Preparation process of a blasting bead composite non-woven fabric

Abstract

This invention discloses a process for preparing a composite nonwoven fabric containing bursting oil beads, comprising the following steps: continuously applying bursting oil beads, spraying adhesive and flipping, sealing the bursting oil beads, and secondary rolling. Bursting oil beads are continuously sprinkled onto the middle of a fluffy nonwoven fabric. Then, adhesive is sprayed onto the upper surface of the upper nonwoven fabric. The fabric is then flipped so that the upper surface of the upper nonwoven fabric faces downwards, and together with the fluffy nonwoven fabric containing the bursting oil beads, it is rolled by a rolling mechanism to seal the bursting oil beads between the bottom fluffy nonwoven fabric layer and the upper nonwoven fabric layer, forming a composite nonwoven fabric containing bursting oil beads. This produces a composite nonwoven fabric with multiple bursting oil beads arranged longitudinally, which can be applied to various fields such as towels, makeup remover pads, wet wipes, and facial masks, thus providing high-end products.

Description

Technical Field

[0001] This invention relates to the field of composite nonwoven fabrics, specifically a preparation process for a bursting bead composite nonwoven fabric. Background Technology

[0002] Bursting beads, also known as flavor capsules, brittle capsules, or beads, are poppable beads that release a bursting sensation when squeezed. Currently, bursting beads are generally used in cigarettes. However, non-woven fabrics are increasingly being used in women's health products, such as face masks, sanitary napkins, makeup remover pads, and wet wipes. The disposable hygiene products market is already largely saturated. With consumption upgrades, the main driving force for future disposable hygiene products will be product premiumization, differentiation, and personalization. Plant essential oils and herbal extracts currently exhibit significant effects in anti-anxiety, skincare, and antibacterial properties. They also have a large market potential for alleviating negative emotions during menstruation in women, and are widely used in the market. This involves spraying plant essential oils or natural herbal extracts onto the liquid-permeable surface or absorbent core of disposable hygiene products during the manufacturing process. However, essential oils and extracts are volatile, resulting in significant loss during packaging and use, leading to unsatisfactory results. Furthermore, disposable hygiene products coated with essential oils or extracts require individual packaging to maximize effectiveness, increasing processing costs. Therefore, combining bursting bead technology with essential oils or extracts in disposable hygiene products is an innovative approach that offers a new way to create a natural, high-end, and differentiated image for our products. Thus, a manufacturing process for bursting bead composite nonwoven fabric needs to be proposed. Summary of the Invention

[0003] The purpose of this invention is to solve the problems in the background art and provide a preparation process for a bursting bead composite nonwoven fabric.

[0004] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0005] A process for preparing a burst bead composite nonwoven fabric includes the following steps:

[0006] S1, Continuously apply essential oil burst beads. The essential oil burst beads are positioned and quantitatively fed by the positioning and quantitative feeding mechanism of the burst bead adding device, and the burst beads are continuously sprinkled on the bottom layer of fluffy non-woven fabric to form three or more uninterrupted burst bead layers.

[0007] S2, spray glue and flip, the upper non-woven fabric is positioned and sprayed with glue by the longitudinal positioning glue spraying mechanism and the transverse glue spraying mechanism (20), no glue is sprayed at the position corresponding to the popping bead, and after spraying glue, it is flipped over and covered on the fluffy non-woven fabric layer containing the popping bead.

[0008] S3, Closed burst beads: The bottom loose nonwoven fabric layer containing burst beads and the top nonwoven fabric are rolled once by a rolling mechanism to seal the burst beads between the bottom loose nonwoven fabric layer and the top nonwoven fabric, forming a composite nonwoven fabric containing burst beads.

[0009] S4, Secondary Rolling: The composite nonwoven fabric with sealed burst beads is rolled a second time through a secondary rolling mechanism to enhance the bonding effect and the flow channel.

[0010] This invention involves continuously sprinkling essential oil capsules onto the center of a fluffy nonwoven fabric. Then, adhesive is sprayed onto the upper surface of the nonwoven fabric, but not onto the area opposite the capsules, ensuring no hot melt adhesive adheres to the capsules. This prevents the capsules from becoming trapped and unable to burst later. The upper nonwoven fabric is then flipped so that its upper surface faces downwards, and together with the fluffy nonwoven fabric containing the essential oil capsules, it is rolled using a rolling mechanism. This seals the capsules between the bottom and top layers of nonwoven fabric, forming a composite nonwoven fabric containing the capsules. A second rolling process deepens the longitudinal and transverse directions, creating longitudinal and transverse flow channels. This allows the essential oil capsules to quickly disperse after bursting, preventing excessive absorption and clumping, thus improving user comfort and solving the problem of capsule displacement. The result is a composite nonwoven fabric with multiple essential oil capsules arranged in an array, applicable to various fields such as towels, makeup remover pads, wet wipes, and face masks, providing high-end products.

[0011] The bursting bead adding device includes a frame, from left to right, with a positioning and metering dispensing mechanism, a primary rolling mechanism, and a secondary rolling mechanism arranged sequentially. Above the primary and secondary rolling mechanisms are a longitudinal positioning glue spraying mechanism and a transverse glue spraying mechanism, which are arranged in parallel. Below the longitudinal positioning glue spraying mechanism and the transverse glue spraying mechanism are two parallel first guide rollers. To the left of the primary rolling mechanism is a second guide roller for flipping the upper nonwoven fabric. The entire device is automated, reducing manual labor, improving production efficiency, and ensuring hygiene.

[0012] The positioning and quantitative discharging mechanism includes a storage hopper, a feeding pipe, a limiting cover, and a feeding roller arranged sequentially from top to bottom on the frame. The feeding pipe is located between two through slots. The inside of the limiting cover is a cavity. An arc-shaped limiting opening is formed on the side of the limiting cover near the feeding roller to facilitate the rotation of the feeding roller. The gap between the arc-shaped limiting opening and the feeding roller is smaller than the outer dimensions of the material. The roller surface of the feeding roller is provided with a number of popping bead discharge grooves along the circumferential direction. There are three or more sets of popping bead discharge grooves arranged along the axial direction of the feeding roller. The area formed between two adjacent partition plates corresponds to one set of popping bead discharge grooves.

[0013] The material limiting cover of the present invention is used to prevent the material from falling off the feeding roller before it is transported onto the non-woven fabric. The bursting beads are dropped onto the top surface of the feeding roller through the feeding pipe via the storage hopper. The material limiting cover scrapes off the excess bursting beads, and only the bursting beads that fall into the bursting bead discharge groove are allowed to continuously and evenly scatter the bursting beads onto the fluffy non-woven fabric, thereby realizing the step of uninterrupted application of essential oil bursting beads.

[0014] The top of the material limiting cover has two or more through slots along its length, and a material separator plate that can be inserted into the through slot is provided above the through slot.

[0015] This invention allows for the addition of several rows of burst beads as needed by inserting a separator plate into the limiting cover, thereby increasing the applicability of the device.

[0016] Preferably, the right side of the partition plate is provided with a first rack, the right side of the first rack is meshed with a first gear, the first gear is connected to a partition motor, the motor end of the partition motor is fixed to the limiting cover, the outer side of the partition plate is provided with a limiting frame, the limiting frame is fixed to the limiting cover, the inner side of the limiting frame is provided with a limiting plate to prevent the partition plate from shaking, and the right side of the limiting frame is provided with a sliding groove to facilitate the up and down movement of the first rack.

[0017] This invention utilizes the rotation of a partition motor to drive the rotation of a first gear, which in turn drives the rotation of a first rack, thereby causing the partition plate to reciprocate up and down. This enables automatic control of the partition plate entering and exiting the limiting cover, achieving the function of adding popping beads in separate rows.

[0018] Preferably, the primary rolling mechanism includes a heating roller and a pop-bead fixing roller rotatably mounted on a frame. The pop-bead fixing roller is positioned above the heating roller and includes a hollow roller body. A rotating shaft is fixed to the center of the roller body, and the rotating shaft is fixedly connected to the inner side of the roller body via a support bar. The roller body can be divided into a front rolling zone, a pop-bead avoidance zone, and a rear rolling zone along the axial direction. The surface of the pop-bead avoidance zone has an annular groove along the circumferential direction. There are three or more annular grooves arranged in an array along the axial direction. Several transverse rolling plates are evenly distributed on the annular grooves, and the transverse rolling plates and the roller body form a pop-bead receiving cavity. The heating roller can be heated by an electric heating wire or by heat transfer oil, which are mature technologies and will not be described in detail in this application.

[0019] This invention utilizes the front and rear rolling zones of the bursting bead fixing roller to allow for hot rolling bonding only on the two sides without the bursting bead when laminating the upper nonwoven fabric after spraying glue with the fluffy nonwoven fabric containing essential oil bursting beads. The areas with bursting beads are not squeezed due to the annular grooves, thus sealing the bursting beads within the composite nonwoven fabric. Simultaneously, the transverse rolling plate can fix the bursting beads within a square frame to prevent them from shifting.

[0020] Preferably, the bottom of the burst bead receiving cavity is provided with several through holes, and each through hole is provided with a plug. The inner side of each set of plugs in the annular groove is connected to a radial telescopic mechanism. The plug moves radially in the burst bead receiving cavity through the radial telescopic mechanism. The groove of the burst bead receiving cavity is fixed with an annular gap-filled silicone plate. The structure of the silicone plate makes the material soft, so that when it is used as a burst bead avoidance area, it will not squeeze the burst bead.

[0021] This invention controls the insertion and exit of the plug core into the burst bead receiving cavity through a radial telescopic mechanism. When the top of the plug core extends to the groove of the burst bead receiving cavity, it cooperates with the annular gap-filling silicone plate to form a rolling surface identical to the rolling zone. When the plug core is retracted into the through hole, a groove is formed, creating a burst bead avoidance zone. This allows it to work with a separator plate, enabling the user to select the number of rows of burst beads to add.

[0022] Preferably, the radial telescopic mechanism includes an inner fixed ring, an outer fixed ring, a second rack, a second gear, and an internal gear. The second rack is located above the internal gear. The outer fixed ring is located outside the inner fixed ring and is concentrically arranged with it. A gear placement space is formed between the outer fixed ring and the inner fixed ring. Radial grooves are formed in the radial direction of the outer fixed ring and the inner fixed ring. The number of radial grooves is the same as the number of plugs in each set on the annular groove. The second rack is slidably disposed in the radial groove. The second gear is disposed in the gear placement space and meshes with the second rack. The internal gear is disposed inside the outer fixed ring and meshes with the second gear. The internal gear and the outer fixed ring are rotatably connected by bearings. Except for the second gear connected to the rotary motor, the other second gears are rotatably connected to the side plates by bearings. The end of the second gear is fixed with the plug. One of the second gears is connected to the rotary motor. Side plates are fixed on both sides of the outer fixed ring. The middle part of the side plates is fixed on the rotating shaft.

[0023] This invention uses a rotary motor to drive one of the second gears to rotate, which in turn drives the inner gear to rotate, thereby driving the second rack to reciprocate along the radial direction, thus controlling the insertion and exit of the plug core into the burst bead receiving cavity.

[0024] Preferably, a transmission roller is provided behind the secondary rolling mechanism. The middle part of the transmission roller is provided with a groove along the circumferential direction to prevent the popping beads from being squeezed, so as to reduce the squeezing of the popping beads during subsequent transmission. The secondary rolling mechanism is provided with the same popping bead fixing roller as the primary rolling mechanism. The roller at the bottom of the secondary rolling mechanism is an ordinary roller and does not require a heating roller.

[0025] The longitudinal positioning glue spraying mechanism includes a fixing strip, and the bottom of the fixing strip is provided with a first glue gun that cooperates with the pop bead fixing roller. When the pop bead avoidance area is transformed into a rolling area, the first glue gun sprays glue on the upper non-woven fabric. When it is the pop bead avoidance area, the first glue gun does not spray glue, so that the glue spraying area of ​​the first glue gun can be selected according to the number of rows of pop beads added.

[0026] The horizontal glue spraying mechanism includes a slide rail, and a second glue gun is provided in the sliding direction of the slide rail. By sliding the second glue gun on the slide rail, horizontal glue spraying can be performed, while avoiding the areas where popping beads need to be set.

[0027] In summary, the beneficial effects of this invention are as follows:

[0028] 1. This invention involves continuously sprinkling essential oil capsules onto the center of a fluffy nonwoven fabric. Then, adhesive is sprayed onto the upper surface of the upper nonwoven fabric, but not onto the area opposite the capsules, ensuring no hot melt adhesive is applied to the capsules. This prevents the capsules from becoming trapped by hot melt adhesive and unable to burst later. The upper nonwoven fabric is then flipped so that its upper surface faces downwards, and together with the fluffy nonwoven fabric containing the essential oil capsules, it is rolled using a rolling mechanism. This seals the capsules between the bottom and top layers of the fluffy nonwoven fabric, forming a composite nonwoven fabric containing the capsules. A second rolling process deepens the longitudinal and transverse directions, creating longitudinal and transverse flow channels. This allows the essential oil capsules to quickly disperse after bursting, preventing excessive absorption and clumping, thus improving user comfort and solving the problem of capsule displacement. The result is a composite nonwoven fabric with multiple essential oil capsules arranged in an array, applicable to various fields such as towels, makeup remover pads, wet wipes, and face masks, providing high-end products.

[0029] 2. The material limiting cover of the invention is used to prevent the material from falling off the feeding roller before it is transported to the non-woven fabric. The bursting beads are dropped from the feeding pipe to the top surface of the feeding roller through the storage hopper. The material limiting cover scrapes off the excess bursting beads. Only the bursting beads that fall into the bursting bead discharge groove are continuously and evenly scattered onto the fluffy non-woven fabric, so as to achieve the step of uninterrupted application of essential oil bursting beads.

