CN107866755A - Abrasive material holder - Google Patents
Abrasive material holder Download PDFInfo
- Publication number
- CN107866755A CN107866755A CN201710800200.9A CN201710800200A CN107866755A CN 107866755 A CN107866755 A CN 107866755A CN 201710800200 A CN201710800200 A CN 201710800200A CN 107866755 A CN107866755 A CN 107866755A
- Authority
- CN
- China
- Prior art keywords
- adhesive
- holder
- bonded fabric
- bonded
- abrasive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
- B24D11/02—Backings, e.g. foils, webs, mesh fabrics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/001—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as supporting member
- B24D3/002—Flexible supporting members, e.g. paper, woven, plastic materials
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- 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
- D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- 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
- D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
Abstract
The present invention relates to a kind of abrasive material holder, and it includes adhesive-bonded fabric, and the adhesive-bonded fabric is the ventilation heat bonding adhesive-bonded fabric comprising multicomponent binder fibre.The invention further relates to a kind of method for forming the holder, and application of the holder in abrasive product is prepared.
Description
Technical field
The present invention relates to abrasive material holder, the method for forming the holder, and the holder is in the abrasive material system of preparation
Application in product.
Background technology
Abrasive product generally includes holder, abrasive material and the adhesive by abrasive material fixation on the support.In abrasive product
Holder must be fulfilled for various technical requirements.Especially, holder should be tough and tensile and strong, in order to avoid torn during grinding
Split, so as to which abrasive power is efficiently delivered on workpiece.In addition holder should also have the flexibility of height, to meet workpiece
Profile, without being permanently deformed in process of lapping.
Paper can be typically used as holder, such as when manufacturing sand paper.When being surface-treated in various industrial circles,
Sand paper plays an important role.It is using the shortcomings that sand paper, it does not have gratifying mechanical performance, therefore often makes
With middle tear, it is necessary to change early.
It is the fabric solution substituted using knitting.Compared with sand paper, knitting has excellent mechanical property, special
It is not excellent fracture strength, dimensional stability, delamination resistance and flexibility, but the manufacture of knitting holder and remarkable,
It is and often relevant with high manufacturing cost.Knitting holder is unfavorable due to economic cause.
The reason for knitting holder is further unfavorable is that it does not have flat surfaces, and this jeopardizes it and is used for finer abrasive.
The use of thin polymer film is the solution that another is substituted.But thin polymer film is unfavorable, because generally
Their porosity is poor, and this causes to be difficult to fix abrasive material on the surface.
It is also known that adhesive-bonded fabric is used as abrasive material holder.
DE102013224549A1 describes abrasive material holder, and it includes the dipping backing material based on synthetic fibers.Institute
Backing material is preferably the dense mess of continuous filament yarn synthetic fibers.The bonding of backing material and densification are in single step
Occur, this is in industry referred to as hot roll calendering program, and wherein thermoplastic fibre felt passes through the controlled calender of pressure and temperature.
Hot roll calendering technique is disadvantageous in that, because bonding and densification degree are because of the surface relevant with the technique
The normal variation of temperature and pressure and change.Influenceed to reduce these, it is necessary to carry out strict adjustment to the technique.
Occurring too high temperature and/or pressure during calendering may easily cause undesirably to reduce gas permeability and surface roughness.It is another
Aspect, temperature and/or pressure are adjusted too low to cause to bond that poor, not glued long filament, polishing machine be poor, tearing strength
Difference etc..
Another of calendering in the drawing-in point instant contact of two cylinders the disadvantage is that, realize heat transfer.It is this instantaneous
Contact, particularly with of a relatively high speed instant contact, generates the thermograde from surface to material center.Fibrous substrates
More coarse, speed of production is more fast then poorer.This causes to bond relatively poor fiber inside net and excessively glued in its surface
Connect.All or part of delamination of result backing material may occur.
In addition disadvantageously, the thermal stress of the surface fiber caused by calendaring step, limited gas permeability is caused.Table
Fiber on face is flattened and bonded, and which reduce the pore-size on surface, therefore reduces gas permeability.Low-permeable exists
20l/m2In s or less scope, it is bad that it is reflected as penetrating for jointing material.
WO2014137972A1 describes a kind of nonwoven abrasives product, and it has adhesive-bonded fabric net and adhesive, the bonding
Ceramic abrasive particle is attached on the fiber of adhesive-bonded fabric net by agent.Present document relates to based on extremely coarse-fibred bulk materials, the fibre
The fineness degree of dimension is beyond the fiber thickness degree scope for flat material.Due to uneven using crude fibre, nonwoven surface
Even, abrasive grain penetrates into nonwoven structure, and this is to being unfavorable for sand paper.
It is adhesion journey of the abrasive material on abrasive material holder in the manufacture of abrasive product and another importance in
Degree.If adhesiveness is insufficient, high mechanical stress and thermal stress in grinding can make abrasive material depart from holder.
The content of the invention
An object of the invention is, there is provided a kind of improved abrasive material holder, it overcomes traditional mill at least in part
The shortcomings that expecting holder.This abrasive material holder preferably has a high tensile strength, and advantageously also the flexibility with height,
Fracture strength, shape stability, delamination resistance, elasticity and abrasive material adhesiveness.Holder can further should manufacture cheaply.This
The further object of invention is, there is provided the manufacturing process of this kind of holder, the application of this kind of holder and including this kind of branch
Hold the abrasive product of thing.
These targets are realized by the theme of independent claims.Dependent claims are referred to advantageous embodiment.
The invention provides a kind of abrasive material holder, and it includes adhesive-bonded fabric, and the adhesive-bonded fabric is to be glued comprising multicomponent
The ventilation heat bonding adhesive-bonded fabric (through-air thermally bonded nonwoven fabric) of condensating fiber.
Research finds that this holder at least partly overcomes the above-mentioned drawback of conventional abrasives holder.
The present invention provides a kind of abrasive material holder.This abrasive material holder is also referred to as " holder of abrasive product ", " mill
Expect holder ", or just referred to as " holder ".
For purposes of the present invention, term " fiber " is understood to flexible structure, and the structure is for its length
It is very thin.The diameter very little of fiber, adhesive-bonded fabric can be made into by corresponding consolidation method.
Binder fibre for the purpose of the present invention is following fiber：It is being heated to above the molten of at least one polymer of composition
When changing temperature and/or softening point, the fiber at least can form and/or be formed anchoring point and/or bonding region in its point of intersection.
In fact, in these crosspoints, binder fibre can form the mutually viscous of material decision with other fibers and/or with itself.As a result,
Support can be built and the adhesive-bonded fabric of hot consolidation can be obtained.
Term " nonwoven " will be understood to refer to textile by the fiber of any species and the finite length in any source,
Continuous length fiber (long filament) or chopped fiber are formed, and these fibers link together and form fibrous layer (also referred to as in some way
For net), and be bonded together in some way.The scope of the term does not include manufacturing art or braiding by woven, knitting, lace
The product of method manufacture.Fibrous layer or net can be obtained by the various techniques based on net, such as melt spinning, melt-blown, combing, gas
Flow technique or wet lay-up technique.
According to the present invention, fibrous layer forms adhesive-bonded fabric by heat bonding of ventilating.Ventilation bonding is related to hot-air application
In the surface of fibrous layer, hot-air is pulled or pushed by fibrous layer, such as uses negative pressure or suction.Air is pulled by fibrous layer
Allow very fast and uniform heat transmission and make fabric minimizing twisting.Ventilating bonded nonwoven for example can be in hot-air
Obtained in baking oven.Ventilation bonding causes the multicomponent binder fibre in adhesive-bonded fabric to be at least partially formed material lock, so as to viscous
Close adhesive-bonded fabric.
It has been found that compared with hot roll calendering, it is through the cross section of adhesive-bonded fabric, i.e., inside and outside, more uniformly send out
Raw ventilation bonding.This allows to visually distinguish hot roll calendering non-woven fabrics and ventilation bonded nonwoven.Further visual difference
Different to be, compared with bonded nonwoven of ventilating, due to being compressed by calender roll, the adhesive-bonded fabric of hot roll calendering is generally aobvious
Show the surface of flattening.
In order to ensure realizing uniformly bonding through adhesive-bonded fabric cross section, the time of ventilation bonding can be adjusted so that foot
Enough amounts, preferably more or less all fibers are all bonded together.In the case of sheath/core multicomponent binder fibre, sheath
As adhesive, and core is as carrier fibre.
Relatively, the adhesive-bonded fabric of hot roll calendering includes internal fiber, fibre of the internal fiber than nonwoven surface
It is low to tie up bondability.However, the internal fiber of weak bonding causes low peel resistance, it is different that this promotes adhesive-bonded fabric to be divided into
Layer.
Compared with the adhesive-bonded fabric of hot roll calendering, using ventilation bonded nonwoven there is another advantage in that, can
To avoid the over-bonded on surface, the over-bonded may cause surface to have the outward appearance of plastic sheeting.
Furthermore it is possible to undesired gas permeability is avoided to reduce, in hot roll calendering process, due to the work of temperature and pressure
With fibers melt and deformation is made, so as to reduce void size.For example, based on equal densities, the fiber of identical fiber number and fiber point
Cloth, ventilation jointing material can reach more than 50 times of gas permeability.Highly-breathable is an index on fiber-reactive surface in structure,
It can promote the bonding of abrasive grain.
According to the present invention, measured in 200Pa, the gas permeability of adhesive-bonded fabric is preferably 100l/m2S, more preferably above 500l/
m2S, such as in 100l/m2S to 2,000l/m2S, more preferably in 500l/m2S to 2,000l/m2S, more preferably 1,000l/m2s
To 2,000l/m2S, and more preferably 1,200l/m2S to 1,700l/m2S, still more preferably from 1,300l/m2S to 1,500l/m2s。
Highly-breathable is advantageous in that it allows the binding agent hypersynchronous that abrasive grain is fixed to surface.
Compared with the adhesive-bonded fabric of hot roll calendering, ventilation bonded nonwoven is more advantageously：Fiber can keep it
Original-shape, and therefore bigger active surface can be provided, to promote the bonding of abrasive grain.This improves the resistance to of abrasive product
The property used.
In addition, in bonded nonwoven of ventilating, the natural pattern of fiber surface can be retained, it is not required that artificial embossing
To reach the surface roughness of needs.
Another strong point of aeration process based on the fact that：Fiber has the temperature range of bonding activity than substitute technology more
Greatly.
As described above, the application on being intended as abrasive material holder, it is undesired that hot roll calendering assigns adhesive-bonded fabric
Attribute.It is therefore preferable that for example adjust the thickness of adhesive-bonded fabric and density without hot roll calendaring step.Just phase
Instead, for this purpose, adhesive-bonded fabric is compressed preferably in alignment unit.Preferably, calibration steps after adhesion step of ventilating,
It is still red-hot in fiber and occur immediately when being activated to be bonded.The thickness of adhesive-bonded fabric can easily be adjusted by so doing
Degree and density, it is possible thereby to the shortcomings that avoiding hot roll calendering discussed above.
Research finds that ventilation bonding holder of the invention has excellent mechanical performance, particularly high intensity, and (fracture is strong
Degree, dimensional stability, separation resistance and tensile force), wherein influenceing thermosetting by the multicomponent binder fibre of at least part melting
Knot.It has furthermore been found that advantageously, flexibility and elasticity of the holder also with height, in addition, making adhesive and/or abrasive material good
Good attachment.Therefore, holder manufacture it is extremely durable, firm and it is very convenient use abrasive product when it is highly useful.
Found in actual test, holder of the invention advantageously has the high maximum stretching force of following range of：It is excellent
Select more than 110N/50mm, such as from 110N/50mm to 250N/50mm；More preferably above 125N/50mm, such as from 125N/
50mm to 250N/50mm；But more preferably above 140N/50mm, such as from 140N/50mm to 250N/50mm, all measurements are vertical
Carried out on to (MD).Advantageously, holder of the invention is higher than 50N/ in the maximum stretching force that transverse direction (CD) has simultaneously
50mm, more preferably beyond 58N/50mm, such as from 58N/50mm to 120N/50mm；But more preferably above 65N/50mm, such as
From 65N/50mm to 120N/50mm.
Tensile force on longitudinal direction is typically larger than the tensile force in transverse direction.When using sand paper in continuously rotation abrasive band, about
2:MD/CD tensile forces ratio in the range of 1 is particularly advantageous.The requirement of this kind equipment in the vertical is especially high.The present invention relates to
A kind of adhesive-bonded fabric, tensile force MD and tensile force CD ratio are more preferably at least 1.75:1, more preferably at least 2.0:1, but
More preferably at least 2.25:1.
Certain initial elongation amount is expected to have, to assign holder a certain degree of pendency, but preferably limited final is stretched
Long amount, with the deformation being limited in when continuous abrasive band being installed to sander.
Advantageously, holder has low extension at break in the vertical：Preferably smaller than 40% elongation at break, more preferably
Elongation at break less than 35%, the further preferably elongation at break less than 30%, and preferably less than 25% elongation at break.
Elongation of a relatively high in the horizontal has active influence to manual sanding, in the case of manual sanding, branch
Hold thing and be typically cut into sheet.The holder that the present invention allows to prepare has the elongation at break more than 25% in the horizontal, excellent
Select the elongation at break more than 30%, more preferably above 35% elongation at break, more preferably above 40% elongation at break.
The present invention allows to weigh to of a relatively high mechanical performance with relatively low base.
Advantageously, holder further has high tenacity, is preferably higher than 1.6n/g (50mm) in the vertical, and toughness is excellent
Choosing is higher than 0.8n/g (50mm) in the horizontal.
Finally, holder advantageously has unusual high-tear strength：It is at least 4N in the vertical, is at least in the horizontal
8N, it is highly preferred that being at least 5N in the vertical and being at least 9N in the horizontal, more preferably it is at least 6N in the vertical and in transverse direction
It is upper to be at least 10N.
It is not intended to be limited to any mechanism, it is believed that good mechanical performance is by being thermally bonded the on-woven realized via ventilation
What the specific adhesive tape of thing came.As described above, this bonding contains multicomponent binder fibre by being handled in air oven
Web and obtain.It is preferred that after the adhesion step, when fiber is still activated, at once by making net single by calibration
Member carrys out reduce thickness.In the case where so doing, density can be adjusted to desired level, while bondability may increase
Add.
Gas permeability is related to the density of adhesive-bonded fabric, and the density preferably arrives 0.5g/cm 0.052In the range of, preferably exist
0.1 arrives 0.2g/cm2In the range of, particularly arrive 0.18g/cm 0.152In the range of.
Because the holder of the present invention provides big surface, with anchoring adhesive, abrasive grain is fixed institute by the adhesive
Surface is stated, required binder amount is reduced.Inventor has found that compared with bafta, adhesive can reduce up to 40%, and this has
Help reduce cost of material, energy consumption and higher speed of production.
The holder of the present invention includes multicomponent binder fibre, particularly bicomponent binder fibers, for hot consolidation.With
It is the fiber for including two or more different polymer in the multicomponent binder fibre of the object of the invention, and each polymer
In different segmentations, wherein at least one polymer can be used for and/or for being thermally bonded.It polymerize for wherein at least one
Thing, it is advantageous to make fusing and/or softening point below the fusing of other at least one fibrous materials and/or softening point.One
In individual preferred embodiment, the difference between fusing and/or softening point is at least 10 DEG C, more preferably at least 100 DEG C, for example, 10 DEG C extremely
250℃。
For example, the bicomponent fibre of core-sheath type, has polyester PET core (256 DEG C) and polyethylene sheath (130 DEG C).At this
In the case of kind, the difference between two fusing points is 126 DEG C.
Multicomponent binder fibre may include various fibrous materials, as long as at least one polymer can be used as heating power type
Adhesive component.For the purpose of the present invention, it is preferred that multicomponent binder fibre includes the fibrous material of synthesis type, such as
It is polyolefin (particularly polypropylene and/or polyethylene), polyethylene terephthalate, polybutylene terephthalate (PBT), poly-
(ethylene naphthalate), PBN, polyamide, polyphenylene sulfide, polyolefin, makrolon, and combinations thereof.
