CN113103700A - Moisture-absorbing and warm-keeping mask and preparation method thereof - Google Patents

Moisture-absorbing and warm-keeping mask and preparation method thereof Download PDF

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Publication number
CN113103700A
CN113103700A CN202110453404.6A CN202110453404A CN113103700A CN 113103700 A CN113103700 A CN 113103700A CN 202110453404 A CN202110453404 A CN 202110453404A CN 113103700 A CN113103700 A CN 113103700A
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China
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needling
composite
moisture
short fiber
gear type
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CN202110453404.6A
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CN113103700B (en
Inventor
劳海晴
方瑞峰
张素晶
张宇皓
赵苑婷
李肖斌
钱程
李书卿
韩万里
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Jiaxing University
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Jiaxing University
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
    • 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
    • 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
    • A41D31/06—Thermally protective, e.g. insulating
    • A41D31/065—Thermally protective, e.g. insulating using 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
    • A41D31/12—Hygroscopic; Water retaining
    • A41D31/125—Moisture handling or wicking function through 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
    • A41D31/14—Air permeable, i.e. capable of being penetrated by gases
    • A41D31/145—Air permeable, i.e. capable of being penetrated by gases using layered materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/082—Melt spinning methods of mixed yarn
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D2500/00—Materials for garments
    • A41D2500/50—Synthetic resins or rubbers
    • A41D2500/52—Synthetic resins or rubbers in sheet form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/06—Vegetal fibres
    • B32B2262/062—Cellulose fibres, e.g. cotton
    • B32B2262/067—Wood 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2571/00—Protective equipment

Abstract

The invention discloses a moisture absorption and warm keeping mask and a preparation method thereof, and relates to the technical field of articles for daily use. According to the moisture-absorbing and warm-keeping mask provided by the invention, the prepared PP/PE composite superfine short fiber non-woven pile fabric has higher fiber opening rate through the preparation of the gear type PP/PE composite short fiber, the setting of the pre-needling and main needling process parameters in the needling reinforcing process and the setting of the needling pile process parameters, and the further prepared moisture-absorbing and warm-keeping mask has a gradient layer-by-layer filtering effect, high filtering efficiency, good air permeability and good moisture absorption and conduction performance, and meanwhile, the composite superfine short fiber pile layer of the PP/PE composite superfine short fiber non-woven pile fabric further improves the warm-keeping performance, so that the moisture-absorbing and warm-keeping mask provided by the invention has the high-efficiency filtering, moisture-absorbing and conduction performance and the warm-keeping performance, achieves the purposes of improving the warm-keeping performance of the mask and improving the technical effect of the man-machine relationship of the mask to glasses users in winter.

Description

Moisture-absorbing and warm-keeping mask and preparation method thereof
Technical Field
The invention relates to the technical field of articles for daily use, in particular to a moisture-absorbing and warm-keeping mask and a preparation method thereof.
Background
Nowadays, wearing the mask is a healthy living habit of people. However, for the user group wearing glasses, wearing the mask is a burden, which mainly appears as follows: when the mask is worn in summer, water vapor exhaled by the mouth and the nose is blocked by the mask and escapes from a gap between the mask and the face, and the water vapor is received by the surfaces of the glasses to generate fog; when the mask is worn in winter, the air exhaled by the mouth of a human body is far higher than outdoor air, so that the glasses are covered by hot air blocked by the mask to generate fog, particularly in southern areas, the air is wet and cold, the fog on the surfaces of the glasses is difficult to quickly disperse, and inconvenience and potential safety hazards are brought to the people who wear the glasses when the glasses are covered by the fog. On the other hand, the existing mask is cold in winter, is only of a thin three-layer structure, is blown by the northern wind with thorny bones when a user rides the battery car, and cannot play a good warm-keeping role.
In order to provide a mask with a warm-keeping function, the prior art provides the following technical scheme:
the invention patent 201210545247.2 relates to a heat exchange warm-keeping dust mask, which comprises an inner layer and an outer layer, and is characterized in that: a cavity is arranged between the inner layer and the outer layer, a heat exchange plate which divides the cavity into a left half and a right half is arranged in the cavity, a two-way valve is arranged on the near-mouth nose part of the inner layer, and an air inlet valve and an air outlet valve are arranged on the outer layer. The method is characterized in that: the heat exchange plate is a heat-conducting metal plate, and moisture-permeable pores and dustproof fibers are densely distributed on the metal plate. Although the mask disclosed by the invention has certain heat retention property, the mask is complex to manufacture, high in cost and difficult to implement; the invention discloses a thermal mask with a changeable inner layer thickness, which comprises a mask surface, wherein spring ropes are fixedly arranged on two sides of the mask surface, mounting blocks are arranged at four corners of the front surface of the mask surface, first movable shafts are arranged in the mounting blocks, accommodating boxes are connected and arranged on the outer surfaces of two sides of each spring rope, rotating shafts are arranged on the sides, far away from each other, in the accommodating boxes, one ends of the rotating shafts extend into the accommodating boxes, and winding rods are arranged at one ends of the rotating shafts in the accommodating boxes. The invention increases or reduces the warmth retention property by changing the thickness of the mask, and is realized by adopting some mechanical facilities on the mask, so that the mask is very inconvenient to wear due to the increased weight of the mask.
The invention discloses a patent CN202010580096.9, which relates to an antibacterial warm mask and a production process thereof, wherein the antibacterial warm mask comprises a left piece and a right piece, a connecting piece buckled on the bridge of the nose is arranged between the left piece and the right piece, the left piece and the right piece are rotatably connected through the connecting piece, and the inner side of the connecting piece is provided with a bending part jointed with the bridge of the nose. The left piece and the right piece are connected through the connecting piece, the bending part is arranged on the connecting piece, and the bending part is attached to the nose bridge, so that the antibacterial warm-keeping mask is relatively sealed with the face after the antibacterial warm-keeping mask is worn. The invention increases the sealing performance of the mask by adjusting the fit degree of the mask, thereby achieving the purpose of keeping warm.
The invention CN201711048864.0 discloses a detachable mask integrating temperature regulation and air filtration, which comprises a mask outer layer, a mask core layer and a mask inner layer in sequence; zippers are arranged on two sides of the outer layer or the inner layer of the mask, the mask core layer comprises a first lattice-shaped non-woven fabric layer and a second lattice-shaped non-woven fabric layer, and air filtering materials are filled in the first lattice-shaped non-woven fabric layer; the second latticed non-woven fabric layer is filled with heat storage and temperature regulation large capsules or microcapsules; the two sides of the mask are connected with ear belt lines. The second latticed non-woven fabric layer is a two-layer latticed heat-storage temperature-adjusting fiber woven fabric or non-woven fabric. Because the patent adopts the microcapsule finishing mask material as a warm-keeping means, and the microcapsule is a chemically synthesized material, the microcapsule is directly used for the breath of the mouth of a person, and has potential safety hazard.
In the process of implementing the invention, the inventor finds that the following problems exist in the related art:
the hygroscopicity and the warmth retention of the existing mask are generally poor, and hot air generated by breathing of a user can not be absorbed in time when the mask is worn in winter, so that the sight of the user wearing glasses is shielded by fog, and great harm is caused to life convenience and life safety of the user group wearing glasses.
