CN108636844B

CN108636844B - Non-woven dust removal material and manufacturing method thereof

Info

Publication number: CN108636844B
Application number: CN201810396280.0A
Authority: CN
Inventors: 王温; 崇庆成
Original assignee: HANGZHOU NBOND NONWOVENS CO LTD
Current assignee: HANGZHOU NBOND NONWOVENS CO LTD
Priority date: 2018-04-27
Filing date: 2018-04-27
Publication date: 2020-09-25
Anticipated expiration: 2038-04-27
Also published as: CN108636844A

Abstract

The invention relates to the technical field of cleaning materials, and discloses a non-woven dust removal material and a manufacturing method thereof, wherein the non-woven dust removal material comprises a non-woven fabric base material and a viscous material attached to the surface of the non-woven fabric base material; the surface of the non-woven fabric substrate is provided with regularly arranged bulges or holes; the height of the protrusion or the depth of the hole is 0.5 to 4.6 mm. The non-woven dust removal material has good dust holding performance, is not easy to cause secondary pollution due to scrap falling, and has good cleaning effect. The method has the advantages of low consumption, low energy consumption and high efficiency in the post-finishing process.

Description

Non-woven dust removal material and manufacturing method thereof

Technical Field

The invention relates to the technical field of cleaning materials, in particular to a non-woven dust removal material and a manufacturing method thereof.

Background

In the painting process of metal surfaces of automobiles, ships, airplanes and the like, the painting process of electronic plastics manufacturing such as computer display screens, television shells and the like, and the painting process of wood surfaces of piano manufacturing, furniture manufacturing and the like, dust adhered to the surfaces of parts to be painted needs to be thoroughly removed before painting, so that the parts to be painted are absolutely clean before painting, the painting quality is guaranteed, and the phenomena that the paint surfaces have shrinkage cavity granular feeling and concave-convex feeling and the paint surfaces are influenced by the existence of the dust are prevented. Therefore, the prevention of chipping is a fundamental requirement for a cleaning material for coating.

In order to solve the problem of fiber chip falling of common cleaning materials, the surface of the cleaning material is generally sticky. The industrial dedusting material is a novel cleaning material, is manufactured by a special process, has multiple functions of soft texture, strong adsorption capacity, high decontamination rate, no fiber falling and the like, is an optimal article for cleaning the surface to be painted before painting operation, can effectively remove dust and foreign matters on the surface to be painted, and ensures that the painted surface is smoother and glossy. The industrial dedusting material is widely used for cleaning and wiping in the fields of electronic factories and precision manufacturing, and pretreatment before painting of paint in automobiles, motorcycles, airplanes and high-grade plastic parts or painting of finish paint.

Chinese patent CN97106889.5 discloses a method for preparing dust-removing cloth for spray paint, which comprises the steps of firstly putting alkyd resin into a reaction tank, then adding a cleaning agent, a humidifying agent, a surfactant, a slow-release agent and an anti-aging agent, and uniformly stirring to prepare an impregnant. And then placing the degreased and finely bleached pure cotton gauze into a impregnant for impregnation, taking out the degreased and finely bleached pure cotton gauze, pressing the excess impregnant by using a press roller, and finally slowly sending the single-layer gauze soaked with the impregnant into an oven for drying to prepare the dust removal cloth for paint spraying. The dust removing cloth manufactured by the method is used for treating the surface of metal objects such as automobiles and the like before painting, has obvious dust removing effect and can greatly improve the product quality.

CN201010228598.1 discloses a preparation method of environment-friendly sticky dust removing cloth, which comprises the following steps: (1) weighing the materials; (2) putting water into a container, mixing the glue, the diluent, the anti-curing agent and the humidifying agent into the container at room temperature, and uniformly stirring to prepare an impregnant; (3) placing degreased and finely bleached pure cotton gauze into a press machine, uniformly spraying a impregnant into the press machine, pressing off redundant impregnant through a press roller, and finally uniformly spreading the gauze soaked with the impregnant out and placing the gauze in a drying room for natural volatilization drying to prepare the sticky dust removal cloth. The main component of the impregnant used in the preparation method of the environment-friendly sticky dust removing cloth is polyisobutylene, so that the impregnant has strong adsorption capacity on dust on the surface of an object, has good dust removing effect, and has no peculiar smell and no harm to human bodies. Therefore, the dust removing cloth produced by the preparation method of the invention is used for treating the surface of an object, especially a metal object such as an automobile and then spraying paint, so that the surface appearance quality of the object can be greatly improved.

CN201010102402.4 discloses a preparation method of dust-binding cloth, which comprises the following steps: firstly, coating a dust absorption coating on the surface of a base material; step two, drying the base material coated with the dust absorption coating to obtain dust-sticking cloth; and step three, cutting and packaging the dust-sticking cloth after drying. The dust absorption coating is coated on the surface of the base material and comprises hexane, polyisobutylene and a preservative, so that the dust absorption coating has viscosity, the surface is smooth, pollution-free and has good adsorption effect on dust, and therefore, the dust absorption coating can be used for directly wiping dust to remove the dust, is convenient to use and good in using effect, is simple to manufacture and low in manufacturing cost and does not have adhesive residue during wiping. Meanwhile, static electricity is not generated, and chemical reaction with chemicals is not generated. The base material of the invention is absorbent gauze, cotton material, rayon fiber or chemical fiber cloth, which not only can not pill or scatter paper powder, but also has strong toughness and can not scratch the surface of an object.

The existing industrial dedusting material comprising the technical scheme mainly has the following problems:

1. the material has low dust holding capacity, and can not prevent dust particles on the cleaning cloth from falling off to cause secondary pollution.

At present, the sticky industrial dedusting material is generally common cotton cloth or non-woven fabric, the contact of the sticky industrial dedusting material and the object to be cleaned is a flat surface, and in the cleaning process, although dust is adhered to the surface of the cleaning cloth, the dust containing capacity is limited due to the fact that no dust containing space exists, the falling of dust particles adhered to the surface of the cleaning cloth cannot be guaranteed, and secondary pollution is easily caused.

2. The cleaning effect is limited and cannot meet high-end requirements.

Because the cloth surface of the existing industrial dust removal material is flat and smooth, and the surface of a wiped object is usually smooth, the friction coefficient of the cleaning towel with the surface of the wiped object in the wiping process is low, dust firmly adsorbed on the surface cannot be thoroughly removed, and the decontamination effect is limited.

3. The material consumption is large, the energy consumption is high and the efficiency is low in the production.

The existing industrial dedusting material generally adopts a dipping finishing process to apply a viscous material to the surface of a base material, the process has high adhesive consumption and large production energy consumption, the adhesive is easily adhered to a drying cylinder in production, the production efficiency is reduced, the surface of the material is easily damaged, the viscous material is unevenly distributed, and the decontamination and dust holding performances of the dedusting material are influenced.

4. The woven sticky dust removal cloth has limited application occasions.

Although the sticky dust removing cloth using the common woven fabric as the base material has a certain cleaning effect on dirt and dust on the surface of an object, the sticky dust removing cloth is not suitable for cleaning medium and small particles and flock due to low softness and smooth surface of the material, and is limited in use.

In view of the above problems in the prior art, there is a need for a novel industrial dedusting material that has the characteristics of soft texture, strong adsorption capacity, strong dust holding capacity, and high decontamination rate.

Disclosure of Invention

The invention provides a non-woven dust removal material and a manufacturing method thereof, and aims to solve the problems that a dust removal material in the prior art is poor in dust holding performance, easy to fall scraps, limited in cleaning effect, large in material consumption in an after-finishing process, high in energy consumption, low in efficiency and the like. The method has the advantages of low consumption, low energy consumption and high efficiency in the post-finishing process.

The specific technical scheme of the invention is as follows: a non-woven dedusting material comprises a non-woven fabric base material and an adhesive material attached to the surface of the non-woven fabric base material; the surface of the non-woven fabric substrate is provided with regularly arranged bulges or holes; the height of the protrusion or the depth of the hole is 0.5 to 4.6 mm.

