Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
  • B31D5/00—Multiple-step processes for making three-dimensional [3D] articles
  • B31D5/0039—Multiple-step processes for making three-dimensional [3D] articles for making dunnage or cushion pads
  • B31D5/0073—Multiple-step processes for making three-dimensional [3D] articles for making dunnage or cushion pads including pillow forming
• • 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
  • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
  • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
  • Y10T156/1304—Means making hole or aperture in part to be laminated
• • 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
  • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
  • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
  • Y10T156/1313—Cutting element simultaneously bonds [e.g., cut seaming]

Definitions

• Machine for making air cushions for packaging from a tubular film placed on a reel
• the present invention relates to a machine for manufacturing air cushions for packaging from a tubular film disposed on a reel, in particular for wedging delicate and fragile objects.
• Document WO 99/61232 contains a history of the improvements made to the types of machines which are the subject of the present invention, and defines a machine for manufacturing air cushions for packaging which does not have the defects of the art. earlier. However, the machine defined in document WO 99/61232 still presents some problems, in particular as regards the tension of the tubular film intended for manufacturing the air cushions. This tension is very high to allow good perforation of the film, therefore regular filling of the cushions.
• the object of the invention is to provide a machine for manufacturing air cushions for packaging, which represents a marked improvement with respect to known machines o, in particular as regards the tension of the film, in order to ensure operation. reliable machine both in quality and in time.
• the welding inflation device being placed after the means arranged inside said film and, before the means for driving said film so as to draw the tubular film through the welding inflation device, l '' hollow needle of the welding inflation device being fixed to a first balance disposed on one side of said film controlled by a first cylinder, and two heating elements placed upstream and downstream of the needle fixed on a second balance disposed on the other side of said film controlled by a second cylinder, characterized in that the means for preventing the air introduced into the tubular film from s' escape towards said reel, that is to say upstream, consist of an elongated element extending in a transverse direction relative to the film fixed to said first balance so as to be kept apart from said film while the latter is moving and be introduced into a slot provided in a plate of the machine frame by pushing said film into the slot creating a tight fold on the latter.
• FIG. 1 schematically represents the principle of a machine according to the invention
• FIG. 2 represents the section A-A of FIG. 1 showing the drive device seen from above
• FIGS. 3 a, b, c schematically represent the different phases of the operation of the machine shown in FIG. 1.
• an embodiment of the machine according to the invention comprises means 8 for drawing the tubular film 1, which can be of any material which is welded by thermal welding, for example plastic.
• the film is drawn in the direction of arrow 16 from a reel, which has not been shown.
• the film 1 first passes over a deflection roller 17 which causes it to move vertically in the drawing, then it passes in front of a plate 2 of the frame comprising a slot 2a.
• the slot 2a in the plate 2 is arranged in front of an elongated element 2b fixed on a first balance 12.
• the tubular film 1 then meets a body 3 inserted inside said tubular film 1 at the time of switching on. the machine through the opening, which is at the start of the film 1.
• the body 3 rests on two bars or rods 4 arranged outside of said film 1 and separated from a distance less than the outside diameter of the body 3.
• the body 3 is for example a plastic cylinder of about 1 cm in diameter, which is held in place only by gravity on the two bars 4. Just after it has passed around from the body 3 the film 1 passes through the welding inflation device.
• the welding inflation device comprises at least one hollow needle 5 connected to inflation means (for example a compressor not shown) and fixed to the first balance 12 articulated on an axis 15, and pressure thermal welding means 6 fixed to a second balance 10 articulated on an axis 14.
• inflation means for example a compressor not shown
• pressure thermal welding means 6 fixed to a second balance 10 articulated on an axis 14.
• the pendulum movement of the balance 12 is controlled by a first cylinder 13 and the pendulum movement of the balance 10 is controlled by a second cylinder 11.
• the welding means 6 consist of two heating bars (for example by thermal resistance) arranged one above the other of length at least equal to the width of the tubular film, and placed on one side of said film in face of stop bars 7 placed on the other side one above the other.
• the hollow needle 5 being disposed between the stop bars 7.
• the welding inflation device further comprises between the heating bars tips or a tooth knife 18 partially perforating or cutting the tubular film 1 in order to facilitate cutting.
• the drive device 8 comprises two cylinders 19, 19a having at each of their ends diameters larger than the diameter of their central parts 20, 20a.
• the end portions of the cylinders 19, 19a are coated with flexible and elastic material, for example foam rubber.
• the cylinders 19, 19a are in contact with each other by their ends, leaving a space in their central part so that the two walls of the tubular film 1 can remain apart after inflation.
• the two cylinders are driven in rotation by a motor 23 by means of the gears 24 and 21.
• the element 2b consists of a blade having a thickness substantially less than the opening of the slot 2a so that the blade can introduce into the slot 2a the two walls of the tube 1.
• a tension is created on the latter. Indeed, the film 1 is retained on the roller 17 and in the drive device 8, this tension improves the separation of the two walls of the tubular film 1.
• the needle 5 is introduced along arrow 27 (FIG. 3b) into the tubular film 1 by the movement of the balance 12 actuated by the jack 13 perforating a single wall, because the introduction zone is located just after the body 3 and the walls of the tubular film are well separated.
• the inflation then takes place, the air being retained by the weld 29 and by the fold wedged in the slot 2a of the plate 2 by the element 2b.
• Welding can then be carried out, the welding bars 6 being displaced along the arrow 28 (FIG. 3c) by the pendulum 10 controlled by the jack 11 so as to come to bear on the stop bars 7 clamping between them and the bars of stops the tubular film.
• the sealing bars are then heated so as to seal the two walls of the tubular film forming a cushion 30.
• the needle 5 and the element 2b are withdrawn back by a movement in the opposite direction of the balance 12 controlled by the actuator 13.
• the welding bars are withdrawn behind by a reverse movement of the balance 10 controlled by the actuator 11.
• the cushion 30 is then pulled by the cylinders 8 on its edges as shown in FIG. 2 of a length equal to the length of a cushion.

Landscapes

• Lining Or Joining Of Plastics Or The Like (AREA)
• Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
• Buffer Packaging (AREA)
• Making Paper Articles (AREA)
• Containers And Plastic Fillers For Packaging (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=4323267

Family Applications (1)

Country Status (8)

Families Citing this family (6)

Family Cites Families (2)

• 2002
  • 2002-01-17 CH CH00073/02A patent/CH694691A5/fr not_active IP Right Cessation
• 2003
  • 2003-01-14 AU AU2003235689A patent/AU2003235689A1/en not_active Abandoned
  • 2003-01-14 CA CA002473354A patent/CA2473354A1/en not_active Abandoned
  • 2003-01-14 JP JP2003559753A patent/JP2005514245A/ja active Pending
  • 2003-01-14 WO PCT/CH2003/000015 patent/WO2003059609A1/fr not_active Ceased
  • 2003-01-14 CN CNB038023997A patent/CN1274488C/zh not_active Expired - Fee Related
  • 2003-01-14 EP EP03700037A patent/EP1465764A1/de not_active Withdrawn
  • 2003-01-14 US US10/501,157 patent/US7067025B2/en not_active Expired - Fee Related

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events