Classifications

• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04B—KNITTING
  • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
  • D04B21/14—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes
  • D04B21/145—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes with stitches drawn from loose fibres, e.g. web-knitted fabrics
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04B—KNITTING
  • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
  • D04B21/14—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes
  • D04B21/16—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes incorporating synthetic threads
  • D04B21/165—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes incorporating synthetic threads with yarns stitched through one or more layers or tows, e.g. stitch-bonded fabrics

Definitions

• the invention describes a self-adhesive product based on a textile Fabric for masking.
• Applications for masking are preferred Surfaces that are treated, finished, finished or coated should.
• Self-adhesive masking tapes are used to equip areas that are not treated, to be refined or coated to protect. After treatment, finishing, Refinement and / or coating can be removed from these tapes. In particular when coating with a paint, this can be before or after the physical or chemical hardness. Advantageous materials have a certain Resistance to the product to be rejected. Furthermore, they are also internal towards the substrate.
• masking tapes for painting and varnishing work are residue-free self-adhesive products to be removed preferred.
• a recording or at least a good one Adhesion of the paint products to the masking tape is necessary.
• these products from thin papers, foils or films, which by appropriate Equipment steps are adapted to the requirements.
• Products in various designs and are commercially available as Crepe, or tesaflex available are Products in various designs and are commercially available as Crepe, or tesaflex available.
• the disadvantage of film-based products is the insufficiently high level Stability in different masking applications, in some cases the paint adhesion insufficient.
• Paper supports are advantageous when taking up lacquer, but they have one less stability, when wet. This comes especially when using aqueous paint systems or when sanding in an aqueous medium.
• EP 0365 510 discloses an elongated, compressible and bendable foam pad, the Resists surface treatment, for covering surfaces to be treated, serves in particular as a cover as a rear fog protection during painting work.
• G 93 02 930.6 and EP 0613934 describe a masking tape, in particular for Painting work in the area of sealing elements for window frames and Body attachments on motor vehicles.
• Masking tapes made of paper are described or film that is at least on one edge with an adhesive-free, flexible Stiffening element were provided.
• G 91 06 206.3 discloses a masking profile for use in painting work, the profile is formed with two profile legs at an angle. There will be no porters described textile material.
• the object of the invention was to develop a product which o.a. Disadvantages not having.
• the carrier material used to cover substrates advantageously at least 3 / cm, preferably 7 / cm to 50 / cm.
• the maximum traction the carrier material amounts to at least 10 N / cm, preferably 15 to 450 N / cm, particularly preferably 200 to 250 N / cm, and the carrier material is at least on one side partially or fully coated with a self-adhesive.
• a sufficiently high wettability is advantageous for taking up the coating materials.
• Flat structures with a fibrous structure are favored. But also fabrics with large Surface. This is also important for good paint adhesion on the fabric.
• the addition of auxiliary substances can have a supporting effect.
• the fabric can also be pretreated, especially one Irradiation, or discharge (e.g. corona) or flame treatment can be application-related be used.
• the subject matter of the invention consists of oriented or unoriented Individual fibers or filaments, the fibers having good adhesion to one another.
• Spunbond or filament nonwovens have been shown to be advantageous.
• Execution of the subject matter of the invention is the subject by mechanical or areodynamic, hydrodynamic or thermodynamic processes or their combination won.
• Dry fleece, wet fleece or spun fleece or are preferred Laminates from the combination of the mentioned types of fleece.
• Particularly preferred as the core are voluminous nonwovens made from spun polymer fibers. The manufacture of such fleeces is by swirling the polymer melt against an air stream and / or Permanent pivoting movements of the spinning beam are achieved and are state of the art well known.
