A longitudinal folding composite core manufacturing device and process thereof

Abstract

The application belongs to the technical field of sanitary products, and relates to a longitudinal folding composite core manufacturing device, which comprises a unwinding mechanism, a composite sizing mechanism, a feeding mechanism, a partitioning suction and stripping mechanism and a folding mechanism. The composite sizing mechanism is used for applying adhesive to the surface of upper material, intermediate material or lower material. The feeding mechanism is used for applying liquid-absorbing filler. The partitioning suction and stripping mechanism comprises a first negative pressure bin and a suction and stripping die. The suction and stripping die comprises a partitioning area which penetrates the suction and stripping die and is in communication with the first negative pressure bin, and is used for sucking and stripping the applied liquid-absorbing filler. The folding mechanism is used for folding the upper material, the intermediate material and the lower material to form a composite core. The folding and sizing mechanism is used for applying adhesive to the surface of the composite core. The folding mechanism is used for folding the two sides of the composite core to the middle to form a longitudinal folding composite core. The longitudinal folding composite core manufacturing device can complete the longitudinal folding composite core manufacturing on line. After the composite core is folded, a double-layer structure is formed, a guide groove is naturally formed in the middle, the liquid-absorbing property is improved, and the diffusion speed is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of sanitary products, and particularly relates to a longitudinal folding composite core manufacturing device and a process thereof. BACKGROUND

[0002] In order to improve the liquid permeability of disposable sanitary products, a flow guide groove is usually made on the composite core of the sanitary product in the prior art to improve the permeability and diffusion speed of the liquid and avoid leakage or flooding. The manufacturing device structure of the flow guide groove of the sanitary product in the prior art is relatively complex. SUMMARY

[0003] To solve the technical problem of the complex manufacturing device structure of the flow guide groove of the sanitary product in the prior art, the present application provides a longitudinal folding composite core manufacturing device and a process thereof.

[0004] To solve the above technical problem, the technical solution adopted by the present application is as follows: a longitudinal folding composite core manufacturing device, comprising a unwinding mechanism for unwinding an upper layer material, an intermediate layer material and a lower layer material;

[0005] A composite sizing mechanism is arranged for applying a sizing agent to the surface of the upper layer material, the intermediate layer material or the lower layer material;

[0006] A feeding mechanism is arranged for applying a liquid absorbing filler between the upper layer material and the lower layer material;

[0007] A partitioned suction and stripping mechanism is arranged, comprising a first negative pressure bin and a suction and stripping die, the suction and stripping die comprises a partitioned area, the partitioned area penetrates through the suction and stripping die and communicates with the first negative pressure bin, and is used for suction and stripping of the applied liquid absorbing filler, the partitioned area extends along the width direction of the intermediate layer material, and the length of the partitioned area is not less than the width of the intermediate layer material;

[0008] A composite mechanism is arranged for compounding the upper layer material, the intermediate layer material and the lower layer material to form a composite core, and the partitioned suction and stripping mechanism is located between the feeding mechanism and the composite mechanism;

[0009] A folding and sizing mechanism is arranged for applying a sizing agent to the surface of the composite core;

[0010] A folding mechanism is arranged for folding the two sides of the composite core to the middle to form a longitudinal folding composite core.

[0011] In some embodiments, the unwinding mechanism comprises a first unwinding mechanism for unwinding the upper layer material, a second unwinding mechanism for unwinding the intermediate layer material and a third unwinding mechanism for unwinding the lower layer material.

[0012] In some embodiments, one side of the second unwinding mechanism is provided with a heating mechanism.

[0013] In some embodiments, a first bonding position and a second bonding position are further included, the intermediate material and the lower material are bonded to form a lower composite layer at the first bonding position, and the upper material and the lower composite layer are bonded to form a composite layer at the second bonding position.

[0014] In some embodiments, the feeding mechanism is provided in two groups, and the two groups of feeding mechanisms are arranged between the first bonding position and the second bonding position, and are used to apply liquid-absorbing fillers to the intermediate layer material of the lower composite layer, and the blocking and suction mechanism is arranged between the feeding mechanism and the second bonding position.