[0030] 3. This invention, through the cooperation of the front rolling area, the rear rolling area, and the bursting bead receiving cavity of the bursting bead fixing roller, allows the upper nonwoven fabric after spraying glue and the fluffy nonwoven fabric with added essential oil bursting beads to be laminated. Only the two sides without essential oil bursting beads are heat-rolled and laminated. The areas with bursting beads are not squeezed by the bursting bead receiving cavity, thus sealing the bursting beads in the laminated nonwoven fabric. At the same time, the transverse rolling plate can fix the bursting beads in a square frame to prevent the bursting beads from shifting.

[0031] 4. The present invention controls the insertion and exit of the plug core into the burst bead receiving cavity through a radial telescopic mechanism. When the top of the plug core extends to the groove of the burst bead receiving cavity, it cooperates with the long annular gap-filling silicone plate to form a rolling surface identical to the rolling zone. When the plug core is retracted into the through hole, a groove is formed, forming a burst bead avoidance zone, which can be used with a separator plate to allow the user to select the number of rows of burst beads to add. Attached Figure Description

[0032] Figure 1 This is an overall schematic diagram of the popping bead adding device of the present invention;

[0033] Figure 2 This is the present invention. Figure 1 An enlarged view of point A;

[0034] Figure 3 This is a front view schematic diagram of the popping bead adding device of the present invention;

[0035] Figure 4 This is a schematic diagram of the positioning and quantitative discharging mechanism of the present invention;

[0036] Figure 5 This is a schematic diagram of the material separator plate of the present invention located above the through groove;

[0037] Figure 6 This is a bottom view of the material limiting cover inserted into the material separator plate of the present invention;

[0038] Figure 7 This is a schematic diagram of the through-slot of the present invention;

[0039] Figure 8 This is a schematic diagram of the burst bead fixing roller of the present invention;

[0040] Figure 9 This is a schematic diagram of the plug core of the popping bead fixing roller of the present invention in the groove of the popping bead receiving cavity;

[0041] Figure 10 This is a schematic diagram of the connection between the roller body and the rotating shaft of the present invention;

[0042] Figure 11 This is a schematic diagram of multiple radial telescopic mechanisms of the present invention fixed on a rotating shaft;

[0043] Figure 12 This is a schematic diagram of the radial telescopic mechanism of the present invention;

[0044] Figure 13 This is a schematic diagram of the radial telescopic mechanism of the present invention after the side plate is fixed;

[0045] Figure 14 This is a schematic diagram of the radial groove of the radial telescopic mechanism of the present invention;

[0046] Figure 15This is a cross-sectional schematic diagram of the plug core of the present invention at the opening of the annular groove;

[0047] Figure 16 This is a cross-sectional schematic diagram of the rubber roller of the present invention;

[0048] Figure 17 This is a schematic diagram of the adhesive spraying mechanism of the present invention;

[0049] Figure 18 This is a schematic diagram of the composite nonwoven fabric guide channel of the present invention;

[0050] Figure 19 This is a cross-sectional schematic diagram of the composite nonwoven fabric of the present invention. Detailed Implementation

[0051] The following specific embodiments are merely illustrative of the present invention and are not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of the present invention.

[0052] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0053] Example

[0054] like Figure 18-19 As shown, a process for preparing a burst bead composite nonwoven fabric includes the following steps:

[0055] S1, continuously apply essential oil burst beads. The essential oil burst beads are positioned and quantitatively discharged by the positioning and quantitative dispensing mechanism 1 of the burst bead adding device, and the burst beads are continuously sprinkled on the bottom layer of fluffy non-woven fabric to form three or more uninterrupted burst bead layers.

[0056] S2, spray glue and flip, the upper non-woven fabric is positioned and sprayed with glue by the longitudinal positioning glue spraying mechanism 2 and the transverse glue spraying mechanism (20), no glue is sprayed at the position corresponding to the popping beads, and after spraying glue, it is flipped over and covered on the fluffy non-woven fabric layer containing popping beads.

[0057] S3, Sealing the bursting beads: The bottom loose nonwoven fabric layer containing bursting beads and the top nonwoven fabric are rolled once by the rolling mechanism 3 to seal the bursting beads between the bottom loose nonwoven fabric layer and the top nonwoven fabric, forming a composite nonwoven fabric containing bursting beads.

[0058] S4, Secondary rolling: The composite nonwoven fabric with sealed burst beads is rolled twice through the secondary rolling mechanism 4 to enhance the bonding effect, the transverse guide groove 204 and the longitudinal guide groove 201.