In the prior art, the appearance of the common spunlace nonwoven fabric is mainly of two types, namely plain weave and mesh. The surface of the plain spunlace non-woven fabric is smooth, and the height difference of the material thickness is very small, generally only 0.1-0.2 mm; the thickness difference of the mesh type spunlace non-woven fabric is only about 0.4-0.5 mm.

In this application, non-woven fabrics substrate surface evenly distributed has arch or hole for the material is at the ascending difference in height of thickness direction and is up to 0.5 ~ 4.6mm, and the unsmooth effect on material surface is very obvious, has increased the dirt hole of holding of collecting dust and granule on the one hand, has improved the dirt performance of holding of material greatly. On the other hand, the surface of the non-woven dust removal material has obvious concave-convex effect, so that the friction force between the dust removal material and an object to be cleaned is increased during cleaning, and the cleaning effect is greatly improved.

Preferably, the shape of the protrusion or the cavity comprises a circle, an ellipse, a rectangle, a square and a diamond.

Preferably, the protrusions or holes are arranged in a staggered manner or in a side-by-side manner.

Preferably, the protrusions are rectangular protrusion stripes which are arranged in a staggered mode; the length of each stripe is 30-60 mm, the width of each stripe is 4-8 mm, and the distance between every two adjacent stripes is a and b, wherein a is more than or equal to 2mm and less than or equal to 4mm, and b is more than or equal to 1mm and less than or equal to 3 mm.

Through a large number of experiments, the team of the invention finds that when the stripe size and the interval are strictly limited in the range, the friction effect of the non-woven fabric and the surface of a cleaning object is optimal during dust removal. The rectangular raised stripes distributed on the surface of the non-woven fabric substrate increase the concave-convex effect of the surface of the material, and greatly improve the dust holding space of the dust removing material; the rectangular convex stripes are arranged in a staggered manner, so that the friction coefficient between the material and the surface of the wiped object is increased, and the cleaning effect is improved.

Preferably, the non-woven fabric base material is a spunlace non-woven fabric, a needle-punched non-woven fabric or a hot-rolled non-woven fabric; the thickness is 0.6-5 mm.

Preferably, the material of the non-woven fabric base material is at least one of polyester fiber, polypropylene fiber, ES fiber and viscose fiber.

Among the fibers, the terylene and polypropylene fibers have good rebound resilience and stiffness, and can enhance the convex or concave effect on the surface of the non-woven dust removal material; in addition, the two fibers have low moisture regain and good electrostatic adsorption effect, and can improve the dust holding property of the material. The ES fiber is a double-component hot-melt fiber, has a hot-melt effect, can fix the convex or concave part of the material, and has stronger stereoscopic impression and better product cleaning effect. The viscose fiber has better oil absorption and moisture absorption performance, and can enable the material to better absorb liquid stains such as oil stains, water stains and the like.

Preferably, the formulation of the viscous material comprises, in mass percent: 10-60% of a viscous finishing agent, 0-40% of a PA (polyamide) adhesive, 0.6-3.0% of ammonia water and the balance of water; the viscous finishing agent is an aqueous emulsion of anionic acrylate copolymer, the solid content is 55%, the pH value is 6-7.5, the glass transition temperature is-55 ℃, and the viscosity is 2-10pa.s under the conditions of a No. 4 rotor, 25 ℃ and 60 rpm.

The main chain structure of the chemical molecule of the viscous finishing agent is consistent with that of common adhesive molecules, the main difference is that the functional group molecules of the branched chain are different, and what plays a role in viscosity is the functional group on the branched chain. The tacky finish has soft, elastic and slightly tacky characteristics; has good washing and dry-cleaning fastness; light, weather, hydrolysis and aging resistance. The glass transition temperature of the viscous finishing agent is required to reach-55 ℃, because the glass transition temperature is low, the acrylate is not easy to crosslink and form a film on the cloth surface, so that the overall softness and hardness degree of the cloth surface cannot be influenced by the viscous finishing agent, meanwhile, the acrylate is not easy to crystallize on the cloth surface due to low glass transition temperature, better colloid is always kept, the acrylate is not easy to dry, and the storage and use period of the product can be more durable. In addition, under the viscosity range of 2-10pa.s, the viscous finishing agent can be prepared into slurry suitable for the production requirement of a sizing process, and simultaneously can be better attached among fibers of a cloth cover and is not easy to fall off.

