CA2307794A1 - Plate tool having quick-engaging element, provided with work surface - Google Patents
Plate tool having quick-engaging element, provided with work surface Download PDFInfo
- Publication number
- CA2307794A1 CA2307794A1 CA002307794A CA2307794A CA2307794A1 CA 2307794 A1 CA2307794 A1 CA 2307794A1 CA 002307794 A CA002307794 A CA 002307794A CA 2307794 A CA2307794 A CA 2307794A CA 2307794 A1 CA2307794 A1 CA 2307794A1
- Authority
- CA
- Canada
- Prior art keywords
- abrasive article
- carpet
- engaging element
- abrasive
- plastic layer
- 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.)
- Abandoned
Links
- 239000008187 granular material Substances 0.000 claims abstract description 24
- 239000004033 plastic Substances 0.000 claims abstract description 15
- 229920003023 plastic Polymers 0.000 claims abstract description 15
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 7
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 7
- 238000003475 lamination Methods 0.000 claims abstract description 4
- 239000000758 substrate Substances 0.000 claims abstract description 3
- 239000002985 plastic film Substances 0.000 claims description 6
- 229920006255 plastic film Polymers 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 238000005304 joining Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 239000004745 nonwoven fabric Substances 0.000 claims description 2
- 229920000098 polyolefin Polymers 0.000 claims 1
- 239000010410 layer Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000002421 finishing Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000789 fastener Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/58—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres
- B29C70/64—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres the filler influencing the surface characteristics of the material, e.g. by concentrating near the surface or by incorporating in the surface by force
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B18/00—Fasteners of the touch-and-close type; Making such fasteners
- A44B18/0003—Fastener constructions
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
- B24D9/08—Circular back-plates for carrying flexible material
- B24D9/085—Devices for mounting sheets on a backing plate
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention relates to plate tool formed as a multi-layer device having a quick-engaging element, provided with a work surface, comprising a substrate. The plate tool according to the present invention is also suitable for fastening to a tool adapter head. The essence of the invention is that on the opposite side to the work surface of the plate tool, directly or indirectly a plastic layer formed as a part of the engaging element, preferably a thermoplastic film, is fixed, suitably by lamination, and on the external surface of the other side of that plastic layer protrusions, granules forming one unit with the plastic layer, preferably welded into that, are placed.
Description
65.1571DE
- , - -. , ~ ,. a Abrasive article having quick-engaging element, provided with work s surtace Field of the Invention The invention relates to abrasive article formed as a multi-layer device ~o having a quick-engaging element, provided with an abrasive work surface, comprising a substrate. The abrasive article according to the present inven-tion is also suitable for fastening to a tool adapter head. The term "abrading"
as used herein includes all methods of material removal due to frictional contact between contacting surfaces in relative motion, such as grinding, is sanding, polishing, burnishing, and refining.
Technical Field As it is known, for detachable joint of two surfaces of different sub-stances a number of different solutions are wide-spread in practice.
The best known one of the earlier solutions was the snapable "snap-Zo fastener" solution, wherein to several points of the two surfaces to be joined snaps were placed and by being interlocked successively, the two surfaces were fastened detachably. When a surface made of softer material had to be fixed to a harder material, on the softer material resilient, round shaped, concave recesses were usually created which were pressed in the harder Zs surface, thereby after the stop of the pressure, because of the air displaced A~',ynD~O
CA 02307794 2000-04-2~ SWEET
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from the concave recesses of the surface, the round shaped openings of the surface adhered to the hard surface and, simultaneously with the original concave shape regained, vacuum was produced in the concave recesses of the surtace. Thus its tearing off was only possible by applying a suitable s force. Antislip rubber mats, which for example can be placed into baths, are provided with such suction-grip discs.
In the aforementioned solutions on one hand during the opening-closing processes and, on the other hand, in consequence of the forces im-parted on the two surfaces in fastened position, the forces were concen-io trated on the given points or on their surroundings and so the lifetime of the elements taking part in these joints was rather short.
In order to eliminate these deficiencies an engaging element consist-ing of two surfaces was created, wherein on one of the surfaces, as on a base, a hook carpet having hooks placed closely next to each other and on ~s the other surface a loop carpet having loops being able to get caught in the hooks, placed also very close to each other, were formed. After the two sur-faces were pressed into each other, their disjunction can only happen by removing them from each other gradually. That fastening element, usually named "hook and loop fastener", is used mainly in the clothing industry.
Zo It was soon recognized, that to let the two surfaces of the hook and loop fastener fixed to each other slip on each other an extremely large shear force is needed, therefore at places where it is essential, this way of fixing can be economically applied.
One of those fields is, for example, the abrasive technology wherein Zs the fast change of the abrasive surfaces and their reliable clamping to the driving tool is extremely important, and at the same time typically a stress of P
1 1 f 1 , 1 ! n , , 1 1 r f 1 f , f 1 , , ! 1 , n t 1 1 1 , - 31- , , , , ~ 1 , , 1 , , , 1 ~ , , , 1 , 1 1 a , ~ a 1 1 " " " " ,11 ,1 "
shearing direction arises during the work. Solutions of this kind are de-scribed in the patent specifications Nos. DE-OS 1 577 588 and DE 32 19 344 A1. In this latter specification the surtace of the hook and loop fastener provided with a hook carpet is placed on a driving disc while the receptive s surface of the hook and loop fastener comprising a loop carpet is formed on the side of the polishing plate opposite to its abrasive surface.
In the practice of today's abrasive technology the attachments for abrasive hand tools are also constructed in that way.
Although solutions of this kind satisfy the emerged requirements from io the technological point of view, their removal, detachment, change, i.e.
all sorts of disjunction of the joint, is made by tearing, which, on one hand, needs extra energy expenditure and, on the other hand, because of the bending of the abrasive plate during the "tearing" process, the lifetime of the abrasive surface of the plate, which is not too long anyway, is reduced in Is contradiction to the relatively long lifetime of the other component of the hook and loop fastener fixed on the other side of the abrasive plate. Ac-cordingly, the application of the expensive hook and loop fasteners having a relatively long lifetime in the abrasive technology is not really economical.
The fact, that at solutions of this kind considerable mechanical stress Zo arises is also confirmed by US patent specification No 5 170 595, wherein, in order to avoid damage, a special ear ('tab member') is constructed.
From the prior art on the other hand, a plastic film is also known, which, in accordance with another solution of our own, is prepared in a way that particles consisting of the substance of the film and/or other plastic ma-Zs terial being able to weld together with that, and having suitable granule size andlor abrasion resistance are brought to the surface to be roughed of semi-.,, n~~~CF~ SH~E~
1 1 1 1 1 1 1 1 f n n 1 1 1 1 1 1 '_ 4 ( _1 1 1 1 , 1 , , , 1 1 1 , , , , , ! ~ 1 1 1 1 1 , 1 1 , t I
, 1 ~ 1 1 1 ~ , 1 1 . . . 1 . 1 1 , ; 1 . 1 , 1 1 1 finished product having sufficient reserved heat content to maintain condition appropriate for welding of the thermoplastic film surtace to be roughed or to one or both film-surfaces re-heated to such temperature and are dispersed in suitable closeness and configuration and that condition of the roughed s surface is maintained until desired welding process is completed. When two surfaces roughed with that kind of method are placed on each other the fric-tion resistance will be substantially increased in comparison with plastic films having smooth surfaces and in most cases the two surfaces can practically be prevented from splipping on each other.
Io The gripping-frictional force acting between the two roughed surfaces is not enough to overcome the shear force acting between the engaging elements of the finishing machines, thus the roughed films are not suitable for such purposes.
Disclosure of the Invention is Therefore the object of the present invention is to provide an abrasive article supplied with a quick-engaging element, wherein such a way of fas-tening may be attained which, to a similar extent as with the hook and loop fastener, is able to withstand the shear force necessarily acting in the course of abrading process, but is substantially simpler, its removal and change is Zo cheaper and can be carried out more easily.
The invention is based on the recognition that while the penetration of hooks - arranged along the penetrating surface of the hook and loop fas-tener - into the loops of the receptive surface makes it difficult to disjunct the two surfaces from each other, to provide the proper grip it is enough to set Zs such a penetrating surface against the receptive surface supplied with loops, which is roughed to such an extent that its protrusions are able to ent ~~be SHEEN
CA 02307794 2000-04-27 ~~~ Ep I -, v 1 ~ , . r , , . n n I 1 ~ n n 1s , . n . .
tween the loops of the receptive surtace land the elements creating the sur-face's roughness - i.e. protrusions which are constituted by granules - by getting caught in the loops are able to prevent the slipping on each other, thereby such an attachment is gained, wherein the two surfaces "adhere" to s each other to the required extent and so are invariably able to counteract the shear force while, at the change, the elements creating the roughness can easily be lifted off the loops; in this way the two surfaces can easily be de tached. It may be explained with that for the separation of the surfaces no resilient deformation of the protrusions is needed. The invention is based on c ~o the recognition that the receptive surface provided with loops of the hook and loop fastener, known per se, being attached with the plastic film roughed with protrusions, which are constituted by granules creates such a joint, which is suitable for constructing a quick-engaging element. In addition, we have found that alternatively, the receptive portion does not necessarily Is contain loops, but optionally it can also be made of a non-woven fabric con-sisting of fibres which are able to sustain the said protrusions. The lifting off resistance can be increased by bringing a layer of self adhesive glue binding by pressure to the surface provided with protrusions, which are constituted by granules or to a portion of that or to several smaller portions of that.
ao Thus the essence of the invention is that on the opposite side to the work surface of the abrasive article, directly or indirectly a plastic layer formed as a part of the engaging element, preferably a thermoplastic film, is fixed, suitably by lamination, and on the external surface of the other side of that plastic layer protrusions, which are constituted by granules forming one Zs unit with the plastic layer, preferably welded into that, are placed.
ca o230~~94 Zooo-o4-2~ ,~A~Np~O S~~E~
'- 6 :-' ; ' ; ; ; , ;
Best Mode for Carryina Out the Invention For better understanding the invention further will be described in de-tail with reference to the accompanying drawing wherein s FIG. 1 is a front elevational view of one alternate embodiment of the abrasive article in accordance with the present invention together with the tool adapter head in detached form.
FIG. 2 is an axonometric view of a part of a sanding belt with spliced ends in the application environment of a cylinder.
r io The tool adapter head (1 ) as shown in FIG. 1 in case of rotary finish-ing machines, for example sanding or polishing machines is a disk while in case of hand tools it has a with quadrangular joining surtace. Accordingly the abrasive article (2) which may be attached to that, may also be a multi-layer processing device having a disc shaped or quadrangular work surface (3).
is For example the work surface (3) of the abrasive article (2) is formed as an abrasive or polishing surface. On the opposite side to the work surtace (3) of the abrasive article (2) directly or indirectly a plastic layer (4) formed as one component of the engaging element, preferably a thermoplastic film, is fixed, preferably by lamination, and on the surface opposite to the mounted side of Zo that plastic layer (4) a granule carpet (5) consisting of granules having ran-dom distribution and random shape and forming one unit with the plastic layer (4) is formed. As thermoplastic film suitably a polyethylene film is used.
Work surface (3) on the opposite side to the mounted side to the abrasive article (2) is constructed in the form of an abrasive surface. The other com-Zs ponent of the engaging element is a fabric, practically corresponding to the CA 02307794 2000-04-27 z3sa~~'~ SH
,. ,; ,_y;_,w; ,; ~~~, y . ;
loop member of the hook and loop fasteners, placed on the ~ tool adapter head (1 ), being covered by loop carpet (fi) consisting of resilient loops pro-jecting from the surface or non-woven.
