CA1267114A - Hang bag - Google Patents
Hang bagInfo
- Publication number
- CA1267114A CA1267114A CA000504860A CA504860A CA1267114A CA 1267114 A CA1267114 A CA 1267114A CA 000504860 A CA000504860 A CA 000504860A CA 504860 A CA504860 A CA 504860A CA 1267114 A CA1267114 A CA 1267114A
- Authority
- CA
- Canada
- Prior art keywords
- bag
- film
- face
- body portion
- corona treated
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/14—Suspension means
Abstract
ABSTRACT
A hang bag comprises a body portion (1) and a hanger portion (2). The body portion (1) is formed of front and rear panels (3) and (4) of shrinkable film sealingly joined together at the end (6), for instance by folding. It may be a double-side weld bag. The hanger portion (2) comprises face and rear layers (10) and (11) of heat shrinkable film laminated or otherwise securely extending from, respectively, the face and rear panels (3) and (4) and non-shrink film (12) or other reinforcing material laminated between the layers (10) and (11) and provided, or capable of being provided, with a perforation (13) by which the bag may be hung from a peg. Generally all laminated surfaces are corona treated in order to improve lamination.
A hang bag comprises a body portion (1) and a hanger portion (2). The body portion (1) is formed of front and rear panels (3) and (4) of shrinkable film sealingly joined together at the end (6), for instance by folding. It may be a double-side weld bag. The hanger portion (2) comprises face and rear layers (10) and (11) of heat shrinkable film laminated or otherwise securely extending from, respectively, the face and rear panels (3) and (4) and non-shrink film (12) or other reinforcing material laminated between the layers (10) and (11) and provided, or capable of being provided, with a perforation (13) by which the bag may be hung from a peg. Generally all laminated surfaces are corona treated in order to improve lamination.
Description
'7 ~
Hang Bags Field of the Invention This invention relates to the construction and production of a hang b~g, that is to say a bag formed of thermoplastic material in which goods rnay be packaged and provided with a hanger by which the bag may be hung from a peg in order to display the goods. In particular the inven~ion relates to a hang bag formed of shrinkable film and provided with an improved hanger construction.
Backqround of the Invention Food and other goods are frequently packaged for retail pur~oses in shrinkable film that is then shrunk around the goods. The film may initially be in the form of a bag in which event this is open at one end to permit the insertion of the goods and is then heat sealed and shrunk around the goods. It is often desirable to be able to hang the bag containing t~e goods from a peg, for instance a hook or the peg of a pegboard, for display in a supermarket. Tt is therefore necessary to provide hanger means by which the bag can be hung from a hook.
The hanger means can be an external hanger into which the bag fits, for instance a cone-shaped cut out of paper or other material. Preferably however the bag includes hanger means as part of the bag.
In one system a strap or hook is permanently secured to the bag. For instance in United States patent 3,207,300 a strap is heat sealed to a bag.
~nfortunately it is difficult to obtain an adequately reliable seal hetween many externally applied straps and bags. Also it is not easy to construct the strap so that it can be sealed to the bag and will readily stand away from the bag, to permit easy hanging on a peg, during use.
., ' ' ' i'7.~
6~536-559 In German GBM 8224353.0 thls problem ls overcome by forming the strap of non-shrinkable material so that when the bag is shrunk around the goods the strap stands clear of the bag.
However it is still necessary ~o take par~icular precautions if an adequa~e seal is to be achieved between the strap and the bag.
In another system the hanger means comprises a hole punched in the bag material at one end of the bag. Unfortllnately the bag material is liable to tear around the hole. Localised tearing can be minlmised by providing a metal or plastic eyelet as reinforcement around the hole but it is inconvenient to secure this reinforcement and the sheet material between the reinforcement and the filled part of the bag is still liable to tear.
It is therefore an object of the invention to provide a hang bag comprising a bag of shrinkable fllm in whlch goods may be packaged and provlded with lmproved hanger means. In partlcular lt ls an object o~ the invention ko provide a bag wher~in the hanyer means are easily and convenlently incorporated into khe bag and can have high strength. A further objeck cf the invention is an improved way of making a hang bag having improved hanger means.
SummarY of the Invention A hang bag according to the invention comprises (1) a body portlon in which goods may be packaged and that is a double side weld bag formed of shrinkable film that is folded at a fold to define front and rear panels that are sealed along each slde and that can be sealed across the end distant the fold and the external surfaces of which have been corona treated, and (2) a . . ~
;7~
hanger portion that extends at the said fold away from the body portion and ~hat comprises a face layer of heat-shrinkable ~ilm that is laminated to and extends from the said face panel, a rear layer of heat-shrinkable fllm that is laminated to and extends from the said rear panel, and a relnforclng member of non-æhrlnk film that is laminated between ~he two said layers and that includes or can include a perforation by which the bay may be hung from a peg and wherein the entire inwardly facing surfaces of the said face and rear layers have been corona treated and both surfaces of the non-shrinkable film have been CQrona treated, whereby the lamination of facing, corona treated, surfaces is improved.
After insertion of the goods in the body portlon the panels are also sealed across the end distant from the fold. The said face and rear layers of shrinkable fil~ securely extend from, respec~ively, the sald face and rear panels as a result of being laminated to the~e panels and exkending from them.
In another aspect the invention a hang bag is made b~ a method comprlsiny providing a flattened double-side weld bag having face and rear panels and formed by folding the shrinkable material about a fold and that haæ corona treated outer faces, providing a face layer of shrinkable fllm ~hat is corona ~rea~ed on its rear surface, providing a rear la~er of shrinkable film that is corona treated on its face surface, providing a reinforcing non-shrinkable film that is corona treated on both surfaces, providing an assembly of the shrinkable film layers substantially co-extensive wlth each other and with the ~
;i'7.~
64535-~59 relnforcing film sandwiched between ~hem at one end and with the side weld bag sandwiched between them at the other end with the said Pold of the side weld bag adjacent the reinforcing film, and 3a , `~' ,;
;'7 ~
laminating the faciny corona treated surfaces of the assembly.
The invention also provides filled hang bags wherein goods are packaged in a hang bag as described above and ~he body portion is shrunk around the goods and sealed around its entire periphery.
Description of the Drawinys The invention may be better understood by reference to the accompanying drawings which show one example of the invention and wherein ~ igure l is a plan vi~w of a hang bag according to the invention;
Figure 2 is a cross-section on the line II-II in Figure l (not to scale); and Figure 3 is a plan view of the bag shown in Figure l after filling, shrinking and heat sealing.
Description of the Preferred Embodiments The hang bag shown in the drawings comprises a body portion l and a hanger portion 2. The body portion l is formed of front and rear panels 3 and 4. Each of the panels is formed of heat shrinkable film 5. These panels are sealingly joined across the width of the end 6 closest to the hanger portion.
It is particularly preferred that the body portion should be a double-side weld bag, in which event the bag is formed by folding the sheet material 5 upon itself to define the front and rear panels 3 and 4 and this fold serves as the join at the end 6. The assembly of the side weld bag is then completed by heat sealing the faces of the panels 3 and 4 to one another along the sides of the panelsj- to form side welds 7 and 8. This heat sealing is generally effected before the goods are packaged in the bag, the bag being left, before usel open at the remaining end 9 to permit the insertion of the goods that are to be packaged in the body.
In an alternative, and less preerred, construction other forms of body portions 1 may be utilised. For instance the body portion may be formed of a single side seal bag~ Thus instead of having a side weld 7 that side of the bag may be provided by a fold in the sheet material and the end 6 and the opposite side 3 may be sealingly joined by heat welding, end 9 again being left open.
Broadly, the body portion when flat will normally consist of substantially rectangular front and rear panels that are sealingly joined (either as a result of welding or as a result of folding a continuous sheet material) across one end and along two sides, with the intention that the remaining end can be heat sealed, so as to complete sealing of the entire periphery, after the goods that are to be packaged have been inserted into the bag.
The hanger portion extends at the end 6 away from the body portion 1 and comprises a face layer lO of shrinkable film extending away from the face panel 3, and a rear layer 11 of shrinkable film extending away from the rear panel 4.
The hanger portion also includes a reinforcing member 12 that is secured between the layers lO and 11.
This reinforcing member 12 is provided with a perforation 13 by which the bag may be hung from a peg. This perforation may be in the reinforcing member 1 before it is sandwiched between the layers lO and 11, in which event they must subsequently be perforated in the same place, but more usually the perforation is formed after laminating-the layers lO, 12 and 11. It may be provided by any convenient piercing or punching means. It may be provided while the bag is flat or it may be provided after the bag has been filled with the goods that are to be packaged. For instance the perforation may be formed by `forcing the hanger portion of a filled bag on to a _____ .
.
, 6 ~ Z ~
spike from which the bag is to be hung for display purposes.
It is necessary that the layers lO and 11 should extend securely from, respectively, the face panels 3 and 4 in order that the hanger portion does not pull away from the body portion. When, as is preferred, the body portion comprises a double side weld bag the secure extension of the layers from the panels can be achieved by laminating film 14 of which the layers are formed to the material 5 of which the panels are formed over a substantial length of the body portion. Generally the film 14 is laminated to the film 5 over a length of at least one quarter, usually . at least one third and sometimes at least one half of the length of the body portion from the end 6 towards the end 9.
In a less preferred construction, when the body portion is a single side seal bag, the secure extension of .the face and rear layers can be provided by a continuation of the sheet material 5 beyond the end 6.
For` instance a double layer of sheet material 5 may extend over the entire desired length of the hang bag, a transverse seal may be provided between the layers at 6 to provide the end of the body portion and the reinforcing member 12 may be sandwiched between the 2S layers. Securement of the reinforcing member 12 between the layers is preferably promoted by corona treatment.
In the.preferred constructionJ .using a double side weld bag as illustrated in Figure 1, lamination of the face and rear layers to, respectively, the face and rear panels is promoted by corona treatment. The reinforcing member is .preferably formed of non-shrinkable film and the securement of this between the face and rear layers is also preferably promoted by corona treatment.
Preferably the face and rear panels 3 and 4 are subjected :to corona treatment either over their entire ' ~
area or over the part that is to be laminated with sheet material 14. This sheet material is corona treated over its entire inner surface. The reinforcing film 12 is corona treated over its two outer surfaces. All the facing corona treated surfaces are laminated to one another. Thus sheet 14 is laminated to sheet material 5 over a substantially part of the length of the bag extending from the end 6, the sheet material 14 is laminated to the upper and lower surfaces of the reinforcing member 12 and the adjacent faces of the layer 15 are laminated to one another at the end of the hanger portion 15.
The corona treatment may be conducted after laying the various components cf the hang bag in position as shown in, for instance, Figure 2 or the individual components may be subjected to corona treatment and then brought together and laminated. The corona treatment and lamination may be conducted in known manner using apparatus and methods as described in, for instance, ~nited States patent specifica~ions 3,346,480, 3,823,061 or 4,120,716. Alternatively a system as described in U.S. patent specification 3,900,538 may be utilised.
The provision of a double side weld bag as shown in the drawings may be conducted in conventional manner, for instance as described in U.S. patent specification no.4,276,330. ~lternatively a bag having a single side weld 8, a transverse weld 6 and a fold 7 may be provided in known manner.
The bag is generally manufactured and supplied flat, as shown in Figures 1 and 2 (but with or without the perforation -13) and the user then fills it with the goods to be packaged, for instance sausagemeat or other foodstuffs, and then causes shrinking of the bag to a tight fit around the foodstuffs and heat sealing of the end 9, as shown at 16, all in conventional manner. ~he 7~
extent to which the hanyer portion will also shrink will depend upon the relative strengths of the reinforcing film 12 and the face and rear layer~ 10 and 11.
Generally the reinforcing film 12 is resistant to shrinking and distortion in which event it will, as shown in Figure 3, undergo little or no reduction in dimensions. For instance-there may be some small folds as shown diagrammatically at 17 or the dimensions of the hanger portion may remain unchanged.
The shrinkable film of which the body portion is made may be any thermoplastic heat shrinkable film having properties suitable for packaging of the goods that are to be enclosed in the body portion. Often it is a laminate. It may include a vapour impermeable barrier as one of its layers. Particularly suitable material is described in United States patent no.3,741,253.
Typically it is 0.005 to 0.05 mm thick, often 0.01 to 0.03 mm th-ck. The face and rear layers 10 and 11 may be of the same thermoplastic heat-shrinkable material or, if they are laminated on to the body portion as shown in Figure 2, they can if desired be of different heat-shrinkable material. Typically they will then be of a single ply material.
The reinforcing film 12 is preferably formed of non-shrink film, for instance of polyethylene or polypropylene, and typically it is 0.02 to 0~2 mm thick, often about 0~05 to 0.1 mm thick.
Although the hanger portion is shown as being rectangular and of the same width as the body portion it can be of a lesser or greater width and, in particular, it can be s-haped, for instance as shown by the dashed lines in Figure 1. The layers 10 and 11 and reinfoxcement 12 may be shaped before lamination or the hanger may be cut to shape after lamination.
9 ~7~
As a result of the invention it is possible, for the first time, easily to provide a hang bag having a strong and very securely attached hanger and that is readily accessible and does not tend to cling to the body portion.
The hang bag may be provided with decoration or informative printing in conventional manner.
Conveniently however such printing is on the shrinkable film extending bevond the body portion, i.e., on the layers lO and/or 11. This film may be surface printed or reverse printed, and thus printing may be trapped between the film 14 and either the film 5 or the film 12.
Hang Bags Field of the Invention This invention relates to the construction and production of a hang b~g, that is to say a bag formed of thermoplastic material in which goods rnay be packaged and provided with a hanger by which the bag may be hung from a peg in order to display the goods. In particular the inven~ion relates to a hang bag formed of shrinkable film and provided with an improved hanger construction.
Backqround of the Invention Food and other goods are frequently packaged for retail pur~oses in shrinkable film that is then shrunk around the goods. The film may initially be in the form of a bag in which event this is open at one end to permit the insertion of the goods and is then heat sealed and shrunk around the goods. It is often desirable to be able to hang the bag containing t~e goods from a peg, for instance a hook or the peg of a pegboard, for display in a supermarket. Tt is therefore necessary to provide hanger means by which the bag can be hung from a hook.
The hanger means can be an external hanger into which the bag fits, for instance a cone-shaped cut out of paper or other material. Preferably however the bag includes hanger means as part of the bag.
In one system a strap or hook is permanently secured to the bag. For instance in United States patent 3,207,300 a strap is heat sealed to a bag.
~nfortunately it is difficult to obtain an adequately reliable seal hetween many externally applied straps and bags. Also it is not easy to construct the strap so that it can be sealed to the bag and will readily stand away from the bag, to permit easy hanging on a peg, during use.
., ' ' ' i'7.~
6~536-559 In German GBM 8224353.0 thls problem ls overcome by forming the strap of non-shrinkable material so that when the bag is shrunk around the goods the strap stands clear of the bag.
However it is still necessary ~o take par~icular precautions if an adequa~e seal is to be achieved between the strap and the bag.
In another system the hanger means comprises a hole punched in the bag material at one end of the bag. Unfortllnately the bag material is liable to tear around the hole. Localised tearing can be minlmised by providing a metal or plastic eyelet as reinforcement around the hole but it is inconvenient to secure this reinforcement and the sheet material between the reinforcement and the filled part of the bag is still liable to tear.
It is therefore an object of the invention to provide a hang bag comprising a bag of shrinkable fllm in whlch goods may be packaged and provlded with lmproved hanger means. In partlcular lt ls an object o~ the invention ko provide a bag wher~in the hanyer means are easily and convenlently incorporated into khe bag and can have high strength. A further objeck cf the invention is an improved way of making a hang bag having improved hanger means.
SummarY of the Invention A hang bag according to the invention comprises (1) a body portlon in which goods may be packaged and that is a double side weld bag formed of shrinkable film that is folded at a fold to define front and rear panels that are sealed along each slde and that can be sealed across the end distant the fold and the external surfaces of which have been corona treated, and (2) a . . ~
;7~
hanger portion that extends at the said fold away from the body portion and ~hat comprises a face layer of heat-shrinkable ~ilm that is laminated to and extends from the said face panel, a rear layer of heat-shrinkable fllm that is laminated to and extends from the said rear panel, and a relnforclng member of non-æhrlnk film that is laminated between ~he two said layers and that includes or can include a perforation by which the bay may be hung from a peg and wherein the entire inwardly facing surfaces of the said face and rear layers have been corona treated and both surfaces of the non-shrinkable film have been CQrona treated, whereby the lamination of facing, corona treated, surfaces is improved.
After insertion of the goods in the body portlon the panels are also sealed across the end distant from the fold. The said face and rear layers of shrinkable fil~ securely extend from, respec~ively, the sald face and rear panels as a result of being laminated to the~e panels and exkending from them.
In another aspect the invention a hang bag is made b~ a method comprlsiny providing a flattened double-side weld bag having face and rear panels and formed by folding the shrinkable material about a fold and that haæ corona treated outer faces, providing a face layer of shrinkable fllm ~hat is corona ~rea~ed on its rear surface, providing a rear la~er of shrinkable film that is corona treated on its face surface, providing a reinforcing non-shrinkable film that is corona treated on both surfaces, providing an assembly of the shrinkable film layers substantially co-extensive wlth each other and with the ~
;i'7.~
64535-~59 relnforcing film sandwiched between ~hem at one end and with the side weld bag sandwiched between them at the other end with the said Pold of the side weld bag adjacent the reinforcing film, and 3a , `~' ,;
;'7 ~
laminating the faciny corona treated surfaces of the assembly.
The invention also provides filled hang bags wherein goods are packaged in a hang bag as described above and ~he body portion is shrunk around the goods and sealed around its entire periphery.
Description of the Drawinys The invention may be better understood by reference to the accompanying drawings which show one example of the invention and wherein ~ igure l is a plan vi~w of a hang bag according to the invention;
Figure 2 is a cross-section on the line II-II in Figure l (not to scale); and Figure 3 is a plan view of the bag shown in Figure l after filling, shrinking and heat sealing.
Description of the Preferred Embodiments The hang bag shown in the drawings comprises a body portion l and a hanger portion 2. The body portion l is formed of front and rear panels 3 and 4. Each of the panels is formed of heat shrinkable film 5. These panels are sealingly joined across the width of the end 6 closest to the hanger portion.
It is particularly preferred that the body portion should be a double-side weld bag, in which event the bag is formed by folding the sheet material 5 upon itself to define the front and rear panels 3 and 4 and this fold serves as the join at the end 6. The assembly of the side weld bag is then completed by heat sealing the faces of the panels 3 and 4 to one another along the sides of the panelsj- to form side welds 7 and 8. This heat sealing is generally effected before the goods are packaged in the bag, the bag being left, before usel open at the remaining end 9 to permit the insertion of the goods that are to be packaged in the body.
In an alternative, and less preerred, construction other forms of body portions 1 may be utilised. For instance the body portion may be formed of a single side seal bag~ Thus instead of having a side weld 7 that side of the bag may be provided by a fold in the sheet material and the end 6 and the opposite side 3 may be sealingly joined by heat welding, end 9 again being left open.
Broadly, the body portion when flat will normally consist of substantially rectangular front and rear panels that are sealingly joined (either as a result of welding or as a result of folding a continuous sheet material) across one end and along two sides, with the intention that the remaining end can be heat sealed, so as to complete sealing of the entire periphery, after the goods that are to be packaged have been inserted into the bag.
The hanger portion extends at the end 6 away from the body portion 1 and comprises a face layer lO of shrinkable film extending away from the face panel 3, and a rear layer 11 of shrinkable film extending away from the rear panel 4.
The hanger portion also includes a reinforcing member 12 that is secured between the layers lO and 11.
This reinforcing member 12 is provided with a perforation 13 by which the bag may be hung from a peg. This perforation may be in the reinforcing member 1 before it is sandwiched between the layers lO and 11, in which event they must subsequently be perforated in the same place, but more usually the perforation is formed after laminating-the layers lO, 12 and 11. It may be provided by any convenient piercing or punching means. It may be provided while the bag is flat or it may be provided after the bag has been filled with the goods that are to be packaged. For instance the perforation may be formed by `forcing the hanger portion of a filled bag on to a _____ .
.
, 6 ~ Z ~
spike from which the bag is to be hung for display purposes.
It is necessary that the layers lO and 11 should extend securely from, respectively, the face panels 3 and 4 in order that the hanger portion does not pull away from the body portion. When, as is preferred, the body portion comprises a double side weld bag the secure extension of the layers from the panels can be achieved by laminating film 14 of which the layers are formed to the material 5 of which the panels are formed over a substantial length of the body portion. Generally the film 14 is laminated to the film 5 over a length of at least one quarter, usually . at least one third and sometimes at least one half of the length of the body portion from the end 6 towards the end 9.
In a less preferred construction, when the body portion is a single side seal bag, the secure extension of .the face and rear layers can be provided by a continuation of the sheet material 5 beyond the end 6.
For` instance a double layer of sheet material 5 may extend over the entire desired length of the hang bag, a transverse seal may be provided between the layers at 6 to provide the end of the body portion and the reinforcing member 12 may be sandwiched between the 2S layers. Securement of the reinforcing member 12 between the layers is preferably promoted by corona treatment.
In the.preferred constructionJ .using a double side weld bag as illustrated in Figure 1, lamination of the face and rear layers to, respectively, the face and rear panels is promoted by corona treatment. The reinforcing member is .preferably formed of non-shrinkable film and the securement of this between the face and rear layers is also preferably promoted by corona treatment.
Preferably the face and rear panels 3 and 4 are subjected :to corona treatment either over their entire ' ~
area or over the part that is to be laminated with sheet material 14. This sheet material is corona treated over its entire inner surface. The reinforcing film 12 is corona treated over its two outer surfaces. All the facing corona treated surfaces are laminated to one another. Thus sheet 14 is laminated to sheet material 5 over a substantially part of the length of the bag extending from the end 6, the sheet material 14 is laminated to the upper and lower surfaces of the reinforcing member 12 and the adjacent faces of the layer 15 are laminated to one another at the end of the hanger portion 15.
The corona treatment may be conducted after laying the various components cf the hang bag in position as shown in, for instance, Figure 2 or the individual components may be subjected to corona treatment and then brought together and laminated. The corona treatment and lamination may be conducted in known manner using apparatus and methods as described in, for instance, ~nited States patent specifica~ions 3,346,480, 3,823,061 or 4,120,716. Alternatively a system as described in U.S. patent specification 3,900,538 may be utilised.
The provision of a double side weld bag as shown in the drawings may be conducted in conventional manner, for instance as described in U.S. patent specification no.4,276,330. ~lternatively a bag having a single side weld 8, a transverse weld 6 and a fold 7 may be provided in known manner.
The bag is generally manufactured and supplied flat, as shown in Figures 1 and 2 (but with or without the perforation -13) and the user then fills it with the goods to be packaged, for instance sausagemeat or other foodstuffs, and then causes shrinking of the bag to a tight fit around the foodstuffs and heat sealing of the end 9, as shown at 16, all in conventional manner. ~he 7~
extent to which the hanyer portion will also shrink will depend upon the relative strengths of the reinforcing film 12 and the face and rear layer~ 10 and 11.
Generally the reinforcing film 12 is resistant to shrinking and distortion in which event it will, as shown in Figure 3, undergo little or no reduction in dimensions. For instance-there may be some small folds as shown diagrammatically at 17 or the dimensions of the hanger portion may remain unchanged.
The shrinkable film of which the body portion is made may be any thermoplastic heat shrinkable film having properties suitable for packaging of the goods that are to be enclosed in the body portion. Often it is a laminate. It may include a vapour impermeable barrier as one of its layers. Particularly suitable material is described in United States patent no.3,741,253.
Typically it is 0.005 to 0.05 mm thick, often 0.01 to 0.03 mm th-ck. The face and rear layers 10 and 11 may be of the same thermoplastic heat-shrinkable material or, if they are laminated on to the body portion as shown in Figure 2, they can if desired be of different heat-shrinkable material. Typically they will then be of a single ply material.
The reinforcing film 12 is preferably formed of non-shrink film, for instance of polyethylene or polypropylene, and typically it is 0.02 to 0~2 mm thick, often about 0~05 to 0.1 mm thick.
Although the hanger portion is shown as being rectangular and of the same width as the body portion it can be of a lesser or greater width and, in particular, it can be s-haped, for instance as shown by the dashed lines in Figure 1. The layers 10 and 11 and reinfoxcement 12 may be shaped before lamination or the hanger may be cut to shape after lamination.
9 ~7~
As a result of the invention it is possible, for the first time, easily to provide a hang bag having a strong and very securely attached hanger and that is readily accessible and does not tend to cling to the body portion.
The hang bag may be provided with decoration or informative printing in conventional manner.
Conveniently however such printing is on the shrinkable film extending bevond the body portion, i.e., on the layers lO and/or 11. This film may be surface printed or reverse printed, and thus printing may be trapped between the film 14 and either the film 5 or the film 12.
Claims (4)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A hang bag that comprises (1) a body portion in which goods may be packaged and that is a double side weld bag formed of shrinkable film that is folded at a fold to define front and rear panels that are sealed along each side and that can be sealed across the end distant the fold and the external surfaces of which have been corona treated, and (2) a hanger portion that extends at the said fold away from the body portion and that comprises a face layer of heat-shrinkable film that is laminated to and extends from the said face panel, a rear layer of heat-shrinkable film that is laminated to and extends from the said rear panel, and a reinforcing member of non-shrink film that is laminated between the two said layers and that includes or can include a perforation by which the bag may be hung from a peg and wherein the entire inwardly lacing surfaces of the said face and rear layers have been corona treated and both surfaces of the non-shrinkable film have been corona treated, whereby the lamination of facing, corona treated, surfaces is improved.
2. A method of making a hang bag comprising providing a flattened double-side weld bag having face and rear panels and formed by folding the shrinkable material about a fold and that has corona treated outer faces, providing a face layer of shrinkable film that is corona treated on its rear surface, providing a rear layer of shrinkable film that is corona treated on its face surface, providing a reinforcing non-shrinkable film that is corona treated on both surfaces, providing an assembly of the shrinkable film layers substantially co-extensive with each other and with the reinforcing film sandwiched between them at one end and with the side weld bag sandwiched between them at the other end with the said fold of the side weld bag adjacent the reinforcing film, and laminating the facing corona treated surfaces of the assembly.
3. A filled hang bag that comprises (1) a body portion in which goods are packaged and that is formed of front and rear panels of thermoplastic film shrunk on to the goods and that are sealingly joined around their entire periphery, and (2) a hanger portion that extends at the said one end away from the body portion and that comprises a face layer of thermoplastic film that securely extends from the face panel, a rear layer of thermoplastic film that securely extends from the rear panel, and a reinforcing member that is secured between the two said layers and that includes a perforation by which the bag may be hung from a peg.
4. A filled hang bag that comprises (1) a body portion in which goods are packaged and that is formed of a side weld bag formed of thermoplastic film that is folded at a fold to define front and rear panels and that is sealed around its other edges and that is shrunk on to the goods, and (2) a hanger portion that extends at the said one end away from the body portion and that comprises a face layer of thermoplastic film that is laminated to and extends from the face panel, a rear layer of thermoplastic film that is laminated to and extends from the rear panel, and reinforcing film that is laminated between the two said layers and that includes or can include a perforation by which the bag may be hung from a peg.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US73437585A | 1985-05-15 | 1985-05-15 | |
| US734,375 | 1985-05-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1267114A true CA1267114A (en) | 1990-03-27 |
Family
ID=24951438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000504860A Expired CA1267114A (en) | 1985-05-15 | 1986-03-24 | Hang bag |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1267114A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5562959A (en) * | 1992-11-03 | 1996-10-08 | W. R. Grace & Co.-Conn. | Print-lock process |
-
1986
- 1986-03-24 CA CA000504860A patent/CA1267114A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5562959A (en) * | 1992-11-03 | 1996-10-08 | W. R. Grace & Co.-Conn. | Print-lock process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4764028A (en) | Hang bags having hanger portion of reinforcing member of non-shrink film laminated between two layers of shrink film | |
| US4713839A (en) | Resealable reusable flexible plastic bag with loop handle | |
| CA1237392A (en) | Smooth walled flexible package | |
| US5112138A (en) | Resealable reusable flexible plastic bag with loop handle | |
| US6033114A (en) | Window bag with polyester lining and method of forming same | |
| US4573203A (en) | Reusable plastic bag with loop handle | |
| US5951453A (en) | Recloseable bag assembly and method of making same | |
| US6224262B1 (en) | Bag with perforated opening and reinforcing patch | |
| US5335996A (en) | Openable bag construction | |
| GB2214487A (en) | Reclosable plastics bags | |
| US20170334626A1 (en) | Easy Open Plastic Bags | |
| US20040050745A1 (en) | Bag for vacuum sealing an item within | |
| US5413412A (en) | Easy open bag | |
| US20200339332A1 (en) | Tamper evident bag | |
| US6029844A (en) | Trash can liner having bag retention strip | |
| US4936456A (en) | Bag arrangement | |
| US6676293B2 (en) | Vinyl wicket bag | |
| US6401924B1 (en) | Device for supporting at least one object, and an associated method of wrapping at least one object that is to be supported by a peg of a display unit | |
| CA1267114A (en) | Hang bag | |
| US3231898A (en) | Apron | |
| JP2000033953A (en) | Gusset bag | |
| US5009515A (en) | Plastic film bag with a multi-layered bight through which a hanger extends and related methods | |
| US5083413A (en) | Method of making plastic film bag with a multi-layered bight through which a hanger extends | |
| CA1240651A (en) | Resealable reusable flexible plastic bag with loop handle | |
| JP3084361B2 (en) | Hooked bag and manufacturing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |