Membrane material composite full-shading roller shutter fabric preparation process and membrane covering device of membrane material composite full-shading roller shutter fabric preparation process

Abstract

The invention discloses a preparation technology of a membrane material composite full-shading roller shutter fabric. The preparation technology comprises the steps of preparation of base cloth, preparation of surface slurry, preparation of a first coating and a second coating and covering of a membrane material. The invention discloses a film covering device which comprises a rack, the unwinding assembly is used for installing a film roll and unwinding the film in the fabric conveying direction; the conveying assembly comprises a conveying chain installed on the rack and a plurality of ejector pins fixedly connected to the conveying chain. And the pressing assembly comprises a plurality of guide wheel discs installed on the rack, first pressing rollers installed on the guide wheel discs and a second pressing roller set arranged at the end of the rack, and the ejector pins can stretch into the guide wheel discs. The edge positions of the fabric and the film material are fixed through the ejector pins, the film material and the fabric are stretched in the transportation process, then the film material and the fabric are pressed through the first pressing roller, the film material and the fabric can be combined in a relatively smooth mode, it is guaranteed that the film material and the fabric are combined in a relatively static mode for covering, and the film material can be effectively prevented from wrinkling in the re-covering process.

Description

Technical Field

[0001] The present application relates to the technical field of roller blind fabric preparation, and particularly to a preparation process for a film composite fully light-blocking roller blind fabric and a film laminating device thereof. Background Art

[0002] As a common household decoration and functional item, the performance requirements of curtains are becoming increasingly diverse, especially in aspects such as light blocking, heat insulation, moisture resistance, sound absorption, and durability, which have attracted much attention. To meet these requirements, the existing technology often adopts the scheme of coating multiple functional coatings on a base fabric. For example, the patent application No. 2014103976504, titled "A Light-Blocking Foam Coating Curtain", proposes a three-layer coating structure. Through the composite superposition of coatings with different performances, the curtain has excellent light-blocking, heat-insulating, moisture-proof, and sound-absorbing functions.

[0003] However, in the actual production process, the production line adopts a "semi-continuous" mode. Since multiple coatings are required, each coating usually needs to be dried and cured step by step, and the process parameters of each layer are different. Winding can better facilitate segmented adjustment. To achieve fully continuous production, not only an extremely long production line is required, but also high requirements for cooling equipment.

[0004] After cooling, heat will accumulate inside the wound roll. Especially when the base material is a PVC material, the accumulated heat will cause the PVC base material to soften and deform, and the foam layer to adhere due to pressure. To avoid this problem, the cooling time has to be extended during the production process, but this will significantly reduce production efficiency and increase production costs. Summary of the Invention

[0005] The purpose of the present application is to provide a preparation process for a film composite fully light-blocking roller blind fabric and a film laminating device thereof to solve the problem of sticking during the winding of the fabric in the production of PVC fabric curtains.

[0006] In the first aspect, the present application provides a preparation of a film composite fully light-blocking roller blind fabric, adopting the following technical solutions: A preparation of a film composite fully light-blocking roller blind fabric, the process comprising the following steps: a. Making the base fabric; b. Preparing the surface sizing and coating it on the base fabric, performing gradient drying to obtain a first coating, controlling the moisture content of the first coating at 10% - 20%, covering the film material on the first coating for laminating and rolling, controlling the temperature of the first coating at 110 - 160 °C during lamination, synchronizing the unwinding speed of the film material with the moving speed of the base fabric, and performing cooling and winding after laminating and rolling; c. Coating the surface sizing on the film material, performing gradient drying to obtain a second coating, controlling the moisture content of the sizing layer at 10% - 20%, and performing cooling and winding on the dried fabric; d. Process a protective layer on the second coating.

[0007] By adopting the above technical solution, compared with the prior art which directly performs three coatings on the fabric, this application firstly reduces one coating in the process, shortening the process time; secondly, in the original process, the temperature needs to be reduced to 50 - 60 °C after the first coating before winding can be carried out, so that the fabric after winding will not stick due to heat accumulation. A large amount of time and a good cooling environment are required during the cooling process. In the prior art, especially in summer, sticking is particularly likely to occur; in this application, since a layer of film material is attached to the surface of the first coating, the temperature only needs to be reduced to 90 - 100 °C to carry out winding, greatly shortening the process production time; moreover, the film material also has the effect of an insulating layer, and can effectively prevent heat accumulation during winding.

[0008] Control the water content at 10% - 20%, avoiding being too dry or having too low a water content. If it is too dry, the laminating fastness becomes poor, and the foaming coating fastness is also not good; if the water content is too high, lamination and rolling cannot be carried out, and the slurry will contaminate the machine.

[0009] Optionally, the surface sizing is configured according to the following parts by weight: 25 - 35 parts of a first emulsion with a Tg value in the range of 10 - 50 °C, 15 - 25 parts of a second emulsion with a Tg value in the range of - 5 - - 30 °C, 3 - 8 parts of an acrylic binder, 5 - 20 parts of a titanium dioxide dispersion, 5 - 20 parts of a kaolin dispersion, 3 - 8 parts of a foam stabilizer, 0.1 - 0.5 parts of a crosslinking agent, 0.3 - 0.8 parts of a wetting agent, 0 - 1 part of a foaming agent, 0.1 - 1 part of ammonia water.

[0010] By adopting the above technical solution, the first emulsion provides a rigid skeleton for the coating, ensuring the dimensional stability of the coating during drying and use, and preventing softening at high temperatures. Its relatively high glass transition temperature ensures that the coating remains structurally intact within the temperature range tolerated by the PVC substrate; the second emulsion imparts flexibility to the coating, compensating for the brittleness of the high - Tg emulsion and preventing the coating from cracking under bending or low - temperature environments. The ratio of the two emulsions balances the conflicting requirements of hardness and toughness, and through the differential design of the Tg of the double emulsions, the balance between the thermal stability and flexibility of the coating is achieved within the temperature limit of PVC; the combination of a low - dosage crosslinking agent (0.1 - 0.5 parts) and precise water - content control (10% - 20%) solves the melting risk of the PVC substrate during high - temperature processing.

[0011] Optionally, control the viscosity of the surface sizing at 2000 - 3000 cps, adjust the pH value to 8.5 - 11, adjust the solid content to 48% - 52%, and control the foaming ratio at 3 - 5 times.

[0012] By adopting the above technical solution, the viscosity is controlled at 2000 - 3000 cps to adapt to the blade coating process (15 - 25 m / min), which can not only ensure the coating thickness uniformity of 0.2 - 0.8 mm, but also avoid sagging; the medium-high viscosity effectively inhibits the coalescence of bubbles during the foaming process and maintains the integrity of the cell structure with a foaming ratio of 3 - 5 times; adjusting the alkaline environment to pH 8.5 - 11 provides the best reaction environment for formaldehyde-based cross-linking agents, increasing the cross-linking efficiency by more than 40%; balancing the solid content at 48% - 52%, under the drying condition of 140 °C, the drying time can be shortened to 2 - 3 minutes, forming a dense film layer structure with uniform micropores and improving the light shielding rate.

[0013] Optionally, the temperature resistance of the film material is 150 - 200 °C, the thickness is 0.13 - 0.25 μm, and the grammage is 10 - 30 gsm.

[0014] By adopting the above technical solution, the temperature resistance of the film material is 150 - 200 °C, which can match the processing window of 140 - 160 °C of the PVC coating, maintain dimensional stability during the hot pressing stage, control the thickness at 0.13 - 0.25 μm to form the best bonding interface, and the grammage of 10 - 30 gsm only increases the total weight of the base fabric by 1.2% - 3.5%, meeting the lightweight requirement.

[0015] In the second aspect, the present application provides a film laminating device, adopting the following technical solution: A film laminating device includes a frame; a unwind assembly for installing a film material roll and unwinding the film material along the fabric transportation direction; a transportation assembly including a transportation chain installed on the frame and a plurality of thimbles fixedly connected to the transportation chain; a pressing assembly including a plurality of guide wheel discs installed on the frame, a first pressing roller installed on the guide wheel discs, and a second pressing roller group arranged at the end of the frame, and the thimbles can extend into the guide wheel discs. Wherein, under the rolling of the guide wheel discs and the first pressing roller, the thimbles pierce the fabric and the edge position of the film material, covering the film material on the fabric in a relatively static manner, and under the traction of the thimbles, the fabric and the film material can be pulled and rolled by the second pressing roller group.

[0016] By adopting the above technical solution, first, the edge positions of the fabric and the film material are fixed by the thimbles. During transportation, both the film material and the fabric are stretched, and then the film material and the fabric are pressed together by the first pressing roller. In this way, the film material and the fabric will be laminated in a relatively flat manner, and it is ensured that the covering is relatively static, which can effectively prevent the film material from wrinkling during the lamination process; during the film lamination process, it is necessary to ensure that the unwind speed of the film material is synchronized with the coating speed, and the speed ratio is controlled at 1:1. If the film material is too fast, it is easy to wrinkle or even delaminate; if it is too slow, there will be light leakage points or even tearing, and if it is too slow, there will be a stretching situation in the warp direction, resulting in the product having a curled edge or skirt edge phenomenon.

[0017] Optionally, the frame includes at least two longitudinal frames and at least two transverse frames. The projections of the longitudinal frames and the transverse frames in the vertical direction are perpendicular to each other. The length direction of the longitudinal frames is parallel to the fabric movement direction. A moving component is installed on the transverse frame, the longitudinal frames are installed at the output ends of the moving component, and the pressing component is installed on the longitudinal frames.

[0018] By adopting the above technical solution, the distance between the two longitudinal frames on both sides can be adjusted through the moving component, which is applicable to fabrics of different specifications, so that the edge positions of the fabric and the film material can be pierced by the thimble, enhancing the versatility.

[0019] Optionally, the pressing component further includes a mounting frame, a rotating rod rotatably connected to the mounting frame, a first power source for driving the rotating rod to rotate, and a guide wheel disc rotatably connected to the end of the rotating rod.

[0020] By adopting the above technical solution, under the action of the first power source, the guide wheel disc can rotate around the rotating rod to adjust the positional relationship of the guide wheel disc, so that the guide wheel disc can press the fabric and the film material into different positions of the thimble, establishing a pressure gradient during the pressing process, making the lamination effect of the fabric and the film material better, and effectively preventing the stretching of the fabric caused by excessive pressing force.

[0021] Optionally, the first pressing roller is composed of a roller core, mounting columns fixed on the surface of the roller core, and a plurality of arc-shaped pressing plates slidably connected to the mounting columns, and the roller core and the guide wheel disc are detachably connected.

[0022] By adopting the above technical solution, during the rotation of the first pressing roller, when the arc-shaped plate faces downward, due to the action of gravity, the arc-shaped plate will move outward, so as to provide the arc-shaped plate to press the fabric and the film material for lamination; during the pressing process, the first pressing roller and the guide wheel disc are driven components. During the transportation of the film material and the fabric, since the film material and the fabric are in contact with the first pressing roller, the film material and the fabric will drive the first pressing roller and the guide wheel disc to rotate.

[0023] Optionally, the unwinding component includes an unwinding roller, a second power source for driving the unwinding roller to rotate, a plurality of limiting blocks installed on the unwinding roller, and a driving unit for driving the limiting blocks to move; When installing the film material roll, the driving unit retracts the limiting blocks into the unwinding roller; When the installation of the film material roll is completed, the driving unit extends the limiting blocks and abuts against the film material roll.

[0024] By adopting the above technical solution, the unwinding speed of the unwinding roller is controlled by the second power source to be consistent with the moving speed of the fabric. When it is necessary to install the film roll, the driving unit retracts the limiting block into the unwinding roller. At this time, the film roll can be smoothly installed on the unwinding roller. After the film roll is installed, the driving unit extends the limiting block and abuts against the film roll, so that the film roll can rotate following the unwinding roller.

[0025] Optionally, the driving unit includes a rotating shaft, an input shaft, a threaded sleeve, a moving rod, and a connecting rod that are installed and connected inside the unwinding roller. Threaded portions with opposite threads are respectively provided at both ends of the rotating shaft. The threaded portions are threadedly connected to the threaded sleeve. The moving rod is fixedly connected to the limiting block. Both ends of the connecting rod are rotatably connected to the connecting rod and the moving rod respectively. The rotating shaft and the input shaft are connected by gears.

[0026] By adopting the above technical solution, when the input shaft is turned, the rotating shaft rotates together under the action of the gears. The threaded sleeves at both ends of the rotating shaft move synchronously. Through the connecting rod, the moving rod can move inwards / outwards simultaneously, thus realizing the movement of the limiting block.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. Firstly, the present application reduces one coating process in the process, shortening the process time. Secondly, in the original process, it is necessary to reduce the temperature to 50 - 60 °C after the first coating to perform winding, so that the fabric after winding will not stick due to heat accumulation. A large amount of time and a good cooling environment are required during the cooling process. In the prior art, especially in summer, sticking is particularly likely to occur. Since a film layer is attached to the surface of the first coating in the present application, it is only necessary to reduce the temperature to 90 - 100 °C to perform winding, greatly shortening the process production time. Moreover, the film layer also has the effect of a heat insulation layer and can effectively prevent heat accumulation during winding. 2. The edge positions of the fabric and the film are fixed by thimbles. During transportation, both the film and the fabric are stretched, and then the film and the fabric are pressed together by the first pressing roller. In this way, the film and the fabric will be laminated in a relatively flat manner and ensure relative stillness during covering, which can effectively prevent wrinkles from appearing on the film during the lamination process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic process flow diagram of the preparation of a film composite fully light-shielding roller blind fabric in Embodiment 1 of the present application; Figure 2 is a schematic overall structure diagram of Embodiment 3 of the present application; Figure 3 is a schematic overall structure diagram of the transportation component in Embodiment 3 of the present application; Figure 4It is a schematic diagram of the overall structure of the first pressing roller in Embodiment 3 of the present application; Figure 5 It is a schematic diagram of the overall structure of the arc-shaped pressing plate in Embodiment 3 of the present application; Figure 6 It is a schematic diagram of the overall structure of the guide wheel disc in Embodiment 3 of the present application; Figure 7 It is a schematic diagram of the layout of three groups of guide wheel discs in Embodiment 3 of the present application; Figure 8 It is the present application Figure 7 The partial enlarged view at a, where the red dotted line represents the projection lengths of the inclined fabric in the horizontal and vertical directions; Figure 9 It is the present application Figure 4 The cross-sectional view at A-A, where the red dotted line represents the boundaries of the three major regions x, y, and z; Figure 10 It is a schematic diagram of the overall structure of the unwinding assembly in Embodiment 3 of the present application; Figure 11 It is a schematic diagram of the internal structure of the unwinding roller in Embodiment 3 of the present application.

[0029] Explanation of reference numerals: 1, frame; 11, longitudinal frame; 12, transverse frame; 121, moving assembly; 122, optical rod; 2, unwinding assembly; 21, unwinding roller; 22, limiting block; 23, second power source; 24, driving unit; 241, input shaft; 242, threaded sleeve; 243, moving rod; 244, connecting rod; 245, rotating shaft; 3, pressing assembly; 31, mounting frame; 32, rotating rod; 33, guide wheel disc; 331, annular groove; 332, dial rod; 333, first pressing unit; 334, second pressing unit; 335, third pressing unit; 34, second pressing roller group; 35, first power source; 36, first pressing roller; 361, roller core; 362, first guide post; 3621, step; 363, arc-shaped pressing plate; 3631, first through hole; 364, connecting plate; 4, transportation assembly; 41, transportation chain; 42, fixing plate; 43, ejector pin. Detailed implementation manners

[0030] The following will Figure 1 - with reference to the appended Figure 11 further elaborate on the present application.

[0031] Embodiment 1 of the present application discloses a preparation process for a film composite fully light-blocking rolling curtain fabric.

[0032] Embodiment 1, referring to Figure 1 A preparation process for a film composite fully light-blocking rolling curtain fabric includes the following steps: For the production of the base fabric, first, the polyester Oxford fabric substrate is unrolled, inspected, and ensured to have a flat surface without defects. Subsequently, according to requirements, the weft yarn is cut using a high-temperature hot knife, and the seam is joined using high-strength polyester thread or PVC hot melt technology. Then, electrostatic dust removal is used to replace traditional water spraying and cleaning to remove surface impurities and enhance the coating adhesion. The PVC paste is evenly coated on the base fabric through a doctor blade or calendering process and sent into an oven at 180 - 220 °C for plasticization, so that the PVC melts and firmly binds to the base fabric. After that, the weft straightening and shaping are carried out at 150 - 160 °C, cooled synchronously, and the texture and color effects can be achieved through embossing or printing processes. Finally, it is wound up after forced air cooling and shaping. Preparation of the surface sizing: In Example 1, 30 parts of styrene-acrylic emulsion with Tg = 30 °C is used for the first emulsion, 20 parts of acrylate emulsion with Tg = -15 °C for the second emulsion, 5 parts of hydroxyethyl acrylate with Tg = -15 °C for the binder, 5 parts of sodium dodecyl sulfate for the foam stabilizer, 0.3 parts of aziridine for the crosslinking agent, 0.5 parts of polyether-modified silicone for the wetting agent, 0.5 parts of azodicarbonamide for the foaming agent, 0.5 parts of ammonia water with a mass fraction of 28%, 12 parts of titanium dioxide dispersion, and 10 parts of kaolin dispersion.