Disclosure of Invention
The invention mainly aims to provide a moisture-absorbing and warm-keeping mask and a preparation method thereof, which are used for solving the technical problems of poor warm-keeping property of the mask and poor man-machine relationship of users wearing glasses in winter in the prior art, and achieving the technical effects of improving the warm-keeping property of the mask and improving the man-machine relationship of the mask to users wearing glasses in winter. The technical scheme of the invention is as follows:
according to a first aspect of embodiments of the present invention, there is provided a method for manufacturing a moisture absorbing and warm keeping mask, the method comprising:
respectively processing PP slices and PE slices through respective hoppers, extruders, metering pumps and filtering systems to obtain PP melt and PE melt, respectively feeding the PP melt and the PE melt into a spinning manifold for spinning, conveying the PP melt and the PE melt through respective independent melt distribution systems, compounding and extruding at a spinneret orifice of a gear type spinneret plate to form PP/PE melt trickle, cooling and molding the PP/PE melt trickle to obtain gear type PP/PE composite short fiber primary yarns, bundling, drafting, oiling, curling, shaping and cutting the gear type PP/PE composite short fiber primary yarns to obtain gear type PP/PE composite short fibers, wherein PP components in the gear type PP/PE composite short fibers are distributed on a gear type support part of the gear type PP/PE composite short fibers, and PE components are distributed on an interdental filling part on the peripheral side of the gear type support part, and the mass ratio of the PP component to the PE component is 60-70: 30-40 parts of;
weighing, cotton feeding, coarse opening, cotton mixing, fine opening, cotton feeding in an air pressure cotton box, cross lapping, needling reinforcing and winding the gear type PP/PE composite short fibers to obtain the PP/PE composite short fiber non-woven gigging base fabric, wherein the gram weight of the PP/PE composite short fiber non-woven gigging base fabric is 100-2The thickness is 1.5-3.5mm, and the fiber opening rate is 50-60%; the needling reinforcement procedure comprises a preliminary needling and four main needling, wherein the preliminary needling adopts a lower needling type, the first main needling adopts an upper needling type, the second main needling adopts a lower needling type, the third main needling adopts an upper needling type, and the fourth main needling adopts a lower needling type;
unreeling the PP/PE composite short fiber non-woven napping base fabric, then sending the base fabric into a needle napping machine for needle napping, so that the PP/PE composite short fiber non-woven napping base fabric is napped under the common friction action of a preset number of nylon yarns on a supporting mesh plate of the needle napping machine, and then winding to obtain the PP/PE composite superfine short fiber non-woven napping fabric, wherein the surface of the PP/PE composite superfine short fiber non-woven napping fabric is provided with a composite superfine short fiber napping layer, the napping rate of the composite superfine short fiber napping layer is 70-80%, and the fiber fineness is 0.16-0.25D;
the method comprises the steps of stacking the PP/PE composite superfine short fiber non-woven fleece and moisture-conducting spunlace non-woven fabric, cutting the stacked PP/PE composite superfine short fiber non-woven fleece and moisture-conducting spunlace non-woven fabric into a size of length multiplied by width = (14-17.5) × (8-9.5), fixing the stacked PP/PE composite superfine short fiber non-woven fleece and moisture-conducting spunlace non-woven fabric into a mask cover surface through ultrasonic heat sealing, and compounding the mask cover surface, a nose bridge strip and an ear band to obtain the moisture-absorbing and warm-keeping mask.
In a preferred embodiment, the extruder extrusion temperature for the PP chips comprises: the temperature of the first zone is 271-274 ℃, the temperature of the second zone is 275-278 ℃, the temperature of the third zone is 279-282 ℃, the temperature of the fourth zone is 280-283 ℃, and the temperature of the fifth zone is 281-285 ℃; the temperature of a spinning box corresponding to the PP slice is 285-289 ℃; the extruder extrusion temperature corresponding to the PE slices comprises: the temperature of the first zone is 276-279 ℃, the temperature of the second zone is 280-285 ℃, the temperature of the third zone is 284-290 ℃, the temperature of the fourth zone is 288-294 ℃, and the temperature of the fifth zone is 290-295 ℃; the temperature of a spinning box corresponding to the PP slice is 292-296 ℃; the temperature of the cross air blow adopted in the cooling forming procedure is 20.5-23.6 ℃, and the cooling air speed is 1.1-1.4 m/s; the relative humidity corresponding to the gear type PP/PE melt trickle is 70-80%, and the spinning speed is 900-1200 m/min.
In a preferred embodiment, the gear type PP/PE composite short fiber primary yarn adopts the drawing multiple of 3.5-5.5, the oiling rate of 0.85-1.2%, the number of crimps of 12-14/inch, the setting temperature of 108-; the linear density of the fibers of the gear type PP/PE composite short fibers is 2-3D.
In a preferred embodiment, the working parameters adopted by the pre-needling in the needling reinforcement process comprise: the density of the implanted needle is 5000 pieces/m, a 38-gauge triangular needle is selected, the number of hooked thorns per edge is 2, the initial tooth pitch is 6.3mm, the tooth shape of the hooked thorns is G tooth shape, the needling frequency is 600 plus 700 thorns/min, the needling depth is 9-10 mm, and the draft ratio is 1.1-1.2.
In a preferred embodiment, the speed of the four main needling processes in the needling reinforcement process is 2.5-3.5 m/min, the needle plate needling density of the main needling process is 7000 needles, a 40-gauge triangular needle is selected, and the quantity of hook needling per edge is 3; wherein the initial pitch of the pricking pins used in the first main pricking is 6.3mm, the tooth type of the hook pricking is G tooth type, the pricking frequency is 680-720 pricking/min, and the pricking depth is 8.5-9.2 mm; the initial pitch of the felting needles used for the second main needling is 4.8mm, the tooth profile of the hook needling is G tooth profile, the needling frequency is 700 plus 750 needling/min, the needling depth is 8-8.5mm, the initial pitch of the felting needles used for the third main needling is 3.3mm, the tooth profile of the hook needling is Y tooth profile, the needling frequency is 750 plus 800 needling/min, the needling depth is 7.2-8m, the initial pitch of the felting needles used for the fourth main needling is 1.5mm, the tooth profile of the hook needling is Y tooth profile, the needling frequency is 800 plus 850 needling/min, and the needling depth is 7-8 mm.
In a preferred embodiment, the speed of the needle punching raising process is 2-3 m/min, the needle density of a needle plate is 9000 needles/m, 40 crown-shaped needles are selected, the quantity of each rib is 1, the needle punching frequency is 1200-1300 needles/min, and the needle punching depth is 2.5-3.5 mm; the net supporting plate of the needling raising machine consists of a preset number of brushes, and the brushes are made of materials with specific gravity of 1.06g/cm3The head of the DuPont nylon wire is conical, the width of each brush is 38-42mm, the length of each brush is 12-15cm, and the height of the DuPont nylon wire on each brush is 20-30 mm.
In a preferred embodiment, the moisture-guiding spunlace nonwoven fabric is a wood pulp fiber/polyester fiber composite spunlace nonwoven fabric, wherein the wood pulp fiber is used for absorbing and guiding moisture, the polyester fiber is used for guiding moisture to the external environment, the mass percentage of the wood pulp fiber in the wood pulp fiber/polyester fiber composite spunlace nonwoven fabric is 55-60%, the mass percentage of the polyester fiber in the polyester fiber composite spunlace nonwoven fabric is 40-45%, and the gram weight of the moisture-guiding spunlace nonwoven fabric is 40g/m2The thickness is 0.08 mm.
According to a second aspect of the embodiments of the present invention, there is provided an absorbent and warm-keeping mask, wherein the absorbent and warm-keeping mask is prepared by any one of the above-mentioned methods, the mask cover of the absorbent and warm-keeping mask is composed of an inner layer of PP/PE composite ultra-fine short fiber nonwoven fleece and an outer layer of moisture-conductive spunlace nonwoven fabric, the surface of the PP/PE composite ultra-fine short fiber nonwoven fleece has a composite ultra-fine short fiber fleece layer, both the PP/PE composite ultra-fine short fiber nonwoven fleece and the composite ultra-fine short fiber fleece layer are composed of gear-type PP/PE composite short fibers, in the gear-type PP/PE composite short fibers, PP components are distributed on a gear-type support portion of the gear-type PP/PE composite short fibers, PE components are distributed on an interdental filling portion on the peripheral side of the gear-type support portion, and the mass ratio of the PP component to the PE component is 60-70: 30-40.
Compared with the prior art, the moisture-absorbing and warm-keeping mask and the preparation method thereof provided by the invention have the following advantages:
1) the process is innovative. The gear type PP/PE composite short fiber prepared by the invention has the advantages that the PP component in the gear type PP/PE composite short fiber is distributed on the gear type support part of the gear type PP/PE composite short fiber, the PE component is distributed on the interdental filling part on the peripheral side of the gear type support part, the boundary line length of the PP component and the PE component distributed on the fiber cross section is smaller, the stripping and fiber splitting between the two components are easier to carry out, the difficulty of the subsequent fiber splitting into superfine fiber is reduced, in the process of manufacturing the needle punched non-woven pile fabric, the needle is enabled to separate the gear type support part PP and the interdental filling part PE of the gear type composite short fiber to obtain partial fiber splitting through the special collocation between different needle plates, the special selection of the needle and the specially designed needle punching process when the needle penetrates the PP/PE composite short fiber up and down, the opening rate of the base layer of the needle-punched non-woven napping cloth reaches 50-60%, and then the composite short fibers forming the napping surface are further opened under the puncturing action of the crown felting needles and the friction action of the nylon brush filaments in the napping process, the opening rate reaches 70-80%, and the traditional chemical after-finishing and other high-energy-consumption opening modes are avoided.
2) Gradient filtration and good comfort. The opening rate of the PP/PE composite short fiber non-woven napped base fabric prepared by the invention reaches 50-60%, the opening rate of the composite superfine short fiber napped layer reaches 70-80%, the linear density of fibers after opening reaches 0.16-0.25D, when the mask is manufactured, the composite superfine short fiber napped layer of the PP/PE composite short fiber non-woven napped base fabric is in inward contact with the face, and the non-napped surface faces outwards, so that the gradient filtering effect on bacterial and virus particles entering the mask from the outside is achieved. The moisture-absorbing and warm-keeping mask prepared by the invention has high-efficiency gradient filtering effect, good air permeability, small air resistance and good wearing comfort, and can prolong the service life of the mask.
3) Has good moisture absorption and heat retention. The innermost layer of the moisture-absorbing and warm-keeping mask provided by the invention is the composite superfine short fiber velvet layer, the huge specific surface area of the composite superfine short fibers in the velvet layer can quickly absorb hot air exhaled by a mouth, the hot air is quickly transmitted to the outer layer of the mask through the composite superfine short fibers in the substrate layer, and the wood pulp fibers in the outer layer immediately absorb the exhausted moisture and are exhausted into the outside air through the polyester fibers, so that the glasses are prevented from generating fog; on the other hand, the composite superfine short fiber velvet layer also provides a good warm-keeping effect for the mask, and meanwhile, the gear type PP/PE composite short fibers are soft and comfortable in touch due to the adoption of PE, so that the skin of the face is protected from being frozen in cold winter, and the mask has warm, soft and fine feeling when being worn in winter.
In summary, according to the moisture-absorbing and warm-keeping mask provided by the invention, the prepared PP/PE composite superfine short fiber non-woven pile fabric has a high fiber opening rate through the preparation of the gear type PP/PE composite short fiber, the setting of the pre-needling and main needling process parameters in the needling reinforcement process and the setting of the needling pile process parameters, and the further prepared moisture-absorbing and warm-keeping mask has a gradient layer-by-layer filtering effect, high filtering efficiency, good air permeability and good moisture absorption and conduction properties, and meanwhile, the composite superfine short fiber pile layer of the PP/PE composite superfine short fiber non-woven pile fabric further improves the warm-keeping property, so that the moisture-absorbing and warm-keeping mask provided by the invention has high-efficiency filtering, moisture absorption and conduction properties and warm-keeping properties, achieves the improvement of the warm-keeping property of the mask, and improves the technical effect of the mask on man-machine relationship of users wearing glasses in winter.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a method flow diagram illustrating a method of making a moisture absorbing and thermal mask according to an exemplary embodiment.
FIG. 2 is a schematic cross-sectional view of a gear type PP/PE composite staple fiber shown in accordance with an exemplary embodiment.
Fig. 3 is a schematic view of an absorbent thermal mask according to an exemplary embodiment.
Detailed Description
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a method flowchart illustrating a method of manufacturing an absorbent thermal mask according to an exemplary embodiment, the method of manufacturing the absorbent thermal mask, as shown in fig. 1, including:
step 100: respectively processing PP slices and PE slices through respective hoppers, extruders, metering pumps and filtering systems to obtain PP melt and PE melt, respectively feeding the PP melt and the PE melt into a spinning manifold for spinning, conveying the PP melt and the PE melt through respective independent melt distribution systems, compounding and extruding at a spinneret orifice of a gear type spinneret plate to form PP/PE melt trickle, cooling and molding the PP/PE melt trickle to obtain gear type PP/PE composite short fiber primary yarns, bundling, drafting, oiling, curling, shaping and cutting the gear type PP/PE composite short fiber primary yarns to obtain gear type PP/PE composite short fibers, wherein PP components in the gear type PP/PE composite short fibers are distributed on a gear type support part of the gear type PP/PE composite short fibers, and PE components are distributed on an interdental filling part on the peripheral side of the gear type support part, and the mass ratio of the PP component to the PE component is 60-70: 30-40.
In a possible embodiment, the interdental filling portions are uniformly distributed around the gear type holder portion, and preferably, the interdental filling portions have an elliptical shape.
In a preferred embodiment, the extruder extrusion temperature for the PP chips comprises: the temperature of the first zone is 271-274 ℃, the temperature of the second zone is 275-278 ℃, the temperature of the third zone is 279-282 ℃, the temperature of the fourth zone is 280-283 ℃, and the temperature of the fifth zone is 281-285 ℃; the temperature of a spinning box corresponding to the PP slice is 285-289 ℃; the extruder extrusion temperature corresponding to the PE slices comprises: the temperature of the first zone is 276-279 ℃, the temperature of the second zone is 280-285 ℃, the temperature of the third zone is 284-290 ℃, the temperature of the fourth zone is 288-294 ℃, and the temperature of the fifth zone is 290-295 ℃; the temperature of a spinning box corresponding to the PP slice is 292-296 ℃; the temperature of the cross air blow adopted in the cooling forming procedure is 20.5-23.6 ℃, and the cooling air speed is 1.1-1.4 m/s; the relative humidity corresponding to the gear type PP/PE melt trickle is 70-80%, and the spinning speed is 900-1200 m/min.
In a preferred embodiment, the gear type PP/PE composite short fiber primary yarn adopts the drawing multiple of 3.5-5.5, the oiling rate of 0.85-1.2%, the number of crimps of 12-14/inch, the setting temperature of 108-; the linear density of the fibers of the gear type PP/PE composite short fibers is 2-3D.
To better illustrate the gear type PP/PE composite staple fiber provided by the present invention, in one possible embodiment, a cross-sectional view of the gear type PP/PE composite staple fiber is provided as shown in fig. 2, a gear type support portion a of the gear type PP/PE composite staple fiber is a PP component, an interdental filling portion B around the gear type support portion a is a PE component, and 12 interdental filling portions B are uniformly distributed around the gear type support portion a.
Step 200: the tooth is fixedThe wheel type PP/PE composite short fiber is subjected to the procedures of weighing, cotton feeding, coarse opening, cotton mixing, fine opening, cotton feeding in an air pressure cotton box, cross lapping, needling reinforcement and winding to prepare the PP/PE composite short fiber non-woven napping base fabric, wherein the gram weight of the PP/PE composite short fiber non-woven napping base fabric is 100-2The thickness is 1.5-3.5mm, and the fiber opening rate is 50-60%; the needling reinforcing process comprises one needling and four main spines, wherein the needling adopts a lower needling mode, the first main spine adopts an upper needling mode, the second main spine adopts a lower needling mode, the third main spine adopts an upper needling mode, and the fourth main spine adopts a lower needling mode.
In a preferred embodiment, the working parameters adopted by the pre-needling in the needling reinforcement process comprise: the density of the implanted needle is 5000 pieces/m, a 38-gauge triangular needle is selected, the number of hooked thorns per edge is 2, the initial tooth pitch is 6.3mm, the tooth shape of the hooked thorns is G tooth shape, the needling frequency is 600 plus 700 thorns/min, the needling depth is 9-10 mm, and the draft ratio is 1.1-1.2.
The gear type PP/PE composite short fiber is pre-needled to obtain a PP/PE composite short fiber non-woven fiber web with the weight of 100g and the thickness of 6.5 mm.
In a preferred embodiment, the speed of the four main needling processes in the needling reinforcement process is 2.5-3.5 m/min, the needle plate needling density of the main needling process is 7000 needles, a 40-gauge triangular needle is selected, and the quantity of hook needling per edge is 3; wherein the initial pitch of the pricking pins used in the first main pricking is 6.3mm, the tooth type of the hook pricking is G tooth type, the pricking frequency is 680-720 pricking/min, and the pricking depth is 8.5-9.2 mm; the initial pitch of the felting needles used for the second main needling is 4.8mm, the tooth profile of the hook needling is G tooth profile, the needling frequency is 700 plus 750 needling/min, the needling depth is 8-8.5mm, the initial pitch of the felting needles used for the third main needling is 3.3mm, the tooth profile of the hook needling is Y tooth profile, the needling frequency is 750 plus 800 needling/min, the needling depth is 7.2-8m, the initial pitch of the felting needles used for the fourth main needling is 1.5mm, the tooth profile of the hook needling is Y tooth profile, the needling frequency is 800 plus 850 needling/min, and the needling depth is 7-8 mm.
In one possible embodiment, the pre-needling machine and the main needling machine are distributed in a disordered distribution manner.
Step 300: and (2) unreeling the PP/PE composite short fiber non-woven napping base fabric, then feeding the unreeled PP/PE composite short fiber non-woven napping base fabric into a needle napping machine for needle napping, so that the PP/PE composite short fiber non-woven napping base fabric is napped under the common friction action of a preset number of nylon yarns on a supporting net plate of the needle napping machine, and then winding to obtain the PP/PE composite superfine short fiber non-woven napping fabric, wherein the surface of the PP/PE composite superfine short fiber non-woven napping fabric is provided with a composite superfine short fiber layer, the napping rate of the composite superfine short fiber layer is 70-80%, and the fiber fineness is 0.16-0.25D.
In a preferred embodiment, the speed of the needle punching raising process is 2-3 m/min, the needle density of a needle plate is 9000 needles/m, 40 crown-shaped needles are selected, the quantity of each rib is 1, the needle punching frequency is 1200-1300 needles/min, and the needle punching depth is 2.5-3.5 mm; the net supporting plate of the needling raising machine consists of a preset number of brushes, and the brushes are made of materials with specific gravity of 1.06g/cm3The head of the DuPont nylon wire is conical, the width of each brush is 38-42mm, the length of each brush is 12-15cm, and the height of the DuPont nylon wire on each brush is 20-30 mm.
In the needling and napping process, the crown felting needles carry part of opened gear type PP/PE composite short fibers to be pierced among countless nylon yarns of the supporting net plate, the pierced part of the gear type PP/PE composite short fibers are further opened under the friction of the nylon yarns, and after the crown felting needles are pulled out of the nylon yarns, the gear type PP/PE composite short fibers pierced into the nylon yarns are stripped to form a composite superfine short fiber napping layer on the surface of the PP/PE composite short fiber non-woven napping base cloth.
Step 400: the method comprises the steps of stacking the PP/PE composite superfine short fiber non-woven fleece and moisture-conducting spunlace non-woven fabric, cutting the stacked PP/PE composite superfine short fiber non-woven fleece and moisture-conducting spunlace non-woven fabric into a size of length multiplied by width = (14-17.5) × (8-9.5), fixing the stacked PP/PE composite superfine short fiber non-woven fleece and moisture-conducting spunlace non-woven fabric into a mask cover surface through ultrasonic heat sealing, and compounding the mask cover surface, a nose bridge strip and an ear band to obtain the moisture-absorbing and warm-keeping mask.
In a preferred embodiment, the moisture-guiding spunlace nonwoven fabric is a wood pulp fiber/polyester fiber composite spunlace nonwoven fabric, wherein the wood pulp fiber is used for absorbing and guiding moisture, the polyester fiber is used for guiding moisture to the external environment, the mass percentage of the wood pulp fiber in the wood pulp fiber/polyester fiber composite spunlace nonwoven fabric is 55-60%, the mass percentage of the polyester fiber in the polyester fiber composite spunlace nonwoven fabric is 40-45%, and the gram weight of the moisture-guiding spunlace nonwoven fabric is 40g/m2The thickness is 0.08 mm.
Further, fig. 3 shows a schematic view of a moisture-absorbing and warm-keeping mask prepared according to an embodiment of the present invention, in the moisture-absorbing and warm-keeping mask shown in fig. 3, a is a composite superfine short fiber pile layer, b is a PP/PE composite superfine short fiber non-woven pile fabric, and c is a moisture-guiding spunlace non-woven fabric.
In order to better understand the moisture-absorbing and warm-keeping mask and the method for manufacturing the same provided by the present invention, practical production examples 1, 2, and 3 of the moisture-absorbing and warm-keeping mask are further illustrated in the present invention.
Example 1
(1) Respectively processing PP slices and PE slices through respective hoppers, extruders, metering pumps and filtering systems to obtain PP melt and PE melt, respectively feeding the PP melt and the PE melt into a spinning manifold for spinning, conveying the PP melt and the PE melt through respective independent melt distribution systems, compounding and extruding at a spinneret orifice of a gear type spinneret plate to form PP/PE melt trickle, cooling and molding the PP/PE melt trickle to obtain gear type PP/PE composite short fiber primary yarns, bundling, drafting, oiling, curling, shaping and cutting the gear type PP/PE composite short fiber primary yarns to obtain gear type PP/PE composite short fibers, wherein PP components in the gear type PP/PE composite short fibers are distributed on a gear type support part of the gear type PP/PE composite short fibers, and PE components are distributed on an interdental filling part on the peripheral side of the gear type support part, and the mass ratio of the PP component to the PE component is 60: 40.
the extruder extrusion temperature corresponding to the PP slices comprises: the temperature of the first zone is 271 ℃, the temperature of the second zone is 275 ℃, the temperature of the third zone is 279 ℃, the temperature of the fourth zone is 280 ℃ and the temperature of the fifth zone is 281 ℃; the temperature of a spinning box corresponding to the PP slice is 285 ℃; the extruder extrusion temperature corresponding to the PE slices comprises: the temperature of the first zone is 276 ℃, the temperature of the second zone is 280 ℃, the temperature of the third zone is 284 ℃, the temperature of the fourth zone is 288 ℃, and the temperature of the fifth zone is 290 ℃; the temperature of a spinning box corresponding to the PP slices is 292 ℃; the lateral blowing temperature adopted in the cooling forming procedure is 20.5 ℃, and the cooling wind speed is 1.1 m/s; the relative humidity corresponding to the gear type PP/PE melt trickle is 70%, and the spinning speed is 900 m/min.
The gear type PP/PE composite short fiber raw silk has the advantages that the stretching multiple is 3.5, the oiling rate is 0.85%, the number of crimps is 12/inch, the setting temperature is 118 ℃, and the cutting length is 51 mm; the linear density of the fibers of the gear type PP/PE composite short fibers is 3D.
(2) Weighing, cotton feeding, coarse opening, cotton mixing, fine opening, cotton feeding in an air pressure cotton box, cross lapping, needling reinforcing and winding the gear type PP/PE composite short fibers to obtain the PP/PE composite short fiber non-woven napping base fabric, wherein the grammage of the PP/PE composite short fiber non-woven napping base fabric is 1180g/m2The thickness is 3.5mm, and the fiber opening rate is 50 percent; the needling reinforcing process comprises one needling and four main spines, wherein the needling adopts a lower needling mode, the first main spine adopts an upper needling mode, the second main spine adopts a lower needling mode, the third main spine adopts an upper needling mode, and the fourth main spine adopts a lower needling mode.
The working parameters adopted by the pre-needling in the needling reinforcement process comprise: the planting needle density is 5000 pieces/m, a 38-gauge triangular needle is selected, the quantity of hook-pricks per edge is 2, the initial tooth pitch is 6.3mm, the tooth form of the hook-prick is G tooth form, the pricking frequency is 600 pricks/min, the pricking depth is 9mm, and the drafting ratio is 1.1.