When the surface of the plastic film (4) of the abrasive article (2) cov-s ered by granule carpet (5) is placed on the surtace of the tool adapter head (1 ) provided with the loop carpet (6) suitable for clamping the abrasive article (2), then the random shaped engaging granules penetrate the loops of the loop carpet (6). When the shear force encountered at the start of the sand-ing process wants to slip the two engaging surfaces is relation to each other, io the engaging granules are getting caught in the loops and their shape pre-vent them from slipping out of the loops. It is preferable, if the closeness of the granules in the granule carpet (5) and the closeness of the loops in the loop carpet (6) are the same or at least are approximately the same, be-cause in that way can be assured, that the greatest part of the granules are is able to find a loop to catch.
In the course of placing the two surfaces on top of each other, before putting to work, when the engaging granules are positioned next to the loops, then the joint between the two surfaces rnay only be formed if the two surfaces are moved in relation to each other in the intertacial plane of the Zo surfaces. That can be replaced by the application of a thin self adhesive glue layer binding by pressure. The thickness of the adhesive layer is less than the average projection of the engaging granules.
As it is shown by its axonometric view in FIG. 2, a portion of a sanding belt (7) in the environment of a cylinder (8) applied as a work surface (3) of Zs spliced ends presents a solution which, by using the joint of the hook and CA 02307794 2000-04-2~ p~rlE~D~D D~~~~
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loop fasteners, could not be realized' until now. The abrasive surface is formed on the external side of the sanding belt (7) not being in contact with the cylinder (8), the plastic film (4) is positioned on its internal side being in contact with the cylinder (8), turning towards the cylinder (8) with its granule s carpet (5), while the loop carpet (6) is constructed on the surface of the cyl-finder jacket (8). Under one revolution of the sanding belt (7) the two sur-faces (complementary engaging elements) are engaged and detached twice.
The cheapest hook and loop fasteners known today deteriorate after fas-tening about 3 to 5 hundred times, however even the hook and loop fasten-to ers having the longest lifetime are not able to engage and disengage more than 10 to 12 thousand times. It means that even the latter deteriorate after to 6 thousand revolutions. The engaging element of the present invention is able to resist at least as long as it is required from the point of view of the lifetime of the abrasive surface, is significantly cheaper and so considerably is more economical.
~.c";~'~y~ S~'~~
- , - -. , ~ ,. a Abrasive article having quick-engaging element, provided with work s surtace Field of the Invention The invention relates to abrasive article formed as a multi-layer device ~o having a quick-engaging element, provided with an abrasive work surface, comprising a substrate. The abrasive article according to the present inven-tion is also suitable for fastening to a tool adapter head. The term "abrading"
as used herein includes all methods of material removal due to frictional contact between contacting surfaces in relative motion, such as grinding, is sanding, polishing, burnishing, and refining.
Technical Field As it is known, for detachable joint of two surfaces of different sub-stances a number of different solutions are wide-spread in practice.
The best known one of the earlier solutions was the snapable "snap-Zo fastener" solution, wherein to several points of the two surfaces to be joined snaps were placed and by being interlocked successively, the two surfaces were fastened detachably. When a surface made of softer material had to be fixed to a harder material, on the softer material resilient, round shaped, concave recesses were usually created which were pressed in the harder Zs surface, thereby after the stop of the pressure, because of the air displaced A~',ynD~O
CA 02307794 2000-04-2~ SWEET
.'; '_2;: ; '; ; ; ; ; ;
; ~ , . . " ;
", ".. ", ..
from the concave recesses of the surface, the round shaped openings of the surface adhered to the hard surface and, simultaneously with the original concave shape regained, vacuum was produced in the concave recesses of the surtace. Thus its tearing off was only possible by applying a suitable s force. Antislip rubber mats, which for example can be placed into baths, are provided with such suction-grip discs.
In the aforementioned solutions on one hand during the opening-closing processes and, on the other hand, in consequence of the forces im-parted on the two surfaces in fastened position, the forces were concen-io trated on the given points or on their surroundings and so the lifetime of the elements taking part in these joints was rather short.
In order to eliminate these deficiencies an engaging element consist-ing of two surfaces was created, wherein on one of the surfaces, as on a base, a hook carpet having hooks placed closely next to each other and on ~s the other surface a loop carpet having loops being able to get caught in the hooks, placed also very close to each other, were formed. After the two sur-faces were pressed into each other, their disjunction can only happen by removing them from each other gradually. That fastening element, usually named "hook and loop fastener", is used mainly in the clothing industry.
Zo It was soon recognized, that to let the two surfaces of the hook and loop fastener fixed to each other slip on each other an extremely large shear force is needed, therefore at places where it is essential, this way of fixing can be economically applied.
One of those fields is, for example, the abrasive technology wherein Zs the fast change of the abrasive surfaces and their reliable clamping to the driving tool is extremely important, and at the same time typically a stress of P
1 1 f 1 , 1 ! n , , 1 1 r f 1 f , f 1 , , ! 1 , n t 1 1 1 , - 31- , , , , ~ 1 , , 1 , , , 1 ~ , , , 1 , 1 1 a , ~ a 1 1 " " " " ,11 ,1 "
shearing direction arises during the work. Solutions of this kind are de-scribed in the patent specifications Nos. DE-OS 1 577 588 and DE 32 19 344 A1. In this latter specification the surtace of the hook and loop fastener provided with a hook carpet is placed on a driving disc while the receptive s surface of the hook and loop fastener comprising a loop carpet is formed on the side of the polishing plate opposite to its abrasive surface.
In the practice of today's abrasive technology the attachments for abrasive hand tools are also constructed in that way.
Although solutions of this kind satisfy the emerged requirements from io the technological point of view, their removal, detachment, change, i.e.
all sorts of disjunction of the joint, is made by tearing, which, on one hand, needs extra energy expenditure and, on the other hand, because of the bending of the abrasive plate during the "tearing" process, the lifetime of the abrasive surface of the plate, which is not too long anyway, is reduced in Is contradiction to the relatively long lifetime of the other component of the hook and loop fastener fixed on the other side of the abrasive plate. Ac-cordingly, the application of the expensive hook and loop fasteners having a relatively long lifetime in the abrasive technology is not really economical.
The fact, that at solutions of this kind considerable mechanical stress Zo arises is also confirmed by US patent specification No 5 170 595, wherein, in order to avoid damage, a special ear ('tab member') is constructed.
From the prior art on the other hand, a plastic film is also known, which, in accordance with another solution of our own, is prepared in a way that particles consisting of the substance of the film and/or other plastic ma-Zs terial being able to weld together with that, and having suitable granule size andlor abrasion resistance are brought to the surface to be roughed of semi-.,, n~~~CF~ SH~E~
1 1 1 1 1 1 1 1 f n n 1 1 1 1 1 1 '_ 4 ( _1 1 1 1 , 1 , , , 1 1 1 , , , , , ! ~ 1 1 1 1 1 , 1 1 , t I
, 1 ~ 1 1 1 ~ , 1 1 . . . 1 . 1 1 , ; 1 . 1 , 1 1 1 finished product having sufficient reserved heat content to maintain condition appropriate for welding of the thermoplastic film surtace to be roughed or to one or both film-surfaces re-heated to such temperature and are dispersed in suitable closeness and configuration and that condition of the roughed s surface is maintained until desired welding process is completed. When two surfaces roughed with that kind of method are placed on each other the fric-tion resistance will be substantially increased in comparison with plastic films having smooth surfaces and in most cases the two surfaces can practically be prevented from splipping on each other.
Io The gripping-frictional force acting between the two roughed surfaces is not enough to overcome the shear force acting between the engaging elements of the finishing machines, thus the roughed films are not suitable for such purposes.
