Liquid coating tank and coating device for non-silicon release paper

Abstract

According to the liquid coating groove and the coating device for the non-silicon release paper, an opening is formed in the upper side of a long groove body, a liquid outlet is formed in the left side wall of the long groove body, a plurality of liquid inlets are formed in the right side wall of the long groove body, the liquid inlets are higher than the liquid outlet and are distributed at intervals in the length direction of the groove body, the liquid outlet is formed in the middle of the groove body, multi-point liquid inlet can be achieved, and coating liquid can be rapidly diffused to all corners. The liquid adding tank and the tank body are arranged side by side, close to the right and integrally arranged, and the liquid inlet is communicated with the liquid adding tank to guarantee stable liquid feeding. The liquid outlet is connected with a liquid outlet pipe, so that liquid can be conveniently guided. A guiding inclined plate is arranged on the right side wall in the tank body, the lower end of the guiding inclined plate is lower than the liquid outlet, inlet liquid can be prevented from splashing, and multi-point liquid inlet can be strengthened through a lower end separation groove. The guide inclined plate can move up and down, the blocking plate can block the liquid inlet according to needs, and maintenance is convenient. In addition, the liquid receiving tank is used for collecting liquid at the liquid outlet, is connected with the liquid adding tank through the circulating device to form circulation, and is matched with the coating roller, so that the coating liquid fully flows, is prevented from being condensed, stabilizes the coating performance, ensures the coating quality of the release paper and reduces the defective rate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of coating technology, concretely relates to a non-silicon release paper's coating liquid tank and coating device. BACKGROUND

[0002] In today's packaging, printing and many other fields, release paper plays a vital role, which can ensure the smooth demolding of various products during use, and ensure product quality and production efficiency. Among them, non-silicon release paper gradually attracts widespread attention due to its unique advantages.

[0003] The core of non-silicon release paper lies in the non-silicon release coating on its surface. This kind of coating takes acrylic resin, polyurethane resin, polyester resin, etc. as the main component. These components build a solid foundation for the coating, making it have excellent mechanical properties. Whether it is subjected to daily pulling, friction, or under certain pressure, it can maintain the integrity of the paper; Good chemical resistance allows it to resist the corrosion of various chemicals that may be encountered during production and storage, preventing the coating from being damaged; Strong adhesion ensures that the coating is tightly attached to the surface of the paper and is not easily detached, ensuring the durability and stability of the release function.

[0004] In the production process of non-silicon release paper, the coating device is the key equipment. The traditional coating device is usually composed of a coating roller, a pressure roller and a coating liquid tank. During operation, the paper is smoothly transmitted between the coating roller and the pressure roller, and the coating roller is partially immersed in the coating liquid tank to evenly transfer the coating to the paper. In order to maintain the coating liquid in the tank in a suitable state and prevent it from coagulating due to stagnation, the conventional method is to continuously feed liquid into the tank while ensuring an equal amount of liquid to be discharged, thereby promoting the flow of the coating liquid. However, a common coating liquid tank currently uses a single-point liquid inlet and a single-point liquid outlet mode. During long-term and stable coating operation, this liquid inlet and outlet mode exposes significant drawbacks. Since the liquid only flows in from a single inlet and out from a single outlet, the flow path of the coating liquid in most areas of the tank tends to be fixed. This inevitably leads to slow or even near-stagnant flow of the coating liquid in some areas, especially in the corners or middle parts far from the liquid inlet and outlet. The slow or stagnant flow of the coating liquid, due to the lack of sufficient kinetic energy to exchange with fresh coating liquid, results in uneven temperature and composition distribution, which can easily cause coagulation. Once the coating liquid coagulates, not only will it change the original performance parameters of the coating, resulting in a significant reduction in the release effect of the coated paper, causing poor demolding, paper sticking and other problems, but the coagulum can also block the fine pores on the surface of the coating roller or form defects on the paper, seriously affecting product quality, reducing production yield, increasing production cost and time loss, and causing many problems for the enterprise. Therefore, it is urgent to develop a non-silicon release paper coating device that can effectively improve the flow characteristics of the coating liquid and avoid the risk of coating liquid coagulation. SUMMARY

[0005] The utility model proposes a kind of non-silicon release paper's coating liquid groove and coating device to solve the above technical problems in view of the problems indicated in the background art.