• laminated and / or laminated structures are for special Applications also wet or dry laid nonwovens as at least as a part cheap.
• the fibers are also used as threads or twists and in Woven or knitted fabrics processed.
• Spacer fabrics or spacer fabrics are advantageous, which are connected by more or less stiff spacer threads and so one have sufficiently high permanent resilience.
• a fleece sewn over with sewing threads is used as three-dimensional shape used for masking surfaces, the Number of seams on the fleece advantageously at least 3 / cm, preferably 5 / cm to 50 / cm.
• the maximum tensile force of the subject of the invention amounts to at least 10 N / cm, preferably 15 to 450 N / cm, particularly preferably 20 to 250 N / cm, the force being related to the width of the subject matter of the invention.
• polymeric fibers can advantageously be used as materials for the sewing threads made of polypropylene, polyester, polyamide, aramid or polyethylene as well as mineral Fibers such as glass fibers or carbon fibers are used. Can continue too Twists or mixed twists, in particular siro mixed twists, can be used. For special Applications can also be mixed fiber threads, yarns or twists.
• the sewing threads can be at least partially colored around the backing material visually more appealing.
• fibers can also be used natural origin such as cotton, silk, flax or rayon can be used.
• the sewing thread can also be elastic for special applications. Regenerated from this then an elastic base support with an elongation of up to 250% under a load of 10 N / cm.
• an elastic base support with an elongation of up to 250% under a load of 10 N / cm.
• a polyamide thread may be mentioned here.
• Such a structure produces an elongation of 20% to 70% Compression force from 0.2 N / cm to 10 N / cm.
• a fleece is used as Carrier material used for masking surfaces.
• the fleece is covered by the Formation of seams formed by stitches from the fibers of the fleece, reinforced, advantageously the number of seams on the fleece at least 3 / cm, preferably 5 / cm to 50 / cm.
• the maximum tensile force of the subject of the invention is at least 10 N / cm, preferably 15 to 450 N / cm, particularly preferably 20 to 250 N / cm, the force being related to the width of the subject matter of the invention.
• two layers of nonwoven are made using at least one Thread solidified.
• the advantage here is the bending stiffness and special elasticity Resilience of the thread the spatial expression
• the subject of the invention is based in particular on known nonwovens which are mechanically consolidated, namely by sewing on with separate threads or by stitching.
• the nonwoven thread sewing fabrics result.
• a nonwoven fabric is presented, which can be cross-paneled, for example, and sewn on with separate threads in fringed or tricot layers.
• a cross-paneled fleece is also preferably used submitted.
• needles are pulled from the fleece itself Fibers and shape them into stitches, creating seams in fringe layers.
• This non-woven fabric is known under the name "Malivlies”, also from the company Malimo, spread.
• the fleeces advantageously have longitudinal seams, the orientation of the sewing threads be aligned according to the stress of the carrier material in use should.
• organic and inorganic fibers on a natural and synthetic basis can be used.
• examples include viscose, cotton, silk, polypropylene, polyester, polyurethane, Polyamide, aramid or polyethylene as well as mineral fibers such as glass fibers or Carbon fibers listed.
• the present invention is not based on the above Materials limited, but there can be a variety of other fibers for fleece formation be used.
• the fibers used to form the fleece preferably have a water retention capacity of more than 0.5%, preferably between 2 to 70%, particularly preferably between 3 and 50%.
• Advantageous material combinations are, for example, sewing threads made of high-strength polymer fibers such as polyamide, polyester, highly stretched polyethylene or mineral fibers such as Glass and non-woven materials such as cotton or rayon.
• the material of the submitted fleece is corresponding The same applies to the sewing stitch.
• the subject matter of the invention has a weight per unit area of less than 12,000 g / m 2 .
• 20 to 500 g / m 2 are preferably used, particularly preferably 30 to 300 g / m 2 .
• the subject of the invention is manual tearable perpendicular to the orientation of the seams and / or in the direction of the seams. This takes place then used when the structure according to the invention is wound on itself in a roll becomes.
• this tearability is not necessary.
• it can are pre-punched structures for masking surfaces.
• the subject of the invention can be reinforced with one or more threads made of monofilament, multifilament, staple fiber yarn or spun fiber yarn and / or with oriented high-strength fibers, the threads and / or fibers in particular having a strength of at least 20 cN / tex. It is also possible to use twisted threads or mixed twisted threads, in particular syringed mixed threads. Mixed fiber threads, yarns or twists can also be used for special applications. This can be, for example, wrapping yarns or special staple fiber wrapping yarns.
• the reinforcing fibers or threads can be made of organic or inorganic Materials consist, for example and preferably, of glass, carbon, polyester or special polyamides, the reinforcing fibers can at least be partially colored to make the subject of the invention more visually appealing. In this way it is easily possible to differentiate the reinforced beams optically. Dyed glass or polymer threads are particularly suitable for this.
• the addition of high-strength fibers or threads with a maximum tensile force of more than 40 cN / tex shows a maximum tensile force of more than 50 N / cm and an elongation of less than 25% with a basis weight of less than 840 g / m 2 .
• the number of threads attached or inserted or high-strength fibers depends primarily from the intended use and the intended Maximum tensile force and maximum tensile force elongation of the subject of the invention, its own Texture and the respective strength of the fibers and threads themselves and can therefore vary within relatively wide limits.
• Advantageous material combinations are, for example, reinforcement threads or fibers high-strength polymer fibers such as polyamide, polyester, highly stretched polyethylene or Mineral fibers such as glass and non-woven materials such as cotton or rayon.
• the reinforcements are preferably targeted according to the Claim direction of the subject of the invention inserted, i.e. longitudinal. she can, however, if this is more appropriate, additionally or only in cross or Oblique direction or, for example, curved, spiral or zigzag or irregular run.
• the carrier material is vertical by hand tearable for orientation of the reinforcement and / or in the direction of the reinforcement.
• polymeric fibers made of polypropylene, Polyester, polyamide, aramid or polyethylene as well as fibers of natural origin such as cotton or cellulose, or their combinations.
• Further processing such as flavoring, laminating, spinning, twisting, sewing, meshing, Weaving and knitting can show advantages for special applications.
• the use of Spacers are also beneficial.
• the fabric can preferably be torn and / or cut transversely by hand. In some cases, a pre-made perforation can be cheap.
• the self-adhesive coating is both by direct coating and by Transfer coating possible.
• an auxiliary carrier such as Release paper, film, roller or webbing first coated and the actual one Fabric is then fed.
• the adhesive Mold carriers applied, for example by screen printing, screen printing, Thermoflexo printing or gravure printing.
• a full-surface coating is also possible. Spinning or spraying can give the product special properties to lend.
• the self-adhesive area is within the top view projection screen.
• a self-adhesive is preferred, which has a high adhesive strength having.
• Self-adhesive compositions can advantageously be used as adhesive compositions Based on natural and synthetic rubbers and other synthetic polymers such as Acrylates, methacrylates, polyurethanes, polyolefins, polyvinyl derivatives, polyesters or silicones with appropriate additives such as adhesive resins, plasticizers, stabilizers and other auxiliaries, such as fillers where necessary.
• Thermoplastic hot melt adhesives in particular have advantageous properties on and are favored for production reasons.
• Preferred hot melt adhesives based on block copolymers stand out through their diverse range of variations, because by the targeted lowering of the Glass transition temperature of the self-adhesive due to the choice of tackifiers, the plasticizer as well as the polymer molecule size and the molecular distribution of the The necessary functional adhesive bonding with the substrate also becomes an insert component guaranteed at critical points of the human musculoskeletal system.
• the high shear strength of the hot melt adhesive is due to the high cohesiveness of the Polymers achieved.
• the good stickiness results from the pallet used Tackifiers and plasticizers.
• the hot melt adhesive is preferably based on Block copolymers, in particular A-B, A-B-A block copolymers or mixtures thereof.
• the hard phase A is primarily polystyrene or its derivatives
• the soft phase B contains ethylene, propylene, butylene, butadiene, isoprene or mixtures thereof, here particularly preferably ethylene and butylene or mixtures thereof.
• the aliphatic or aromatic oils, waxes and resins used as tackifiers are preferred hydrocarbon oils, waxes and resins, the oils such as Paraffinic hydrocarbon oils, or the waxes, such as paraffinic hydrocarbon waxes, have a beneficial effect on skin adhesion due to their consistency.
• the oils such as Paraffinic hydrocarbon oils, or the waxes, such as paraffinic hydrocarbon waxes, have a beneficial effect on skin adhesion due to their consistency.
• the fabric according to the invention has an adhesive force on steel of at least 0.5 N / cm (coating width), especially an adhesive strength between 1.0 N / cm and 25 N / cm, particularly preferably 1.5 to 22 N / cm. On other surfaces, others can Adhesive strengths can be achieved.
• the fabric can be removed without residue after use, even if one thermal load of over 60 ° C was present. Special versions leave one thermal load from 65 ° C to 220 ° C, particularly preferably 68 ° C to 150 ° C, entirely particularly preferably 70 ° C to 120 ° C.
• the fleece coated on one side with adhesive in such a way roll that there is an all-round adhesive hose.
• This hose is due to the Thickness and fluffiness of the fleece so dimensionally stable that the round profile also Pressure load remains and therefore results in a leaking paint edge and not how a streak leads to a hard demarcation.
• the fabric can be detached by stretching.
• the fabric consists of two outer, non-foamed layers of nonwoven fabric, which are given a spatial orientation of 6 mm using a spacer thread.
• the nonwoven webs were sewn over with a polyester thread with a sufficiently high bending stiffness, the number of sewing threads being 22 / cm width.
• the water absorption of the polyester thread was 0.3%.
• the nonwovens were brought together and connected by mechanical and thermal deformation.
• the fabric was then impregnated and equipped on one side with a self-adhesive adhesive.
• a solvent-based natural rubber adhesive was used as the adhesive.
• the mass consists of 45% natural rubber, 40% hydrocarbon resin (trade name: Hercures 5742), 14% inorganic filler based on zinc oxide and 1% anti-aging agent. These substances are brought into solution by the methods customary in the rubber industry.
• Boiling-point petrol 60/95 serves as the solvent, the solids content is 37%.
• the mass is applied in a layer thickness so that a mass application of 40 g / m 2 remains after the gasoline has dried.
• the elongation of the fabric is about 120% at 5 N / cm load.
• the height is compressible by 50%.
• the longitudinal bending stiffness is 20 N x cm 2 .
• a non-woven fabric based on viscose was used as the carrier material.
• the nonwoven was sewn over with a polyester thread, the number of sewing threads being 22 / cm sample width scam.
• the water absorption of the polyester thread was 0.3%.
• the carrier material was calendered and impregnated.
• the carrier material produced in this way had a maximum tensile force of 50 N / cm in the longitudinal direction and a maximum tensile force elongation of 28%.
• the weight per unit area was 120 g / cm 2 . Complete wetting of the backing material was not possible due to the selection of the reinforcement materials
• the carrier material had an air permeability of 100 cm 3 / (cm 2 * s) and water vapor permeability of more than 2500 g / (m 2 * 24h) and could be torn and torn by hand in the transverse and longitudinal directions.
• the hot melt adhesive was applied to the backing using thermal screen printing.
• the hot melt adhesive composition was as follows:
• the components used were homogenized in a thermomixer at 175 ° C.
• the softening point of this adhesive is approx. 95 ° C (DIN 52011) and a viscosity of 2400 mPas at 150 ° C (DIN 53018, Brookfield DV II, column 21)
• Direct coating was carried out at 50 m / min at a temperature of 120 ° C.
• the carrier material was partially coated with 120 g / m 2 in thermal screen printing, a 14 mesh screen template with a screen thickness of 300 ⁇ m being used.

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Laminated Bodies (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

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Citations (4)

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• 1999
  • 1999-11-04 DE DE1999153096 patent/DE19953096A1/de not_active Withdrawn
• 2000
  • 2000-10-23 EP EP00122319A patent/EP1098023A1/fr not_active Withdrawn

Patent Citations (4)

Non-Patent Citations (1)

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