Disclosure of the Invention is Therefore the object of the present invention is to provide an abrasive article supplied with a quick-engaging element, wherein such a way of fas-tening may be attained which, to a similar extent as with the hook and loop fastener, is able to withstand the shear force necessarily acting in the course of abrading process, but is substantially simpler, its removal and change is Zo cheaper and can be carried out more easily.
The invention is based on the recognition that while the penetration of hooks - arranged along the penetrating surface of the hook and loop fas-tener - into the loops of the receptive surface makes it difficult to disjunct the two surfaces from each other, to provide the proper grip it is enough to set Zs such a penetrating surface against the receptive surface supplied with loops, which is roughed to such an extent that its protrusions are able to ent ~~be SHEEN
CA 02307794 2000-04-27 ~~~ Ep I -, v 1 ~ , . r , , . n n I 1 ~ n n 1s , . n . .
tween the loops of the receptive surtace land the elements creating the sur-face's roughness - i.e. protrusions which are constituted by granules - by getting caught in the loops are able to prevent the slipping on each other, thereby such an attachment is gained, wherein the two surfaces "adhere" to s each other to the required extent and so are invariably able to counteract the shear force while, at the change, the elements creating the roughness can easily be lifted off the loops; in this way the two surfaces can easily be de tached. It may be explained with that for the separation of the surfaces no resilient deformation of the protrusions is needed. The invention is based on c ~o the recognition that the receptive surface provided with loops of the hook and loop fastener, known per se, being attached with the plastic film roughed with protrusions, which are constituted by granules creates such a joint, which is suitable for constructing a quick-engaging element. In addition, we have found that alternatively, the receptive portion does not necessarily Is contain loops, but optionally it can also be made of a non-woven fabric con-sisting of fibres which are able to sustain the said protrusions. The lifting off resistance can be increased by bringing a layer of self adhesive glue binding by pressure to the surface provided with protrusions, which are constituted by granules or to a portion of that or to several smaller portions of that.
ao Thus the essence of the invention is that on the opposite side to the work surface of the abrasive article, directly or indirectly a plastic layer formed as a part of the engaging element, preferably a thermoplastic film, is fixed, suitably by lamination, and on the external surface of the other side of that plastic layer protrusions, which are constituted by granules forming one Zs unit with the plastic layer, preferably welded into that, are placed.
ca o230~~94 Zooo-o4-2~ ,~A~Np~O S~~E~
'- 6 :-' ; ' ; ; ; , ;
Best Mode for Carryina Out the Invention For better understanding the invention further will be described in de-tail with reference to the accompanying drawing wherein s FIG. 1 is a front elevational view of one alternate embodiment of the abrasive article in accordance with the present invention together with the tool adapter head in detached form.
FIG. 2 is an axonometric view of a part of a sanding belt with spliced ends in the application environment of a cylinder.
r io The tool adapter head (1 ) as shown in FIG. 1 in case of rotary finish-ing machines, for example sanding or polishing machines is a disk while in case of hand tools it has a with quadrangular joining surtace. Accordingly the abrasive article (2) which may be attached to that, may also be a multi-layer processing device having a disc shaped or quadrangular work surface (3).
is For example the work surface (3) of the abrasive article (2) is formed as an abrasive or polishing surface. On the opposite side to the work surtace (3) of the abrasive article (2) directly or indirectly a plastic layer (4) formed as one component of the engaging element, preferably a thermoplastic film, is fixed, preferably by lamination, and on the surface opposite to the mounted side of Zo that plastic layer (4) a granule carpet (5) consisting of granules having ran-dom distribution and random shape and forming one unit with the plastic layer (4) is formed. As thermoplastic film suitably a polyethylene film is used.
Work surface (3) on the opposite side to the mounted side to the abrasive article (2) is constructed in the form of an abrasive surface. The other com-Zs ponent of the engaging element is a fabric, practically corresponding to the CA 02307794 2000-04-27 z3sa~~'~ SH
,. ,; ,_y;_,w; ,; ~~~, y . ;
loop member of the hook and loop fasteners, placed on the ~ tool adapter head (1 ), being covered by loop carpet (fi) consisting of resilient loops pro-jecting from the surface or non-woven.