Multicomponent binder fibre preferably includes carrier of one or more following polymer as adhesive component：Polyolefin
(particularly polypropylene), polyethylene terephthalate, PLA, polyamide 6 .6 etc..
Multicomponent binder fibre can have different polymer arrangements in single fiber, such as " side by side " arrangement (passes through fibre
Dimension cross section makes one to remember the cake to cut in half, is made up of per half different polymer), " cake of segmentation " or " citrus " arrangement
(make one to remember the cake for being divided into several by the cross section of fiber, every is made up of different polymer, particularly by different
Polymer alternately forms), " island " arrangement through the cross section of fiber (if make one to remember the island of dry polymeric, these island
Surrounded by the ocean of some other polymer) and/or " sheath-core " arrangement (core is made up of the fiber of first polymer, and by
The sheath of second polymer surrounds).
Sheath-core binder fibre is particularly suitable for the purpose of the present invention, more preferably concentric sheath-core.Sheath-core binder fibre contains
There are two kinds of polymer with different softenings and/or fusion temperature.Composition position with relatively low softening temperature and/or fusion temperature
In fiber surface (sheath), and have compared with high softening temperature and/or the composition of fusion temperature in core.Therefore, in sheath-core fiber
In, the effect of adhesive can be realized by being arranged in the material of fiber surface.
Particularly preferably bicomponent fibre, particularly sheath-core binder fibre, it include the combination of polyethylene/polypropylene,
The combination of polyethylene/polyester, the combination of polypropylene/polyester, the combination of copolyesters/polyethylene terephthalate, nylon-6/
Nylon-6,6 combination, the combination of polybutylene terephthalate (PBT)/polyethylene terephthalate.
In a preferred embodiment of the invention, multicomponent binder fibre is sheath-core binder fibre, the fusing of its mesotheca and/
Or fusing of the softening point than core and/or softening point it is low at least 10 DEG C, preferably at least 100 DEG C.
In a further preferred embodiment, multicomponent binder fibre is sheath-core binder fibre, and its mesotheca preferably includes to gather
Alkene, particularly polyethylene, polypropylene, polyacrylic copolymer, polybutylene terephthalate (PBT), the ring of poly terephthalic acid two
Own ester, polyamide 6.Core preferably includes polyolefin (particularly polypropylene), polyethylene terephthalate, PLA, polyamides
Amine 6.6.
It is found to be in actual tests in specially suitable sheath-core binder fibre, sheath includes virgin pp or polypropylene
With other polymers or the mixture of additive, core includes pure polyester or the mixture with additive.In sheath-core binder fibre
In a particularly preferred embodiment, sheath includes polypropylene, and core includes polyester.
In sheath-core binder fibre, be expressed as sheath-nuclear mass of percentage than be preferably 70% to 30% sheath and 30%
To 70% core, more preferably 60% to 40% sheath and 40% to 60% core, more preferably from about 50% sheath and about 50%
Core.
In one embodiment of the invention, adhesive-bonded fabric contains at least 60wt.%, preferably the sheath of 100wt.% amount-
Core fiber, with the gross weight meter of adhesive-bonded fabric.Most preferably, adhesive-bonded fabric is made up of sheath-core fiber.However, sheath-core fiber can
It is used in mixed way with other fibers.The fiber being used in combination with binder fibre can be used as constituent to add.Can be with binder fibre knot
Closing the structural fibers used can be based on：Polyethylene terephthalate (PET), polypropylene, viscose glue,Cotton, polyamides
Amine, PLA (PLA) etc..Structural fibers generally with less than 40wt.%, preferably shorter than 20wt.%, more preferably less than 10wt.%,
More preferably less than 5wt.% percentage addition again, is not added even more preferably (0%).
The fiber being used in combination with binder fibre can also be used as additive.Additive fiber only example can be used as
Such as, silver fiber, stainless steel fibre, sulphur copper material fiber (being referred to as " conductive fiber "), bacteriostatic fiber, coloured fibre etc..Additive
Fiber is so that less than 15%, preferably shorter than 5% percentage adds, and does not add even more preferably (0%).
Multicomponent binder fibre may include continuous filament fibers, chopped fiber or its combination.In a preferred embodiment, it is multigroup
Binder fibre is divided to include chopped fiber.For example, adhesive-bonded fabric may include multicomponent bonding short fiber, the length of the chopped fiber is no less than
About 20 millimeters (mm), no less than about 30 millimeters or at least about 40 millimeters, less than about 110 millimeters, less than about 85 millimeters or less than about
65 millimeters of length, although shorter and longer fiber (such as continuous filament yarn) is also likely to be beneficial.
If it does, the ratio that chopped fiber accounts for multicomponent binder fibre gross weight is advantageously no less than 50wt.%, such as not
Less than 60wt.%, and/or no less than 60wt.%, and/or no less than 70wt.%, and/or no less than 80wt.%, and/or not
Less than 90wt.%, and/or no less than 95wt.%, these ratios are with the gross weight meter of multicomponent binder fibre.Use short fibre
Dimension is advantageous in that, because the manufacture of these fibers is especially economical and has good mechanical property.
In another preferred embodiment of the present invention, multicomponent binder fibre includes continuous long fiber peacekeeping chopped fiber
Mixture.In this embodiment, continuous filament fibers account for the ratio of multicomponent binder fibre gross weight and are advantageously no less than
60wt.%, preferably from 70wt.% to 100wt.%, these ratios are with the gross weight meter of multicomponent binder fibre.
In a further preferred embodiment, multicomponent binder fibre has from 3 to 50 μm, preferably from 5 to 40 μm,
It is preferred that from 10 to 32 μm, more preferably from 12 to 30 μm, particularly from 14 to 28 μm in the range of average fiber denier
(titre)。
In a particularly preferred embodiment of the present invention, multicomponent binder fibre and/or preferred sheath-core binder fibre
Fiber number with 30 millimeters to 65 millimeters of length and/or from 3 to 50 μm.It is further preferred that multicomponent binder fibre includes
Bi-component sheath-core binder fibre based on polyethylene terephthalate core and polypropylene sheath, its fiber number from 14 to 28 μm,
And/or preferred length is 30 millimeters to 65 millimeters.
The hydrophily of holder is relevant with the anchoring of the adhesive of fixed abrasive particle.Particularly, in higher processing speed
Under degree, hydrophily, which can improve, to be coated or impregnated with handling.
In a preferred embodiment of the invention, fibrous material, i.e. multicomponent binder fibre and other fibers, use spinning oil
(spin finish) or similar surfactant are surface-treated, to improve the hydrophily of fiber.Hydrophily can use her
In generation, receives (05) liquid absorption time (second) of test (EdinaTest) 10.1 to measure.Time needed for complete wetting fiber is preferred
Less than 5 seconds, more preferably less than 3 seconds.
Holder can be implemented in a variety of manners, for example, as the continuous or limited sheet material in one or more layers.
In a preferred embodiment of the invention, holder has from 0.1 to 1.2 millimeter, special preferably from 0.2 to 0.8 millimeter
It is not average thickness range from 0.3 to 0.5 millimeter and/or from 40 to 120g/m2, preferably from 50 to 100g/m2, particularly
From 60 to 80g/m2In the range of base weight.
In addition, if it is desired, holder can dye, such as be dyed by rotating.
The holder of the present invention is highly useful when manufacturing abrasive product, particularly in manufacture abrasive belts, abrasive disc or mill
It is particularly useful during tablet.
The present invention also provides a kind of abrasive product, particularly abrasive belts, abrasive disc or abrasive sheet, including according to the present invention's
The adhesive-bonded fabric holder of at least one embodiment, and abrasive material is adhered to the adhesive of nonwoven surface.
The abrasive material of the present invention is unrestricted.Can be used in principle it is any can be applied to holder and can grinding when from
Workpiece removes the material of raw material.Abrasive material can be selected from natural abrasive and manufactured abrasive, particularly diamond, corundum, Buddha's warrior attendant
Sand, garnet, grinding stone, flint, quartz, sandstone, calcedony, flint, quartzite, silica, feldspar, float stone and talcum.People
The example for making abrasive material is boron carbide, cubic boron nitride, aloxite (AI2O3), ceramic alumina, heat treated aluminum, aluminum oxide-oxygen
Change zirconium, glass, carborundum, iron oxide, ramet, cerium oxide, tin oxide, titanium carbide, diamond synthesis, manganese dioxide, oxidation
Zirconium, silicon nitride, and/or the mixture of above material.
Abrasive material is preferably particle, crystal grain, fragment or similar form.Abrasive material preferably has from about 0.1 μm to about
1500 μm, the more preferably average particle size particle size from about 0.1 μm to about 1300 μm and/or not less than 8, more preferably about 9
Mohs hardness (Mohshardness).
In order to by abrasive applications to holder, generally provide adhesive to holder.Used adhesive can be
It is generally used for reference to one of adhesive of abrasive material.Adhesive is preferably selected from by being rubbed with least 50000 grams/mol of weight average
The group of the resin composition of your weight, particularly phenolic resin, epoxy resin, formaldehyde resin, polyurethane resin, urea resin, breast
Gum resin, dextrin, starch, filler, and/or the mixture of above-mentioned substance.
In a preferred embodiment of the invention, adhesive includes bottom and surface layer.Advantageously, bottom is arranged on first
On holder.Then abrasive material is applied, then prepares surface layer.Therefore abrasive product can include adhesive and mill on the support
Material, adhesive include bottom and surface layer.
For example, surface layer may be selected from epoxy resin, phenolic resin, alkyd resin, urea resin or its combination.The surface layer used
Typically hard thermosetting resin, so as to grappling abrasive material.Surface layer may be selected from epoxy resin, phenolic resin, alkyd resin, urea resin
Or its combination.
The abrasive material of the present invention is applicable to wet grind or dry grind.For example, it can be presented as abrasive belts, abrasive disc or abrasive material
Piece.
Invention further provides the application using abrasive product as abrasive belts, abrasive disc or abrasive sheet, and/or its system
Make.
Present invention also offers a kind of method.Methods described can be manufactured described at least one embodiment of the present invention
Abrasive material holder.
At least in one embodiment, method comprises the following steps:
(A) prepare and/or provide the web containing multicomponent binder fibre and/or pre-bonded adhesive-bonded fabric；
(B) ventilation is thermally bonded the web and/or the adhesive-bonded fabric of pre-bonded, is preferably ventilated in heat ventilates stove hot sticky
The web and/or the adhesive-bonded fabric of pre-bonded are closed, with activation and bonded multiple component binder fibre, can be used as grinding so as to be formed
Expect the ventilation heat bonding adhesive-bonded fabric of holder.
Ventilation heat bonding adhesive-bonded fabric preferably corresponds to the holder at least more than one described embodiment.
Step (A):The preparation of web and/or pre-bonded adhesive-bonded fabric can by it is various it is known to those skilled in the art in a manner of
Carry out, such as melt spinning, melt-blown, combing, gas flow process or wet lay-up technique.
