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
  • D04B21/06—Patterned fabrics or articles
• • 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
• • D—TEXTILES; PAPER
  • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B2403/00—Details of fabric structure established in the fabric forming process
  • D10B2403/01—Surface features
  • D10B2403/011—Dissimilar front and back faces
  • D10B2403/0112—One smooth surface, e.g. laminated or coated
• • D—TEXTILES; PAPER
  • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
  • D10B2503/00—Domestic or personal
  • D10B2503/04—Floor or wall coverings; Carpets
• • 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
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/40—Knit fabric [i.e., knit strand or strip material]
• • 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
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/40—Knit fabric [i.e., knit strand or strip material]
  • Y10T442/419—Including strand precoated with other than free metal or alloy
• • 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
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/40—Knit fabric [i.e., knit strand or strip material]
  • Y10T442/45—Knit fabric is characterized by a particular or differential knit pattern other than open knit fabric or a fabric in which the strand denier is specified

Definitions

• the present invention relates to the covering of shaped panels, that is to say panels not necessarily flat and for which the covering must be produced by deforming the covering covering, for example by uses a hot forming technique. It concerns more particularly a coating of this type, having an external appearance textile and good cleanability.
• the purpose of the covering is to aesthetically cover a element that we want to hide.
• the cabin walls are lined with panels with a material which has all the required qualities of sound absorption, for example melamine-formaldehyde foam. These panels marry the interior shape of the cabin and are therefore not planar.
• the covering coating it is necessary to be able to locally deform said coating so as to make it match the external configuration of the panel. It is therefore important that the cladding can be extended in sufficient proportions to adapt to the external forms of the panel.
• the panels for airplane cabins also for any type of shaped panel.
• the goal set by the applicant is to offer a coating for covering shaped panels, which have a good textile appearance and good cleanability.
• the outer face of the knitted fabric has a coating transparent in a non-stick material.
• the particular structure of the knitted fabric gives it a textile look, the opacity and deformability sought; the coating in a material non-stick prevents stains from being absorbed or encrusted on the outer face of the knitted fabric; the transparent nature of the coating allows it has to visually keep its textile appearance.
• the value x in the assembly of the chain loom or Rachel is two.
• This method of knitting provides particularly effective results in concerns deformability.
• knitting obtained on chain or Rachel loom, is with a gauge of the order of 12. This density of wires is capable of bringing knitting very good opacity, allowing to mask as much as to do may be the panel on which is applied the covering coating.
• the outer face of the knitted fabric is coated with a light, transparent and large membrane deformability, carried out in a non-stick material.
• the deformability of the membrane must be at least equivalent to that of knitting so as to that there is no alteration of the coating during the application thereof on the shaped panels to be dressed.
• the membrane should be light to do not recklessly increase the weight of the cladding and modify the visual appearance and possibly the touch thereof.
• the membrane in question is a membrane with polyurethane base which is applied by transfer and bonded to the surface knitting with an adhesive also based on polyurethane.
• This type of membrane gives the covering coating its easy-care qualities since the knitting itself is no longer apparent but is protected by the membrane which on the one hand stains difficult and on the other hand is easily cleaned using the products routine maintenance.
• each wire constituting the knit is sheathed by a transparent outer covering and in a material anti-adherent.
• it is the sheathing of each yarn which constitutes the covering which protects the outer face of the knitted fabric.
• this cladding presents disadvantages and advantages. To achieve an effect equivalent to the outer membrane, it is necessary to sheath each thread which is sufficient and which overall increases much more important the weight of the covering coating. In addition there is not a total barrier preventing the penetration of dirt into the knitted fabric so that there may remain incrustations between the stitches of said knitted fabric, difficult to clean.
• this alternative embodiment presents an undeniable advantage compared to the membrane when looking for a cladding that is acoustically transparent and not reflecting so as not to decrease the absorption efficiency of the shaped panel that he dresses. This is particularly true in the case of covering of noise correction walls, especially for cabin airline.
• the polyurethane membrane which was presented above as the preferred embodiment, also exhibits some acoustic transparency, due to its micro-porosity; however it does remains no less true that the presence of this membrane is a factor to reduce the absorption efficiency of the sound correction panel comprising its covering coating.
• a covering for covering shaped panels comprising a knitted fabric chain or Rachel, coated on its outside with a light membrane and transparent polyurethane.
• the coating of the invention is intended to cover all shaped panel, i.e. any panel with an outer surface is not necessarily flat, the application of the covering coating on the panel being produced in particular by the implementation of a technique of the forming type, in which the covering coating is hot formed to make it match the external shape of the panel to be dressed. From applications targeted by the applicant, we find in particular dressing sound correction panels lining the interior of the cabins airline. This application is of course not exclusive.
• the applicant sought to combine in the same coating on the one hand, very high deformability, up to almost 100% in the weft direction and 85% in the warp direction, on the other hand a marked textile appearance, with good opacity and an apparent relief and finally a very good cleanability.
• the coating proposed by the applicant in its first preferred embodiment, includes a knit obtained on chain or Rachel loom and a membrane which is arranged on the outer face of the knit and which is made of a material non-stick and transparent.
• the knitting is obtained on a four-bar loom with two bottom threads feeding the first pass (I) (Rachel notation) and two appearance threads feeding the second and third pass (II and III) according to the following arrangement: I II III ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ - - - ⁇ ⁇ ⁇ ⁇ 2 ⁇ 2 ⁇ - - - ⁇ ⁇ ⁇ 2 ⁇ ⁇ ⁇ - - - ⁇ ⁇ ⁇ ⁇ ⁇ - - - - ⁇ ⁇ ⁇ ⁇ ⁇ - - - -
• Such a knit meeting the definition above, has an appearance textile exterior, sufficiently opaque to hide surface defects of the panel to be dressed; moreover it has good deformability. Finally if necessary, it has good acoustic transparency, in particular for its application as part of a covering coating for aircraft cabin.
• LFA length of absorbed yarn
• the knitting obtained with threads of 500 dtex and an LFA of 32 cm per 100 stitches was of the order of 250 to 400 g / m 2 , depending on the gauge.
• the selected gauge was 12 and the value of the parameter x in the assembly was 2.
• the membrane placed against the outside of the knitted fabric, that is to say the face which is not intended to be applied against the shaped panel to be dressed, is a transparent, light and in a non-stick material. Due to its transparency, the coating retains its textile exterior appearance; due to its lightness it does not weigh down not prohibitively the weight of the coating, which is a factor important especially when it comes to a cabin trim coating aircraft; because of its composition, it constitutes a screen for dirt, which does not adhere to its surface and which can therefore be easily eliminated.
• the applicant's preferred membrane is a membrane based polyurethane, which is slightly microporous. This membrane meets the aforementioned three criteria and moreover has a capacity elongation in all directions which allows it to follow, without limitation, the deformation of the knit when applying the coating against the shaped panel to be dressed.
• the aforementioned structure of knitting with polychloride yarns vinyl and a microporous polyurethane membrane is particularly suitable for producing a front cladding comply with the fire resistance standards imposed for the covering of panels for commercial aircraft (aeronautical standard FAR 25).
• the deposition of the membrane on the knitted fabric is obtained by transfer technique, using a transfer paper on which the coated membrane has been previously deposited on its outer face, not in contact with transfer paper, adhesive.
• the adhesive is itself an adhesive of the polyurethane type.
• the membrane is applied to the knitted fabric by feeding the transfer paper / membrane / adhesive assembly to a cylinder heating, the knitted fabric being fed between this assembly and said cylinder heating.
• the temperature used, at the level of the heating cylinder is of the order of 100 ° C., which enables the adhesive to be activated and the bonding of it and therefore of the membrane on the face of the knitted fabric, freeing up the transfer paper.
• This transfer technique, with adhesive is preferred especially when the knitting is composed of fibers of the type polyvinyl chloride. We could of course implement other attachment techniques between the membrane and the knit, for example the direct coating technique.
• This particular structure preserves the textile appearance and the particular relief of knitting. Acoustic transparency is certainly improved insofar as the sheathing of each sealing wire does not between the knit stitches. On the other hand, there can therefore be penetration soiling inside the knitting structure and therefore a reduction ease of cleaning.
• non-stick material constituting the coating on the outside of the knitted fabric
• additives intended for improve the desired characteristics, for example additives flame retardants for fire resistance, fluoride additives for ease of cleaning, anti-UV additives for light fastness.
• the membrane is generally waterproof liquids and also, because of its micro porosity, permeable to air.
• the covering covering can, under these conditions, be qualified as breathable. This property can also open the coating of the invention to other applications.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Knitting Of Fabric (AREA)
• Laminated Bodies (AREA)
• Details Of Garments (AREA)
• Decoration Of Textiles (AREA)
• Chemical Or Physical Treatment Of Fibers (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=9503626

Family Applications (1)

Country Status (8)

Families Citing this family (2)

Citations (1)

Family Cites Families (9)

• 1997
  • 1997-02-07 FR FR9701632A patent/FR2759386B1/fr not_active Expired - Fee Related
• 1998
  • 1998-02-06 US US09/355,181 patent/US6258738B1/en not_active Expired - Lifetime
  • 1998-02-06 EP EP98906983A patent/EP0958416B1/fr not_active Expired - Lifetime
  • 1998-02-06 AT AT98906983T patent/ATE220135T1/de active
  • 1998-02-06 AU AU62985/98A patent/AU6298598A/en not_active Abandoned
  • 1998-02-06 WO PCT/FR1998/000219 patent/WO1998035082A1/fr active IP Right Grant
  • 1998-02-06 ES ES98906983T patent/ES2179459T3/es not_active Expired - Lifetime
  • 1998-02-06 DE DE69806340T patent/DE69806340T2/de not_active Expired - Lifetime

Patent Citations (1)

Also Published As

Similar Documents

Legal Events