CN114000263B - Full-automatic production method of anti-floc-falling non-woven fabric and clinical full-protection medical surgical drape - Google Patents
Full-automatic production method of anti-floc-falling non-woven fabric and clinical full-protection medical surgical drape Download PDFInfo
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/005—Synthetic yarns or filaments
- D04H3/007—Addition polymers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B46/00—Surgical drapes
- A61B46/20—Surgical drapes specially adapted for patients
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/103—Agents inhibiting growth of microorganisms
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
- D04H3/105—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by needling
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Abstract
The invention discloses a method for fully automatically producing anti-floc non-woven fabrics and a clinical full-protection medical surgical drape, and relates to the technical field of preparation of medical equipment, wherein the clinical full-protection medical surgical drape comprises a first single cloth and a second single cloth which are connected in an overlapping manner, the first single cloth and the second single cloth are both prepared by the method for fully automatically producing the anti-floc non-woven fabrics, and one surface of a third fiber yarn layer is directly contacted with a human body; the second single cloth is positioned on the top surface of the middle part of the first single cloth, the left end and the right end of the second single cloth are provided with wing parts, and the two wing parts extend beyond the two side edges of the first single cloth. The anti-lint non-woven fabric and the clinical full-protection medical surgical drape can realize full-automatic production, the anti-lint non-woven fabric formed by compounding has excellent performances of water resistance, antibiosis, mould prevention, water absorption and lint resistance, and the clinical full-protection medical surgical drape can meet the use requirements of operating tables of various specifications, so that all-round protection is realized.
Description
Technical Field
The invention relates to the technical field of medical equipment preparation, in particular to a method for fully automatically producing anti-floc non-woven fabrics and a clinical full-protection medical surgical drape.
Background
At present, the medical surgical drape is prepared clinically by adopting non-woven fabrics (non-woven fabrics and the like), the non-woven fabrics are novel medical materials, and the medical surgical drape generally has the advantages of water repellency, air permeability, flexibility, no combustion, no toxicity, no stimulation, rich colors, degradability and the like, but also has the following defects:
first, a higher number of flocs. The floc is one of the important sources of surgical incision infection, and a large number of experiments and facts prove that the floc can cause long-term and sometimes direct harm to human bodies, so that clinically required surgical drapes and the like can effectively protect surgical wounds of patients from infection, and the floc is an important index for measuring clinical use of medical surgical drapes.
Secondly, a smaller protection range. At present, bed sheets used on a medical surgical drape and an operating table in clinical use are straight, and when a patient lies on the operating table, if two arms need to be opened, the range of the patient exceeds the range of the surgical drape and the bed sheets, the patient directly contacts the operating table, cross infection is easily caused, and the protection range is small.
Disclosure of Invention
Therefore, in order to overcome the above drawbacks, embodiments of the present invention provide a method for fully automatically producing a lint-resistant nonwoven fabric and a clinical full-protection medical surgical drape.
Therefore, the method for fully automatically producing the anti-floc non-woven fabric comprises the following steps:
s1, inputting the first component into a first screw extruder, and enabling first filaments output from a first extrusion port of the first screw extruder to sequentially pass through a first cooling air device and a first filament divider, then enabling the first filaments to fall onto a conveyor belt of a web former and synchronously move and tile along the conveyor belt to form a first filament layer; the first component comprises the following components in parts by weight:
70-90 parts of polypropylene
2-8 parts of polytetrafluoroethylene
2-5 parts of perfluoroalkyl acrylate;
s2, inputting a second component into a second screw extruder, and allowing a second filament output from a second extrusion port of the second screw extruder to sequentially pass through a second cooling air device and a second filament splitter, fall onto a first filament layer on a conveyer belt of a web former, and move synchronously along with the conveyer belt and spread to form a second filament layer; the second component comprises the following components in parts by weight:
60-90 parts of polypropylene
2-17 parts of polyacrylamide modified biochar
1-2 parts of nano silver
2-8 parts of chitosan
2-8 parts of layered zirconium phosphate;
s3, inputting a third component into a third screw extruder, and allowing a third filament output from a third extrusion port of the third screw extruder to sequentially pass through a third cooling air device and a third filament splitter, then allowing the third filament to fall onto a second filament layer on a conveyer belt of a web former and synchronously moving and flatly paving the second filament layer along with the conveyer belt to form a third filament layer; the third component comprises the following components in parts by weight:
50-80 parts of polypropylene
2-8 parts of nano calcium carbonate
0.5-5 parts of monoglyceride
2-8 parts of chitin derivative;
s4, conveying the first fiber layer, the second fiber layer and the third fiber layer which are compounded to a drafting device through a web former conveying belt, conveying the fiber layers to a reinforcing device after the fiber layers are drafted by the drafting device, and reinforcing the fiber layers by the reinforcing device to obtain the anti-deflocculation non-woven fabric.
Preferably, the first, second and third components are dried prior to use.
Preferably, the first cooling air device, the second cooling air device and the third cooling air device respectively comprise a low air speed section, an intermediate air speed section and a high air speed section which are sequentially connected from top to bottom along the falling direction of the fiber, wherein the length of the low air speed section is 0-25cm, the air speed of the cooling air is 280cm/s, the length of the intermediate air speed section is 10-30cm, the air speed of the cooling air is 500cm/s, the length of the high air speed section is 50-60cm, and the air speed of the cooling air is 600 cm/s.
Preferably, first branch silk ware, second branch silk ware and third branch silk ware all include many cross section diameters along the fibre whereabouts direction from top to bottom reduce gradually to the branch silk stick of grow gradually, divide equidistant range between the silk stick, all divide silk sticks and power to be connected, and long filament passes through from the clearance between the branch silk stick.
Preferably, the drafting device comprises at least one positioning roller, at least two sets of roller sets and at least one shaping roller which are arranged in sequence, each set of roller set comprises two rollers with surfaces capable of heating, the distance between the two rollers is smaller than the sum of the radii of the two rollers, and the first fiber yarn layer, the second fiber yarn layer and the third fiber yarn layer which are compounded move in an S shape under the driving of the at least two sets of roller sets; the shaping roller is a roller with a surface capable of being cooled, and the fiber layer is output after being conducted by the shaping roller.
Preferably, the reinforcing device comprises a thorn wheel and a flat wheel, the fiber layer output after being drafted by the drafting device is input and passes through a gap between the thorn wheel and the flat wheel, the thorn wheel is used for acting on the third fiber layer, and the flat wheel is used for acting on the first fiber layer.
The clinical full-protection medical surgical drape comprises a first single cloth and a second single cloth which are connected in an overlapping mode, wherein the first single cloth and the second single cloth are both prepared into anti-falling-wadding non-woven fabrics by adopting the full-automatic anti-falling-wadding non-woven fabric production method, and one surface where a third fiber silk layer is located is a surface directly contacted with a human body; the second single cloth is positioned on the top surface of the middle part of the first single cloth, the left end and the right end of the second single cloth are provided with wing parts, and the two wing parts extend beyond the two side edges of the first single cloth.
Preferably, the first single cloth bottom surface and the second single cloth bottom surface are provided with at least two upper positioning pull rings and at least two lower positioning pull rings, magic tapes matched with each other are respectively arranged on the upper positioning pull rings and corresponding positions, which can be contacted with the upper positioning pull rings after being folded inwards, of the first single cloth bottom surface, and magic tapes matched with each other are respectively arranged on the lower positioning pull rings and corresponding positions, which can be contacted with the lower positioning pull rings after being folded inwards, of the first single cloth bottom surface.
Preferably, the device further comprises at least two head positioning aluminum strips which are arranged in a V shape and used for stabilizing the head against moving.
The method for fully automatically producing the anti-floc non-woven fabric and the clinical full-protection medical surgical drape provided by the embodiment of the invention have the following advantages:
1. the full-automatic production method of the anti-floc non-woven fabric can be realized in a full-automatic way, and has the advantages of no toxicity and no peculiar smell in the processing process and high production efficiency. The three fiber silk layers are respectively prepared by selecting special materials and compounded to form the anti-falling wadding non-woven fabric, so that the anti-falling wadding non-woven fabric has excellent performances of water resistance, antibiosis, mould resistance, water absorption and anti-falling wadding, and can be suitable for medical surgical drapes meeting clinical requirements.
2. Clinical medical surgical drape of protecting entirely, enlarge surgical drape area when the alar part is opened, make each position homoenergetic such as patient's arm effectively protected by the surgical drape, according to the specification of different operating tables, the alar part of expansion can hang in operating table both sides or expand and put on the operating table, realizes all-round protection, does not contact with the operating table, reduces the cross infection risk. And the unfolded wing part can also be used as a hand grasping part of an operating sheet when the patient is moved, so that the patient can be conveniently grasped and moved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the description below are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flowchart showing a specific example of a method for producing a lint-resistant nonwoven fabric in a fully automatic manner according to embodiment 1 of the present invention;
fig. 2 is a schematic view of a specific example of a first filament splitter, a second filament splitter, or a third filament splitter in embodiment 1 of the present invention;
FIG. 3 is a schematic view showing a concrete example of a drawing device in example 1 of the present invention;
fig. 4 is a schematic view of a specific example of a clinical full-protection medical surgical drape in embodiment 2 of the present invention.
Reference numerals: 1-wire separating rod, 2-positioning roller, 3-roller group, 4-roller group, 5-shaping roller, 101-first single cloth, 102-second single cloth, 1021-wing part, 103-upper positioning pull ring, 1031-magic tape, 104-lower positioning pull ring, 1041-magic tape and 105-head positioning aluminum strip.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In describing the present invention, it is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises" and/or "comprising," when used in this specification, are intended to specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The term "and/or" includes any and all combinations of one or more of the associated listed items. The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The terms "mounted," "connected," and "coupled" are to be construed broadly and may, for example, be fixedly coupled, detachably coupled, or integrally coupled; either directly or indirectly through intervening media, or through the communication between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The embodiment provides a method for fully automatically producing anti-lint non-woven fabric, as shown in fig. 1, comprising the following steps:
s1, inputting the first component into a first screw extruder, and enabling first filaments output from a first extrusion port of the first screw extruder to sequentially pass through a first cooling air device and a first filament divider, then enabling the first filaments to fall onto a conveyor belt of a web former and synchronously move and tile along the conveyor belt to form a first filament layer; the first component comprises the following components in parts by weight:
70-90 parts of polypropylene
2-8 parts of polytetrafluoroethylene
2-5 parts of perfluoroalkyl acrylate
Thereby leading the first fiber silk layer to have better waterproof function;
s2, inputting a second component into a second screw extruder, and allowing a second filament output from a second extrusion port of the second screw extruder to sequentially pass through a second cooling air device and a second filament splitter, fall onto a first filament layer on a conveyer belt of a web former, and move synchronously along with the conveyer belt and spread to form a second filament layer; the second component comprises the following components in parts by weight:
60-90 parts of polypropylene
2-17 parts of polyacrylamide modified biochar
1-2 parts of nano silver
2-8 parts of chitosan
2-8 parts of layered zirconium phosphate
Thereby the second fiber layer has better antibacterial, mildewproof and water absorption functions;
s3, inputting a third component into a third screw extruder, and allowing a third filament output from a third extrusion port of the third screw extruder to sequentially pass through a third cooling air device and a third filament splitter, then allowing the third filament to fall onto a second filament layer on a conveyer belt of a web former and synchronously moving and flatly paving the second filament layer along with the conveyer belt to form a third filament layer; the third component comprises the following components in parts by weight:
50-80 parts of polypropylene
2-8 parts of nano calcium carbonate
0.5-5 parts of monoglyceride
Chitin derivative 2-8 weight portions
So that the third fiber layer has a better anti-falling function;
s4, conveying the first fiber layer, the second fiber layer and the third fiber layer which are compounded to a drafting device through a conveying belt of a web former, conveying the fiber layers to a reinforcing device after the fiber layers are drafted by the drafting device, and reinforcing the fiber layers by the reinforcing device to obtain the anti-floc non-woven fabric.
The method for fully automatically producing the anti-floc non-woven fabric can be fully automatically realized, and has the advantages of no toxicity and no peculiar smell in the processing process and high production efficiency. The three fiber silk layers are respectively prepared by selecting special materials and compounded to form the anti-falling wadding non-woven fabric, so that the anti-falling wadding non-woven fabric has excellent performances of water resistance, antibiosis, mould resistance, water absorption and anti-falling wadding, and can be suitable for medical surgical drapes meeting clinical requirements.
Preferably, the first component, the second component and the third component are dried before use at the drying temperature of 100-120 ℃ for 20-30 min.
Preferably, the first cooling air device, the second cooling air device and the third cooling air device respectively comprise a low air speed section, an intermediate air speed section and a high air speed section which are sequentially connected from top to bottom along the falling direction of the fiber, wherein the length of the low air speed section is 0-25cm, the air speed of the cooling air is 280cm/s, the length of the intermediate air speed section is 10-30cm, the air speed of the cooling air is 500cm/s, the length of the high air speed section is 50-60cm, and the air speed of the cooling air is 600cm/s, so that the fiber is fully cooled and solidified, and meanwhile, the toughness of the fiber is improved.
Preferably, as shown in fig. 2, the first fiber dividing device, the second fiber dividing device and the third fiber dividing device each include a plurality of fiber dividing rods 1 having cross-sectional diameters gradually decreasing from top to bottom along a fiber falling direction to gradually increase, the fiber dividing rods are arranged at equal intervals, all the fiber dividing rods are connected with a power supply, after the fiber dividing rods are energized, can form an electrostatic field between the filament separating rods, and the filaments pass through the gaps between the filament separating rods to achieve the electrostatic filament separating effect, because the diameter of the cross section of the filament separating rod is gradually reduced from top to bottom to be gradually increased along the falling direction of the fiber, so that the gaps between the filament separating rods gradually increase from top to bottom along the falling direction of the fibers to gradually decrease, the gradually increased space is beneficial to uniformly dispersing the filaments and preventing filament breakage, and then the electrostatic effect can be enhanced by the gradually reduced space, which is beneficial to further uniform dispersion of the filaments and improvement of the continuity of the filaments and the uniformity of the net formation.
Preferably, as shown in fig. 3, the drafting device includes at least one positioning roller 2, at least two sets of roller sets 3, 4 and at least one shaping roller 5 arranged in sequence, each set of roller set includes two rollers whose surfaces can be heated, the distance between the two rollers is smaller than the sum of the radii of the two rollers, the first fiber yarn layer, the second fiber yarn layer and the third fiber yarn layer are combined to move in an S shape under the driving of the at least two sets of roller sets, so as to form a drafting force on the fiber yarn layer, and at the same time, the fiber yarn layer is heated on the surface of the roller in each set of roller set, so as to improve the drafting effect, and the effects of adjusting the drafting force and the drafting effect can be realized by adjusting the distance between the two rollers and the heating temperature in each set of roller. The shaping roller is a roller with a surface capable of being cooled, and the fiber layer is output after being conducted by the shaping roller. Preferably, the total draft multiple of all the roller sets is 3-6 times, the heating temperature is 85-120 ℃, and the cooling temperature is 10-30 ℃.
Preferably, the reinforcing device comprises a thorn wheel and a flat wheel, the fiber layer output after being drafted by the drafting device is input and passes through a gap between the thorn wheel and the flat wheel to be reinforced under pressure, the thorn wheel is used for acting on the third fiber layer, the flat wheel is used for acting on the first fiber layer, and the pressing of the thorn wheel enables the surface of the third fiber layer to have a better anti-falling-floc function.
This is explained in detail below by means of a few examples.
Example one
Taking the first component as follows in parts by weight: 70 parts of polypropylene, 8 parts of polytetrafluoroethylene and 5 parts of perfluoroalkyl acrylate; the second component comprises the following components in parts by weight: 60 parts of polypropylene, 17 parts of polyacrylamide modified biochar, 2 parts of nano-silver, 8 parts of chitosan and 8 parts of layered zirconium phosphate; the third component comprises the following components in parts by weight: 50 parts of polypropylene, 8 parts of nano calcium carbonate, 5 parts of monoglyceride and 8 parts of chitin derivative.
After the first component, the second component and the third component are dried, the first anti-floc non-woven fabric is prepared by adopting the method for fully automatically producing the anti-floc non-woven fabric, wherein the length of the low wind speed section of the first cooling wind device is 20cm, the wind speed of the cooling wind is 230cm/s, the length of the medium wind speed section is 10cm, the wind speed of the cooling wind is 300cm/s, the length of the high wind speed section is 50cm, and the wind speed of the cooling wind is 520 cm/s. The length of the low wind speed section of the second cooling wind device is 5cm, the wind speed of the cooling wind is 280cm/s, the length of the medium wind speed section is 15cm, the wind speed of the cooling wind is 320cm/s, the length of the high wind speed section is 55cm, and the wind speed of the cooling wind is 550 cm/s. The third cooling air device has the length of the low air speed section of 25cm and the air speed of the cooling air of 200cm/s, the length of the medium air speed section of 30cm and the air speed of the cooling air of 500cm/s, and the length of the high air speed section of 55cm and the air speed of the cooling air of 550 cm/s. The total draft multiple of all the roller sets is 5 times, the heating temperature is 95 ℃, and the cooling temperature is 10 ℃.
Example two
The first component is taken as the following components in parts by weight: 80 parts of polypropylene, 5 parts of polytetrafluoroethylene and 3 parts of perfluoroalkyl acrylate; the second component comprises the following components in parts by weight: 75 parts of polypropylene, 10 parts of polyacrylamide modified biochar, 2 parts of nano-silver, 5 parts of chitosan and 5 parts of layered zirconium phosphate; the third component comprises the following components in parts by weight: 65 parts of polypropylene, 5 parts of nano calcium carbonate, 2 parts of monoglyceride and 5 parts of chitin derivative.
And drying the first component, the second component and the third component, and then preparing and obtaining the second anti-lint non-woven fabric by adopting the full-automatic anti-lint non-woven fabric production method, wherein the device parameters are set as in the first embodiment.
Example three
The first component is taken as the following components in parts by weight: 90 parts of polypropylene, 2 parts of polytetrafluoroethylene and 2 parts of perfluoroalkyl acrylate; the second component comprises the following components in parts by weight: 90 parts of polypropylene, 2 parts of polyacrylamide modified biochar, 1 part of nano-silver, 2 parts of chitosan and 2 parts of layered zirconium phosphate; the third component comprises the following components in parts by weight: 80 parts of polypropylene, 2 parts of nano calcium carbonate, 0.5 part of monoglyceride and 2 parts of chitin derivative.
And drying the first component, the second component and the third component, and then preparing and obtaining a third anti-lint non-woven fabric by adopting the full-automatic anti-lint non-woven fabric production method, wherein the device parameters are set as in the first embodiment.
Respectively carrying out dry state, wet state and post-friction tests on the prepared first, second and third anti-floc non-woven fabrics, wherein the test method comprises the following steps: under the clean condition, an operator should wear gloves for an ISO 5-grade clean room to cut two groups of test pieces, wherein each group comprises 7 test pieces, one surface marked with a third fiber silk layer is a test surface, only 5 test piece data are actually tested in the test, and the two test pieces on the uppermost layer and the two test pieces on the lowermost layer are used as protection test pieces. The test results are the average of 5 test pieces. Floculation evaluation test method the results of the experiment were calculated for particles in the 3-25 μm specification range as shown in the following table:
| test item | Total falling wadding | Coefficient of floculation | |
| First anti-falling wadding non-woven fabric | Test surface | 687 | 2.83 |
| Second anti-falling wadding non-woven fabric | Test surface | 725 | 2.86 |
| Third anti-falling wadding non-woven fabric | Test surface | 834 | 2.92 |
As can be seen from the table above, the prepared first, second and third anti-lint non-woven fabrics have smaller lint falling coefficients in dry, wet and post-rubbing tests, have excellent lint falling resistance performance, and are very suitable for clinical use.
Example 2
The embodiment provides a clinical full-protection medical surgical drape, as shown in fig. 4, which comprises a first single cloth 101 and a second single cloth 102 which are connected in an overlapping manner, wherein the first single cloth and the second single cloth are both made of the anti-floc non-woven fabric prepared in the embodiment 1, and one surface of a third fiber layer is a surface directly contacting with a human body; the second sheet is located the middle part top surface of first sheet, both ends have alar part 1021 about it, two alar parts are for extending the both sides limit that surpasss first sheet for the alar part enlarges the operation list area of covering when opening, each position homoenergetic such as messenger's patient's arm can be effectively protected by the operation list, according to the specification of different operating tables, the alar part of expansion can hang in operating table both sides or expand and put on the operating table, realize all-round protection, do not contact with the operating table, reduce the cross infection risk. The unfolded wing part can also be used as a hand grasping part of an operating sheet when a patient is moved, so that the patient can be conveniently grasped and moved. Preferably, the first single cloth has a length L1 of 220-240cm, such as 230cm, and a width H1 of 80-100cm, such as 90 cm. The second single cloth has a length L2 of 150-170cm, such as 160cm, and a width H2 of 90-110cm, such as 100 cm.
Preferably, clinical medical surgical drape of protecting entirely still includes two at least upper portion location pull rings 103 and two at least lower part location pull rings 104, be equipped with the magic subsides 1031 that matches each other respectively on the corresponding position that can contact after inwards folding with this upper portion location pull ring of first single cloth bottom surface on the pull ring of upper portion location, be equipped with the magic subsides 1041 that match each other respectively on the corresponding position that can contact after inwards folding with this lower part location pull ring of first single cloth bottom surface on the pull ring of lower part location, thereby convenient location after folding, through setting up upper portion, lower part location pull ring, further make things convenient for operating personnel to snatch the surgical drape when removing the patient, effectively protect the stability of patient's health at the removal in-process, prevent to injure the patient.
Preferably, the clinical full-protection medical surgical drape further comprises at least two head positioning aluminum strips 105 which are arranged in a V shape, accord with ergonomics and are used for stabilizing the head against moving, and especially improve the safety when a patient is moved and lifted.
The embodiment also provides a method for fully automatically preparing the clinical full-protection medical surgical drape, which can seamlessly join the method for fully automatically producing the anti-floc non-woven fabric in the embodiment 1, so that the preparation of the clinical full-protection medical surgical drape from the raw materials is completed in one go and is fully automatically completed, and the method comprises the following steps of:
s5, conveying the anti-lint non-woven fabric to a first cutting machine and a second cutting machine in sequence, wherein the first cutting machine and the second cutting machine cut alternately to obtain a first single cloth and a second single cloth, the first cutting machine is used for cutting to obtain the first single cloth, and the second cutting machine is used for cutting to obtain the second single cloth;
s6, conveying the first single cloth to a laminating machine, and aligning the area to be laminated on the first single cloth to an output port of the laminating machine;
s7, adding the film laminating raw materials into an automatic stirrer, fully stirring and uniformly mixing, conveying the mixture into a feed hopper of a film laminating machine, completely drying the uniformly mixed film laminating raw materials by an automatic drying device in the feed hopper, starting a melt extrusion device of the film laminating machine, and laminating in a region to be laminated;
s8, conveying the second single cloth to the position above a film-spraying area to be sprayed after film spraying is completed, carrying out full-automatic photoelectric adjustment on opposite sides, enabling the first single cloth and the second single cloth to reach preset connection positions, sequentially leading the first single cloth and the second single cloth to sequentially pass through a balance guide roller, a back pressure roller, a silica gel roller, a composite cooling roller and a cylinder buffer floating guide roller, and then outputting the single cloth and the second single cloth to complete fusion connection of the first single cloth and the second single cloth, improving the bonding strength and material integrity, and avoiding obvious sense organ difference in a bonding area and influence on comfort.
Preferably, the method further comprises the following steps:
s9, conveying the connected first single cloth and second single cloth to a full-automatic pasting machine, completing pasting of the upper positioning pull ring and the lower positioning pull ring, the magic tapes on the bottom surface of the first single cloth, and further completing pasting of the head positioning aluminum strip.
Preferably, the method also comprises the steps of carrying out full-automatic folding and folding on the prepared clinical full-protection medical surgical drape, feeding the medical surgical drape into a sterilization device for sterilization, bagging, packaging and the like.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (8)
1. The method for fully automatically producing the anti-floc non-woven fabric is characterized by comprising the following steps of:
s1, inputting the first component into a first screw extruder, and enabling first filaments output from a first extrusion port of the first screw extruder to sequentially pass through a first cooling air device and a first filament divider, then enabling the first filaments to fall onto a conveyor belt of a web former and synchronously move and tile along the conveyor belt to form a first filament layer; the first component comprises the following components in parts by weight:
70-90 parts of polypropylene
2-8 parts of polytetrafluoroethylene
2-5 parts of perfluoroalkyl acrylate;
s2, inputting a second component into a second screw extruder, and allowing a second filament output from a second extrusion port of the second screw extruder to sequentially pass through a second cooling air device and a second filament splitter, and then allowing the second filament to fall onto a first filament layer on a conveyer belt of a web former and synchronously move and tile with the conveyer belt to form a second filament layer; the second component comprises the following components in parts by weight:
60-90 parts of polypropylene
2-17 parts of polyacrylamide modified biochar
1-2 parts of nano silver
2-8 parts of chitosan
2-8 parts of layered zirconium phosphate;
s3, inputting a third component into a third screw extruder, and allowing a third filament output from a third extrusion port of the third screw extruder to sequentially pass through a third cooling air device and a third filament splitter, then allowing the third filament to fall onto a second filament layer on a conveyer belt of a web former and synchronously moving and flatly paving the second filament layer along with the conveyer belt to form a third filament layer; the third component comprises the following components in parts by weight:
50-80 parts of polypropylene
2-8 parts of nano calcium carbonate
0.5-5 parts of monoglyceride
2-8 parts of chitin derivative;
s4, conveying the first fiber layer, the second fiber layer and the third fiber layer to a drafting device by a web former conveyer belt, conveying to a reinforcing device after drafting by the drafting device, reinforcing by the reinforcing device to obtain the anti-deflocculation non-woven fabric,
first branch silk ware, second divide silk ware and third to divide the silk ware and all include many cross section diameters and from top to bottom diminish gradually to the branch silk stick of grow gradually along fibre whereabouts direction, divide equidistant range between the silk stick, all divide the silk stick to be connected with the power, and long filament passes through from the clearance of dividing between the silk stick.
2. The method of claim 1, wherein the first, second and third components are dried prior to use.
3. The method as claimed in claim 2, wherein the first cooling air device, the second cooling air device and the third cooling air device each comprise a low air speed section, an intermediate air speed section and a high air speed section which are sequentially connected from top to bottom along the fiber falling direction, wherein the length of the low air speed section is 0-25cm, the air speed of the cooling air is 280cm/s, the length of the intermediate air speed section is 10-30cm, the air speed of the cooling air is 500cm/s, the length of the high air speed section is 50-60cm, and the air speed of the cooling air is 520 cm/s.
4. The method according to claim 3, wherein the drafting device comprises at least one positioning roller, at least two sets of rollers and at least one shaping roller which are arranged in sequence, each set of rollers comprises two rollers with heatable surfaces, the distance between the two rollers is smaller than the sum of the radii of the two rollers, and the first fiber silk layer, the second fiber silk layer and the third fiber silk layer which are compounded move in an S shape under the driving of the at least two sets of rollers; the shaping roller is a roller with a surface capable of being cooled, and the fiber layer is output after being conducted by the shaping roller.
5. The method according to claim 4, wherein the reinforcing means comprises a licker-in wheel and a flat wheel, the fiber layer outputted after being drafted by the drafting means is inputted and passes through a gap between the licker-in wheel and the flat wheel, the licker-in wheel is used for acting on the third fiber layer, and the flat wheel is used for acting on the first fiber layer.
6. A clinical full-protection medical surgical drape is characterized by comprising a first single cloth and a second single cloth which are connected in an overlapping mode, wherein the first single cloth and the second single cloth are both prepared into anti-floc non-woven fabrics by adopting the full-automatic anti-floc non-woven fabric production method according to any one of claims 1 to 5, and the surface of a third fiber silk layer is directly contacted with a human body; the second single cloth is positioned on the top surface of the middle part of the first single cloth, the left end and the right end of the second single cloth are provided with wing parts, and the two wing parts extend beyond the two side edges of the first single cloth.
7. The clinical full-protection medical surgical drape of claim 6, further comprising at least two upper positioning pull rings and at least two lower positioning pull rings, wherein the corresponding positions on the upper positioning pull rings and the corresponding positions on the first single cloth bottom surface where the upper positioning pull rings can contact after being folded inwards are respectively provided with magic tapes matched with each other, and the corresponding positions on the lower positioning pull rings and the corresponding positions on the first single cloth bottom surface where the lower positioning pull rings can contact after being folded inwards are respectively provided with magic tapes matched with each other.
8. The clinical full protective medical surgical drape of claim 7, further comprising at least two head positioning aluminum strips arranged in a V-shape for stabilizing the head against movement.
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