CN113737508A - Method and structure for cutting spandex filaments in non-woven fabric interlayer - Google Patents
Method and structure for cutting spandex filaments in non-woven fabric interlayer Download PDFInfo
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- CN113737508A CN113737508A CN202111003647.6A CN202111003647A CN113737508A CN 113737508 A CN113737508 A CN 113737508A CN 202111003647 A CN202111003647 A CN 202111003647A CN 113737508 A CN113737508 A CN 113737508A
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- cutting
- spandex
- ultrasonic vibration
- disposable sanitary
- sanitary product
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
- D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
- D06H7/22—Severing by heat or by chemical agents
- D06H7/221—Severing by heat or by chemical agents by heat
- D06H7/223—Severing by heat or by chemical agents by heat using ultrasonic vibration
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- Textile Engineering (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
The invention discloses a method and a structure for cutting spandex filaments in a non-woven fabric interlayer. The vibration frequency of the ultrasonic vibration device is 20 KHZ-35 KHZ; the amplitude is 0.03-0.10 mm. The method can not damage the non-woven fabric on the surface of the disposable sanitary product, has high cutting efficiency, and can effectively improve the quality of the product. Can be widely applied to the cutting field of spandex filaments in non-woven fabric interlayers of disposable sanitary products.
Description
Technical Field
The invention relates to the technical field of production and processing of disposable sanitary products, in particular to a method for cutting spandex filaments in a non-woven fabric interlayer in a disposable sanitary product.
Background
In the processing process of the disposable sanitary product, in order to ensure that a part of the area has stretching elasticity, elastic spandex yarns are arranged in the non-woven fabric interlayer of the area. In order to meet the design and use requirements, the spandex filament needs to be cut off, and the bullet eliminating treatment of the designated area is completed. The existing method adopts a mechanical hot-pressing cutting mode, and a disposable sanitary product is extruded by an upper heating press roll and a lower heating press roll, so that the disposable sanitary product is cut under the double action of heating and extruding. In the mode, the pressure acts on the surface of the non-woven fabric of the disposable sanitary product to extrude the non-woven fabric, so that the surface of the non-woven fabric is easily damaged, and the product percent of pass of the disposable sanitary product is influenced.
Disclosure of Invention
The invention aims to provide a method for cutting spandex filaments in a non-woven fabric interlayer, and solves the problems that the non-woven fabric is easy to damage and the product percent of pass is influenced in the conventional hot-pressing cutting mode.
The technical scheme adopted by the invention for solving the technical problems is as follows: a method for cutting the spandex yarn in the non-woven fabric interlayer of a disposable sanitary product is used for cutting the spandex yarn in the non-woven fabric interlayer of the disposable sanitary product, and an ultrasonic vibration device is arranged on a transmission path of a pre-cutting position of the spandex yarn to perform ultrasonic high-frequency vibration beating on the pre-cutting position.
Furthermore, the ultrasonic vibration device comprises a supporting component for supporting the disposable sanitary product and driving the disposable sanitary product to convey forwards and an ultrasonic vibration head arranged opposite to the supporting component, a vibration gap is arranged between the ultrasonic vibration head and the disposable sanitary product, and the disposable sanitary product passes through the vibration gap to cut spandex yarns in a non-woven fabric interlayer of the disposable product.
Preferably, the vibration frequency of the ultrasonic vibration head is 20 KHZ-35 KHZ; the amplitude is 0.03-0.10 mm.
In order to ensure the accuracy of the cutting position and avoid the stretch breaking of the spandex filaments from other positions, the supporting part is provided with a bulge on the transmission path of the cutting position of the spandex filaments.
Furthermore, the width of the line of the preset pattern protrusion is 0.3-0.6 mm.
In order to facilitate the conveying and supporting of the disposable sanitary product, the supporting component is an anvil roller which rotates around the self axial direction, the disposable sanitary product enters the anvil roller along the tangential direction of the anvil roller and then is attached to the surface of the anvil roller for conveying, and the disposable sanitary product is conveyed to the position of the ultrasonic vibration head to be cut off and then is discharged along the tangential direction of the position.
As a specific scheme of the ultrasonic vibration head, the welding end face of the ultrasonic vibration head is of a plane structure, and the ultrasonic vibration head performs high-frequency vibration along the vertical direction of the surface of the disposable sanitary product.
As another specific scheme of the ultrasonic vibration head, the ultrasonic vibration head is of a roller structure which rotates around the self axial direction, and the rotation linear speed of the ultrasonic vibration head is consistent with the linear speed of the supporting component.
The structure adopted by the method for cutting off the spandex filament in the non-woven fabric interlayer comprises an ultrasonic vibration device which is arranged on a transmission path of a pre-cutting position of the spandex filament and used for carrying out ultrasonic high-frequency vibration beating on the pre-cutting position.
