CN111730940A - PTFE (polytetrafluoroethylene) film-coated protective clothing fabric with nano silver ion layer and manufacturing process - Google Patents
PTFE (polytetrafluoroethylene) film-coated protective clothing fabric with nano silver ion layer and manufacturing process Download PDFInfo
- Publication number
- CN111730940A CN111730940A CN202010407498.9A CN202010407498A CN111730940A CN 111730940 A CN111730940 A CN 111730940A CN 202010407498 A CN202010407498 A CN 202010407498A CN 111730940 A CN111730940 A CN 111730940A
- Authority
- CN
- China
- Prior art keywords
- film
- ptfe
- layer
- protective clothing
- fabric
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Images
Classifications
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
- B32B27/322—Layered products comprising a layer of synthetic resin comprising polyolefins comprising halogenated polyolefins, e.g. PTFE
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/02—Layered materials
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- 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
-
- 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
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
- B32B37/1054—Regulating the dimensions of the laminate, e.g. by adjusting the nip or platen gap
-
- 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
- B32B38/0008—Electrical discharge treatment, e.g. corona, plasma treatment; wave energy or particle radiation
-
- 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
- B32B38/18—Handling of layers or the laminate
- B32B38/1825—Handling of layers or the laminate characterised by the control or constructional features of devices for tensioning, stretching or registration
- B32B38/1833—Positioning, e.g. registration or centering
- B32B38/1841—Positioning, e.g. registration or centering during laying up
-
- 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
-
- 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
- B32B2255/00—Coating on the layer surface
- B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
-
- 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
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
-
- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0253—Polyolefin fibres
-
- 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
- B32B2571/00—Protective equipment
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Plasma & Fusion (AREA)
- Thermal Sciences (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a PTFE (polytetrafluoroethylene) film-coated protective clothing fabric with a nano silver ion layer and a manufacturing process thereof, and relates to the field of protective clothing fabrics. This PTFE tectorial membrane protective clothing surface fabric and preparation technology with nanometer silver ion layer, including acupuncture non-woven fabrics and PTFE film, acupuncture non-woven fabrics divide into first short fiber layer, enhancement layer and second short fiber layer, and the enhancement layer setting is between first short fiber layer and second short fiber layer, and the PTFE film is through hot pressing composite connection in the one side that the enhancement layer was kept away from on first short fiber layer. This PTFE tectorial membrane protective clothing surface fabric and preparation technology with nanometer silver ion layer, because the PTFE film has special microporous structure, and the surface does not have through hole, make the dust particulate matter be difficult for getting into the inside or the base cloth of film through the film surface, because the base cloth surface of tectorial membrane filter material coats one deck PTFE micropore film, because the particle diameter of dust granule is greater than the micropore of film micron level far away, thereby by being blockked on the film surface, only allow gas to pass through and detain the dust particulate matter on the film surface, form surface filtration's effect.
Description
Technical Field
The invention relates to the technical field of protective clothing fabrics, in particular to a PTFE (polytetrafluoroethylene) film-coated protective clothing fabric with a nano silver ion layer and a manufacturing process thereof.
Background
The medical protective clothing refers to protective clothing used by medical staff (doctors, nurses, public health staff, cleaning staff and the like) and people entering specific medical and health areas (such as patients, hospital visitors, staff entering infected areas and the like), and the medical protective clothing has the functions of isolating germs, harmful ultrafine dust, acid-base solution, electromagnetic radiation and the like, ensuring the safety of staff and keeping the environment clean.
The common protective clothing fabric is a needle-punched non-woven fabric, in the initial stage of filtration, outside air passes through the surface of a filter material and mainly depends on the interception effect of the fiber pore size of the fabric, the air impurities are filtered, the filtration mechanism of the needle-punched non-woven fabric is divided into a three-layer structure to form a structure of short shredding, reinforcing ribs and short shredding, substances in air flow are intercepted by fibers and are continuously accumulated, and some fine particles are embedded into the inner layer of a base fabric and even permeate the blockage of the base fabric, so that the PTFE film-coated protective clothing fabric with a nano silver ion layer and the manufacturing process are provided.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention discloses a PTFE (polytetrafluoroethylene) film-coated protective clothing fabric with a nano silver ion layer and a manufacturing process thereof, and aims to solve the problems in the background art.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a PTFE nanometer tectorial membrane protective clothing surface fabric, includes acupuncture non-woven fabrics and PTFE film, acupuncture non-woven fabrics divide into first short fiber layer, enhancement layer and second short fiber layer, the enhancement layer sets up between first short fiber layer and second short fiber layer, the PTFE film is through hot pressing composite connection in the one side that the enhancement layer was kept away from on first short fiber layer.
Preferably, the needle-punched non-woven fabric comprises the following production steps:
s1 melt spinning: melting and mixing polypropylene or other raw materials by an extruder, and extruding by a spinneret plate of a spinning machine head to form melt trickle;
s2 air drawing of nascent fiber: the fiber passes through the gap in the drafting box and is drafted by compressed air, and the drafting speed of the drafting box can be changed up and down according to different processes and varieties to reach 6000-8000 m/min;
s3 fiber forming: after the filaments form a monofilament structure which is uniformly distributed through a filament dividing procedure, the monofilaments are laid on a net curtain with negative pressure to form a non-woven fiber net;
s4 setting of the fiber web: and the fiber web is further subjected to needling, reinforcing and shaping by a subsequent reinforcing device, and then is wound by a winding device to obtain a product.
Preferably, the needling reinforcement adopts rows of needling with triangular cross sections and barbed edges to repeatedly pierce the fiber web, fibers on the surface layer of the fiber web are forced into the interior of the fiber web in the piercing process of the needles to form an entangled structure, the fiber web is finally reinforced and shaped, a reinforcing layer is formed in the interior of the needled non-woven fabric, and a first short fiber layer and a second short fiber layer are formed on the two outer sides of the reinforced layer.
Preferably, the PTFE membrane comprises the following production steps:
s1 mixing raw materials: mixing PTFE resin and an extrusion aid, wherein the PTFE resin is preferably selected from a grade with a relatively proper molecular weight, and is prepared according to a proper proportion according to the grades of the resin and the extrusion aid, and the extrusion aid is generally in the range of 12-28%;
s2 calendering: the calendering is to roll and form a bar-shaped, tubular (can be cut into a belt shape) or belt-shaped semi-finished product from an extruder in a two-roll calender, the compression ratio is large, the longitudinal fiberization strength is high, the breaking is not easy during the stretching, and the continuous production is easy;
s3 biaxial stretching: PIFE can be stretched between normal temperature and 327 ℃, namely stretching below the melting point is carried out in a high elastic state, stretching at low temperature can break a film, so that stretching cannot be carried out, and the stretching temperature is generally between 40 ℃ and 327 ℃;
s4 coiling: the stretched PTFE film was wound up.
Preferably, 5, the hot-press compounding of the needle-punched non-woven fabric and the PTFE film comprises the following production steps:
s1 needle punching non-woven fabric surface treatment: according to the working conditions of the application field, coating different high molecular polymers on the surface of the fiber;
s2 PTFE film surface modification: treating the surface of the PTFE film by using cold plasma, improving the free energy of the surface of the high polymer material film, and then carrying out acrylic acid grafting;
s3 hot-pressing compounding: adopting a membrane guide system, and taking a mixed solution of nano silver ions and food-grade glue as a cement of the PTFE membrane;
and S4 after finishing: and a manipulator automatic coil changing technology is adopted.
Preferably, the film guide system comprises a hot pressing roller, a rubber pressure roller and a pressure adjusting mechanism, double tangent line positioning among the film guide rubber pressure roller, the film withdrawing rubber pressure roller and the hot pressing roller is ensured, and line contact with the hot pressing roller is realized when the film is in contact with the fabric.
Preferably, the automatic roll changing technology adopts an edge position control type deviation rectifying control system, the driving unit consists of a servo motor and a ball screw, the detection unit detects that the material deviates, the signal is transmitted to the control unit, and the control unit obtains the optimal control precision by adjusting the servo motor. At the end of the unwinding machine, the unwinding shaft is axially moved through deviation correction control, and the film material is ensured to be unwound at a fixed position; during middle guiding, the working platform is twisted along the film material input plane through deviation rectification control so as to achieve the effect of adjusting the position of the film material; at the end of the winding machine, the winding shaft is axially moved through deviation correction control, the composite product edge is always kept perpendicular to the winding shaft, and the winding material is ensured to be tidy.
The invention discloses a PTFE (polytetrafluoroethylene) film-coated protective clothing fabric with a nano silver ion layer and a manufacturing process thereof, and the PTFE film-coated protective clothing fabric has the following beneficial effects:
1. this PTFE tectorial membrane protective clothing surface fabric and preparation technology with nanometer silver ion layer, because the PTFE film has special microporous structure, and the surface does not have through hole, make the dust particulate matter be difficult for getting into the inside or the base cloth of film through the film surface, because the base cloth surface of tectorial membrane filter material coats one deck PTFE micropore film, because the particle diameter of dust granule is greater than the micropore of film micron level far away, thereby by being blockked on the film surface, only allow gas to pass through and detain the dust particulate matter on the film surface, form surface filtration's effect.
2. The PTFE film protective clothing fabric with the nano silver ion layer and the manufacturing process thereof treat the surface of the PTFE film by using cold plasma, improve the free energy of the surface of the high polymer material film, enhance the heat bonding effect of the film material and the fiber support material, reduce the high-temperature gelatinization of the surface of the film by controlling the treatment parameters under the condition of effective bonding, and increase the retention rate after micropore bonding.
3. This PTFE tectorial membrane protective clothing surface fabric and manufacturing process with nanometer silver ion layer leads the membrane system and adopts accurate compression roller clearance adjusting device, realizes the real-time automatic adjustment of compression roller clearance, ensures that the pressure is even unanimous on the film, avoids because the hole jam problem that the too big pressure arouses and the compound not firm problem that the undersize of pressure arouses.
4. According to the PTFE film-coated protective clothing fabric with the nano silver ion layer and the manufacturing process, an edge position control type deviation rectification control system is adopted in an automatic roll changing technology, a driving unit consists of a servo motor and a ball screw, a detection unit detects that a material deviates, then a signal is transmitted to a control unit, the control unit obtains the optimal control precision by adjusting the servo motor, and at the end of an unreeling machine, an unreeling shaft moves axially through deviation rectification control to ensure that a film material is unreeled at a fixed position; during middle guiding, the working platform is twisted along the film material input plane through deviation rectification control so as to achieve the effect of adjusting the position of the film material; at the end of the winding machine, the winding shaft is axially moved through deviation correction control, the composite product edge is always kept perpendicular to the winding shaft, and the winding material is ensured to be tidy.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a flow chart of the thermal press compounding of the present invention;
FIG. 3 is a flow chart of a process for producing a needle punched nonwoven fabric according to the present invention;
FIG. 4 is a flow chart of the production of a PTFE membrane of the present invention.
In the figure: 1 needle-punched non-woven fabric, 101 a first staple fiber layer, 102 a reinforcing layer, 103 a second staple fiber layer, 2 a PTFE film.
Detailed Description
Example 1:
the embodiment of the invention discloses a PTFE (polytetrafluoroethylene) coated protective clothing fabric with a nano silver ion layer, which comprises a needle-punched non-woven fabric 1 and a PTFE film 2, wherein the needle-punched non-woven fabric 1 is divided into a first short fiber layer 101, a reinforcing layer 102 and a second short fiber layer 103, the reinforcing layer 102 is arranged between the first short fiber layer 101 and the second short fiber layer 103, the PTFE film 2 is connected to one side of the first short fiber layer 101, which is far away from the reinforcing layer 102, through hot pressing and compounding, because the PTFE film 2 has a special microporous structure and has no through holes on the surface, dust particles are not easy to enter the interior of the film or the base cloth through the film surface, because the base cloth surface of a coated filter material is coated with a layer of PTFE microporous film, because the particle size of the dust particles is far larger than the micron-sized micropores of the film, the dust particles are blocked on the film surface, only gas is allowed to pass through and be retained on the film surface, the effect of surface filtration is formed.
Example 2:
the embodiment of the invention discloses a manufacturing process of a PTFE (polytetrafluoroethylene) film-coated protective clothing fabric with a nano silver ion layer, and as shown in figures 1-4, a needle-punched non-woven fabric 1 comprises the following production steps:
s1 melt spinning: melting and mixing polypropylene or other raw materials by an extruder, and extruding by a spinneret plate of a spinning machine head to form melt trickle;
s2 air drawing of nascent fiber: the fiber passes through the gap in the drawing box and is drawn by compressed air, and the drawing speed of the drawing box can be changed up and down according to different processes and varieties and can reach 6000-8000m/min, the extruded melt trickle is cooled by high-speed quenching air, and meanwhile, the fiber is subjected to the drawing action of drawing air flow in the cooling process to form continuous filaments with higher strength and more stable performance;
s3 fiber forming: after the filaments form a monofilament structure which is uniformly distributed through a filament dividing procedure, the monofilaments are laid on a net curtain with negative pressure to form a non-woven fiber net;
s4 setting of the fiber web: and the fiber web is further subjected to needling, reinforcing and shaping by a subsequent reinforcing device, and then is wound by a winding device to obtain a product.
The method is characterized in that rows of needles with triangular sections are adopted for reinforcing, barbs are arranged at edges of the needles for repeatedly puncturing the fiber web, fibers on the surface layer of the fiber web are forced to be brought into the fiber web in the puncturing process of the needles, an entanglement structure is formed, recovery is avoided, the fluffy fiber web is compressed under the friction and entanglement effects among the fibers, numerous entanglement points are formed after repeated puncturing, the fiber web is finally reinforced and shaped, a reinforcing layer 102 is formed in the needle-punched non-woven fabric 1, and a first short fiber layer 101 and a second short fiber layer 103 are formed on the two outer sides of the needle-punched non-woven fabric.
The PTFE membrane 2 comprises the following production steps:
s1 mixing raw materials: the PTFE resin and the extrusion assistant are mixed, wherein the PTFE resin is preferably of a grade with a proper molecular weight, the performance of the PTFE resin can bear high-speed strain without breaking under a high-temperature condition during stretching, the extrusion assistant is preferably of a material which is capable of wetting the resin, non-toxic, high in boiling point, easy to remove and free of residue, and the extrusion assistant is prepared according to a proper proportion according to the resin and the grade of the extrusion assistant, and the general range of the extrusion assistant is 12-28%.
S2 calendering: the calendering is to roll and form a bar-shaped, tubular (can be cut into a belt-shaped) or belt-shaped semi-finished product from an extruder in a two-roll calender, has large compression ratio, high longitudinal fibrosis strength, difficult fracture during stretching and easy continuous production, and extrudes a forming auxiliary agent in the semi-finished product through a calendering process to ensure that the semi-finished product is more compact. The calendering process, in which the degree of densification of the PTFE substrate can be characterized using the density of the green product, is a critical process that determines the properties of the final product. In order to ensure good calendering effect, a roller of a calender needs a heating device, generally needs to be heated to more than 100 ℃, has large compression ratio and high longitudinal fibrosis strength, is not easy to break during stretching, is easy for continuous production, has larger product strength and overlarge compression ratio, makes an extruded product too hard, and is not beneficial to normal production of subsequent procedures, so the compression ratio is reasonably selected according to resin brands, equipment and production processes.
S3 biaxial stretching: PIFE can be stretched at a temperature of between normal temperature and 327 ℃, i.e., stretching below the melting point is performed in a high elastic state, stretching at a low temperature causes film breakage, resulting in failure of stretching, while at a temperature higher than 327 ℃, the crystalline state among PIFE molecules is changed into amorphous state, and a network structure cannot be obtained well, so that the stretching temperature is generally between 40 ℃ and 327 ℃.
S4 coiling: the stretched PTFE film 2 is wound.
The hot-pressing compounding of the needle-punched non-woven fabric 1 and the PTFE film 2 comprises the following production steps:
s1 surface treatment of the needle-punched nonwoven fabric 1: according to the working conditions of the application field, different high molecular polymers are coated on the surface of the fiber to enhance the chemical stability of the fiber, ensure that the fiber-coated filter material in a high-temperature state for a long time has higher bonding fastness, and the properties of strength, folding resistance, wear resistance and the like are not influenced in an acidic or alkaline environment; improving the bending flexibility of the fiber; the hydrophobicity of the surface of the filter material is improved, so that the filter material has anti-condensation capability.
S2 surface modification of PTFE film 2: the surface of the PTFE film 2 is treated by the cold plasma, the free energy of the surface of the high polymer material film is improved, the heat bonding effect of the film material and the fiber support body material is enhanced, and the high-temperature gelatinization of the surface of the film is reduced and the retention rate after the micropore bonding is increased by controlling the treatment parameters under the condition of effective bonding.
S3 hot-pressing compounding: the method adopts a film guide system, takes mixed liquid of nano silver ions and food-grade glue as a cementing compound of a PTFE film, the film guide system comprises a hot-pressing roller, a rubber pressure roller and a pressure adjusting mechanism, ensures double tangent positioning among the film guide rubber pressure roller, a film removing rubber pressure roller and the hot-pressing roller, realizes line contact with the hot-pressing roller when a film is contacted with a fabric, and has the advantages of particularly important temperature control of a hot-pressing composite process, quick and stable heating system is required to realize quick rise of heating temperature, and the temperature change is controlled at 1 ℃/m through a heat balance system, namely, the temperature change is controlled at 1 ℃/m, namely, the temperature difference between every two meters of filter materials is ensured within 1 ℃ during hot-pressing film covering.
And S4 after finishing: the automatic roll changing technology of the manipulator is adopted, an edge position control type deviation rectifying control system is adopted in the automatic roll changing technology, a driving unit consists of a servo motor and a ball screw, a detection unit detects that a material deviates, a signal is transmitted to a control unit, the control unit obtains the optimal control precision by adjusting the servo motor, and an unwinding shaft axially moves through deviation rectifying control at the end of an unwinding machine to ensure that a film material is unwound at a fixed position; during middle guiding, the working platform is twisted along the film material input plane through deviation rectification control so as to achieve the effect of adjusting the position of the film material; at the end of the winding machine, the winding shaft is axially moved through deviation correction control, the edge of the composite product is always kept perpendicular to the winding shaft, the received material is ensured to be orderly wound, the online slitting of the continuously produced composite product can be realized, the stable tension between the webs is ensured, the problems of consistency and harmony of the reel changing action are solved, and the quality of finished products is improved.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a PTFE tectorial membrane protective clothing surface fabric with nanometer silver ion layer, includes acupuncture non-woven fabrics (1) and PTFE film (2), its characterized in that: the needle-punched non-woven fabric (1) is divided into a first short fiber layer (101), a reinforcing layer (102) and a second short fiber layer (103), the reinforcing layer (102) is arranged between the first short fiber layer (101) and the second short fiber layer (103), and the PTFE film (2) is connected to one side, far away from the reinforcing layer (102), of the first short fiber layer (101) through hot-pressing compounding.
2. The manufacturing process of the PTFE coated protective clothing fabric with the nano silver ion layer as claimed in claim 1, is characterized in that: the needle-punched non-woven fabric (1) comprises the following production steps:
s1 melt spinning: melting and mixing polypropylene or other raw materials by an extruder, and extruding by a spinneret plate of a spinning machine head to form melt trickle;
s2 air drawing of nascent fiber: the fiber passes through the gap in the drafting box and is drafted by compressed air, and the drafting speed of the drafting box can be changed up and down according to different processes and varieties to reach 6000-8000 m/min;
s3 fiber forming: after the filaments form a monofilament structure which is uniformly distributed through a filament dividing procedure, the monofilaments are laid on a net curtain with negative pressure to form a non-woven fiber net;
s4 setting of the fiber web: and the fiber web is further subjected to needling, reinforcing and shaping by a subsequent reinforcing device, and then is wound by a winding device to obtain a product.
3. The manufacturing process of the PTFE coated protective clothing fabric with the nano silver ion layer as claimed in claim 2, is characterized in that: the method comprises the following steps of performing repeated puncture on a fiber web by adopting row of needle punctures with triangular sections and barbed edges, forcibly bringing fibers on the surface layer of the fiber web into the fiber web in the puncture process of the needle punctures, forming an entanglement structure, finally reinforcing and shaping the fiber web, forming a reinforcing layer (102) in the needle-punched non-woven fabric (1), and forming a first short fiber layer (101) and a second short fiber layer (103) on the two outer sides.
4. The manufacturing process of the PTFE coated protective clothing fabric with the nano silver ion layer as claimed in claim 1, is characterized in that: the PTFE membrane (2) comprises the following production steps:
s1 mixing raw materials: mixing PTFE resin and an extrusion aid, wherein the PTFE resin is preferably selected from a grade with a relatively proper molecular weight, and is prepared according to a proper proportion according to the grades of the resin and the extrusion aid, and the extrusion aid is generally in the range of 12-28%;
s2 calendering: the calendering is to roll and form a bar-shaped, tubular (can be cut into a belt shape) or belt-shaped semi-finished product from an extruder in a two-roll calender, the compression ratio is large, the longitudinal fiberization strength is high, the breaking is not easy during the stretching, and the continuous production is easy;
s3 biaxial stretching: PIFE can be stretched between normal temperature and 327 ℃, namely stretching below the melting point is carried out in a high elastic state, stretching at low temperature can break a film, so that stretching cannot be carried out, and the stretching temperature is generally between 40 ℃ and 327 ℃;
s4 coiling: the stretched PTFE film (2) is wound up.
5. The manufacturing process of the PTFE nano-film covered protective clothing fabric according to claim 1, characterized by comprising the following steps: the hot-pressing compounding of the needle-punched non-woven fabric (1) and the PTFE film (2) comprises the following production steps:
s1 surface treatment of the needle-punched non-woven fabric (1): according to the working conditions of the application field, coating different high molecular polymers on the surface of the fiber;
surface modification of S2 PTFE film (2): treating the surface of the PTFE film (2) by using cold plasma, improving the free energy of the surface of the high polymer material film, and then carrying out acrylic acid grafting;
s3 hot-pressing compounding: adopting a membrane guide system, and taking a mixed solution of nano silver ions and food-grade glue as a cement of the PTFE membrane;
and S4 after finishing: and a manipulator automatic coil changing technology is adopted.
6. The manufacturing process of the PTFE coated protective clothing fabric with the nano silver ion layer, according to the claim 5, is characterized in that: the film guide system comprises a hot-pressing roller, a rubber pressure roller and a pressure adjusting mechanism, ensures the double tangent positioning among the film guide rubber pressure roller, the film withdrawing rubber pressure roller and the hot-pressing roller, and realizes the line contact with the hot-pressing roller when the film is contacted with the fabric.
7. The manufacturing process of the PTFE coated protective clothing fabric with the nano silver ion layer, according to the claim 5, is characterized in that: the automatic roll changing technology adopts an edge position control type deviation rectifying control system, a driving unit consists of a servo motor and a ball screw, a detection unit detects that a material deviates, then a signal is transmitted to a control unit, and the control unit adjusts the servo motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010407498.9A CN111730940A (en) | 2020-05-14 | 2020-05-14 | PTFE (polytetrafluoroethylene) film-coated protective clothing fabric with nano silver ion layer and manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010407498.9A CN111730940A (en) | 2020-05-14 | 2020-05-14 | PTFE (polytetrafluoroethylene) film-coated protective clothing fabric with nano silver ion layer and manufacturing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111730940A true CN111730940A (en) | 2020-10-02 |
Family
ID=72647188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010407498.9A Pending CN111730940A (en) | 2020-05-14 | 2020-05-14 | PTFE (polytetrafluoroethylene) film-coated protective clothing fabric with nano silver ion layer and manufacturing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111730940A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112519277A (en) * | 2020-11-16 | 2021-03-19 | 杭州奥风科技有限公司 | Production method of functional composite breathable microporous membrane based on micro-nano material |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104314A (en) * | 2006-11-30 | 2008-01-16 | 中国人民解放军总后勤部军需装备研究所 | Polytetrafluoroethylene multi-layer composite film and its protective material preparation method |
| CN102658038A (en) * | 2012-04-10 | 2012-09-12 | 杭州洁弗膜技术有限公司 | Preparation method of sub-high efficiency polytetrafluoroethylene (PTFE) micro-porous film and film lamination material |
| CN105150643A (en) * | 2015-10-22 | 2015-12-16 | 江苏阳光股份有限公司 | Wool/graft modified polytetrafluoroethylene film compound fabrics |
| CN105437677A (en) * | 2016-01-22 | 2016-03-30 | 圣华盾防护科技股份有限公司 | Chemical reagent proof fabric and manufacturing method thereof |
| CN106042558A (en) * | 2016-07-26 | 2016-10-26 | 常熟市立新无纺布织造有限公司 | Medical needled non-woven fabric |
| CN205730022U (en) * | 2016-07-15 | 2016-11-30 | 广州大陌生物科技有限公司 | A kind of protective garment |
| CN206812536U (en) * | 2017-06-02 | 2017-12-29 | 杭州琪瑶纺织有限公司 | A kind of waterproof moisture permeable fabric |
-
2020
- 2020-05-14 CN CN202010407498.9A patent/CN111730940A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104314A (en) * | 2006-11-30 | 2008-01-16 | 中国人民解放军总后勤部军需装备研究所 | Polytetrafluoroethylene multi-layer composite film and its protective material preparation method |
| CN102658038A (en) * | 2012-04-10 | 2012-09-12 | 杭州洁弗膜技术有限公司 | Preparation method of sub-high efficiency polytetrafluoroethylene (PTFE) micro-porous film and film lamination material |
| CN105150643A (en) * | 2015-10-22 | 2015-12-16 | 江苏阳光股份有限公司 | Wool/graft modified polytetrafluoroethylene film compound fabrics |
| CN105437677A (en) * | 2016-01-22 | 2016-03-30 | 圣华盾防护科技股份有限公司 | Chemical reagent proof fabric and manufacturing method thereof |
| CN205730022U (en) * | 2016-07-15 | 2016-11-30 | 广州大陌生物科技有限公司 | A kind of protective garment |
| CN106042558A (en) * | 2016-07-26 | 2016-10-26 | 常熟市立新无纺布织造有限公司 | Medical needled non-woven fabric |
| CN206812536U (en) * | 2017-06-02 | 2017-12-29 | 杭州琪瑶纺织有限公司 | A kind of waterproof moisture permeable fabric |
Non-Patent Citations (2)
| Title |
|---|
| 周大纲: "《土工合成材料制造技术及性能-2版》", 30 April 2019, 中国轻工业出版社 * |
| 邬国铭: "《高分子材料加工工艺学》", 31 July 2000, 中国纺织出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112519277A (en) * | 2020-11-16 | 2021-03-19 | 杭州奥风科技有限公司 | Production method of functional composite breathable microporous membrane based on micro-nano material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2193229B1 (en) | Nonwoven from bulked filament tow | |
| US8123890B2 (en) | Process for preparing an elastic nonwoven web | |
| US6358461B1 (en) | Method of manufacture of nonwoven fabric | |
| EP1348051B1 (en) | In-line heat treatment of homofilament crimp fibers | |
| DK2650419T3 (en) | Melt-blown non-woven-textile fabric and manufacturing method and devices thereof | |
| KR100436992B1 (en) | One-way stretchable nonwoven fabric and its manufacturing method | |
| KR101758204B1 (en) | Twisted Composite Yarn Based Nanofibers and Method for Manufacturing the Same | |
| EP1896635B1 (en) | Method for the production of nonwoven fabrics | |
| JPS6233342B2 (en) | ||
| JPH08504897A (en) | Mesotriad syndiotactic polypropylene fiber | |
| WO1996000807A1 (en) | Bulky long fiber and split yarn of polytetrafluoroethylene, method of manufacturing the same, cotton-like material manufacturing method using the fiber and yarn, and dust collecting filter cloth | |
| CN108179549A (en) | A kind of elastic super soft non-woven material of polypropylene-base long filament and its production method | |
| JPS6233343B2 (en) | ||
| CN111730940A (en) | PTFE (polytetrafluoroethylene) film-coated protective clothing fabric with nano silver ion layer and manufacturing process | |
| KR20150011129A (en) | Nonwoven fiber for an air filter having an improved fluff and the manufacturing method thereof | |
| US7025914B2 (en) | Multilayer approach to producing homofilament crimp spunbond | |
| CN107460641B (en) | Flexible non-woven fabric and manufacturing method thereof | |
| CN113403753B (en) | Processing method of two-component spinning/devillicate lapping two-step method non-woven material | |
| JP2001020132A (en) | Polypropylene fiber and its production | |
| CN116356483B (en) | Preparation method and application of high-density monocomponent antibacterial melt-blown cloth | |
| CN115161875B (en) | One-step method for producing corrosion-resistant and aging-resistant nonwoven geotextile and production process thereof | |
| KR20120071639A (en) | Process for preparing nonwoven fabric, nonwoven fabric produced therefrom and apparatus for the preparation thereof | |
| CN115161877A (en) | Hinder ventilative surface fabric apparatus for producing of fungus | |
| JP2009114570A (en) | Method for producing spunbond nonwoven fabric, and nonwoven fabric sheet using the spunbond nonwoven fabric obtained thereby |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201002 |
|
| RJ01 | Rejection of invention patent application after publication |