WO2017156969A1 - 一种打孔无纺布及其生产方法 - Google Patents

一种打孔无纺布及其生产方法 Download PDF

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Publication number
WO2017156969A1
WO2017156969A1 PCT/CN2016/094311 CN2016094311W WO2017156969A1 WO 2017156969 A1 WO2017156969 A1 WO 2017156969A1 CN 2016094311 W CN2016094311 W CN 2016094311W WO 2017156969 A1 WO2017156969 A1 WO 2017156969A1
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WO
WIPO (PCT)
Prior art keywords
nonwoven fabric
layer
open
roller
woven fabric
Prior art date
Application number
PCT/CN2016/094311
Other languages
English (en)
French (fr)
Other versions
WO2017156969A8 (zh
Inventor
谢继华
蔡吉祥
Original Assignee
厦门延江新材料股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 厦门延江新材料股份有限公司 filed Critical 厦门延江新材料股份有限公司
Priority to PL16894130.0T priority Critical patent/PL3431063T3/pl
Priority to US15/744,078 priority patent/US10821036B2/en
Priority to EP16894130.0A priority patent/EP3431063B1/en
Priority to KR1020187001246A priority patent/KR102049183B1/ko
Priority to JP2018502710A priority patent/JP6585276B2/ja
Priority to BR112018002801-0A priority patent/BR112018002801B1/pt
Publication of WO2017156969A1 publication Critical patent/WO2017156969A1/zh
Publication of WO2017156969A8 publication Critical patent/WO2017156969A8/zh

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    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/5116—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers
    • A61F2013/51178—Topsheet, i.e. the permeable cover or layer facing the skin being formed of multiple layers with the combination of nonwoven webs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
    • A61F2013/51338—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability having improved touch or feeling, e.g. smooth film
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/513—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability
    • A61F2013/51355—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its function or properties, e.g. stretchability, breathability, rewet, visual effect; having areas of different permeability for improving fluid flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/04—Punching, slitting or perforating
    • B32B2038/047—Perforating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/02—2 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/728—Hydrophilic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/73—Hydrophobic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2555/00—Personal care
    • B32B2555/02—Diapers or napkins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/16—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
    • B32B37/20—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of continuous webs only
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • Y10T428/24281—Struck out portion type

Definitions

  • the invention relates to the field of non-woven fabrics, in particular to a perforated non-woven fabric having a three-dimensional funnel-shaped opening and a gas flow passage and a production method thereof.
  • the non-woven fabric has properties such as softness, skin-friendlyness, and breathability, and is widely used in sanitary napkins such as sanitary napkins and diapers, cleaning articles such as wiping devices, and medical articles such as masks.
  • sanitary napkins such as sanitary napkins and diapers
  • cleaning articles such as wiping devices
  • medical articles such as masks.
  • blood clots or baby soft stools which may be contained in the body fluids may adhere to the surface layer of the sanitary napkin or the diaper, thereby greatly reducing the comfort and breathability of the sanitary article.
  • Patent document CN2010101842233 describes a composite sheet in which a plurality of convex portions composed of an upper fibrous sheet are formed on a substantially flat lower fibrous sheet by three-dimensional shaping of the upper fibrous sheet, and between the convex portions
  • the utility model has a concave portion, and the concave portion and the convex portion are alternately arranged on the composite sheet, and the alternating arrangement of the concave portion and the convex portion can effectively prevent liquid leakage, and in particular, when the excrement is a high-viscosity excrement soft stool, the soft stool is captured.
  • the convex portion Into the closed recess formed by the convex portion, it becomes less likely to cause lateral flow; however, since the two layers of the nonwoven fabric are bonded by the bonding region of the concave portion, the existence of the bonding point and the bonding region of the concave portion are not The thickening of the woven fabric will hinder the penetration of the excrement, especially the high-viscosity excrement, into the absorbent body, and the soft stool stays on the bonding area of the concave portion, and the strength of the convex portion is insufficient to support the pressure exerted by the baby's body weight. Therefore, the soft stool will adhere to the baby's skin during the use of the diaper, which may cause an undesirable phenomenon such as urinary pain in the baby's skin.
  • An object of the present invention is to overcome the deficiencies of the prior art and to provide a nonwoven fabric which can improve the penetration ability of a nonwoven fabric while maintaining a three-dimensional structure of a projection, and a production method thereof.
  • the solution of the present invention is:
  • the perforated non-woven fabric is characterized in that: the perforated non-woven fabric is formed by overlapping and overlapping three-dimensional funnel-shaped open-hole sleeves of two-layer open-cell non-woven fabric;
  • the cloth has a convex portion and a concave portion, and the convex portion has an inner space; the upper side of the second layer of the open-cell nonwoven fabric and the lower side of the concave portion of the first layer of the open-cell nonwoven fabric are Bonding; the three-dimensional funnel-shaped opening with the sleeve holes overlapping, the first layer of open-cell nonwoven fabric and the second layer of open-cell nonwoven fabric.
  • a continuous plane is formed on the upper surface of the convex portion to form a continuous through air flow passage between the inner continuous space of the convex portion of the first layer of the open-cell nonwoven fabric and the second layer of the open-cell nonwoven fabric.
  • the convex portion and the concave portion are alternately arranged, and the convex portion has an independent discontinuous inner space, and the isolated space of the first layer of the open-cell non-woven convex portion is formed independently of the second layer of the open-cell non-woven fabric. Discontinuous venting channels.
  • the convex portion of the first layer of open-cell nonwoven fabric has an open-cell structure.
  • the opening direction of the three-dimensional funnel-shaped opening extends from the surface toward the bottom surface.
  • the opening direction of the three-dimensional funnel-shaped opening extends from the bottom surface to the surface.
  • the funnel top opening of the three-dimensional funnel-shaped opening has a diameter of 0.2-5 mm.
  • the diameter of the funnel top opening of the three-dimensional funnel-shaped opening is at least 20% larger than the diameter of the opening at the bottom of the funnel.
  • the ratio of the top opening area of the three-dimensional funnel-shaped opening to the total area of the perforated nonwoven fabric is less than 70%.
  • the three-dimensional funnel-shaped opening has a three-dimensional height of 0.1 mm to 5 mm.
  • the first layer of the open-cell nonwoven fabric is a water-repellent nonwoven fabric
  • the second layer of the open-cell nonwoven fabric is a hydrophilic nonwoven fabric
  • the first layer of the open-cell nonwoven fabric or/and the second layer of the open-cell nonwoven fabric is one of an air-through nonwoven fabric, a spunbonded nonwoven fabric, and a spunlace nonwoven fabric.
  • the adhesion of the concave portion is a thermal bonding region or a glue bonding region.
  • the invention discloses a method for producing a perforated non-woven fabric, which adopts thermal bonding, characterized in that: the first layer of open-cell non-woven fabric is embossed and punched by a pair of concave-convex pairs, and the The temperature and the piercing process of the tip thereof closely adhere the first layer of the open-cell nonwoven fabric to the convex roller, and then the second layer of the open-cell nonwoven fabric is punched by the third concave roller and bonded by the hot rolling point. .
  • the invention relates to a method for producing a perforated non-woven fabric, which adopts thermal bonding, characterized in that: the first layer of open-cell non-woven fabric is embossed by a pair of concave-convex pairs, and the temperature on the convex roller is The non-woven fabric is pre-punched by the bump, and the first layer of the open-cell nonwoven fabric is closely attached to the convex roller by the temperature on the convex roller and the piercing process of the needle tip, and then the convex roller and the third roller are attached.
  • the concave roller is engaged, and the convex point on the convex roller is pressed into the concave hole of the third concave roller, and at the same time, the second layer of the non-woven fabric is bonded by the third concave roller embossing and the hot rolling point, and passes through the convex
  • Two layers of the nonwoven fabric were pressed into the recessed holes of the third roll, and the two layers of the nonwoven fabric were simultaneously transferred to the third roll, and then punched with the fourth needle roll.
  • the invention relates to a method for producing a perforated non-woven fabric, which adopts adhesive bonding, characterized in that: the first layer of open-cell non-woven fabric is embossed and punched through a pair of concave-convex pairs, and the convex roller is used.
  • the piercing process of the temperature and the tip thereof closely adheres the first layer of the open-cell nonwoven fabric to the convex roller, and then punches the second layer of the non-woven fabric through the third concave roller, the second The layer-opening nonwoven fabric is subjected to a gluing process before entering the concave roller for punching.
