AU674431B2 - Plastic bag chain with support means - Google Patents
Plastic bag chain with support meansInfo
- Publication number
- AU674431B2 AU674431B2 AU72774/94A AU7277494A AU674431B2 AU 674431 B2 AU674431 B2 AU 674431B2 AU 72774/94 A AU72774/94 A AU 72774/94A AU 7277494 A AU7277494 A AU 7277494A AU 674431 B2 AU674431 B2 AU 674431B2
- Authority
- AU
- Australia
- Prior art keywords
- bags
- rail
- support
- rails
- strips
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 239000004033 plastic Substances 0.000 title claims description 14
- 229920003023 plastic Polymers 0.000 title claims description 14
- 239000000463 material Substances 0.000 claims description 18
- 239000004831 Hot glue Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 238000000151 deposition Methods 0.000 claims description 2
- 239000002985 plastic film Substances 0.000 description 4
- 229920006255 plastic film Polymers 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
-
- 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
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/60—Uniting opposed surfaces or edges; Taping
- B31B70/61—Uniting opposed surfaces or edges; Taping by applying or securing strips or tape
-
- 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
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2155/00—Flexible containers made from webs
- B31B2155/003—Flexible containers made from webs starting from tubular webs
-
- 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
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2160/00—Shape of flexible containers
- B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
-
- 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
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/74—Auxiliary operations
- B31B70/92—Delivering
- B31B70/94—Delivering singly or in succession
- B31B70/946—Delivering singly or in succession the bags being interconnected
Landscapes
- Orthopedics, Nursing, And Contraception (AREA)
- Supplying Of Containers To The Packaging Station (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Making Paper Articles (AREA)
Description
TITLE: PLASTIC BAG CHAIN WITH SUPPORT MEANS. TECHNICAL FIELD:
This invention relates to plastic bags and is more particularly concerned with a method of providing support means for interconnected plastic bags, often referred to as a bag chain, for use on in-line charging apparatus. It follows the invention is also concerned with a plastic bag chain characterised by the provision of support means as provided by this method.
BACKGROUND ART:
Various forms of interconnected plastic bags are known, the object being to adapt the bags to be supported in a depending manner from tracks or similar means to be traversed in a continuous manner through horizontally pathed bag charging apparatus. Traditionally such bags include re- closable elements and the charging apparatus includes means for closing or sealing the bags following the charging thereof. Typically the bags are joined by support strips, one to each side of the bags, interconnecting the bags and which are severed therefrom following charging and sealing of the bags. The strips each integrally incorporate a continuous rail or rib which locate with the support tracks, the bags being so supported during passage through the charging apparatus. The strips are formed either as integral elements of the bag forming material or as separate rail incorporating strips which are subsequently affixed to integral strip forming elements which otherwise do not incorporate support rails.
The method and means adopted depends primarily on the type of plastic material utilised in forming the bags. That is some materials do not lend themselves, at least as a matter of cost, to the incorporation of rails as an integral element of the bag material. Whichever known approach is undertaken the rails are integrally formed with either the bag material or the subsequently affixed strip. Owing to the vast numbers of bags involved with such operations cost effectiveness is extremely critical.
An intention of this invention is to provide a rail for such interconnected bags which can subsequently be affixed to either the bag forming material or separate support strip material as the case maybe. More particular the intention is to provide such a rail which both utilises low cost material in its formation and which is readily and thus cost effectively affixed to the desired base material. Thus this invention provides a cost effective method and means of providing support means to a bag chain.
SUBSTITUTE SHE
Further, the invention lends itself to application to flat plastic film prior to folding of the film in readiness for conversion to a bag chain. Thus this invention provides a cost effective application of bag support means to bag forming films not hitherto utilised for such purposes and in particular adapting them for use with horizontal bag charging apparatus.
DISCLOSURE OF THE INVENTION:
According to a first aspect of this invention there is provided a series of plastics bags interconnected along each of two opposing sides thereof by a support strip on which a rail is affixed and by which the bags can be suspended and traversed through horizontally pathed charging apparatus characterised in that the rails are formed by application of a ribbon of hot- melt adhesive to a side of each of the support strips, the ribbons being fused thereto in a manner as to stand proud of the associated side to thus form the rails.
According to a second aspect of this invention there is provided a method of providing a support rail to a support strip for connecting a series of plastics bags along a side thereof and by which, with the provision of two such strips one to each of two opposing sides of the bags, the bags can be suspended and traversed through horizontally pathed charging apparatus characterised in that the rail is formed by passing the strip adjacently past a nozzle connected to a source of hot-melt adhesive and depositing from the nozzle a ribbon of hot-melt adhesive along a side of the support strip in a manner to fuse thereto as to stand proud of that side to thus form the rail.
BRIEF DESCRIPTION OF THE DRAWINGS:
Fig. 1 is a side view of an apparatus for utilising the method of this invention to apply support rails to plastic film prior to the folding thereof in readiness to form a bag chain having integral connecting support strips, and
Fig. 2 is a cross-sectional view taken on line A-A on Fig.1.
Referring to the drawings in further describing the invention rails 3 are affixed to a flat plastic film 5 prior to folding in readiness for conversion to a bag chain. With reading this description it will be appreciated by those skilled in the art that the rail of this invention can also be suitable for use in providing a support rail for interconnected bags such as disclosed in our co-pending
SUBSTITUTE SHEET
PCT/NZ 94/00012 or other chain bag arrangements such as disclosed in U.S. Patents 4,514,962 and 4,637,060.
