CN113665184B - Elastic sheet and manufacturing method thereof - Google Patents
Elastic sheet and manufacturing method thereof Download PDFInfo
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- CN113665184B CN113665184B CN202110980709.2A CN202110980709A CN113665184B CN 113665184 B CN113665184 B CN 113665184B CN 202110980709 A CN202110980709 A CN 202110980709A CN 113665184 B CN113665184 B CN 113665184B
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- 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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/022—Non-woven fabric
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- 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
- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
- A61F13/15723—Partitioning batts; Cutting
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- 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
- A61F13/45—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 shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/49007—Form-fitting, self-adjusting disposable diapers
- A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
- A61F13/49011—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the waist region
-
- 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
- A61F13/45—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 shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs
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- 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
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- 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
- B32B37/0076—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised in that the layers are not bonded on the totality of their surfaces
- B32B37/0084—Point bonding
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- 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
- B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
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- 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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- 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
- A61F13/15577—Apparatus or processes for manufacturing
- A61F2013/15821—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing
- A61F2013/15861—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for bonding
- A61F2013/15869—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for bonding with ultrasonic energy
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- 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
- A61F13/15577—Apparatus or processes for manufacturing
- A61F2013/15821—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing
- A61F2013/15934—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for making non-woven
- A61F2013/15991—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing for making non-woven in making composite multi-layered product
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- 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
- B32B2307/51—Elastic
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- 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
- B32B2555/00—Personal care
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Vascular Medicine (AREA)
- Epidemiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
The invention relates to the field of disposable sanitary products, in particular to an elastic sheet which comprises an upper base material, a lower base material and an elastic film, wherein the upper base material and the lower base material are breathable sheets, fastening points are fixedly formed between the upper base material, the elastic film and the lower base material, each fastening point is distributed to form a plurality of partition lines, each partition line is arranged at intervals along the transverse direction, at least one cutting unit is arranged in each two adjacent partition lines, each cutting unit comprises an elongated upper cutting part arranged along the vertical direction in a cutting mode, an elongated lower cutting part arranged along the vertical direction in a cutting mode, a left cutting part arranged along the vertical direction on the left side of the upper cutting part and a right cutting part arranged along the vertical direction on the right side of the lower cutting part, and the left cutting part and the right cutting part are arranged along the vertical direction to form a long strip state. It has solved the not enough, unable technical problem who forms good travelling comfort of current elasticity non-woven fabrics gas permeability. A method for manufacturing the elastic sheet based on the same inventive concept is also provided.
Description
Technical Field
The invention relates to the field of disposable sanitary products, in particular to an elastic sheet and a manufacturing method thereof.
Background
At present, elastic non-woven fabrics have more applications, in particular to the field of disposable sanitary products, and the structure of the elastic non-woven fabrics is as follows: CN201210380277.2 discloses a composite elastic nonwoven fabric structure and a method for manufacturing the same, wherein the composite elastic nonwoven fabric structure comprises an elastic fabric layer and a nonwoven fabric layer. The non-woven fabric layer is integrated with the elastic fabric layer. And the manufacturing method of the composite elastic non-woven fabric comprises the following steps: providing an elastic fabric layer; combining a non-woven fabric layer and the elastic fabric layer into a whole; hot-pressing the non-woven fabric layer and the elastic fabric layer to make them flat; and cooling the non-woven fabric layer and the elastic fabric layer. By using the composite elastic non-woven fabric structure and the manufacturing method thereof of the invention, the properties of non-woven fabric such as tension, elastic force, tearing strength and elongation can be effectively increased.
In the field of existing disposable sanitary products, the application of the elastic material combined with the non-woven fabric is mainly applied to the waistline area of the paper diaper, in order to ventilate, the paper diaper is generally perforated, and holes of the elastic material are generally uniformly distributed, so that the balance between strength and ventilation is realized. However, for strength, the holes are usually not too dense, so that good ventilation is not achieved, and the comfort of wearing is slightly poor.
Disclosure of Invention
Therefore, in order to solve the above problems, the present invention provides an elastic sheet, which solves the technical problems that the existing elastic nonwoven fabric has insufficient air permeability and cannot form good comfort. A method of manufacturing an elastic sheet is also presented.
In order to achieve the purpose, the invention adopts the following technical scheme: an elastic sheet comprises an upper base material, a lower base material and an elastic film clamped between the upper base material and the lower base material, wherein the upper base material and the lower base material are breathable sheets, fastening points are fixedly formed between the upper base material, the elastic film and the lower base material through a plurality of connecting parts, each fastening point is distributed to form a plurality of partition lines, each partition line is arranged at intervals along the transverse direction, at least one cutting unit is arranged in each two adjacent partition lines, each cutting unit comprises an elongated upper cutting part arranged along the vertical direction, an elongated lower cutting part arranged along the vertical direction, a left cutting part arranged along the vertical direction and arranged at the left side of the upper cutting part, and a right cutting part arranged along the vertical direction and arranged at the right side of the lower cutting part, the left cutting part and the right cutting part are arranged along the vertical direction to form a long strip state, and the lengths of the left cutting part and the right cutting part are smaller than that of the upper cutting part or the lower cutting part, go up cutting portion, lower cutting portion, left cutting portion, right cutting portion and cut substrate, lower substrate and elastic membrane respectively, when last substrate, lower substrate are in straight state, the elastic membrane is in horizontal tensile state, and the elastic membrane lies in cutting portion, lower cutting portion, left cutting portion, right cutting portion department under tensile state and forms the bleeder vent, and the width of the horizontal direction of each bleeder vent is greater than the length of vertical direction, forms the platykurtic.
Furthermore, the number of the left cutting parts is more than two, and the more than two left cutting parts and the upper cutting part form a first oblique line.
Furthermore, the number of the right cutting parts is more than two, and the more than two right cutting parts and the lower cutting part form a second oblique line.
Furthermore, the number of the cutting units in two adjacent partition lines is three, and the connecting line of the lower ends of the lower cutting parts of the two adjacent cutting units is a first connecting line which is parallel to each partition line.
Furthermore, the included angle between the separation line and the horizontal plane is 25-35 degrees, and the distance between the first connecting line and the separation line is 2.2-2.7 mm.
Furthermore, the upper cutting part, the left cutting part, the lower cutting part and the right cutting part of the cutting unit form a rhombus.
Further, the upper cutting part or the lower cutting part or the left cutting part or the right cutting part is formed by ultrasonic welding, and the elastic film is penetrated to form the air holes during the ultrasonic welding.
A manufacturing method of elastic sheets based on the same inventive concept comprises the following steps:
firstly, unwinding an elastic film, passing through a slow driving roller and then passing through a fast driving roller to form differential conveying, so that the elastic film is stretched;
compounding an upper substrate and a lower substrate on the upper surface and the lower surface of the elastic membrane to form a sheet, and fixing the sheet by an ultrasonic device to ensure that the upper substrate, the elastic membrane and the lower substrate are connected to form fastening points, wherein each fastening point is distributed to form a plurality of partition lines, and each partition line is arranged at intervals along the transverse direction;
thirdly, rolling by an intermediate driving roller to realize leveling;
fourthly, cutting the sheet by using a cutting device to ensure that at least one cutting unit is arranged in two partition lines on the adjacent sheet, wherein each cutting unit comprises a long strip-shaped upper cutting part arranged along the vertical cutting, a long strip-shaped lower cutting part arranged along the vertical cutting, a left cutting part arranged on the left side of the upper cutting part along the vertical cutting, and a right cutting part arranged on the right side of the lower cutting part along the vertical cutting, the left cutting part and the right cutting part are arranged along the vertical cutting to form a long strip state, the lengths of the left cutting part and the right cutting part are smaller than that of the upper cutting part or the lower cutting part, and the upper cutting part, the lower cutting part, the left cutting part and the right cutting part respectively cut the upper base material, the lower base material and the elastic membrane;
and fifthly, the sheet passes through the tension buffer mechanism and then is driven to be output through the output driving roller.
Furthermore, in the fourth step, after the elastic membrane is cut, air holes are formed in the upper cutting part, the lower cutting part, the left cutting part and the right cutting part under the action of transverse pulling force, and the width of each air hole in the transverse direction is larger than the length of each air hole in the vertical direction, so that the elastic membrane is flat.
Furthermore, the upper substrate or the lower substrate is unreeled and then compounded with the elastic film after passing through the substrate tension caching mechanism, the substrate driving mechanism and the substrate deviation rectifying mechanism.
By adopting the technical scheme, the invention has the beneficial effects that:
separate into a plurality of district partition lines through the fastening point, the cutting element of at least one in two adjacent district partition lines can form a plurality of bleeder vents regions that have the wall like this, because the elastic film is in horizontal tensile state, can make the elastic film form the bleeder vent of platykurtic in last cutting portion, lower cutting portion, left cutting portion, right cutting portion department moreover, this kind of bleeder vent can form the platykurtic because tensile state, its size often is relevant with vertical cutting length. The vertical length of the upper cutting part and the lower cutting part is generally set to be 1.5-5 mm, the vertical length of the left cutting part and the right cutting part is generally set to be 0.5-2 mm, and the ratio of the upper cutting part or the lower cutting part to the left cutting part or the right cutting part is generally 2-3: 1. as for the widths of the upper cutting part, the lower cutting part, the left cutting part and the right cutting part, the smaller the width is, the better the width is, the forming mode can adopt cutting or other means, adopt an ultrasonic welding mode, realize penetration and form better forming. Adopt ultrasonic bonding back, also can make upper non-woven fabrics, lower floor's non-woven fabrics can form the bonding, also form the welding hole in the position department of last cutting part, lower cutting part, left cutting part, right cutting part, the bleeder vent can expand in this position like this to can make ventilative effect better. Furthermore, the number of the left cutting part and the right cutting part of each cutting unit is two, and the vent holes in the upper cutting part, the lower cutting part, the left cutting part and the right cutting part form a good ventilation structure. Furthermore, the arrangement of the first oblique line and the second oblique line can form a better arrangement mode, and better arrangement of the cutting units is realized, so that effective ventilation is realized. Furthermore, the partition line is inclined, so that a better distribution effect can be formed, and better stability can be realized through the inclined limitation in the transverse stretching process. Through the parallelism of the first connecting line and the separating line, each air hole can present a better stretching state. By the arrangement, the stretching forming of each air hole can be effectively controlled. The included angle between the partition line and the horizontal plane is 25-35 degrees, the distance between the first connecting line and the nearest partition line is 2.2-2.7mm, and the numerical setting is a better range and can form reasonable interval distribution. The upper cutting part, the left cutting part, the lower cutting part and the right cutting part of one cutting unit form a rhombus, and the effective distribution is also realized. The upper base material and the lower base material are made of non-woven fabrics and matched with the elastic membrane, so that a better ventilation effect can be realized, and the elastic membrane has good elastic expansion performance. Since it is a disposable sanitary article, the requirement for life is not high, and the destructive operation of cutting the elastic film does not create a bad condition.
The manufacturing method of the elastic sheet based on the same invention concept adopts the ultrasonic welding device to fix the upper base material, the elastic film and the lower base material, and realizes the cutting of the sheet through the cutting device, thereby realizing the formation of the cutting unit and realizing the formation of the elastic sheet with better air permeability and elastic expansion performance.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;
FIG. 3 is a display state diagram of FIG. 1;
FIG. 4 is a reference diagram of the present invention;
fig. 5 is a schematic configuration diagram of an apparatus for manufacturing an elastic sheet according to the present invention.
Detailed Description
The invention will now be further described with reference to the accompanying drawings and detailed description.
Referring to fig. 1 to 4, the present embodiment provides an elastic sheet, which includes an upper substrate 1, a lower substrate 2 and an elastic film 3 sandwiched between the upper substrate 1 and the lower substrate 2, wherein the upper substrate 1 and the lower substrate 2 are breathable sheets, and a nonwoven material is selected in the present embodiment. The upper substrate 1, the elastic membrane 3 and the lower substrate 2 are fixedly connected through a plurality of connecting parts to form fastening points 4, each fastening point 4 is distributed to form a plurality of partition lines F, each partition line F is arranged along the transverse direction at intervals, two adjacent partition lines F form a partition area 5, at least one cutting unit 6 is arranged in each two adjacent partition lines, each cutting unit 6 comprises an elongated upper cutting part 61 arranged along the vertical direction in a cutting mode, an elongated lower cutting part 62 arranged along the vertical direction in a cutting mode, a left cutting part 63 arranged along the vertical direction on the left side of the upper cutting part 61 and a right cutting part 64 arranged along the vertical direction on the right side of the lower cutting part 62, the left cutting part 63 and the right cutting part 64 are arranged along the vertical direction to form a long strip state, the lengths of the left cutting part 63 and the right cutting part 64 are smaller than that of the upper cutting part 61 or the lower cutting part 62, and the upper cutting part 61, the lower cutting part 62 and the upper cutting part 61 and the lower cutting part 64, The left cutting part 63 and the right cutting part 64 respectively cut the upper layer non-woven fabric 1, the lower layer non-woven fabric 2 and the elastic film 3, and when the upper layer non-woven fabric 1 and the lower layer non-woven fabric 2 are in a flat state, the elastic film 3 is in a transverse stretching state.
The elastic film 3 is positioned at the upper cutting part 61, the lower cutting part 62, the left cutting part 63 and the right cutting part 64 in a stretching state to form flat air holes 7.
In the vertical direction, the ventilation holes formed by the left and right cutting portions 63 and 64 are respectively located between the ventilation holes formed by the upper and lower cutting portions 61 and 62. The left cutting portions 63 are more than two, and the two left cutting portions 63 and the upper cutting portion 61 form a first oblique line D. The number of the right cutting portions 64 is two or more, and the two right cutting portions 64 and the lower cutting portion 62 form a second oblique line E. The first oblique line D is parallel to the second oblique line E, which can form a better and more uniform shape. The connecting line of the lower ends of the lower cutting portions 62 of two adjacent cutting units 6 is a first connecting line G, and the first connecting line G is parallel to each partition line F. And the included angle C between the separation line F and the horizontal plane is 25-35 degrees. The distance between the first connecting line G and the nearest separation line F is 2.2-2.7 mm. The upper cutting portion 61, the left cutting portion 63, the lower cutting portion 62, and the right cutting portion 64 of one cutting unit 6 form a rhombus H. The length of fastening point 4 along longitudinal direction is greater than along transverse direction's length, and the ratio is 2 ~ 3: 1.
in this embodiment, the upper cutting part 61, the lower cutting part 62, the left cutting part 63, and the right cutting part 64 are formed by ultrasonic welding, and the vent holes are formed at the elastic film, and the upper layer nonwoven fabric and the lower layer nonwoven fabric are bonded, and a vent through hole 8 is formed at the bonded portion. In this embodiment, the upper cutting portion 61, the lower cutting portion 62, the left cutting portion 63, and the right cutting portion 64 may be formed by cutting with a blade. The stretch ratio of the elastic film is usually 1.5 to 4, but it may be larger or smaller, and the thickness of the elastic film is selected from 0.2 to 1 mm.
A manufacturing method of elastic sheets based on the same inventive concept comprises the following steps:
firstly, unwinding an elastic film, passing through a slow driving roller and then passing through a fast driving roller to form differential conveying, so that the elastic film is stretched;
compounding an upper substrate and a lower substrate on the upper surface and the lower surface of the elastic membrane to form a sheet, and fixing the sheet by an ultrasonic device to ensure that the upper substrate, the elastic membrane and the lower substrate are connected to form fastening points, wherein each fastening point is distributed to form a plurality of partition lines, and each partition line is arranged at intervals along the transverse direction;
thirdly, rolling by an intermediate driving roller to realize leveling;
fourthly, cutting the sheet by using a cutting device to ensure that at least one cutting unit is arranged in two partition lines on the adjacent sheet, each cutting unit comprises a strip-shaped upper cutting part arranged along the vertical cutting, a strip-shaped lower cutting part arranged along the vertical cutting, a left cutting part arranged along the vertical cutting and positioned at the left side of the upper cutting part and a right cutting part arranged along the vertical cutting and positioned at the right side of the lower cutting part, the left cutting part and the right cutting part are arranged along the vertical cutting to form a strip-shaped state, the lengths of the left cutting part and the right cutting part are smaller than that of the upper cutting part or the lower cutting part, the upper cutting part, the lower cutting part, the left cutting part and the right cutting part respectively cut an upper base material, a lower base material and an elastic membrane, and vent holes are formed at the upper cutting part, the lower cutting part, the left cutting part and the right cutting part under the action of transverse pulling force after the elastic membrane is cut, the width of each air hole in the transverse direction is greater than the length of each air hole in the vertical direction, so that the air holes are flat;
and fifthly, the sheet passes through a tension buffer mechanism and then is driven to be output through an output driving roller.
After the upper substrate or the lower substrate is unreeled, the upper substrate or the lower substrate is compounded with the elastic film through the substrate tension caching mechanism, the substrate driving mechanism and the substrate deviation rectifying mechanism.
Referring to fig. 5, the present disclosure further discloses a manufacturing apparatus for an elastic sheet for implementing the above process, including a frame 1, and an elastic film unwinding mechanism 91, a slow driving roller 92, a fast driving roller 93, a compound station 94, an ultrasonic device 95, a middle driving roller 96, a cutting device 97, a tension buffer mechanism 98, and an output driving roller 99, which are disposed on the frame according to a production line, where the frame is located at the compound station 94, and an upper substrate conveying mechanism and a lower substrate conveying mechanism are connected, so that the composition of an upper substrate, an elastic film, and a lower substrate can be implemented, the upper substrate conveying mechanism includes an upper substrate unwinding mechanism 910, an upper substrate buffer mechanism 911, an upper substrate driving roller 912, and an upper substrate deviation-correcting mechanism 913, and the lower substrate conveying mechanism includes a lower substrate unwinding mechanism 914, a lower substrate buffer mechanism 915, a lower substrate driving roller 916, and a lower substrate deviation-correcting mechanism 917.
The above mechanisms are all conventional in the art, and specific structures are disclosed, and reference may be made to related patents of the applicant, and only the ultrasonic device 95 and the cutting device 97 need to have a specific point location arrangement. The cutting device 97 may adopt an ultrasonic mechanism, and when the ultrasonic mechanism is adopted, it may form a plurality of cutting units on the sheet at one time, and as shown in fig. 3, a plurality of cutting units in a cutting area between two adjacent dividing lines form the most basic welding unit. In addition, an upper cutting roller can be matched with a lower bottom roller. The arrangement of the cutting edge on the upper cutting roll, as also shown in fig. 3, forms a standard cutting unit with a plurality of cutting units in the cutting area between two adjacent dividing lines, and the standard cutting units are uniformly distributed on the roll surface of the upper cutting roll.
The invention has the beneficial effects that:
separate into a plurality of district partition lines through the fastening point, the cutting element of at least one in two adjacent district partition lines can form a plurality of bleeder vents regions that have the wall like this, because the elastic film is in horizontal tensile state, can make the elastic film form the bleeder vent of platykurtic in last cutting portion, lower cutting portion, left cutting portion, right cutting portion department moreover, this kind of bleeder vent can form the platykurtic because tensile state, its size often is relevant with vertical cutting length. The vertical length of the upper cutting part and the lower cutting part is generally set to be 1.5-5 mm, the vertical length of the left cutting part and the right cutting part is generally set to be 0.5-2 mm, and the ratio of the upper cutting part or the lower cutting part to the left cutting part or the right cutting part is generally 2-3: 1. as for the widths of the upper cutting part, the lower cutting part, the left cutting part and the right cutting part, the smaller the width is, the better the width is, the forming mode can adopt cutting or other means, adopt an ultrasonic welding mode, realize penetration and form better forming. Adopt ultrasonic bonding back, also can make upper non-woven fabrics, lower floor's non-woven fabrics can form the bonding, also form the welding hole in the position department of last cutting part, lower cutting part, left cutting part, right cutting part, the bleeder vent can expand in this position like this to can make ventilative effect better. Furthermore, the number of the left cutting part and the right cutting part of each cutting unit is two, and the vent holes in the upper cutting part, the lower cutting part, the left cutting part and the right cutting part form a good ventilation structure. Furthermore, the arrangement of the first oblique line and the second oblique line can form a better arrangement mode, and better arrangement of the cutting units is realized, so that effective ventilation is realized. Furthermore, the partition line is inclined, so that a better distribution effect can be formed, and better stability can be realized through the inclined limitation in the transverse stretching process. Through the parallelism of the first connecting line and the separating line, each air hole can present a better stretching state. By the arrangement, the stretching forming of each air hole can be effectively controlled. The included angle between the partition line and the horizontal plane is 25-35 degrees, the distance between the first connecting line and the nearest partition line is 2.2-2.7mm, and the numerical setting is a better range and can form reasonable interval distribution. The upper cutting part, the left cutting part, the lower cutting part and the right cutting part of one cutting unit form a rhombus, and the effective distribution is also realized. The upper base material and the lower base material are made of non-woven fabrics and matched with the elastic membrane, so that a better ventilation effect can be realized, and the elastic membrane has good elastic expansion performance. Since it is a disposable sanitary article, the life requirement is not high, and the destructive operation of cutting the elastic film does not create a bad condition.
The manufacturing method of the elastic sheet based on the same invention concept adopts the ultrasonic welding device to fix the upper base material, the elastic film and the lower base material, and realizes the cutting of the sheet through the cutting device, thereby realizing the formation of the cutting unit and realizing the formation of the elastic sheet with better air permeability and elastic expansion performance.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. An elastic sheet material, includes last substrate, lower substrate and centre gripping in last substrate and the elastic membrane between the substrate down, go up the substrate, lower substrate is the gas permeability sheet material, its characterized in that: the upper base material, the elastic membrane and the lower base material are fixedly connected through a plurality of connecting parts to form fastening points, each fastening point is distributed to form a plurality of partition lines, each partition line is arranged at intervals along the transverse direction, at least one cutting unit is arranged in every two adjacent partition lines, each cutting unit comprises an upper cutting part which is arranged along the vertical direction and is long in strip shape, a lower cutting part which is arranged along the vertical direction and is long in strip shape, a left cutting part which is arranged along the vertical direction and is positioned on the left side of the upper cutting part, and a right cutting part which is arranged along the vertical direction and is positioned on the right side of the lower cutting part, the left cutting part and the right cutting part are arranged along the vertical direction to form a strip shape, the lengths of the left cutting part and the right cutting part are smaller than that of the upper cutting part or the lower cutting part, the upper cutting part, the lower cutting part, the left cutting part and the right cutting part respectively cut the upper base material, the lower base material and the elastic membrane, and the upper cutting part, the lower cutting part and the elastic membrane, Left side cutting portion, right side cutting portion are formed through ultrasonic bonding, and when last substrate, lower substrate were in the straight state, the elastic membrane was in horizontal tensile state, and the elastic membrane was located cutting portion, lower cutting portion, left side cutting portion, right side cutting portion department under the tensile state and formed the bleeder vent through ultrasonic bonding, formed the bonding at last substrate and lower substrate to a ventilative through-hole has been formed at the bonding site, the width of the transverse direction of each bleeder vent is greater than vertical direction's length, forms the platykurtic, left side cutting portion is more than two, and more than two left cutting portions and last cutting portion form a oblique first slash, right side cutting portion is more than two, and more than two right cutting portions and lower cutting portion form a oblique second slash.
2. An elastic sheet material according to claim 1, wherein: the number of the cutting units in the two adjacent partition lines is three, the connecting line of the lower ends of the lower cutting parts of the two adjacent cutting units is a first connecting line, and the first connecting line is parallel to each partition line.
3. An elastic sheet material according to claim 2, wherein: the included angle between the separation line and the horizontal plane is 25-35 degrees, and the distance between the first connecting line and the separation line is 2.2-2.7 mm.
4. An elastic sheet material according to claim 2, wherein: the upper cutting part, the left cutting part, the lower cutting part and the right cutting part of the cutting unit form a rhombus.
5. A method of manufacturing an elastic sheet material according to any one of claims 1 to 4, comprising the steps of:
firstly, unwinding an elastic film, passing through a slow driving roller and then passing through a fast driving roller to form differential conveying, so that the elastic film is stretched;
compounding an upper substrate and a lower substrate on the upper surface and the lower surface of the elastic membrane to form a sheet, and fixing the sheet by an ultrasonic device to ensure that the upper substrate, the elastic membrane and the lower substrate are connected to form fastening points, wherein each fastening point is distributed to form a plurality of partition lines, and each partition line is arranged at intervals along the transverse direction;
thirdly, rolling by an intermediate driving roller to realize leveling;
fourthly, cutting the sheet by using a cutting device to ensure that at least one cutting unit is arranged in two partition lines on the adjacent sheet, wherein each cutting unit comprises an elongated upper cutting part arranged along the vertical cutting, an elongated lower cutting part arranged along the vertical cutting, a left cutting part arranged on the left side of the upper cutting part along the vertical cutting, and a right cutting part arranged on the right side of the lower cutting part along the vertical cutting, the left cutting part and the right cutting part are arranged along the vertical cutting to form a long strip state, the lengths of the left cutting part and the right cutting part are smaller than that of the upper cutting part or the lower cutting part, and the upper cutting part, the lower cutting part, the left cutting part and the right cutting part respectively cut the upper substrate, the lower substrate and the elastic membrane;
and fifthly, the sheet passes through the tension buffer mechanism and then is driven to be output through the output driving roller.
6. The method for manufacturing an elastic sheet material according to claim 5, wherein: and fourthly, after the elastic membrane is cut, forming air holes at the upper cutting part, the lower cutting part, the left cutting part and the right cutting part under the action of transverse tension, wherein the width of each air hole in the transverse direction is greater than the length of each air hole in the vertical direction, and the air holes are flat.
7. A method of manufacturing an elastic sheet material according to claim 5, wherein: after the upper substrate or the lower substrate is unreeled, the upper substrate or the lower substrate is compounded with the elastic film through the substrate tension caching mechanism, the substrate driving mechanism and the substrate deviation rectifying mechanism.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110980709.2A CN113665184B (en) | 2021-08-25 | 2021-08-25 | Elastic sheet and manufacturing method thereof |
| PCT/CN2021/118110 WO2023024183A1 (en) | 2021-08-25 | 2021-09-14 | Elastic sheet and manufacturing method therefor |
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| CN202110980709.2A CN113665184B (en) | 2021-08-25 | 2021-08-25 | Elastic sheet and manufacturing method thereof |
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| CN113665184A CN113665184A (en) | 2021-11-19 |
| CN113665184B true CN113665184B (en) | 2022-08-16 |
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| JP5523147B2 (en) * | 2010-03-03 | 2014-06-18 | 花王株式会社 | Manufacturing method of composite elastic sheet |
| BR112017016325B1 (en) * | 2015-01-30 | 2023-02-28 | Daio Paper Corporation | ABSORBENT ARTICLE AND MANUFACTURING METHOD |
| KR101721123B1 (en) * | 2015-09-17 | 2017-03-29 | 이진재 | Apparatus for manufacturing disposable sanitary gloves |
| CN106913420B (en) * | 2016-08-18 | 2019-11-08 | 黄山富田精工制造有限公司 | A kind of processing method of elastic waistline sheet material |
| JP6240733B1 (en) * | 2016-09-30 | 2017-11-29 | 大王製紙株式会社 | Disposable wearing article and manufacturing method thereof |
| US20210069028A1 (en) * | 2017-08-31 | 2021-03-11 | Kimberly-Clark Worldwide, Inc. | Composite elastic laminate having discrete film segments |
| EP3689309B1 (en) * | 2017-09-27 | 2023-04-19 | Daio Paper Corporation | Stretchable member and disposable article for wearing having stretchable member |
| JP6495507B1 (en) * | 2018-03-27 | 2019-04-03 | 大王製紙株式会社 | Stretchable structure of disposable wearing article, and pants-type disposable wearing article having the stretchable structure |
| CN110588107A (en) * | 2018-05-25 | 2019-12-20 | 郑元隆 | Multi-layer elastic air-permeable material structure |
| CN209832865U (en) * | 2019-04-15 | 2019-12-24 | 佛山市甘澍弹性材料科技有限公司 | Production device of longitudinal elastic composite non-woven fabric |
| CN111823684A (en) * | 2019-04-15 | 2020-10-27 | 佛山市甘澍弹性材料科技有限公司 | Production device of longitudinal elastic composite non-woven fabric |
| CN113017991A (en) * | 2021-03-03 | 2021-06-25 | 泉州市汉威机械制造有限公司 | Novel elastic waistline non-woven fabric and forming process thereof |
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| CN113665184A (en) | 2021-11-19 |
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