  • the present invention is formed by overlapping two layers of open-cell non-woven fabrics by using three-dimensional funnel-shaped openings, and the inner continuous space of the first layer of the open-cell non-woven fabric convex portion and the second layer of the open-cell non-woven fabric.
  • An air flow passage is formed between the cloths, so that the non-woven fabric maintains a convex three-dimensional structure, and provides a permeation passage for the permeation of the non-woven fabric, thereby accelerating the liquid, infiltrating the soft matter and reducing the residue, and finally passing through the two layers.
  • the non-woven fabric is bonded to prevent the convex portion from being squeezed, effectively forming the air flow passage, preventing the passage of the passage, collapsing, providing internal and external circulation of the air flow, reducing the wet feeling;
  • the three-dimensional funnel-shaped opening structure enables the non-woven fabric It has a certain isolation effect from the lower absorbent body, and the upper and lower narrow funnel-shaped structure effectively prevents the backflow of the liquid;
  • the first layer of the open-cell nonwoven fabric is tightly processed by the puncture process using the needle tip during processing. It is attached to the convex roller, which can effectively prevent the first layer of the non-woven fabric and the second layer of the non-woven fabric from being misaligned during the composite processing, and simplifies the process and saves the manufacturing cost.
  • Figure 1 is a plan view showing a perforated nonwoven fabric according to Embodiment 1 of the present invention.
  • Figure 1A is a cross-sectional view of Figure 1 taken along line P-P;
  • Figure 2 is a plan view showing a perforated nonwoven fabric according to Embodiment 2 of the present invention.
  • Figure 2A is a cross-sectional view of Figure 2 taken along Q-Q;
  • Figure 3 is a plan view showing a perforated nonwoven fabric according to Embodiment 3 of the present invention.
  • Figure 3A is a cross-sectional view along line S-S of Figure 3;
  • FIG. 4 is a plan view of a perforated nonwoven fabric according to Embodiment 4 of the present invention.
  • Figure 4A is a cross-sectional view of Figure 4 taken along R-R;
  • Figure 5 is a plan view of a perforated nonwoven fabric according to Embodiment 5 of the present invention.
  • Figure 5A is a cross-sectional view of Figure 5 taken along T-T;
  • Figure 6 is a plan view of a perforated nonwoven fabric according to Example 6 of the present invention.
  • Figure 6A is a cross-sectional view of Figure 6 taken along line L-L;
  • Figure 7 is a view showing a method of producing a perforated nonwoven fabric according to Embodiment 7 of the present invention.
  • Figure 8 is a view showing a method of producing a perforated nonwoven fabric according to Embodiment 8 of the present invention.
  • Figure 9 is a view showing a method of producing a perforated nonwoven fabric according to Example 9 of the present invention.
  • the present invention discloses a perforated non-woven fabric 1 which is formed by overlapping three-dimensional funnel-shaped opening sleeves of two-layer open-cell non-woven fabrics;
  • the non-woven fabric 11 has a convex portion B and a concave portion A, and the convex portion B has an inner space; the upper side of the second layer of the open-cell nonwoven fabric 12 and the first layer of the open-cell nonwoven fabric 11 The lower side of the concave portion A is bonded; the three-dimensional funnel-shaped opening of the sleeve hole is overlapped by the concave portion A of the first layer of the open-cell nonwoven fabric 11 to the lower layer of the second layer of the nonwoven fabric 12 Side extension, or extending from the lower side of the second layer of apertured nonwoven fabric 12 to the concave portion A of the first layer of apertured nonwoven fabric 11, through the first layer of apertured nonwoven 11 and the second layer of aperture Non-woven fabric 12.
  • the convex portion B has a continuous flat surface or a discontinuous flat surface to form a continuous inner space or an isolated space between the first layer of the nonwoven fabric 11 and the second nonwoven fabric 12 Internal space E.
  • the diameter of the funnel top opening of the three-dimensional funnel-shaped opening is 0.2-5 mm; the diameter of the funnel top opening of the three-dimensional funnel-shaped opening is at least 20% larger than the diameter of the opening of the funnel bottom; the three-dimensional funnel-shaped opening
  • the ratio of the top opening area to the total area of the perforated non-woven fabric is less than 70%; the stereoscopic funnel-shaped opening has a solid height of 0.1 mm to 5 mm.
  • test method for the opening ratio is as follows:
  • Measuring instrument Shanghai Changfang XTL-200 electron microscope (connected to computer), CF-2000MIS image analysis system;
  • the three-dimensional height H of the three-dimensional funnel-shaped openings C and D is 0.5 mm, so that the non-woven fabric has a strong stereoscopic effect, and the perforated non-woven fabric 1 is separated from the core of the lower layer, and the upper opening diameter of the C and D is
  • the d is 1.3 mm, the lower opening diameter is 0.8 mm, the d/r is 1.6, and the upper and lower narrow funnel-shaped structure enables the liquid to rapidly infiltrate and can effectively prevent the liquid from rewet.
  • the three-dimensional height of the three-dimensional funnel-shaped opening, the test method of the opening diameter is as follows:
  • Measuring instrument Shanghai Changfang XTL-200 electron microscope (connected to computer), CF-2000MIS image analysis system;
  • Sample preparation Cut a sample along the MD direction with scissors to ensure that the three-dimensional funnel-shaped opening of the edge is complete, and the cut sample is attached to the mold;
  • Image acquisition Open the CF-2000MIS image analysis system, select the magnification 1.5 times, place the sample under the microscope, the mold is down, the sample is facing up, turn on the light source, click the 'Acquire Image' icon, adjust the focus to the image clear, ensure the image You can see 3 to 4 openings, and then click the 'Freeze Image' icon to collect images.
  • the value is the diameter of the upper opening.
  • the value is accurate to 0.01mm.
  • the parallel line is drawn in the funnel shape under the sample funnel. That is the diameter of the upper opening, the value is accurate to 0.01mm.
  • the perforated non-woven fabric 1 shown in FIG. 1 and FIG. 1A is composed of two layers of open-cell non-woven fabrics, and the first-layer open-cell non-woven fabric 11 has a convex portion B and a concave portion A which are in contact with the skin.
  • the convex portion B may be a continuous plane, the concave portion A exists in the convex portion B in the form of 'sea', and the three-dimensional funnel-shaped opening C of the first layer of the open-cell nonwoven fabric exists in the concave portion A
  • the upper side of the second layer of the open-cell nonwoven fabric 12 is bonded to the lower side of the first layer of the open-cell nonwoven fabric concave portion A, and the three-dimensional funnel-shaped opening D of the second layer of the open-cell nonwoven fabric is
  • the three-dimensional funnel-shaped opening C of the first layer of the open-cell nonwoven fabric is overlapped and penetrates through the entire nonwoven fabric 1, and the convex portion B of the first-layer open-cell nonwoven fabric has a continuous internal space E, and a continuous internal space E
  • a continuous air flow passage is formed between the first layer of the apertured nonwoven fabric 11 and the second layer of the apertured nonwoven fabric 12, and the adhesive region of the two layers of the nonwoven fabric is fixedly supported to
  • the passage makes the air passage have a strong pressure resistance. After the pressure is released, the air passage is quickly restored, so that the airflow inside the perforated non-woven fabric 1 is convected with the outside air. Play a role in the cycle, so that the raised areas may be in contact with the skin surface to the user with a soft touch, a nonwoven fabric holding a stereoscopic 3D effect, but also reduces the wet stuffiness, the effect to improve comfort.
  • the diameter of the funnel top opening of the overlapping three-dimensional funnel-shaped openings C, D is 1.0 mm; the diameter R of the funnel top opening of the three-dimensional funnel-shaped opening is at least 30% larger than the opening diameter r of the bottom of the funnel; The ratio of the top opening area of the opening to the total area of the perforated nonwoven fabric is 30%; the solid height of the three-dimensional funnel opening is 1 mm.
  • the overlapping three-dimensional funnel-shaped openings enable the excrement softness to quickly penetrate into the absorbent body from the overlapping three-dimensional funnel-shaped openings C and D, wherein the shape of the opening structure can be circular, square, rectangular, etc. Geometry and its combinations.
  • the three-dimensional funnel-shaped opening C, D has a diversion effect, and can also quickly infiltrate the liquid from the opening portion, thereby improving the dry performance of the absorbent article and promoting the liquid. Fast absorption.