[0006] The technical scheme of the utility model is as follows:

[0007] A kind of non-silicon release paper's coating liquid groove, including long trough body, the trough body is set to upside open, the left side wall of the width direction of the trough body is equipped with liquid outlet, the right side wall of the width direction of the trough body is equipped with liquid inlet, the liquid inlet is higher than the liquid outlet setting, the liquid inlet is equipped with multiple, multiple liquid inlets are spaced apart in the length direction of trough body, the liquid outlet is set in the middle position of the length direction of trough body.

[0008] The utility model further is provided, still including long liquid adding groove, liquid adding groove is side by side set in the right side of the width direction of trough body, liquid inlet is connected with the inside of liquid adding groove and is set.

[0009] The utility model further is provided, the liquid outlet is connected with liquid outlet pipe.

[0010] The utility model further is provided, the liquid adding groove and the trough body are integrally set.

[0011] The utility model further is provided, the right side wall on the inside of the trough body is equipped with guide inclined plate, the lower end of guide inclined plate is lower than the liquid outlet setting.

[0012] The utility model further is provided, the liquid outlet is lower than the height of trough body and is set.

[0013] The utility model further is provided, the lower end of guide inclined plate is equipped with separation groove, separation groove is set along up and down direction, separation groove is equipped with multiple and is spaced apart in the length direction of guide inclined plate.

[0014] The utility model further is provided, guide inclined plate can be moved up and down, and the sealing plate that can be blocked to liquid inlet is arranged on guide inclined plate.

[0015] The utility model further is provided, still including liquid receiving groove, the liquid that the liquid outlet flows into the liquid receiving groove, and further including circulating device that connects liquid receiving groove and liquid adding groove.

[0016] A kind of non-silicon release paper coating device, including above-mentioned coating liquid groove, be equipped with rotatable coating roller in trough body, coating roller is set along the length direction of trough body, and the both ends of coating roller are formed rotatable connection with trough body, and the upper side of coating roller is equipped with rotatable compression roller.

[0017] By the above technical scheme, the beneficial effects of the utility model are as follows:

[0018] The non-silicon release paper coating device provided by the utility model has multiple liquid inlet ports which are distributed along the length direction of the groove body at intervals, discards the traditional single-point liquid inlet defect, and enables the coating liquid to flow into the right area of the groove body from different positions, rapidly permeate into every corner, and maximize the initial flow range of the coating liquid in the groove. In cooperation with the high liquid inlet port, the height difference is used to build stable dynamic potential energy, ensure that the liquid flows from the liquid inlet port to the liquid outlet port in one direction and stably, cooperate with the flow guide of the coating roller, enable all the coating liquid to participate in the circulating flow, completely eliminate the local static or slow-flowing area, prevent the coating liquid from condensing from the root cause, ensure the stable performance of the coating, ensure the uniformity of the release paper coating quality, and greatly reduce the rate of defective products. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0020] Fig. 1 It is a structural schematic view of the utility model.

[0021] Fig. 2 It is a top view of the utility model.

[0022] Fig. 3 It is a sectional view of the utility model.

