Ultrasonic compounding device
By setting main and auxiliary pattern areas on the outer circumference of the bottom roller of the ultrasonic composite device, the problem of ultrasonic welding head pressure fluctuation is solved, achieving a stable heat sealing effect and extending the welding head life, while also improving the visual effect of shorts-style wearable items.
Patent Information
- Application Number
- CN202520441631.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-13
AI Technical Summary
In existing ultrasonic composite devices, when the pattern is arranged in a straight line in the axial direction of the bottom roller, the pressure fluctuates when the ultrasonic welding head contacts the bottom roller, affecting the heat fusion effect and aggravating the wear of the welding head.
Design an ultrasonic composite device, in which a main pattern area and an auxiliary pattern area are set on the outer circumference of the bottom roller. The main pattern is arranged in a straight line along the axial direction, and the density of the auxiliary pattern is higher than that of the main pattern. The auxiliary pattern area supports the ultrasonic welding head to reduce pressure fluctuation.
It improves the uniformity and stability of ultrasonic heat sealing, extends the service life of the welding head, and makes the accordion pleats of shorts-type wearable items appear in a longitudinal straight line, resulting in a better visual effect.
Smart Images
Figure CN223821248U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of disposable hygiene products technology, and particularly to the fields of baby pull-up pants, adult pull-up pants, women's sanitary pants and disposable underwear, and specifically to an ultrasonic composite device. Background Technology
[0002] Disposable hygiene products, particularly short-length garments (baby / adult pull-ups, women's sanitary panties, and disposable underwear), generally have an outer body. This outer body typically comprises an outer layer, an inner layer, and multiple elastic components positioned between the outer and inner layers. During the manufacturing process of these short-length garments, to enhance the softness and aesthetics of the elastic waistband, some areas are welded using a glue-free method (such as ultrasonic bonding). In these areas, the outer and inner layers are ultrasonically bonded along the waistline to form multiple spaced joints, creating a series of accordion-like pleats at the waist. These pleats are also known as accordion pleats.
[0003] like Figure 1 As shown, the existing ultrasonic composite device has an ultrasonic welding head 21 and a bottom roller 30. The surface of the bottom roller 30 has multiple raised floral patterns H. When the ultrasonic welding head 21 contacts the bottom roller 30 with floral patterns H for welding, since the pressure is continuous, it is required that the arrangement of the floral patterns H along the circumference of the bottom roller 30 is also as continuous as possible. At this time, the floral patterns H are in the axial direction of the bottom roller 30 ( Figure 1 The direction perpendicular to the paper surface is often arranged in a curved manner to ensure that the pattern H is continuously arranged along the circumference of the bottom roller 30.
[0004] However, this design results in a curved arrangement of the accordion pleats at the waist of shorts-style garments, which affects their visual appearance. If the accordion pleats of shorts-style garments are desired to be arranged in a vertical straight line, the pattern H needs to be aligned axially with the bottom roller 30. Figure 1 The lines should be arranged in a straight line in the direction perpendicular to the paper.
[0005] If the pattern H is in the axial direction of the bottom roller 30 ( Figure 1 If the patterns H are arranged in a straight line (perpendicular to the paper surface), then there is a discontinuity between adjacent columns of patterns H along the circumference of the bottom roller 30. Since the width W1 of the ultrasonic welding head 21 is usually a fixed value, when the interval size W2 of the pattern H is too large, it is generally considered that when W2≥10mm, the ultrasonic welding head 21 will jump when contacting the bottom roller 30. The ultrasonic welding head 21 will experience pressure fluctuations and pressure jumps, resulting in inconsistent friction between the ultrasonic welding head 21 and the bottom roller 30, which affects the heat fusion welding effect.
[0006] For example, when welding hot air nonwoven fabric, due to the material composition, the area of a single pattern H on the bottom roller 30 is designed to be larger to ensure the welding effect. However, as the area of pattern H increases, the pressure required by the ultrasonic welding head also needs to increase. At this time, the pressure fluctuation of the ultrasonic welding head 21 contacting the bottom roller 30 will also increase further, which will not only affect the heat welding effect, but also accelerate the wear of the ultrasonic welding head 21 and affect its service life. Utility Model Content
[0007] This invention provides an ultrasonic composite device to solve the technical problem that the ultrasonic welding head contacts the bottom roller due to the large pressure fluctuation and pressure jump caused by the straight arrangement of the patterns in the axial direction of the bottom roller and the large distance between adjacent main patterns along the circumference of the bottom roller.
[0008] The technical solution provided by this utility model is as follows:
[0009] One objective of this utility model is to provide an ultrasonic bonding device for ultrasonically welding the outer body of shorts-type wearable items; the ultrasonic bonding device includes an ultrasonic device and a bottom roller; the outer circumferential surface of the bottom roller has a patterned area surrounding the bottom roller along the circumferential direction of the bottom roller.
[0010] Along the axial direction of the bottom roller, the pattern area includes a main pattern area and an auxiliary pattern area located on at least one side of the main pattern area;
[0011] Within the main pattern area, there are multiple main patterns that protrude radially from the bottom roller, and the multiple main patterns are arranged in a straight line in multiple columns along the axial direction of the bottom roller; along the circumferential direction of the bottom roller, the spacing between two adjacent columns of the main patterns is 8mm to 14mm;
[0012] Within the auxiliary pattern area, there are multiple auxiliary patterns that protrude radially from the bottom roller, and the multiple auxiliary patterns are arranged in multiple rows in a straight line along the axial direction of the bottom roller;
[0013] Along the circumferential direction of the bottom roller, the spacing between two adjacent columns of the main patterns is greater than the spacing between two adjacent columns of the auxiliary patterns, and the density of the auxiliary patterns is greater than the density of the main patterns; the ratio of the area of the main pattern region to the area of the auxiliary pattern region is 7:10 to 15:10.
[0014] In a preferred embodiment, the spacing between two adjacent main patterns along the axial direction of the bottom roller is 2mm to 10mm;
[0015] Along the circumferential direction of the bottom roller, the spacing between two adjacent columns of the auxiliary patterns is 1mm to 7mm; along the axial direction of the bottom roller, the spacing between two adjacent auxiliary patterns is 1mm to 10mm.
[0016] In a preferred embodiment, along the radial direction of the bottom roller, the height of the plurality of auxiliary patterns is 0 μm to 50 μm lower than the height of the plurality of main patterns.
[0017] In a preferred embodiment, the outer casing has a main heat-sealing area and an auxiliary heat-sealing area. During ultrasonic welding, the main pattern area corresponds to the main heat-sealing area, and the auxiliary pattern area corresponds to the auxiliary heat-sealing area. The main heat-sealing area has at least two layers of sheet material, and the auxiliary heat-sealing area has at least one layer of sheet material.
[0018] In a preferred embodiment, the auxiliary floral pattern area includes a first auxiliary floral pattern area, which is located outside the main floral pattern area;
[0019] Within the main pattern area, there are multiple main patterns that protrude radially from the bottom roller, and the multiple main patterns are arranged in multiple rows in a straight line along the axial direction of the bottom roller;
[0020] The first auxiliary pattern area has a plurality of first auxiliary patterns that protrude radially from the bottom roller, and the plurality of first auxiliary patterns are arranged in multiple rows in a straight line along the axial direction of the bottom roller.
[0021] In a preferred embodiment, in the first auxiliary pattern area, at least one of the first auxiliary patterns is located between any two columns of main patterns along the extension line of the bottom roller axis.
[0022] In a preferred embodiment, along the axial direction of the bottom roller, the length of the first auxiliary pattern area is 5% to 50% of the length of the main pattern area.
[0023] In a preferred embodiment, the auxiliary flower pattern area includes a first auxiliary flower pattern area and a second auxiliary flower pattern area;
[0024] The first auxiliary floral area is located outside the main floral area; the second auxiliary floral area is located inside the main floral area.
[0025] Within the main pattern area, there are multiple main patterns that protrude radially from the bottom roller, and the multiple main patterns are arranged in multiple rows in a straight line along the axial direction of the bottom roller;
[0026] The first auxiliary pattern area has a plurality of first auxiliary patterns that protrude radially from the bottom roller, and the plurality of first auxiliary patterns are arranged in multiple rows in a straight line along the axial direction of the bottom roller;
[0027] The second auxiliary pattern area has a plurality of second auxiliary patterns that protrude radially from the bottom roller, and the plurality of second auxiliary patterns are arranged in multiple rows in a straight line along the axial direction of the bottom roller.
[0028] In a preferred embodiment, in the first auxiliary pattern area, at least one of the first auxiliary patterns is located between any two columns of main patterns along the extension line of the bottom roller axis;
[0029] In the second auxiliary pattern area, there is at least one second auxiliary pattern between any two columns of main patterns along the extension line of the bottom roller axis.
[0030] In a preferred embodiment, along the axial direction of the bottom roller, the sum of the length of the first auxiliary pattern area and the length of the second auxiliary pattern area is 5% to 50% of the length of the main pattern area.
[0031] In a preferred embodiment, the bottom roller is further connected to a cooling device, which may be an external air conditioner, a temperature control system installed inside the bottom roller, or a heat dissipation and suction channel designed inside the bottom roller.
[0032] The above-described technical solution of this utility model has at least the following beneficial effects compared with the prior art:
[0033] This invention provides an ultrasonic composite device. The outer circumferential surface of the bottom roller has a patterned area surrounding the bottom roller along its circumferential direction. Along the axial direction of the bottom roller, the patterned area includes a main patterned area and auxiliary patterned areas located on at least one side of the main patterned area. Within the main patterned area, multiple main patterns protrude radially from the bottom roller and are arranged in multiple rows in a straight line along the bottom roller's axial direction. Along the circumferential direction of the bottom roller, the spacing between adjacent rows of main patterns is 8mm to 14mm. Within the auxiliary patterned area, multiple auxiliary patterns protrude radially from the bottom roller and are arranged in multiple rows in a straight line along the bottom roller's axial direction. Along the circumferential direction of the bottom roller, the spacing between adjacent rows of main patterns is greater than the spacing between adjacent rows of auxiliary patterns, and the density of the auxiliary patterns is greater than the density of the main patterns. The ratio of the area of the main patterned area to the area of the auxiliary patterned area is 7:10 to 15:10. When the ultrasonic welding head contacts the bottom roller, the auxiliary pattern supports the ultrasonic welding head, preventing fluctuations and jumps in the pressure of the ultrasonic welding head, improving the uniformity and stability of ultrasonic heat sealing, and extending the service life of the ultrasonic welding head.
[0034] This invention provides an ultrasonic composite device that produces accordion pleats on the outer body of shorts-type wearable items that are arranged in a longitudinal straight line, resulting in a good visual effect. Attached Figure Description
[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0036] Figure 1 This is a schematic diagram of the structure of an ultrasonic composite device in the prior art.
[0037] Figure 2 This is a schematic diagram of the unfolded state of the shorts-type wearable item in Embodiment 1 of this utility model, with the first sheet not folded.
[0038] Figure 3 yes Figure 2 Cross-sectional view in the RR direction.
[0039] Figure 4 This is a schematic diagram of the unfolded state of the shorts-type garment in Embodiment 1 of this utility model.
[0040] Figure 5 This is the book Figure 4 Cross-sectional view in the TT direction.
[0041] Figure 6 This is a schematic diagram of a shorts-type garment in Embodiment 1 of this utility model.
[0042] Figure 7 This is a schematic diagram of the ultrasonic composite device in Embodiment 1 of this utility model.
[0043] Figure 8 This is a schematic diagram of the bottom roller in Embodiment 1 of this utility model.
[0044] Figure 9 This is a schematic diagram of the structure of the bottom roller unfolding along the circumferential direction in Embodiment 1 of this utility model.
[0045] Figure 10 yes Figure 9 Enlarged view of region I in the middle.
[0046] Figure 11 yes Figure 9 Enlarged view of region I-I in the middle.
[0047] Figure 12 This is a schematic diagram of the first auxiliary flower pattern in some embodiments of this utility model.
[0048] Figure 13 This is a schematic diagram of how the ultrasonic composite device welds the main heat-sealing area and the first auxiliary heat-sealing area of a shorts-type wearable item in Embodiment 1 of this utility model.
[0049] Figure 14 This is a schematic diagram of the unfolded state of the shorts-type wearable item in Embodiment 2 of this utility model, with the first sheet not folded.
[0050] Figure 15 yes Figure 14 Cross-sectional view in the SS direction.
[0051] Figure 16 This is a cross-sectional view of the shorts-type wearable item in its unfolded state (cross-sectional view of the first sheet after folding) in Embodiment 2 of this utility model.
[0052] Figure 17 This is a schematic diagram of the structure of the bottom roller unfolding along the circumferential direction in Embodiment 2 of this utility model.
[0053] Figure 18 yes Figure 17 Enlarged view of region ⅠⅡⅠ in the middle.
[0054] Figure 19 yes Figure 17 A magnified view of region IV in the middle.
[0055] Figure 20 This is a schematic diagram of how the ultrasonic composite device welds the main heat-sealing area, the first auxiliary heat-sealing area, and the second auxiliary heat-sealing area of a shorts-type wearable item in Embodiment 2 of this utility model. Detailed Implementation
[0056] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0057] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "an," "a," or "the" do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. The terms "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.