The invention has the beneficial effects that: the invention cuts the spandex yarn in the non-woven fabric interlayer by replacing the traditional mechanical hot-pressing cutting mode through an ultrasonic mode, and does not damage the non-woven fabric on the surface while cutting the spandex yarn, thereby improving the qualification rate of disposable sanitary products. Simultaneously, set up the arch on the supporting component, with ultrasonic wave synergism, ultrasonic wave is hit at a high speed and is beaten, makes spandex silk cut off the position and acts on the arch, and spandex silk local pressurized increase can further improve the efficiency that spandex silk cut off.
The invention will be explained in more detail below with reference to the drawings and examples.
Drawings
Fig. 1 is a schematic view of the structure of an ultrasonic vibration device 1 according to the present invention.
Fig. 2 is a schematic structural view 2 of an ultrasonic vibration device according to the present invention.
Fig. 3 is a schematic perspective view of the anvil roll with support ribs according to the present invention.
Fig. 4 is a top view of an arrangement of spandex filaments of the disposable hygiene article.
Fig. 5 is a cross-sectional view of a disposable hygiene article spandex filament arrangement.
FIG. 6 is a schematic view of a pattern 1 formed on a disposable hygienic article by protrusions according to the present invention.
FIG. 7 is a schematic view of a pattern formed on a disposable hygienic article by protrusions according to the present invention 2.
FIG. 8 is a schematic view of the pattern formed on the disposable hygienic article by the protrusions of the present invention shown in FIG. 3.
Detailed Description
Example 1: a method for cutting the urethane elastic fiber in the non-woven fabric interlayer, is used for cutting the urethane elastic fiber held in the non-woven fabric interlayer of the disposable hygiene products, as shown in figure 4, 5, the said disposable hygiene products include upper and lower two-ply non-woven fabrics 100, the urethane elastic fiber 200 set up in the interlayer of two-ply non-woven fabrics 100, both ends of the said urethane elastic fiber 200 are fixed with non-woven fabrics 100 together, the middle part of the urethane elastic fiber 200 can move freely, both ends of the urethane elastic fiber 200 are fixed with non-woven fabrics 100 through the hot melt adhesive, thus form the fixed part 600; the method aims to cut the freely moving position in the middle of the spandex filament. The disposable hygiene articles include, for example, infant pull-ups, feminine menstrual pants, adult pull-ups, and the like.
The method is characterized in that an ultrasonic vibration device is arranged on a transmission path of a pre-cutting position of spandex filaments of a disposable sanitary product to carry out ultrasonic high-frequency vibration on the pre-cutting position, so that the spandex filaments are cut off. The method can not cause indentation and damage to the non-woven fabric on the surface of the disposable sanitary product, has high cutting efficiency, and can effectively improve the quality of the product. The vibration frequency of the ultrasonic vibration device is 20 KHZ-35 KHZ; the amplitude is 0.03-0.10 mm.
The ultrasonic vibration device comprises a supporting part 1 for supporting the disposable sanitary product and driving the disposable sanitary product to convey forwards, and an ultrasonic vibration head 2 arranged opposite to the supporting part, wherein a vibration gap 3 is arranged between the ultrasonic vibration head 2 and the disposable sanitary product, and the disposable sanitary product passes through the vibration gap 3, so that the cutting of spandex yarns in a non-woven fabric interlayer of the disposable product is realized.
The structure of the support member 1 and the ultrasonic vibration head 2 and the mounting position thereof are described in detail below.
The supporting component 1 can adopt a plane conveying belt, a supporting plate is arranged below the conveying belt, and the disposable sanitary products are placed on the conveying belt and conveyed forwards under the driving of the conveying belt. The transfer may also be performed by using an anvil roll 11 rotating around its own axis, as shown in fig. 1, and the transfer is preferably performed by using the anvil roll according to the present invention in order to reduce the transfer distance. The disposable sanitary product enters the anvil roll 11 along the tangential direction of the anvil roll, is attached to the surface of the anvil roll for transmission, and is transmitted to the position of the ultrasonic vibration head 2 to be cut off and then is discharged along the tangential direction of the position.
The welding end face of the ultrasonic vibration head 2 is of a plane structure, and the ultrasonic vibration head 2 conducts high-frequency vibration along the vertical direction of the surface of the disposable sanitary product. As shown in fig. 1, the arrow direction is the dither direction. The matching structure of the ultrasonic vibration head 2 can refer to chinese patent application No. 201920795106.3, and is named as an ultrasonic welding head structure in an ultrasonic welding device, and the principle of generating vibration is the same as that of an ultrasonic welding head.
In order to ensure that the spandex filament is cut along a set position, the surface of the anvil roll 11 is provided with a projection 12 on a transmission path of the spandex filament cutting position, as shown in fig. 3. The bulges 12 are of strip-shaped structures, and the width of the bulges 12 is preferably 0.3-0.6 mm. Under the action of the protrusion 12, the ultrasonic vibration head strikes the disposable sanitary product, the disposable sanitary product is firstly contacted with the protrusion 12, the pressure deformation of the spandex yarn at the position is larger than that of other areas under the action of the protrusion, so that the spandex yarn is more easily broken under the action of ultrasonic waves, and the accuracy of the broken position of the spandex yarn is ensured. The shape of the protrusion 12 can be adjusted according to the requirement of the cutting position of the spandex filament, as shown in fig. 6 to 8, the protrusion can be an S-shaped protrusion and pressed on the disposable sanitary product to form an S-shaped indentation 300, or a plurality of protrusions arranged in an oblique line form and pressed on the disposable sanitary product to form a plurality of oblique line-shaped indentations 400; and may be a series of raised structures arranged in a discontinuous line that are pressed against the disposable hygiene article to form intermittent indentations 500.
Example 2:
a method of cutting spandex filaments in a nonwoven fabric sandwich for cutting spandex filaments held in the nonwoven fabric sandwich of a disposable hygiene article such as infant pull-ups, feminine menstrual pants, adult pull-ups, and the like. The method is characterized in that an ultrasonic vibration device is arranged on a transmission path of a pre-cutting position of spandex filaments of a disposable sanitary product to carry out ultrasonic high-frequency vibration on the pre-cutting position, so that the spandex filaments are cut off.
The ultrasonic vibration device comprises a supporting part 1 for supporting the disposable sanitary product and driving the disposable sanitary product to convey forwards, and an ultrasonic vibration head 2 arranged opposite to the supporting part, wherein a vibration gap 3 is arranged between the ultrasonic vibration head 2 and the disposable sanitary product, and the disposable sanitary product passes through the vibration gap 3, so that the cutting of spandex yarns in a non-woven fabric interlayer of the disposable product is realized.
The ultrasonic vibration head 2 is a roller structure which rotates around the self axial direction, as shown in fig. 2, the linear speed of the ultrasonic vibration head 2 is consistent with the linear speed of the supporting component 1, namely, the linear speed of the horizontal conveying belt or the anvil roller 11. The structure of the ultrasonic transducer head 2 is the same as that of example 1, with reference to chinese patent application No. 201921478697.8, entitled ultrasonic transducer structure in an ultrasonic welding device for disposable absorbent sanitary products.
The invention is described above with reference to the accompanying drawings. It is to be understood that the specific implementations of the invention are not limited in this respect. Various insubstantial improvements are made by adopting the method conception and the technical scheme of the invention; the present invention is not limited to the above embodiments, and can be modified in various ways.
Claims (10)
1. A method for cutting spandex filaments in a nonwoven fabric sandwich for use in cutting spandex filaments in a nonwoven fabric sandwich for disposable hygiene articles, the method comprising: and arranging an ultrasonic vibration device on a transmission path of the pre-cutting position of the spandex filament to carry out ultrasonic high-frequency vibration striking on the pre-cutting position.
2. The method of cutting spandex filaments in a nonwoven fabric sandwich as claimed in claim 1, wherein: the ultrasonic vibration device comprises a supporting part and an ultrasonic vibration head, wherein the supporting part is used for supporting the disposable sanitary product and driving the disposable sanitary product to convey forwards, the ultrasonic vibration head is arranged opposite to the supporting part, a vibration gap is formed between the ultrasonic vibration head and the disposable sanitary product, and the disposable sanitary product passes through the vibration gap to cut off spandex yarns in a non-woven fabric interlayer of the disposable product.
3. The method of cutting spandex filaments in a nonwoven fabric sandwich as claimed in claim 2, wherein: the vibration frequency of the ultrasonic vibration head is 20 KHZ-35 KHZ; the amplitude is 0.03-0.10 mm.
4. The method of cutting spandex filaments in a nonwoven fabric sandwich as claimed in claim 2, wherein: the supporting part is provided with a bulge on a transmission path at a spandex filament cutting position.
5. The method of cutting spandex filaments in a nonwoven fabric sandwich as claimed in claim 4, wherein: the width of the protrusion is 0.3-0.6 mm.
6. The method of cutting spandex filaments in a nonwoven fabric sandwich as claimed in claim 2, wherein: the support component is an anvil roller which rotates around the self axial direction, the disposable sanitary product enters the anvil roller along the tangential direction of the anvil roller and then is attached to the surface of the anvil roller for transmission, and the disposable sanitary product is transmitted to the position of the ultrasonic vibration head and then is discharged along the tangential direction of the position after being cut off.
7. The method of cutting spandex filaments in a nonwoven fabric sandwich as claimed in claim 2, wherein: the welding end face of the ultrasonic vibration head is of a plane structure, and the ultrasonic vibration head conducts high-frequency vibration along the vertical direction of the surface of the disposable sanitary product.
8. The method of cutting spandex filaments in a nonwoven fabric sandwich as claimed in claim 2, wherein: the ultrasonic vibration head is of a roller structure which rotates around the self axial direction, and the rotating linear speed of the ultrasonic vibration head is consistent with the linear speed of the supporting component.
9. The utility model provides a structure that cutting off is arranged in non-woven fabrics intermediate layer spandex silk which characterized in that: an ultrasonic vibration device for carrying out ultrasonic high-frequency vibration beating on the precut position and a supporting component for supporting the disposable sanitary product and driving the disposable sanitary product to convey forwards are arranged on a transmission path of the precut position of the spandex filament.
10. The structure for cutting spandex filaments in a non-woven fabric sandwich as claimed in claim 9, wherein: the supporting part is provided with a bulge on a transmission path at a spandex filament cutting position, and the bulge is a single linear graph or a plurality of linear graphs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111003647.6A CN113737508A (en) | 2021-08-30 | 2021-08-30 | Method and structure for cutting spandex filaments in non-woven fabric interlayer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111003647.6A CN113737508A (en) | 2021-08-30 | 2021-08-30 | Method and structure for cutting spandex filaments in non-woven fabric interlayer |
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| Publication Number | Publication Date |
|---|---|
| CN113737508A true CN113737508A (en) | 2021-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111003647.6A Pending CN113737508A (en) | 2021-08-30 | 2021-08-30 | Method and structure for cutting spandex filaments in non-woven fabric interlayer |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020062901A1 (en) * | 2000-11-30 | 2002-05-30 | Couillard Jack Lee | Ramped ultrasonic bonding anvil and method for intermittent bonding |
| CN101255652A (en) * | 2008-04-03 | 2008-09-03 | 凯锐（佛山）服装配件有限公司 | Zipper cutting-off mechanism |
| JP2008260131A (en) * | 2007-04-10 | 2008-10-30 | Zuiko Corp | Manufacturing method for laminated stretchable sheet |
| CN102209513A (en) * | 2008-11-11 | 2011-10-05 | 尤妮佳股份有限公司 | Method of manufacturing absorptive article |
| WO2016104422A1 (en) * | 2014-12-26 | 2016-06-30 | ユニ・チャーム株式会社 | Elastic nonwoven fabric manufacturing method |
| US20180015709A1 (en) * | 2015-01-30 | 2018-01-18 | Daio Paper Corporation | Method of manufacturing stretchable sheet |
| CN210100736U (en) * | 2019-05-30 | 2020-02-21 | 黄山富田精工制造有限公司 | Ultrasonic welding device |
| CN210792124U (en) * | 2019-09-05 | 2020-06-19 | 黄山富田精工制造有限公司 | Disposable absorbent sanitary product ultrasonic welding device |
-
2021
- 2021-08-30 CN CN202111003647.6A patent/CN113737508A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020062901A1 (en) * | 2000-11-30 | 2002-05-30 | Couillard Jack Lee | Ramped ultrasonic bonding anvil and method for intermittent bonding |
| JP2008260131A (en) * | 2007-04-10 | 2008-10-30 | Zuiko Corp | Manufacturing method for laminated stretchable sheet |
| CN101255652A (en) * | 2008-04-03 | 2008-09-03 | 凯锐（佛山）服装配件有限公司 | Zipper cutting-off mechanism |
| CN102209513A (en) * | 2008-11-11 | 2011-10-05 | 尤妮佳股份有限公司 | Method of manufacturing absorptive article |
| WO2016104422A1 (en) * | 2014-12-26 | 2016-06-30 | ユニ・チャーム株式会社 | Elastic nonwoven fabric manufacturing method |
| US20180015709A1 (en) * | 2015-01-30 | 2018-01-18 | Daio Paper Corporation | Method of manufacturing stretchable sheet |
| CN210100736U (en) * | 2019-05-30 | 2020-02-21 | 黄山富田精工制造有限公司 | Ultrasonic welding device |
| CN210792124U (en) * | 2019-09-05 | 2020-06-19 | 黄山富田精工制造有限公司 | Disposable absorbent sanitary product ultrasonic welding device |
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Inventor after: Li Dazhu Inventor after: He Changqing Inventor before: Gong Zhilong Inventor before: Li Dazhu Inventor before: He Changqing |
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