The manufacturing method of the non-woven dust removal material comprises the following steps:

1) one or more fibers are sent into a bale opener for preliminary opening and mixing, then the fibers are sent into an opener for loosening large entangled fibers into blocky fibers or fasciculate fibers by tearing, and impurities in the fibers are removed.

2) The opened and mixed fibers are fed into a carding machine, the blocky fibers are continuously carded into fasciculate fibers through card clothing on the carding machine, and the fasciculate fibers are carded into single fibers to be made into the fluffy fiber net.

3) Sending the fluffy fiber net into a pre-wetting procedure, removing air in the fluffy fiber net, and reducing the thickness of the fluffy fiber net to obtain a wet fiber net; then, the wet fiber web is sent into a spunlace machine, and the wet fiber web is reinforced by high-pressure water flow generated on a high-pressure spunlace head, so that fibers in the wet fiber web are preliminarily entangled, and the spunlace fiber web is obtained; and then the spunlace fiber web is sent into a jacquard spunlace drum, a jacquard circular net with concave-convex textures or holes is arranged on the jacquard spunlace drum, the concave-convex textures on the jacquard circular net are mapped onto the fluffy spunlace fiber web by using the impact of high-pressure water flow in a spunlace head or the holes are formed on the spunlace fiber web by using the impact of the high-pressure water flow, so that a wet spunlace material with bulges or holes is obtained, and the bulges or the holes are formed while fibers in the spunlace fiber web are intertwined with each other, so that the bulges or the holes of the cloth cover are fixed.

4) The wet spunlace material which is reinforced by jacquard is pumped to control the water content of the material and keep the effect of the projection or hole of the cloth surface of the spunlace fiber web unaffected.

5) The pumped wet hydroentangled material is fed into a foam sizing machine through which a viscous material is applied to the wet hydroentangled material.

6) And (3) feeding the wet spunlace material subjected to foam sizing into a dryer, drying and coiling to obtain the non-woven dust removal material.

In the step 5), the foam sizing is adopted, the basic principle is that air is introduced into the concentrated slurry to generate foam, and the foam is applied to the non-woven fabric substrate by using a foam applicator, so that the foam sizing finishing liquid absorption rate is low, and the energy consumption is low. Compared with the conventional impregnation finishing process for spunlaced fabrics, the foam sizing finishing process has the following characteristics:

(1) the slurry has high concentration, low water content and small slurry consumption, and the slurry can be effectively saved;

(2) because the water content of the slurry is low, compared with the dipping and sizing, the energy is saved during drying, and the problem that the slurry is stuck to a drying cylinder due to large liquid carrying amount during dipping and sizing is also avoided;

(3) in order to control the liquid carrying amount and ensure the sizing uniformity, the pressure of a sizing roller is usually over 0.3MPa, but the concave-convex effect on the surface of a cloth surface is damaged by high pressure. In the invention, the pressure requirement of the pulp roller for foam sizing only needs to reach 0.08-0.15 MPa, so that the concave-convex effect of the cloth surface can be well protected;

(4) due to the characteristics of low pressure and low water content of a sizing roller in foam sizing, the stiff and fluffy characteristic of a product can be well kept, pulp foam can enter pores of the product, the viscosity of the product can be well controlled, and the non-woven dust removal material is represented by the fact that the non-woven dust removal material of the product can obviously feel sticky hand feeling when being pressed, but has no obvious viscosity when being normally contacted by hands, so that a good wiping effect can be achieved by applying pressure during use, but adverse effects cannot be generated due to the viscosity in the processes of packaging, winding and the like (in the prior art, in order to solve the technical problems, a protective film such as a release film and the like needs to be attached to the surface of the sticky material before packaging and winding to prevent adhesion).

