CN116876233A - Preparation method of magic hook and magic hook - Google Patents
Preparation method of magic hook and magic hook Download PDFInfo
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- CN116876233A CN116876233A CN202310866914.5A CN202310866914A CN116876233A CN 116876233 A CN116876233 A CN 116876233A CN 202310866914 A CN202310866914 A CN 202310866914A CN 116876233 A CN116876233 A CN 116876233A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 229920002635 polyurethane Polymers 0.000 claims abstract description 62
- 239000004814 polyurethane Substances 0.000 claims abstract description 62
- 239000012943 hotmelt Substances 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 33
- 239000002002 slurry Substances 0.000 claims abstract description 33
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 claims abstract description 25
- 239000000758 substrate Substances 0.000 claims abstract description 25
- 238000007756 gravure coating Methods 0.000 claims abstract description 24
- 239000004677 Nylon Substances 0.000 claims abstract description 22
- 229920001778 nylon Polymers 0.000 claims abstract description 22
- 238000000576 coating method Methods 0.000 claims abstract description 20
- 239000011248 coating agent Substances 0.000 claims abstract description 19
- 241000482237 Senegalia mellifera Species 0.000 claims abstract description 16
- 230000008569 process Effects 0.000 claims abstract description 15
- 238000009987 spinning Methods 0.000 claims abstract description 7
- 238000007645 offset printing Methods 0.000 claims abstract description 5
- 239000011265 semifinished product Substances 0.000 claims description 19
- 238000007493 shaping process Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 239000000839 emulsion Substances 0.000 claims description 7
- 210000002268 wool Anatomy 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000007790 scraping Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims 2
- 238000009941 weaving Methods 0.000 claims 1
- 238000001746 injection moulding Methods 0.000 description 9
- 238000012545 processing Methods 0.000 description 8
- 229920003225 polyurethane elastomer Polymers 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 210000004177 elastic tissue Anatomy 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B18/00—Fasteners of the touch-and-close type; Making such fasteners
- A44B18/0046—Fasteners made integrally of plastics
- A44B18/0053—Fasteners made integrally of plastics in which each part has similar elements
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0011—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using non-woven fabrics
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
- D06N3/0034—Polyamide fibres
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/004—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using flocked webs or pile fabrics upon which a resin is applied; Teasing, raising web before resin application
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
Abstract
The application relates to the field of magic hooks, in particular to a preparation method of a magic hook and the magic hook, which comprises the following steps: providing aqueous polyurethane slurry and nylon non-woven fabrics, wherein the nylon non-woven fabrics are used as diaphragm base materials of hook surfaces, and the aqueous polyurethane slurry is used as hook part base materials of the hook surfaces; providing a gravure structure and a continuous hot-melt offset printing pattern coating machine, wherein the gravure structure is provided with grooves for forming hook thorns of magic hooks, the grooves are of a multi-row T-shaped or multi-row inverted triangle conical structure, and each row is arranged in a staggered manner; combining the gravure structure to a heated roll of a continuous hot melt offset pattern coater; coating the hot-melt aqueous polyurethane slurry on the surface of a diaphragm substrate through a gravure coating process and forming a polyurethane elastic part on the surface of the diaphragm substrate, wherein the polyurethane elastic part comprises a hook thorn of a hook surface so as to obtain the hook surface; the annular plush structure is made on the surface of the flexible PET non-woven fabric through a spinning method so as to manufacture and obtain the plush surface, and the annular plush structure can be continuously processed and produced, so that the production efficiency is improved.
Description
Technical Field
The application relates to the technical field of magic hooks, in particular to a preparation method of a magic hook and the magic hook.
Background
The magic hook is a common connecting auxiliary material and is divided into a male side and a female side. Wherein the male surface is a fine soft pile loop, the female surface is elastic fiber with hook thorns, and the male surface and the female surface can be mutually bonded or separated.
The male surface and the female surface are buckled and pressed mutually to realize connection; then under the condition of a certain transverse force, the elastic thorns of the female face are straightened, and the thorns of the female face are loosened from the fine soft velvet ring of the male face to be opened, so that the male face and the female face are separated; then the hook thorns of the mother surface restore the original hook shape.
However, most of the hooks used at present are made of polymer and nylon materials by injection molding. The hook thorns of the mother surface are made of softer materials, and the mother surface is ultrathin and can be matched with various sticking buckle soft materials for use. The magic hook formed by injection molding has the problems of incapability of continuous processing and production and low production efficiency.
Therefore, it is needed to provide a method for manufacturing a hook and a hook outside an injection molding process, so as to solve the problem that the hook formed by injection molding cannot be continuously processed and produced, and improve the production efficiency.
Disclosure of Invention
Based on the above, it is necessary to provide a preparation method of a hook and a hook for solving the problem that the hook formed by injection molding cannot be continuously processed and produced, and improving the production efficiency.
The first aspect of the application provides a method for preparing a magic hook, wherein the magic hook comprises a hook surface and a rough surface, and the method comprises the following steps:
providing aqueous polyurethane slurry and nylon non-woven fabrics, wherein the nylon non-woven fabrics are used as diaphragm base materials of the hook surfaces, and the aqueous polyurethane slurry is a hook base material of the hook surfaces;
providing a gravure structure and a continuous hot-melt offset printing pattern coating machine, wherein the gravure structure is provided with grooves for forming hook thorns of magic hooks, the grooves are of a multi-row T-shaped or multi-row inverted triangle conical structure, and each row is arranged in a staggered manner;
combining the gravure structure onto a heated roll of a continuous hot melt offset pattern coater;
coating the hot-melt aqueous polyurethane slurry on the surface of the diaphragm substrate through a gravure coating process and forming a polyurethane elastic part on the surface of the diaphragm substrate, wherein the polyurethane elastic part comprises a hook of a hook surface so as to obtain the hook surface;
and (3) making an annular plush structure on the surface of the flexible PET non-woven fabric by a spinning method so as to manufacture and obtain a plush surface.
In some embodiments, the intaglio structure is further provided with a groove for forming a hot-melt protrusion of the hook, and the polyurethane elastic part further comprises a hot-melt protrusion configured to be fixed in a slot hole to be assembled by hot-melt deformation.
In some embodiments, the aqueous polyurethane slurry is a hot-melt aqueous polyurethane emulsion, the hot-melt aqueous polyurethane emulsion is a milky white translucent liquid and has a solid content of 32+ -5%, a pH of 6-8, and a viscosity of greater than 300 mPa.S.
In some embodiments, the coating speed in the gravure coating process is 1-2m/min, the maximum coating speed is 4.5m/min, and the maximum operating temperature is 200 ℃.
In some embodiments, the nylon nonwoven has a thickness of 0.3 to 1.5mm.
In some embodiments, the applying the hot-melt treated aqueous polyurethane slurry to the surface of the separator substrate by a gravure coating process to form a polyurethane elastic part on the surface of the separator substrate includes the steps of:
carrying out the water-soluble polyurethane slurry from the slurry box by a hot roller combined with a gravure structure;
scraping off redundant water-soluble polyurethane slurry on the hot roller by using a thickness-fixing scraper;
coating the water-soluble polyurethane slurry carried out on the hot roller onto the surface of the diaphragm substrate under the action of pressure;
curing the diaphragm base material and uncured aqueous polyurethane, and stripping after curing to obtain a semi-finished product, wherein the semi-finished product is provided with a semi-finished product hook head formed preliminarily;
and shaping the semi-finished product by continuously heating hot air, so that the semi-finished product hook head is naturally bent, and a hook surface is obtained after shaping.
In some embodiments, the curing temperature employed in the step of curing the separator substrate in combination with the uncured aqueous polyurethane is from 80 to 100 ℃.
In some embodiments, the shaping the semi-finished product by continuously heating with hot air, and the step of naturally bending the semi-finished product hook head includes:
the heating temperature of the hot air is kept between 110 and 150 ℃ continuously, so that the bending angle of the semi-finished hook after shaping is 0 to 45 degrees.
In some embodiments, the matte has a thickness of 0.8mm to 6.8mm and an elongation of 40% to 80% with a grammage of 40 to 100g/m.
A second aspect of the present application provides a hook comprising:
the hook surface comprises a diaphragm base material and a hook thorn formed on the diaphragm base material by a gravure coating process, wherein the diaphragm base material is made of nylon non-woven fabrics, and the hook thorn is made of water-soluble polyurethane;
the wool surface is a flexible PET non-woven fabric, and the surface of the flexible PET non-woven fabric is provided with an annular wool structure made by a spinning method.
The application has the beneficial effects that:
the preparation method of the magic hook comprises the following steps: providing aqueous polyurethane slurry and nylon non-woven fabrics, wherein the nylon non-woven fabrics are used as diaphragm base materials of hook surfaces, and the aqueous polyurethane slurry is used as hook part base materials of the hook surfaces; providing a gravure structure and a continuous hot-melt offset printing pattern coating machine, wherein the gravure structure is provided with grooves for forming hook thorns of magic hooks, the grooves are of a multi-row T-shaped or multi-row inverted triangle conical structure, and each row is arranged in a staggered manner; combining the gravure structure to a heated roll of a continuous hot melt offset pattern coater; coating the hot-melt aqueous polyurethane slurry on the surface of a diaphragm substrate through a gravure coating process and forming a polyurethane elastic part on the surface of the diaphragm substrate, wherein the polyurethane elastic part comprises a hook thorn of a hook surface so as to obtain the hook surface; and (3) making an annular plush structure on the surface of the flexible PET non-woven fabric by a spinning method so as to manufacture and obtain a plush surface. The hook surface of the application adopts the gravure coating method, and the gravure coating method is different from the traditional injection molding method in that the gravure coating can adapt to the size requirements of different widths and lengths, is not fixed singly and is more flexible. The gravure coating has the advantages of high processing speed and precision, mature process, relatively simple processing and maintenance of the hot roller, low cost, repeated utilization, continuous processing and production improvement of production efficiency. In addition, the diaphragm base material is nylon non-woven fabrics, and the thorns are polyurethane elastomers, so that the softness of the hook surface can be improved by combining the nylon non-woven fabrics and the polyurethane elastomers, the adhesion and the durability are effectively improved, and further, the high-strength and soft magic hook can be produced.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only one embodiment of the application, and that other embodiments of the drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of hook surface and rough surface structure of a hook according to an embodiment of the present application;
fig. 2 is a schematic flow chart of a preparation method of a hook according to an embodiment of the present application.
Reference numerals:
1. a hook surface; 11. a separator substrate; 12. hooking; 13. a hot melt stud; 2. a rough surface; 21. annular plush structure.
Detailed Description
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "", "second" 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 defining "", "second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a feature "up" or "down" on a second feature may be in direct contact with that second feature or in indirect contact with that second feature via an intervening medium. Moreover, features "above", "over" and "on" a second feature may be features directly above or obliquely above the second feature, or simply indicate that the feature level is higher than the second feature. Features "under", "below" and "beneath" a second feature may be features directly under or obliquely under the second feature, or simply mean that the feature level is less than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Most of the magic hooks used at present are made of polymer and nylon raw materials through an injection molding process. The hook thorn 12 of the mother surface is made of a softer material, and the mother surface is ultrathin and can be matched with various thread gluing soft materials, in particular thread gluing cloth, namely a male surface. The magic hook formed by injection molding has the problems of incapability of continuous processing and production and low production efficiency.
Referring to fig. 1-2, an embodiment of the present application provides a method for manufacturing a hook, which includes a hook surface 1 and a burr surface 2, comprising the steps of:
providing aqueous polyurethane slurry and nylon non-woven fabrics, wherein the nylon non-woven fabrics are used as a diaphragm substrate 11 of the hook surface 1, and the aqueous polyurethane slurry is used as a hook part substrate of the hook surface 1;
providing a gravure structure and a continuous hot-melt offset printing pattern coating machine, wherein the gravure structure is provided with grooves for forming hook thorns 12 of magic hooks, the grooves are of a multi-row T-shaped or multi-row inverted triangle conical structure, and each row is arranged in a staggered manner;
combining the gravure structure onto a heated roll of a continuous hot melt offset pattern coater;
coating the hot-melt aqueous polyurethane slurry on the surface of the diaphragm substrate 11 through a gravure coating process and forming a polyurethane elastic part on the surface of the diaphragm substrate 11, wherein the polyurethane elastic part comprises a hook 12 of the hook surface 1 so as to obtain the hook surface 1;
an annular plush structure 21 is made on the surface of the flexible PET nonwoven fabric by a spinning method to make and obtain a fleece surface 2.
In the embodiment, the hook surface 1 is prepared by adopting a gravure coating method, and the gravure coating method is different from the traditional injection molding method in that the gravure coating method can adapt to the size requirements of different widths and lengths, is not fixed singly and is more flexible. The gravure coating has the advantages of high processing speed and precision, mature process, relatively simple processing and maintenance of the hot roller, low cost, repeated utilization, continuous processing and production improvement of production efficiency. In addition, the diaphragm base material 11 is nylon non-woven fabrics, the hook thorns 12 are polyurethane elastomers, and the combination of the nylon non-woven fabrics and the polyurethane elastomers can improve the softness of the hook surface 1, effectively improve the adhesion and the durability, and further can produce a high-strength and soft magic hook.
Referring to fig. 1-2, in some embodiments, the intaglio structure is further provided with a groove for forming a hot-melt protrusion 13 of the hook, and the polyurethane elastic part further includes the hot-melt protrusion 13, and the hot-melt protrusion 13 is configured to be fixed in a slot hole to be assembled by hot-melt deformation. The hot melting method is adopted, no adhesive, solvent or filler is required to be added, and no additional fastener is required; the structure is simple, and the heating is local, so that other parts can not be damaged by the heating; the production efficiency is high, and a plurality of hot-melt convex columns 13 or the assembly of a plurality of parts can be simultaneously hot-melted, so that the device is suitable for mass production with low cost; the hot melting process has the advantages of no vibration, no pollution, no noise, environmental protection, energy saving, rapidness and high efficiency.
In some embodiments, the aqueous polyurethane slurry is a hot-melt aqueous polyurethane emulsion, the hot-melt aqueous polyurethane emulsion is a milky semitransparent liquid, the solid content is 32+/-5%, the PH value is 6-8, the viscosity is more than 300 mPa.S, and the softness, the elasticity and the service life of the hot-melt aqueous polyurethane emulsion can be better ensured.
In some embodiments, the coating speed in the gravure coating process is 1-2m/min, the maximum coating speed is 4.5m/min, and the maximum operating temperature is 200 ℃, so that gravure coating can be realized more uniformly and stably.
In some embodiments, the nylon nonwoven has a thickness of 0.3-1.5mm and a moderate thickness, which ensures good flexibility and lower cost.
Referring to fig. 1-2, in some embodiments, applying the hot-melt treated aqueous polyurethane slurry to the surface of the separator substrate 11 by a gravure coating process to form polyurethane elastic parts on the surface of the separator substrate 11 includes the steps of:
carrying out the water-soluble polyurethane slurry from the slurry box by a hot roller combined with a gravure structure; scraping off redundant water-soluble polyurethane slurry on the hot roller by using a thickness-fixing scraper; coating the water-soluble polyurethane slurry carried out on the hot roller onto the surface of the diaphragm substrate 11 under the action of pressure; curing the diaphragm base material 11 and uncured aqueous polyurethane, and stripping after curing to take out a semi-finished product, wherein the semi-finished product is provided with a semi-finished product hook head formed preliminarily; shaping the semi-finished product by continuously heating hot air to naturally bend the semi-finished product hook head, and obtaining the hook surface 1 after shaping.
The gravure coating step can further ensure that the hooking thorns 12 of the hooking surface 1 prepared by the gravure coating have better flexibility and quality.
Still further, in some embodiments, the curing temperature employed in the step of curing the separator substrate 11 in combination with the uncured aqueous polyurethane is 80-100 ℃ to ensure that the curing proceeds smoothly.
Referring to fig. 1-2, in some embodiments, the step of shaping the semi-finished product by continuously heating with hot air to naturally bend the semi-finished hook head includes: the heating temperature of the hot air is kept between 110 and 150 ℃ continuously, so that the bending angle of the semi-finished hook after shaping is 0 to 45 degrees, and the hook surface 1 with excellent bending angle can be obtained.
In addition, in some embodiments, the thickness of the matted surface 2 is 0.8mm-6.8mm, the extensibility is 40% -80%, and the gram weight is 40-100g/m, so that good softness of the matted surface 2 can be ensured.
Referring to fig. 1-2, based on the above-mentioned method for manufacturing the hook, the embodiment of the application further provides a hook, which includes a hook surface 1 and a rough surface 2. The hook surface 1 comprises a diaphragm base material 11 and a hook thorn 12 formed on the diaphragm base material 11 by a gravure coating process, wherein the diaphragm base material 11 is made of nylon non-woven fabric, and the hook thorn 12 is made of water-soluble polyurethane; the wool surface 2 is a flexible PET non-woven fabric, and the surface of the flexible PET non-woven fabric is provided with a ring-shaped wool structure 21 made by a spinning method.
Further, based on any one of the embodiments of the preparation method of the hook, the application further provides a corresponding improved hook, and the performance and structure of the hook are not repeated.
Finally, it should be noted that, in order to simplify the description, all possible combinations of the technical features of the above embodiments may be arbitrarily combined, however, as long as there is no contradiction between the combinations of the technical features, the description should be considered as the scope of the description.
The above examples illustrate only one embodiment of the application, which is described in more detail and is not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.
Claims (10)
1. The preparation method of the magic hook comprises a hook surface (1) and a rough surface (2), and is characterized by comprising the following steps:
providing aqueous polyurethane slurry and nylon non-woven fabric, wherein the nylon non-woven fabric is used as a diaphragm base material (11) of the hook surface (1), and the aqueous polyurethane slurry is a hook base material of the hook surface (1);
providing a gravure structure and a continuous hot-melt offset printing pattern coating machine, wherein the gravure structure is provided with grooves for forming hook thorns (12) of magic hooks, the grooves are of a multi-row T-shaped or multi-row inverted triangle conical structure, and each row is arranged in a staggered manner;
combining the gravure structure onto a heated roll of a continuous hot melt offset pattern coater;
coating the hot-melt aqueous polyurethane slurry on the surface of the diaphragm substrate (11) through a gravure coating process and forming a polyurethane elastic part on the surface of the diaphragm substrate (11), wherein the polyurethane elastic part comprises a hook (12) of a hook surface (1) so as to obtain the hook surface (1);
an annular plush structure (21) is made on the surface of the flexible PET non-woven fabric by a spinning method so as to manufacture and obtain a wool surface (2).
2. The method of manufacturing a hook according to claim 1, wherein the intaglio structure is further provided with a groove for forming a hot-melt protrusion (13) of the hook, the polyurethane elastic portion further comprises a hot-melt protrusion (13), and the hot-melt protrusion (13) is configured to be fixed in a slot hole to be assembled by hot-melt deformation.
3. The method for preparing the magic hook according to claim 1, wherein the aqueous polyurethane slurry is a hot-melt aqueous polyurethane emulsion, the hot-melt aqueous polyurethane emulsion is a milky semitransparent liquid, the solid content is 32+ -5%, the PH value is 6-8, and the viscosity is more than 300 mPa.S.
4. The method of preparing a hook according to claim 1, wherein the coating speed in the gravure coating process is 1-2m/min, the maximum coating speed is 4.5m/min, and the maximum operating temperature is 200 ℃.
5. The method for manufacturing a hook according to claim 1, wherein the nylon nonwoven fabric has a thickness of 0.3-1.5mm.
6. The method of manufacturing a magic hook according to claim 1, characterized in that the application of the hot-melt-treated aqueous polyurethane slurry to the surface of the membrane substrate (11) by a gravure coating process to form polyurethane elastic parts on the surface of the membrane substrate (11) comprises the steps of:
carrying out the water-soluble polyurethane slurry from the slurry box by a hot roller combined with a gravure structure;
scraping off redundant water-soluble polyurethane slurry on the hot roller by using a thickness-fixing scraper;
coating the water-soluble polyurethane slurry carried out on the hot roller onto the surface of the diaphragm substrate (11) under the action of pressure;
curing the diaphragm base material (11) and uncured aqueous polyurethane, and stripping after curing to obtain a semi-finished product, wherein the semi-finished product is provided with a semi-finished product hook head formed preliminarily;
and shaping the semi-finished product by continuously heating hot air, so that the semi-finished product hook head is naturally bent, and the hook surface (1) is obtained after shaping.
7. The method of manufacturing a hook according to claim 6, wherein the curing temperature used in the step of curing the separator substrate (11) in combination with the uncured aqueous polyurethane is 80-100 ℃.
8. The method of manufacturing a hook according to claim 6, wherein the step of shaping the semi-finished product by continuously heating with hot air to naturally bend the semi-finished hook head comprises:
the heating temperature of the hot air is kept between 110 and 150 ℃ continuously, so that the bending angle of the semi-finished hook after shaping is 0 to 45 degrees.
9. The method for preparing the magic hook according to claim 1, characterized in that the thickness of the rough surface (2) is 0.8mm-6.8mm, the extensibility is 40% -80%, and the gram weight is 40-100g/m.
10. A hook comprising:
the hook surface (1) comprises a diaphragm base material (11) and a hook (12) formed on the diaphragm base material (11) by an intaglio coating process, wherein the diaphragm base material (11) is made of nylon non-woven fabric, and the hook (12) is made of water-soluble polyurethane;
the wool top (2), wool top (2) is flexible PET non-woven fabrics, the surface of flexible PET non-woven fabrics is formed with annular plush structure (21) that the weaving method was made.
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| CN202310866914.5A CN116876233A (en) | 2023-07-14 | 2023-07-14 | Preparation method of magic hook and magic hook |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117356800A (en) * | 2023-10-17 | 2024-01-09 | 浙江方大织带有限公司 | Tear-resistant magic tape and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117356800A (en) * | 2023-10-17 | 2024-01-09 | 浙江方大织带有限公司 | Tear-resistant magic tape and preparation method thereof |
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