[0015] In some embodiments, the feeding mechanism is provided in two groups, and the two groups of feeding mechanisms are arranged between the first bonding position and the second bonding position, and are used to apply liquid-absorbing fillers to the intermediate layer material of the lower composite layer, and the blocking and suction mechanism is arranged between the feeding mechanism and the second bonding position.

[0016] In some embodiments, a negative pressure mechanism is further arranged opposite to the blocking and suction mechanism, the negative pressure mechanism includes a second negative pressure chamber and a suction mold, the suction mold includes a suction area and a non-suction area, the suction area penetrates through the suction mold and communicates with the second negative pressure chamber, and the non-suction area corresponds to the blocking area.

[0017] In some embodiments, a vacuum box is arranged below the feeding mechanism.

[0018] In some embodiments, a folding mechanism is further arranged on the feeding side of the composite mechanism, and the composite mechanism includes a pressing point device and a composite device arranged in sequence.

[0019] The application further provides a manufacturing process of the longitudinal folding composite core manufacturing device, the upper material, the intermediate layer material and the lower material are unwound, adhesive is applied to the surface of the upper material, the intermediate layer material or the lower material, liquid-absorbing fillers are applied between the upper material and the lower material, the applied liquid-absorbing fillers are selectively absorbed and removed by the blocking and suction mechanism, and then the upper material, the intermediate layer material and the lower material are combined to form a composite core; adhesive is applied to the surface of the composite core by the folding and gluing mechanism, and finally the two sides of the composite core are folded to the middle by the folding mechanism, to form a longitudinal folding composite core.

[0020] Beneficial effects: the device has simple structure, directly folds the two sides of the composite core body to the middle, can complete the longitudinal folding composite core body production in line, the composite core body forms double-layer structure after folding, the width of the two sides folded to the middle is less than the width of the longitudinal folding composite core body as a whole, does not need to additionally manufacture the flow guide groove, naturally forms the flow guide groove, is beneficial to improve the liquid absorption characteristics and diffusion speed. And there is a gap between the composite core bodies on the upper and lower layers, which is beneficial to improve the diffusion speed. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a longitudinal folding composite core body production device structure schematic view of the application;

[0022] Figure 2 It is a partitioning and absorbing mechanism structure schematic view;

[0023] Figure 3 It is another embodiment of the production device structure schematic view;

[0024] Figure 4 It is a longitudinal folding composite core body cross section schematic view;

[0025] Figure 5 It is a longitudinal folding composite core body structure schematic view;

[0026] In the figure 1. Longitudinal folding composite core body, 11. Gap, 12. No liquid absorbing filler area, 10. Upper layer material, 20. Middle layer material, 30. Lower layer material, 101. First unwinding mechanism, 102. Second unwinding mechanism, 103. Third unwinding mechanism, 201. First gluing mechanism, 202. Second gluing mechanism, 203. Third gluing mechanism, 300. Feeding mechanism, 301. First feeding mechanism, 302. Second feeding mechanism, 303. Vacuum box, 401. First negative pressure bin, 402. Absorbing film, 403. Partitioning area, 501. Composite device, 502. Pressure point device, 503. Edge folding mechanism, 600. Folding mechanism, 601. Folding and gluing mechanism, 700. Heating mechanism, 801. First bonding position, 802. Second bonding position, 901. Second negative pressure bin, 902. Absorbing die. DETAILED DESCRIPTION

[0027] The application will be further described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative changes belong to the protection scope of the application.

[0028] As Figures 1-3 shown, a longitudinal folding composite core body production device, comprising an unwinding mechanism for unwinding the upper layer material 10, the middle layer material 20 and the lower layer material 30;

[0029] A composite adhesive application mechanism is used to apply adhesive to the surface of the upper layer material 10, the middle layer material 20, or the lower layer material 30;

[0030] The feeding mechanism 300 is used to apply liquid-absorbing filler between the upper material 10 and the lower material 30;

[0031] The isolation suction and release mechanism includes a first negative pressure chamber 401 and a suction and release mold 402. The suction and release mold 402 includes a partition area 403. The partition area 403 extends through the suction and release mold 402 and communicates with the first negative pressure chamber 401. It is used to suction and release the applied liquid-absorbing filler. The partition area 403 extends along the width direction of the intermediate layer material 20, and the length of the partition area 403 is not less than the width of the intermediate layer material 20.

[0032] A composite mechanism is used to combine the upper layer material 10, the middle layer material 20 and the lower layer material 30 to form a composite core. The partition suction and descrambling mechanism is located between the feeding mechanism 300 and the composite mechanism.

[0033] The folding and gluing mechanism 601 is used to apply adhesive to the surface of the composite core;

[0034] The folding mechanism 600 is used to fold the two sides of the composite core towards the middle to form a longitudinally folded composite core 1.

[0035] In this invention, after the feeding mechanism 300 applies liquid-absorbing filler between the upper material 10 and the lower material 30, before the composite mechanism forms the composite core, the liquid-absorbing filler at the corresponding position in the partition area 403 can be removed using the partition suction and removal mechanism. Figure 5 As shown, after the composite core is formed by the composite mechanism, the composite core has a non-absorbent filler area 12 corresponding to the partition area 403, naturally forming a partition. When divided into individual core units, the absorbent filler will not be exposed at the cut, avoiding the problem of absorbent filler leakage. At the same time, the non-absorbent filler area 12 is free of absorbent filler, which also facilitates the subsequent composite mechanism to composite this area 12, such as hot pressing or ultrasonic composite, thereby sealing this position and preventing the leakage of absorbent filler when the core is cut into individual units. The principle of the partition suction and removal mechanism is as follows: the first negative pressure chamber 401 forms a negative pressure in the partition area 403 of the suction and removal mold 402. When the partition area 403 absorbs the absorbent filler, the absorbent filler in the corresponding area can be removed, making the absorbent filler in that area less or even disappear. Specifically, the suction demolding 402 can be set in the form of a circular roller, with a first negative pressure chamber 401 formed inside the roller, and the surface of the roller being the suction demolding 402. Multiple partition areas 403 can be set at intervals on the suction demolding 402.

[0036] A folding and gluing mechanism 601 and a folding mechanism 600 are added after the composite mechanism. After the composite core is formed, the folding and gluing mechanism 601 applies adhesive to the surface of the composite core. Then, the folding mechanism 600 folds the two sides of the composite core towards the middle, leaving a certain gap 11 in the middle. After the two sides are folded, they are pasted onto the main structure of the composite core, forming a double-layer structure. The gap 11 is a naturally formed guide groove, thus forming a longitudinally folded composite core 1, the structure of which is as follows. Figure 4 As shown. The present invention has a simple structure, directly folding the two sides of the composite core towards the middle, which can complete the production of the longitudinally folded composite core 1 online, resulting in high production efficiency. When the adhesive is applied to the upper surface of the composite core by the folding and gluing mechanism 601, it can be applied to the two edges of the composite core, preferably intermittently. In this way, after folding, there is a certain gap between the upper and lower layers of the double-layered longitudinally folded composite core 1, which is connected to the aforementioned guide groove 11, which is more conducive to the rapid diffusion and rapid penetration of the liquid.

[0037] like Figure 1 and 3 As shown, specifically, in order to facilitate the unwinding of the upper layer material 10, the middle layer material 20 and the lower layer material 30, in some embodiments, the unwinding mechanism includes a first unwinding mechanism 101 for unwinding the upper layer material 10, a second unwinding mechanism 102 for unwinding the middle layer material 20 and a third unwinding mechanism 103 for unwinding the lower layer material 30.

[0038] like Figure 1 and 3 As shown, the upper layer material 10 and the lower layer material 30 are typically non-woven fabrics, while the middle layer material 20 is made of a fluffy non-woven fabric. In some embodiments, a heating mechanism 700 is provided on one side of the second unwinding mechanism 102. After the middle layer material 20 is unwound, passing it through the heating mechanism 700 further enhances the fluffiness of the fluffy non-woven fabric, facilitating the entry of the absorbent filler into its gaps 11. The heating mechanism 700 can be an oven.

