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Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
  • B29D99/00—Subject matter not provided for in other groups of this subclass
  • B29D99/0078—Producing filamentary materials
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
  • B29K2021/00—Use of unspecified rubbers as moulding material
• • 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
  • B29L2031/731—Filamentary material, i.e. comprised of a single element, e.g. filaments, strands, threads, fibres

Definitions

• This invention relates to a method of makin elastic thread and reticulated sheets of rubber or similar material and articles produced thereby and is especially useful in the production of such materials to be used in the manufacture of elastic fabrics.
• the principal objects of the invention are to provide a method by which a' product may be produced with a minimum expenditure of labor and without waste material, and to provide a new and useful product of uniform quality.
• Fig. 1 is a diagrammatic view showing in elevation and partly in section apparatus which may be used in practicing the method of the invention in the manufacture of elastic thread or sheet material.
• Fig. 2 is a section on line 22 of Fig. 1 showing the support-breaking device.
• Fig. 3 is a diagrammatic view showing in elevation and partly in section apparatus which may be used in practicing the method of the invention in the manufacture of reticulated
• Fig. 6 is a perspective view of a piece ofv reticulated elastic sheet material or fabric, parts being broken away and in section to show the constructlon thereof.
• Fig. 8 is a section on line 8-8 of Fig. '7.
• the invention consists in depositing a solution or dispersion of rubber or similar elastic material upon a' filament or netted web of material constituting a temporary support, vulcanizing or otherwise chemically changing the deposit to provide an elastic coating on the support, and progressively or otherwise disintegrating the support to provide an elastic and extensible structure.
• the invention may be practiced by drawing one or more filaments or cords l0, l0, of weak materlalsuch as loosely twisted short cotton fibers or of untwisted cellulose or other material through a bath ll of a solution adapted to coagulate the material to be deposited thereon whereby the filaments or cords are impregnated or coated with the coagulant solution.
• the filaments or.cords are then passed through a solution or natural or artificial dispersion of rubber or similar material l2, whereupon the coagulant carried by the filament or cord will cause the coagulation of a film of the solution or dispersion upon the surface of the filament or cord.
• a sufliciently thick film may be obtained by repeated dipping and drying without the coagulant if desired, but when a coagulant solution such as zinc chloride is used, the coagulant may also act to disintegrate or substantially Weaken the supporting cord or filament.
• a coagulant solution such as zinc chloride
• the coagulant may be dispensed with and the filaments or cords I0, I 0', passed directly through the bath l2 of rubber or similar solution in which case a thinner deposit will ordinarily result.
• the bath l2 may be contained in a tank 13 through the bottom of which the filaments or cords l0, l0, may enter through a flexible selfclosing guide l4 formed of soft vulcanized rubber.
• the filaments or cords After receiving a deposit of the required thickness, which may sometimes necessitate the application of more than one coat of deposited material, the filaments or cords are drawn through a drying chamber l5 through which heated air or other gases may be circulated to facilitate drying.
• the filaments or cords arethen subjected to vulcanization, preferably by being passed through a chamber l6 heated by steam coils l1.
• a convenient apparatus for this purpose comprises a pair of platens20, 2
• is stationarily mounted so that its ribs 23 contact with or barely clear the coated cords passing thereover and the platen 20, whose ribs.22 are in intercalated relation to the ribs 23, is mounted for vertical movement. Platen is provided with means for intermittently.
• the platen 20 and an armature 25 extending above the platen through a solenoid 26 may be used to project the plate against the cordsat timed intervals by intermittent energizing of the solenoid.
• the elastic cords having their fibrous or filamentous supports broken are then wound upon a reel 21.
• a continuous sheet may be produced if desired.
• a weak net fabric 30 or a perforated web of paper 42 is provided in place of the filaments or cords and is coated in a similar manner as shown in Fig. 3 by being passed from a roll 3
• the reticulated or perforated sheet of material is then passed successively through devices 36 and 31 adapted to break the support.
• devices 36 and 31 adapted to break the support.
• a device 35 similar to that previously described for breaking cord supports may be used for breaking the longitudinal or warp cord members of the support and a similar device 31, but
• the reticulated or perforated sheet comprising a support having its warp and weft elements broken to provide discontinuous portions, 38 and 39, all enclosed in a continuous elastic covering 40 of reticulated form, is then wound on a reel 4
• the reticulated or perforated sheet will be extensible and elastic in all directions and may be used for manufacturing elastic bandages, girdles and the like where both elasticity and porosity to facilitate ventilation are necessary or desirable.
• the method of making an elastic structure which comprises providing a substantially nonextensible support of substantially the same extent as that of the elastic structure to be produced, forming a coating of elastic material around the support, and so disintegrating the support as substantially to destroy its effectiveness as a tension element.
• a reticulated sheet of elastic material which comprises providing a reticulated support of substantially non-extensible warp and weft members, coating each warp and weft member with a continuous elastic coating without filling the interstices of the support, and so disintegrating the support as to substantially destroy its eifectiveness as a tension member.
• Y 5 The method of making a reticulated sheet of elastic material which comprises providing a reticulated support of substantially non-extensible warp and weft members, treating the support with a substance adapted to coagulate a coating material, depositing an elastic coating thereon, and disintegrating the support by tension applied in a plurality of directions.
• the method of making a reticulated sheet of elastic material which comprises providing a reticulated support of substantially non-extensible material, treating the support with a substance adapted to weaken the support and coagulate a coating, applying a coating of an elastic substance to the support and completing disintegration of the support by tension applied to the resulting sheet of material in a plurality of directions.
• the method of making a reticulated sheet of elastic material which comprises providing a reticulated support of substantially non-extensible sheet material, treating the support with a substance adapted to eventually disintegrate the support and to coagulate a coating applied thereto, and depositing a coating of elastic material about each member of the support without filling the coat of elastic material, disintegrating the warp I members of the support by tension applied longitudinally of the sheet, and disintegrating the weft members by tension applied cross-wise of the sheet.
• ture which comprises providing a tension-resisting support having a relatively low extensibility and having substantially the same extent as that of the extensible structure to be produced, forming a coating of highly extensible material upon the support, and then substantially destroying the eifectiveness of the support as a tension-resisting element.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Description

Priority Applications (2)

Applications Claiming Priority (1)

Publications (1)

Family

ID=24561355

Family Applications (1)

Country Status (1)

Cited By (4)

• 1932
  • 1932-10-20 US US638772A patent/US2030208A/en not_active Expired - Lifetime

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