WO1995021092A1 - Bag sealing apparatus - Google Patents
Bag sealing apparatus Download PDFInfo
- Publication number
- WO1995021092A1 WO1995021092A1 PCT/GB1995/000205 GB9500205W WO9521092A1 WO 1995021092 A1 WO1995021092 A1 WO 1995021092A1 GB 9500205 W GB9500205 W GB 9500205W WO 9521092 A1 WO9521092 A1 WO 9521092A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bag
- sealing
- supply pipe
- sealing means
- clamping
- Prior art date
Links
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 articles ; Making three-dimensional articles
- B31D5/0039—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads
- B31D5/0073—Multiple-step processes for making three-dimensional articles ; Making three-dimensional articles for making dunnage or cushion pads including pillow forming
-
- 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
- B31D2205/00—Multiple-step processes for making three-dimensional articles
- B31D2205/0005—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads
- B31D2205/0011—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads including particular additional operations
- B31D2205/0017—Providing stock material in a particular form
- B31D2205/0023—Providing stock material in a particular form as web from a roll
-
- 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
- B31D2205/00—Multiple-step processes for making three-dimensional articles
- B31D2205/0005—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads
- B31D2205/0011—Multiple-step processes for making three-dimensional articles for making dunnage or cushion pads including particular additional operations
- B31D2205/0052—Perforating; Forming lines of weakness
Definitions
- BAG SEALING APPARATUS invention relates to bag sealing apparatus, It is known to produce air bags, or air pillows, for use in packaging goods to protect them. Thus, a delicate article might be surrounded with air pillows in a cardboard box to protect it from damage during transport. It is known to make such air pillows from heat sealable plastics material and the bags are produced in a strip with each bag being heat sealed from the next. The known sealing method is unreliable however as the back pressure from air in the bag as it is being sealed tends to unseal the bag.
- bag sealing apparatus comprising a fluid source to pump fluid towards an opening in a bag, means for sealing the opening in the bag and means for clamping the bag downstream of the sealing means to reduce fluid back pressure.
- the quantity of fluid introduced into the bag can be closely controlled as fluid cannot escape past the clamping means during sealing.
- the fluid source may be a source of compressed gas, preferably compressed air.
- the sealing means may seal the bag in any suitable way, such as by adhesive or mechanical means, but preferably the sealing means comprises heat sealing means.
- the clamping means may comprise a resilient member which is urged against the bag.
- the resiliency aids in providing a fluid tight seal.
- the clamping means comprises two resilient clamping members arranged on opposite sides to clamp a bag between them.
- the clamping means is arranged to clamp the bag before the sealing means starts to seal the bag.
- the clamping means and sealing means may be mounted separately, but in one embodiment, a clamping member of the clamping means and a sealing member of the sealing means are mounted together on a mounting member.
- the clamping member is resiliently mounted ahead of the sealing member so as to engage the bag before the sealing member. This ensures that the bag is clamped before the sealing operation commences.
- a second mounting member is provided which mounts a second clamping member and/or a second sealing member. Conveniently, only one of the first and second
- both of the first and second mounting members may be movable towards and away from each other.
- the or each mounting member is preferably moved pneumatically.
- the fluid source may be arranged to pump fluid through a fluid supply pipe.
- the apparatus may be arranged to operate in a cycle.
- the material for the bag may be provided as a strip which is advanced by advancing means through the apparatus.
- the means for advancing the bag material may take any suitable form and preferably comprises two rollers side by side between which the material passes.
- At least one of the rollers includes a circumferential recess and the recess or both recesses together receive the supply pipe.
- the bag material may be in the form of two layers open at one side and the fluid supply pipe may extend between the layers through the open side. Means is preferably provided for sealing the open side.
- apparatus for making a bag comprising means for advancing material for making a bag from a store, the material being in the form of two layers open at one side, a supply pipe extending between the layers through the open side and means for sealing the open side.
- This arrangement allows the bag to be filled directly and without complication.
- the material may be open at both sides but preferably is open on only one side.
- the open side of the material is preferably sealed upstream of the end of the supply pipe.
- the side sealing means may take any suitable form and may comprise heat sealing means.
- the side sealing means preferably comprises a member which is movable towards and away from the side of the material.
- the apparatus preferably includes bag sealing means for sealing the bag after the bag has been filled from the supply pipe.
- the bag sealing means preferably lies downstream of the advancing means.
- the bag sealing means preferably includes a member which is movable towards and away from the material.
- the bag sealing means and the side sealing means are preferably rigidly connected and moved together.
- the bag sealing means member and/or the side sealing means member may be moved by pneumatic means.
- the means for advancing the bag material may take any suitable form and preferably comprises two rollers side by side between which the material passes.
- At least one of the rollers includes a circumferential recess and the recess or both recesses together receive the supply pipe.
- apparatus for making a bag comprising a compressed fluid supply pipe and two rollers arranged side by side and between which material for making a bag passes, one or both of the rollers including a circumferential recess and the recess or both recesses together receiving the supply pipe.
- the supply pipe substantially fills the recess or both recesses.
- the bag material may be provided as a strip.
- bag sealing means is provided immediately past the rollers. Thus, the bag sealing will leave only a minimal amount of fluid between the seal and the rollers.
- clamping means is provided for clamping a bag
- Fig. 1 is a perspective view of the apparatus of the first embodiment
- Fig. 2 is a detail side elevation of the heat sealing part of the apparatus of Fig. 1;
- Fig. 3 is the view of Fig. 2 of the second embodiment.
- Fig. 1 shows the apparatus 10 of the first embodiment.
- a roll of bag material 12 is stored on a spindle and material 14 from the roll passes over an upper roller 16 and downwardly between two advancing rollers 18 which grip the material and are driven by a motor (not shown) to advance the material in steps.
- the material is in two layers with a fold on one side and being open at the other side.
- a pneumatic source powers two pistons 20 provided beneath the advancing rollers 18.
- a bag sealing member 22 parallel to and beneath one of the advancing rollers 13.
- the outer end of each piston 20 is connected to an arm 24 which extends upwardly past the advancing rollers 18 and inwardly to mount an upright side member 26.
- One side member 26 includes a heating element 28 and the other side member 26 mounts a sprung mounted part 30.
- a compressed air supply pipe 32 extends inwardly parallel to the advancing rollers 18 so as to lie between two layers of the material 14 centrally thereof and turns to extend downwardly past the upright members 26 to the advancing rollers 18.
- Each advancing roller 18 includes a central
- the end of the supply pipe 32 does not extend downwardly past the plane containing the axes of the advancing rollers 18.
- the bag members 22 are shown in detail in Fig. 2.
- One of the bag members 22 mounts two vertically spaced heating elements 36.
- the other bag member 22 carries two spring mounted parts 35 opposite the heating elements 36. Between the spring mounted parts 33 is provided a serrated blade 40.
- the bag member 22 mounts a projection 42 with a resilient end and a similar projection 42 with a resilient end is spring mounted in an oppositely disposed position on the other bag member 22.
- the motor which drives the advancing rollers advances in steps.
- the rollers 18 have been advanced and stopped the pistons 20 are operated and the upright elements 26 are brought together at the open side of the material 14.
- Current is applied to the heating element 28 to heat seal the edges of the material which is urged against the heating element 28 by the spring mounted part 30.
- the members 22 are brought together. As the members 22 are brought together, the clamping
- the first bag has beer. created.
- the bags are created in a strip and can be torn off at the perforated line created by the knife 40.
- clamping projections act to close off the area being sealed by the heating element 36 from back pressure from the bag which has just been formed so that the seals which are created are not subjected to that pressure until the seals have been formed and cooled to some degree. In this way a seal is reliably formed.
- the supply pipe 32 and the recesses 34 in the rollers 18 are sized and spaced in relation to the thickness of the bag material 14 such that little or no air can escape backwards between the supply pipe 32 and the rollers 18 and thus the amount of air supplied to each bag can be controlled precisely and a uniform series of bags produced.
- the supply pipe may supply compressed air at 3psi.
- the bag material may be any suitable heat sealable material which provides an air barrier and may be low density polyethylene (LDPE), for example.
- LDPE low density polyethylene
- the sealing contact time may be 1.5 seconds.
- the second embodiment is shown in Fig. 3 and is similar to the embodiment of Figs. 1 and 2. Only the differences from the first embodiment will be
- the projections 42 are not provided on the bag members 22 but instead are provided on separately operated rams not shown). This enables greater and
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69507015T DE69507015T2 (en) | 1994-02-01 | 1995-02-01 | DEVICE FOR SEALING BAGS |
US08/687,394 US5937614A (en) | 1994-02-01 | 1995-02-01 | Bag sealing apparatus |
EP95907089A EP0749388B1 (en) | 1994-02-01 | 1995-02-01 | Bag sealing apparatus |
AU15424/95A AU1542495A (en) | 1994-02-01 | 1995-02-01 | Bag sealing apparatus |
JP7520452A JPH09511201A (en) | 1994-02-01 | 1995-02-01 | Bag sealing device |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9401913A GB9401913D0 (en) | 1994-02-01 | 1994-02-01 | Bag sealing apparatus |
GB9401913.0 | 1994-02-01 | ||
US34529594A | 1994-11-28 | 1994-11-28 | |
US08/345,295 | 1994-11-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995021092A1 true WO1995021092A1 (en) | 1995-08-10 |
Family
ID=26304252
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1995/000205 WO1995021092A1 (en) | 1994-02-01 | 1995-02-01 | Bag sealing apparatus |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0749388B1 (en) |
JP (1) | JPH09511201A (en) |
AU (1) | AU1542495A (en) |
CA (1) | CA2182189A1 (en) |
WO (1) | WO1995021092A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000073149A1 (en) * | 1999-06-01 | 2000-12-07 | Andrew Laitt | A method of packaging goods |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019004313A1 (en) * | 2019-06-19 | 2020-12-24 | Rainer Gmbh | Air cushions as packaging protection |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0276628A1 (en) * | 1987-01-21 | 1988-08-03 | ILAPAK Research & Development S.A. | Machine for making tubular bags with a stripping device |
EP0350617A2 (en) * | 1988-07-15 | 1990-01-17 | PMB Holding B.V. | Method for making, filling and closing packages from a tubular web, and device for executing the method |
EP0368095A1 (en) * | 1988-11-07 | 1990-05-16 | Rovema Verpackungsmaschinen Gmbh | Tubular bag machine |
EP0381400A2 (en) * | 1989-02-02 | 1990-08-08 | Du Pont Canada Inc. | Vertical form and fill machine and process |
US5231817A (en) * | 1992-06-25 | 1993-08-03 | E. I. Du Pont De Nemours And Company | Pouch collapsing assembly for vertical form, fill and seal machine |
-
1995
- 1995-02-01 AU AU15424/95A patent/AU1542495A/en not_active Abandoned
- 1995-02-01 CA CA002182189A patent/CA2182189A1/en not_active Abandoned
- 1995-02-01 JP JP7520452A patent/JPH09511201A/en active Pending
- 1995-02-01 WO PCT/GB1995/000205 patent/WO1995021092A1/en active IP Right Grant
- 1995-02-01 EP EP95907089A patent/EP0749388B1/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0276628A1 (en) * | 1987-01-21 | 1988-08-03 | ILAPAK Research & Development S.A. | Machine for making tubular bags with a stripping device |
EP0350617A2 (en) * | 1988-07-15 | 1990-01-17 | PMB Holding B.V. | Method for making, filling and closing packages from a tubular web, and device for executing the method |
EP0368095A1 (en) * | 1988-11-07 | 1990-05-16 | Rovema Verpackungsmaschinen Gmbh | Tubular bag machine |
EP0381400A2 (en) * | 1989-02-02 | 1990-08-08 | Du Pont Canada Inc. | Vertical form and fill machine and process |
US5231817A (en) * | 1992-06-25 | 1993-08-03 | E. I. Du Pont De Nemours And Company | Pouch collapsing assembly for vertical form, fill and seal machine |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000073149A1 (en) * | 1999-06-01 | 2000-12-07 | Andrew Laitt | A method of packaging goods |
Also Published As
Publication number | Publication date |
---|---|
AU1542495A (en) | 1995-08-21 |
CA2182189A1 (en) | 1995-08-10 |
EP0749388B1 (en) | 1998-12-30 |
JPH09511201A (en) | 1997-11-11 |
EP0749388A1 (en) | 1996-12-27 |
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