[0033] Preparation process: The first emulsion, the second emulsion, the acrylic binder, and ammonia water are mixed in a stirring kettle. The stirring speed is controlled at 500 rpm, the temperature is controlled at 25 °C, and the pH is adjusted to 8.5. Then, the titanium dioxide dispersion and the kaolin dispersion are added in sequence. The stirring speed is controlled at 2000 rpm and stirred for 30 min. Then, the foam stabilizer, the wetting agent, and the foaming agent are added, and low-speed stirring is carried out. The stirring speed is controlled at 300 rpm. Finally, the crosslinking agent is added, and after stirring for 10 min, it is left to stand for defoaming.

[0034] Among them, the solid content of the titanium dioxide dispersion is 75%, and the solid content of the kaolin dispersion is 50%. The high solid content of the titanium dioxide dispersion forms a dense particle packing, which improves the light shielding efficiency; when the solid content of the kaolin dispersion is 50%, the optimal shear thinning index is presented, and the viscosity decreases during coating to achieve leveling.

[0035] The properties of the obtained surface sizing are as follows: viscosity is 2800 cps, foaming ratio is 4 times, light shielding rate > 99.3%, and solid content is 51%; usually, the first coating and the second coating are white, with certain light shielding and covering power. The coating requires a certain stiffness but also a certain adhesiveness to maintain the stiffness of the rolling curtain and have good adhesiveness with the film material at the same time.

[0036] Preparation of the first coating: The surface sizing agent was evenly coated on the base fabric at a speed of 20 m / min, with a coating knife angle of 95°, a knife distance of 0.65 mm, and a flat knife head. After coating, precise drying was carried out for 2.5 minutes through an eight-zone gradient drying system (90°C → 110°C → 120°C → 140°C × 3 → 120°C → 120°C), and the online infrared moisture meter was used for real-time control to keep the final moisture content stable at 15 ± 2%.

[0037] The temperature gradient is set to be low at the front, high in the middle, and low at the back. The low temperature at the front is to prevent the coating from drying too quickly at once, otherwise it is easy to crack. The high temperature in the middle is to reach a suitable temperature to improve production efficiency. The low temperature at the back is to ensure that the temperature of the coating surface is not too high during lamination and calendering, otherwise it is easy to stick, damaging the coating and the laminated layer.

[0038] Membrane material lamination: The membrane material was laminated at the same speed as the fabric movement. During the lamination process, the membrane material and the fabric remained relatively stationary, and finally, calendering was carried out through a calender roll. In Example 1, the membrane material was taken as a roll of black PP film, and it could also be PE or TPU, with a thickness of 0.13 - 0.25 μm. During lamination, the temperature was controlled at 140°. When selecting the membrane material, it needs to have a certain temperature tolerance. Usually, the coating temperature is between 110 - 160 degrees. Therefore, the temperature tolerance of the membrane material should not be lower than 160°C for more than 5 minutes. Usually, the melting temperature range of the membrane is selected between 150 - 200°C. The thickness of the membrane material needs to be uniform, and there should be no light leakage or pinholes. The number of pinholes per square meter should not exceed three.

[0039] Cooling and winding: The surface temperature of the membrane material was reduced to 80 - 90°C by air cooling, and then winding was carried out through a winder. Since the structure of the fabric at this time is base fabric - coating - membrane material, during winding, because the coating is located inside, the other side of the base fabric abuts against the membrane material. Compared with the existing structure of base fabric - coating - coating, the fabric structure of this application effectively prevents sticking; and the membrane material, compared with the heat insulation layer, can effectively prevent heat accumulation during winding. In this process, only the temperature of the fabric needs to be reduced to 80 - 90°C during winding, compared with reducing the temperature of the fabric to 40°C in the existing technology, which shortens the cooling time and effectively shortens the entire process.

[0040] Preparation of the second coating: The surface sizing agent was evenly coated on the base fabric at a speed of 20 m / min, with a coating knife angle of 95°, a knife distance of 0.65 mm, and a flat knife head. After coating, precise drying was carried out for 2.5 minutes through an eight-zone gradient drying system (80°C - 100°C - 120°C - 140°C - 150°C - 150°C - 120°C - 110°C), and the online infrared moisture meter was used for real-time control to keep the final moisture content stable at 15 ± 2%.

[0041] Cooling and winding: The surface temperature of the film material is reduced to below 40°C by air cooling, and then it is wound by a winding machine.

[0042] Example 2 is different from Example 1 in that the titanium dioxide dispersion is increased to 18 parts, the kaolin dispersion is reduced to 8 parts, the foaming agent is cancelled, and the cross-linking agent is increased to 0.5 part. Compared with Example 1, the surface gloss and hiding power of the coating in Example 2 are improved.

[0043] Example 3, referring to Figure 2 , discloses a laminating device for laminating a film material with a first coating; it includes a frame 1, an unwinding assembly 2, a conveying assembly 4 arranged on the frame 1, and a pressing assembly 3 arranged on the frame 1. The fabric can move longitudinally under the action of the conveying assembly 4. The unwinding assembly 2 is located above the fabric and can unwind the film material at a certain speed so that the unwinding speed of the film material is the same as the moving speed of the fabric, so that during the lamination process, the fabric and the film material are in a relatively static state. In Example 3, the number of the pressing assemblies 3 is three. When covering the fabric above the fabric, the film material and the fabric are pre-pressed successively by the three pressing assemblies 3, and the pre-pressing forces are different during the three pressing processes.

[0044] Referring to Figure 1 and Figure 2 , the frame 1 includes two longitudinal frames 11 and two transverse frames 12. The longitudinal frames 11 can slide on the transverse frames 12. A moving assembly 121 is provided on one of the transverse frames 12, and the moving assembly 121 can move the two longitudinal frames 11. In Example 3, the moving assembly 121 takes the lead screw unit as an example. The two ends of the lead screw in the lead screw unit are provided with threads with opposite spiral directions, and the two longitudinal frames 11 are respectively threadedly connected to the two ends of the lead screw. A smooth rod 122 is provided on the other cross bar, and the longitudinal frame 11 is slidably connected to the smooth rod 122. In this way, the two longitudinal frames 11 can be synchronously driven by the lead screw unit to adjust the distance between the two longitudinal frames 11 to adapt to fabrics of different sizes.

[0045] Referring to Figure 2 , the conveying assembly 4 includes a conveying chain 41 installed on the frame 1, a fixing plate 42 fixedly connected to the conveying chain 41, and a plurality of ejector pins 43 installed on the fixing plate 42. Taking the tip of the ejector pin 43 facing upward in Example 1 as an example, it can also face downward, and the orientation is related to the layout position of the parts. The conveying chain 41 is driven by a motor, and rows of ejector pins 43 rotate circumferentially under the action of the conveying chain 41. During the rotation, the ejector pins 43 will pierce the edge positions of the fabric and the film material, which is also a way to make the film material and the fabric move synchronously and cover the film material and the fabric in a relatively static state. The conveying chain 41 is placed on the transverse frame 12, and a groove for embedding the conveying chain 41 is provided on the transverse frame 12 to prevent the conveying chain 41 from sagging due to gravity.

[0046] Referring toFigure 1 and Figure 3 ,The laminating assembly 3 includes a mounting frame 31, a rotating rod 32 rotatably connected to the mounting frame 31, a guiding wheel disc 33 mounted at the end of the rotating rod 32, a first pressing roller 36 fixedly connected to the guiding wheel disc 33, a second pressing roller set 34 disposed at the end of the longitudinal frame 11, and a first power source 35 for driving the rotation of the rotating rod 32. In Embodiment 3, the first power source 35 is a servo motor as an example. The rotating rod 32 can accurately rotate an angle under the drive of the first power source 35, so that the guiding wheel disc 33 is located at different heights. The fabric and the film material are first attached synchronously in a relatively static state under the action of the first pressing roller 36 and the ejector pin 43, and then rolled by the second pressing roller set 34, so that the film material and the fabric are further bonded and attached.

[0047] Reference Figure 4 and Figure 5 ,The first pressing roller 36 includes a roller core 361, mounting columns fixed on the surface of the roller core 361, and a plurality of arc-shaped pressing plates 363 slidably connected to the mounting columns. The roller core 361 is bolted to the guiding wheel disc 33. Twelve first guiding columns 362 are fixedly connected to both ends of the roller core 361. The arc-shaped pressing plate 363 is a hollow structure, and a first through hole 3631 is provided on the arc-shaped pressing plate 363. The first guiding column 362 passes through the first through hole 3631. A step 3621 is provided at the end of the first guiding column 362. A connecting plate is installed at the step 3621. The first guiding column 362 is threadedly connected with a nut. The connecting plate can fix the connecting plate 364 under the restriction of the nut and the step 3621. The arc-shaped pressing plate 363 can move on the first guiding column 362, and the moving distance is restricted by the connecting plate. In this way, when the arc-shaped pressing plate 363 faces downward, the arc-shaped pressing plate 363 can move outward under the action of gravity, so that the film material is attached to the fabric in a relatively static manner.

[0048] Reference Figure 6 and Figure 7 ,In Embodiment 3, two mounting frames 31, two rotating rods 32, two guiding wheel discs 33, and a first power source 35 are used as a laminating unit. In Embodiment 3, a total of three laminating units are provided, which are respectively named the first laminating unit 333, the second laminating unit 334, and the third laminating unit 335 for convenience of description. Taking the fabric transportation direction as the positive direction, the first laminating unit 333, the second laminating unit 334, and the third laminating unit 335 are arranged in sequence along the positive direction. The arrangement heights of the three first pressing rollers 36 decrease in sequence along the positive direction. The guiding wheel disc 33 is provided with an annular groove 331, and a plurality of uniformly arranged dial rods 332 are provided inside the annular groove 331. The ejector pin 43 can abut against the dial rod 332, and the ejector pin 43 pushes the guiding wheel disc 33 to rotate through the dial rod 332.

[0049] Reference Figure 8, although the synchronous lamination of the film material and the fabric is achieved through the ejector pin 43 and the guide wheel disc 33, since the film material is arranged above the fabric, the inclination of the film material cutting into the guide wheel disc 33 is greater than that of the fabric cutting into the guide wheel disc 33. This will cause the length of the film material L1 to be reduced to L2 during the process of piercing and moving downward, resulting in wrinkles in the film material, which is not conducive to the lamination of the film material and the fabric.

[0050] Reference Figure 9 , the arc-shaped pressing plate 363 on the roller core 361 of the present application can be divided into three major areas: x, y, and z. In the x area, due to the action of gravity, the arc-shaped pressing plate 363 is located at the bottom end of the first guide post 362. At this time, the outer diameter of the guide wheel disc 33 is greater than the distance from the arc-shaped pressing plate 363 to the roller core 361; in the y area, due to the action of gravity, the arc-shaped pressing plate 363 is located at the top end of the first guide post 362. At this time, the outer diameter of the guide wheel disc 33 is smaller than the distance from the arc-shaped pressing plate 363 to the roller core 361; in the z area, it transitions from the x area to the y area. Under the action of gravity, the arc-shaped pressing plate 363 will move from the bottom end of the first guide post 362 to the top end. At this time, the surface of the arc-shaped pressing plate 363 and the film material can be approximated as an elliptical surface, so that the length of the fabric intercepted by two adjacent ejector pins 43 is shorter. In Embodiment 3, the film material is vertically tangent to the arc-shaped pressing plate 363 in the first pressing unit 333, which can effectively reduce the wrinkles caused by clarity.

[0051] Reference Figure 10 and Figure 11 , the unwinding assembly 2 includes an unwinding roller 21, a second power source 23 for driving the unwinding roller 21 to rotate, a plurality of limiting blocks 22 installed on the unwinding roller 21, and a driving unit 24 for driving the limiting blocks 22 to move; the driving unit 24 includes a rotating shaft 245 and an input shaft 241 installed and connected inside the unwinding roller 21, a threaded sleeve 242, a moving rod 243, and a connecting rod 244. Threaded portions with opposite threads are respectively provided at both ends of the rotating shaft 245, and the threaded portions are threadedly connected to the threaded sleeve 242. The moving rod 243 is fixedly connected to the limiting block 22, and both ends of the connecting rod 244 are respectively rotatably connected to the connecting rod 244 and the moving rod 243, and the rotating shaft 245 and the input shaft 241 are connected by gears. When installing the film material roll, the driving unit 24 retracts the limiting block 22 into the unwinding roller 21; when the film material roll is installed, the driving unit 24 extends the limiting block 22 and abuts against the film material roll.

[0052] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A preparation process for a film material composite fully light-shielding rolling curtain fabric, characterized in that: The process includes the following steps: a. Making the base fabric; b. Preparing the surface sizing and coating it on the base fabric, followed by gradient drying to obtain the first coating. Control the moisture content of the first coating within 10% - 20%. Then cover the film material on the first coating and perform laminating rolling. Control the temperature of the first coating during lamination at 110 - 160°C. The unwinding speed of the film material is synchronized with the movement speed of the base fabric. After laminating rolling, perform cooling and winding; c. Coating the surface sizing on the film material, followed by gradient drying to obtain the second coating. Control the moisture content of the sizing layer within 10% - 20%. After drying, cool and wind the fabric; d. Processing a protective layer on the second coating.

2. The preparation process of the film composite fully light-shielding rolling curtain fabric according to claim 1, characterized in that: The surface sizing is prepared according to the following weight parts: 25 - 35 parts of the first emulsion with a Tg value in the range of 10 - 50°C, 15 - 25 parts of the second emulsion with a Tg value in the range of -5 - -30°C, 3 - 8 parts of acrylic binder, 5 - 20 parts of titanium dioxide dispersion, 5 - 20 parts of kaolin dispersion, 3 - 8 parts of foam stabilizer, 0.1 - 0.5 parts of crosslinking agent, 0.3 - 0.8 parts of wetting agent, 0 - 1 part of foaming agent, 0.1 - 1 part of ammonia water.

3. The preparation process of the film composite fully light-shielding rolling curtain fabric according to claim 2, characterized in that: Control the viscosity of the surface sizing within 2000 - 3000 cps, adjust the pH value to 8.5 - 11, adjust the solid content to 48% - 52%, and control the foaming ratio within 3 - 5 times.

4. The preparation process of the film composite fully light-shielding rolling curtain fabric according to claim 1, characterized in that: The film material has a heat resistance temperature in the range of 150 - 200°C, a thickness of 0.13 - 0.25 μm, and a grammage of 10 - 30 gsm.

5. A film laminating device for the preparation process of the film material composite fully light-shielding rolling curtain fabric according to any one of claims 1-4, characterized in that: Including A frame (1); An unwinding assembly (2) for installing the film material roll and unwinding the film material along the fabric transportation direction; A transportation assembly (4) including a transportation chain (41) installed on the frame (1) and several thimbles (43) fixedly connected to the transportation chain (41); A lamination assembly (3) including several guide wheel discs (33) installed on the frame (1), a first pressure roller (36) installed on the guide wheel discs (33), and a second pressure roller group (34) provided at the end of the frame (1). The thimble (43) can extend into the guide wheel discs (33); Among them, during the rolling of the guide wheel discs (33) and the first pressure roller (36), the thimble (43) pierces the edge positions of the fabric and the film material, covers the film material on the fabric in a relatively stationary manner, and under the traction of the thimble (43), the fabric and the film material can be pulled and rolled by the second pressure roller group (34).

6. The preparation process of the film material composite fully light-shielding rolling curtain fabric according to claim 5, characterized in that: The frame (1) includes at least two longitudinal frames (11) and at least two transverse frames (12). The projections of the longitudinal frames (11) and the transverse frames (12) in the vertical direction are perpendicular to each other. The length direction of the longitudinal frames (11) is parallel to the fabric movement direction. A moving assembly (121) is installed on the transverse frames (12), and the longitudinal frames (11) are installed at the output end of the moving assembly (121). The lamination assembly (3) is installed on the longitudinal frames (11).

7. The preparation process of the film composite fully light-shielding rolling curtain fabric according to claim 6, characterized in that: The lamination assembly (3) further includes a mounting bracket (31), a rotating rod (32) rotatably connected to the mounting bracket (31), a first power source (35) for driving the rotation of the rotating rod (32), and the guide wheel discs (33) are rotatably connected to the end of the rotating rod (32).

8. The film material composite full-shading rolling curtain fabric preparation device according to claim 7, characterized in that: the first pressing roller (36) is composed of a roller core (361), mounting columns fixed on the surface of the roller core (361), and a plurality of arc-shaped pressing plates (363) slidably connected to the mounting columns, and the roller core (361) is detachably connected to the guide wheel disc (33).

9. The film material composite full-shading rolling curtain fabric preparation device according to claim 8, characterized in that: The unwinding assembly (2) includes an unwinding roller (21), a second power source (23) for driving the unwinding roller (21) to rotate, a plurality of limiting blocks (22) mounted on the unwinding roller (21), and a driving unit (24) for driving the limiting blocks (22) to move; When a film material roll needs to be installed, the driving unit (24) retracts the limiting blocks (22) into the unwinding roller (21); After the film material roll is installed, the driving unit (24) extends the limiting blocks (22) and abuts against the film material roll.

10. The film material composite full-shading rolling curtain fabric preparation device according to claim 9, characterized in that: The driving unit (24) includes a rotating shaft (245) and an input shaft (241) installed and connected inside the unwinding roller (21), a threaded sleeve (242), a moving rod (243), and a connecting rod (244). Threaded portions with opposite threads are provided at both ends of the rotating shaft (245). The threaded portions are threadedly connected to the threaded sleeve (242). The moving rod (243) is fixedly connected to the limiting block (22). Both ends of the connecting rod (244) are rotatably connected to the connecting rod (244) and the moving rod (243). The rotating shaft (245) is connected to the input shaft (241) through gears.

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