Preferably, in the step 2), two carding machines are arranged after the fibers are opened and mixed, wherein one carding machine forms a straight fiber laying net, a cross fiber laying machine is arranged behind the other carding machine to form a cross fiber laying net, and the straight fiber laying net and the cross fiber laying net are overlapped in a staggered mode to form a half-crossed fluffy fiber net.

The fluffy fiber net formed by the method is a half-crossed fiber net, and compared with a single straight-spread fiber net and a single crossed fiber net, the fluffy fiber net has small difference of longitudinal and transverse strength, good product size stability and difficult deformation in use.

The spunlace material prepared by the equipment configuration has small difference of longitudinal and transverse strength, good product size stability and difficult deformation in use.

Preferably, the pressure intensity in the foam sizing process is 0.08-0.15 MPa.

Compared with the prior art, the invention has the beneficial effects that:

(1) according to the invention, as the specific fiber raw material is selected, the jacquard pattern has stronger stereoscopic impression and better stiffness and smoothness. After sizing by using the viscous finishing agent, the decontamination performance is improved by more than 50 percent, and the dust holding performance is improved by more than 60 percent.

(2) The viscous finishing agent adopted in the invention has good viscous adhesiveness, can be well combined with non-woven fabrics, can not be adhered to the wiped surface in the wiping process, has good water washing resistance and dry cleaning resistance, and has excellent aging resistance, climate resistance, hydrolysis resistance and light resistance;

(3) the viscous finishing agent used in the invention has loose use conditions, and can be used for coating sizing by using various coating processes;

(4) the foam sizing process is adopted, the product can be endowed with viscosity after sizing, the performance of the product is not influenced, and the viscosity of the product can be adjusted by changing the concentration of the sizing agent and the sizing amount; and the adhesive does not have obvious viscosity under the normal condition of hand contact, and the surface can be only subjected to surface viscosity under the condition of applying pressure during use, so that the adverse effect caused by the viscosity in the packaging or winding process and the like can be avoided.

Drawings

FIG. 1 is a diagram of the appearance effect of a nonwoven dusting material with a raised appearance;

FIG. 2 is a diagram showing the appearance of a nonwoven dusting material with an apertured appearance;

figure 3 is a top view of a hydroentangled nonwoven web having rectangular raised stripes.

The reference signs are: non-woven fabric base material 1, convex 2 and hole 3.

Detailed Description

The present invention will be further described with reference to the following examples.

General examples

A non-woven dedusting material comprises a non-woven fabric base material and an adhesive material attached to the surface of the non-woven fabric base material; the surface of the non-woven fabric substrate is provided with regularly arranged bulges or holes; the height of the protrusion or the depth of the hole is 0.5 to 4.6 mm.

Preferably, the bulges are rectangular transverse convex stripes which are longitudinally staggered; the length of each stripe is 30-60 mm, the width of each stripe is 4-8 mm, the longitudinal distance between every two adjacent stripes is a, the transverse distance is b, wherein a is more than or equal to 2mm and less than or equal to 4mm, and b is more than or equal to 1mm and less than or equal to 3 mm.

5) And sending the pumped wet spunlace material into a foam sizing machine, and applying the viscous material to the wet spunlace material through the foam sizing machine under the pressure of 0.08-0.15 MPa.

Example 1

As shown in FIG. 1, a nonwoven dedusting material is composed of a nonwoven fabric substrate 1 (spunlace nonwoven fabric) and adhesive material attached on the surface of the nonwoven fabric substrate; the surface of the non-woven dust removal material is uniformly distributed with circular bulges 2 which are arranged at intervals. The thickness of the spunlace non-woven fabric is 3.5 mm; the height of the convex parts distributed on the surface of the non-woven fabric is 2 mm. The circular bulges are arranged on the cloth surface in a staggered mode and distributed in a four-side continuous infinite boundary-defining mode.

The formula of the viscous material is as follows: 40% of a viscous finishing agent, 24% of a PA adhesive, and 3% of ammonia water and 33% of water.

The viscous finishing agent is an aqueous emulsion of an anionic acrylate copolymer, and contains the following solid content: 55%, pH value: 6-7.5, glass transition temperature: -55 ℃ and viscosity (4 # rotor, 25 ℃, 60 rpm): 2 to 10 pa.s.

The spunlace non-woven fabric is made of polyester staple fibers, and the specification is 1.56dtex multiplied by 38 mm.

A method for manufacturing a non-woven dust removal material comprises the following steps:

(1) the fiber is sent into a bale opener for preliminary opening and mixing, then the fiber is sent into an opener for loosening large entangled fiber into small pieces or bundles by tearing, and impurities in the fiber are removed.

(2) The opened and mixed fibers are fed into a carding machine through a pipeline, the blocky fibers are continuously carded into bunches through card clothing on the carding machine, and then the bunched fibers are carded into single fibers to prepare a fluffy fiber net with a certain thickness.

(3) Sending the fluffy fiber net into a pre-wetting procedure, removing air in the fiber net and reducing the thickness of the fiber net; then, the wet fiber web is sent into a spunlace machine, the fiber web is reinforced by high-pressure water flow generated on a high-pressure spunlace head, fibers in the fiber web are primarily entangled, then the fiber web is sent into a jacquard spunlace circular drum, the jacquard spunlace circular drum is provided with a jacquard circular net with a circular concave-convex effect, circular concave-convex textures on the jacquard circular net are mapped onto the fluffy spunlace fiber web by using the impact of the high-pressure water flow in the spunlace head, the fibers in the fiber web are mutually entangled in the process of forming the circular convex, and the effect of the circular convex textures on the cloth surface is fixed.

(4) The wet spunlace material reinforced by the jacquard is pumped to control the water content of the material and keep the circular convex effect of the cloth surface of the spunlace material unaffected.

(5) Feeding the pumped wet spunlace material into a foam sizing machine, and applying a viscous material to the wet spunlace material through a foam sizing mechanism; the pressure for sizing and finishing the foam is 0.1 MPa.

(6) And (3) feeding the wet spunlace material subjected to foam sizing into a dryer, drying and coiling to prepare the sticky non-woven dust removal material.

Example 2

As shown in FIG. 2, a nonwoven dusting material is composed of a nonwoven fabric substrate 1 (spunlace nonwoven fabric) and an adhesive material attached on the surface thereof; the non-woven dedusting material is evenly distributed with holes 3 which are arranged in a staggered way and distributed in a four-side continuous infinite boundary mode.

The spunlace non-woven fabric is made by a spunlace method, the thickness of the spunlace non-woven fabric is 0.6mm, and the depth of the hole part distributed on the surface of the non-woven fabric is 0.5 mm.

The formula of the viscous material is as follows: 20% of adhesive finishing agent, 12% of PA adhesive, 2% of ammonia water and 66% of water. The viscous finishing agent is an aqueous emulsion of an anionic acrylate copolymer, and contains the following solid content: 55%, pH value: 6-7.5, glass transition temperature: -55 ℃ and viscosity (4 # rotor, 25 ℃, 60 rpm): 2 to 10 pa.s.

The spunlace non-woven fabric is made of polypropylene short fibers, and the specification is 1.8dtex multiplied by 40 mm.

(1) one or more fibers are sent into a bale opener for preliminary opening and mixing, then the mixed fibers are sent into an opener for loosening large entangled fibers into small pieces or bundles by tearing, and impurities in the fibers are removed.

(3) Sending the fluffy fiber net into a pre-wetting procedure, removing air in the fiber net and reducing the thickness of the fiber net; then, the wet fiber web is sent into a spunlace machine, firstly, the fiber web is reinforced by high-pressure water flow generated on a high-pressure spunlace head, so that fibers in the fiber web are primarily entangled, then, the fiber web is sent into a jacquard spunlace drum, the jacquard spunlace drum is provided with a jacquard circular net with a hole effect, hole textures in the jacquard circular net are mapped onto the fluffy spunlace fiber net by the impact of the high-pressure water flow in the spunlace head, and the fibers in the fiber web are simultaneously entangled with each other in the hole forming process, so that the hole effect of the cloth cover is fixed.

(4) The wet spunlace material which is reinforced by jacquard is pumped to control the water content of the material and keep the cloth cover hole effect of the spunlace material unaffected.

(5) Feeding the pumped wet spunlace material into a foam sizing machine, and applying a viscous material to the wet spunlace material through a foam sizing mechanism; the pressure for sizing and finishing the foam is 0.15 MPa.

Example 3

As shown in FIG. 3, a nonwoven dusting material is composed of a nonwoven fabric substrate 1 (spunlace nonwoven fabric) and an adhesive material attached on the surface thereof; the surface of the non-woven dedusting material is uniformly distributed with bulges 2 (rectangular transverse convex stripes). The thickness of the spunlace non-woven fabric is 4 mm; the height of the convex parts distributed on the surface of the non-woven fabric is 3 mm. The circular bulges are arranged on the cloth surface in a staggered mode and distributed in a four-side continuous infinite boundary-defining mode.

Protruding stripe length of rectangle is 50mm, and the width of protruding stripe is 7mm, and the lateral distance of adjacent protruding stripe is: 3mm, the longitudinal distance is: 2.5 mm; the rectangular convex stripes are longitudinally arranged in a staggered manner.

The formula of the viscous material is as follows: 40% of adhesive finishing agent, 24% of PA adhesive, 3% of ammonia water and 33% of water.

The viscous finishing agent is an aqueous emulsion of an anionic acrylate copolymer, and contains the following solid content: 55%, pH: 6-7.5, glass transition temperature: -55 ℃ and viscosity (4 # rotor, 25 ℃, 60 rpm): 2 to 10 pa.s.

The spunlace nonwoven fabric is made of a combination of polyester staple fibers and polypropylene staple fibers, and the specifications of the spunlace nonwoven fabric are 50% of 1.56dtex multiplied by 38mm polyester staple fibers and 50% of 1.8dtex multiplied by 40mm polypropylene staple fibers.

(1) the method comprises the steps of conveying various fibers into a bale opener for preliminary opening and mixing, then conveying the mixed fibers into an opener, loosening large entangled fibers into small pieces or bundles by tearing, and removing impurities in the fibers.

(3) Sending the fluffy fiber net into a pre-wetting procedure, removing air in the fiber net and reducing the thickness of the fiber net; then, the wet fiber web is sent into a spunlace machine, the fiber web is reinforced by high-pressure water flow generated on a high-pressure spunlace head, fibers in the fiber web are primarily entangled, then the fiber web is sent into a jacquard spunlace drum, the jacquard spunlace drum is provided with a jacquard circular net with a circular concave-convex effect, rectangular textures on the jacquard circular net are mapped onto the fluffy spunlace fiber web by the impact of the high-pressure water flow in the spunlace head, the fibers in the fiber web are mutually entangled in the process of forming the rectangular protrusions, and the effect of the rectangular protrusion textures on the cloth surface is fixed.

(4) The wet spunlace material reinforced by the jacquard is pumped to control the water content of the material and keep the rectangular convex effect of the cloth surface of the spunlace material unaffected.

The following are comparative test reports of the wiping performance of the nonwoven dusting materials of examples 1-3 with conventional materials:

remarking:

1. the dust collection rate refers to the dust adsorption capacity of the non-woven dust removal material in wiping, and the larger the numerical value is, the stronger the dust adsorption capacity of the material is.

2. The dust holding rate refers to the dust retention capacity of the non-woven dust removal material after being wiped and vibrated by the wrist type oscillator, and the larger the numerical value is, the stronger the retention capacity of the representing material on the dust is.

3. Since the effective wiping area at the time of the test was 81cm2(9cm × 9cm) and the initial size of the test piece cloth was 400cm2(20cm × 20cm), the test was conductedThe correction factor for the test area is about 4.9(400 ÷ 81).

Example 4

This example differs from example 3 in that: in the step 2), two carding machines are arranged after the fibers are opened and mixed, wherein one carding machine forms a straight fiber laying net, a cross fiber laying machine is arranged behind the other carding machine to form a cross fiber laying net, and the straight fiber laying net and the cross fiber laying net are overlapped in a staggered mode to form a half-crossed fluffy fiber net.

Example 5

The present embodiment is different from embodiment 1 in that: the formula of the viscous material comprises: 10% of viscous finishing agent, 0.6% of ammonia water and the balance of water.

Example 6

The present embodiment is different from embodiment 1 in that: the formula of the viscous material comprises: 60% of sticky finishing agent, 37% of PA adhesive, 1.0% of ammonia water and the balance of water.

The raw materials and equipment used in the invention are common raw materials and equipment in the field if not specified; the methods used in the present invention are conventional in the art unless otherwise specified.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A non-woven dusting material characterized by: comprises a non-woven fabric base material (1) and an adhesive material attached on the surface of the non-woven fabric base material; the surface of the non-woven fabric base material is provided with regularly arranged bulges (2) or holes (3); the height of the protrusion or the depth of the hole is 0.5-4.6 mm; the bulges are rectangular convex stripes which are arranged in a staggered manner; the length of each stripe is 30-60 mm, the width of each stripe is 4-8 mm, and the distance between every two adjacent stripes is a and b, wherein a is more than or equal to 2mm and less than or equal to 4mm, and b is more than or equal to 1mm and less than or equal to 3 mm;

the formula of the viscous material comprises the following components in percentage by mass: 10-60% of a viscous finishing agent, 0-40% of a PA (polyamide) adhesive, 0.6-3.0% of ammonia water and the balance of water; the viscous finishing agent is an aqueous emulsion of an anionic acrylate copolymer, the solid content is 55%, the pH value is 6-7.5, the glass transition temperature is-55 ℃, and the viscosity is 2-10pa.s under the conditions of a 4# rotor, 25 ℃ and 60 rpm; the sticky finishing agent is used for adhering impurities;

1) one or more fibers are sent into a bale opener for preliminary opening and mixing, then the fibers are sent into an opener for loosening large entangled fibers into blocky fibers or fasciculate fibers by tearing, and impurities in the fibers are removed;

2) feeding the opened and mixed fibers into a carding machine, continuously carding the blocky fibers into fasciculate fibers through card clothing on the carding machine, and carding the fasciculate fibers into single fibers to prepare a fluffy fiber net;

3) sending the fluffy fiber net into a pre-wetting procedure, removing air in the fluffy fiber net, and reducing the thickness of the fluffy fiber net to obtain a wet fiber net; then, the wet fiber web is sent into a spunlace machine, and the wet fiber web is reinforced by high-pressure water flow generated on a high-pressure spunlace head, so that fibers in the wet fiber web are preliminarily entangled, and the spunlace fiber web is obtained; then the spunlace fiber web is sent into a jacquard spunlace drum, a jacquard circular net with concave-convex textures or holes is arranged on the jacquard spunlace drum, the concave-convex textures on the jacquard circular net are mapped onto the fluffy spunlace fiber web or the holes are formed on the spunlace fiber web by the impact of high-pressure water flow in a spunlace head, a wet spunlace material with bulges or holes is obtained, the bulges or holes are formed and simultaneously fibers in the spunlace fiber web are intertwined, so that the bulges or holes of the cloth cover are fixed;

4) pumping the wet spunlace material reinforced by jacquard, and keeping the cloth surface bulge or hole effect of the spunlace fiber web unaffected;

5) feeding the pumped wet spunlace material into a foam sizing machine, and applying a viscous material to the wet spunlace material through the foam sizing machine;

2. The nonwoven dusting material of claim 1 wherein the nonwoven substrate is a spunlace nonwoven, a needle-punched nonwoven or a hot-rolled nonwoven; the thickness is 0.6-5 mm.

3. The nonwoven dusting material of claim 1 wherein the nonwoven substrate is made of at least one of polyester fiber, polypropylene fiber, ES fiber, and viscose fiber.

4. The nonwoven dusting material of claim 1 wherein in step 2), two carding machines are provided after opening and mixing of the fibers, wherein one carding machine forms a straight laid web, and the other carding machine is followed by a cross laying machine to form a cross web, and the straight laid web and the cross web are overlapped alternately to form a half-cross fluffy web.

5. The non-woven dust removing material according to claim 1, wherein the pressure in the foam sizing process in the step 5) is 0.08 to 0.15 MPa.