Term " web " is interpreted as referring to textile by the fiber of any species and the finite length of origin, continuous
The fiber (long filament) or chopped fiber of length are formed, and these fibers link together and form web (also referred to as net in some way
Or fibrous layer).The pre-bonded of web causes " pre-bonded adhesive-bonded fabric ".Pre-bonded can by intertexture, acupuncture, hot blast, press and smooth
The modes such as light are carried out.
Be described above suitable polymer for producing fiber matting net and/or pre-bonded adhesive-bonded fabric and
Suitable kinds of fibers and type.Polymer may at least one additive containing 150ppm to 15wt.% amount, wherein adding
Agent is added to be selected from the group of following material composition：Colored pigment, antistatic agent, antiseptic, such as copper, silver, gold, or hydrophiling additive.
Allow adaptation to using the additive meet specific customer demand in used polymer.
Using based on PET cores and PP sheaths, fiber number from 14 to 28 μm and/or preferred length is 30 millimeters to 65 millimeters concentric
Bicomponent fibre is most preferred as multicomponent binder fibre.
Step (B):Ventilation heat-bondable fibre net and/or adhesive-bonded fabric can also pass to activate the bonding of multicomponent binder fibre
The mode of system is carried out, for example, pulled by hot-air tunnel oven or the roller that is flowed through by moving hot blast on.As it was previously stated,
It is preferred that binder fibre during this heat bonding not only on the surface between blend, and in web and/or adhesive-bonded fabric
Inside also blend.In doing so, it can be neutralized across whole product obtaining degree with whole thickness and uniformly bonded.Favorably
Ground, in the case of sheath-core binder fibre, due to the sufficiently large fusing point of their difference, outer polymer (sheath) be melted or
Softening, but without the risk for damaging or melting interior polymer (core).In order to ensure being bonded through adhesive-bonded fabric cross-sectional uniformity,
It is preferred that the time of adjustment ventilation bonding, bonds so as to have enough quantity, preferably more or less all fibers to be all activated.
Certainly, the optimal time depends on different parameters, such as the thickness and material of adhesive-bonded fabric.But in many cases, ventilation
The time of bonding is favourable more than 3.0 seconds, such as from 2.5 seconds to 10 seconds.For example, for be subsequently noted have PET cores and
The sheath of PP sheaths-core binder fibre, it can be bonded in 3.5 seconds in regular air by perfect in drum-type baking oven.
Temperature setting can be used for the performance for determining backing material.Advantageously, corresponding temperature is selected, to avoid in fiber
The damage in portion's (core), but ensure comprehensive, uniform binder fibre activation.
Method for optimizing also includes further step (C), in step (C), is passed through by making ventilation be thermally bonded adhesive-bonded fabric
Calibrating installation is crossed, so as to the thickness of the regulation ventilation heat bonding adhesive-bonded fabric when binder fibre still activates.
According to the present invention, adhesive-bonded fabric reaches certain density, is advantageous to the flexibility and intensity of abrasive material holder.It can be
This purpose and be densified, particularly this can be completed by using calibrating installation in step (C).When in online binder fibre
Carried out when still activating, calibration steps is especially effective.This is probably that and then step (B) is obtained by step (B) in a straightforward manner
Adhesive-bonded fabric complete.
Calibrating installation preferably includes two surface of revolution, such as belongs to a pair of belts and/or a pair of cylinders.Two surfaces
The distance between can be arranged to predetermined distance, to compress adhesive-bonded fabric, so as to the thickness and density required for reaching.At this
Plant in alignment unit, what the engraving cylinder being previously mentioned in DE102013224549A1 was not required, because the pressure for calibration
Power is more much lower than bonding required pressure.It can thus be avoided make surface flat.
In a preferred embodiment, two surface of revolution are flat and uniform.In a further preferred embodiment, two
Individual surface of revolution is set to predetermined temperature, to avoid binder fibre from cooling down too early.
By the distance between two surfaces (" folder ") and roller temperature, backing material can be determined in step (C)
Performance.Can be herein using densification, to reach above-mentioned predetermined, favourable highly-breathable.The typical set-up of calibrating installation
Gap can be defined as between 0.01mm and 1.5mm, more preferably between 0.02mm and 1.0mm, more preferably
0.05mm to 0.07mm.Temperature is usually disposed as 10 to 20 DEG C of the temperature setting for the baking oven being activated less than binder fibre, more excellent
Temperature setting 15 DEG C of the choosing less than the baking oven that binder fibre is activated.
As requested, the surface of backing material and/or adhesive-bonded fabric net can be modified, such as soaked or passed through by water
Process of surface treatment minimizing electrostatic charge buildup, such as sided corona treatment or plasma treatment.
Solidifying later fiber matting may be further by chemical bond or finishing operations, such as anti pilling
Reason, further hydrophiling, antistatic process, improve the processing of fire resistance and/or change tactile characteristics or gloss, mechanical treatment,
Such as napping (raising), machine shrunk, polishing or upset (tumbler) processing, and/or change outward appearance processing, such as dyeing or
Printing.
In a further embodiment, after step (C) it is step (D), step (D) by bottom including being applied to fid
That side expect, comprising abrasive material.
For example, bottom may be selected from epoxy resin, phenolic resin, alkyd resin, urea urea formaldehyde or combinations thereof.Resin
It is preferred that it is applied to support in the form of disperse system or solution in appropriate solvent.Then abrasive material can be sprayed onto the bottom still soaked
On layer (step (E)), in this case, individual particle and/or crystal grain can be for example using electrostatic apparatus and the present invention's
Most preferably it is orientated on abrasive material holder.Then, the abrasive material holder of the bottom still soaked and abrasive material attached to it is scribbled
Can be by drying (step (F)), such as in drying oven.After drying, abrasive material and/or support can apply upper layer (step
(G)).The surface layer used is usually hard thermosetting resin, additionally to anchor abrasive material.Surface layer may be selected from epoxy resin, phenolic aldehyde
Resin, alkyd resin, urea resin or its combination.The step of exemplary application of this abrasive material is by solidifying surface layer (step
(H)) complete.
According to preferred embodiment, this method does not include any hot roll calendaring step.
The inventive process provides favourable support, enter but favourable abrasive product.Therefore, also offer can by the present invention
The support that at least one embodiment of the method according to the invention obtains.The present invention also provides the abrasive material system for including this support
Product.This abrasive product can be obtained by the method for preparing abrasive product of at least one embodiment according to the present invention.
Therefore, according to each embodiment, support can be by arriving the side of (H) comprising above-mentioned steps (A), (B) and optional (C)
Method obtains.
Embodiment
Method of testing:
Base weight is determined according to DINENISO536.
According to DINENISO9237:1995, determine gas permeability under 200Pa differential pressure.
According to DINENISO534,20N contact and 200mm are used2Measurement area determine holder or support
The thickness of material.
According to EN13934-1,75gsm base again under, determine that the maximum of vertical and horizontal dries tensile force.
According to EN13934-1,75gsm base again under, determine the drying extension at breaks of vertical and horizontal.
The drying tearing strength of vertical and horizontal is determined according to EN13937-2.
Toughness is by the way that tensile strength (N/50mm) divided by base weight (g/m2) are calculated.
Standard mentioned above uses German form, and the disclosure of which is incorporated herein by reference.
Example:
Prepare the backing material of the present invention
Used backing material is the carded web of sheath-core binder fibre (polypropylene/polyester, chopped fiber), and sheath-core bonds
The avarage fiber diameter of fiber is 2De, equivalent to 17.5 μm.The base weight of backing material is 75g/m2, thickness is 0.44 millimeter,
200Pa gas permeability is 1400l/m2s。
Carded web is heated in 175 DEG C of air oven, in an oven residence time 3.5 seconds, then 155 DEG C with
Fixed 0.12mm gap carries out thermal calibration.
Holder has high-caliber flexibility, fracture strength, dimensional stability, delamination resistance, the distinguishing feature of elasticity.
The characteristic of support material is provided in the table below:
| Parameter | Unit | Numerical value | Method | |
| 1 | Base weight | g/m2 | 76.0 | DINENISO536 |
| 2 | Thickness | mm | 0.44 | DINENISO534 |
| 3 | MD maximum stretching forces | N/50mm | 169.5 | EN13934-1 |
| 4 | MD extension at breaks | % | 43.2 | EN13934-1 |
| 5 | CD maximum stretching forces | N/50mm | 71.2 | EN13934-1 |
| 6 | CD extension at breaks | % | 81.1 | EN13934-1 |
| 7 | Density | g/cm3 | 0.172 | It is calculated by 1 and 2 |
| 8 | Tensile strength MD | N/g(50mm) | 2.23 | It is calculated by 1 and 3 |
| 9 | Tensile strength CD | N/g(50mm) | 0.93 | It is calculated by 1 and 3 |
| 10 | Tearing strength MD | N | 5.98 | EN13937-2 |
| 11 | Tearing strength CD | N | 9.55 | EN13937-2 |
Claims (15)
1. a kind of abrasive material holder, it is characterised in that the abrasive material holder includes adhesive-bonded fabric, and the adhesive-bonded fabric is to include
The ventilation heat bonding adhesive-bonded fabric of multicomponent binder fibre.
2. holder according to claim 1, it is characterised in that the gas permeability that the adhesive-bonded fabric measures under 200Pa
More than 100l/m2In the range of s, and/or the adhesive-bonded fabric density 0.05 to 0.5g/cm2In the range of.
3. holder according to claim 1 or 2, it is characterised in that maximum stretching force MD more than 110N/50mm, and/or
Maximum stretching force CD is higher than 50N/50mm, and/or tensile force MD and tensile force CD ratio are at least 1.75:1.
4. according to the above holder described in one or more claims, it is characterised in that extension at break is less than 35%
MD elongation at breaks and/or the CD elongation at breaks more than 30%.
5. according to the above holder described in one or more claims, it is characterised in that MD toughness is higher than 1.6N/g
(50mm) and/or CD toughness are higher than 0.8N/g (50mm).
6. according to the above holder described in one or more claims, it is characterised in that the holder is in its surface
Without artificial raised.
7. according to the above holder described in one or more claims, it is characterised in that the multicomponent binder fibre bag
Include sheath-core binder fibre, its mesotheca preferably include polyolefin, particularly polyethylene, polypropylene, polyacrylic copolymer, poly- pair
Benzene dicarboxylic acid butanediol ester, poly terephthalic acid dicyclohexyl maleate, polyamide 6；Core preferably include polyolefin, particularly polypropylene,
Polyethylene terephthalate, PLA, polyamide 6 .6.
8. according to the above holder described in one or more claims, it is characterised in that the sheath contains polypropylene, and institute
State core and contain polyester.
9. according to the above holder described in one or more claims, it is characterised in that the sheath-core viscose fibre has
The length of fiber number and/or 30mm to 65mm from 3 to 50 μm.
10. according to the above holder described in one or more claims, it is characterised in that average thickness arrives 1.2mm 0.1
In the range of.
11. according to the above holder described in one or more claims, it is characterised in that the adhesive-bonded fabric contains at least
The sheath of 60% amount-core fiber.
12. according to above application of the holder described in one or more claims in abrasive product is prepared, particularly exist
Prepare the application in lapping tape, abrasive disk or abrasive sheet.
13. manufacture the method for abrasive material holder, it is characterised in that the described method comprises the following steps:
(A) prepare and/or provide the web containing multicomponent binder fibre and/or pre-bonded adhesive-bonded fabric；
(B) ventilation is thermally bonded the web and/or pre-bonded adhesive-bonded fabric, heat bonding of being ventilated preferably in hot blowing air baking oven
The web and/or pre-bonded adhesive-bonded fabric, to activate and bond the multicomponent binder fibre, mill can be used as so as to be formed
Expect the ventilation heat bonding adhesive-bonded fabric of holder.
14. according to the method for claim 13, it is characterised in that methods described further comprises step (C), in the step
In, pass through alignment unit by making ventilation be thermally bonded adhesive-bonded fabric, so as to adjust the ventilation when binder fibre still activates
It is thermally bonded the thickness of adhesive-bonded fabric.
15. the method according to claim 13 or 14, it is characterised in that methods described does not include any hot roll calendering and walked
Suddenly.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP16190322.4A EP3299123B1 (en) | 2016-09-23 | 2016-09-23 | Support for abrasive |
| EP16190322.4 | 2016-09-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107866755A true CN107866755A (en) | 2018-04-03 |
| CN107866755B CN107866755B (en) | 2020-08-28 |
Family
ID=57103810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710800200.9A Active CN107866755B (en) | 2016-09-23 | 2017-09-07 | Abrasive material support |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3299123B1 (en) |
| CN (1) | CN107866755B (en) |
| BR (1) | BR102017019996A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112744060A (en) * | 2019-10-30 | 2021-05-04 | 韦巴斯托股份公司 | Vehicle roller blind arrangement having a roller blind web |
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|---|---|---|---|---|
| US5773120A (en) * | 1997-02-28 | 1998-06-30 | Kimberly-Clark Worldwide, Inc. | Loop material for hook-and-loop fastening system |
| WO2003000976A1 (en) * | 2001-06-22 | 2003-01-03 | University Of Leeds | Fabrics composed of waste materials |
| WO2004097095A1 (en) * | 2003-04-25 | 2004-11-11 | 3M Innovative Properties Company | Scouring material |
| CN1671510A (en) * | 2002-07-26 | 2005-09-21 | 3M创新有限公司 | Abrasive product, method of making and using the same, and apparatus for making the same |
| US20050255794A1 (en) * | 2004-05-11 | 2005-11-17 | Jean Vangsness | Polishing pad |
| CN106392850A (en) * | 2010-12-30 | 2017-02-15 | 圣戈班磨料磨具有限公司 | Abrasive article and method of forming |
| CN106794569A (en) * | 2014-10-07 | 2017-05-31 | 3M创新有限公司 | Abrasive product and correlation technique |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0115276D0 (en) * | 2001-06-22 | 2001-08-15 | Univ Leeds | Fabrics |
| ES2652339T3 (en) | 2013-03-04 | 2018-02-01 | 3M Innovative Properties Company | Abrasive nonwoven article containing shaped abrasive particles |
| DE102013224549A1 (en) | 2013-11-29 | 2015-06-03 | Neenah Gessner Gmbh | Abrasive carrier, abrasive article comprising the abrasive carrier and its manufacturing process |
-
2016
- 2016-09-23 EP EP16190322.4A patent/EP3299123B1/en active Active
-
2017
- 2017-09-07 CN CN201710800200.9A patent/CN107866755B/en active Active
- 2017-09-19 BR BR102017019996-7A patent/BR102017019996A2/en not_active Application Discontinuation
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|---|---|---|---|---|
| US5773120A (en) * | 1997-02-28 | 1998-06-30 | Kimberly-Clark Worldwide, Inc. | Loop material for hook-and-loop fastening system |
| WO2003000976A1 (en) * | 2001-06-22 | 2003-01-03 | University Of Leeds | Fabrics composed of waste materials |
| CN1671510A (en) * | 2002-07-26 | 2005-09-21 | 3M创新有限公司 | Abrasive product, method of making and using the same, and apparatus for making the same |
| WO2004097095A1 (en) * | 2003-04-25 | 2004-11-11 | 3M Innovative Properties Company | Scouring material |
| CN1780953A (en) * | 2003-04-25 | 2006-05-31 | 3M创新有限公司 | Scouring material |
| US20050255794A1 (en) * | 2004-05-11 | 2005-11-17 | Jean Vangsness | Polishing pad |
| CN106392850A (en) * | 2010-12-30 | 2017-02-15 | 圣戈班磨料磨具有限公司 | Abrasive article and method of forming |
| CN106794569A (en) * | 2014-10-07 | 2017-05-31 | 3M创新有限公司 | Abrasive product and correlation technique |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112744060A (en) * | 2019-10-30 | 2021-05-04 | 韦巴斯托股份公司 | Vehicle roller blind arrangement having a roller blind web |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3299123B1 (en) | 2019-05-08 |
| BR102017019996A2 (en) | 2018-05-02 |
| EP3299123A1 (en) | 2018-03-28 |
| CN107866755B (en) | 2020-08-28 |
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