WO2002064317A1 - Support autoagrippant pour un produit abrasif applique et procede de fabrication dudit produit abrasif l'incorporant - Google Patents
Support autoagrippant pour un produit abrasif applique et procede de fabrication dudit produit abrasif l'incorporant Download PDFInfo
- Publication number
- WO2002064317A1 WO2002064317A1 PCT/FR2002/000558 FR0200558W WO02064317A1 WO 2002064317 A1 WO2002064317 A1 WO 2002064317A1 FR 0200558 W FR0200558 W FR 0200558W WO 02064317 A1 WO02064317 A1 WO 02064317A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- support
- velcro
- adhesive
- abrasive
- layer
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/0007—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality
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- 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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B2038/0052—Other operations not otherwise provided for
- B32B2038/0056—Moistening
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B2038/0052—Other operations not otherwise provided for
- B32B2038/0076—Curing, vulcanising, cross-linking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2317/00—Animal or vegetable based
- B32B2317/12—Paper, e.g. cardboard
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24008—Structurally defined web or sheet [e.g., overall dimension, etc.] including fastener for attaching to external surface
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
- Y10T428/24372—Particulate matter
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T428/2481—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including layer of mechanically interengaged strands, strand-portions or strand-like strips
Definitions
- the present invention relates to a hook-and-loop support for an applied abrasive product and the use of such a support for the manufacture of a self-gripping applied abrasive product.
- the invention also relates to the method of manufacturing said abrasive.
- the term “applied abrasive” denotes an abrasive product comprising a support on one face of which abrasive grains are subject.
- Figure 1 shows in section a conventional applied abrasive product (not provided with a Velcro side), the relative proportions of its constituent elements not being respected for greater clarity.
- the abrasive products generally comprise a support (1) provided with two sides, front and back, on one of which (front side) has been deposited a sizing layer (2). then abrasive grains (3) covered with an overgluing layer (4).
- a supergluing layer which is an anti-fouling layer containing for example waxes, zinc stearate.
- the abrasive product may comprise other layers having a special function, for example an antistatic layer containing antistatic agents, these layers being arranged on the preceding layers or between them or on the back of the support.
- the support (1) can be a paper, a nonwoven, a primed canvas or a support based on vulcanized fibers, these supports being able to be combined to have better characteristics of use.
- An applied abrasive is usually made as described below.
- the sizing layer (2) is deposited on the support (1) by an appropriate coating means, for example coating with rollers.
- the sizing layer (2) often called by the skilled person under the English term "make coat” is a composition, preferably made in an aqueous medium, comprising a curable adhesive which can be a natural glue such as gelatin or synthetic resins such as phenolic resins, urea-formaldehyde, melamine-formaldehyde, polyurethanes, epoxy, alkyds, acrylics or their mixtures, adhesive to which a filler is most often added, in particular a mineral filler such as calcium carbonate, cryolite. It can also contain other additives such as, for example, plasticizers, dyes, wetting agents, antistatic products.
- a curable adhesive which can be a natural glue such as gelatin or synthetic resins such as phenolic resins, urea-formaldehyde, melamine-formaldehyde, polyurethanes, epoxy, alkyds, acrylics or their mixtures, adhesive to which a filler is most often added, in particular a mineral
- the abrasive grains (3) are applied. These grains can be deposited by various means, in particular by electrostatic deposition or by gravity.
- These grains can be chosen in particular from aluminum oxide, silicon carbide, garnet, emery, cubic boron nitride or even zirconium oxide; the latter two are the most abrasive.
- the grains can also be in the form of aggregates composed of agglomerated grains, these aggregates having a longer lifespan and providing greater consistency in the quality of the abrasion.
- these grains can have a particle size chosen according to the surface to be abraded and the desired level of polishing. Usually in Europe, these grains are classified according to the standard set by FEPA
- the grade for an applied abrasive product is a reference starting with a P followed by a number indicating the grain number; the higher the number, the finer the grain.
- composition (2) and the abrasive grains (3) can be deposited together if they have been premixed.
- the support thus coated undergoes a first drying.
- the resin of composition (2) is hardened during this drying.
- the drying is generally carried out in a festoon oven or a linear oven.
- the temperatures and the drying times are chosen by a person skilled in the art according to the nature of the composition (2). Most often this treatment is done according to temperature and humidity gradients along the oven; for example, the layer (2) can be dried with the grains (3) for 10 to 15 minutes between 65 and 115 ° C.
- the next step consists in depositing an overgluing composition (4), often called by a person skilled in the art under the English term "size coat", which is produced with the same compounds as those used to make the sizing composition ( 2), the composition (4) being however less viscous than (2) in order to infiltrate well between the abrasive grains (3), without completely covering the grains.
- the layer (2) and the layer (4) can be of different chemical natures, one can associate a layer made with gelatin and a layer with a synthetic resin. This layer (4) makes it possible to strengthen the fixing of the grains.
- the product obtained is then dried again and the resin of the layer (4) is partially or completely cured, depending on the nature of the resin.
- the temperatures and drying times as above are adapted to the nature of the layer.
- the product can be dried between 65 and 120 ° C, for 20 to 140 minutes, in a festoon oven.
- the product obtained is put into a reel, called in terms of profession "jumbo reel".
- thermosetting resins for example phenolic resins
- they are treated in order to completely crosslink the layers (2) and (4) by bringing the coils to a temperature of about 100 to
- the drying and hardening are completely carried out during the second passage in the oven.
- the coil is then allowed to cool, for example to 40 ° C.
- the back side (face not containing the abrasive grains) of the sheet of abrasive product must be repackaged by unwinding it to wet it with water possibly containing additives or with steam and rewinds it again as a coil.
- the coil is thus left for a certain time, from a few hours to a few days, so that it rewets well and that equilibrium is reached.
- the abrasive product may be subjected to a so-called "flexing" step in order to soften it in one or more directions.
- the flexing is conventionally done by unwinding the jumbo reel and passing the sheet under or over a bar at certain angles and then put back in jumbo reel.
- the coils are then cut, if necessary, to the desired format, in particular in the form of a disc, sheet, delta or formats intended to be assembled into an endless strip.
- the support (1) is manufactured separately, in a first step.
- the paper is made from cellulose fibers, possibly in admixture with synthetic fibers, and it generally comprises a bonding agent and possibly other conventional additives used in stationery such as a wet strength agent.
- the support may include antistatic agents, or other products deposited in an aqueous medium by coating or impregnation due to their solubility or coalescence, for example of a polymer of synthetic rubber type giving it flexibility.
- the grammage of the support depends on its use.
- the usual range of grammages is between about 65 and 400 g / m 2 .
- abrasive products are used in the form of discs, deltas, sheets or rolls, for sanding or abrading wooden or metal parts. They are provided on their face devoid of abrasive grains with a Velcro part. They can then be positioned on the sanding tools by fixing this Velcro part to a receiving support provided with a Velcro part complementary to that of the abrasive as explained below.
- the hook-and-loop part of an applied abrasive is most often the so-called female part of a hook-and-loop system and is present on the reverse side of the support (1), this part being a material (fabric, nonwoven) provided with female elements. attachment such as loops, loops, pulled or scraped stitches, or even a nonwoven comprising bicomponent fibers such as that described in patent application WO 9965352.
- the complementary part of the hook-and-loop system present on the receiver of the abrasion tool and therefore the so-called male part, is generally a material provided with male elements often in the form of hooks or mushrooms. In more rare cases, it is the opposite, the female part of the hook-and-loop system is fixed on the receiver of the abrasion tool and the male part is therefore located on the abrasive product.
- the abrasive By simply pressing the female part on the male part, the abrasive is fixed on the tool and can then be removed by hand by pulling with sufficient force. The abrasive can thus be fixed and removed several times without appreciable reduction in the fixing power.
- Such hook-and-loop systems are known in particular under the brand NELCRO®.
- the Velcro part of the abrasive can be joined in different ways on the back side of the support (1).
- One of the ways is to fix by laminating with an adhesive one of the parts of a hook-and-loop system, most often the female part such as a fabric provided with loops or scraped stitches, on the back side of the support (1) once the abrasive applied has been produced, for example according to the process described above.
- the main drawbacks of this method are related to the fact that a product provided with abrasive grains is treated. Indeed it is necessary that the lamination of the self-gripping material is done at reduced speed because there is an abrasion of the machines and because the installation of this material is difficult because of the relief of the grains. It is necessary to take into account the size of the grains and to adapt the process to each series of grains. It is also necessary to store both upstream and downstream the jumbo coils which take up a lot of space.
- the adhesive layer is continuous and full. In general it is in the form of a film or an extruded layer of polyolefins and weighs between 25 to 40 g / m 2 .
- the support (1) is trapped between two closed layers, the sizing layer (2) and the adhesive layer for securing the hook-and-loop part, on the one hand, the evacuation of water vapor is difficult and can cause blisters and on the other hand the penetration of water or water vapor for rehumidification can be difficult.
- this assembly induces stresses in the support which tend to cause it to curl and / or roll its edges, especially since the grammage of the support is low.
- the range of paper supports to be used with this technique of laminating the Velcro material is limited to grammages ranging from 150 to 185 g / m 2 .
- the rewetting time can be several weeks, for example 3 weeks, instead of a few hours.
- the softening point of the adhesive must not be reached during processing in the ovens and during the crosslinking of the grain fixing resin, under penalty of causing the support to become detached, the choice of said resins is limited too.
- Urea-formaldehyde or gelatin resins require a lower crosslinking temperature but are less solid.
- the invention aims to solve the drawbacks mentioned above.
- one of the aims of the invention is to be able to manufacture a self-gripping applied abrasive product according to the same process settings used to manufacture a conventional applied abrasive product (not provided with a self-gripping system).
- a self-gripping support comprising an abrasive support (1) secured to a self-gripping material (la), said support (A) having water vapor permeability greater than 1 gm- 2 per 24 hours.
- the support (A) is characterized in that it comprises an abrasive support (1) secured to a self-gripping material (la) by a porous adhesive matrix (lb).
- a support (A) is shown in section in FIG. 2, the relative proportions of its constituent elements not being observed for greater clarity.
- the abrasive support (1) and the Velcro material (la) are therefore linked by points or connection zones such that said points or connection zones are in discrete form at the connection interface of the sheets.
- the discrete connection points or zones are uniformly distributed at the interface of the sheets.
- the adhesive is a porous adhesive.
- This porous adhesive can be prepared by creating pores in a known adhesive either by the action of a chemical reaction producing a gas and this before, during, after the deposition of the adhesive, or by injecting an inert gas or l air in the adhesive before or during its deposition on one of the sheets. More particularly, the adhesive is in the form of a discontinuous matrix in one of the forms chosen from those by grid, by line and by point.
- the support (A) comprises, by dry weight, from 4 to 15 g / m 2 of adhesive, more preferably between approximately 6 and 8 g / m 2 .
- a crosslinkable adhesive is preferably used, its higher cost being advantageously compensated for by the small quantity required and, moreover, this small quantity allows better crosslinking.
- the abrasive may be subjected to a wide range of temperatures and therefore the use of resins for the abrasive grains according to a wide choice. Therefore, preferably the support (A) is characterized in that the adhesive is crosslinkable when hot or in moisture.
- said adhesive is chosen from vinyl adhesives, hot-melt adhesives, called hot-melt adhesives.
- the adhesive will be chosen according to its mode of application.
- an adhesive will be used as adhesive usually used in the field of papermaking as certain polymers used in the form of stable aqueous emulsion such as in particular polyvinyls, polyacrylates, polyurethanes, styrene-butadiene copolymers optionally carboxylated.
- Adhesive deposition can be done at a rate of 60 m / min. If the adhesive is applied using a suitable nozzle to make discontinuous adhesive matrices, hot melt glues will be used. In this case, the adhesive can be deposited at the rate of 50 to 150 m / min.
- the adhesive is a hot-melt adhesive of polyurethane type crosslinkable by moisture.
- the support (A) is characterized in that said support (1) is chosen from primed fabrics, sheets of paper or nonwoven based on possibly vulcanized cellulose fibers and / or synthetic fibers.
- the support (1) is a paper based on optionally vulcanized cellulose fibers and / or synthetic fibers and comprises at least one mass bonding agent.
- the support (1) is characterized in that it has a grammage of between 65 and 400 g / m 2 .
- the support (A) is characterized in that said self-gripping material is of polyamide or polyolefin nature.
- the support (A) is characterized in that said self-gripping material has a grammage of between 30 and 105 g / m 2 .
- said Velcro material (lb) is based on a fabric or a nonwoven.
- said hook-and-loop material (lb) is the female part of a hook-and-loop system.
- the female fastening elements are loops, loops, pulled or scraped meshes or else a nonwoven comprising bicomponent fibers.
- said hook-and-loop material (lb) is the male part of a hook-and-loop system and more particularly the hooking elements are of the mushroom type.
- said hook-and-loop material (lb) has a permeability to water vapor greater than 1 gm- 2 / 24h.
- the invention also relates to the use of a hook-and-loop support (A) for manufacturing an applied hook-and-loop abrasive product according to a usual method of transforming an abrasive support into said abrasive.
- A hook-and-loop support
- the invention also relates to the method of manufacturing the self-gripping applied abrasive obtained with the support (A).
- the method of manufacturing a self-gripping applied abrasive product is characterized in that it comprises the following steps:
- the support (1) which is a paper is produced by forming, on a paper machine, a sheet from an aqueous suspension comprising optionally vulcanized cellulose fibers and / or synthetic fibers, at least one mass bonding and possibly conventional stationery additives, then the sheet obtained is dried,
- the hook-and-loop support (A) is transformed into an abrasive, in particular by: applying a thermosetting layer (2) to the free face of the support (1),
- thermosetting overcoating layer (4)
- step b) firstly a moisture-crosslinkable adhesive is applied, in particular a polyurethane, at a rate of 4 to 15 g / m 2 by dry weight, preferably between approximately 6 and 8 g. / m 2 , using a nozzle making it possible to deposit a discontinuous adhesive matrix and on the other hand the self-gripping suuport (A) is left to crosslink for a few days, approximately up to 8 days.
- a moisture-crosslinkable adhesive is applied, in particular a polyurethane, at a rate of 4 to 15 g / m 2 by dry weight, preferably between approximately 6 and 8 g. / m 2 , using a nozzle making it possible to deposit a discontinuous adhesive matrix and on the other hand the self-gripping suuport (A) is left to crosslink for a few days, approximately up to 8 days.
- the process for manufacturing a self-gripping applied abrasive product is characterized in that it comprises the following steps:
- the support (1) which is a paper is produced by forming, on a paper machine, a sheet from an aqueous suspension comprising optionally vulcanized cellulose fibers and / or synthetic fibers, at least one mass bonding and possibly conventional stationery additives, then the sheet obtained is dried,
- thermosetting layer (2) to the free face of the support (1)
- thermosetting overcoating layer (4)
- an adhesive is applied in an aqueous medium at a rate of 4 to 15 g / m 2 by dry weight, preferably between approximately 6 and 8 g / m 2 , using 'A rotogravure type coater with a screened cylinder for depositing a discontinuous adhesive matrix and on the other hand, the hook-and-loop support (A) is dried before possibly winding it.
- the support (1) which is a paper is produced.
- the paper On a flat table paper machine, the paper is made as follows: A suspension of refined cellulose fibers is prepared at 37 ° SR in an aqueous medium, to which a sizing agent such as rosin fixed by aluminum sulphate is added in mass.
- the sheet obtained is dried.
- the grammage of the finished paper is 120 g / m 2 .
- the backing paper (1) is laminated with a hook-and-loop fabric (lb) made of polyamide, knitted in jersey, and having as hooked elements scraped stitches, using an adhesive (la) in the manner following: We deposit a polyurethane adhesive crosslinkable to humidity (adhesive la) on the side of the hook-and-loop fabric opposite to that comprising the drawn stitches, at a rate of 7 g / m 2 by dry weight using a nozzle allowing a discontinuous hot glue deposit, between 90 and 140 ° C, in the form of oblong droplets.
- the glue zones are between 0.5 and 1 mm wide and the glue-free zones, between two glue zones, are of the order of 1 mm.
- the polyurethane adhesive that can be used has a THERMOSELL DGA viscosity at 2920 rpm at 130 ° C between 5000 and 50,000 mPa.s, according to standard ASTM 3236.
- An abrasive product is produced from the support (A) previously produced.
- the support is coated, using a roller coater, with a conventional aqueous sizing composition, comprising a thermosetting urea-formaldehyde resin and as filler of calcium carbonate.
- a conventional aqueous sizing composition comprising a thermosetting urea-formaldehyde resin and as filler of calcium carbonate.
- the total solid content of this composition is 58%.
- Water is added to adjust the viscosity to 2.5 Pa.s (2500 cps) at 25 ° C.
