Longitudinal folding composite core manufacturing device and process thereof

Abstract

The invention belongs to the technical field of hygienic products, and relates to a longitudinally-folded composite core manufacturing device which comprises an unwinding mechanism. The composite sizing mechanism is used for applying an adhesive to the surface of the upper-layer material, the middle-layer material or the lower-layer material; the feeding mechanism is used for applying liquid absorption filler; the partition sucking and removing mechanism comprises a first negative pressure bin and a sucking and removing mold, the sucking and removing mold comprises a partition area, and the partition area penetrates through the sucking and removing mold, communicates with the first negative pressure bin and is used for sucking and removing the applied liquid sucking filler; the compounding mechanism is used for compounding the upper-layer material, the middle-layer material and the lower-layer material to form a composite core body; the wrapping and folding sizing mechanism is used for applying an adhesive to the surface of the composite core body; and the wrapping and folding mechanism is used for folding the two sides of the composite core body towards the middle to form a longitudinally-folded composite core body. The longitudinal folding composite core can be manufactured on line, the composite core is folded to form a double-layer structure, and a diversion trench is naturally formed in the middle, so that the liquid absorption characteristic is improved, and the diffusion speed is increased.

Description

Technical Field

[0001] The invention belongs to the technical field of sanitary products, and in particular relates to a longitudinally folded composite core manufacturing device and a process thereof. Background Art

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

[0003] In order to solve the technical problem of the complicated structure of the manufacturing device of the guide channel of sanitary products in the prior art, the present invention provides a longitudinal folding composite core manufacturing device and a process thereof.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is: a longitudinal fold composite core manufacturing device, including an unwinding mechanism for unwinding the upper layer material, the middle layer material and the lower layer material;

[0005] A composite glue applying mechanism, used for applying adhesive to the surface of the upper layer material, the middle layer material or the lower layer material;

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

[0007] A partition suction and stripping mechanism, comprising a first negative pressure chamber and a suction stripping mold, wherein the suction stripping mold comprises a partition area, wherein the partition area passes through the suction stripping mold and is connected to the first negative pressure chamber, and is used to perform suction and stripping of the applied liquid-absorbing filler, wherein the partition area extends along the width direction of the intermediate layer material, and the length of the partition area is not less than the width of the intermediate layer material;

[0008] A composite mechanism is used to composite the upper layer material, the middle layer material and the lower layer material to form a composite core, and the partition suction and removal mechanism is located between the feeding mechanism and the composite mechanism;

[0009] A wrapping and gluing mechanism, used for applying adhesive to the surface of the composite core;

[0010] The folding mechanism is used to fold the two sides of the composite core toward the middle to form a longitudinally folded composite core.

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

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

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

[0014] In some embodiments, the feeding mechanism is set into 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 middle layer material of the lower composite layer. The partition suction and removal mechanism is located between the feeding mechanism and the second bonding position.

[0015] In some embodiments, the feeding mechanism is provided in two groups, including a first feeding mechanism arranged between the third unwinding mechanism and the first bonding position and a second feeding mechanism arranged between the first bonding position and the second bonding position; the partition suction and removal mechanism is provided in two groups, including a first partition suction and removal mechanism located between the first feeding mechanism and the first bonding position and a second partition suction and removal mechanism located between the second feeding mechanism and the second bonding position.

[0016] In some embodiments, it also includes a negative pressure mechanism arranged opposite to the partition suction and removal mechanism, the negative pressure mechanism includes a second negative pressure bin and an adsorption mold, the adsorption mold includes an adsorption area and a non-adsorption area, the adsorption area passes through the adsorption mold and is connected to the second negative pressure bin, and the non-adsorption area corresponds to the partition area.

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

[0018] In some embodiments, a folding mechanism is also provided on the feeding side of the composite mechanism, and the composite mechanism includes a pressure point device and a composite device which are arranged in sequence.

[0019] The present invention also provides a manufacturing process of the above-mentioned longitudinally folded composite core manufacturing device, which comprises unwinding the upper layer material, the middle layer material and the lower layer material, applying adhesive to the surface of the upper layer material, the middle layer material or the lower layer material, applying liquid absorbent filler between the upper layer material and the lower layer material, selectively absorbing and removing the applied liquid absorbent filler by means of a partitioning absorption and removal mechanism, and then compounding the upper layer material, the middle layer material and the lower layer material to form a composite core; applying adhesive to the surface of the composite core by means of a wrapping and folding glue application mechanism, and finally folding the two sides of the composite core toward the middle by means of a folding mechanism to form a longitudinally folded composite core.

[0020] Beneficial effects: The device of the present invention has a simple structure. The two sides of the composite core are directly folded toward the middle, and the longitudinal folded composite core can be made online. The composite core forms a double-layer structure after folding. The width of the two sides folded toward the middle is smaller than the width of the entire longitudinal folded composite core. No additional guide groove is required. The guide groove is formed naturally, which is beneficial to improving the liquid absorption characteristics and diffusion speed. There is a gap between the composite cores on both sides of the upper and lower layers without contact, which is beneficial to improving the diffusion speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of a device for making a longitudinally folded composite core according to the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the partition suction and removal mechanism;

[0023] Figure 3 A schematic diagram of the structure of the device is provided for another embodiment;

[0024] Figure 4 It is a schematic diagram of the cross section of the longitudinally folded composite core;

[0025] Figure 5 It is a schematic diagram of the longitudinally folded composite core structure;

[0026] In the figure, 1. longitudinally folded composite core, 11. gap, 12. area without liquid-absorbing filler, 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. film removal, 403. partition area, 501. composite device, 502. pressure point device, 503. folding mechanism, 600. folding mechanism, 601. folding gluing mechanism, 700. heating mechanism, 801. first bonding position, 802. second bonding position, 901. second negative pressure bin, 902. adsorption mold. DETAILED DESCRIPTION

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

[0028] like Figures 1 to 3 As shown, a longitudinal fold composite core manufacturing device includes an unwinding mechanism for unwinding an upper layer material 10, an intermediate layer material 20 and a lower layer material 30;

[0029] A composite glue applying mechanism, used for applying adhesive to the surface of the upper layer material 10, the middle layer material 20 or the lower layer material 30;

[0030] A feeding mechanism 300 for applying a liquid-absorbing filler between the upper material 10 and the lower material 30;

[0031] A partition suction and stripping mechanism, comprising a first negative pressure chamber 401 and a suction stripping mold 402, wherein the suction stripping mold 402 comprises a partition area 403, wherein the partition area 403 penetrates the suction stripping mold 402 and is connected to the first negative pressure chamber 401, and is used for suction and stripping the applied liquid-absorbing filler, wherein 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] The composite mechanism is used to composite the upper layer material 10, the middle layer material 20 and the lower layer material 30 to form a composite core, and the partition suction and removal mechanism is located between the feeding mechanism 300 and the composite mechanism;

[0033] The wrapping 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 toward the middle to form a longitudinally folded composite core 1.

[0035] In the present invention, after the feeding mechanism 300 applies the liquid-absorbing filler between the upper material 10 and the lower material 30, before the composite mechanism performs composite forming of the composite core, the partitioning suction and removal mechanism can absorb the liquid-absorbing filler at the corresponding position of the partitioning area 403, such as Figure 5 As shown, after the composite structure is composited to form a composite core, the composite core has a region 12 without liquid-absorbing filler corresponding to the partition area 403, and a partition is naturally formed. When it is divided into a single core unit, the liquid-absorbing filler will not be exposed at the incision, avoiding the problem of leakage of the liquid-absorbing filler. At the same time, the region 12 without liquid-absorbing filler has no liquid-absorbing filler, which is also convenient for the subsequent composite structure to composite the region 12, such as hot pressing composite or ultrasonic composite, and then seal the position to avoid leakage of the liquid-absorbing filler when the core is subsequently cut into monomers. The absorption and removal principle of the partition absorption and removal mechanism is that the first negative pressure chamber 401 forms a negative pressure in the partition area 403 of the absorption demolding 402. When the partition area 403 absorbs liquid filler, the liquid-absorbing filler in the corresponding area can be sucked out, so that the liquid-absorbing filler in the area becomes less or even disappears. Specifically, the suction demoulding 402 can be set in the form of a circular roller, and a first negative pressure chamber 401 is formed inside the roller. The surface of the roller is the suction demoulding 402, and a plurality of partition areas 403 can be arranged on the suction demoulding 402 at intervals.

[0036] After the composite mechanism, a wrapping and gluing mechanism 601 and a wrapping and gluing mechanism 600 are added. After the composite core is formed, the wrapping and gluing mechanism 601 is used to apply adhesive to the surface of the composite core, and then the wrapping and gluing mechanism 600 is used to fold the two sides of the composite core toward the middle, and a certain gap 11 is left in the middle. After the two sides are folded, they are pasted on the main structure of the composite core to form a double-layer structure. The gap 11 is a naturally formed guide groove, that is, a longitudinally folded composite core 1 is formed, and its structure is as shown in FIG. Figure 4 As shown. The present invention has a simple structure, directly folds the two sides of the composite core toward the middle, and can complete the production of the longitudinally folded composite core 1 online, with high production efficiency. When the folding and gluing mechanism 601 applies adhesive to the upper surface of the composite core, it can be applied to the edges of both sides of the composite core, preferably intermittently, so that there is a certain gap between the upper and lower layers of the longitudinally folded composite core 1 with a double-layer structure after folding, and it is connected to the above-mentioned guide groove 11, which is more conducive to the rapid diffusion and 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 usually non-woven fabric materials, and the middle layer material 20 is selected from fluffy non-woven fabric materials. 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, the middle layer material 20 passes through the heating mechanism 700, which can make the fluffy non-woven fabric of the middle layer material 20 more fluffy, making it easier for the liquid-absorbing filler to enter the gap 11. The heating mechanism 700 can be an oven.

[0039] like Figure 1 and 3As shown, in some embodiments, it also includes a first laminating position 801 and a second laminating position 802. The intermediate material and the lower layer material 30 are laminated at the first laminating position 801 to form a lower composite layer, and the upper layer material 10 and the lower composite layer are laminated at the second laminating position 802 to form a composite layer. Specifically, a first guide roller is provided at the first laminating position 801, and a second guide roller is provided at the second laminating position 802. The intermediate layer material 20 and the lower layer material 30 meet at the first guide roller, and then are pasted and composited together to form a lower composite layer. At the second guide roller, the lower composite layer meets the upper layer material 10, and then are pasted and composited together to form a composite layer. Specifically, in order to enable the corresponding layers at the first bonding position 801 and the second bonding position 802 to be effectively pasted and composited together, the composite gluing mechanism includes a first gluing mechanism 201, a second gluing mechanism 202 and a third gluing mechanism 203. The first gluing mechanism 201 is used to apply adhesive to the bottom surface of the unrolled upper layer material 10, and its position is set between the second bonding position 802 and the first unwinding mechanism 101. The second gluing mechanism 202 is used to apply adhesive to the lower surface of the unrolled intermediate layer material 20, and its position is set between the first bonding position 801 and the second unwinding mechanism 102. The third gluing mechanism 203 is used to apply adhesive to the upper surface of the unrolled 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 into two groups, and the two groups of the feeding mechanism 300 are arranged between the first fitting position 801 and the second fitting position 802, and are used to apply liquid-absorbing fillers to the middle layer material 20 of the lower composite layer, and the partition suction and removal mechanism is located between the feeding mechanism 300 and the second fitting position 802.

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

[0042] like Figure 1 and 3As shown, since the middle layer material 20 is a fluffy non-woven fabric material, when the partition area 403 absorbs and removes the liquid-absorbing filler in the corresponding area of ​​the composite core, not only the liquid-absorbing filler in the area corresponding to the partition area 403 can be absorbed and removed, but the liquid-absorbing filler around the area will also be affected by the suction of the partition area 403 and be absorbed and removed. In order to improve the absorption and removal effect of the liquid-absorbing filler, in some embodiments, a negative pressure mechanism arranged opposite to the partition absorption and removal mechanism is also included, and the negative pressure mechanism includes a second negative pressure chamber 901 and an adsorption mold 902, and the adsorption mold 902 includes an adsorption area and a non-adsorption area, and the adsorption area passes through the adsorption mold 902 and is connected to the second negative pressure chamber 901, and the non-adsorption area corresponds to the partition area 403. In this embodiment, the negative pressure mechanism arranged opposite to the partition absorption and removal mechanism can achieve accurate absorption and removal of the area of ​​the composite core corresponding to the partition area 403, avoiding the influence on the surrounding area. Specifically, a non-adsorption area is set on the negative pressure mechanism corresponding to the partition area 403 of the partition suction and removal mechanism, and an adsorption area is set on the negative pressure mechanism corresponding to other areas of the partition suction and removal mechanism; when the partition area 403 of the partition suction and removal mechanism absorbs and removes liquid filler from the corresponding area of ​​the composite core, and the non-adsorption area corresponding to the negative pressure mechanism corresponds to this area, only the partition area 403 of the partition suction and removal mechanism generates adsorption force on this area, and then the liquid absorbent filler is adsorbed to the partition area 403; and in the composite core area corresponding to other areas of the partition suction and removal mechanism, the adsorption area of ​​the negative pressure mechanism provides negative pressure suction, and the negative pressure suction of this area is opposite to the negative pressure suction of the partition area 403, so that the liquid absorbent filler in this area of ​​the composite core will not be sucked away by the partition area 403, effectively avoiding the area from being affected by the suction of the partition area 403, and ensuring that the shape of the liquid absorbent filler-free area 12 formed by the composite core is basically consistent with the shape of the partition area 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 the center, and the adsorption area and non-adsorption area formed on the surface. During the rotation process, the non-adsorption area corresponds to the partition area 403.

[0043] like Figure 1 and 3As shown, the liquid-absorbing filler added by the feeding mechanism 300 is usually in the form of granules, which are prone to splashing or scattering when applied to the surface of the middle layer material 20 or the surface of the lower layer material 30. In some embodiments, a vacuum box 303 is provided below the feeding mechanism 300. The vacuum box 303 is provided to generate negative pressure suction on the lower surface of the lower layer material 30, thereby adsorbing the applied liquid-absorbing filler to avoid splashing or scattering. At the same time, if the feeding mechanism 300 adds the liquid-absorbing filler to the upper surface of the middle layer material 20, the negative pressure generated by the vacuum box 303 can also promote the liquid-absorbing filler to be distributed inside the middle layer material 20, thereby improving the uniformity of the liquid-absorbing filler in the middle layer material 20, especially after the heating mechanism 700 heats the middle layer material 20, the middle layer material 20 is fluffy. The combination of the two is more conducive to the distribution of the liquid-absorbing filler inside the middle layer material 20.

[0044] like Figure 1 and 3 As shown, in order to prevent the added liquid-absorbing filler from leaking from 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 feeding side of the composite mechanism, and the composite mechanism includes a pressure point device 502 and a composite device 501 which are arranged in sequence. Usually, when designing the material size, a scheme in which the width of the upper material 10 and the lower material 30 is greater than the width of the middle material 20 is selected to completely cover the middle material. Before the three-layer material is composited, the edges of the upper material 10 and the lower material 30 are folded by the folding mechanism 503, so that the upper material 10 and the lower material 30 are sealed at the edge positions on both sides, and the middle material 20 is covered to prevent the liquid-absorbing filler from leaking. Then, the pressure point device 502 is used to press the core material after folding to reduce the overall thickness and improve the air permeability and comfort. The non-filler region 12 of the core is then compounded using the compounding device 501. The compounding method may be hot pressing compounding or ultrasonic compounding to prevent the filler from leaking from both ends when the core is cut into individual core products.

[0045] Although the disclosure is disclosed as above, the protection scope of the disclosure is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of this application.

Claims

1. A longitudinal folding composite core manufacturing device, characterized in that: It comprises an unwinding mechanism for unwinding an upper layer material (10), an intermediate layer material (20) and a lower layer material (30); A composite glue applying mechanism, used for applying adhesive to the surface of the upper layer material (10), the middle layer material (20) or the lower layer material (30); A feeding mechanism (300) for applying a liquid-absorbing filler between the upper layer material (10) and the lower layer material (30); A partition suction and stripping mechanism, comprising a first negative pressure chamber (401) and a suction stripping mold (402), wherein the suction stripping mold (402) comprises a partition area (403), wherein the partition area (403) passes through the suction stripping mold (402) and is connected to the first negative pressure chamber (401), and is used for suction and stripping the applied liquid absorbent filler, wherein 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, used for composite the upper layer material (10), the middle layer material (20) and the lower layer material (30) to form a composite core, wherein the partition suction and removal mechanism is located between the feeding mechanism (300) and the composite mechanism; A wrapping and gluing 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 toward the middle to form a longitudinally folded composite core (1).

2. The longitudinal folding composite core manufacturing device according to claim 1, characterized in that: The unwinding mechanism comprises a first unwinding mechanism (101) for unwinding an upper layer material (10), a second unwinding mechanism (102) for unwinding an intermediate layer material (20), and a third unwinding mechanism (103) for unwinding a lower layer material (30).

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

4. The longitudinal folding composite core manufacturing device according to claim 2, characterized in that: It also includes a first bonding position (801) and a second bonding position (802), wherein the intermediate material 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 longitudinal folding composite core manufacturing device according to claim 4, characterized in that: The feeding mechanism (300) is provided in two groups, and the two groups of the feeding mechanism (300) are arranged between the first bonding position (801) and the second bonding position (802), and are used to apply liquid-absorbing filler to the middle layer material (20) of the lower composite layer, and the partition suction and removal mechanism is located between the feeding mechanism (300) and the second bonding position (802).

6. The longitudinal folding composite core manufacturing device according to claim 4, characterized in that: The feeding mechanism (300) is provided in two groups, including a first feeding mechanism (301) arranged between the third unwinding mechanism (103) and the first bonding position (801) and a second feeding mechanism (302) arranged between the first bonding position (801) and the second bonding position (802); the partition suction and removal mechanism is provided in two groups, 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).

7. The longitudinal folding composite core manufacturing device according to any one of claims 1 to 6, characterized in that: It also includes a negative pressure mechanism arranged opposite to the partition suction and removal mechanism, the negative pressure mechanism includes a second negative pressure bin (901) and an adsorption mold (902), the adsorption mold (902) includes an adsorption area and a non-adsorption area, the adsorption area passes through the adsorption mold (902) and is connected to the second negative pressure bin (901), and the non-adsorption area corresponds to the partition area (403).

8. The longitudinal folding composite core manufacturing device according to any one of claims 1 to 6, characterized in that: A vacuum box (303) is arranged below the feeding mechanism (300).

9. The longitudinal folding composite core manufacturing device according to any one of claims 1 to 6, characterized in that: A folding mechanism (503) is also provided on the feeding side of the composite mechanism, and the composite mechanism comprises a pressure point device (502) and a composite device (501) which are arranged in sequence.

10. The manufacturing process of the longitudinal folding composite core manufacturing device according to any one of claims 1 to 9, characterized in that: The upper layer material (10), the middle layer material (20) and the lower layer material (30) are unwound, adhesive is applied to the surface of the upper layer material (10), the middle layer material (20) or the lower layer material (30), a liquid absorbent filler is applied between the upper layer material (10) and the lower layer material (30), the applied liquid absorbent filler is selectively absorbed and removed by a partition absorption and removal mechanism, and then the upper layer material (10), the middle layer material (20) and the lower layer material (30) are composited to form a composite core body; adhesive is applied to the surface of the composite core body by a wrapping and gluing mechanism (601), and finally the two sides of the composite core body are folded toward the middle by a folding mechanism (503) to form a longitudinally folded composite core body (1).

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