Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
  • B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
  • B65G15/30—Belts or like endless load-carriers
  • B65G15/32—Belts or like endless load-carriers made of rubber or plastics
• • A—HUMAN NECESSITIES
  • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
  • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
  • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
  • A24C5/14—Machines of the continuous-rod type
  • A24C5/18—Forming the rod
  • A24C5/1857—Belt construction or driving means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
  • B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
  • B65G15/22—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration comprising a series of co-operating units
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
  • B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
  • B65G15/30—Belts or like endless load-carriers
  • B65G15/54—Endless load-carriers made of interwoven ropes or wires
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
  • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
  • B65G2201/02—Articles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
  • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
  • B65G2201/04—Bulk

Definitions

• the tape is subject to heat and friction in the garniture and also to an alternating flexing action.
• some of the ink from the printing on the cigarette paper offsets on to the upper face of the tape and causes the fibres to rot.
• the working life of such tape is very short.
• the pressure of the tape against the paper tends to produce so-called tape marks, i.e. a more or less pronounced embossed weave appearance.
• the present invention accordingly seeks to improve the working life of the tape and to reduce tape marks on the cigarettes.
• cigarette-machine tape is first treated with an application of microcrystalline wax for lubricating its internal fibres and is then given an external coating of a lacquer.
• a considerably improved working life for example a three-fold increase can be obtained without it being necessary to employ an excessive amount of wax, such as would involve risk of wax-staining of the cigarettes in passing through the hot garniture.
• the rotting effect of the drying ink from the cigarette print is resisted by the lacquer.
• the latter is preferably a solution of a copolymer of vinyl chloride/ acetate resin, which has been found to possess very good resistance to wear and to ink, but other synthetic resin or nitro cellulose lacquers may be employed.
• the cigarette-machine tapes are first immersed in a solution of a microcrystalline wax in a volatile solvent for the wax, preferably carbon tetrachloride, using 5 g. of a microcrystalline wax in 100 g. of solution from which the tapes absorb approximately /2 to 1 g., depending on the size of the tape treated.
• the tapes are placed in baskets and lowered, in a fume cabinet, into the solution, held at a temperature of 120 F., for a period of say, four minutes.
• the window of the cabinet is closed and an extractor assists in removing fumes rising from the solvent.
• the tapes When the tapes are removed from the solution, they are laid on a draining board within the cabinet for a few 3,234,941 Patented Feb. 8, 1966 minutes. As the carbon tetrachloride evaporates, the tapes become whiter and the operator can judge by the degree of whiteness when they can be taken from the cabinet and hang on racks to dry by airing overnight.
• the tapes are coated on one side with the coating material which is evenly distributed thereon.
• the tapes When the tapes have been coated on one side, they are dried. This may be effected by hanging them on hooks 1 of the revoluble carrier of a drying machine. After the tapes have been thus dried, each tape is turned and the uncoated side is then coated and dried in the drying chamber in the manner described above. On their second removal from the drying chamber, the tapes are hung on stands overnight.
• the present invention contemplates coating two tapes at a time as well as coating tapes which are of various lengths.
• the coating material is preferably a copolymer of vinyl chloride/ acetate resin dissolved in a solvent comprising a ketone or a mixture containing a ketone or ketones, for example a mixture of acetone and toluene.
• a suitable such solution coating by way of example may comprise 90% by weight of vinyl chloride and of vinyl acetate in a ketone solution having an intrinsic viscosity of 0.79 and a specific gravity of 1.36.
• other similar vinyl chloride/ acetate solution coatings may be employed.
• the tapes After being hung overnight or, say, for 24 hours, to remove all traces of solvent, the tapes are calendered and dried.
• This invention contemplates calendering and drying two sets of tapes as well as tapes of different lengths.
• An improved cigarette machine tape having wear and abrasion resistance properties comprising a narrow endless woven fabric tape constituting a cigarette machine tape of predetermined length and having fibers, said fibers having microcrystalline wax impregnated thereon for lubricating the fibers to reduce wear of the tape caused by the flexing of the tape fibers in the cigarette machine, and an external layer of lacquer of a copolymer of vinyl chloride/ vinyl acetate resin on both sides of the tape for providing a protective layer for said wax and said fibers.

Landscapes

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

Applications Claiming Priority (1)

Publications (1)

Family

ID=10216968

Family Applications (1)

Country Status (7)

Cited By (3)

Citations (5)

• 0
  • NL NL267031D patent/NL267031A/xx unknown
• 1960
  • 1960-07-15 GB GB24769/60A patent/GB909691A/en not_active Expired
• 1961
  • 1961-07-12 FI FI125861A patent/FI40147C/fi active
  • 1961-07-13 US US124312A patent/US3234040A/en not_active Expired - Lifetime
  • 1961-07-14 BE BE606171A patent/BE606171A/fr unknown
  • 1961-07-14 CH CH831061A patent/CH371990A/fr unknown
• 1966
  • 1966-12-31 MY MY196657A patent/MY6600057A/xx unknown

Patent Citations (5)

Also Published As

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