[0058] It should be noted that the terms "upper", "lower", "left", "right", "front", and "back" used in this utility model are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.
[0059] Example 1.
[0060] Combination Figures 2 to 6 According to an embodiment of the present invention, the shorts-type garment has mutually orthogonal longitudinal, transverse and thickness directions, wherein the unfolded direction of the shorts-type garment is longitudinal, and in the thickness direction, the surface in contact with the human body is the skin side, and the side away from the human skin is the non-skin side.
[0061] The shorts-type garment has a front waist section B1 positioned longitudinally along the wearer's abdomen, a back section B2 positioned along the wearer's back, and a crotch section B3 positioned between the front waist section B1 and the back section B2. Figure 4 As shown.
[0062] The shorts-type garment has an outer body 40 and an absorbent body 50, the absorbent body 50 being fixed to the inner surface of the outer body 40. In some embodiments, the shorts-type garment may also omit the absorbent body 50 (and may be formed as disposable underwear).
[0063] Combination Figure 3 and Figure 5 The outer body 40 includes at least a first sheet 41, a second sheet 42, a first elastic member 43, and a second elastic member 44. Along the thickness direction, the first sheet 41 is disposed on the non-skin side, and the second sheet 42 is disposed on the skin side. The first sheet 41 and the second sheet 42 are at least located at the front waist B1 and the back B2, such as... Figure 4 As shown. The first sheet 41 is folded towards the skin side of the absorbent body 50 to form a folded portion 411, as shown. Figure 5 As shown.
[0064] like Figure 4 and Figure 5 As shown, in this embodiment, the outer garment 40 has a main heat-sealing area A1, a first auxiliary heat-sealing area A2, and an adhesive area A4 in the front waist portion B1 and the back portion B2. The main heat-sealing area A1 is located in the area of the front waist portion B1 and the back portion B2 near the waist opening (upper waist area), and is located on the non-skin side of the garment relative to the absorbent body 50. The first auxiliary heat-sealing area A2 is located in the area where the folded portion 411 of the first sheet 41 is located, and is located on the skin side of the garment relative to the absorbent body 50. The adhesive area A4 is located below the main heat-sealing area A1 (lower waist area).
[0065] Specifically, the first sheet 41 is folded over towards the skin side of the absorbent body 50 to form a folded portion 411. Simultaneously, the first auxiliary heat-sealing area A2 is folded over along with the first sheet 41 towards the skin side of the absorbent body 50, such that the first auxiliary heat-sealing area A2 is located in the area near the waist opening (upper waist area) of the front waist B1 and the back B2, and the first auxiliary heat-sealing area A2 is located on the surface of the folded portion 411, as shown below. Figure 3 and Figure 5 As shown.
[0066] The first elastic component 43 and the second elastic component 44 of this invention are multiple transversely extending linear spandex filaments. The first elastic component 43 is at least provided in the bonding area A4, where the first elastic component 43 is fixed between the first sheet 41 and the second sheet 42 by a hot melt adhesive (not shown in the figure).
[0067] The second elastic member 44 is at least provided in the first auxiliary heat-sealing area A2, and the second elastic member 44 is fixed to the inner surface of the first sheet 41 by a hot melt adhesive (not shown in the figure), and then folded together with the first sheet 41 toward the skin side of the absorbent body 50, and fixed to the inner surface of the folded portion 411, such as Figure 3 and Figure 5 As shown.
[0068] In some embodiments, along the thickness direction, the outer casing 40 further includes a third sheet (not shown in the figure), the third sheet being disposed at least in the heat-sealing area A1 of the main body, and sandwiched between the first sheet 41 and the second sheet 42. Further, along the thickness direction, the outer casing 40 may include a fourth layer or more layers of sheets.
[0069] Combination Figure 2 and Figure 6As shown, in the main heat-sealed area A1, the first sheet 41 and the second sheet 42 are fused together to form a plurality of spaced first joints 40a. The plurality of first joints 40a form accordion-shaped large bubbles in the main heat-sealed area A1, thereby forming accordion-shaped large bubbles arranged in a longitudinal straight line in the area (upper waist area) near the waist opening in the front waist B1 and the back B2.
[0070] In the first auxiliary heat-sealing zone A2, a plurality of mutually spaced second joints 40b are formed on the surface of the first sheet 41, such as Figure 2 As shown. The first auxiliary heat-sealing area A2 is folded together with the first sheet 41 toward the skin side of the absorbent body 50, so that the first auxiliary heat-sealing area A2 is located on the surface of the folded portion 411, as shown. Figure 3 and Figure 5 As shown.
[0071] like Figure 6 As shown, the side edges of the front waist section B1 and the back section B2 are joined together to form a side closure 60, thereby forming a shorts-type garment with a waist opening and two leg openings.
[0072] In some embodiments, along the thickness direction, the outer body 40 further includes a third sheet (not shown in the figure), the third sheet being at least disposed in the main body heat-sealing area A1, and sandwiched between the first sheet 41 and the second sheet 42. In the main body heat-sealing area A1, the first sheet 41, the second sheet 42 and the third sheet are fused together to form a plurality of first joints 40a, the plurality of first joints 40a causing the main body heat-sealing area A1 to form accordion-shaped large bubbles arranged in a longitudinal straight line.
[0073] Combination Figures 7 to 13 In order to form large accordion-like pleats with longitudinal straight lines in the areas of the front waist B1 and the back B2 near the waist opening (upper waist area), according to an embodiment of the present invention, an ultrasonic composite device is provided.
[0074] like Figure 7 As shown, an ultrasonic composite device 10 includes a mounting plate 100, an ultrasonic device 20, and a bottom roller 30.
[0075] The ultrasonic device 20 and the bottom roller 30 are mounted on the mounting plate 100. The ultrasonic device 20 includes an ultrasonic welding head 21, which imparts vibration energy and performs ultrasonic vibration in the direction of the bottom roller 30, and the ultrasonic welding head 21 can be adjusted along the axial direction of the bottom roller 30.
[0076] Combination Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12The bottom roller 30 is disposed on the side corresponding to the ultrasonic welding head 21. The outer circumferential surface of the bottom roller 30 has a patterned area D and a non-patterned area F that surround the bottom roller 30 along the circumferential direction.
[0077] In this embodiment, to ensure that the outer casing 40 has a main heat-sealing area A1 at both the front waist B1 and the rear back B2, there are two patterned areas D. Along the axial direction of the bottom roller 30, the two patterned areas D are located on the outer side of the bottom roller 30, and the non-patterned area F is located on the inner side of the bottom roller 30. The ultrasonic welding head 21 is directly opposite the patterned area D, as shown below. Figure 8 As shown.
[0078] like Figure 8 As shown, along the axial direction of the bottom roller 30, the width of the ultrasonic welding head 21 is N', and the width of the patterned area D is N. The width N' of the ultrasonic welding head 21 can be greater than the width N of the patterned area D, equal to the width N of the patterned area D, or less than the width N of the patterned area D. The ultrasonic welding head 21 can be adjusted along the axial direction of the bottom roller 30 so that the ultrasonic welding head 21 is directly facing the patterned area D.
[0079] Combination Figure 9 , Figure 10 and Figure 11 According to an embodiment of the present invention, along the axial direction of the bottom roller 30, the pattern area D includes a main pattern area D1 and an auxiliary pattern area located on at least one side of the main pattern area D1.
[0080] Within the main pattern area D1, there are multiple main patterns 31 that protrude radially from the bottom roller 30. These main patterns 31 are arranged in multiple rows in a straight line along the axial direction of the bottom roller 30. In some embodiments, the straight arrangement of the multiple rows of main patterns 31 can be a horizontal straight line parallel to the axial direction of the bottom roller 30, or it can be an oblique straight line arrangement, with the obliquely arranged multiple rows of main patterns 31 forming an angle with the axial direction of the bottom roller 30. Along the circumferential direction of the bottom roller 30, the spacing between two adjacent rows of main patterns 31 is 8mm to 14mm.
[0081] Within the auxiliary pattern area, there are multiple auxiliary patterns that protrude radially from the bottom roller 30. These multiple auxiliary patterns are arranged in multiple rows in a straight line along the axial direction of the bottom roller 30. In addition to horizontal straight lines parallel to the axial direction of the bottom roller 30, the straight line arrangement of the multiple auxiliary patterns can also be an oblique straight line arrangement forming an angle with the axial direction of the bottom roller 30.
[0082] Along the circumferential direction of the bottom roller 30, the spacing between two adjacent columns of main patterns 31 is greater than the spacing between two adjacent columns of auxiliary patterns, and the density of multiple auxiliary patterns is greater than the density of multiple main patterns 31. The ratio of the area of the main pattern area D1 to the area of the auxiliary pattern area is 7:10 to 15:10.
[0083] Along the axial direction of the bottom roller 30, the spacing between two adjacent main patterns 31 is 2mm to 10mm. Along the circumferential direction of the bottom roller 30, the spacing between two adjacent rows of auxiliary patterns is 1mm to 7mm; along the axial direction of the bottom roller 30, the spacing between two adjacent auxiliary patterns is 1mm to 10mm. Along the radial direction of the bottom roller 30, the height of multiple auxiliary patterns is 0μm to 50μm lower than the height of multiple main patterns 31.
[0084] Specifically, in this embodiment, the auxiliary flower pattern area includes a first auxiliary flower pattern area D2, which is located outside the main flower pattern area D1, as shown below. Figure 9 , 10 and Figure 11 As shown.
[0085] Combination Figure 10 and Figure 11 Within the main pattern area D1, there are multiple main patterns 31 that protrude radially from the bottom roller 30. These multiple main patterns 31 are arranged in a straight line along the axial direction of the bottom roller 30. In some embodiments, the straight line arrangement of the multiple rows of main patterns 31 can be a horizontal straight line parallel to the axial direction of the bottom roller 30, or it can be an oblique straight line arrangement, with the obliquely arranged multiple rows of main patterns 31 forming an angle with the axial direction of the bottom roller 30.
[0086] The first auxiliary pattern area D2 has a plurality of first auxiliary patterns 32 that protrude radially from the bottom roller 30. The plurality of first auxiliary patterns 32 are arranged in multiple rows in a straight line along the axial direction of the bottom roller 30. In addition to horizontal straight lines parallel to the axial direction of the bottom roller 30, the linear arrangement of the plurality of first auxiliary patterns 32 can also be a diagonal straight line that forms an angle with the axial direction of the bottom roller 30.
[0087] Along the circumferential direction of the bottom roller 30, the distance L1 between two adjacent columns of main patterns 31 is greater than the distance L3 between two adjacent columns of first auxiliary patterns 32, and the density of multiple first auxiliary patterns 32 is greater than the density of multiple main patterns 31.
[0088] In the first auxiliary pattern area D2, there is at least one first auxiliary pattern 32 between any two columns of main patterns 21 along the axial extension of the bottom roller 30.
[0089] Furthermore, along the circumferential direction of the bottom roller 30, the spacing L1 between two adjacent main patterns 31 is 8mm to 14mm; along the axial direction of the bottom roller, the spacing L2 between two adjacent main patterns 31 is 2mm to 10mm.
[0090] Along the circumferential direction of the bottom roller 30, the spacing L3 between two adjacent rows of first auxiliary patterns 32 is 1mm to 7mm; along the axial direction of the bottom roller 30, the spacing L4 between two adjacent first auxiliary patterns 32 is 1mm to 10mm.
[0091] According to an embodiment of this utility model, along the radial direction of the bottom roller 30, the height of the plurality of first auxiliary patterns 32 is 0μm to 50μm lower than the height of the plurality of main patterns 31. Along the axial direction of the bottom roller 30, the length N2 of the first auxiliary pattern area D2 is 5% to 50% of the length N1 of the main pattern area D1.
[0092] Since the ratio of the area S1 of the main pattern area D1 to the area of the auxiliary pattern area is closer to 100%, the effect of suppressing the pressure fluctuation of the ultrasonic welding head 21 contacting the bottom roller 30 is more obvious. In this embodiment, the ratio of the area S1 of the main pattern area D1 to the area S2 of the first auxiliary pattern area D2 is 7:10 to 15:10.
[0093] In this embodiment, the main flower shape 31 and the first auxiliary flower shape 32 are elongated. For example... Figure 12 As shown, in some embodiments, the first auxiliary flower shape 32 can also be a diagonal stripe.
[0094] In other embodiments, the first auxiliary flower shape 32 may also be other shapes, such as an elongated oval shape, a circle, or other regular or irregular shapes. The main flower shape 31 and the first auxiliary flower shape 32 may have the same shape or different shapes.
[0095] The working process of an ultrasonic composite device 10 in this embodiment will be described below.
[0096] Combination Figure 13 The present invention provides an ultrasonic composite device 10 for ultrasonic welding of the outer body 40 of shorts-type wearable items.
[0097] The outer casing 40 has a main heat-sealing area A1 and an auxiliary heat-sealing area (in this embodiment, the first auxiliary heat-sealing area A2). During ultrasonic welding, the main pattern area D1 corresponds to the main heat-sealing area A1, and the auxiliary pattern area (in this embodiment, the first auxiliary pattern area D2) corresponds to the auxiliary heat-sealing area (in this embodiment, the first auxiliary heat-sealing area A2). The main heat-sealing area A1 has at least two layers of sheet material, and the auxiliary heat-sealing area (in this embodiment, the first auxiliary heat-sealing area A2) has at least one layer of sheet material.
[0098] Specifically, in this embodiment, the longitudinal direction of the shorts-type garment in its unfolded state corresponds to the axial direction of the bottom roller 30. With the first sheet 41 folded, the shorts-type garment is conveyed in its unfolded state between the ultrasonic welding head 21 and the bottom roller 30.
[0099] The first sheet 41, the second sheet 42, the first elastic component 43, and the second elastic component 44 are continuously inserted between the ultrasonic welding head 21 and the bottom roller 30 under a certain tension. The first elastic component 43 is sandwiched between the first sheet 41 and the second sheet 42, and the second elastic component 44 is located on the inner surface of the first sheet 41.
[0100] During ultrasonic bonding, the first sheet 41 and the second sheet 42 are stacked between the ultrasonic welding head 21 and the bottom roller 30. The first sheet 41 is attached to the surface of the bottom roller 30, and the second sheet 42 is located on the side away from the bottom roller 30. At this time, the two ends of the first sheet 41 along the axial direction are in an extended state and have not yet been folded.
[0101] like Figure 13 As shown, during ultrasonic welding, the main pattern area D1 corresponds to the main heat-sealing area A1. The ultrasonic welding head 21 heat-seales the first sheet 41 and the second sheet 42. In the main heat-sealing area A1, the first sheet 41 and the second sheet 42 are welded together on multiple main patterns 31 to form multiple spaced first joints 40a. The multiple first joints 40a make the main heat-sealing area A1 form accordion-shaped large bubbles, thereby forming accordion-shaped large bubbles arranged in a longitudinal straight line in the area near the waist opening (upper waist area) of the front waist B1 and the back B2.
[0102] In this invention, the ultrasonic welding head 21 heats seals two layers of sheet material in the main heat-sealing area A1, which can form accordion-like pleated bubbles in the main heat-sealing area A1 of the outer casing 40 and meet a certain heat-sealing bonding strength.
[0103] In some embodiments, a third sheet (not shown) is further disposed between the first sheet 41 and the second sheet 42. In the main heat-sealing area A1, the ultrasonic welding head 21 heat-seales the three sheets, that is, the ultrasonic welding head 21 heat-seales the first sheet 41, the second sheet 42 and the third sheet. In the main heat-sealing area A1, the first sheet 41, the second sheet 42 and the third sheet are fused together on multiple main patterns 31 to form multiple first joints 40a. The multiple first joints 40a make the main heat-sealing area A1 form accordion-shaped large bubbles arranged in a longitudinal straight line.
[0104] like Figure 13 As shown, during ultrasonic welding, the first auxiliary pattern area D2 corresponds to the first auxiliary heat sealing area A2. The ultrasonic welding head 21 heat seals at least the first sheet 41. In the first auxiliary heat sealing area A2, the surface of the first sheet 41 is welded on multiple first auxiliary patterns 32 to form multiple mutually spaced second joints 40b.
[0105] Next, the first sheet 41 is folded towards the skin side of the absorbent body 50 to form a folded portion 411. Simultaneously, the first auxiliary heat-sealing area A2 is folded together with the first sheet 41 towards the skin side of the absorbent body 50, so that the first auxiliary heat-sealing area A2 is located on the surface of the folded portion 411. Figure 5 As shown.
[0106] like Figure 13As shown, during ultrasonic welding, the non-floral area F corresponds to the adhesive area A4. Ultrasonic welding is not performed in the adhesive area A4. The first elastic component 43 is fixed between the first sheet 41 and the second sheet 42 by hot melt adhesive (not shown in the figure).
[0107] Within the main pattern area D1 of this invention, there are multiple main patterns 31 protruding radially from the bottom roller 30, arranged in multiple rows in a straight line along the axial direction of the bottom roller 30. When the distance between two adjacent rows of main patterns 31 is between 8mm and 14mm along the circumferential direction of the bottom roller 30, the first auxiliary pattern 32 provides support for the ultrasonic welding head 21, thereby preventing pressure fluctuations and jumps in the ultrasonic welding head 31, improving the uniformity and stability of ultrasonic heat sealing, and extending the service life of the ultrasonic welding head 21.
[0108] It should be noted that the ultrasonic welding head 21 can be adjusted along the axial direction of the bottom roller 30 so that the ultrasonic welding head 21 is directly facing the pattern area D, and at least partially facing the first auxiliary pattern area D2 along the axial direction of the bottom roller 30, so that the first auxiliary pattern 32 can support the ultrasonic welding head 21.
[0109] In some embodiments, since the ultrasonic welding head 21 generates heat through heat sealing with the bottom roller 30, in order to stabilize the temperature of the outer periphery of the bottom roller 30 and reduce pressure fluctuations, the bottom roller 30 is also connected to a cooling device (not shown in the figure). The cooling device is an external air conditioner, or a temperature control system is installed inside the bottom roller 30, or a heat dissipation and suction channel is designed inside the bottom roller 30.
[0110] Example 2.
[0111] The difference between this embodiment and Embodiment 1 is that the auxiliary flower pattern area includes a first auxiliary flower pattern area D1 and a second auxiliary flower pattern area D2.
[0112] Combination Figure 14 , Figure 15 and Figure 16 The outer body 40 has a main heat-sealing area A1, a first auxiliary heat-sealing area A2, a second auxiliary heat-sealing area A3, and an adhesive area A4 in the front waist region B1 and the back region B2. The main heat-sealing area A1 is located in the area of the front waist region B1 and the back region B2 near the waist opening (upper waist area). The first auxiliary heat-sealing area A2 is located in the area of the folded portion 411 of the first sheet 41. The second auxiliary heat-sealing area A3 and the adhesive area A4 are located below the main heat-sealing area A1 (lower waist area).
[0113] Specifically, the first sheet 41 is folded over towards the skin side of the absorbent body 50 to form a folded portion 411. Simultaneously, the first auxiliary heat-sealing area A2 is folded over along with the first sheet 41 towards the skin side of the absorbent body 50, such that the first auxiliary heat-sealing area A2 is located in the area near the waist opening (upper waist area) of the front waist B1 and the back B2, and the first auxiliary heat-sealing area A2 is located on the surface of the folded portion 411, as shown below. Figure 15 and Figure 16 As shown.
[0114] Combination Figure 14 , Figures 15 to 16 The first elastic component 43 and the second elastic component 44 are multiple transversely extending linear spandex filaments. The first elastic component 43 is provided at least in the second auxiliary heat-sealing area A3 and the adhesive area A4. In the adhesive area A4, the first elastic component 43 is fixed between the first sheet 41 and the second sheet 42 by a hot melt adhesive (not shown in the figure).
[0115] The second elastic member 44 is at least provided in the first auxiliary heat-sealing area A2, and the second elastic member 44 is fixed to the inner surface of the first sheet 41 by a hot melt adhesive (not shown in the figure), and then folded together with the first sheet 41 toward the skin side of the absorbent body 50, and fixed to the inner surface of the folded portion 411, such as Figure 15 and Figure 16 As shown.
[0116] like Figure 14 As shown, in the main heat-sealed area A1, the first sheet 41 and the second sheet 42 are fused together to form a plurality of spaced first joints 40a. The plurality of first joints 40a form accordion-shaped large bubbles in the main heat-sealed area A1, thereby forming accordion-shaped large bubbles arranged in a longitudinal straight line in the area (upper waist area) near the waist opening in the front waist B1 and the back B2.
[0117] In the first auxiliary heat-sealing zone A2, a plurality of mutually spaced second joints 40b are formed on the surface of the first sheet 41, such as Figure 14 As shown. The first auxiliary heat-sealing area A2 is folded together with the first sheet 41 toward the skin side of the absorbent body 50, so that the first auxiliary heat-sealing area A2 is located on the surface of the folded portion 411, as shown. Figure 15 and Figure 16 As shown.
[0118] In the second auxiliary heat-sealing zone A3, the first sheet 41 and the second sheet 42 are fused together to form a plurality of spaced-apart third joints 40c, such as... Figure 14 As shown.
[0119] In order to form large accordion-like pleats with longitudinal straight lines in the areas of the front waist B1 and the back B2 near the waist opening (upper waist area), according to an embodiment of the present invention, an ultrasonic composite device is provided.
[0120] like Figure 17 As shown, in this embodiment, the outer circumferential surface of the bottom roller 30 of an ultrasonic composite device 10 has a patterned area D and a non-patterned area F that surround the bottom roller 30 along the circumferential direction.
[0121] In this embodiment, in order to ensure that the outer body 40 has a main heat-sealing area A1 at both the front waist B1 and the rear back B2, there are two patterned areas D. Along the axial direction of the bottom roller 30, the two patterned areas D are located on the outer side of the bottom roller 30, and the non-patterned area F is located on the inner side of the bottom roller 30.
[0122] According to an embodiment of the present invention, along the axial direction of the bottom roller 30, the pattern area D includes a main pattern area D1 and an auxiliary pattern area located on at least one side of the main pattern area D1.
[0123] Within the main pattern area D1, there are multiple main patterns 31 protruding radially from the bottom roller 30. These main patterns 31 are arranged in multiple rows in a straight line along the axial direction of the bottom roller 30. The spacing between adjacent rows of main patterns 31 along the circumference of the bottom roller 30 is 8mm to 14mm. Within the auxiliary pattern area, there are multiple auxiliary patterns protruding radially from the bottom roller 30. These auxiliary patterns are arranged in multiple rows in a straight line along the axial direction of the bottom roller 30. The spacing between adjacent rows of main patterns 31 along the circumference of the bottom roller 30 is greater than the spacing between adjacent rows of auxiliary patterns, and the density of the auxiliary patterns is greater than the density of the main patterns 31. The ratio of the area of the main pattern area D1 to the area of the auxiliary pattern area is 7:10 to 15:10.
[0124] Along the axial direction of the bottom roller 30, the spacing between two adjacent main patterns 31 is 2mm to 10mm. Along the circumferential direction of the bottom roller 30, the spacing between two adjacent rows of auxiliary patterns is 1mm to 7mm; along the axial direction of the bottom roller 30, the spacing between two adjacent auxiliary patterns is 1mm to 10mm. Along the radial direction of the bottom roller 30, the height of multiple auxiliary patterns is 0μm to 50μm lower than the height of multiple main patterns 31.
[0125] Specifically, in combination Figure 17 , Figure 18 and Figure 19 In this embodiment, the auxiliary flower pattern area includes a first auxiliary flower pattern area D2 and a second auxiliary flower pattern area D3.
[0126] The first auxiliary floral area D2 is located outside the main floral area D1; the second auxiliary floral area D3 is located inside the main floral area D1.
[0127] Within the main pattern area D1, there are multiple main patterns 31 that protrude radially from the bottom roller 30. The multiple main patterns 31 are arranged in a straight line along the axial direction of the bottom roller 30. In some embodiments, the straight line arrangement of the multiple rows of main patterns 31 is not only a horizontal straight line parallel to the axial direction of the bottom roller 30, but also an oblique straight line arrangement. The multiple rows of main patterns 31 arranged in an oblique straight line form an angle with the axial direction of the bottom roller 30.
[0128] The first auxiliary pattern area D2 has a plurality of first auxiliary patterns 32 that protrude radially from the bottom roller 30, and the plurality of first auxiliary patterns 32 are arranged in multiple rows in a straight line along the axial direction of the bottom roller 30. Similarly, in addition to horizontal straight lines parallel to the axial direction of the bottom roller 30, the linear arrangement of the plurality of first auxiliary patterns 32 can also be a diagonal straight line forming an angle with the axial direction of the bottom roller 30.
[0129] The second auxiliary pattern area D3 has multiple second auxiliary patterns 33 that protrude radially from the bottom roller 30. The multiple second auxiliary patterns 33 are arranged in multiple rows in a straight line along the axial direction of the bottom roller 30. Similarly, in addition to horizontal straight lines parallel to the axial direction of the bottom roller 30, the multiple second auxiliary patterns 33 can also be arranged in a diagonal straight line forming an angle with the axial direction of the bottom roller 30.
[0130] Along the circumferential direction of the bottom roller 30, the spacing between two adjacent columns of main patterns 31 is greater than the spacing between two adjacent columns of first auxiliary patterns 32, and the density of multiple first auxiliary patterns 32 is greater than the density of multiple main patterns 31.
[0131] Along the circumferential direction of the bottom roller 30, the spacing between two adjacent columns of main patterns 31 is greater than the spacing between two adjacent columns of second auxiliary patterns 33, and the density of multiple second auxiliary patterns 33 is greater than the density of multiple main patterns 31.
[0132] In the first auxiliary pattern area D2, there is at least one first auxiliary pattern 32 between any two columns of main patterns 31 along the axial extension of the bottom roller 30. In the second auxiliary pattern area D3, there is at least one second auxiliary pattern 33 between any two columns of main patterns 31 along the axial extension of the bottom roller 30.
[0133] Furthermore, along the circumferential direction of the bottom roller 30, the spacing between two adjacent main patterns 31 is 8mm to 14mm; along the axial direction of the bottom roller 30, the spacing between two adjacent main patterns is 2mm to 10mm.
[0134] Along the circumferential direction of the bottom roller 30, the spacing between two adjacent rows of first auxiliary patterns 32 is 1mm to 7mm; along the axial direction of the bottom roller 30, the spacing between two adjacent first auxiliary patterns 32 is 1mm to 10mm. Along the circumferential direction of the bottom roller 30, the spacing between two adjacent rows of second auxiliary patterns 33 is 1mm to 7mm; along the axial direction of the bottom roller 30, the spacing between two adjacent second auxiliary patterns 33 is 1mm to 10mm.
[0135] Along the radial direction of the bottom roller 30, the height of the plurality of first auxiliary patterns 32 is 0μm to 50μm lower than the height of the plurality of main patterns 31;
[0136] Along the radial direction of the bottom roller 30, the height of the multiple second auxiliary patterns 33 is 0μm to 50μm lower than the height of the multiple main patterns 31.
[0137] Along the axial direction of the bottom roller 30, the sum of the length N2 of the first auxiliary pattern area D2 and the length N3 of the second auxiliary pattern area D3 is 5% to 50% of the length N1 of the main pattern area D1.
[0138] Since the ratio of the area S1 of the main pattern region D1 to the area of the auxiliary pattern region is closer to 100%, the effect of suppressing pressure fluctuations when the ultrasonic welding head 21 contacts the bottom roller 30 is more significant. In this embodiment, the ratio of the area S1 of the main pattern region D1 to the sum of the areas S2 of the first auxiliary pattern region D2 and S3 of the second auxiliary pattern region D3 is 7:10 to 15:10. That is, S1:(S2+S3)=7:10~15:10.
[0139] In this embodiment, the main flower shape 31, the first auxiliary flower shape 32, and the second auxiliary flower shape 33 are elongated. In some embodiments, the first auxiliary flower shape 32 and the second auxiliary flower shape 33 may also be other shapes, such as oblique stripes, elongated ovals, circles, or other regular or irregular shapes. The main flower shape 31 may have the same shape as the first auxiliary flower shape 32 and the second auxiliary flower shape 33, or they may be different.
[0140] The working process of an ultrasonic composite device 10 in this embodiment will be described below.
[0141] Combination Figure 20 The present invention provides an ultrasonic composite device 10 for ultrasonic welding of the outer body 40 of shorts-type wearable items.
[0142] The outer casing 40 has a main heat-sealing area A1 and auxiliary heat-sealing areas (in this embodiment, a first auxiliary heat-sealing area A2 and a second auxiliary heat-sealing area A3). During ultrasonic welding, the main pattern area D1 corresponds to the main heat-sealing area A1, and the auxiliary pattern areas (in this embodiment, a first auxiliary pattern area D2 and a second auxiliary pattern area D3) correspond to the auxiliary heat-sealing areas (in this embodiment, a first auxiliary heat-sealing area A2 and a second auxiliary heat-sealing area A3). The main heat-sealing area A1 has at least two layers of sheet material, and the auxiliary heat-sealing areas (in this embodiment, a first auxiliary heat-sealing area A2 and a second auxiliary heat-sealing area A3) have at least a single layer of sheet material.
[0143] Specifically, in this embodiment, the longitudinal direction of the shorts-type garment in its unfolded state corresponds to the axial direction of the bottom roller 30. With the first sheet 41 folded, the shorts-type garment is conveyed in its unfolded state between the ultrasonic welding head 21 and the bottom roller 30.
[0144] The first sheet 41, the second sheet 42, the first elastic component 43, and the second elastic component 44 are continuously inserted between the ultrasonic welding head 21 and the bottom roller 30 under a certain tension. The first elastic component 43 is sandwiched between the first sheet 41 and the second sheet 42, and the second elastic component 44 is located on the inner surface of the first sheet 41.
[0145] During ultrasonic bonding, the first sheet 41 and the second sheet 42 are stacked between the ultrasonic welding head 21 and the bottom roller 30. The first sheet 41 is attached to the surface of the bottom roller 30, and the second sheet 42 is located on the side away from the bottom roller 30. At this time, the two ends of the first sheet 41 along the axial direction are in an extended state and have not yet been folded.
[0146] like Figure 20 As shown, during ultrasonic welding, the main pattern area D1 corresponds to the main heat-sealing area A1. The ultrasonic welding head 21 heat-seales the first sheet 41 and the second sheet 42. In the main heat-sealing area A1, the first sheet 41 and the second sheet 42 are welded together on multiple main patterns 31 to form multiple spaced first joints 40a. The multiple first joints 40a make the main heat-sealing area A1 form accordion-shaped large bubbles, thereby forming accordion-shaped large bubbles arranged in a longitudinal straight line in the area near the waist opening (upper waist area) of the front waist B1 and the back B2.
[0147] In this invention, the ultrasonic welding head 21 heats seals two layers of sheet material in the main heat-sealing area A1, which can form accordion-like pleated bubbles in the main heat-sealing area A1 of the outer casing 40 and meet a certain heat-sealing bonding strength.
[0148] In some embodiments, a third sheet (not shown) is further disposed between the first sheet 41 and the second sheet 42. In the main heat-sealing area A1, the ultrasonic welding head 21 heat-seales the three sheets, that is, the ultrasonic welding head 21 heat-seales the first sheet 41, the second sheet 42 and the third sheet. In the main heat-sealing area A1, the first sheet 41, the second sheet 42 and the third sheet are fused together on multiple main patterns 31 to form multiple first joints 40a. The multiple first joints 40a make the main heat-sealing area A1 form accordion-shaped large bubbles arranged in a longitudinal straight line.
[0149] like Figure 20As shown, during ultrasonic welding, the first auxiliary pattern area D2 corresponds to the first auxiliary heat sealing area A2. The ultrasonic welding head 21 heat seals at least the first sheet 41. In the first auxiliary heat sealing area A2, the surface of the first sheet 41 is welded on multiple first auxiliary patterns 32 to form multiple mutually spaced second joints 40b.
[0150] Next, the first sheet 41 is folded towards the skin side of the absorbent body 50 to form a folded portion 411. Simultaneously, the first auxiliary heat-sealing area A2 is folded together with the first sheet 41 towards the skin side of the absorbent body 50, so that the first auxiliary heat-sealing area A2 is located on the surface of the folded portion 411. Figure 16 As shown.
[0151] like Figure 20 As shown, during ultrasonic welding, the second auxiliary pattern area D3 corresponds to the second auxiliary heat sealing area A3. The ultrasonic welding head 21 heat seals the first sheet 41 and the second sheet 42. In the second auxiliary heat sealing area A3, the first sheet 41 and the second sheet 42 are welded together on multiple second auxiliary patterns 33 to form multiple mutually spaced third joints 40c.
[0152] like Figure 20 As shown, during ultrasonic welding, the non-floral area F corresponds to the adhesive area A4. Ultrasonic welding is not performed in the adhesive area A4. The first elastic component 43 is fixed between the first sheet 41 and the second sheet 42 by hot melt adhesive (not shown in the figure).
[0153] The other structures in this embodiment are the same as those in Embodiment 1, and will not be described again here.
[0154] Example 3.
[0155] The difference between this embodiment and embodiment two is that the auxiliary flower pattern area only includes the second auxiliary flower pattern area D3, while the other structures are the same as in embodiment two, and will not be described again here.
[0156] The following points need to be explained:
[0157] (1) The accompanying drawings of this utility model embodiment only involve the structure involved in this utility model embodiment. Other structures can refer to the general design.
[0158] (2) For clarity, the thickness of layers or regions is enlarged or reduced in the drawings used to describe embodiments of the present invention, i.e., these drawings are not drawn to actual scale. It is understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "below" another element, the element may be "directly" located "on" or "below" the other element or there may be intermediate elements.
[0159] (3) Where there is no conflict, the embodiments of this utility model and the features in the embodiments can be combined with each other to obtain new embodiments.
[0160] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. The protection scope of this utility model shall be determined by the protection scope of the claims.
Claims
1. An ultrasonic composite device, characterized in that, For ultrasonic welding of the outer body of shorts-type wearable items; the ultrasonic composite device includes an ultrasonic device and a bottom roller; the outer circumferential surface of the bottom roller has a patterned area surrounding the bottom roller along the circumferential direction of the bottom roller; Along the axial direction of the bottom roller, the pattern area includes a main pattern area and an auxiliary pattern area located on at least one side of the main pattern area; Within the main pattern area, there are multiple main patterns that protrude radially from the bottom roller, and the multiple main patterns are arranged in a straight line in multiple columns along the axial direction of the bottom roller; along the circumferential direction of the bottom roller, the spacing between two adjacent columns of the main patterns is 8mm to 14mm; Within the auxiliary pattern area, there are multiple auxiliary patterns that protrude radially from the bottom roller, and the multiple auxiliary patterns are arranged in multiple rows in a straight line along the axial direction of the bottom roller; Along the circumferential direction of the bottom roller, the spacing between two adjacent columns of the main patterns is greater than the spacing between two adjacent columns of the auxiliary patterns, and the density of the auxiliary patterns is greater than the density of the main patterns; the ratio of the area of the main pattern region to the area of the auxiliary pattern region is 7:10 to 15:
10.
2. The ultrasonic composite device according to claim 1, characterized in that, Along the axial direction of the bottom roller, the distance between two adjacent main patterns is 2mm to 10mm; Along the circumferential direction of the bottom roller, the spacing between two adjacent columns of the auxiliary patterns is 1mm to 7mm; along the axial direction of the bottom roller, the spacing between two adjacent auxiliary patterns is 1mm to 10mm.
3. The ultrasonic composite device according to claim 2, characterized in that, Along the radial direction of the bottom roller, the height of the plurality of auxiliary patterns is 0 μm to 50 μm lower than the height of the plurality of main patterns.
4. The ultrasonic composite device according to claim 1, characterized in that, The outer casing has a main heat-sealing area and an auxiliary heat-sealing area. During ultrasonic welding, the main pattern area corresponds to the main heat-sealing area, and the auxiliary pattern area corresponds to the auxiliary heat-sealing area. The main heat-sealing area has at least two layers of sheet material, and the auxiliary heat-sealing area has at least one layer of sheet material.
5. The ultrasonic composite device according to claim 1, characterized in that, The auxiliary floral pattern area includes a first auxiliary floral pattern area, which is located outside the main floral pattern area; Within the main pattern area, there are multiple main patterns that protrude radially from the bottom roller, and the multiple main patterns are arranged in multiple rows in a straight line along the axial direction of the bottom roller; The first auxiliary pattern area has a plurality of first auxiliary patterns that protrude radially from the bottom roller, and the plurality of first auxiliary patterns are arranged in multiple rows in a straight line along the axial direction of the bottom roller.
6. The ultrasonic composite device according to claim 5, characterized in that, In the first auxiliary pattern area, at least one of the first auxiliary patterns is located between any two columns of main patterns along the extension line of the bottom roller axis.
7. The ultrasonic composite device according to claim 5, characterized in that, Along the axial direction of the bottom roller, the length of the first auxiliary pattern area is 5% to 50% of the length of the main pattern area.
8. The ultrasonic composite device according to claim 1, characterized in that, The auxiliary flower pattern area includes a first auxiliary flower pattern area and a second auxiliary flower pattern area; The first auxiliary floral area is located outside the main floral area; the second auxiliary floral area is located inside the main floral area. Within the main pattern area, there are multiple main patterns that protrude radially from the bottom roller, and the multiple main patterns are arranged in multiple rows in a straight line along the axial direction of the bottom roller; The first auxiliary pattern area has a plurality of first auxiliary patterns that protrude radially from the bottom roller, and the plurality of first auxiliary patterns are arranged in multiple rows in a straight line along the axial direction of the bottom roller; The second auxiliary pattern area has a plurality of second auxiliary patterns that protrude radially from the bottom roller, and the plurality of second auxiliary patterns are arranged in multiple rows in a straight line along the axial direction of the bottom roller.
9. The ultrasonic composite device according to claim 8, characterized in that, In the first auxiliary pattern area, there is at least one column of the first auxiliary pattern between any two columns of main patterns along the extension line of the bottom roller axis; In the second auxiliary pattern area, there is at least one second auxiliary pattern between any two columns of main patterns along the extension line of the bottom roller axis.
10. The ultrasonic composite device according to claim 8, characterized in that, Along the axial direction of the bottom roller, the sum of the length of the first auxiliary pattern area and the length of the second auxiliary pattern area is 5% to 50% of the length of the main pattern area.
11. The ultrasonic composite device according to claim 1, characterized in that, The bottom roller is also connected to a cooling device, which may be an external air conditioner, a temperature control system installed inside the bottom roller, or a heat dissipation and suction channel designed inside the bottom roller.