water in the pulp is pumped into the negative pressure water storage cavity through the water falling hole, and the fibers in the pulp are left on the surface of the forming plate to form a paper web. It will be appreciated that the dewatering of the pulp is more efficient when the water content of the pulp immediately after leaving the guniting device is the highest. The utility model discloses with the dehydration operation from squeezing the station to the shaping station in advance, and then effectively improve the dehydration efficiency of making technology, and it is lower to reform transform the degree of difficulty, has great spreading value.
Optionally, the sectional press apparatus 3 includes a plurality of first shoe press mechanisms 301 and at least one second shoe press mechanism 302 in this order along the conveying direction of the web 9. The first shoe press mechanism 301 comprises a first shoe press roll 3011, a first shoe press towel 3012, a first shoe press towel 3013 and a first shoe press roll 3014 in sequence, and the paper web 9 is located between the first shoe press towel 3012 and the first shoe press towel 3013. The second shoe press mechanism 302 includes a second shoe upper roll 3021, a second shoe upper towel 3022, and a second shoe lower roll 3023 in this order, and the web 9 is located between the second shoe upper towel 3022 and the second shoe lower roll 3023; the surface of the second lower shoe press roll 3023 is smooth.
In this embodiment, the first shoe press-on towel 3012, the first shoe press-down towel 3013, the second shoe press-on towel 3022, and the like are connected to a towel tensioning wheel set 303 for realizing the circulation of the towels.
Specifically, the pulp spraying device 1 sprays the pulp on the forming mechanism 10, the forming mechanism 10 pumps the pulp for forming and then conveys the pulp to the forming net group 2, the pulp is primarily formed to obtain the paper web 9, the sectional type squeezing device 3 dewaters the paper web 9, firstly, the paper web 9 passes through the first shoe pressing mechanism 301, the first shoe pressing towel 3012 is attached to the upper surface of the paper web 9 and absorbs the moisture on the upper surface of the paper web 9, and the first shoe pressing towel 3013 is attached to the lower surface of the paper web 9 and absorbs the moisture on the lower surface of the paper web 9, so that the efficient dewatering can be realized. After the web 9 has been pressed by the first plurality of shoe press mechanisms 301, most of the water has been absorbed by the press. Finally, the paper web 9 enters the second shoe pressing mechanism 302, the fine shoe upper pressing towel is attached to the upper surface of the paper web 9, moisture in the paper web 9 is further squeezed and absorbed, the second shoe pressing roller 3023 is attached to the lower surface of the paper web 9, and the surface of the second shoe pressing roller 3023 is of a smooth structure, so that the lower surface of the paper web 9 is relatively smooth after the second shoe pressing roller 3023 presses the paper web 9, and the fineness of the lower surface of the paper web 9 is effectively improved. And the paper web 9 is pressed and then enters the moisture drying mechanism 4 for drying, and finally is reeled and stored by the paper reeling mechanism 8, so that the papermaking process is completed, and the high-grade packaging paper is obtained. The utility model provides a system is made to wrapping paper uses sectional type to squeeze device 3 and squeezes the dehydration, so can guarantee higher dehydration efficiency, can effectively improve the fineness of paper web 9 again.
Further, after the paper web 9 is pressed and dried, the procedures of sizing, drying, calendering and the like are carried out on the paper web 9, so that the smoothness and the glossiness of the paper web 9 can be greatly improved, and the subsequent printing quality can be improved.
Generally, the paper web 9 comprises a bottom layer attached to the second upper press towel 3022, a surface layer attached to the second lower press roll 3023, and a core layer between the bottom layer and the surface layer. Optionally, the forming net set 2 sequentially includes a surface forming net 201 for forming a surface layer, a core forming net 202 for forming a core layer, and a bottom forming net 203 for forming a bottom layer. In this embodiment, the bottom layer is located above the core layer, and the surface layer is located below the core layer. The fineness of the surface layer is most important, so the second shoe press roll 3023 attached to the surface layer is set to be a smooth ceramic roll. Specifically, the specific structures of the surface forming net 201, the core forming net 202, and the bottom forming net 203 are the prior art, and are not described in detail in this embodiment.
In this embodiment, the first shoe upper roll 3011 has a convex structure, and the diameter of the first shoe upper roll 3011 gradually increases from both ends to the middle; the first shoe press-down roller 3014 has a concave structure, and the diameter of the first shoe press-down roller 3014 gradually decreases from both ends to the middle. Specifically, the convex portion of the first shoe press roll 3011 is just embedded into the concave portion of the first shoe press roll 3014, so that the width of the paper web 9 can be effectively increased without changing the roll length.
Further, referring to fig. 2, the surface of the second shoe press roll 3021 is provided with a plurality of grooved bosses 3024 arranged at intervals. Specifically, grooves are formed between two adjacent groove bosses 3024, and when the second shoe upper roll 3021 presses the web 9 in cooperation with the second shoe lower roll 3023, the groove bosses 3024 cause moisture in the web 9 to be pressed into the grooves.
Optionally, the corrugated boss 3024 has a full or half corrugated structure.
Preferably, the grooved boss 3024 is of a flexible construction. For example, the grooved boss 3024 is made of an elastic material such as soft silicone, rubber, or foam. The flexible grooved boss 3024 has strong deformability, not only can press out moisture in the paper web 9, but also can prevent the paper web 9 from being damaged due to overlarge pressure.
In this embodiment, the number of the first shoe pressing mechanisms 301 is one or two, and the number of the second shoe pressing mechanisms 302 is one. Wherein the second bottom shoe press roll 3023 is a ceramic roll. Specifically, the second shoe press roll 3023 made of ceramic material has a smooth and fine surface, which is beneficial to improving the fineness of the lower surface of the paper web 9.
The wrapping paper papermaking system that this embodiment provided, on the one hand, in the vacuum box 1002 that sets up the pumping in the profiled sheeting 1001 below, greatly improved dehydration efficiency, whole energy consumption reduces by a wide margin. On the other hand, two sections of straight-through shoe press mechanisms connected in series are arranged at the press station. The lower roll of the first shoe pressing mechanism 301 is a concave flexible roll, the upper roll is a controllable medium-high roll, the first shoe pressing mechanism 301 is provided with an upper felt and a lower felt, when the paper web 9 passes through the first shoe pressing mechanism 301, due to the pressing property of a wide pressing area of shoe pressing, the dewatering retention time of the paper web 9 in a high-pressure area can be effectively increased, the dewatering efficiency of the paper web 9 is improved, the solidification of the paper web 9 is facilitated, the dryness of the paper web 9 in the next working section is higher, and the paper web 9 is also stronger and tougher. The upper roller sleeve of the second shoe pressing mechanism 302 is sleeved with a shoe sleeve with a flexible full groove shape or a half groove shape, in order to ensure the smoothness and smoothness of the surface of the paper web 9, the lower roll of the second shoe press mechanism 302 is a ceramic roll with a smooth and even surface, and the second shoe press mechanism 302 is provided with only the upper felt, not the lower felt, the web 9, when passing the second shoe press mechanism 302, one side of the paper web 9 is contacted with the upper felt of the second shoe, the other side is directly contacted with a smooth ceramic roller with smooth and fine surface, this shoe press arrangement ensures that, when the paper web 9 is dewatered in the press section, the surface layer of the paper web 9 is in contact with a fine-surfaced ceramic roll, thereby ensuring the fineness of the surface of the paper web 9, ensuring the final appearance and printing quality of the paper web 9, meanwhile, as the second shoe pressing mechanism 302 is not provided with the lower felt, the consumption of paper machine spare parts is saved, and the papermaking cost of a wrapping paper papermaking system is saved.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (9)
1. A forming mechanism is characterized by comprising a forming plate and a vacuum box body, wherein the forming plate is used for receiving paper pulp provided by a pulp spraying device;
the forming plate is provided with a water falling hole, a negative pressure water storage cavity is arranged inside the vacuum box body, and the water falling hole is communicated with the negative pressure water storage cavity.
2. The molding mechanism of claim 1, wherein said vacuum box is further coupled to a suction device.
3. The molding mechanism of claim 2, wherein the air extractor is a vacuum pump or an air extractor fan.
4. A system for making wrapping paper, which is characterized by comprising a guniting device, a forming mechanism according to any one of claims 1-3, a forming net group, a sectional type pressing device, a moisture drying mechanism and a paper rolling mechanism in sequence, wherein the sectional type pressing device comprises a plurality of first shoe pressing mechanisms and at least one second shoe pressing mechanism in sequence along the conveying direction of a paper web;
the first shoe pressing mechanism sequentially comprises a first shoe pressing upper roller, a first shoe pressing towel and a first shoe pressing lower roller, and the paper web is positioned between the first shoe pressing upper towel and the first shoe pressing lower towel;
the second shoe pressing mechanism sequentially comprises a second shoe upper pressing roller, a second shoe upper pressing towel and a second shoe lower pressing roller, and the paper web is positioned between the second shoe upper pressing towel and the second shoe lower pressing roller; the surface of the second shoe press-down roller is of a smooth structure.
5. A paper making system according to claim 4, wherein said forming wire set comprises, in order, a cover forming wire, a core forming wire and a base forming wire.
6. A paper making system for packaging paper as claimed in claim 4, wherein a sizing machine, a surface glue drying mechanism and a calender are further arranged between the moisture drying mechanism and the paper winding mechanism.
7. A papermaking system of wrapping paper as claimed in claim 4, wherein said first upper shoe press roller is of a convex configuration, the diameter of said first upper shoe press roller gradually increasing from both ends to the middle;
the first shoe press-down roller is of a concave structure, and the diameter of the first shoe press-down roller is gradually reduced from two ends to the middle.
8. A paper making system according to claim 4, wherein the surface of said second upper shoe press roller is provided with a plurality of spaced grooved bosses.
9. A high-grade wrapping paper characterized by being produced by the wrapping paper papermaking system according to any one of claims 4 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022288270.0U CN213681502U (en) | 2020-10-14 | 2020-10-14 | Forming mechanism, wrapping paper manufacturing system and high-grade wrapping paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022288270.0U CN213681502U (en) | 2020-10-14 | 2020-10-14 | Forming mechanism, wrapping paper manufacturing system and high-grade wrapping paper |
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| Publication Number | Publication Date |
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| CN213681502U true CN213681502U (en) | 2021-07-13 |
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| CN202022288270.0U Active CN213681502U (en) | 2020-10-14 | 2020-10-14 | Forming mechanism, wrapping paper manufacturing system and high-grade wrapping paper |
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