[0059] like Figure 1As shown, the popping bead adding device 1 includes a frame 40. The frame 40 is provided with a positioning and quantitative discharging mechanism 1, a primary rolling mechanism 3 and a secondary rolling mechanism 4 in sequence from left to right. A longitudinal positioning glue spraying mechanism 2 and a transverse glue spraying mechanism 20 are provided above the primary rolling mechanism 3 and the secondary rolling mechanism 3. The longitudinal positioning glue spraying mechanism 2 and the transverse glue spraying mechanism 20 are arranged in parallel. Two parallel first guide rollers 21 are provided below the longitudinal positioning glue spraying mechanism 2 and the transverse glue spraying mechanism 20. A second guide roller 22 for flipping the upper nonwoven fabric is provided on the left side of the primary rolling mechanism (3).

[0060] like Figure 4-7 As shown, the positioning and quantitative discharging mechanism 1 includes a storage hopper 41, a feeding pipe 42, a limiting cover 43, and a feeding roller 44 arranged sequentially from top to bottom on the frame 40. The limiting cover 43 has a hollow cavity 431 inside. An arc-shaped limiting opening 439 is formed on the side of the limiting cover 43 near the feeding roller 44 to facilitate the rotation of the feeding roller 44. The gap between the arc-shaped limiting opening 439 and the feeding roller is smaller than the outer dimensions of the material. The roller surface of the feeding roller 44 has a plurality of popping bead discharge grooves 441 along the circumferential direction. Three or more sets of popping bead discharge grooves 441 are arranged along the axial direction of the feeding roller 44. The top of the limiting cover 43 has two openings along the length direction. The above-mentioned through groove 430 has a partition plate 432 that can be inserted into the through groove 430. The right side of the partition plate 432 has a first rack 433. The right side of the first rack 433 is meshed with a first gear 434. The first gear 434 is connected to a partition motor 435. The motor end of the partition motor 435 is fixed to the limiting cover 43. The outer side of the partition plate 432 has a limiting frame 436. The limiting frame 436 is fixed to the limiting cover 43. The inner side of the limiting frame 436 has a limiting plate 437 to prevent the partition plate 432 from shaking. The right side of the limiting frame 436 has a sliding groove 438 to facilitate the up and down movement of the first rack 433.

[0061] like Figure 8-16As shown, the primary rolling mechanism 3 includes a heating roller 31 rotatably mounted on a frame and a pop-bead fixing roller 32. The pop-bead fixing roller 32 is positioned above the heating roller 31 and includes a hollow roller body 321. A rotating shaft 323 is fixed to the middle of the roller body 321. The rotating shaft 323 is fixedly connected to the inner side of the roller body 321 via a support bar 329. The roller body 321 can be divided into a front rolling area 341, a pop-bead avoidance area 342, and a rear rolling area 343 along the axial direction. The surface of the pop-bead avoidance area 342 has an annular groove 322 along the circumferential direction. There are three or more annular grooves 322 arranged in an array along the axial direction. Several transverse rolling plates 326 are evenly distributed on the annular grooves 322. The transverse rolling plates 326 and the roller body 321 form a pop-bead receiving cavity 320.

[0062] The bottom of the burst bead receiving cavity (320) is provided with several through holes (324), and each through hole (324) is provided with a plug (325). The inner side of each set of plugs (325) in the annular groove (322) is connected to a radial telescopic mechanism (33). The plug (325) moves radially in the burst bead receiving cavity (320) through the radial telescopic mechanism (33). The groove of the burst bead receiving cavity (320) is fixed with an annular gap-filling silicone plate (327). The radial telescopic mechanism 33 includes an inner fixing ring 331, an outer fixing ring 332, a second rack 333, a second gear 334, and an internal gear 335. The outer fixing ring 332 is located outside the inner fixing ring 331 and is concentric with it. A gap is formed between the outer fixing ring 332 and the inner fixing ring 331. The gear placement space 336 has radial grooves 337 formed in the radial direction of the outer fixed ring 332 and the inner fixed ring 331. The number of radial grooves is the same as the number of each set of plug cores 325 on the annular groove 322. The second rack 333 is slidably disposed in the radial grooves 337. The second gear 334 is disposed in the gear placement space 336 and meshes with the second rack 333. The inner gear 335 is disposed on the inner side of the outer fixed ring 332 and meshes with the second gear 334. The plug core 325 is fixed to the end of the second rack 333. One of the second gears 334 is connected to a rotary motor 330. Side plates 328 are fixed on both sides of the outer fixed ring 332. The middle part of the side plates 328 is fixed on the rotating shaft 323.

[0063] like Figure 17 As shown, a transmission roller 5 is provided behind the secondary rolling mechanism 4, and a groove 51 for preventing the popping beads from being squeezed is provided in the middle of the transmission roller 4 along the circumferential direction.

[0064] For the production process combining pods and nonwoven fabric, the characteristics and parameters of the transfer rollers require special attention. First, the roller material should possess a certain degree of softness and elasticity to reduce pressure on the pods. For example, high-quality rubber materials can be selected, providing adequate cushioning during transport and reducing the risk of pod bursting. Alternatively, a sponge layer can be wrapped around the transfer roller. Second, the surface roughness of the roller is also crucial. An excessively rough surface may increase friction with the material, thus exerting greater pressure on the pods. Therefore, rollers with smooth surfaces should be selected, or surface treatments such as grinding or polishing should be applied to reduce surface roughness.

[0065] II. Material Selection and Improvement

[0066] Choose the appropriate burst bead material

[0067] Consider the size and shape of the burst beads. Smaller burst beads are more easily compressed, so you can appropriately increase their size, or choose a more regular shape with stronger compression resistance, such as spherical or oval. Burst bead size is between 2mm and 10mm.

[0068] Optimize the performance of nonwoven fabrics

[0069] Choose a soft, elastic nonwoven fabric. This type of nonwoven fabric can better adapt to the shape of the burst beads when combined with them, reducing localized pressure concentration. Material screening and performance testing of the nonwoven fabric can be performed to ensure it meets production requirements.

[0070] Fluffy nonwoven fabric is a material with unique properties, and it also has an important influence in the production of combining popping beads with nonwoven fabric.

[0071] I. Structural Characteristics

[0072] 1. Loose fibers

[0073] Its internal fiber structure is relatively loose, filled with numerous air gaps. This structure gives the nonwoven fabric excellent softness and elasticity, which can buffer external pressure to a certain extent and reduce the compression of the burst beads. When in contact with the burst beads, the fluffy fibers can adapt to the shape of the burst beads, disperse pressure, and reduce the risk of bursting.

[0074] The air gaps also give the fluffy nonwoven fabric good thermal and sound insulation properties. In some production environments, this may help maintain stable temperature and humidity, reducing the impact of external factors on the bonding process between the beads and the nonwoven fabric.

[0075] 2. Relatively thick

[0076] Compared to regular nonwoven fabrics, fluffy nonwoven fabrics are typically thicker. This increases the material's cushioning capacity, providing more protection for the burst beads. During high-speed production with pressure rollers, the thicker nonwoven fabric can absorb more impact force, reducing the pressure on the burst beads. The greater thickness also makes the fluffy nonwoven fabric more three-dimensional in appearance, giving the product a better texture and feel.

[0077] II. Performance Advantages

[0078] 1. Good breathability

[0079] The loose, nonwoven fabric has excellent breathability, allowing air to circulate freely. This is crucial for the combination of the burst beads and the nonwoven fabric, as good breathability prevents moisture buildup, keeping the burst beads dry and stable. At the same time, the breathable nonwoven fabric also helps dissipate heat during production, preventing localized overheating that could damage the burst beads.

[0080] The high breathability also makes the product more comfortable to use and prevents it from feeling stuffy.

[0081] 2. Moderate moisture absorption

[0082] While fluffy nonwoven fabrics have some hygroscopicity, they generally do not absorb excessive moisture. This is highly beneficial for the preservation of burst beads, as excessive moisture can cause the beads to break or lose their activity. Moderate hygroscopicity allows for the absorption of small amounts of moisture that may be generated during production without affecting the performance of the burst beads. In some special applications, such as those requiring moisture retention of the burst beads, the hygroscopicity of the fluffy nonwoven fabric can be specially treated to adjust its properties to meet specific needs.

[0083] Nonwoven fabrics include: all nonwoven fabrics

[0084] The amount of popping beads added is 1-100.

[0085] The thickness of the fluffy nonwoven fabric is 5-50mm, and the basis weight is 10-60gsm.

[0086] The weight of the upper nonwoven fabric is 5-25 gsm.

[0087] like Figure 18 As shown, the longitudinal positioning glue spraying mechanism 2 includes a fixing strip 211, and the bottom of the fixing strip is provided with a first glue gun 212 that cooperates with the popping bead fixing roller 32. The transverse glue spraying mechanism (20) includes a slide rail (202), and a second glue gun (203) is provided in the sliding direction of the slide rail.

[0088] Working principle: such as Figure 1-19As shown, when adding a row of popping beads, the controller controls the rotation of the partition motor 435, which in turn drives the rotation of the first gear 434, which in turn drives the rotation of the first rack 433, which in turn drives the partition plate 432 to move downward, so that the partition plate 432 is inserted into the through groove. At the same time, the controller controls the rotation motor 330 to rotate, which in turn drives the rotation motor 330 of the radial telescopic mechanism 33 to rotate one of the second gears 334, which in turn drives the rotation of the inner gear 335, which in turn drives the second rack 333 to move outward in the radial direction until the top of the plug core 325 extends into the groove of the popping bead receiving cavity (320), and cooperates with the annular gap filling silicone plate to form the same rolling surface as the rolling area. The controller controlling the motor is a mature technology, so it will not be described in detail in this case. Afterwards, the popping beads 403 are dropped into the limiting cover 43 through the feeding pipe 42 via the storage hopper 41, and are limited by the partition plate 432 in the area between the two partition plates 432. The feeding roller 44 rotates, and the popping beads 403 are dropped into the limiting cover 43 through the feeding pipe 42. 3. Excess burst beads 403 are scraped off, leaving only the burst beads 403 that fall into the burst bead feeding groove 441. When the groove 441 rotates to the bottom, the burst beads 403 fall onto the fluffy non-woven fabric 401, thus continuously and evenly scattering the burst beads 403 onto the bottom fluffy non-woven fabric 401. At the same time, the upper non-woven fabric 402 is sprayed with adhesive on its upper surface by the longitudinal adhesive spraying mechanism 2 and the transverse adhesive spraying mechanism 20. No adhesive is sprayed at the positions corresponding to the burst beads. After adhesive spraying, the fabric is flipped over to cover the fluffy non-woven fabric layer containing the burst beads. The bottom layer of fluffy nonwoven fabric 401 containing burst beads and the top layer of nonwoven fabric 402 are rolled once by a rolling mechanism 3 to seal the burst beads between the bottom layer of fluffy nonwoven fabric and the top layer of nonwoven fabric, forming a composite nonwoven fabric containing burst beads. The composite nonwoven fabric with burst beads 403 sealed is rolled a second time by a rolling mechanism 4 to obtain a composite nonwoven fabric with multiple essential oil burst beads arrayed. It can be applied to different fields such as towels, makeup remover pads, wet wipes, and face masks, thus providing high-end products.

[0089] To meet user needs, if more rows of popping beads are required, the controller simply controls the rotation of the partition motor 435, which in turn drives the rotation of the first gear 434, which in turn drives the rotation of the first rack 433, causing the partition plate 432 to move upward. This increases the range within which the popping beads 403 fall into the limiting cover 43. Simultaneously, the controller controls the rotation of the rotary motor 330, which in turn drives the rotation of the radial telescopic mechanism 33, which in turn drives one of the second gears 334, which in turn drives the rotation of the internal gear 335, causing the second rack 333 to move inward along the radial direction until the plug core 325 retracts into the through hole, forming a groove and creating a popping bead avoidance zone. When the popping bead avoidance zone 432 transforms into a rolling zone, the first glue gun on the corresponding upper non-woven fabric sprays glue. When it is the popping bead avoidance zone, the first glue gun does not spray glue, thus cooperating with the partition plate and allowing the user to select the number of rows of popping beads to add.

Claims

1. A preparation process for a burst bead composite nonwoven fabric, characterized in that, Includes the following steps: S1, continuously apply essential oil burst beads. The essential oil burst beads are positioned and quantitatively discharged through the positioning and quantitative discharge mechanism (1) of the burst bead adding device, and the burst beads are continuously sprinkled on the bottom fluffy non-woven fabric to form three or more uninterrupted burst bead layers. The size of the burst beads is 2mm-10mm. S2, spray glue and flip, the upper non-woven fabric is positioned and sprayed with glue by the longitudinal positioning glue spraying mechanism (2) and the transverse glue spraying mechanism (20), no glue is sprayed at the position corresponding to the popping bead, and after spraying glue, it is flipped over and covered on the fluffy non-woven fabric layer containing the popping bead. S3, Close the bursting beads. The bottom loose nonwoven fabric layer containing bursting beads and the upper nonwoven fabric are rolled once by a rolling mechanism (3) to seal the bursting beads between the bottom loose nonwoven fabric layer and the upper nonwoven fabric, forming a composite nonwoven fabric containing bursting beads. S4, Secondary rolling: The composite nonwoven fabric with burst beads is rolled twice by the secondary rolling mechanism (4) to enhance the bonding effect and form longitudinal guide grooves (201) and transverse guide grooves (204) on the burst bead composite nonwoven fabric. The popping bead adding device includes a frame (40), and the frame (40) is provided with a positioning and quantitative discharging mechanism (1), a primary rolling mechanism (3) and a secondary rolling mechanism (4) in sequence from left to right. Above the primary rolling mechanism (3) and the secondary rolling mechanism (4) are a longitudinal positioning glue spraying mechanism (2) and a transverse glue spraying mechanism (20). The longitudinal positioning glue spraying mechanism (2) and the transverse glue spraying mechanism (20) are arranged in parallel. Below the longitudinal positioning glue spraying mechanism (2) and the transverse glue spraying mechanism (20) are two parallel first guide rollers (21). On the left side of the primary rolling mechanism (3) is a second guide roller (22) that flips the upper nonwoven fabric. The primary rolling mechanism (3) includes a heating roller (31) and a popping bead fixing roller (32) rotatably mounted on a frame. The popping bead fixing roller (32) is positioned above the heating roller (31). The popping bead fixing roller (32) includes a hollow roller body (321). A rotating shaft (323) is fixed to the middle of the roller body (321). The rotating shaft (323) is fixedly connected to the inner side of the roller body (321) via a support bar (329). The roller body (321) rotates along the shaft... The roller body is divided into a front rolling zone (341), a pop bead avoidance zone (342), and a rear rolling zone (343) in the axial direction. The surface of the pop bead avoidance zone (342) is provided with an annular groove (322) along the circumferential direction. There are more than three annular grooves (322) in the axial direction. Several transverse rolling plates (326) are evenly distributed on the annular grooves (322). The transverse rolling plates (326) and the roller body (321) form a pop bead receiving cavity (320). The bottom of the burst bead receiving cavity (320) is provided with several through holes (324), and each through hole (324) is provided with a plug (325). The inner side of each set of plugs (325) in the annular groove (322) is connected to a radial telescopic mechanism (33). The plug (325) moves radially in the burst bead receiving cavity (320) through the radial telescopic mechanism (33). The groove of the burst bead receiving cavity (320) is fixed with an annular gap-filling silicone plate (327). The radial telescopic mechanism (33) includes an inner fixed ring (331), an outer fixed ring (332), a second rack (333), a second gear (334), and an internal gear (335). The outer fixed ring (332) is located outside the inner fixed ring (331) and is concentric with it. A gear placement space (336) is formed between the outer fixed ring (332) and the inner fixed ring (331). Radial grooves (337) are formed in the radial direction of the outer fixed ring (332) and the inner fixed ring (331). The number of radial grooves is the same as the number of each set of plugs (325) on the annular groove (322). The second gear... The rack (333) is slidably disposed in the radial groove (337), the second gear (334) is disposed in the gear placement space (336) and meshes with the second rack (333), the internal gear (335) is disposed on the inner side of the outer fixed ring (332) and meshes with the second gear (334), the end of the second rack (333) is fixed with the plug core (325), one of the second gears (334) is connected to a rotary motor (330), the outer fixed ring (332) is fixed with side plates (328) on both sides, and the middle part of the side plates (328) is fixed on the rotating shaft (323); The secondary rolling mechanism (4) is further provided with a transmission roller (5) behind it. The middle part of the transmission roller (5) is provided with a groove (51) to prevent the popping beads from being squeezed along the circumferential direction.

2. The preparation process of the burst bead composite nonwoven fabric according to claim 1, characterized in that, The positioning and quantitative discharging mechanism (1) includes a storage hopper (41), a feeding pipe (42), a limiting cover (43), and a feeding roller (44) arranged sequentially from top to bottom on the frame (40). The limiting cover (43) has a cavity (431) inside. The limiting cover (43) has an arc-shaped limiting port (439) formed on the side of the limiting cover (43) near the feeding roller (44) to facilitate the rotation of the feeding roller (44). The roller surface of the feeding roller (44) has a plurality of popping bead discharge grooves (441) along the circumferential direction. The popping bead discharge grooves (441) are arranged in three or more groups along the axial direction of the feeding roller (44).

3. The preparation process of a burst bead composite nonwoven fabric according to claim 2, characterized in that, The top of the limiting cover (43) has two or more through slots (430) along the length direction, and a partition plate (432) that can be inserted into the through slot (430) is provided above the through slot (430).

4. The preparation process of a burst bead composite nonwoven fabric according to claim 3, characterized in that, The partition plate (432) has a first rack (433) on its right side, and a first gear (434) meshes with the right side of the first rack (433). A partition motor (435) is connected to the first gear (434). The motor end of the partition motor (435) is fixed on the limiting cover (43). A limiting frame (436) is provided on the outer side of the partition plate (432). The limiting frame (436) is fixed on the limiting cover (43). A limiting plate (437) is provided on the inner side of the limiting frame (436) to prevent the partition plate (432) from shaking. A sliding groove (438) is provided on the right side of the limiting frame (436) to facilitate the up and down movement of the first rack (433).

5. The preparation process of a burst bead composite nonwoven fabric according to claim 1, characterized in that, The longitudinal positioning glue spraying mechanism (2) includes a fixing strip (211), and the bottom of the fixing strip (211) is provided with a first glue gun (212) that cooperates with the popping bead fixing roller (32). The transverse glue spraying mechanism (20) includes a slide rail (202), and a second glue gun (203) is provided in the sliding direction of the slide rail.

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