  • the perforated nonwoven fabric 1 shown in Figs. 2 and 2A is composed of two layers of non-woven fabrics, and the first layer of the open-cell nonwoven fabric 11 has a convex portion B and a concave portion A which are in contact with the skin, and a projection
  • the top view of the portion B is an isolated raised 'island'
  • the concave portion A is surrounded by the convex portion B in the form of 'sea'
  • the three-dimensional funnel-shaped opening C of the first layer of the open-cell nonwoven fabric exists in the concave portion
  • the upper side of the second layer of the nonwoven fabric 12 is bonded to the lower side of the first layer of the nonwoven fabric concave portion A
  • the third layer of the apertured nonwoven fabric has a three-dimensional funnel-shaped opening.
  • the independent internal space E forms a separate air flow passage between the first layer of the open-cell nonwoven fabric 11 and the second layer of the open-cell nonwoven fabric 12, and the bonding area of the two layers of the nonwoven fabric,
  • the air passage is fixedly supported, so that the air passage has a strong pressure resistance, maintaining the 3D visual effect of the three-dimensional non-woven fabric, reducing the wet feeling and improving the comfort effect.
  • the diameter of the funnel top opening of the overlapping three-dimensional funnel-shaped openings C, D is 1.5 mm; the diameter R of the funnel top opening of the three-dimensional funnel-shaped opening is at least 25% larger than the opening diameter r of the bottom of the funnel;
  • the overlapping three-dimensional funnel-shaped openings enable the excrement softness to quickly penetrate into the absorbent body from the overlapping three-dimensional funnel-shaped openings C and D, wherein the shape of the opening structure can be circular, square, rectangular, etc. Geometry and its combinations.
  • the three-dimensional funnel-shaped opening C, D has a diversion effect, and can also quickly infiltrate the liquid from the opening portion, thereby improving the dry performance of the absorbent article and promoting the liquid. Fast absorption.
  • the perforated nonwoven fabric 1 shown in Figs. 3 and 3A is composed of two layers of non-woven fabrics, and the first layer of the open-cell nonwoven fabric 11 has a convex portion B and a concave portion A which are in contact with the skin, and a projection
  • the top view of the portion B is a continuous plane
  • the concave portion A exists in the convex portion B in the form of 'sea'
  • the three-dimensional funnel-shaped opening C of the first layer of the open-cell nonwoven fabric exists in the concave portion A
  • the three-dimensional funnel-shaped opening F is present in the convex portion B, and the upper side of the second-layer open-cell nonwoven fabric 12 is bonded to the lower side of the concave portion A of the first-layer open-cell nonwoven fabric, and the second layer
  • the three-dimensional funnel-shaped opening D of the open-cell nonwoven fabric overlaps with the three-dimensional funnel-shaped opening C of the first layer of the open-cell nonwoven fabric, and penetrate
  • the effect is to reduce the feeling of dampness and improve the comfort.
  • the diameter of the funnel top opening of the overlapping three-dimensional funnel-shaped openings C, D is 2.0 mm; the diameter R of the funnel top opening of the three-dimensional funnel-shaped opening is at least 40% larger than the opening diameter r of the bottom of the funnel;
  • the ratio of the top opening area of the opening to the total area of the perforated nonwoven fabric is 30%;
  • the solid height of the three-dimensional funnel opening is 0.8 mm.
  • the overlapping three-dimensional funnel-shaped opening enables the excrement soft stool to quickly penetrate into the absorbent body from the overlapping three-dimensional funnel-shaped openings C, D, the first layer of the open-cell non-woven convex portion having a three-dimensional funnel
  • the opening F not only makes the convex portion more permeable, but also more easily forms a gas flow passage, and when the body fluid flows along the convex portion B to the opening portion, the three-dimensional funnel-shaped opening C, D and the three-dimensional funnel-shaped opening F have both guides.
  • the flow can also quickly infiltrate the liquid from the opening portion, thereby improving the dry performance of the absorbent article and promoting rapid absorption of the liquid.
  • the perforated non-woven fabric 1 shown in Figs. 4 and 4A is composed of two layers of non-woven fabrics, and the first-layer apertured nonwoven fabric 11 has a convex portion B and a concave portion A which are in contact with the skin, and a projection
  • the top view of the portion B is a continuous plane
  • the concave portion A exists in the convex portion B in the form of 'sea'
  • the three-dimensional funnel-shaped opening C of the first layer of the open-cell nonwoven fabric exists in the concave portion A
  • the upper side of the second layer of the open-cell nonwoven fabric 12 is bonded to the lower side of the concave portion A of the first layer of the open-cell nonwoven fabric, and the three-dimensional funnel-shaped opening D of the second layer of the open-cell nonwoven fabric
  • the three-dimensional funnel-shaped opening C of the one-layer open-cell nonwoven fabric is overlapped and penetrates through the entire nonwoven fabric 1, and the convex portion B of the first-layer
  • the air flow passage has a strong pressure resistance, and after the pressure is released, the air flow passage is quickly restored, so that the airflow inside the perforated non-woven fabric 1 and the outside air pair , Acts cycle, this system can make contact with the raised regions of the skin surface to the user with a soft touch, a nonwoven fabric holding a stereoscopic 3D effect, but also reduces the wet stuffiness, the effect to improve comfort.
  • the diameter of the funnel top opening of the overlapping three-dimensional funnel-shaped openings C, D is 2.5 mm; the diameter R of the funnel top opening of the three-dimensional funnel-shaped opening is at least 40% larger than the opening diameter r of the bottom of the funnel; The ratio of the opening area at the top of the opening to the total area of the perforated nonwoven fabric was 28%; the solid height of the three-dimensional funnel-shaped opening was 1.2 mm.
  • the overlapping three-dimensional funnel-shaped openings enable the excrement softness to quickly penetrate into the absorbent body from the overlapping three-dimensional funnel-shaped openings C, D, wherein the shape of the opening structure can be circular, square, rectangular, etc. Geometry and its combinations.
  • the three-dimensional funnel-shaped opening C, D has both a flow guiding effect and a rapid penetration of the liquid from the opening portion, thereby improving the dry performance of the absorbent article and promoting the liquid. Fast absorption.
  • the perforated non-woven fabric 1 shown in Figs. 5 and 5A is composed of two layers of non-woven fabrics, and the first layer of the open-cell non-woven fabric 11 has a convex portion B and a concave portion A which are in contact with the skin, and the convex portion
  • the top view of B is a continuous plane
  • the concave portion A exists in the convex portion B in the form of 'sea'
  • the three-dimensional funnel-shaped opening C of the first layer of the open-cell nonwoven fabric exists in the concave portion A
  • the upper side of the second layer of the apertured nonwoven fabric 12 is bonded to the lower side of the first layer of the apertured nonwoven fabric recessed portion A
  • the third layer of the apertured nonwoven fabric has a three-dimensional funnel-shaped opening D and the first
  • the three-dimensional funnel-shaped opening C of the layer-opening nonwoven fabric overlaps, runs through the entire nonwoven fabric 1, the three-dimensional funnel-shaped opening C, D consists of the
  • the cloth 12 forms a continuous air flow passage through the entire non-woven fabric 1, and the bonding area of the two non-woven fabrics fixedly supports the air flow passage, so that the air flow passage has strong resistance. After the pressure is released, the airflow passage is quickly restored, so that the airflow inside the perforated non-woven fabric 1 convects with the outside air to circulate, so that the convex region contacting the skin surface can bring softness to the user.
  • the touch feels the 3D visual effect of the three-dimensional non-woven fabric, which reduces the feeling of dampness and improves the comfort.
  • the diameter of the funnel top opening of the overlapping three-dimensional funnel-shaped openings C, D is 2.0 mm; the diameter R of the funnel top opening of the three-dimensional funnel-shaped opening is at least 30% larger than the opening diameter r of the bottom of the funnel; The ratio of the opening area at the top of the opening to the total area of the perforated nonwoven fabric was 28%; the solid height of the three-dimensional funnel-shaped opening was 0.5 mm.
  • the perforated non-woven fabric 1 shown in Figs. 6 and 6A is composed of two layers of non-woven fabrics.
  • the first layer of the open-cell nonwoven fabric 11 is a water-repellent non-woven fabric
  • the second layer of the perforated non-woven fabric 12 In the case of a hydrophilic nonwoven fabric, the first layer of the open-cell nonwoven fabric 11 has a convex portion B and a concave portion A in contact with the skin, and the top view of the convex portion B is a continuous plane, and the concave portion A is a 'sea'
  • the form is present in the convex portion B, and the three-dimensional funnel-shaped opening C of the first layer of the open-cell nonwoven fabric is present in the concave portion A, and the upper side of the second-layer open-cell nonwoven fabric 12 is opened with the first layer
  • the lower side of the hole non-woven fabric concave portion A is bonded, and the three-dimensional funnel-shaped opening D of the second layer
  • the funnel-shaped openings C, D have a funnel top opening having a diameter of 2.5 mm; the three-dimensional funnel-shaped opening has a diameter R of at least 40% larger than the opening diameter r of the funnel bottom; the three-dimensional funnel-shaped opening The ratio of the top opening area to the total area of the perforated nonwoven fabric was 28%; the solid height of the three-dimensional funnel-shaped opening was 1.2 mm.
  • the soft stool When the excrement is soft and comes into contact with the convex portion B of the first layer of water-repellent non-woven fabric, the soft stool cannot be retained on the surface of the first layer of the open-cell non-woven fabric due to the water repellent effect, and rapidly from the convex portion B It slides down to the concave portion A and rapidly penetrates into the lower absorbent body through the overlapping three-dimensional funnel-shaped opening C of the concave portion, thereby exerting a dry effect.
  • a perforated non-woven fabric is realized by the first layer of the perforated non-woven fabric 11 passing through a pair of intertwined concave-convex rollers M and N at a speed of 5 -100 m / min, the temperature of the concave roller M can be set, the temperature range is 40-200 ° C, the temperature of the convex roller N can be set, the temperature range is 30-200 ° C, and the concave roller M has a concave shape b and the concave hole a distributed in the concave portion, the depth of the concave b is in the range of 0.5-45 mm, the depth of the concave hole a is 0.5-50 mm, and the convex roller N has the boss c and the needle d on the boss, convex
  • the height of the table c is 0.5-50 mm
  • the height of the needle d is 0.5-45 mm
  • the concave portion A is formed in the case where the concave b of the M roller and the boss c of the N roller are pressed and heated, and the opening structure is formed in the case where the concave hole a of the M roller and the needle tip d of the N roller are pierced and heated.
  • C the concave roller M and the convex roller N bite each other and are driven by the transmission mechanism, the concave roller M and the convex roller N are heating rollers, the heating temperature and the nip gap can be set, and the non-woven fabric 11 passes through the concave roller M and the convex roller N roller.
  • the first layer of the opening nonwoven fabric 11 is fixed by the needle tip, and is firmly attached to the convex roller N, thereby achieving rapid saving and effective
  • the positioning effect greatly saves energy consumption, and the second layer of the apertured nonwoven fabric 12 enters the N roller, contacts the first layer of the apertured nonwoven fabric 11, and enters the convex roller N and the third concave roller together.
  • the needle d having the concave hole f and the N roller on the third concave roller O is pierced and squeezed while covering the first layer of the open nonwoven fabric 11, forming a three-dimensional funnel-shaped opening D and sticking
  • the second layer of the open-cell nonwoven fabric 12 is bonded, and the two layers of the nonwoven fabric are bonded and pierced together to form a perforated nonwoven fabric 1 having a two-layer structure.
  • another implementation of the perforated nonwoven fabric is that the first layer of the apertured nonwoven fabric 11 is passed through a pair of intertwined concave and convex rollers M and N at a speed of 5 -100 m / min, the temperature of the concave roller M can be set, the temperature range is 40-200 ° C, the temperature of the convex roller N can be set, the temperature range is 30-200 ° C, and the concave roller M has a concave shape b and the concave hole a distributed in the concave portion, the depth of the concave b is in the range of 0.5-45 mm, the depth of the concave hole a is 0.5-50 mm, and the height of the boss c is raised on the convex roller N with the boss c and the needle d The degree is 0.5-50mm, the height of the needle d is 0.5-45mm, the gap between the concave roller
  • the concave roller M and the convex roller N bite and merge with each other by the transmission mechanism
  • the concave roller M and the convex roller N are heating rollers
  • the heating temperature and the nip gap can be set
  • the non-woven fabric 11 is formed by the heating extrusion of the concave roller M and the convex roller N.
  • With raised and open holes The three-dimensional non-woven fabric is attached to the convex roller N, and the non-woven fabric 11 is heated and extruded by the concave roller M and the convex roller N roller to form a three-dimensional non-woven fabric having protrusions and openings, and is pierced by the needle tip d.
  • the first layer of open-cell non-woven fabric 11 is fixed by the needle tip, so that it is firmly attached to the N-roller, which has a fast saving, effective positioning effect, and greatly saves energy consumption, and the second layer of open-cell nonwoven fabric 12
  • the surface is sized, enters the convex roller N, contacts the first layer of the open-cell nonwoven fabric 11, and enters the convex roller N and the third concave roller O together
  • the needle d having the concave hole f and the N roller on the three concave roller O pierces the second layer of the opening nonwoven 12 while covering the first layer of the open nonwoven 11 to form a three-dimensional funnel-shaped opening D.
  • the layer non-woven fabric is adhesively bonded and pierced together to form a perforated nonwoven fabric 1 having a two-layer structure.
  • a perforated non-woven fabric is realized by passing the first layer of the apertured nonwoven fabric 11 through a pair of concave rollers M and convex rollers N which are engaged with each other at a speed of 5-100 m / min, the temperature of the concave roll M can be set, the temperature range is 40-200 ° C, the temperature of the convex roll N can be set, the temperature range is 30-200 ° C, and the concave roll M has a concave Into the b and the concave hole a distributed in the concave area, the depth of the concave b is in the range of 0.5-45 mm, the depth of the concave hole a is 0.5-50 mm, and the convex roller N has the boss c and the convex point d on the boss The height of the boss c is 0.5-50 mm, the height of the bump d is 0.5-45 mm, the gap between the
  • the concave portion A is formed in the case where the concave portion b of the concave roller M and the projection c of the convex roller N are pressed and heated, and the concave portion a of the concave roller M roller and the convex portion N of the convex roller N are pressed.
  • the pre-stereo funnel-shaped opening C1 is formed under heating, the concave roller M and the convex roller N are bitten with each other and driven by the transmission mechanism, the concave roller M and the convex roller N are heating rollers, the heating temperature and the nip gap can be set, and the non-woven The cloth 11 passes through the concave roller M and the convex roller N Heating and extruding to form a three-dimensional non-woven fabric having protrusions and pre-opening holes, and attaching to the convex roller N, the second layer of the apertured nonwoven fabric 12 enters into the convex roller N, and the first layer of the apertured nonwoven fabric 11 Contacting and entering together into the N roll and the K roll of the convex roll, the K roll has a concave hole f and the bump d of the N roll are paired with each other, the first layer of open non-woven fabric 11 and the second layer of open non-woven fabric 12 together through the N roll, the K roll is heated and squeezed

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Abstract

一种打孔无纺布（1）及其生产方法，由二层开孔无纺布（11、12）的立体漏斗形开孔（C、D）套孔重叠复合而成；所述第一层开孔无纺布（11）具凸起部分（B）与凹入部分（A），所述的凸起部分（B）具有内部空间（E）；所述第二层开孔无纺布（12）的上侧与第一层开孔无纺布（11）的凹入部分（A）的下侧进行粘结；所述套孔重叠的立体漏斗形开孔（C、D）贯穿第一层开孔无纺布（11）和第二层开孔无纺布（12）。第一层开孔无纺布（11）凸起部分（B）的内部连续空间与第二层开孔无纺布（12）之间形成有气流通道，为无纺布的渗透提供一个渗透通道，进而加快液体，排泄物软便渗透和减少残留，提供气流的内外循环，减少湿闷感。在加工中采用针尖的穿刺工序将第一层开孔无纺布（11）紧密的贴附在凸辊（N）上，有效防止复合加工过程中两层无纺布的错位，又简化了工艺，节省了制造成本。

Description

一种打孔无纺布及其生产方法 技术领域
本发明涉及无纺布领域，特别是指一种具有立体漏斗形开孔、气流通道的打孔无纺布及其生产方法。
背景技术
无纺布具有柔软，亲肤及透气等特性，被广泛地用于生理卫生巾或纸尿裤等卫生用品、擦拭装置等清扫用品，以及面罩等医疗用品等领域。但在卫生巾或纸尿裤使用中，体液中可能含有的血块或婴儿软便都会附着在卫生巾或纸尿裤的面层，因此大大降低了卫生用品的舒适性和透气性。
专利文献CN2010101842233记载了一种复合片材，其中通过对上层纤维片材进行立体赋形，在实质上平坦的下层纤维片材上具有上层纤维片材构成的大量的凸部，并且在凸部间具有凹部，凹部与凸部在复合片材上交替配置，通过凹部与凸部的交替配置，可以有效地防止漏液，特别是排泄物为高粘度的排泄物软便时，软便就被捕捉到由凸部包围形成的封闭的凹部内，从而变得不易引起横向流动；但是，由于两层无纺布通过凹部的粘结区域进行粘合，粘合点的存在以及凹部的粘结区域无纺布变厚，会阻碍排泄物特别是高粘度的排泄物软便向吸收体的渗透，软便停留在凹部的粘结区域上，凸起部分的强度不足以支撑婴儿的体重带来的压力，因此软便在纸尿裤的使用过程中会贴在婴儿的皮肤上，从而会造成婴儿皮肤的尿症等不良现象的发生。同时，采用中国专利文献CN2010101842233的生产方法，由于无纺布本身在有张力的情况下易拉伸变形，从而导致在实际生产时无纺布的凸起部分可能会跑位，与凹部进行粘合从而破坏凸起，因此，需要在两辊上增加抽吸系统，使得纤维片层能够贴附在辊周面，达到固定凸起的作用，并且由于无纺布的透气性很好，需要比较大的抽气量，从而造成生产成本高，难度大。
发明内容
本发明的目的在于克服现有技术缺陷，而提供一种在保持凸起的立体结构的同时，提高无纺布渗透能力的无纺布及其生产方法。
为实现上述目的，本发明的解决方案是：
一种打孔无纺布，其特征在于：所述的打孔无纺布由二层开孔无纺布的立体漏斗形开孔套孔重叠复合而成；所述第一层开孔无纺布具凸起部分与凹入部分，所述的凸起部分具有内部空间；所述第二层开孔无纺布的上侧与第一层开孔无纺布的凹入部分的下侧进行粘结；所述套孔重叠的立体漏斗形开孔，贯穿第一层开孔无纺布和第二层开孔无纺布。
所述凸起部分的上面形成一连续的平面，以令第一层开孔无纺布凸起部分的内部连续空间与第二层开孔无纺布之间形成连续贯通的气流通道。
所述凸起部分与凹入部分交替排列，凸起部分具有独立的不连续内部空间，第一层开孔无纺布凸起部分孤立的空间与第二层开孔无纺布形成具有独立的不连续的透气通道。
所述第一层开孔无纺布凸起部分具有开孔结构。
所述立体漏斗形开孔的开孔方向由表面向底面延伸。
所述立体漏斗形开孔的开孔方向由底面向表面延伸。
所述的立体漏斗形开孔的漏斗顶部开孔的直径为0.2-5mm。
所述的立体漏斗形开孔的漏斗顶部开孔的直径至少比漏斗底部的开孔直径大20%以上。
所述立体漏斗形开孔的顶部开孔面积和占打孔无纺布总面积的比例小于70%。
所述立体漏斗形开孔的立体高度为0.1mm-5mm。
所述第一层开孔无纺布为拒水无纺布，第二层开孔无纺布为亲水无纺布。
所述第一层开孔无纺布或/和第二层开孔无纺布为热风无纺布，纺粘无纺布，水刺无纺布中的一种。
所述凹入部分的粘合为热粘合区域或胶粘合区域。
一种打孔无纺布的生产方法，其采用热粘合，其特征在于：所述的第一层开孔无纺布经过一对凹凸对辊压花及打孔后，利用凸辊上的温度及其针尖的刺穿工序将第一层开孔无纺布紧密地贴附在凸辊上，再与第二层开孔无纺布经第三根凹辊打孔及热轧点粘合。
一种打孔无纺布的生产方法，其采用热粘合，其特征在于：所述的第一层开孔无纺布经过一对凹凸对辊压花后，通过凸辊上的温度及其凸点对无纺布进行预打孔处理，利用凸辊上的温度及其针尖的刺穿工序将第一层开孔无纺布紧密贴附在凸辊上，再将凸辊与第三辊凹辊咬合，将凸辊上的凸点压入第三根凹辊的凹孔中，同时与第二层开孔无纺布经第三根凹辊压花及热轧点粘合，通过凸点将两层无纺布压入到第三辊的凹孔中，并将两层无纺布同时转移到第三辊中，之后，再与第四根针辊进行打孔。
一种打孔无纺布的生产方法，其采用胶粘合，其特征在于：所述的第一层开孔无纺布经过一对凹凸对辊压花及打孔后，利用凸辊上的温度及其针尖的刺穿工序将第一层开孔无纺布紧密地贴附在凸辊上，再与第二层开孔无纺布经第三根凹辊打孔，所述的第二层开孔无纺布在进入凹辊打孔之前进行上胶工序。
采用上述方案后，本发明通过将两层开孔无纺布，利用立体漏斗形开孔重叠而成，第一层开孔无纺布凸起部分的内部连续空间与第二层开孔无纺布之间形成有气流通道，令无纺布在保持凸起的立体结构的同时，为无纺布的渗透提供一个渗透通道，进而加快液体，排泄物软便渗透和减少残留，最后通过两层无纺布的粘结，防止凸起部分被挤压，有效地形成气流通道，防止通道堵塞，压塌，提供气流的内外循环，减少湿闷感；立体漏斗形开孔结构，使无纺布与下层吸收体具有一定的隔离作用，且上宽下窄的漏斗形结构，有效地阻止了液体的返渗；并且在加工中通过采用针尖的穿刺工序将第一层开孔无纺布紧密的贴附在凸辊上，这样可以有效防止复合加工过程中第一层无纺布和第二层无纺布错位，又简化了工艺，节省了制造成本。
附图说明
图1为本发明实施例1的打孔无纺布的俯视图；
图1A为图1沿P-P的剖视图；
图2为本发明实施例2的打孔无纺布的俯视图；
图2A为图2沿Q-Q的剖视图；
图3为本发明实施例3的打孔无纺布的俯视图；
图3A为图3沿S-S的剖视图；
图4为本发明实施例4的打孔无纺布的俯视图
图4A为图4沿R-R的剖视图；
图5为本发明实施例5的打孔无纺布的俯视图
图5A为图5沿T-T的剖视图；
图6为本发明实施例6的打孔无纺布的俯视图
图6A为图6沿L-L的剖视图；
图7为本发明实施例7的打孔无纺布的生产方法；
图8为本发明实施例8的打孔无纺布的生产方法；
图9为本发明实施例9的打孔无纺布的生产方法。
具体实施方式
以下结合附图对本发明的具体实施方式进行说明和描述：
配合图1至图9所示，本发明揭示了一种打孔无纺布1，其由二层开孔无纺布的立体漏斗形开孔套孔重叠而成；所述第一层开孔无纺布11具凸起部分B与凹入部分A，所述的凸起部分B具有内部空间；所述第二层开孔无纺布12的上侧与第一层开孔无纺布11的凹入部分A的下侧进行粘结；所述套孔重叠的立体漏斗形开孔由第一层开孔无纺布11的凹入部分A向第二层开孔无纺布12的下侧延伸，或由第二层开孔无纺布12的下侧向第一层开孔无纺布11的凹入部分A延伸，贯穿第一层开孔无纺布11和第二层开孔无纺布12。所述凸起部分B上面为连续的平面或非连续的平面，以令无纺布第一层开孔无纺布11与第二层无纺布12之间形成连续贯通的内部空间或孤立的内部空间E。所述的立体漏斗形开孔的漏斗顶部开孔的直径为0.2-5mm；立体漏斗形开孔的漏斗顶部开孔的直径至少比漏斗底部的开孔直径大20%以上；立体漏斗形开孔的顶部开孔面积和占打孔无纺布总面积的比例小于70%;立体漏斗形开孔的立体高度为0.1mm-5mm。
开孔率的测试方法如下：
测量仪器：上海长方XTL-200电子显微镜（连接电脑），CF-2000MIS图像分析系统；
1、打开CF-2000MIS图像分析系统，调节倍率为1.0并标定。将样品放置在镜片下方，打开光源，调节光源至阀值95时直方图有两个波峰出现；
2、点击'采集图像'图标，调节焦距使图像达到最清晰的效果，点击'冻结图像'图标，进行图片采集。点击'测量矩形参数'图标画一个矩形，矩形里面包含5个孔，矩形尺寸为7500×7500μm，点击'调整测量矩形的位置'对矩形进行微调，再点击'将测量标记与图像融合在一起'图标，使矩形与图像融合；
3、点击'选取矩形区域'图标，选择相同的矩形区域，再点击'分析目标选取并着色'的图标，出现'分析目标确定'的对话框，调节阀值到95，点击确定。点击'处理'按钮，选择'分析目标内外圆滑'，点击其中的'分析目标强内外圆滑'对图片进行处理。再点击'套索目标选取工具'对5个孔以外的着色进行处理；
4、点击'目标分析'的图标，出现'分析结果-可视化处理'的对话框，点击'分析'按钮，出现'单项参数分析'的对话框，在运算选项里选择'代数和/分析区域面积'作为当前的运算选项，点击'计算'按钮，对话框里会显示分析结果A，A×100%即为开孔率，结果精确到0.1%；
立体漏斗形开孔C、D的立体高度h为0.5mm，使得无纺布具有很强的立体效果，并且将打孔无纺布1与下层的芯体隔离开，C、D的上开口直径d为1.3mm，下开口直径为0.8mm，d/r为1.6，上宽下窄的漏斗形结构，使得液体能够快速下渗，并能够有效地阻止液体回渗的作用。
立体漏斗形开孔的立体高度，开口直径的测试方法如下：
测量仪器：上海长方XTL-200电子显微镜（连接电脑），CF-2000MIS图像分析系统；
样品准备：用剪刀沿着MD方向剪下一块样品，确保边缘的立体漏斗形开孔完整，将剪下的样品贴在模具上；
测试步骤：
1）尺寸标定：打开1.5倍定标图像，点击'尺寸标定'图标，将标准标尺拉至正确位置，点击'确认'。
2）图像采集：打开CF-2000MIS图像分析系统，选择倍率1.5倍，将样品放置在显微镜下，模具在下，样品朝上，打开光源，点击'采集图像'图标，调整焦距至图像清晰，确保图像上能看到3到4个开孔，再点击'冻结图像'图标，进行图片采集；
3）测量：点击'测量直线几何参数'图标，在样品漏斗形立体漏斗形开孔的下底面画一条水平线，再从立体漏斗形开孔的顶面至水平线画出垂直的线，其数值即为立体漏斗形开孔的立体高度，数值精确至0.01mm。
点击'测量直线几何参数'图标，在样品漏斗形上开口画出平行的线，其数值即为上开口的直径，数值精确至0.01mm,在样品漏斗形下开口画出平行的线，其数值即为上开口的直径，数值精确至0.01mm。
实施例1
如图1、1A所示的打孔无纺布1，由两层开孔无纺布粘结构成，第一层开孔无纺布11具有皮肤接触的凸起部分B和凹入部分A，凸起部分B可为一连续的平面，凹入部分A以'海'的形式存在于凸起部分B中，第一层开孔无纺布的立体漏斗形开孔C存在于凹入部分A中，第二层开孔无纺布12的上侧与第一层开孔无纺布凹入部分A的下侧进行粘结，第二层开孔无纺布的立体漏斗形开孔D与第一层开孔无纺布的立体漏斗形开孔C重叠，贯穿于整个无纺布1，第一层开孔无纺布的凸起部分B具有连续的内部空间E，连续的内部空间E在第一层开孔无纺布11与第二层开孔无纺布12之间形成连续的贯穿于整个无纺布1的气流通道，两层无纺布的粘结区域，固定支撑了气流通道，使得气流通道具有很强的抗压能力，压力解除后，气流通道迅速恢复，使得打孔无纺布1内部的气流与外界空气对流，起到循环的作用，这样既可以使与皮肤面接触的凸起区域给使用者带来柔软的触感，保持了立体无纺布的3D视觉效果，又降低湿闷感，提高舒适效果。
重叠的立体漏斗形开孔C、D的漏斗顶部开孔的直径为1.0mm；立体漏斗形开孔的漏斗顶部开孔的直径R至少比漏斗底部的开孔直径r大30%；立体漏斗形开孔的顶部开孔面积和占打孔无纺布总面积的比例为30%；立体漏斗形开孔的立体高度为1mm。重叠的立体漏斗形开孔，使得排泄物软便能够迅速地从重叠的立体漏斗形开孔C、D中渗入到吸收体中，其中开孔结构的形状可以为圆形、正方形、长方形等各种几何图形及其组合。当体液沿凸起部分B流向开孔部位，立体漏斗形开孔C、D既具有导流作用，也可以使液体从开孔部位快速渗入，从而提高了吸收制品的干爽性能，也促进了液体快速吸收。
实施例2
如图2、2A所示的打孔无纺布1，由两层无纺布粘结构成，第一层开孔无纺布11具有皮肤接触的凸起部分B和凹入部分A，凸起部分B的俯视图为孤立凸起的'岛屿'，凹入部分A以'海'的形式环绕于凸起部分B中，第一层开孔无纺布的立体漏斗形开孔C存在于凹入部分A中，第二层开孔无纺布12的上侧与第一层开孔无纺布凹入部分A的下侧进行粘结，第二层开孔无纺布的立体漏斗形开孔D与第一层开孔无纺布的立体漏斗形开孔C重叠，贯穿于整个无纺布1，并且环绕在凸起部分B的四周，第一层开孔无纺布的凸起部分B具有独立的内部空间E，独立的内部空间E在第一层开孔无纺布11与第二层开孔无纺布12之间形成独立的气流通道，两层无纺布的粘结区域，固定支撑了气流通道，使得气流通道具有很强的抗压能力，保持了立体无纺布的3D视觉效果，又降低湿闷感，提高舒适效果。重叠的立体漏斗形开孔C、D的漏斗顶部开孔的直径为1.5mm；立体漏斗形开孔的漏斗顶部开孔的直径R至少比漏斗底部的开孔直径r大25%；立体漏斗形开孔的顶部开孔面积和占打孔无纺布总面积的比例为25%；立体漏斗形开孔的立体高度为0.5mm。重叠的立体漏斗形开孔，使得排泄物软便能够迅速地从重叠的立体漏斗形开孔C、D中渗入到吸收体中，其中开孔结构的形状可以为圆形、正方形、长方形等各种几何图形及其组合。当体液沿凸起部分B流向开孔部位，立体漏斗形开孔C、D既具有导流作用，也可以使液体从开孔部位快速渗入，从而提高了吸收制品的干爽性能，也促进了液体快速吸收。
实施例3
如图3、3A所示的打孔无纺布1，由两层无纺布粘结构成，第一层开孔无纺布11具有皮肤接触的凸起部分B和凹入部分A，凸起部分B的俯视图为一连续的平面，凹入部分A以'海'的形式存在于凸起部分B中，第一层开孔无纺布的立体漏斗形开孔C存在于凹入部分A中，立体漏斗形开孔F存在于凸起部分B中，第二层开孔无纺布12的上侧与第一层开孔无纺布凹入部分A的下侧进行粘结，第二层开孔无纺布的立体漏斗形开孔D与第一层开孔无纺布的立体漏斗形开孔C重叠，贯穿于整个无纺布1，第一层开孔无纺布的凸起部分A具有连续的内部空间E，连续的内部空间E在第一层开孔无纺布11与第二层开孔无纺布12之间形成连续的贯穿于整个无纺布1的气流通道，两层无纺布的粘结区域，固定支撑了气流通道，使得气流通道具有很强的抗压能力，压力解除后，气流通道迅速恢复，使得打孔无纺布1内部的气流与外界空气对流，起到循环的作用，这样既可以使与皮肤面接触的凸起区域给使用者带来柔软的触感，保持了立体无纺布的3D视觉效果，又降低湿闷感提高舒适效果。重叠的立体漏斗形开孔C、D的漏斗顶部开孔的直径为2.0mm；立体漏斗形开孔的漏斗顶部开孔的直径R至少比漏斗底部的开孔直径r大40%；立体漏斗形开孔的顶部开孔面积和占打孔无纺布总面积的比例为30%；立体漏斗形开孔的立体高度为0.8mm。重叠的立体漏斗形开孔，使得排泄物软便能够迅速地从重叠的立体漏斗形开孔C，D中渗入到吸收体中，所述第一层开孔无纺布凸起部分具有立体漏斗形开孔F，不但使得凸起部分更加透气，更容易形成气流通道，并且当体液沿凸起部分B流向开孔部位，立体漏斗形开孔C、D以及立体漏斗形开孔F既具有导流作用，也可以使液体从开孔部位快速渗入，从而提高了吸收制品的干爽性能，也促进了液体快速吸收。
实施例4
如图4、4A所示的打孔无纺布1，由两层无纺布粘结构成，第一层开孔无纺布11具有皮肤接触的凸起部分B和凹入部分A，凸起部分B的俯视图为一连续的平面，凹入部分A以'海'的形式存在于凸起部分B中，第一层开孔无纺布的立体漏斗形开孔C存在于凹入部分A中，第二层开孔无纺布12的上侧与第一层开孔无纺布凹入部分A的下侧进行粘结，第二层开孔无纺布的立体漏斗形开孔D与第一层开孔无纺布的立体漏斗形开孔C重叠，贯穿于整个无纺布1，第一层开孔无纺布的凸起部分B具有连续的内部空间E，连续的内部空间E在第一层开孔无纺布11与第二层开孔无纺布12之间形成连续的贯穿于整个无纺布1的气流通道，两层无纺布的粘结区域，固定支撑了气流通道，使得气流通道具有很强的抗压能力，压力解除后，气流通道迅速恢复，使得打孔无纺布1内部的气流与外界空气对流，起到循环的作用，这样既可以使与皮肤面接触的凸起区域给使用者带来柔软的触感，保持了立体无纺布的3D视觉效果，又降低湿闷感，提高舒适效果。重叠的立体漏斗形开孔C、D的漏斗顶部开孔的直径为2.5mm；立体漏斗形开孔的漏斗顶部开孔的直径R至少比漏斗底部的开孔直径r大40%；立体漏斗形开孔的顶部开孔面积和占打孔无纺布总面积的比例为28%；立体漏斗形开孔的立体高度为1.2mm。重叠的立体漏斗形开孔，使得排泄物软便能够迅速地从重叠的立体漏斗形开孔C，D中渗入到吸收体中，其中开孔结构的形状可以为圆形、正方形、长方形等各种几何图形及其组合。当体液沿凸起部分B流向开孔部位，立体漏斗形开孔C，D既具有导流作用，也可以使液体从开孔部位快速渗入，从而提高了吸收制品的干爽性能，也促进了液体快速吸收。
实施例5
如图5、5A所示打孔无纺布1，由两层无纺布粘结构成，第一层开孔无纺布11具有皮肤接触的凸起部分B和凹入部分A，凸起部分B的俯视图为一连续的平面，凹入部分A以'海'的形式存在于凸起部分B中，第一层开孔无纺布的立体漏斗形开孔C存在于凹入部分A中，第二层开孔无纺布12的上侧与第一层开孔无纺布凹入部分A的下侧进行粘结，第二层开孔无纺布的立体漏斗形开孔D与第一层开孔无纺布的立体漏斗形开孔C重叠，贯穿于整个无纺布1，立体漏斗形开孔C，D由凸起部分B，凹入部分A及第二层开孔无纺布12的底面向表面延伸，第一层开孔无纺布的凸起部分B具有连续的内部空间E，连续的内部空间E在第一层开孔无纺布11与第二层开孔无纺布12之间形成连续的贯穿于整个无纺布1的气流通道，两层无纺布的粘结区域，固定支撑了气流通道，使得气流通道具有很强的抗压能力，压力解除后，气流通道迅速恢复，使得打孔无纺布1内部的气流与外界空气对流，起到循环的作用，这样既可以使与皮肤面接触的凸起区域给使用者带来柔软的触感，保持了立体无纺布的3D视觉效果，又降低湿闷感，提高舒适效果。重叠的立体漏斗形开孔C、D的漏斗顶部开孔的直径为2.0mm；立体漏斗形开孔的漏斗顶部开孔的直径R至少比漏斗底部的开孔直径r大30%；立体漏斗形开孔的顶部开孔面积和占打孔无纺布总面积的比例为28%；立体漏斗形开孔的立体高度为0.5mm。
实施例6
如图6、6A所示的打孔无纺布1，由两层无纺布粘结构成，第一层开孔无纺布11为拒水无纺布，第二层开孔无纺布12为亲水无纺布，第一层开孔无纺布11具有皮肤接触的凸起部分B和凹入部分A，凸起部分B的俯视图为一连续的平面，凹入部分A以'海'的形式存在于凸起部分B中，第一层开孔无纺布的立体漏斗形开孔C存在于凹入部分A中，第二层开孔无纺布12的上侧与第一层开孔无纺布凹入部分A的下侧进行粘结，第二层开孔无纺布的立体漏斗形开孔D与第一层开孔无纺布的立体漏斗形开孔C重叠，贯穿于整个无纺布1，第一层开孔无纺布的凸起部分B具有连续的内部空间E，连续的内部空间E在第一层开孔无纺布11与第二层开孔无纺布12之间形成连续的贯穿于整个无纺布1的气流通道，两层无纺布的粘结区域，固定支撑了气流通道，使得气流通道具有很强的抗压能力，压力解除后，气流通道迅速恢复，使得打孔无纺布1内部的气流与外界空气对流，起到循环的作用，这样既可以使与皮肤面接触的凸起区域给使用者带来柔软重叠的立体漏斗形开孔C、D的漏斗顶部开孔的直径为2.5mm；立体漏斗形开孔的漏斗顶部开孔的直径R至少比漏斗底部的开孔直径r大40%；立体漏斗形开孔的顶部开孔面积和占打孔无纺布总面积的比例为28%；立体漏斗形开孔的立体高度为1.2mm。当排泄物软便接触到第一层拒水无纺布的凸起部分B时，因为拒水效果，软便无法滞留在第一层开孔无纺布的表面，迅速地从凸起部分B滑落到凹入部分A，并通过凹入部分的重叠立体漏斗形开孔C，D快速渗入到下层吸收体中，起到干爽的效果。
实施例7
如图7并配合图1，1A所示，一种打孔无纺布其实现方式一为，将第一层开孔无纺布11经过一对相互咬合的凹凸辊M和N，速度为5-100米/分钟，凹辊M的温度可设定，温度范围为40-200℃，凸辊N的温度可设定，温度范围为30-200℃，所述的凹辊M上具有凹入b和分布在凹入区域的凹孔a，凹入b的深度范围为0.5-45mm，凹孔a的深度为0.5-50mm，凸辊N上具凸台c和凸台上的针d，凸台c的高度度为0.5-50mm，针d的高度为0.5-45mm，凹辊M和凸辊N交合的间隙可调整，交合间隙范围为0.1-45mm，无纺布在凹凸辊咬合过程中，在M辊的凹入b和N辊的凸台c受压及加热的情况下形成凹入部分A，在M辊的凹孔a和N辊的针尖d刺穿及加热情况下形成开孔结构C，凹辊M、凸辊N相互咬合并由传动机构传动，凹辊M、凸辊N为加热辊，加热温度及咬合间隙可以设定，无纺布11经过凹辊M、凸辊N辊的加热挤压形成具有凸起及开孔的立体无纺布并通过针尖d的刺穿后，通过针尖固定住第一层开孔无纺布11，使其牢牢贴附在凸辊N上，起到了快速节约，有效的定位效果，大大节约了能耗，第二层开孔无纺布12进入到N辊中，与第一层开孔无纺布11接触，并一同进入到凸辊N与第三凹辊第三凹辊O中，第三凹辊O上具有凹孔f与N辊的针d在包覆第一层开孔无纺布11的同时刺穿挤压，形成立体漏斗形开孔D并粘结第二层开孔无纺布12，将两层无纺布粘结，刺穿在一起，形成双层结构的打孔无纺布1。
实施例8
如图8并配合图1，1A所示，一种打孔无纺布另一实现方式为，将第一层开孔无纺布11经过一对相互咬合的凹凸辊M和N，速度为5-100米/分钟，凹辊M的温度可设定，温度范围为40-200℃，凸辊N的温度可设定，温度范围为30-200℃，所述的凹辊M上具有凹入b和分布在凹入区域的凹孔a，凹入b的深度范围为0.5-45mm，凹孔a的深度为0.5-50mm，凸辊N上具凸台c和针d，凸台c的高度度为0.5-50mm，针d的高度为0.5-45mm，凹辊M和凸辊N交合的间隙可调整，交合间隙范围为0.1-45mm，无纺布在凹凸辊咬合过程中，在M辊的凹入b和N辊的凸台c受压及加热的情况下形成凹入部分A，在M辊的凹孔a和N辊的针尖d刺穿及加热情况下形成开孔结构C，凹辊M、凸辊N相互咬合并由传动机构传动，凹辊M、凸辊N为加热辊，加热温度及咬合间隙可以设定，无纺布11经过凹辊M、凸辊N的加热挤压形成具有凸起及开孔的立体无纺布并依附在凸辊N上，无纺布11经过凹辊M、凸辊N辊的加热挤压形成具有凸起及开孔的立体无纺布并通过针尖d的刺穿后，通过针尖固定住第一层开孔无纺布11，使其牢牢贴附在N辊上，起到了快速节约，有效的定位效果，大大节约了能耗，第二层开孔无纺布12经过一上胶设备3进行上胶工序在表面上胶，进入到凸辊N中，与第一层开孔无纺布11接触，并一同进入到凸辊N与第三凹辊O中，第三凹辊O上具有凹孔f与N辊的针d在包覆第一层开孔无纺布11的同时刺穿第二层开孔无纺布12，形成立体漏斗形开孔D将两层无纺布经过胶粘合粘结，刺穿在一起，形成双层结构的打孔无纺布1。
实施例9
如图9并配合图1，1A所示，一种打孔无纺布再实现方式为，将第一层开孔无纺布11经过一对相互咬合的凹辊M和凸辊N，速度为5-100米/分钟，凹辊M的温度可设定，温度范围为40-200℃，凸辊N的温度可设定，温度范围为30-200℃，所述的凹辊M上具有凹入b和分布在凹入区域的凹孔a，凹入b的深度范围为0.5-45mm，凹孔a的深度为0.5-50mm，凸辊N上具凸台c和凸台上的凸点d，凸台c的高度度为0.5-50mm，凸点d的高度为0.5-45mm，凹辊M和凸辊N交合的间隙可调整，交合间隙范围为0.1-45mm，无纺布在凹凸辊咬合过程中，在凹辊M的凹入b和凸辊N的凸台c受压及加热的情况下形成凹入部分A，在凹辊M辊的凹孔a和凸辊N凸点d压入及加热情况下形成预立体漏斗形开孔C1，凹辊M、凸辊N相互咬合并由传动机构传动，凹辊M、凸辊N为加热辊，加热温度及咬合间隙可以设定，无纺布11经过凹辊M、凸辊N的加热挤压形成具有凸起及预开孔的立体无纺布并依附在凸辊N上，第二层开孔无纺布12进入到凸辊N中，与第一层开孔无纺布11接触，并一同进入到凸辊N辊与K辊中，K辊上具有凹孔f与N辊的凸点d相互配对，第一层开孔无纺布11及第二层开孔无纺布12一起经过N辊，K辊的加热挤压粘结在一起，形成预开孔立体无纺布，并一同转移到K辊上，最后一同进入到K辊与第三凹辊O的中，第三凹辊O上具有与K辊配合的凹入x及针h，凸起部分A进入到凹入x，针h将两层同时刺穿，形成立体漏斗形开孔C，D的打孔无纺布1。
以上所述，仅为本发明的较佳实施例而已，故不能依此限定本发明实施的范围，即依本发明专利范围及说明书内容所作的等效变化与修饰，皆应仍属本发明涵盖的范围内。

Claims (16)

1、一种打孔无纺布，其特征在于：所述的打孔无纺布由二层开孔无纺布的立体漏斗形开孔套孔重叠复合而成；所述第一层开孔无纺布具凸起部分与凹入部分，所述的凸起部分具有内部空间；所述第二层开孔无纺布的上侧与第一层开孔无纺布的凹入部分的下侧进行粘结；所述套孔重叠的立体漏斗形开孔贯穿第一层开孔无纺布和第二层开孔无纺布。
2、如权利要求1所述的一种打孔无纺布，其特征在于：所述凸起部分的上面形成一连续的平面，以令第一层开孔无纺布凸起部分的内部连续空间与第二层开孔无纺布之间形成连续贯通的气流通道。
3、如权利要求1所述的一种打孔无纺布，其特征在于：所述凸起部分与凹入部分交替排列，凸起部分具有独立的不连续内部空间，第一层开孔无纺布凸起部分孤立的空间与第二层开孔无纺布形成具有独立的不连续的透气通道。
4、如权利要求1所述的一种打孔无纺布，其特征在于：所述第一层开孔无纺布凸起部分具有开孔结构。
5、如权利要求1所述的一种打孔无纺布，其特征在于：所述立体漏斗形开孔的开孔方向由表面向底面延伸。
6、如权利要求1所述的一种打孔无纺布，其特征在于：所述立体漏斗形开孔的开孔方向由底面向表面延伸。
7、如权利要求1所述的一种打孔无纺布，其特征在于：所述的立体漏斗形开孔的漏斗顶部开孔的直径为0.2-5mm。
8、如权利要求1所述的一种打孔无纺布，其特征在于：所述的立体漏斗形开孔的漏斗顶部开孔的直径至少比漏斗底部的开孔直径大20%以上。
9、如权利要求1所述的一种打孔无纺布，其特征在于：所述立体漏斗形开孔的顶部开孔面积和占打孔无纺布总面积的比例小于70%。
10、如权利要求1所述的一种打孔无纺布，其特征在于：所述立体漏斗形开孔的立体高度为0.1mm-5mm。
11、如权利要求1所述的一种打孔无纺布，其特征在于：所述第一层开孔无纺布为拒水无纺布，第二层开孔无纺布为亲水无纺布。
12、如权利要求1所述的一种打孔无纺布，其特征在于：所述第一层开孔无纺布或/和第二层开孔无纺布为热风无纺布，纺粘无纺布，水刺无纺布中的一种。
13、如权利要求1所述的一种打孔无纺布，其特征在于：所述凹入部分的粘合为热粘合区域或胶粘合区域。
14、一种如权利要求1所述的打孔无纺布的生产方法，其采用热粘合，其特征在于：所述的第一层开孔无纺布经过一对凹凸对辊压花及打孔后，利用凸辊上的温度及其针尖的刺穿工序将第一层开孔无纺布紧密地贴附在凸辊上，再与第二层开孔无纺布经第三根凹辊打孔及热轧点粘合。
15、一种如权利要求1所述的打孔无纺布的生产方法，其采用热粘合，其特征在于：所述的第一层开孔无纺布经过一对凹凸对辊压花后，通过凸辊上的温度及其凸点对无纺布进行预打孔处理，利用凸辊上的温度及其针尖的刺穿工序将第一层开孔无纺布紧密贴附在凸辊上，再将凸辊与第三辊凹辊咬合，将凸辊上的凸点压入第三根凹辊的凹孔中，同时与第二层开孔无纺布经第三根凹辊压花及热轧点粘合，通过凸点将两层无纺布压入到第三辊的凹孔中，并将两层无纺布同时转移到第三辊中，之后，再与第四根针辊进行打孔。
16、一种如权利要求1所述的打孔无纺布的生产方法，其采用胶粘合，其特征在于：所述的第一层开孔无纺布经过一对凹凸对辊压花及打孔后，利用凸辊上的温度及其针尖的刺穿工序将第一层开孔无纺布紧密地贴附在凸辊上，再与第二层开孔无纺布经第三根凹辊打孔，所述的第二层开孔无纺布在进入凹辊打孔之前进行上胶工序。
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WO2017156969A8 (zh) 2017-12-28
CN105748209B (zh) 2022-04-26
JP6585276B2 (ja) 2019-10-02
KR20180022801A (ko) 2018-03-06
CN105748209A (zh) 2016-07-13
BR112018002801B1 (pt) 2023-03-21
US20180200123A1 (en) 2018-07-19
KR102049183B1 (ko) 2019-11-26
EP3431063B1 (en) 2023-12-06
BR112018002801A2 (pt) 2019-01-15
US10821036B2 (en) 2020-11-03
EP3431063A4 (en) 2019-10-30
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