When the surface of the plastic film (4) of the abrasive article (2) cov-s ered by granule carpet (5) is placed on the surtace of the tool adapter head (1 ) provided with the loop carpet (6) suitable for clamping the abrasive article (2), then the random shaped engaging granules penetrate the loops of the loop carpet (6). When the shear force encountered at the start of the sand-ing process wants to slip the two engaging surfaces is relation to each other, io the engaging granules are getting caught in the loops and their shape pre-vent them from slipping out of the loops. It is preferable, if the closeness of the granules in the granule carpet (5) and the closeness of the loops in the loop carpet (6) are the same or at least are approximately the same, be-cause in that way can be assured, that the greatest part of the granules are is able to find a loop to catch.
In the course of placing the two surfaces on top of each other, before putting to work, when the engaging granules are positioned next to the loops, then the joint between the two surfaces rnay only be formed if the two surfaces are moved in relation to each other in the intertacial plane of the Zo surfaces. That can be replaced by the application of a thin self adhesive glue layer binding by pressure. The thickness of the adhesive layer is less than the average projection of the engaging granules.
As it is shown by its axonometric view in FIG. 2, a portion of a sanding belt (7) in the environment of a cylinder (8) applied as a work surface (3) of Zs spliced ends presents a solution which, by using the joint of the hook and CA 02307794 2000-04-2~ p~rlE~D~D D~~~~
;','; '_ g;_' : ': ; ' : ;
' , , ' , ~ ; a ; ' , . ;
loop fasteners, could not be realized' until now. The abrasive surface is formed on the external side of the sanding belt (7) not being in contact with the cylinder (8), the plastic film (4) is positioned on its internal side being in contact with the cylinder (8), turning towards the cylinder (8) with its granule s carpet (5), while the loop carpet (6) is constructed on the surface of the cyl-finder jacket (8). Under one revolution of the sanding belt (7) the two sur-faces (complementary engaging elements) are engaged and detached twice.
The cheapest hook and loop fasteners known today deteriorate after fas-tening about 3 to 5 hundred times, however even the hook and loop fasten-to ers having the longest lifetime are not able to engage and disengage more than 10 to 12 thousand times. It means that even the latter deteriorate after to 6 thousand revolutions. The engaging element of the present invention is able to resist at least as long as it is required from the point of view of the lifetime of the abrasive surface, is significantly cheaper and so considerably is more economical.
~.c";~'~y~ S~'~~
Claims (9)
1. Abrasive article formed as a multi-layer device having a quick-engaging element, provided with an abrasive work surface, comprising a substrate characterized in that on the opposite side to the work surface (3) of the abrasive article (2) directly or indirectly a plastic layer (4) formed as one component of the engaging element, preferably a thermoplastic film, is fixed, suitably by lamination, and on the external surface of the other side of that plastic layer (4) protrusions which are constituted by granules, forming one unit with the plastic layer (4), preferably welded into that, are placed.
2. Abrasive article as claimed in claim 1 wherein on the surface of the plastic layer (4), on the side opposite to its fixed side, a granule carpet (5) comprising engaging granules having random distribution and/or random shape and forming one unit with the plastic layer (4) is formed.
3. Abrasive article as claimed in claim 1 wherein the work surface (3) on the opposite side to the laminated side of the abrasive article (2) is constructed in the form of an abrasive surface.
4. Abrasive article as claimed in any of claims 1 to 3 wherein the component formed as one part of the engaging element is suitable for joining either with a loop carpet (6) consisting of resilient loops projecting from the surface or with a non-woven fabric.
5. Abrasive article as claimed in claim 4 wherein the component formed as one part of the engaging element is suitable for joining with thermo-fleece.
6. Abrasive article as claimed in any of claims 1 to 5 wherein on the granule carpet (5) or on a part (or parts) of that a self-adhesive glue carpet binding by pressure is formed.
7. Abrasive article as claimed in any of claims 4 to 6 wherein the closeness of the engaging granules of the granule carpet (5) and the closeness of the loops of the loop carpet (6) to be joined are approximately the same.
8. Abrasive article as claimed in any of claims 1 to 7 wherein the thermoplastic layer is a polyolefin film.
9. Abrasive article as claimed in any of claims 1 to 8 wherein the band shaped abrasive article (2) with spliced ends is a sanding belt (7) and on the external side of that sanding belt (7) the work surface (3), while on its internal side a granule carpet (5) forming one unit with the plastic film (4) constructing one part of the engaging element is arranged, and a loop carpet (6) to be joined forming the other component of the engaging element is created on the cylinder-jackets of the two cylinders (8) used for moving the sanding belt (7) of spliced ends.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HUP9701761 | 1997-10-29 | ||
| HU9701761A HU219837B (en) | 1997-10-29 | 1997-10-29 | Flat tool with quick coupling element and quick coupling system |
| PCT/HU1998/000011 WO1999021683A1 (en) | 1997-10-29 | 1998-02-02 | Plate tool having quick-engaging element, provided with work surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2307794A1 true CA2307794A1 (en) | 1999-05-06 |
Family
ID=89995700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002307794A Abandoned CA2307794A1 (en) | 1997-10-29 | 1998-02-02 | Plate tool having quick-engaging element, provided with work surface |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1027192A1 (en) |
| JP (1) | JP2001520943A (en) |
| AU (1) | AU6224798A (en) |
| CA (1) | CA2307794A1 (en) |
| HU (1) | HU219837B (en) |
| WO (1) | WO1999021683A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001033989A1 (en) * | 1999-11-09 | 2001-05-17 | Mandzsu Jozsef Sen | Method and apparatus for producing the male component of a separable fastener, the product produced in this manner and the system containing this product |
| JP5600400B2 (en) * | 2009-05-26 | 2014-10-01 | 株式会社クラレ | Polishing apparatus and polishing pad fixing method |
| DE102018121625A1 (en) * | 2018-09-05 | 2020-03-05 | Rud. Starcke Gmbh & Co. Kg | Grinding device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3550837A (en) * | 1969-04-14 | 1970-12-29 | American Velcro Inc | Releasable closure fastening means |
| US4322920A (en) * | 1979-10-29 | 1982-04-06 | Wells Raymond E | Rotary floor conditioning machine attachment |
| US4833017A (en) * | 1987-04-17 | 1989-05-23 | Mobil Oil Corporation | Particle-impregnated one-sided cling stretch wrap film |
| CA2113318A1 (en) * | 1993-01-28 | 1994-07-29 | Robert J. Jantschek | Abrasive attachment system for rotative abrading applications |
-
1997
- 1997-10-29 HU HU9701761A patent/HU219837B/en not_active IP Right Cessation
-
1998
- 1998-02-02 AU AU62247/98A patent/AU6224798A/en not_active Abandoned
- 1998-02-02 CA CA002307794A patent/CA2307794A1/en not_active Abandoned
- 1998-02-02 EP EP98904306A patent/EP1027192A1/en not_active Withdrawn
- 1998-02-02 WO PCT/HU1998/000011 patent/WO1999021683A1/en not_active Ceased
- 1998-02-02 JP JP2000517823A patent/JP2001520943A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO1999021683A1 (en) | 1999-05-06 |
| EP1027192A1 (en) | 2000-08-16 |
| AU6224798A (en) | 1999-05-17 |
| JP2001520943A (en) | 2001-11-06 |
| HUP9701761A2 (en) | 1999-05-28 |
| HU219837B (en) | 2001-08-28 |
| HU9701761D0 (en) | 1997-12-29 |
| HUP9701761A3 (en) | 1999-06-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |