Classifications

• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46B—BRUSHES
  • A46B9/00—Arrangements of the bristles in the brush body
  • A46B9/08—Supports or guides for bristles
  • A46B9/12—Non-adjustable supports
• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46B—BRUSHES
  • A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
  • A46B3/04—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier by mouldable materials, e.g. metals, cellulose derivatives, plastics
• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46B—BRUSHES
  • A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
  • A46B3/06—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier by welding together bristles made of metal wires or plastic materials
• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46B—BRUSHES
  • A46B9/00—Arrangements of the bristles in the brush body
  • A46B9/06—Arrangement of mixed bristles or tufts of bristles, e.g. wire, fibre, rubber
• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46D—MANUFACTURE OF BRUSHES
  • A46D1/00—Bristles; Selection of materials for bristles
• • A—HUMAN NECESSITIES
  • A46—BRUSHWARE
  • A46D—MANUFACTURE OF BRUSHES
  • A46D3/00—Preparing, i.e. Manufacturing brush bodies

Definitions

• This invention relates to an improved method of manufacturing brushes and to brushes and the brush components made by the improved method.
• we provide a method of manufacturing brush components comprising forming a multi-filament tow from bristle filament. feeding the tow tc a loom as the weft and weaving a bristle fabric using traditional warp yarns and subsequently extruding onto the fabric across the bristle wefts a polymeric material either before or after the material has been slit across the wefts.
• the multi-filament tow is formed from a plurality of synthetic resinous mono-filaments such as polypropylene filaments and the warp yarns are formed from a polyester material.
• the woven material is slit transverse to the wefts and molten plastics material is then extruded onto one or both ends of the severed wefts, the shape of the extrusion being such as to provide a locking bead which can subsequently be located in a groove in a brush head. If the molten material is extruded down both end edges of the severed wefts then a further severing operation between the two extrusions must be performed.
• the slit strip of woven material can be folded upon itself about its central line running transverse to the wefts, thus presenting a double row of weft ends side by side and the material may be held in this doubled over configuration by extruding a bead of polymeric material along the fold line.
• the woven material may have deposited on one or both faces thereof strips of molten polymer at selected points across the width of the woven tape, i.e. transverse to the wefts, to form brush beads. These strips of molten polymer may be equally spaced and the woven material can then be slit either between the strips of molten material and/or down the centre of the strips of molten material so as to provide several single or double brush components either of the same or different widths. If slitting occurs to either side of the molten strips, the slit strips of material can be bent upon themselves through 180 0 along the centre line of the strips of molten material so as to provide brush components of double thickness.
• the brush components of the present invention can be manufactured on any suitable loom capable of handling tows or wefts of considerable bulk and a machine employing a single rapier which carries the weft across the full width of the loom may be used or, alternatively, the weaving machine may be provided with two rapiers which transfer the weft from one to the other in the-centre of the machine.
• the resultant woven material was then subsequently processed by carrying out one of the extrusions and slitting operations and, if necessary, a folding operation as described above to provide a plurality of lengths or strips of brush component having a length corresponding to that of the woven material.
• These brush components can then be incorporated into a brush by locating the plastics beading in a suitable re-entrant groove. If desired. several components could be used side by side and these several components could be of different densities. If desired, the plurality of side by side components could be connected together by fusing their beads prior to assembly in the brush head.
• the characteristics of the wefts can be changed at will, e.g. the dimensions of the filaments making up the wefts can be changed or the number of filaments per weft can be altered. Likewise, a combination of different wefts can be woven into the same fabric.
• a further advantage of weaving over knitting brush components is that in a loom, higher tension can be applied to the warps than in a knitting machine. This means that the warp yarns can be kept parallel and misalignment is less likely to occur.
• extrusion and/or slitting and/or folding operations could be performed on the woven material soon after it emerges from the loom and before the material is reeled or stored on spools.
• extrusion and/or slitting and/or folding equipment would be mounted on suitable slides over the material emerging from the loom.
• hot melt adhesive could be used and in the appended claims the expression "extruded" and similar expressions relating to extrusion operations should be interpreted accordingly.
• a strengthening member or carrier within the extrusion.
• This carrier may be in the form of a thread or wire either coated or uncoated. If a wife is used, this will enable the component to maintain any position into which it is bent.

Landscapes

• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Chemical & Material Sciences (AREA)
• Materials Engineering (AREA)
• Brushes (AREA)
• Manufacturing Of Multi-Layer Textile Fabrics (AREA)
• Woven Fabrics (AREA)
• Laminated Bodies (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=10505388

Family Applications (1)

Country Status (6)

Cited By (2)

Families Citing this family (1)

Citations (8)

• 1979
  • 1979-05-23 GB GB7917976A patent/GB2052254B/en not_active Expired
• 1980
  • 1980-05-22 ES ES491759A patent/ES8102799A1/es not_active Expired
  • 1980-05-22 CA CA000352498A patent/CA1153788A/fr not_active Expired
  • 1980-05-23 EP EP80301731A patent/EP0021609A1/fr not_active Withdrawn
  • 1980-05-23 AU AU58702/80A patent/AU528450B2/en not_active Ceased
  • 1980-05-23 JP JP6876680A patent/JPS5637375A/ja active Pending
  • 1980-05-23 JP JP6876580A patent/JPS5637374A/ja active Pending

Patent Citations (8)

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