Fabric and knurling texture structure and knurling device thereof

Abstract

The embossing texture structure of the fabric comprises at least one layer of hot air cloth and at least one layer of spunbond cloth, the hot air cloth and the spunbond cloth are welded and compounded through ultrasonic embossing, embossing textures are formed at the bonding position of the hot air cloth and the spunbond cloth, and the embossing textures are formed by transversely arranging a plurality of unit textures at equal intervals. According to the utility model, through the shape design of the embossed textures, the distribution of bonding areas formed by the hot air cloth and the spunbond cloth through ultrasonic embossing welding is optimized, the welding strength of the fabric is enhanced, the textures are regular in shape, and the effect is attractive.

Description

Technical Field

[0001] The utility model relates to the technical field of fabric embossing, in particular to a fabric and an embossing texture structure thereof and an embossing device. Background Art

[0002] In the production process of fabrics such as diapers, pull-up pants, menstrual pants, and disposable underwear, ultrasonic embossing welding is usually used for edge sealing. It has the advantages of high efficiency, firmness, and aesthetics. The embossed texture left on the fabric after welding is the place where the fabric is bonded. Therefore, the shape of the embossed texture is an important factor affecting the welding strength. Common embossed textures include straight lines and fishbone shapes. The fabrics used for the above-mentioned fabrics include hot air cloth, spunbond cloth, etc. Among them, hot air cloth and spunbond cloth have different melting points, and the welding strength of the two is limited. When the welding fabrics are low-weight hot air cloth and spunbond cloth and the welding width is small, the use of common embossed textures with simpler shapes will result in too low welding strength, making the fabric quality substandard. Utility Model Content

[0003] In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a fabric embossed texture structure, which can be applied to ultrasonic embossing welding of hot air fabric and spunbond fabric to enhance welding strength.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model to solve its technical problems is that the fabric embossed texture structure includes at least one layer of hot air cloth and at least one layer of spunbond cloth. The hot air cloth and the spunbond cloth are composited by ultrasonic embossing welding, and an embossed texture is formed at the bonding point of the two. The embossed texture is composed of a number of unit patterns arranged horizontally at equal intervals. The unit pattern is an axially symmetrical figure in the shape of Ω, which is divided into the first section, the second section, the third section, the fourth section, the fifth section, the sixth section, the seventh section, the eighth section and the ninth section in sequence. The symmetry axis of the unit pattern passes through the midpoint of the fifth section. The first section, the third section, the fifth section, the seventh section and the ninth section are all arcs or straight lines. The second section, the fourth section, the sixth section and the eighth section are all arcs. The second section, the third section and the fourth section are connected in sequence to form an S shape, and the sixth section, the seventh section and the eighth section are connected in sequence to form an inverted S shape.

[0005] In some embodiments, the hot air cloth weight is less than 20g / m 2 , spunbond fabric weight is 13~17g / m 2 .

[0006] In some embodiments, the width of each unit pattern is uniform and ranges from 0.3 to 0.8 mm.

[0007] In some embodiments, the total longitudinal length of the unit pattern is 1.5 to 3.5 mm.

[0008] In some embodiments, the distance between two adjacent unit patterns is 2.5 to 3.5 mm.

[0009] In some embodiments, a gap is left between two adjacent unit patterns, and the gap width is 0.3-0.7 mm.

[0010] In some embodiments, the first segment, the fifth segment, and the ninth segment are all straight lines and parallel to each other.

[0011] In some embodiments, the first segment, the third segment, the fifth segment, the seventh segment and the ninth segment are all arcs, and the unit pattern is a whole smooth curve.

[0012] In some embodiments, a pattern formed by a single unit pattern is rotationally symmetrical to a pattern formed between two adjacent unit patterns.

[0013] The utility model also provides a fabric, which comprises the above-mentioned fabric embossed texture structure.

[0014] The utility model also provides an embossing device for manufacturing the above-mentioned fabric embossed texture structure, comprising an ultrasonic welding head and an embossing wheel, wherein the embossing wheel is circumferentially uniformly provided with a plurality of raised unit patterns.

[0015] Due to the application of the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0016] The utility model optimizes the distribution of bonding areas formed by ultrasonic embossing welding of hot air cloth and spunbond cloth through the shape design of the embossed texture, thereby enhancing the welding strength of the fabric, and the texture shape is regular and the effect is beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of embodiment 1 of the fabric proposed by the present invention.

[0018] Figure 2 for Figure 1 Enlarged schematic diagram of part A in the middle.

[0019] Figure 3 This is a structural schematic diagram of the fabric embossed texture structure in Example 1 of the fabric proposed by the present invention.

[0020] Figure 4 This is a schematic diagram of a plurality of unit patterns on the fabric embossed texture structure in the first, second, third and fourth embodiments of the fabric proposed by the present invention, arranged at equal intervals in the horizontal direction.

[0021] Figure 5 This is a structural schematic diagram of embodiment 1 of the embossing device proposed in the utility model.

[0022] In the figure: 1-hot air cloth; 2-spunbond cloth; 3-embossed texture; 4-unit pattern; 5-first section; 6-second section; 7-third section; 8-fourth section; 9-fifth section; 10-sixth section; 11-seventh section; 12-eighth section; 13-ninth section; 14-gap; 15-ultrasonic welding head; 16-embossing wheel. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0024] Combine Figures 1 to 3 The first embodiment of the fabric proposed by the present invention is a menstrual pants, which belongs to the type of disposable sanitary products. The edges of both sides are made of a double-layer fabric with a hot air cloth 1 as the outer layer and a spunbond cloth 2 as the inner layer, which is folded into a front piece and a back piece, and then ultrasonically embossed and welded and cut to form a side seal, that is, a fabric embossed texture structure. The structure includes four layers of fabric, which are, from front to back, a hot air cloth 1 layer, a spunbond cloth 2 layer, a spunbond cloth 2 layer and a hot air cloth 1 layer. The two layers of hot air cloth 1 and the two layers of spunbond cloth 2 are composited by ultrasonic embossing welding, and an embossed texture 3 is formed on the bonding part. Figure 4 As shown in B1, the embossed texture 3 is composed of a number of unit patterns 4 arranged at equal intervals in the horizontal direction. The unit pattern 4 is an axially symmetrical figure in the shape of Ω, which is divided into the first segment 5, the second segment 6, the third segment 7, the fourth segment 8, the fifth segment 9, the sixth segment 10, the seventh segment 11, the eighth segment 12 and the ninth segment 13 in sequence. The symmetry axis of the unit pattern 4 passes through the midpoint of the fifth segment 9. The first segment 5 and the ninth segment 13, the second segment 6 and the eighth segment 12, the third segment 7 and the seventh segment 11, the fourth segment 8 and the sixth segment 10 are axially symmetrical in pairs. The first segment 5, the third segment 7, the fifth segment 9, the seventh segment 11 and the ninth segment 13 are all straight lines. The second segment 6. The fourth segment 8, the sixth segment 10 and the eighth segment 12 are all arcs. The second segment 6, the third segment 7 and the fourth segment 8 are connected in sequence to form an S shape. The sixth segment 10, the seventh segment 11 and the eighth segment 12 are connected in sequence to form an inverted S shape. The first segment 5, the fifth segment 9 and the ninth segment 13 are parallel to each other. The maximum width between the fourth segment 8 and the sixth segment 10 is greater than the minimum width between the second segment 6 and the eighth segment 12. The maximum width between the second segment 6 and the eighth segment 12 that are located in different unit patterns 4 but adjacent is greater than the minimum width between the fourth segment 8 and the sixth segment 10 that are located in different unit patterns 4 but adjacent. A gap 14 is left between two adjacent unit patterns 4.

[0025] like Figure 4 As shown in B2, the first section 5, the third section 7, the fifth section 9, the seventh section 11 and the ninth section 13 of the unit pattern 4 of the embodiment 2 of the fabric proposed by the present invention are all arcs, and the unit pattern 4 is a whole smooth curve. There is a gap 14 between two adjacent unit patterns 4. The first and second embodiments are the same menstrual pants, both of which use a gram weight of 17g / m 2The hot air cloth 1 and the weight is 15g / m 2 The spunbond fabric 2 has a side seal welding width of 5 mm, a width of each unit pattern 4 of 0.6 mm, a total longitudinal length of the unit pattern 4 of 2.2 mm, a spacing between two adjacent unit patterns 4 of 2.9 mm, and a width of the gap 14 of 0.5 mm. Samples were cut and sampled at the upper, middle, and lower positions of the side seals of Example 1 and Example 2, respectively. Five samples of 2.5 mm in length were taken from each position of each product. The samples were sequentially fed into a pulling machine tester, which clamped the front and rear pieces of the sample and pulled them apart at a uniform speed. The breaking force value of the sample was recorded (the breaking force value is the welding strength). The test results are shown in the following table:

[0026]

[0027] Table 1: Sample breaking force test record

[0028] The product quality standard for menstrual pants and other disposable sanitary products requires that the side seals have a welding strength of no less than 8N when welded by ultrasonic embossing. As shown in Table 1, the welding strengths at the top, middle, and bottom positions of the side seals of Example 1 and Example 2 are all consistently greater than 8N.

[0029] The applicant of the present invention has found that in the process of ultrasonic embossing welding of the side seal of trouser-type disposable sanitary products, the welding conditions are that the welding fabric has a gram weight of less than 20g / m 2 The hot air cloth 1 and the gram weight are 13~17g / m 2 When the welding width of spunbond fabric 2 is not greater than 5mm, the common embossed texture with simpler shapes such as straight line and fishbone shape is used, and the side seal welding strength cannot reach 8N, resulting in substandard product quality. The fabric embossed texture structure proposed in the utility model optimizes the distribution of the bonding area formed by ultrasonic embossing welding of hot air cloth and spunbond fabric through the shape design of embossed texture 3. When applied to the above welding conditions, it can make the side seal welding strength stable and meet the standards, and is also suitable for welding conditions where the welding fabric weight is less than 20g / m 2 The hot air cloth 1 and the gram weight are 13~17g / m 2 The invention can be applied to the welding conditions of spunbond fabric 2 and welding width greater than 5 mm, and can also be extended to other fabrics including hot air fabric 1 and spunbond fabric 2 for edge sealing using ultrasonic embossing welding process.

[0030] like Figure 4As shown in B3 and B4, the embossed textures 3 of the third and fourth embodiments of the fabric proposed by the present invention correspond one-to-one to the embossed textures 3 of the first and second embodiments, respectively, and are similar in shape. The difference is that in the third and fourth embodiments, two adjacent unit patterns 4 are directly connected without leaving a gap 14. The patterns formed by the single unit patterns 4 in the four embodiments are rotationally symmetrical with the pattern formed between the two adjacent unit patterns 4 (the pattern does not include the gap 14), making the embossed texture 3 more regular and beautiful.

[0031] like Figure 5 As shown, the first embodiment of the embossing device proposed by the present invention includes an ultrasonic welding head 15 and an embossing wheel 16. The embossing wheel 16 has a plurality of raised unit patterns 4 evenly distributed circumferentially for producing a fabric embossed texture structure with the same unit patterns 4 on the fabric.

[0032] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. Fabric embossed texture structure, characterized in that, The invention comprises at least one layer of hot air cloth (1) and at least one layer of spunbond cloth (2), wherein the hot air cloth (1) and the spunbond cloth (2) are composited by ultrasonic embossing welding, and an embossed texture (3) is formed at the bonding point between the two. The embossed texture (3) is formed by a plurality of unit patterns (4) arranged at equal intervals in the horizontal direction, and the unit pattern (4) is an axially symmetrical figure in the shape of Ω, which is sequentially divided into a first section (5), a second section (6), a third section (7), a fourth section (8), a fifth section (9), a sixth section (10), a seventh section (11), an eighth section (12) and a ninth section (13), wherein the The symmetry axis of the unit pattern (4) passes through the midpoint of the fifth segment (9); the first segment (5), the third segment (7), the fifth segment (9), the seventh segment (11) and the ninth segment (13) are all arcs or straight lines; the second segment (6), the fourth segment (8), the sixth segment (10) and the eighth segment (12) are all arcs; the second segment (6), the third segment (7) and the fourth segment (8) are connected in sequence to form an S shape; the sixth segment (10), the seventh segment (11) and the eighth segment (12) are connected in sequence to form an inverted S shape.

2. The fabric embossed texture structure according to claim 1, characterized in that: The hot air cloth (1) has a gram weight of less than 20 g / m 2 The spunbond fabric (2) has a gram weight of 13 to 17 g / m 2 .

3. The fabric embossed texture structure according to claim 1, characterized in that: The width of each unit pattern (4) is uniform and ranges from 0.3 to 0.8 mm.

4. The fabric embossed texture structure according to claim 1, characterized in that: The total longitudinal length of the unit pattern (4) is 1.5 to 3.5 mm.

5. The fabric embossed texture structure according to claim 1, characterized in that: The distance between two adjacent unit patterns (4) is 2.5 to 3.5 mm.

6. The fabric embossed texture structure according to claim 1, characterized in that: A gap (14) is left between two adjacent unit patterns (4), and the width of the gap (14) is 0.3 to 0.7 mm.

7. The fabric embossed texture structure according to claim 1, characterized in that: The first section (5), the fifth section (9) and the ninth section (13) are all straight lines and parallel to each other.

8. The fabric embossed texture structure according to claim 1, characterized in that: The first section (5), the third section (7), the fifth section (9), the seventh section (11) and the ninth section (13) are all arcs, and the unit pattern (4) is a whole smooth curve.

9. The fabric embossed texture structure according to claim 1, characterized in that: The pattern formed by a single unit pattern (4) is rotationally symmetrical with the pattern formed between two adjacent unit patterns (4).

10. A fabric, characterized in that The invention comprises the fabric embossed texture structure according to any one of claims 1 to 9.

11. Embossing device, characterized in that, Used for manufacturing a fabric embossed texture structure according to any one of claims 1 to 9, comprising an ultrasonic welding head (15) and an embossing wheel (16), wherein the embossing wheel (16) is uniformly distributed with a plurality of raised unit patterns (4) in the circumferential direction.

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