[0023] The reference numerals in the drawings are explained as follows: groove body 1, liquid outlet 2, liquid inlet 3, liquid adding groove 4, liquid outlet pipe 5, guide inclined plate 8, separation groove 9, plugging plate 10, liquid receiving groove 11, coating roller 12, compression roller 13, circulating device 14. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only some embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] The following references are made Figs. 1-3 The utility model is explained as follows:

[0026] Embodiment: A non-silicon release paper coating liquid tank, comprising an elongated tank body 1, which is provided with an upper opening to provide a working space for the subsequent liquid inlet, coating roller operation and liquid outlet processes. The tank body 1 is arranged along the front-rear direction, which is compatible with the transmission path of the paper in the coating process, ensuring the continuity and efficiency of the coating. The tank body 1 is provided with a rotatable coating roller 12 arranged along the length direction of the tank body 1. The two ends of the coating roller 12 are rotatably connected with the tank body 1, which ensures the flexible rotation of the coating roller 12 and maintains its relative stable position in the tank body 1. The two ends of the coating roller 12 in the length direction are respectively spaced apart from the front and rear side walls of the tank body 1, which leaves a necessary space to make the coating liquid flow smoothly around the end of the coating roller 12, avoiding blockage.

[0027] The left side wall of the tank body 1 in the width direction is provided with a liquid outlet 2 (the height of the liquid outlet 2 is the liquid level of the coating liquid in the tank body 1), and the right side wall of the tank body 1 in the width direction is provided with a liquid inlet 3, which is a highlight of the design. The liquid inlet 3 is provided with multiple inlets and is spaced apart along the length direction of the tank body 1. This multi-point liquid inlet design breaks the limitation of the traditional single-point liquid inlet mode. After the actual coating operation is started, the coating liquid flows into the tank body 1 from each liquid inlet 3 in an orderly manner. Due to the dispersed distribution of the liquid inlet 3, the initial position of the coating liquid entering the tank body 1 is widely distributed in the right side area of the tank body 1, and the liquid inlet points at different positions enable the coating liquid to quickly penetrate into every corner of the tank body 1. At the same time, the liquid inlet 3 is higher than the liquid outlet 2, and the height difference creates a natural dynamic potential to promote the flow of the coating liquid. Under the action of gravity, the coating liquid flows from the high liquid inlet 3 to the low liquid outlet 2, ensuring the one-way and stable flow of the liquid.

[0028] When the coating liquid enters the tank body 1 from the liquid inlet 3, the coating roller 12 plays a key role in guiding the flow. Due to the obstruction of the coating roller 12, the newly entered coating liquid cannot flow directly to the left, but spreads to both ends of the axial direction of the coating roller 12. Since the liquid outlet 2 is arranged at the middle position of the length direction of the tank body 1, the coating liquid at both ends of the axial direction of the coating roller 12 converges to the left side of the coating roller 12 to the middle, and finally flows to the liquid outlet 2. In this way, the coating liquid in the tank body 1 is all involved in the flow system under the cooperation of the coating roller 12 and the ingenious layout of the liquid inlet and outlet, which fundamentally eliminates the risk of condensation in local areas due to the static or slow flow of the coating liquid, lays a solid foundation for high-quality coating of non-silicon release paper, and effectively improves the production efficiency and product quality stability.

[0029] The elongated liquid adding groove 4 is provided with an upper opening, which facilitates the operation personnel to add liquid, observe the liquid level and perform daily maintenance and other operations. The liquid adding groove 4 is arranged side by side on the right side of the width direction of the tank body 1, and the liquid adding groove 4 and the tank body 1 are integrally arranged, which enhances the stability of the overall structure, reduces the connection gap between the components, reduces the risk of coating liquid leakage, and is more convenient when installing and debugging the equipment, without complex splicing and calibration procedures. The liquid inlet 3 is arranged in communication with the inside of the liquid adding groove 4, and the liquid inlet 3 is in communication with the bottom of the liquid adding groove 4. In this way, when the coating liquid is added to the liquid adding groove 4, it can smoothly enter the tank body 1 through the bottom liquid inlet 3 by relying on its own gravity, ensuring the stability and continuity of the liquid inlet process, avoiding problems such as coating liquid impact and splashing caused by improper liquid inlet method, and ensuring the stability of the coating liquid flow state in the tank body 1.

[0030] The liquid receiving groove 11 is also included, and the liquid outlet 2 flows into the liquid receiving groove 11, which plays a key role in collecting and temporarily storing the coating liquid, effectively preventing the coating liquid from flowing out and causing waste or polluting the working environment. The circulating device 14 connecting the liquid receiving groove 11 and the liquid adding groove 4 is also included.

[0031] The circulating device 14, for example, a pump, builds a bridge between the liquid receiving groove 11 and the liquid adding groove 4, and through its operation, the coating liquid in the liquid receiving groove 11 is sent back to the liquid adding groove 4, so that the coating liquid starts a new round of circulation and enters the tank body 1 again to participate in the coating operation. This circulation mechanism is of great significance. On the one hand, it maximizes the use of coating liquid resources, reduces coating loss caused by single use and disposal, and reduces raw material costs. On the other hand, the continuously circulating coating liquid is always in a dynamic flow state, further reducing the possibility of condensation in the tank body 1, ensuring the consistency of the coating liquid performance in each coating operation, thereby stabilizing the coating quality of the release paper, providing a solid guarantee for producing high-quality non-silicon release paper, and improving the reliability and economy of the entire production process.

[0032] The liquid outlet 2 is connected with the liquid outlet pipe 5, which can accurately guide the coating liquid flowing out of the liquid outlet 2 to the designated position, usually connected to the liquid receiving groove 11 or the subsequent waste liquid treatment link. Compared with the free scattering of coating liquid without a liquid outlet pipe, the liquid outlet pipe 5 effectively avoids the pollution of the surrounding environment caused by the overflow of coating liquid in all directions, ensures the neatness and order of the working area, and reduces the cleaning and maintenance cost and difficulty. Moreover, the existence of the liquid outlet pipe 5 makes the collection process of the coating liquid more efficient, reduces the loss caused by liquid splashing and dripping, and ensures the full use of coating liquid resources.

[0033] The liquid outlet 2 is arranged lower than the height of the tank body 1.

[0034] The right side wall of the inner side of the groove body 1 is provided with a guide inclined plate 8, which is closely related to the overall coating liquid flow path. It presents a right high left low inclined situation, which is carefully laid out according to the fluid motion characteristics. When the coating liquid flows into the groove body 1 from the liquid inlet 3, due to the liquid inlet velocity, pressure and the inertia of the liquid itself, splashing phenomenon is prone to occur, and the guide inclined plate 8 can effectively deal with this problem.

[0035] The lower end of the guide inclined plate 8 is lower than the liquid outlet 2. This height relationship ensures that the coating liquid flowing out of the liquid outlet 2 can smoothly enter the drainage area constructed by the guide inclined plate 8. The coating liquid flowing out of the liquid outlet 2, under the action of its own gravity and initial flow rate, directly flows to the higher right starting position of the guide inclined plate 8. With the guidance of the inclined plate surface, the coating liquid slowly flows to the left and down along the right high left low slope, and then smoothly reenters the groove body 1.

[0036] In actual operation, the guide advantage of the guide inclined plate 8 to the liquid inlet is fully displayed. On the one hand, the coating liquid entering from the liquid inlet 3, after hitting the guide inclined plate 8, its impact force is effectively dispersed by the large area of the inclined plate buffer surface, the liquid droplets that may splash in all directions are forced to flow in an orderly manner along the inclined direction of the inclined plate, avoiding the coating liquid to splash in the right side area of the groove body 1, preventing liquid from splashing outside the groove body 1 to cause waste and pollution to the surrounding equipment and working environment. On the other hand, the guide inclined plate 8 makes the liquid inlet more uniform and slow to blend into the main body of the coating liquid in the groove body 1, avoiding the local coating liquid concentration, temperature and other parameters from changing suddenly due to liquid inlet impact, maintaining the stability of the overall properties of the coating liquid in the groove body 1, ensuring that the coating liquid contacted by the coating roller 12 is always in a uniform and suitable state when dipping the coating, laying a solid foundation for stable production of high-quality non-silicon release paper, and further optimizing the working efficiency of the entire coating device.

[0037] The lower end of the guide inclined plate 8 is provided with a separation groove 9, which is arranged in the up-down direction, and the separation groove 9 is provided with a plurality of and is arranged in the length direction of the guide inclined plate 8.

[0038] The separation groove 9 can be selected to be set or not set as needed. After the coating liquid enters the guide inclined plate 8, it flows downward along the guide inclined plate 8, and the separation groove 9 separates the lower end of the guide inclined plate 8 into multiple liquid outlet points, thereby further forming a multi-point liquid inlet mode.

[0039] When the coating liquid flows into the groove body 1 from the liquid inlet 3, it flows stably downward along the right high left low slope of the guide inclined plate 8 under the guidance of the guide inclined plate 8. At this time, the separation groove 9 begins to play a key role. Because they separate the lower end of the guide inclined plate 8 into multiple independent liquid outlet points, they can further differentiate the coating liquid flow path. In this way, the effect of multi-point liquid inlet is further strengthened.

[0040] The guide inclined plate 8 is movable up and down, and the guide inclined plate 8 is provided with a blocking plate 10 capable of blocking the liquid inlet 3. The blocking plate 10 is arranged in close contact with the right side wall of the groove body 1, and the upper side of the blocking plate 10 is connected with the upper side of the guide inclined plate 8. The blocking plate 10 is in sliding connection with the right side wall of the groove body 1 (the blocking plate 10 is provided with a sliding block, and the right side wall of the groove body 1 is provided with a sliding groove in sliding cooperation with the sliding block, and the sliding groove is arranged in the up-down direction), and the guide inclined plate 8 is provided with a pull rod 15 for pulling the guide inclined plate 8 and the blocking plate 10 to move up and down.

[0041] The two ends of the guide inclined plate 8 and the blocking plate 10 in the length direction are respectively in abutting cooperation with the front and rear inner side walls of the groove body 1, and form a pre-tightening force, and the guide inclined plate 8 and the blocking plate 10 can stay at the position after being pulled by the pre-tightening force.

[0042] When the liquid inlet 3 needs to discharge liquid, the guide inclined plate 8 moves to the lower side of the liquid inlet 3, and when the liquid inlet 3 needs to be blocked, the guide inclined plate 8 and the blocking plate 10 move upward, and the blocking plate 10 is blocked on the left side of the liquid inlet 3.

[0043] Firstly, the guide inclined plate 8 is endowed with the function of moving up and down, which is closely matched with the multi-condition demand of the coating device. Through the traction of the pull rod 15, the operator can conveniently adjust the vertical position of the guide inclined plate 8 in the groove body 1. When the coating operation is in the normal running state, the liquid inlet 3 needs to normally discharge liquid, and the guide inclined plate 8 can be moved to a specific position at the lower side of the liquid inlet 3. In this position, the coating liquid flowing from the liquid inlet 3 can smoothly flow down along the slope surface of the guide inclined plate 8 which is high on the right and low on the left, fully plays the role of guiding, buffering and distributing of the liquid inlet, ensures that the coating liquid smoothly merges into the main flow in the groove body 1, maintains the uniformity of the liquid flow in the groove, guarantees the stable operation of the coating process, and continuously supplies the coating roller 12 with suitable coating material.

[0044] The blocking plate 10 is closely attached to the right side wall of the groove body 1, and the upper side thereof is firmly connected with the upper side of the guide inclined plate 8, and the two constitute a linkage whole. The blocking plate 10 and the right side wall of the groove body 1 are slidably connected through the structure of the sliding block and the sliding groove, and the sliding groove is accurately arranged in the vertical direction. When the production process appears such as equipment maintenance, coating liquid replacement, or needs to stop the liquid inlet of some liquid inlets for a short time to finely control the liquid flow state in the tank, the liquid inlet 3 needs to be blocked, the operator pulls the guide inclined plate 8 upward by means of the pull rod 15, and the blocking plate 10 connected therewith is synchronously upward, and is accurately blocked on the left side of the liquid inlet 3. In this way, the coating liquid entering the groove body 1 from the liquid inlet 3 is effectively prevented, the fine control of the liquid inlet is realized, unnecessary coating liquid flow into the tank is avoided, the liquid in the tank is unbalanced, splashing or waste is avoided, and conditions for local maintenance and debugging of the equipment are created, and the ability of the non-silicon release paper coating device to deal with complex production scenes is greatly improved, and the efficient and orderly progress of the production process is ensured.

[0045] The non-silicon release paper coating device comprises the liquid coating groove, and the upper side of the coating roller 12 is provided with a rotatable compression roller 13. The paper is conveyed between the coating roller 12 and the compression roller 13. When the paper enters between the coating roller 12 and the compression roller 13, on the one hand, the coating roller 12 is partially immersed in the liquid coating groove, the surface is dipped with coating liquid, and the coating liquid is uniformly coated on the lower surface of the paper with the rotation of the coating roller 12; on the other hand, the compression roller 13 tightly presses the paper by means of the gravity or additional pressure, so that the paper is closely attached to the coating roller 12, and the coating liquid is uniformly and smoothly attached to the paper, so that the problems such as uneven coating thickness, bubbles or wrinkles are avoided, and the final coating quality of the non-silicon release paper is ensured.

[0046] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A non-silicon release paper coating liquid tank, comprising an elongated tank body (1) provided with an upper side opening, characterized in that: The left side wall of the width direction of the groove body (1) is provided with a liquid outlet (2), the right side wall of the width direction of the groove body (1) is provided with a liquid inlet (3), the liquid inlet (3) is higher than the liquid outlet (2), the liquid inlet (3) is provided with a plurality of, a plurality of liquid inlets (3) are arranged in the length direction of the groove body (1), and the liquid outlet (2) is arranged at the middle position of the length direction of the groove body (1).

2. The non-silicon release paper coating liquid tank according to claim 1, wherein: Further comprising an elongated liquid adding groove (4), the liquid adding groove (4) is arranged side by side on the right side of the width direction of the groove body (1), and the liquid inlet (3) is communicated with the inside of the liquid adding groove (4).

3. The non-silicon release paper coating liquid tank according to claim 1, wherein: The liquid outlet (2) is connected with a liquid outlet pipe (5).

4. The non-silicon release paper coating liquid tank according to claim 2, wherein: The liquid adding groove (4) and the groove body (1) are integrally arranged.

5. The non-silicon release paper coating liquid tank according to claim 1, wherein: The right side wall of the inside of the groove body (1) is provided with a guide inclined plate (8), and the lower end of the guide inclined plate (8) is lower than the liquid outlet (2).

6. The non-silicon release paper coating liquid tank according to claim 1, wherein: The liquid outlet (2) is lower than the height of the groove body (1).

7. The non-silicon release paper coating liquid tank according to claim 5, wherein: The lower end of the guide inclined plate (8) is provided with a separation groove (9), the separation groove (9) is arranged in the up-down direction, and a plurality of separation grooves (9) are arranged in the length direction of the guide inclined plate (8).

8. The non-silicon release paper coating liquid tank according to claim 5, wherein: The guide inclined plate (8) can move up and down, and the guide inclined plate (8) is provided with a blocking plate (10) capable of blocking the liquid inlet (3).

9. The non-silicon release paper coating liquid tank according to claim 2, wherein: Further comprising a liquid receiving groove (11), the liquid outlet (2) is arranged in the liquid receiving groove (11), further comprising a circulating device (14) connecting the liquid receiving groove (11) and the liquid adding groove (4).

10. A non-silicon release paper coating apparatus characterized by: Including the liquid coating groove as claimed in any one of claims 1-9, a rotatable coating roller (12) is arranged in the groove body, the coating roller (12) is arranged in the length direction of the groove body, the both ends of the coating roller (12) are rotatably connected with the groove body, and a rotatable pressure roller (13) is arranged on the upper side of the coating roller (12).

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