- the quantity deposited is 17 g / m 2 by dry weight.
- electrostatic grains (3) of conventional aluminum oxide are deposited (electrostatics P220).
- the quantity deposited is 98 g / m 2 by dry weight.
- the paper thus coated is dried in a festoon oven at a temperature gradient between 60 and 80 ° C, for 15 minutes, in order to dry the paper and partially crosslink the resin of (2).
- an overgluing composition (4) based on a phenol-formaldehyde resin produced in the same way as (2) is applied to this coated paper, but it has a viscosity of 1 Pa.s (1000 cps) at 25 ° C; the total solid content of this composition is 54%.
- the quantity of resin (4) deposited is 30 g / m 2 by dry weight.
- the paper thus coated is again dried in a festoon oven according to a temperature gradient between 70 and 120 ° C, for 45 minutes, in order to dry the paper and partially crosslink the resin (4).
- the sheet is wound in a jumbo reel.
- This jumbo coil is subjected to 120 ° C for four hours, in order to complete the thermosetting of the layers (2) and (4) at the desired hardness.
- the relative humidity of the product is then 0.5%.
- the product is repackaged for a few hours, together with a flexing step, by spraying it with water so that it reabsorbs 7 g of water per square meter.
- the jumbo coil thus obtained is cut into Velcro discs for sander fitted with a complementary Velcro receiver.
- the discs obtained are flat and homogeneous.
- a hook-and-loop support is produced by laminating the paper support (1) of example 1 with an adhesive layer using an adhesive-grip material similar to that of example 1 but of heavier grammage, here of 65 g / m 2. 2 .
- the adhesive layer deposited by extrusion of an ethylene-vinyl acetate copolymer on one of the faces of the paper continuously is at a rate of 35 g / m 2 .
- the Velcro material is applied to the adhesive layer so as to drown the base of the attachment elements to have good adhesion while leaving said elements free for attachment.
- the Velcro material used here has a higher grammage than that of Example 1, because if it were as light and thin as in Example 1, the material would be completely buried in the layer of adhesive.
- the support obtained is transformed into an abrasive applied in a similar manner to example 1.
- problems of bubbling are observed which form blisters in the support, in particular on the edges of the width, during drying in the second festoon oven.
- repackaging is difficult, not homogeneous, even after three weeks.
- the discs cut from this abrasive sheet have non-flat areas due to the heterogeneity of the reconditioning.
- the Velcro materials used in the examples have the same permeability and which is 24 gm- 2 / 24h.
- Table 2 shows the speed of wet reconditioning of the supports (A), the transformation of which into an abrasive product applied at the moisture exchange level has been simulated.
- This adhesive tape, polyester base is impermeable to water vapor and water, and therefore simulates the property of impermeability to water vapor and water of the two layers of thermoset resin to hold the grains. abrasives.
- the water exchanges can only be done by the face opposite to the grains, that is to say the one comprising the self-gripping fabric in Example 1 and Comparative Example 2 (or the paper side in the case of basic paper alone).
- each of the two hook-and-loop supports of example 1 and of comparative example 2 as well as the paper support (1) alone are placed in an oven at 105 ° C. for 2 hours, in order to evaporate. most of the water in the paper. Then, the samples are taken out of the oven and the adhesive tape is applied to each side on the face intended to receive the sizes and the grains, and the complexes obtained are dried again in the oven at 105 ° C. for 12 hours. The complexes thus dried are then removed from the oven and immediately weighed, then placed in a room conditioned at 23 ° C and 50% relative humidity, then weighed at regular time intervals to see the evolution of the recovery of humidity.
- the moisture recovery of the Velcro materials was also determined, the maximum recovery is quickly reached after 5 minutes. It is 1.3 g / m 2 for the material used in Example 1 and 1.9 g / m 2 for that used in Comparative Example 2.
- Table 2 the evolution of the moisture uptake brought back to the base support (1) by deducting the respective uptake of moisture from the hook-and-loop materials, the values being expressed in g / m 2 .
- this procedure was also applied to the base paper alone, by applying the adhesive strip to it on an entire face, drying the complex for 2 hours at 105 ° C., by applying a second adhesive strip on the entire second face, drying this new complex for 12 hours, weighing this new complex immediately, then measuring as described above its moisture uptake in a room conditioned at 23 ° C and 50% RH.
- the hook-and-loop support (A) of example (1) according to the invention has a kinetics of moisture uptake quickly close to that of the adhesive support (1) on one side, therefore close to that of a usual paper support for abrasive (not self-gripping). Therefore a support (A) according to the invention will be suitable for transformation into an abrasive product according to a usual process.
- the hook-and-loop support according to the prior art of Comparative Example 2 has very slow kinetics of moisture uptake.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quality & Reliability (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02704824A EP1361936A1 (fr) | 2001-02-14 | 2002-02-14 | Support autoagrippant pour un produit abrasif applique et procede de fabrication dudit produit |
CA002437584A CA2437584A1 (fr) | 2001-02-14 | 2002-02-14 | Support autoagrippant pour un produit abrasif applique et procede de fabrication dudit produit abrasif l'incorporant |
AU2002238636A AU2002238636A1 (en) | 2001-02-14 | 2002-02-14 | Self-adhering support for an applied abrasive product and method for making said abrasive product incorporating same |
US10/467,791 US20040109978A1 (en) | 2001-02-14 | 2002-02-14 | Self-adhering support for an applied abrasive product and method for making said abrasive product incorporating same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0102006A FR2820666B1 (fr) | 2001-02-14 | 2001-02-14 | Support autoagrippant pour un produit abrasif applique et procede de fabrication dudit produit abrasif l'incorporant |
FR01/02006 | 2001-02-14 |
Publications (2)
Publication Number | Publication Date |
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WO2002064317A1 true WO2002064317A1 (fr) | 2002-08-22 |
WO2002064317A8 WO2002064317A8 (fr) | 2003-02-13 |
Family
ID=8860004
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2002/000558 WO2002064317A1 (fr) | 2001-02-14 | 2002-02-14 | Support autoagrippant pour un produit abrasif applique et procede de fabrication dudit produit abrasif l'incorporant |
Country Status (6)
Country | Link |
---|---|
US (1) | US20040109978A1 (fr) |
EP (1) | EP1361936A1 (fr) |
AU (1) | AU2002238636A1 (fr) |
CA (1) | CA2437584A1 (fr) |
FR (1) | FR2820666B1 (fr) |
WO (1) | WO2002064317A1 (fr) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7428863B2 (en) * | 2004-06-15 | 2008-09-30 | Vanmark Corporation | Apparatus for peeling potatoes and the like |
US20060019579A1 (en) * | 2004-07-26 | 2006-01-26 | Braunschweig Ehrich J | Non-loading abrasive article |
CN101115584B (zh) * | 2004-12-30 | 2012-04-04 | 3M创新有限公司 | 磨料制品及其制造方法 |
US7258705B2 (en) * | 2005-08-05 | 2007-08-21 | 3M Innovative Properties Company | Abrasive article and methods of making same |
US7252694B2 (en) * | 2005-08-05 | 2007-08-07 | 3M Innovative Properties Company | Abrasive article and methods of making same |
US7393269B2 (en) * | 2005-09-16 | 2008-07-01 | 3M Innovative Properties Company | Abrasive filter assembly and methods of making same |
US7244170B2 (en) * | 2005-09-16 | 2007-07-17 | 3M Innovative Properties Co. | Abrasive article and methods of making same |
US7390244B2 (en) * | 2005-09-16 | 2008-06-24 | 3M Innovative Properties Company | Abrasive article mounting assembly and methods of making same |
WO2008027714A1 (fr) * | 2006-08-30 | 2008-03-06 | 3M Innovative Properties Company | article abrasif de durée de vie étendue et son procédé |
US20100184363A1 (en) * | 2006-09-11 | 2010-07-22 | 3M Innovative Properties Company | Abrasive articles having mechanical fasteners |
JP2008087082A (ja) * | 2006-09-29 | 2008-04-17 | Three M Innovative Properties Co | 吸塵用研磨具 |
US7452265B2 (en) * | 2006-12-21 | 2008-11-18 | 3M Innovative Properties Company | Abrasive article and methods of making same |
US7628829B2 (en) * | 2007-03-20 | 2009-12-08 | 3M Innovative Properties Company | Abrasive article and method of making and using the same |
US20080233850A1 (en) * | 2007-03-20 | 2008-09-25 | 3M Innovative Properties Company | Abrasive article and method of making and using the same |
ITFI20120012A1 (it) * | 2012-01-20 | 2013-07-21 | Corcos S R L | Platorello per carteggiatura |
CN102699828A (zh) * | 2012-06-26 | 2012-10-03 | 谢泽 | 一种基于抓绒布的工业砂布 |
CN102699830A (zh) * | 2012-06-26 | 2012-10-03 | 谢泽 | 一种基于无纺布的柔软工业砂带的制造方法 |
CN102699831A (zh) * | 2012-06-26 | 2012-10-03 | 谢泽 | 一种基于无纺布的工业砂带 |
CN102699836A (zh) * | 2012-06-26 | 2012-10-03 | 谢泽 | 一种基于抓绒布工业砂布的生产方法 |
CN103084990B (zh) * | 2012-11-13 | 2015-04-15 | 谢泽 | 一种用于机磨的含绒面的抛光砂布 |
CN103111952B (zh) * | 2012-11-13 | 2015-08-05 | 谢泽 | 一种用于机磨的含绒面的基于麻布的抛光砂布的制作方法 |
CN103111958A (zh) * | 2012-11-13 | 2013-05-22 | 谢泽 | 一种用于机磨的含绒抛光砂布的制作方法 |
CN103111961A (zh) * | 2012-11-13 | 2013-05-22 | 谢泽 | 一种基于抓绒布与纸复合后生产工业砂布的方法 |
WO2018081546A1 (fr) * | 2016-10-29 | 2018-05-03 | Saint-Gobain Abrasives, Inc. | Abrasifs revêtus comportant un mélange de particules abrasives et présentant une résistance à la déchirure accrue |
CN106926115B (zh) * | 2017-03-15 | 2022-12-09 | 东莞华晶粉末冶金有限公司 | 一种研磨垫及其制作方法 |
DE102018220672A1 (de) * | 2018-11-30 | 2020-06-04 | Robert Bosch Gmbh | Verfahren zur Behandlung eines Schleifartikels sowie Schleifartikel |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995017302A1 (fr) * | 1993-12-22 | 1995-06-29 | Kimberly-Clark Corporation | Procede de fabrication d'un lamine protecteur |
WO1999065352A1 (fr) * | 1998-06-19 | 1999-12-23 | Kimberly-Clark Worldwide, Inc. | Substrat a bouclettes pour materiau en feuille abrasif amovible |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8802933D0 (en) * | 1988-02-09 | 1988-03-09 | Porvair Ltd | Porelle/stretchable fabric composite & socks therefrom |
-
2001
- 2001-02-14 FR FR0102006A patent/FR2820666B1/fr not_active Expired - Fee Related
-
2002
- 2002-02-14 CA CA002437584A patent/CA2437584A1/fr not_active Abandoned
- 2002-02-14 AU AU2002238636A patent/AU2002238636A1/en not_active Abandoned
- 2002-02-14 WO PCT/FR2002/000558 patent/WO2002064317A1/fr not_active Application Discontinuation
- 2002-02-14 US US10/467,791 patent/US20040109978A1/en not_active Abandoned
- 2002-02-14 EP EP02704824A patent/EP1361936A1/fr not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995017302A1 (fr) * | 1993-12-22 | 1995-06-29 | Kimberly-Clark Corporation | Procede de fabrication d'un lamine protecteur |
WO1999065352A1 (fr) * | 1998-06-19 | 1999-12-23 | Kimberly-Clark Worldwide, Inc. | Substrat a bouclettes pour materiau en feuille abrasif amovible |
Non-Patent Citations (1)
Title |
---|
HUERTEN J ET AL: "LAMINIERUNG VON SYMPATEX MEMBRANEN (TEIL 2)", ADHASION KLEBEN UND DICHTEN, GWV FACHVERLAG GMBH, WIESBADEN, DE, vol. 41, no. 3, 1997, pages 34 - 37, XP000720763, ISSN: 0943-1454 * |
Also Published As
Publication number | Publication date |
---|---|
FR2820666A1 (fr) | 2002-08-16 |
CA2437584A1 (fr) | 2002-08-22 |
FR2820666B1 (fr) | 2003-04-11 |
WO2002064317A8 (fr) | 2003-02-13 |
EP1361936A1 (fr) | 2003-11-19 |
AU2002238636A1 (en) | 2002-08-28 |
US20040109978A1 (en) | 2004-06-10 |
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