In the needling reinforcement process, the speed of four main needling processes is 3.5 m/min, the needle plate needling density of the main needling process is 7000 needles, a number of triangular needles with 40 needle numbers is selected, and the number of hook needling per edge is 3; wherein the initial pitch of the felting needles used in the first main needling is 6.3mm, the tooth type of the hook needling is G tooth type, the needling frequency is 680 needling/min, and the needling depth is 8.5 mm; the initial pitch of the felting needles used for the second main needling is 4.8mm, the tooth profile of the hook needling is G tooth profile, the needling frequency is 700 needling/min, the needling depth is 8mm, the initial pitch of the felting needles used for the third main needling is 3.3mm, the tooth profile of the hook needling is Y tooth profile, the needling frequency is 750 needling/min, the needling depth is 7.2m, the initial pitch of the felting needles used for the fourth main needling is 1.5mm, the tooth profile of the hook needling is Y tooth profile, the needling frequency is 800 needling/min, and the needling depth is 7 mm.
(3) And (2) unreeling the PP/PE composite short fiber non-woven napping base fabric, then feeding the unreeled PP/PE composite short fiber non-woven napping base fabric into a needle napping machine for needle napping, so that the PP/PE composite short fiber non-woven napping base fabric is napped under the common friction action of a preset number of nylon yarns on a supporting net plate of the needle napping machine, and then winding to obtain the PP/PE composite superfine short fiber non-woven napping fabric, wherein the surface of the PP/PE composite superfine short fiber non-woven napping fabric is provided with a composite superfine short fiber layer, the napping rate of the composite superfine short fiber layer is 70%, and the fiber fineness is 0.25D.
The speed of the needle punching raising process is 3 m/min, the needle density of a needle plate is 9000 needles/m, a crown-shaped needle with the needle number of 40 is selected, the quantity of hook insertions per edge is 1, the needle punching frequency is 1200 insertions/min, and the needle punching depth is 2.5 mm; the net supporting plate of the needling raising machine consists of a preset number of brushes, and the brushes are made of materials with specific gravity of 1.06g/cm3The head of the DuPont nylon wire is conical, the width of each brush is 38mm, the length of each brush is 12cm, and the height of the DuPont nylon wire on each brush is 20-25 mm.
(4) The method comprises the steps of stacking PP/PE composite superfine short fiber non-woven fleece and moisture-conducting spunlace non-woven fabric, cutting the stacked PP/PE composite superfine short fiber non-woven fleece and moisture-conducting spunlace non-woven fabric into a size with the length multiplied by the width =15 multiplied by 9.5cm, fixing the stacked PP/PE composite superfine short fiber non-woven fleece and moisture-absorbing warm-keeping mask by adopting ultrasonic heat seal, and compounding the mask with a nose bridge strip and an ear band to obtain the moisture-absorbing warm-keeping mask.
The moisture-guiding spunlace nonwoven fabric is a wood pulp fiber/polyester fiber composite spunlace nonwoven fabric, wherein the wood pulp fiber is used for absorbing moisture and guidingWet, polyester fiber is used for leading moisture to external environment, wood pulp fiber mass percent is 55% in the wood pulp fiber/polyester fiber composite spunlace nonwoven fabric, polyester fiber mass percent is 45%, the gram weight of leading wet type spunlace nonwoven fabric is 40g/m2The thickness is 0.08 mm.
Example 2
(1) Respectively processing PP slices and PE slices through respective hoppers, extruders, metering pumps and filtering systems to obtain PP melt and PE melt, respectively feeding the PP melt and the PE melt into a spinning manifold for spinning, conveying the PP melt and the PE melt through respective independent melt distribution systems, compounding and extruding at a spinneret orifice of a gear type spinneret plate to form PP/PE melt trickle, cooling and molding the PP/PE melt trickle to obtain gear type PP/PE composite short fiber primary yarns, bundling, drafting, oiling, curling, shaping and cutting the gear type PP/PE composite short fiber primary yarns to obtain gear type PP/PE composite short fibers, wherein PP components in the gear type PP/PE composite short fibers are distributed on a gear type support part of the gear type PP/PE composite short fibers, and PE components are distributed on an interdental filling part on the peripheral side of the gear type support part, and the mass ratio of the PP component to the PE component is 60: 40.
the extruder extrusion temperature corresponding to the PP slices comprises: the temperature of the first zone is 273 ℃, the temperature of the second zone is 276 ℃, the temperature of the third zone is 280 ℃, the temperature of the fourth zone is 282 ℃, and the temperature of the fifth zone is 284 ℃; the temperature of a spinning box corresponding to the PP slice is 287 ℃; the extruder extrusion temperature corresponding to the PE slices comprises: the temperature of the first zone is 278 ℃, the temperature of the second zone is 283 ℃, the temperature of the third zone is 288 ℃, the temperature of the fourth zone is 290 ℃ and the temperature of the fifth zone is 292 ℃; the temperature of a spinning box corresponding to the PP slices is 294 ℃; the lateral blowing temperature adopted in the cooling forming procedure is 20.1 ℃, and the cooling wind speed is 1.3 m/s; the relative humidity corresponding to the gear type PP/PE melt trickle is 75%, and the spinning speed is 1000 m/min.
The gear type PP/PE composite short fiber raw silk has the advantages that the stretching multiple is 4.2, the oiling rate is 1.05%, the number of crimps is 13/inch, the setting temperature is 110 ℃, and the cutting length is 65 mm; the linear density of the fibers of the gear type PP/PE composite short fibers is 2.5D.
(2) Weighing and feeding cotton, coarsely opening and mixing the cotton, finely opening the cotton, feeding the cotton by an air pressure cotton box, cross lapping, needling and reinforcing the short fiber, and winding the short fiber to obtain the PP/PE composite short fiber non-woven napping base fabric, wherein the grammage of the PP/PE composite short fiber non-woven napping base fabric is 140g/m2The thickness is 2.02mm, and the fiber opening rate is 55 percent; the needling reinforcing process comprises one needling and four main spines, wherein the needling adopts a lower needling mode, the first main spine adopts an upper needling mode, the second main spine adopts a lower needling mode, the third main spine adopts an upper needling mode, and the fourth main spine adopts a lower needling mode.
The working parameters adopted by the pre-needling in the needling reinforcement process comprise: the planting needle density is 5000 pieces/m, a 38-gauge triangular needle is selected, the quantity of hook-pricks per edge is 2, the initial tooth pitch is 6.3mm, the tooth form of the hook-prick is G tooth form, the needling frequency is 650 pricks/min, the needling depth is 9.5 mm, and the draft ratio is 1.2.
In the needling reinforcement process, the speed of four main needling processes is 3 m/min, the needle plate needling density of the main needling process is 7000 needles, the number of the selected triangular needles is 40, and the quantity of each prismatic hook needling is 3; wherein the initial pitch of the pricking pins used in the first main pricking is 6.3mm, the tooth type of the hook pricking is G tooth type, the pricking frequency is 720 pricking/min, and the pricking depth is 8.9 mm; the initial pitch of the felting needles used for the second main needling is 4.8mm, the tooth profile of the hook needling is G tooth profile, the needling frequency is 720 needling/min, the needling depth is 8.2mm, the initial pitch of the felting needles used for the third main needling is 3.3mm, the tooth profile of the hook needling is Y tooth profile, the needling frequency is 780 needling/min, the needling depth is 7.6m, the initial pitch of the felting needles used for the fourth main needling is 1.5mm, the tooth profile of the hook needling is Y tooth profile, the needling frequency is 828 needling/min, and the needling depth is 7.5 mm.
(3) And (2) unreeling the PP/PE composite short fiber non-woven napping base fabric, then feeding the unreeled PP/PE composite short fiber non-woven napping base fabric into a needle napping machine for needle napping, so that the PP/PE composite short fiber non-woven napping base fabric is napped under the common friction action of a preset number of nylon yarns on a supporting net plate of the needle napping machine, and then winding to obtain the PP/PE composite superfine short fiber non-woven napping fabric, wherein the surface of the PP/PE composite superfine short fiber non-woven napping fabric is provided with a composite superfine short fiber napping layer, the napping rate of the composite superfine short fiber napping layer is 75%, and the fiber fineness is 0.2D.
The speed of the needle punching raising process is 2.5m/min, the needle density of a needle plate is 9000 needles/m, a crown-shaped needle with the needle number of 40 is selected, the quantity of each ridge of the crown-shaped needle is 1, the needle punching frequency is 1250 punches/min, and the needle punching depth is 3 mm; the net supporting plate of the needling raising machine consists of a preset number of brushes, and the brushes are made of materials with specific gravity of 1.06g/cm3The head of the DuPont nylon wire is conical, the width of each brush is 40mm, the length of each brush is 14cm, and the height of the DuPont nylon wire on each brush is 22-25 mm.
(4) The method comprises the steps of stacking the PP/PE composite superfine short fiber non-woven fleece and the moisture-conducting spunlace non-woven fabric, cutting the stacked PP/PE composite superfine short fiber non-woven fleece and the moisture-conducting spunlace non-woven fabric into a size with the length multiplied by the width =14 multiplied by 8cm, fixing the stacked PP/PE composite superfine short fiber non-woven fleece and the moisture-absorbing thermal-insulation mask by ultrasonic heat sealing, and compounding the mask surface with a nose bridge strip and an ear band to obtain the moisture-absorbing thermal-insulation mask.
Lead wet type spunlace nonwoven is wood pulp fiber/polyester fiber composite spunlace nonwoven, and wherein, wood pulp fiber is used for the moisture absorption and leads wet, and polyester fiber is used for leading moisture to external environment, wood pulp fiber mass percent is 55% in the wood pulp fiber/polyester fiber composite spunlace nonwoven, polyester fiber mass percent is 45%, it is 40g/m gram weight of wet type spunlace nonwoven to lead2The thickness is 0.08 mm.
Example 3
(1) Respectively processing PP slices and PE slices through respective hoppers, extruders, metering pumps and filtering systems to obtain PP melt and PE melt, respectively feeding the PP melt and the PE melt into a spinning manifold for spinning, conveying the PP melt and the PE melt through respective independent melt distribution systems, compounding and extruding at a spinneret orifice of a gear type spinneret plate to form PP/PE melt trickle, cooling and molding the PP/PE melt trickle to obtain gear type PP/PE composite short fiber primary yarns, bundling, drafting, oiling, curling, shaping and cutting the gear type PP/PE composite short fiber primary yarns to obtain gear type PP/PE composite short fibers, wherein PP components in the gear type PP/PE composite short fibers are distributed on a gear type support part of the gear type PP/PE composite short fibers, and PE components are distributed on an interdental filling part on the peripheral side of the gear type support part, and the mass ratio of the PP component to the PE component is 70: 30.
the extruder extrusion temperature corresponding to the PP slices comprises: the temperature of the first zone is 274 ℃, the temperature of the second zone is 278 ℃, the temperature of the third zone is 282 ℃, the temperature of the fourth zone is 283 ℃, and the temperature of the fifth zone is 285 ℃; the temperature of a spinning box corresponding to the PP slice is 289 ℃; the extruder extrusion temperature corresponding to the PE slices comprises: the temperature of the first zone is 279 ℃, the temperature of the second zone is 285 ℃, the temperature of the third zone is 290 ℃, the temperature of the fourth zone is 294 ℃, and the temperature of the fifth zone is 295 ℃; the temperature of a spinning box corresponding to the PP slices is 296 ℃; the temperature of cross air blowing adopted in the cooling forming procedure is 23.6 ℃, and the cooling air speed is 1.4 m/s; the relative humidity corresponding to the gear type PP/PE melt trickle is 80%, and the spinning speed is 1200 m/min.
The gear type PP/PE composite short fiber primary raw silk has the advantages that the stretching multiple is 5.5, the oiling rate is 1.2%, the number of crimps is 14/inch, the setting temperature is 118 ℃, and the cutting length is 51 mm; the linear density of the fibers of the gear type PP/PE composite short fibers is 2D.
(2) Weighing, cotton feeding, coarse opening, cotton mixing, fine opening, cotton feeding in an air pressure cotton box, cross lapping, needling reinforcing and winding the gear type PP/PE composite short fibers to obtain the PP/PE composite short fiber non-woven gigging base fabric, wherein the gram weight of the PP/PE composite short fiber non-woven gigging base fabric is 100-2The thickness is 1.5-3.5mm, and the fiber opening rate is 60%; the needling reinforcing process comprises one needling and four main spines, wherein the needling adopts a lower needling mode, the first main spine adopts an upper needling mode, the second main spine adopts a lower needling mode, the third main spine adopts an upper needling mode, and the fourth main spine adopts a lower needling mode.
The working parameters adopted by the pre-needling in the needling reinforcement process comprise: the planting needle density is 5000 pieces/m, a 38-gauge triangular needle is selected, the quantity of each ridge hook is 2, the initial tooth pitch is 6.3mm, the tooth form of the hook is G tooth form, the needling frequency is 700 punches/min, the needling depth is 10mm, and the drafting ratio is 1.2.
In the needling reinforcement process, the speed of four main needling processes is 2.5m/min, the needle plate needling density of the main needling process is 7000 needles, a number of triangular needles with 40 needle numbers is selected, and the number of hook needling per edge is 3; wherein the initial pitch of the pricking pins used in the first main pricking is 6.3mm, the tooth type of the hook pricking is G tooth type, the pricking frequency is 720 pricking/min, and the pricking depth is 9.2 mm; the initial pitch of the felting needles used for the second main needling is 4.8mm, the tooth profile of the hook needling is G tooth profile, the needling frequency is 750 needling/min, the needling depth is 8.5mm, the initial pitch of the felting needles used for the third main needling is 3.3mm, the tooth profile of the hook needling is Y tooth profile, the needling frequency is 800 needling/min, the needling depth is 8m, the initial pitch of the felting needles used for the fourth main needling is 1.5mm, the tooth profile of the hook needling is Y tooth profile, the needling frequency is 850 needling/min, and the needling depth is 8 mm.
(3) And (2) unreeling the PP/PE composite short fiber non-woven napping base fabric, then feeding the unreeled PP/PE composite short fiber non-woven napping base fabric into a needle napping machine for needle napping, so that the PP/PE composite short fiber non-woven napping base fabric is napped under the common friction action of a preset number of nylon yarns on a supporting net plate of the needle napping machine, and then winding to obtain the PP/PE composite superfine short fiber non-woven napping fabric, wherein the surface of the PP/PE composite superfine short fiber non-woven napping fabric is provided with a composite superfine short fiber napping layer, the napping rate of the composite superfine short fiber napping layer is 80%, and the fiber fineness is 0.16D.
The speed of the needle punching raising process is 3 m/min, the needle density of a needle plate is 9000 needles/m, a crown-shaped needle with the needle number of 40 is selected, the quantity of hook insertions per edge is 1, the needle punching frequency is 1300 insertions/min, and the needle punching depth is 3.5 mm; the net supporting plate of the needling raising machine consists of a preset number of brushes, and the brushes are made of materials with specific gravity of 1.06g/cm3The head of the DuPont nylon wire is conical, the width of each brush is 38mm, the length of each brush is 15cm, and the height of the DuPont nylon wire on each brush is 25-30 mm.
(4) The method comprises the steps of stacking PP/PE composite superfine short fiber non-woven fleece and moisture-conducting spunlace non-woven fabric, cutting the stacked PP/PE composite superfine short fiber non-woven fleece and moisture-conducting spunlace non-woven fabric into a size with the length multiplied by the width =17.5 multiplied by 9.5cm, fixing the stacked PP/PE composite superfine short fiber non-woven fleece and moisture-absorbing and warm-keeping gauze mask with a nose bridge strip and an ear band through ultrasonic heat sealing, and compounding the gauze mask with the nose bridge strip and the ear band to obtain the moisture-absorbing and warm-keeping gauze mask.
Lead wet type spunlace nonwoven is wood pulp fiber/polyester fiber composite spunlace nonwoven, and wherein, wood pulp fiber is used for the moisture absorption and leads wet, and polyester fiber is used for leading moisture to external environment, wood pulp fiber mass percent is 60% in the wood pulp fiber/polyester fiber composite spunlace nonwoven, polyester fiber mass percent is 40%, it is 40g/m to lead the gram weight of wet type spunlace nonwoven to be 40g/m2The thickness is 0.08 mm.
Further, the present invention compares the performance of the moisture-absorbing and warm-keeping mask prepared in the above examples 1 to 3 with that of a commercially available disposable mask as a comparative example. The invention respectively tests the hygroscopicity, the moisture permeability, the heat retention, the softness, the filtering efficiency and the resistance of each mask, and the obtained test results are shown in the table 1, wherein the inner layer and the outer layer of the commercially available disposable mask are spun-bonded cloth, the middle layer is melt-blown cloth, and the reference standard and basis of the performance test are as follows:
(1) thickness of
The thickness of the model YG (B) 141D digital fabric thickness gauge was used, and the test method was carried out according to GB/T3820-1997 standard.
(2) Softness
The FSY131 softness tester is adopted, and the test method is executed according to the GB/T8942-2002 standard.
(3) Moisture absorption property
And testing by adopting an LCK-131 fabric moisture permeability tester according to the standard GB/T12704.2-2009.
(4) Moisture permeability
The YG871 capillary effect tester was used to test the cloth sample specification of 25mm × 300mm according to the standard ZB W04019-.
(5) Air permeability
The YG461D digital fabric air permeameter was used and the test method was performed according to GB/T5453-1997 standard.
(6) Warmth retention property
The YG (B)606D type open plate type heat retention instrument is adopted to carry out the test according to the GB1048-89 standard, and the test cloth sample specification is 25cm multiplied by 25 cm.
(7) Filtration efficiency and resistance
A GL3150 type filtering efficiency tester is adopted, and the execution standard is GB32610-2016 technical Specification of daily protective masks.
Figure 800747DEST_PATH_IMAGE002
TABLE 1
As can be seen from Table 1, the moisture-absorbing and warm-keeping masks prepared in examples 1 to 3 have good moisture absorption and permeability, while the moisture absorption and permeability of the commercially available disposable masks are both 0, so that fog is easily generated on the glasses when the mask is worn in winter; in the aspect of warmth retention, the moisture-absorbing and warm-keeping mask prepared by the invention adopts PP/PE composite superfine short fiber non-woven flannelette with composite superfine short fiber on the surface as an inner layer, and the warmth retention is about 8 times higher than that of a commercially available disposable mask; in the aspect of filtration efficiency, resistance and air permeability, because the gradient filtering effect that the compound superfine short fiber non-woven pile fabric of PP/PE has, fine two indexes of gas permeability and filtration efficiency have balanced, when having better filtration efficiency, still have fine gas permeability, the air-resistor is little, and the comfort when wearing is very good.
The test results show that the moisture-absorbing and warm-keeping mask prepared by the invention has the advantages of high filtering efficiency, good air permeability, low air resistance, good moisture absorption and conduction, softness and warmth keeping, low energy consumption of the production process, low carbon and environmental protection, is very suitable for wearing in winter and has good application prospect.
Compared with the prior art, the moisture-absorbing and warm-keeping mask and the preparation method thereof provided by the invention have the following advantages:
1) the process is innovative. The gear type PP/PE composite short fiber prepared by the invention has the advantages that the PP component in the gear type PP/PE composite short fiber is distributed on the gear type support part of the gear type PP/PE composite short fiber, the PE component is distributed on the interdental filling part on the peripheral side of the gear type support part, the boundary line length of the PP component and the PE component distributed on the fiber cross section is smaller, the stripping and fiber splitting between the two components are easier to carry out, the difficulty of the subsequent fiber splitting into superfine fiber is reduced, in the process of manufacturing the needle punched non-woven pile fabric, the needle is enabled to separate the gear type support part PP and the interdental filling part PE of the gear type composite short fiber to obtain partial fiber splitting through the special collocation between different needle plates, the special selection of the needle and the specially designed needle punching process when the needle penetrates the PP/PE composite short fiber up and down, the opening rate of the base layer of the needle-punched non-woven napping cloth reaches 50-60%, and then the composite short fibers forming the napping surface are further opened under the puncturing action of the crown felting needles and the friction action of the nylon brush filaments in the napping process, the opening rate reaches 70-80%, and the traditional chemical after-finishing and other high-energy-consumption opening modes are avoided.
2) Gradient filtration and good comfort. The opening rate of the PP/PE composite short fiber non-woven napped base fabric prepared by the invention reaches 50-60%, the opening rate of the composite superfine short fiber napped layer reaches 70-80%, the linear density of fibers after opening reaches 0.16-0.25D, when the mask is manufactured, the composite superfine short fiber napped layer of the PP/PE composite short fiber non-woven napped base fabric is in inward contact with the face, and the non-napped surface faces outwards, so that the gradient filtering effect on bacterial and virus particles entering the mask from the outside is achieved. The moisture-absorbing and warm-keeping mask prepared by the invention has high-efficiency gradient filtering effect, good air permeability, small air resistance and good wearing comfort, and can prolong the service life of the mask.
3) Has good moisture absorption and heat retention. The innermost layer of the moisture-absorbing and warm-keeping mask provided by the invention is the composite superfine short fiber velvet layer, the huge specific surface area of the composite superfine short fibers in the velvet layer can quickly absorb hot air exhaled by a mouth, the hot air is quickly transmitted to the outer layer of the mask through the composite superfine short fibers in the substrate layer, and the wood pulp fibers in the outer layer immediately absorb the exhausted moisture and are exhausted into the outside air through the polyester fibers, so that the glasses are prevented from generating fog; on the other hand, the composite superfine short fiber velvet layer also provides a good warm-keeping effect for the mask, and meanwhile, the gear type PP/PE composite short fibers are soft and comfortable in touch due to the adoption of PE, so that the skin of the face is protected from being frozen in cold winter, and the mask has warm, soft and fine feeling when being worn in winter.
In summary, according to the moisture-absorbing and warm-keeping mask provided by the invention, the prepared PP/PE composite superfine short fiber non-woven pile fabric has a high fiber opening rate through the preparation of the gear type PP/PE composite short fiber, the setting of the pre-needling and main needling process parameters in the needling reinforcement process and the setting of the needling pile process parameters, and the further prepared moisture-absorbing and warm-keeping mask has a gradient layer-by-layer filtering effect, high filtering efficiency, good air permeability and good moisture absorption and conduction properties, and meanwhile, the composite superfine short fiber pile layer of the PP/PE composite superfine short fiber non-woven pile fabric further improves the warm-keeping property, so that the moisture-absorbing and warm-keeping mask provided by the invention has high-efficiency filtering, moisture absorption and conduction properties and warm-keeping properties, achieves the improvement of the warm-keeping property of the mask, and improves the technical effect of the mask on man-machine relationship of users wearing glasses in winter.
While the invention has been described in detail in the foregoing by way of general description, and specific embodiments and experiments, it will be apparent to those skilled in the art that modifications and improvements can be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof.

Claims (8)

1. A preparation method of a moisture-absorbing and warm-keeping mask is characterized by comprising the following steps:
respectively processing PP slices and PE slices through respective hoppers, extruders, metering pumps and filtering systems to obtain PP melt and PE melt, respectively feeding the PP melt and the PE melt into a spinning manifold for spinning, conveying the PP melt and the PE melt through respective independent melt distribution systems, compounding and extruding at a spinneret orifice of a gear type spinneret plate to form PP/PE melt trickle, cooling and molding the PP/PE melt trickle to obtain gear type PP/PE composite short fiber primary yarns, bundling, drafting, oiling, curling, shaping and cutting the gear type PP/PE composite short fiber primary yarns to obtain gear type PP/PE composite short fibers, wherein PP components in the gear type PP/PE composite short fibers are distributed on a gear type support part of the gear type PP/PE composite short fibers, and PE components are distributed on an interdental filling part on the peripheral side of the gear type support part, and the mass ratio of the PP component to the PE component is 60-70: 30-40 parts of;
weighing, cotton feeding, coarse opening, cotton mixing, fine opening, cotton feeding in an air pressure cotton box, cross lapping, needling reinforcing and winding the gear type PP/PE composite short fibers to obtain the PP/PE composite short fiber non-woven gigging base fabric, wherein the gram weight of the PP/PE composite short fiber non-woven gigging base fabric is 100-2The thickness is 1.5-3.5mm, and the fiber opening rate is 50-60%; the needling reinforcement procedure comprises a preliminary needling and four main needling, wherein the preliminary needling adopts a lower needling type, the first main needling adopts an upper needling type, the second main needling adopts a lower needling type, the third main needling adopts an upper needling type, and the fourth main needling adopts a lower needling type;
unreeling the PP/PE composite short fiber non-woven napping base fabric, then sending the base fabric into a needle napping machine for needle napping, so that the PP/PE composite short fiber non-woven napping base fabric is napped under the common friction action of a preset number of nylon yarns on a supporting mesh plate of the needle napping machine, and then winding to obtain the PP/PE composite superfine short fiber non-woven napping fabric, wherein the surface of the PP/PE composite superfine short fiber non-woven napping fabric is provided with a composite superfine short fiber napping layer, the napping rate of the composite superfine short fiber napping layer is 70-80%, and the fiber fineness is 0.16-0.25D;
the method comprises the steps of stacking the PP/PE composite superfine short fiber non-woven fleece and moisture-conducting spunlace non-woven fabric, cutting the stacked PP/PE composite superfine short fiber non-woven fleece and moisture-conducting spunlace non-woven fabric into a size of length multiplied by width = (14-17.5) × (8-9.5), fixing the stacked PP/PE composite superfine short fiber non-woven fleece and moisture-conducting spunlace non-woven fabric into a mask cover surface through ultrasonic heat sealing, and compounding the mask cover surface, a nose bridge strip and an ear band to obtain the moisture-absorbing and warm-keeping mask.
2. The method according to claim 1, wherein the extruder extrusion temperature corresponding to the PP chip comprises: the temperature of the first zone is 271-274 ℃, the temperature of the second zone is 275-278 ℃, the temperature of the third zone is 279-282 ℃, the temperature of the fourth zone is 280-283 ℃, and the temperature of the fifth zone is 281-285 ℃; the temperature of a spinning box corresponding to the PP slice is 285-289 ℃; the extruder extrusion temperature corresponding to the PE slices comprises: the temperature of the first zone is 276-279 ℃, the temperature of the second zone is 280-285 ℃, the temperature of the third zone is 284-290 ℃, the temperature of the fourth zone is 288-294 ℃, and the temperature of the fifth zone is 290-295 ℃; the temperature of a spinning box corresponding to the PP slice is 292-296 ℃; the temperature of the cross air blow adopted in the cooling forming procedure is 20.5-23.6 ℃, and the cooling air speed is 1.1-1.4 m/s; the relative humidity corresponding to the gear type PP/PE melt trickle is 70-80%, and the spinning speed is 900-1200 m/min.
3. The preparation method as claimed in claim 1, wherein the gear type PP/PE composite staple fiber spun yarn employs a draw ratio of 3.5-5.5, an oiling rate of 0.85-1.2%, a crimp number of 12-14/inch, a setting temperature of 108- > 118 ℃, and a cut length of 51-65 mm; the linear density of the fibers of the gear type PP/PE composite short fibers is 2-3D.
4. The preparation method according to claim 1, wherein the working parameters adopted in the pre-needling in the needling reinforcement process comprise: the density of the implanted needle is 5000 pieces/m, a 38-gauge triangular needle is selected, the number of hooked thorns per edge is 2, the initial tooth pitch is 6.3mm, the tooth shape of the hooked thorns is G tooth shape, the needling frequency is 600 plus 700 thorns/min, the needling depth is 9-10 mm, and the draft ratio is 1.1-1.2.
5. The preparation method according to claim 1, wherein the speed of the four main needling processes in the needling reinforcement process is 2.5-3.5 m/min, the needle plate needling density of the main needling process is 7000 needles, a triangle needle with a needle number of 40 is selected, and the quantity of hook needling per edge is 3; wherein the initial pitch of the pricking pins used in the first main pricking is 6.3mm, the tooth type of the hook pricking is G tooth type, the pricking frequency is 680-720 pricking/min, and the pricking depth is 8.5-9.2 mm; the initial pitch of the felting needles used for the second main needling is 4.8mm, the tooth profile of the hook needling is G tooth profile, the needling frequency is 700 plus 750 needling/min, the needling depth is 8-8.5mm, the initial pitch of the felting needles used for the third main needling is 3.3mm, the tooth profile of the hook needling is Y tooth profile, the needling frequency is 750 plus 800 needling/min, the needling depth is 7.2-8m, the initial pitch of the felting needles used for the fourth main needling is 1.5mm, the tooth profile of the hook needling is Y tooth profile, the needling frequency is 800 plus 850 needling/min, and the needling depth is 7-8 mm.
6. The preparation method according to claim 1, wherein the speed of the needling and raising process is 2-3 m/min, the needle density of the needle plate is 9000 needles/m, a crown-shaped needle with the needle number of 40 is selected, the quantity of hook-needling per edge is 1, the needling frequency is 1200-1300 needles/min, and the needling depth is 2.5-3.5 mm; the net supporting plate of the needling raising machine consists of a preset number of brushes, and the brushes are made of materials with specific gravity of 1.06g/cm3The head of the DuPont nylon wire is conical, the width of each brush is 38-42mm, the length of each brush is 12-15cm, and each brushThe height of the upper DuPont nylon wire is 20-30 mm.
7. The preparation method of claim 1, wherein the moisture-conductive spunlace nonwoven fabric is a wood pulp fiber/polyester fiber composite spunlace nonwoven fabric, wherein the wood pulp fiber is used for absorbing and guiding moisture, the polyester fiber is used for conducting moisture to the external environment, the mass percentage of the wood pulp fiber in the wood pulp fiber/polyester fiber composite spunlace nonwoven fabric is 55-60%, the mass percentage of the polyester fiber in the polyester fiber composite spunlace nonwoven fabric is 40-45%, and the grammage of the moisture-conductive spunlace nonwoven fabric is 40g/m2The thickness is 0.08 mm.
8. A moisture-absorbing and warm-keeping mask, characterized in that the moisture-absorbing and warm-keeping mask is prepared by the method for preparing the moisture-absorbing and warm-keeping mask according to any one of claims 1 to 7, the mask cover of the moisture-absorbing and warm-keeping mask is formed by compounding inner PP/PE composite superfine short fiber non-woven fleece and outer moisture-conducting spunlace non-woven fabric, the surface of the PP/PE composite superfine short fiber non-woven fleece is provided with a composite superfine short fiber fleece layer, the PP/PE composite superfine short fiber non-woven fleece and the composite superfine short fiber fleece layer are both formed by gear type PP/PE composite short fibers, PP components in the gear type PP/PE composite short fibers are distributed on a gear type support part of the gear type PP/PE composite short fibers, PE components are distributed on an interdental filling part on the peripheral side of the gear type support part, and the mass ratio of the PP component to the PE component is 60-70: 30-40.
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Publication number Priority date Publication date Assignee Title
CN114403641A (en) * 2021-12-02 2022-04-29 惠州家和新材料科技有限公司 Spring silent wear-resistant wrapping cloth for spring bed and preparation process

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CN111227352A (en) * 2020-03-02 2020-06-05 仇一斐 Reusable comfortable sterilizing and antiviral mask
CN112317227A (en) * 2020-10-19 2021-02-05 广州坤立服装有限公司 Filtering and ventilating melt-blown fabric and preparation method thereof
CN212938025U (en) * 2020-04-21 2021-04-13 杭州一菲信息技术有限公司 Mask for preventing glasses from fogging

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105970489A (en) * 2016-07-13 2016-09-28 嘉兴学院 Ultra-thin breast pad and preparation method thereof
CN111227352A (en) * 2020-03-02 2020-06-05 仇一斐 Reusable comfortable sterilizing and antiviral mask
CN212938025U (en) * 2020-04-21 2021-04-13 杭州一菲信息技术有限公司 Mask for preventing glasses from fogging
CN112317227A (en) * 2020-10-19 2021-02-05 广州坤立服装有限公司 Filtering and ventilating melt-blown fabric and preparation method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114403641A (en) * 2021-12-02 2022-04-29 惠州家和新材料科技有限公司 Spring silent wear-resistant wrapping cloth for spring bed and preparation process

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