[0039] like Figure 1 and 3As shown, in some embodiments, a first bonding position 801 and a second bonding position 802 are also included. The intermediate material and the lower layer material 30 are bonded together at the first bonding position 801 to form a lower composite layer, and the upper layer material 10 and the lower composite layer are bonded together at the second bonding position 802 to form a composite layer. Specifically, a first guide roller is provided at the first bonding position 801, and a second guide roller is provided at the second bonding position 802. At the first guide roller, the intermediate layer material 20 and the lower layer material 30 converge and are then bonded together to form the lower composite layer. At the second guide roller, the lower composite layer and the upper layer material 10 converge and are then bonded together to form the composite layer. Specifically, in order to effectively bond and laminate the first bonding position 801 and the second bonding position 802 together, the composite adhesive application mechanism includes a first adhesive application mechanism 201, a second adhesive application mechanism 202, and a third adhesive application mechanism 203. The first adhesive application mechanism 201 is used to apply adhesive to the bottom surface of the unwound upper layer material 10, and its position is set between the second bonding position 802 and the first unwinding mechanism 101. The second adhesive application mechanism 202 is used to apply adhesive to the lower surface of the unwound middle layer material 20, and its position is set between the first bonding position 801 and the second unwinding mechanism 102. The third adhesive application mechanism 203 is used to apply adhesive to the upper surface of the unwound lower layer material 30, and its position is set between the third unwinding mechanism 103 and the first bonding position 801.

[0040] like Figure 1 As shown, in order to facilitate the addition of different liquid-absorbing fillers to the composite core, in some embodiments, the feeding mechanism 300 is set in two sets, and the two sets of feeding mechanisms 300 are arranged between the first bonding position 801 and the second bonding position 802, for applying liquid-absorbing fillers to the intermediate layer material 20 of the lower composite layer. The partition suction and removal mechanism is located between the feeding mechanism 300 and the second bonding position 802.

[0041] The feeding mechanism 300 can be configured into one or more groups according to actual needs. If configured into multiple groups, different materials of liquid-absorbing packing material can be added, or liquid-absorbing packing material can be added at different locations. Figure 3As shown, in some embodiments, the feeding mechanism 300 is preferably configured as two sets, including a first feeding mechanism 301 disposed between the third unwinding mechanism 103 and the first bonding position 801 and a second feeding mechanism 302 disposed between the first bonding position 801 and the second bonding position 802; correspondingly, the partition suction and removal mechanism can also be configured as one or more sets to suction and remove the liquid-absorbing filler applied by the feeding mechanism 300. The partition suction and removal mechanism is configured as two sets, including a first partition suction and removal mechanism located between the first feeding mechanism 301 and the first bonding position 801 and a second partition suction and removal mechanism located between the second feeding mechanism 302 and the second bonding position 802. Between the first bonding position 801 and the second bonding position 802, the intermediate layer material 20 and the lower layer material 30 are bonded together to form a lower composite layer. Two sets of feeding mechanisms 300 apply liquid-absorbing filler to the upper surface of the lower composite layer. Since the intermediate layer material 20 is a fluffy non-woven fabric, under the action of vacuum suction, the liquid-absorbing filler can fall through the gaps in the fluffy non-woven fabric and penetrate into the interior of the fluffy non-woven fabric.

[0042] like Figure 1 and 3As shown, since the intermediate layer material 20 is a loose non-woven fabric, when the partition area 403 removes the absorbent packing material corresponding to the area of ​​the composite core, not only can the absorbent packing material in the area corresponding to the partition area 403 be removed, but the absorbent packing material around this area will also be removed due to the suction force of the partition area 403. To improve the removal effect of the absorbent packing material, in some embodiments, a negative pressure mechanism is also included, which is arranged opposite to the partition removal mechanism. The negative pressure mechanism includes a second negative pressure chamber 901 and an adsorption mold 902. The adsorption mold 902 includes an adsorption area and a non-adsorption area. The adsorption area penetrates the adsorption mold 902 and is connected to the second negative pressure chamber 901. The non-adsorption area corresponds to the partition area 403. In this embodiment, the negative pressure mechanism arranged opposite to the partition removal mechanism can achieve precise removal of the composite core material corresponding to the partition area 403, avoiding the influence on the surrounding areas. Specifically, a non-adsorption zone is set on the negative pressure mechanism corresponding to the isolation zone 403 of the isolation and desorption mechanism, and an adsorption zone is set on the negative pressure mechanism corresponding to other areas of the isolation and desorption mechanism. When the isolation zone 403 of the isolation and desorption mechanism desorbs the liquid-absorbing packing in the corresponding area of ​​the composite core, the non-adsorption zone of the negative pressure mechanism corresponds to this area. Only the isolation zone 403 of the isolation and desorption mechanism generates adsorption force on this area, thereby adsorbing the liquid-absorbing packing into the isolation zone 403. In the composite core area corresponding to other areas of the isolation and desorption mechanism, the adsorption zone of the negative pressure mechanism provides negative pressure suction. The negative pressure suction in this area is opposite to the negative pressure suction in the isolation zone 403, so that the liquid-absorbing packing in this area of ​​the composite core will not be sucked away by the isolation zone 403, effectively avoiding the influence of the suction force of the isolation zone 403 on this area, and ensuring that the shape of the non-liquid-absorbing packing area 12 formed by the composite core is basically consistent with the shape of the isolation zone 403. The specific negative pressure mechanism can also be in the form of an adsorption roller, with a hollow second negative pressure chamber 901 formed in its center, and the adsorption area and non-adsorption area formed on its surface. During rotation, the non-adsorption area corresponds to the isolation area 403.

[0043] like Figure 1 and 3As shown, the liquid-absorbing filler added by the feeding mechanism 300 is usually in granular form. When applied to the surface of the intermediate layer material 20 or the lower layer material 30, it is prone to splashing or scattering. In some embodiments, a vacuum box 303 is provided below the feeding mechanism 300. The vacuum box 303 generates negative pressure suction on the lower surface of the lower layer material 30, thereby adsorbing the applied liquid-absorbing filler and preventing splashing or scattering. At the same time, when the feeding mechanism 300 adds the liquid-absorbing filler to the upper surface of the intermediate layer material 20, the negative pressure generated by the vacuum box 303 can also promote the distribution of the liquid-absorbing filler into the intermediate layer material 20, improving the uniformity of the liquid-absorbing filler in the intermediate layer material 20. Especially after the heating mechanism 700 heats the intermediate layer material 20, the intermediate layer material 20 becomes fluffy. The combination of these two factors further facilitates the distribution of the liquid-absorbing filler within the intermediate layer material 20.

[0044] like Figure 1 and 3 As shown, to prevent the added absorbent filler from leaking through the gap 11 between the upper material 10 and the lower material 30, in some embodiments, a folding mechanism 503 is also provided on the material inlet side of the composite mechanism. The composite mechanism includes a pressing device 502 and a composite device 501 arranged sequentially. Typically, in material size design, the width of the upper material 10 and the lower material 30 is chosen to be greater than the width of the middle material 20 to completely cover the middle material. Before laminating the three layers, the folding mechanism 503 is used to fold the edges of the upper material 10 and the lower material 30, closing the upper material 10 and the lower material 30 at both edges, thus covering the middle material 20 and preventing the absorbent filler from leaking out. Then, the pressing device 502 is used to press the folded core material, reducing the overall thickness and improving breathability and comfort. The unfilled region 12 of the core is then composited using the composite device 501. The composite method can be hot pressing or ultrasonic composite to avoid the filler leaking from both ends when the core is cut into individual core products.

[0045] While the disclosure is as stated above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the scope of protection of this application.

Claims

1. A device for manufacturing a longitudinally folded composite core, characterized in that, Includes an unwinding mechanism for unwinding the upper layer material (10), the middle layer material (20) and the lower layer material (30); A composite adhesive applicator is used to apply adhesive to the surface of an upper layer material (10), an intermediate layer material (20), or a lower layer material (30); A feeding mechanism (300) is used to apply liquid-absorbing filler between the upper material (10) and the lower material (30); The isolation suction and release mechanism includes a first negative pressure chamber (401) and a suction and release mold (402). The suction and release mold (402) includes a partition area (403). The partition area (403) extends through the suction and release mold (402) and communicates with the first negative pressure chamber (401) for suction and release of the applied liquid-absorbing filler. The partition area (403) extends along the width direction of the intermediate layer material (20), and the length of the partition area (403) is not less than the width of the intermediate layer material (20). A composite mechanism is used to combine an upper layer material (10), an intermediate layer material (20) and a lower layer material (30) to form a composite core. The partition suction mechanism is located between the feeding mechanism (300) and the composite mechanism. A folding adhesive application mechanism (601) is used to apply adhesive to the surface of the composite core; The folding mechanism (600) is used to fold the two sides of the composite core towards the middle to form a longitudinally folded composite core (1). After folding, the composite core forms a double-layer structure. The width of the fold from both sides towards the middle is less than the overall width of the longitudinally folded composite core, naturally forming a flow channel. Furthermore, there is no contact between the upper and lower composite cores, and there is a gap between them.

2. The longitudinally folded composite core manufacturing apparatus according to claim 1, characterized in that, The unwinding mechanism includes a first unwinding mechanism (101) for unwinding the upper layer material (10), a second unwinding mechanism (102) for unwinding the middle layer material (20), and a third unwinding mechanism (103) for unwinding the lower layer material (30).

3. The longitudinally folded composite core manufacturing apparatus according to claim 2, characterized in that, A heating mechanism (700) is provided on one side of the second unwinding mechanism (102).

4. The longitudinally folded composite core manufacturing apparatus according to claim 2, characterized in that, It also includes a first bonding position (801) and a second bonding position (802), wherein the intermediate layer material (20) and the lower layer material (30) are bonded at the first bonding position (801) to form a lower composite layer, and the upper layer material (10) and the lower composite layer are bonded at the second bonding position (802) to form a composite layer.

5. The apparatus for fabricating a longitudinally folded composite core according to claim 4, characterized in that, The feeding mechanism (300) is configured in two groups, and the two groups of feeding mechanisms (300) are located between the first bonding position (801) and the second bonding position (802) for applying liquid-absorbing filler to the intermediate layer material (20) of the lower composite layer. The partition suction and removal mechanism is located between the feeding mechanism (300) and the second bonding position (802).

6. The longitudinally folded composite core manufacturing apparatus according to claim 4, characterized in that, The feeding mechanism (300) is configured in two groups, including a first feeding mechanism (301) disposed between the third unwinding mechanism (103) and the first bonding position (801) and a second feeding mechanism (302) disposed between the first bonding position (801) and the second bonding position (802); the partition suction and descrambling mechanism is configured in two groups, including a first partition suction and descrambling mechanism located between the first feeding mechanism (301) and the first bonding position (801) and a second partition suction and descrambling mechanism located between the second feeding mechanism (302) and the second bonding position (802).

7. The apparatus for manufacturing a longitudinally folded composite core according to any one of claims 1 to 6, characterized in that, It also includes a negative pressure mechanism disposed opposite to the partition suction and desorption mechanism. The negative pressure mechanism includes a second negative pressure chamber (901) and an adsorption mold (902). The adsorption mold (902) includes an adsorption zone and a non-adsorption zone. The adsorption zone penetrates the adsorption mold (902) and is connected to the second negative pressure chamber (901). The non-adsorption zone corresponds to the partition zone (403).

8. The apparatus for manufacturing a longitudinally folded composite core according to any one of claims 1 to 6, characterized in that, A vacuum box (303) is provided below the feeding mechanism (300).

9. The apparatus for manufacturing a longitudinally folded composite core according to any one of claims 1 to 6, characterized in that, The composite mechanism is also provided with a folding mechanism (503) on the feeding side. The composite mechanism includes a pressing device (502) and a composite device (501) arranged in sequence.

10. The manufacturing process of the longitudinally folded composite core manufacturing apparatus according to any one of claims 1 to 9, characterized in that, Unwind the upper layer material (10), the middle layer material (20) and the lower layer material (30), apply adhesive to the surface of the upper layer material (10), the middle layer material (20) or the lower layer material (30), apply liquid-absorbing filler between the upper layer material (10) and the lower layer material (30), selectively remove the applied liquid-absorbing filler using a partition suction and removal mechanism, and then combine the upper layer material (10), the middle layer material (20) and the lower layer material (30) to form a composite core; apply adhesive to the surface of the composite core through a folding adhesive application mechanism (601), and finally fold the two sides of the composite core towards the middle through a folding mechanism (503) to form a longitudinally folded composite core (1).

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