As distinct to the prior art the rail 3 of this invention is applied subsequent to manufacture of the bag forming material 5. Each rail 5 is formed by applying a ribbon 3a of a suitable hot-melt adhesive to the side 5a of the bag material 5. More particularly a hot-melt adhesive of suitable composition is preferably extruded through a nozzle gun 6 disposed adjacent to the side 5a of a run of bag forming material 5. A continuous ribbon 3 a of the adhesive is applied to the material 5 as it passes the nozzle 6. While only one nozzle 6 is depicted two nozzles 6 are provided at an appropriate spacing apart whereby with folding of the film 5, as described below, the resultant rails 3 are opposing one another as depicted in Fig 2. With curing the ribbon 3 a adheres to the material 5 and provides a rail 3 thereon standing proud of the side 5a thereof.
Preferably a hot-melt adhesive suitable for application to a variety of plastics material is utilised. Preferably an adhesive having rapid curing is also utilised. As depicted preferably the flat plastic film material 5 is trailed over a series of rollers 7 mounted in a suitable frame 8 in known manner in readiness for longitudinal folding, indicated schematically at 9, and forming into bags. Preferably cooling means such as banks of air jets 10 are mounted on the frame to facilitate a prompt bonding and curing of the rail 3 forming adhesive. Further, preferably the extruding nozzle 6 provides for a reasonably pre-determined shape of rail 3, the rail 3 preferably including a clearly defined surface or shoulder 11, ideally disposed normal to the side 5a, on the "underside" thereof by which the eventually formed bags can be supported on tracks when being traversed and charged through bag charging apparatus such as described in our co-pending PCT/NZ 94/00012 application. Referring to the bag chain of that application the rail 7 thereof could be formed by the method described herein.
SUBSTITUTE SHEET
Claims (4)
1. A series of plastics bags interconnected along each of two opposing sides thereof by a support strip on which a rail is affixed and by which the bags can be suspended and traversed through horizontally pathed charging apparatus characterised in that the rails are formed by application of a ribbon of hot-melt adhesive to a side of each of the support strips, the ribbons being fused thereto in a manner as to stand proud of the associated side to thus form the rails.
2. A series of plastics bags as claimed in claim 1 wherein the support strips are moulded integral with the bag material to form either top opening or bottom opening side extremities of the bags.
3. A series of plastics bags as claimed in claim 1 wherein the support strips are formed as separate elements to the bag forming material and are affixed to either top opening or bottom opening side extremities of the bags after the rails have been affixed to the support strips.
4. A method of providing a support rail to a support strip for connecting a series of plastics bags along a side thereof and by which, with the provision of two such strips one to each of two opposing sides of the bags, the bags can be suspended and traversed through horizontally pathed charging apparatus characterised in that the rail is formed by passing the strip adjacently past a nozzle connected to a source of hot-melt adhesive and depositing from the nozzle a ribbon of hot-melt adhesive along a side of the support strip in a manner to fuse thereto as to stand proud of that side to thus form the rail.
SUBSTITUTE SHEET
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NZ24833593 | 1993-08-05 | ||
| NZ248335 | 1993-08-05 | ||
| PCT/NZ1994/000078 WO1995004651A1 (en) | 1993-08-05 | 1994-08-02 | Plastic bag chain with support means |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU7277494A AU7277494A (en) | 1995-02-28 |
| AU674431B2 true AU674431B2 (en) | 1996-12-19 |
Family
ID=19924433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU72774/94A Ceased AU674431B2 (en) | 1993-08-05 | 1994-08-02 | Plastic bag chain with support means |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU674431B2 (en) |
| WO (1) | WO1995004651A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US466552A (en) * | 1892-01-05 | William c | ||
| US4654878A (en) * | 1982-09-30 | 1987-03-31 | Signode Corporation | Plastic bag chain |
| US4687060A (en) * | 1986-06-13 | 1987-08-18 | Methane Drainage Ventures | Production and grout liner for methane drainage in subterranean boreholes and method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4191230A (en) * | 1978-02-16 | 1980-03-04 | Minigrip, Inc. | Integral extruded construction for bags |
| US4514962A (en) * | 1982-12-16 | 1985-05-07 | Minigrip, Inc. | Method and apparatus for filling reclosable bags |
| US4637060A (en) * | 1983-08-05 | 1987-01-13 | Minigrip | Zipper-lock bag chain adapter for automatic loading and heat seal closing |
| US4630311A (en) * | 1984-11-29 | 1986-12-16 | Minigrip, Inc. | Zipper-lock bag chain with tearable strip interconnection means |
| US4665552A (en) * | 1985-06-18 | 1987-05-12 | Minigrip, Inc. | Zipper equipped bags and method of and means for manually filling and separating them |
| AU599921B2 (en) * | 1986-06-16 | 1990-08-02 | Signode Corporation | Zipper bag filling machine |
| EP0684923A4 (en) * | 1993-02-23 | 1998-02-11 | Minigrip Ltd | Interconnected plastic bags charging apparatus and method. |
-
1994
- 1994-08-02 AU AU72774/94A patent/AU674431B2/en not_active Ceased
- 1994-08-02 WO PCT/NZ1994/000078 patent/WO1995004651A1/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US466552A (en) * | 1892-01-05 | William c | ||
| US4654878A (en) * | 1982-09-30 | 1987-03-31 | Signode Corporation | Plastic bag chain |
| US4687060A (en) * | 1986-06-13 | 1987-08-18 | Methane Drainage Ventures | Production and grout liner for methane drainage in subterranean boreholes and method |
Also Published As
| Publication number | Publication date |
|---|---|
| AU7277494A (en) | 1995-02-28 |
| WO1995004651A1 (en) | 1995-02-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |