EP1814711A1 - Coupe-bise a balai renforce - Google Patents

Coupe-bise a balai renforce

Info

Publication number
EP1814711A1
EP1814711A1 EP05824281A EP05824281A EP1814711A1 EP 1814711 A1 EP1814711 A1 EP 1814711A1 EP 05824281 A EP05824281 A EP 05824281A EP 05824281 A EP05824281 A EP 05824281A EP 1814711 A1 EP1814711 A1 EP 1814711A1
Authority
EP
European Patent Office
Prior art keywords
pile
backing
weather stripping
yarns
fin
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.)
Withdrawn
Application number
EP05824281A
Other languages
German (de)
English (en)
Inventor
Ian Schlegel Systems Inc. PAWSON
Mark D. Schlegel Systems Inc. FOSTER
Vincent Outters
Tom Sesock
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schlegel Systems Inc
Original Assignee
Schlegel Systems Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from GB0424547A external-priority patent/GB0424547D0/en
Application filed by Schlegel Systems Inc filed Critical Schlegel Systems Inc
Publication of EP1814711A1 publication Critical patent/EP1814711A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/154—Coating solid articles, i.e. non-hollow articles
    • B29C48/155—Partial coating thereof
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/04—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by at least one layer folded at the edge, e.g. over another layer ; characterised by at least one layer enveloping or enclosing a material
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/263—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer having non-uniform thickness
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/026—Knitted fabric
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/10—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer reinforced with filaments
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/12—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by the relative arrangement of fibres or filaments of different layers, e.g. the fibres or filaments being parallel or perpendicular to each other
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/06—Interconnection of layers permitting easy separation
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B7/00—Special arrangements or measures in connection with doors or windows
    • E06B7/16—Sealing arrangements on wings or parts co-operating with the wings
    • E06B7/22—Sealing arrangements on wings or parts co-operating with the wings by means of elastic edgings, e.g. elastic rubber tubes; by means of resilient edgings, e.g. felt or plush strips, resilient metal strips
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/69—General aspects of joining filaments 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/765—Articles provided with piles, e g. nap on cloth
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/44—Number of layers variable across the laminate
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0223—Vinyl resin fibres
    • B32B2262/0238—Vinyl halide, e.g. PVC, PVDC, PVF, PVDF
    • 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
    • B32B2307/712—Weather resistant
    • 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
    • B32B2571/00—Protective equipment

Definitions

  • the present invention relates to pile weather stripping and methods of making the same.
  • the invention also includes machinery for forming such weather stripping, and a method for making such weather stripping.
  • Pile weather stripping has been, and still is applied around windows, screens and doors. Typically such stripping is manufactured in large quantities in continuous lengths for this purpose.
  • the typical standard for weather stripping is a flat backing with a woven pile material extending from the backing. This weather stripping is typically inserted into a T-shaped slot around the window, screen or door.
  • An object of the present invention is to provide an improved pile weather strip seal and method of making the same.
  • An advantage of the pile weather strip according to the present invention is that it can be recyclable.
  • An advantage of the present invention is that the method can be more economic and efficient at higher speeds.
  • a further advantage of the method is that it can allow for wider variations of backing profiles, pile heights and better quality.
  • the present invention includes a method of forming a weather stripping, comprising: guiding one or more strips of pile into an extruder, and forming a backing on the pile by extrusion.
  • the method can be used to make a weather stripping comprising pile extending from a ⁇ acking, the pile comprising pile yarns, the extruded backing being bonded to the pile.
  • a synthetic fibre can be interlaced with the pile yarns, and the backing then traps at least a part of the synthetic fibre in the backing.
  • a pile weather stripping uses a pile having first fibres and second fibres and an elongate backing, e.g. a polymeric or resin backing that is formed, e.g. extruded around the pile and including the second fibres.
  • the backing will typically be made of PVC or a replacement therefor.
  • Embodiments of the present invention can be used, for example, in windows, such as PVC windows so that the combination of pile weather stripping and PVC F" C T / U SO B . •' ⁇ -I » O 3 ! 9 O window extrusion sections can be recycled without subsequently separating them.
  • the weather stripping may also be used in doors or insect screens.
  • the product is made using a first fibre or thread such as a polymeric fibre or thread which is used as a pile.
  • Second fibres are located around or interlaced, interwoven, etc. e.g. by weaving or knitting, with first pile fibres, e.g. pile threads or yams.
  • the second fibres extend in a direction substantially perpendicular to the longitudinal direction of the pile yarns.
  • a polymeric backing such as a PVC backing which encapsulates at least a part of the second fibre or thread and bonds thereto.
  • the backing may be an extruded profile, e.g. having a cross-section that may clip into or slide into a recess in a window frame, door or screen.
  • the backing is extruded over an end of the pile yarns to thereby encapsulate at least a part of the second fibre or thread while leaving the other end of the pile threads or yarns free.
  • the backing or base can be a foamed resin.
  • the backing may be a thermoplastic polymer or a thermoplastic elastomer. If required the backing can be cross-linked. Any suitable pile can be used, e.g. woven, non-woven such as knitted or wound.
  • the backing can be shaped for insertion into a retaining slot, e.g. a T-shaped slot, especially for windows and doors. Even lengths of filaments, e.g. woven or non- woven filaments such as knitted or wound filaments are secured along the sides of the backing and/or in the backing itself by allowing a polymer or resin to surround the pile.
  • the present invention has the advantage of giving exceptional adhesion between the pile and the backing.
  • One or more fins can be added by inserting the one or more fins into the pile or the one or more fins can be extruded as part of the process to give additional insulating abilities.
  • the fins may be made of the same material as the backing or may be a different material.
  • the fins may be made of a polymer or resin, e.g. preferably PVC but if the backing is made of a poly olefin then the fin can be made of the same material, e.g. such as polypropylene or a mixture of polypropylene and polyethylene.
  • a further advantage of the method of making the pile weather stripping according to the present invention is that it allows flexibility in fabrication parameters, e.g. varying the pile height, the pile density and backing configuration to include throat width, slot width e.g. T-slot width, slot backing depth, e.g. T-slot backing depth and varying fin heights.
  • the present invention also includes machinery for forming such weather P CT/ USOS . ⁇ • ' 4-03 ⁇ 0 , . stripping, as well as a method for making such weather stripping.
  • the pile can be made of polymeric yarns or threads, e.g. a polyolefin pile yarn such polypropylene pile yarns or any other synthetic fibre.
  • a polyolefin pile yarn such polypropylene pile yarns or any other 5 synthetic fibre combined with PVC warp- or PVC coated warp/backing yarns in a knitting or weaving process.
  • the yarns may be made from different polymeric material than the backing. It is advantageous to coat the pile yarns with a layer of a material which bonds to the backing material, or to coat with the same material as the backing material.
  • PVC coated warp yarns are mechanically connected to a PVC backing. These PVC coated warp yarns are located around or are interlaced or interwoven with the pile yarns, e.g. they are knitted or woven into pile yarns, e.g. polypropylene or other synthetic yarns.
  • This combination is then bonded to a polymeric backing such as a PVC extrusion thereby effecting a bond between the polypropylene or other synthetic yarn and the polymeric backing, e.g. PVC extrusion.
  • Ends of the yarns may be singed, pre-coated or a combined process may be used of singing and pre-coating to secure the pile yarns together and to improve the bonding of the knitted or woven interlaced first fibre, e.g. PVC yarn with the backing, e.g. with the extruded profile.
  • the polymer materials used for the backing e.g. PVC resins, preferably provide the necessary stiffness and rigidity to be able to insert the finished profile into a frame such as a door or window frame both inline during the PVC window/door profile extrusion or offline in PVC extruded profiles. This avoids the use of metal reinforcing materials which may make recycling difficult.
  • the singing process runs normally at 470 0 F and the extrusion - coating process at 320-350 °F. Those temperatures however are only indicative and may vary depending on the yarns and resins used.
  • Product according to embodiments of the present invention can be used in PVC extrusions so that the scrap can be recycled, e.g. reuse of the total product recuperated without removing the pile weather strip first.
  • FIG. 1 is a drawing of the weather stripping showing the knitted pile with an extruded backing in accordance with an embodiment of the present invention.
  • FIG. 2 is a drawing of the weather stripping showing the knitted pile separate from the backing.
  • FIG. 3 is a drawing of the weather stripping showing the knitted pile allowed to bloom in accordance with an embodiment of the present invention.
  • FIG. 4 is a drawing of the weather stripping showing the knitted pile with an extruded backing in accordance with an embodiment of the present invention.
  • FIG. 5 is a drawing of the weather stripping showing the knitted pile with a center fin in accordance with an embodiment of the present invention.
  • FIG. 6 is a drawing of the weather stripping showing the knitted pile with an outside fin in accordance with an embodiment of the present invention.
  • FIG. 7 is a drawing of the weather stripping showing the knitted pile with two outside fins and a center fin in accordance with an embodiment of the present invention.
  • FIG. 8 is a drawing of the weather stripping showing an extruded scored backing to act as a living hinge in accordance with an embodiment of the present invention.
  • FIG. 9 is a drawing of the weather stripping showing an extruded V-backing in accordance with an embodiment of the present invention.
  • FIG. 10 is a schematic cross-section of a weather stripping in accordance with the present invention.
  • FIG. 11 is a schematic representation of machinery for a process according to an embodiment of the present invention in accordance with an embodiment of the present invention.
  • the weather stripping according to the present invention may be for use in a retaining slot, e.g. a T- slot into which the weather stripping is inserted with an interference fit.
  • FIG. 1 shows an embodiment of the present invention. It comprises a backing 1 which encapsulates the ends of pile yarns 2.
  • the pile yarns 2 can be woven or non- woven pile yarns such as knitted yarns.
  • the pile yarns are held together or supported P Z; TV" IJ S G S Z H G 39 O by at least one synthetic yarn 3.
  • the synthetic yarn 3 can be located around or interlaced or interwoven into the pile yams 2, e.g. by knitting or weaving. Whereas the pile yarns are shown extending substantially vertically on the page, the synthetic yarns extend substantially perpendicular to this direction.
  • the synthetic yarn 3 is preferably coated with or comprises a polymer material which bonds well to the polymeric material of backing 1. For example, when the backing is PVC, then the synthetic yarn 3 can be PVC yarn or PVC coated synthetic yarn.
  • One or more additional or optional synthetic warp ends 4, 5 may be used to restrain or control the pile threads, e.g. they may laid around or be woven or knitted into the pile yarns 2.
  • These additional or optional threads can be made of any suitable material, e.g. textile, synthetic or natural threads.
  • FIG. 2 shows the secured pile yarns 2 before being fixed or bonded to the backing 1.
  • FIGS. 4 to 10 show various designs of weather stripping which can be used with the present invention.
  • the weather stripping comprises an elongate backing and pile threads or filaments extending therefrom at any suitable angle.
  • the pile threads have further fibres which are interlaced with the pile threads.
  • the interlaced fibres are at least partly trapped in the backing in the final product.
  • the interlaced fibres preferably bond well to the backing in the final product
  • extruding a continuous length of polymer or resin forms a profiled backing of the weather stripping as shown in all of FIGS. 4 to 10.
  • the polymer or resin is allowed to flow in a plastic or molten state around the pile with the interlaced fibres giving exceptional bonding between the pile and backing.
  • a preferred resin or polymer is PVC. Less preferred is a polyolefin resin, e.g. polypropylene or a blend of polypropylene and polyethylene.
  • the backing may be of a foamed material. The backing may be cross-linked.
  • the pile is introduced using guides to a singing bar that heats and P C T .. ⁇ •" IJ S O 5.
  • ⁇ ' H- O 3 m 3 pre-melts the pile directly before it is introduced to the extrusion die where the resin is allowed to flow around the pile as illustrated in FIG. 11. The pre-melting is done on the ends of the filaments on one side of the pile strip.
  • the pile Before forming into a strip of pile for entry into the die, the pile is formed woven or non-woven, e.g. knitted and then slit or cropped to the correct pile height or may be wound as described in US 4,024,004 which is incorporated herein by reference.
  • the pile may be formed of monofilaments or multifilaments, e.g. threads or yarns, of any suitable material, preferably thermoplastic material, e.g. polymeric filaments.
  • one or more fins e.g. made of a polymeric material such as a polyolefin, e.g. polypropylene or a blend of polypropylene and polyethylene, can be included within the pile.
  • a fin can further enhance the insulating quality of the weather stripping.
  • a fin maybe located within the pile and/or at the side of the pile.
  • the fin or fins extend in the same direction as the filaments of the pile from the backing.
  • the fin or fins can be the same length as the pile, i.e. is coterminous with the filaments or maybe be a different length.
  • the strand of pile is divided into N, N-I or N+l strips and these separate strips of pile are run simultaneously into the extrusion die where the fin or fins can be co- extruded along with the backing.
  • the N, N-I, or N+l strips of pile can be optionally sent through a singing bar before entry into the extruder.
  • the fin or fins can be added to the N, N-I or N +1 pile strips as a secondary operation and then the combination fed to the extruder die.
  • the fins or fin can be added into the pile by ploughing.
  • the N fins can be attached to the pile, e.g. by a mechanical or thermal process such as ultrasonically welding or laser welding the fin or fins into place.
  • Sources of one or more pile strips are provided, e.g. reels or drums and the one or more strips are lead towards an extruder die for co-extrusion with polymer from the extruder.
  • a singer may be provided for singing the pile before it enters the extruder die.
  • one or more pile strips Ii , ⁇ ⁇ OJ O ::p , - rti'.'ui . ⁇ "! ⁇ " ? « , perhaps are fed towards a joining device and one or more fins are inserted into the pile.
  • the combination is temporarily bonded in the joining device before the combination is fed to the extruder die.
  • the joining device can be a mechanical or thermal joining device, e.g. an ultrasonic welder or laser welder.
  • the inventive weather stripping allows for the creation of different backing configurations as shown in FIGS. 1, 3, 8 and 9. The creation of these different backings is based on the profile that is cut into the extrusion die itself along with melt temperatures and material draw downs used in the extruder.
  • the inventive pile weather stripping allows for the fabrication of any pile height, pile density and backing configuration to include throat width, T-slot width, T-slot backing depth and varying fin heights (see Fig. 10).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Textile Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention porte sur un nouveau procédé de fabrication d'un coupe-bise à balai selon lequel on utilise un balai en non-tissé, p.ex. un tricot, que l'on tronque ou que l'on fend à la hauteur de balai correcte. On introduit alors le balai avec précision dans un dispositif à flamber au moyen de guides. Après le processus de flambage, on guide le balai en tricot dans une tête d'extrudeuse où la base est extrudée autour du tricot. On règle la densité du coupe-bise à balai en tricot en ajoutant ou en supprimant des fils ou des trames de remplissage, et en modifiant les deniers des fils. L'épaisseur et la configuration de la base est une fonction directe de la tête d'extrusion. On peut ajouter une ou des ailettes de balai sous la forme d'une matière première achetée ou extrudée dans le cadre du processus. Le coupe-bise de l'invention permet de fabriquer des coupe-bise de n'importe quelle hauteur, densité de balai et configuration de renfort, permettant de varier la largeur de la gorge, la largeur de la fente en T, la profondeur de la base de la fente en T et les hauteurs des ailettes. Le procédé peut être utilisé pour fabriquer un coupe-bise comprenant un balai qui s'étend depuis un renfort, le balai comprenant des fils poils, le renfort étant lié au balai, une fibre synthétique étant entrelacée avec les fils poils, et une partie de la fibre synthétique au moins étant maintenue à l'intérieur du renfort.
EP05824281A 2004-11-08 2005-11-08 Coupe-bise a balai renforce Withdrawn EP1814711A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0424547A GB0424547D0 (en) 2004-11-08 2004-11-08 Weather stripping comprising a pile with extruded base
US65743205P 2005-03-02 2005-03-02
PCT/US2005/040390 WO2006052948A1 (fr) 2004-11-08 2005-11-08 Coupe-bise a balai renforce

Publications (1)

Publication Number Publication Date
EP1814711A1 true EP1814711A1 (fr) 2007-08-08

Family

ID=36336832

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05824281A Withdrawn EP1814711A1 (fr) 2004-11-08 2005-11-08 Coupe-bise a balai renforce

Country Status (2)

Country Link
EP (1) EP1814711A1 (fr)
WO (1) WO2006052948A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4024004A (en) * 1974-12-26 1977-05-17 Schlegel Corporation Method of making pile weatherstripping
US4078106A (en) * 1975-07-21 1978-03-07 Schlegel Corporation Pile weatherseal enclosed in U-shaped tube
US4419315A (en) * 1981-12-23 1983-12-06 Gerald Kessler Extruded fin-type weatherstrip
US5093181A (en) * 1989-12-15 1992-03-03 Schlegel Corporation Low friction self-aligning weatherstripping

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006052948A1 *

Also Published As

Publication number Publication date
WO2006052948A1 (fr) 2006-05-18

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