EP1603759B1 - Composite file folder - Google Patents
Composite file folder Download PDFInfo
- Publication number
- EP1603759B1 EP1603759B1 EP04719893A EP04719893A EP1603759B1 EP 1603759 B1 EP1603759 B1 EP 1603759B1 EP 04719893 A EP04719893 A EP 04719893A EP 04719893 A EP04719893 A EP 04719893A EP 1603759 B1 EP1603759 B1 EP 1603759B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- file folder
- reinforcing film
- film
- file
- reinforcing
- 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 - Lifetime
Links
- 239000002131 composite material Substances 0.000 title claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 79
- 239000000758 substrate Substances 0.000 claims description 48
- 238000002372 labelling Methods 0.000 claims description 27
- 239000010410 layer Substances 0.000 claims description 26
- 230000001070 adhesive effect Effects 0.000 claims description 16
- 239000000853 adhesive Substances 0.000 claims description 15
- 239000000976 ink Substances 0.000 claims description 14
- 239000012790 adhesive layer Substances 0.000 claims description 10
- 229920002678 cellulose Polymers 0.000 claims description 8
- 239000001913 cellulose Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000010030 laminating Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000003086 colorant Substances 0.000 claims 2
- 238000005520 cutting process Methods 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000003825 pressing Methods 0.000 claims 1
- -1 polyethylene Polymers 0.000 description 9
- 239000004698 Polyethylene Substances 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 6
- 229920000573 polyethylene Polymers 0.000 description 6
- 238000004064 recycling Methods 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 2
- 229920002301 cellulose acetate Polymers 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000003550 marker Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- 241001061260 Emmelichthys struhsakeri Species 0.000 description 1
- 239000005041 Mylar™ Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Definitions
- the present invention relates to reinforced file folders and in particular, relates to reinforced file folders having improved durability and improved characteristics with respect to writing thereon.
- each file folder is specific to a particular client or subject.
- the file folders have labeling tabs to which subject or client specific labels are secured.
- the file folders can include traditional top labeling tabs or lateral tabs for side tab filing.
- Canadian Patent 1,197,155 discloses a reinforced file folder where the labeling tab of the file folder has been reinforced with a mylar reinforcing film. This reinforcing film is applied along one edge of the folder length and the edge of the folder is then folded upon itself and adhered. The folder edge is then die cut to form the labeling tab.
- This labeling tab has a reinforcing film on the exterior thereof and the film provides a smooth surface for receiving pressure sensitive labels.
- the reinforcing film has a polyethylene outer surface and an underlying thermally activated polypropylene layer.
- the file folder according to this prior patent has proven particularly successful in reinforcing the file folder adjacent the labeling tab such that the tab is not particularly prone to damage. Multi layer pressure sensitive labels having a similar polyethylene outer layer are commonly used to improve the appearance and durability of the labels.
- the front and/or back surfaces of the file folder are used to provide handwritten summary type information or a log of how the file has been used or reviewed.
- the front of the file can be used for signatures of the various people who have withdrawn the file at a particular point in time or can include more detailed client information which can be recorded on the file folder.
- a composite file folder comprises a front panel, a back panel and a labeling tab along one edge of the back panel with the back and front panels being integrally joined along one edge with a fold axis between the panels.
- the folder has a paper substrate support layer with a reinforcing film adhered to the exterior surfaces of the front and back panels across the fold axis and applied either side of the labeling tab.
- the reinforcing film is a multi layer film having a matte finish outer surface and an underlying adhesive inner layer adhered to the folder.
- the reinforcing film covers at least 50% of the outside surface of the file folder. This reinforcing film provides an excellent surface for receiving printed indicia on the matte finish outer surface.
- the printed indicia is to be permanently bonded to the finished surface, a curable ink can be used.
- the matte finish allows user recordal of indicia using a ballpoint pen or lead pencil. This indicia is not prone to smudging, however, it can be manually removed if desired using a traditional rubber eraser.
- the file folder can be reconditioned by removing of any indicia which is specific to the former use of the file folder.
- the reinforcing film not only reinforces the tab but also provides a reconditionable writing surface on the file folder.
- the outer layer of the reinforcing film is a cellulous base material.
- the preferred film is an acetate.
- the reinforcing film is a breathable cellulose base material.
- the present invention is also directed to a file folder comprising a body of paper stock and an exterior film substrate secured to the paper stock.
- the file folder has a front face and a rear face joined along a fold line.
- the front face is of a length to cooperate with the back face to form a labeling tab which extends beyond a marginal edge of the front face.
- the film substrate is secured to cover the exterior surface of the file folder and to cover both sides of the labeling tab.
- the film substrate comprises an underlying adhesive layer and an overlying cellulous based layer where the adhesive layer secures the film to the paper stock.
- the cellulous based layer has a treated surface finish which varies the depth of the overlying cellulous layer. This treated surface finish has superior properties with respect to receiving and retaining ink from ballpoint pens or receiving lead from pencils.
- the film substrate is at least partially translucent and the paper stock has been printed thereon with the print on the paper stock being visible through the film substrate.
- the paper stock has been printed with general information and/or category information to be used in assisting a user to enter specific summary information with respect to the contents of the file folder.
- the specific summary information is manually written or printed on the surface of the film substrate.
- the preferred printing on the film for permanent marking is printed using a printer using UV curable ink. Printing on the surface provides excellent clarity.
- the manually written or printed indicia on the surface of the film substrate are removable using a suitable eraser.
- the surface treated cellulous based layer provides an excellent receptor surface which provides strong adhesion with pressure sensitive labels such that the labels remain adhered to this layer during normal use of the file folder while allowing these labels to be removed if the file is to be reconditioned for a new application.
- the paper stock 2 shown in Figure 1 passes beneath a printing roller 4 which prints the indicia 6 on the surface of the paper stock.
- this printed indicia 6 is applied only to the outside surface of the front face of a file folder, however, it can be applied to both the front and back surfaces.
- the paper stock 2 can be printed at least on the outer surface to define certain general category type information that is desirable for a particular purchaser or industry.
- the paper stock is a cellulous material and reacts to different levels of humidity. In the past, changes in humidity have lead to label adhesion problems.
- Previously used polyethylene films provide reinforcement and better label securement. The ability to print indicia or manually write on this film is poor. This type of film has a smooth surface to enhance securement but manually written indicia tends to smudge.
- Figure 2 shows a file folder blank which has been printed on the exterior surface with industry specific information.
- This file folder has particular application for government, legal, financial, medical and insurance industries where writing on the surface of the file folder is advantageous.
- the increased desirability in combination with the ability to custom print on or under the film makes the file folder suitable for financial, manufacturing, education or resource applications.
- FIG 3 shows the application of a reinforcing film substrate 12 applied to the paper stock 2 over the printed indicia 6 using the application roller 10.
- the film substrate 12 is preferably a transparent cellulous based material such that the printed indicia 6 are visible through the film.
- the film has a treated surface, preferably a matte finish 18 which provides an excellent surface for temporarily receiving user recorded information on the surface of a file folder.
- the application of the reinforcing film substrate 12 is simplified by having the edge 15 of the film aligned with the edge 17 of the paper stock 2.
- the opposite edge 19 of the reinforcing film falls slightly short of the opposite edge 21 of the paper stock. With this arrangement, the reinforcing film substrate 12 is aligned with the edge 17 and is within the area of the paper stock.
- the reinforcing film can also be a polyethylene layer with a matte or textured surface having an appropriate adhesive for securement to the paper substrate.
- a heat activated polypropylene layer or a U.V. curable adhesive function satisfactorily.
- Reinforcing films having a pressure sensitive adhesive and a silicon release film are not appropriate.
- the covered paper stock has a small border edge 14 as shown in Figure 4 which is not covered by the reinforcing film substrate 12. This edge of the paper stock is folded rover upon itself and as such, the border edge 14 will be protected within the file folder.
- FIG. 5 shows the printed paper stock 2 with the film substrate 12 secured thereto and the paper stock folded upon itself to produce the reinforced edge 20.
- the film substrate has an outer breathable layer and a lower adhesive layer.
- the adhesive layer is thermally activated by heat being applied to the breathable layer using the roller 10 which raises the temperature of the films to activate the underlying adhesive layer without damaging the upper layer.
- cellulous based reinforcing film is secured to the paper stock.
- the cellulose acetate reinforcing film functions particularly well with an ethylene vinyl acetate (EVA) adhesive.
- EVA ethylene vinyl acetate
- Figure 6 is similar to Figure 5 , however, the combined paper stock and film has been die cut to form a file folder 23 with a front panel 23a and a rear panel 23b.
- This file folder 23 has a reinforced edge 22, a labeling tab 24 and a fold line 28.
- the file folder has the reinforcing film substrate secured to the exterior surfaces of the file folder and wrapped about the labeling tab 24. This arrangement reinforces the labeling tab 24, reinforces the junction 25 between the labeling tab 24 and the reduced edge 27 and provides a file folder having excellent durability.
- the exterior surface of the file folder 23 has the various permanent indicia 6 visible through the film.
- the film has been provided with a recessed surface finish 18 which is typical of a matte finish.
- the matte finish allows written indicia 32 to be retained on the exterior of the reinforcing film 12. These indicia if written with a pencil, ballpoint pen or Sharpie TM permanent marker demonstrate excellent durability during normal use of a file folder.
- the matte finish 18 provides recesses in the surface finish which serves to retain the ink or lead rendering these indicia less prone to smudging or accidental removal during normal use of the file. This information can be conveniently removed using a typical gum eraser 34.
- the matte finish 18 is also present on the labeling tab 24. Other writing tools can also be tested and used if appropriate. Pressure sensitive adhesive labels generally shown as 36 can be secured by the user or by the manufacturer according to the specific requirements of a user.
- the matte finish 18 provides strong adhesion of the pressure adhesive labels to the file folder. This is particularly desirable as these labels must continue to adhere to the file folder during the normal use and life of the file folder. Furthermore, it has been found that these pressure sensitive labels 36 can be removed by the user by peeling of the labels from the matte finish 18. It is believed the recessed surface of the reinforcing film provides excellent adhesion while still allowing manual removal of the labels if desired. The film also acts as an excellent receptor surface for labels having a cold liquid glue adhesive. Strong adhesion is achieved while still allowing manual removal of the labels. Other adhesives may also be suitable.
- a cellulose based film and appropriate adhesive allows for moisture exchange through the film similar to the paper stock. This provides advantages with respect to adhesion and retention of labels. Furthermore, the cellulous based film folds or creases in a manner similar to paper stock. The tendency of the film to return from a folded to a flat condition is reduced.
- the file folder can be reconditioned or reused for a subsequent application. It has been found that some industries, such as the medical or insurance industries, reuse file folders by removing the prior contents of the file folders. Under these circumstances, it is desirable to remove all existing labels such as labels 36 applied to the labeling tab and to remove any printed indicia 32 from the surface of the reinforcing film.
- the file folder as previously described allows this to occur easily and allows new labels to be applied to the labeling tab 24. This avoids labeling over previous labels which can cause difficulties as the adhesive properties will have changed.
- labels 36 will have a different surface finish than the surface finish 18. Removal of the labels avoids any issues with respect to poor adhesion due to changing characteristics of the original adhesive labels.
- the reinforcing film can be used for top tab folders and side tab folders.
- Some industries use a file folder having both top and side tabs and the film is applied about both tabs.
- Film applied to both inside and outside surfaces of the file folder are suitable for certain high demand or wear applications. With the reinforcing film applied to both interior and exterior surfaces, the file folders are easily cleaned.
- These file folders have particular application for demanding environments such as project management field files.
- the oil industry requires a durable file to withstand use by several users in a relatively "dirty" environment. Oil, grease and dirt are more easily removed from the exterior of the film. Laminating on both the inside and outside of the file folder increases durability and provides improved properties with respect to demanding applications.
- the reinforcing film substrate 12 is preferable translucent to allow the indicia 6 to be visible through the substrate.
- This type of arrangement is particularly useful for large volume users where it is practical to have custom manufacture of the file folders. For many applications it would be desirable to have such a customized file folder for users where the volume is considerably less. Under these circumstances, the indicia 6 are not printed on the paper substrate 2.
- the file folders will be produced without the printed indicia 6 and thus a blank reinforced file folder will result..
- This blank reinforced file folder can be produced with the same economies of scale as a custom file folder in that large runs can be used.
- the finished file folder is processed through a thermal printer, a printer using an ultraviolet curable ink or other suitable printer to apply similar indicia 6 directly on the surface of the reinforcing substrate.
- a curable permanent ink such as a curable UV ink, can be used and as such, the finished reinforced file folders can be customized with the new indicia permanently secured to the reinforcing film substrate. This procedure can also be used for large volume applications.
- a printing arrangement can be programmed to provide the desired indicia on the exterior face of the reinforced file folders.
- the printing step can be postponed until the customized order is received.
- the file folder is suitable for repeated use or has extended life and durability.
- the sectional view of Figure 8 shows a paper substrate 2 which has a reinforcing film 12 applied to both the inside and the outside of the paper substrate 2.
- the reinforcing films 12 are applied to both surfaces such that the inside and outside of the file folder is reinforced.
- the paper substrate 2 can be made of a desirable paper stock and reinforced with the films 12.
- a paper stock 14 reinforced with the films 12 provides excellent durability and a life similar to a much heavier paper stock file folder.
- a file folder made of paper stock 16 has excellent durability, however, the cost of the paper stock is relatively high. Similar life can be provided merely using a thinner paper stock such as paper stock 14 and applying the reinforced film to at least one surface or on both surfaces of the paper stock.
- a file folder has similar properties with respect to durability and expected life, while providing other desirable characteristics with respect to convenient removal of client specific information and can be produced at a similar or lower cost.
- the breathable cellulose based film allows application of the film to opposite sides of the substrate.
- the film provides extended folder life expectancy or similar life expectancy but using a lighter paper stock.
- Most file folders have a paper stock thickness of 0,25 to 0,41 mm (10 to 16 thousandths of an inch).
- a particularly desirable reinforcing film is made of cellulose acetate and is available in different thicknesses, usually less than 15,2 ⁇ (0,6 mils).
- This film in combination with the paper substrate provides a file folder having good durability as well as the desirable features previously desired.
- This film is recyclable in a manner similar to paper stock.
- the matte upper surface finish is preferred to allow manual writing thereon and good adhesion with printable inks.
- the cellulose based film is easily coloured to consistent standards.
- the manufacture of the folder can easily and quickly change over from one colour file folder to a different coloured file folder by changing the colour of the reinforcing film.
- the paper stock remains unchanged and can be bought in large quantities. With coloured reinforcing film, printing occurs on top of the film. This colour coding of file folders produces folders which are less prone to colour fade and have increased colour durability.
- the cellulose based film reinforced file folder can advantageously be used with composite layered labels where the upper layer of the labels is a cellulous based film.
- recycling of the file folder is simplified as all components are of a cellulose based material or of a material easily recycled during recycling of a paper substrate material.
- the reinforced file folder having a cellulous based film has been described with respect to covering a majority of the front and back panels with the cellulous based film. It is also beneficial to use this cellulose based film having a matte finish on a labeling tab as superior labeling surface. Such a product provides the required durability and label retention properties with rendering the file folder more suitable for high quality recycling.
- the file folder with the recyclable film allows erasing of pen, marker or pencil markings, is water resistance, reduces paper cuts, is dirt resistance and is easily cleaned to improve hygiene.
- Curable ink is not removable with an eraser and as such can be used for more permanent identification. Printing on the acetate reinforcing film using an ultra violet curable ink provides permanent marking and great clarity. This ink also cures quickly allowing fast production rates.
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Description
- The present invention relates to reinforced file folders and in particular, relates to reinforced file folders having improved durability and improved characteristics with respect to writing thereon.
- It remains essential, in many industries to have an effective manual filing system for maintaining of records. These filing systems are based on file folders where each file folder is specific to a particular client or subject. The file folders have labeling tabs to which subject or client specific labels are secured. The file folders can include traditional top labeling tabs or lateral tabs for side tab filing.
- Canadian Patent
1,197,155 discloses a reinforced file folder where the labeling tab of the file folder has been reinforced with a mylar reinforcing film. This reinforcing film is applied along one edge of the folder length and the edge of the folder is then folded upon itself and adhered. The folder edge is then die cut to form the labeling tab. This labeling tab has a reinforcing film on the exterior thereof and the film provides a smooth surface for receiving pressure sensitive labels. The reinforcing film has a polyethylene outer surface and an underlying thermally activated polypropylene layer. The file folder according to this prior patent has proven particularly successful in reinforcing the file folder adjacent the labeling tab such that the tab is not particularly prone to damage. Multi layer pressure sensitive labels having a similar polyethylene outer layer are commonly used to improve the appearance and durability of the labels. - In many industries such as the medical industry or the insurance industry, the front and/or back surfaces of the file folder are used to provide handwritten summary type information or a log of how the file has been used or reviewed. The front of the file can be used for signatures of the various people who have withdrawn the file at a particular point in time or can include more detailed client information which can be recorded on the file folder. To assist in providing an orderly recording of information, it has been known to print various panels of the file folder with category type information to provide a structure or template for the entering of information.
- For some industries, it is desirable to reuse file folders and it is also known to provide a full plastic or plastic composite file folder for repeated use. Plastic file folders have increased durability, however, the cost is significantly higher and the file folders have some undesirable characteristics. Full plastic file folders do not stack as well as paper file folders. The cost of plastic file folders is also considerably higher and these folders have not been readily accepted in the marketplace. It would be desirable to provide a file folder which has improved characteristics with respect to repeated use while maintaining the desirable characteristics of traditional paper stock file folders.
- Furthermore, recycling of reinforced file folders is difficult due to the polyethylene and polypropylene layers of the reinforcing film. In some applications, the widely diverging properties of the file folder paper stock and the plastic reinforcing film can cause manufacturing or application difficulties. It is important not to use a release agent, such as silicone, on the upper polyethylene layer. Such a release layer creates problems with respect to label adhesion.
- A composite file folder according to the present invention comprises a front panel, a back panel and a labeling tab along one edge of the back panel with the back and front panels being integrally joined along one edge with a fold axis between the panels. The folder has a paper substrate support layer with a reinforcing film adhered to the exterior surfaces of the front and back panels across the fold axis and applied either side of the labeling tab. The reinforcing film is a multi layer film having a matte finish outer surface and an underlying adhesive inner layer adhered to the folder. The reinforcing film covers at least 50% of the outside surface of the file folder. This reinforcing film provides an excellent surface for receiving printed indicia on the matte finish outer surface. If the printed indicia is to be permanently bonded to the finished surface, a curable ink can be used. In addition, the matte finish allows user recordal of indicia using a ballpoint pen or lead pencil. This indicia is not prone to smudging, however, it can be manually removed if desired using a traditional rubber eraser. With this arrangement, the file folder can be reconditioned by removing of any indicia which is specific to the former use of the file folder. Thus the reinforcing film not only reinforces the tab but also provides a reconditionable writing surface on the file folder.
- In a preferred aspect of the invention the outer layer of the reinforcing film is a cellulous base material. The preferred film is an acetate.
- In a further aspect of the invention, the reinforcing film is a breathable cellulose base material.
- The present invention is also directed to a file folder comprising a body of paper stock and an exterior film substrate secured to the paper stock. The file folder has a front face and a rear face joined along a fold line. The front face is of a length to cooperate with the back face to form a labeling tab which extends beyond a marginal edge of the front face. The film substrate is secured to cover the exterior surface of the file folder and to cover both sides of the labeling tab. The film substrate comprises an underlying adhesive layer and an overlying cellulous based layer where the adhesive layer secures the film to the paper stock. The cellulous based layer has a treated surface finish which varies the depth of the overlying cellulous layer. This treated surface finish has superior properties with respect to receiving and retaining ink from ballpoint pens or receiving lead from pencils.
- According to an aspect of the invention, the film substrate is at least partially translucent and the paper stock has been printed thereon with the print on the paper stock being visible through the film substrate.
- In a further aspect of the invention, the paper stock has been printed with general information and/or category information to be used in assisting a user to enter specific summary information with respect to the contents of the file folder. The specific summary information is manually written or printed on the surface of the film substrate. The preferred printing on the film for permanent marking is printed using a printer using UV curable ink. Printing on the surface provides excellent clarity.
- In yet a further aspect of the invention, the manually written or printed indicia on the surface of the film substrate are removable using a suitable eraser.
- According to yet a further aspect of the invention, it has been found that the surface treated cellulous based layer provides an excellent receptor surface which provides strong adhesion with pressure sensitive labels such that the labels remain adhered to this layer during normal use of the file folder while allowing these labels to be removed if the file is to be reconditioned for a new application.
- Preferred embodiments of the invention are shown in the drawings, wherein:
-
Figure 1 is a perspective view showing printed indicia being applied to a paper substrate; -
Figure 2 is a perspective view similar toFigure 1 with the various printed indicia applied to the substrate; -
Figure 3 is a perspective view showing the application of a reinforcing composite film substrate to the paper stock; -
Figure 4 is an end view showing the reinforcing composite film applied and secured to the paper stock; -
Figure 5 is a perspective view of the paper stock with the film applied thereto and one edge of the paper stock folded and secured to itself; -
Figure 6 shows a finished file folder; -
Figure 7 is a perspective view of a finished file folder which includes specific information which has been written on the exterior of the file folder; and -
Figure 8 is a partial sectional view through a paper substrate which has had reinforcing film applied by their side thereon. - The
paper stock 2 shown inFigure 1 passes beneath a printing roller 4 which prints theindicia 6 on the surface of the paper stock. Typically this printedindicia 6 is applied only to the outside surface of the front face of a file folder, however, it can be applied to both the front and back surfaces. In some applications, it is desirable to also print the inside surface of a file folder with such information, therefore, thepaper stock 2 can be printed at least on the outer surface to define certain general category type information that is desirable for a particular purchaser or industry. The paper stock is a cellulous material and reacts to different levels of humidity. In the past, changes in humidity have lead to label adhesion problems. Previously used polyethylene films provide reinforcement and better label securement. The ability to print indicia or manually write on this film is poor. This type of film has a smooth surface to enhance securement but manually written indicia tends to smudge. -
Figure 2 shows a file folder blank which has been printed on the exterior surface with industry specific information. This file folder has particular application for government, legal, financial, medical and insurance industries where writing on the surface of the file folder is advantageous. The increased desirability in combination with the ability to custom print on or under the film makes the file folder suitable for financial, manufacturing, education or resource applications. -
Figure 3 shows the application of a reinforcingfilm substrate 12 applied to thepaper stock 2 over the printedindicia 6 using theapplication roller 10. Thefilm substrate 12 is preferably a transparent cellulous based material such that the printedindicia 6 are visible through the film. The film has a treated surface, preferably amatte finish 18 which provides an excellent surface for temporarily receiving user recorded information on the surface of a file folder. As shown inFigure 3 , the application of the reinforcingfilm substrate 12 is simplified by having theedge 15 of the film aligned with theedge 17 of thepaper stock 2. Theopposite edge 19 of the reinforcing film falls slightly short of theopposite edge 21 of the paper stock. With this arrangement, the reinforcingfilm substrate 12 is aligned with theedge 17 and is within the area of the paper stock. - The reinforcing film can also be a polyethylene layer with a matte or textured surface having an appropriate adhesive for securement to the paper substrate. For example, a heat activated polypropylene layer or a U.V. curable adhesive function satisfactorily. Reinforcing films having a pressure sensitive adhesive and a silicon release film are not appropriate.
- This arrangement simplifies securing of the reinforcing
film substrate 12, as alignment of theedges small border edge 14 as shown inFigure 4 which is not covered by the reinforcingfilm substrate 12. This edge of the paper stock is folded rover upon itself and as such, theborder edge 14 will be protected within the file folder. -
Figure 5 shows the printedpaper stock 2 with thefilm substrate 12 secured thereto and the paper stock folded upon itself to produce the reinforced edge 20., The film substrate has an outer breathable layer and a lower adhesive layer. The adhesive layer is thermally activated by heat being applied to the breathable layer using theroller 10 which raises the temperature of the films to activate the underlying adhesive layer without damaging the upper layer. In this way, cellulous based reinforcing film is secured to the paper stock. It is also possible to use a UV curable adhesive or other appropriate adhesives. It is preferable that the adhesive.be environmentally friendly and recyclable or easily separated during recycling of the file folder. The cellulose acetate reinforcing film functions particularly well with an ethylene vinyl acetate (EVA) adhesive. -
Figure 6 is similar toFigure 5 , however, the combined paper stock and film has been die cut to form afile folder 23 with afront panel 23a and a rear panel 23b. Thisfile folder 23 has a reinforced edge 22, alabeling tab 24 and afold line 28. In this case, the file folder has the reinforcing film substrate secured to the exterior surfaces of the file folder and wrapped about thelabeling tab 24. This arrangement reinforces thelabeling tab 24, reinforces thejunction 25 between thelabeling tab 24 and the reducededge 27 and provides a file folder having excellent durability. The exterior surface of thefile folder 23 has the variouspermanent indicia 6 visible through the film. The film has been provided with a recessedsurface finish 18 which is typical of a matte finish. This improves the stacking of the file folders one on top of the other as the matte surface finish provides a higher co-efficient of friction such that the surfaces do not tend to slide one on the other. It also reduces problems associated with static electricity caused by relative movement of the file folders. - Further benefits of this
surface 18 are shown inFigure 7 . The matte finish allows writtenindicia 32 to be retained on the exterior of the reinforcingfilm 12. These indicia if written with a pencil, ballpoint pen or Sharpie™ permanent marker demonstrate excellent durability during normal use of a file folder. Thematte finish 18 provides recesses in the surface finish which serves to retain the ink or lead rendering these indicia less prone to smudging or accidental removal during normal use of the file. This information can be conveniently removed using atypical gum eraser 34. Thematte finish 18 is also present on thelabeling tab 24. Other writing tools can also be tested and used if appropriate. Pressure sensitive adhesive labels generally shown as 36 can be secured by the user or by the manufacturer according to the specific requirements of a user. Thematte finish 18 provides strong adhesion of the pressure adhesive labels to the file folder. This is particularly desirable as these labels must continue to adhere to the file folder during the normal use and life of the file folder. Furthermore, it has been found that these pressuresensitive labels 36 can be removed by the user by peeling of the labels from thematte finish 18. It is believed the recessed surface of the reinforcing film provides excellent adhesion while still allowing manual removal of the labels if desired. The film also acts as an excellent receptor surface for labels having a cold liquid glue adhesive. Strong adhesion is achieved while still allowing manual removal of the labels. Other adhesives may also be suitable. - The use of a cellulose based film and appropriate adhesive allows for moisture exchange through the film similar to the paper stock. This provides advantages with respect to adhesion and retention of labels. Furthermore, the cellulous based film folds or creases in a manner similar to paper stock. The tendency of the film to return from a folded to a flat condition is reduced.
- With the file folders generally shown in
Figure 7 , the file folder can be reconditioned or reused for a subsequent application. It has been found that some industries, such as the medical or insurance industries, reuse file folders by removing the prior contents of the file folders. Under these circumstances, it is desirable to remove all existing labels such aslabels 36 applied to the labeling tab and to remove any printedindicia 32 from the surface of the reinforcing film. The file folder as previously described allows this to occur easily and allows new labels to be applied to thelabeling tab 24. This avoids labeling over previous labels which can cause difficulties as the adhesive properties will have changed. Typically, labels 36 will have a different surface finish than thesurface finish 18. Removal of the labels avoids any issues with respect to poor adhesion due to changing characteristics of the original adhesive labels. - As can be appreciated, the reinforcing film can be used for top tab folders and side tab folders. Some industries use a file folder having both top and side tabs and the film is applied about both tabs. Film applied to both inside and outside surfaces of the file folder are suitable for certain high demand or wear applications. With the reinforcing film applied to both interior and exterior surfaces, the file folders are easily cleaned. These file folders have particular application for demanding environments such as project management field files. For example, the oil industry requires a durable file to withstand use by several users in a relatively "dirty" environment. Oil, grease and dirt are more easily removed from the exterior of the film. Laminating on both the inside and outside of the file folder increases durability and provides improved properties with respect to demanding applications.
- The reinforcing
film substrate 12 is preferable translucent to allow theindicia 6 to be visible through the substrate. This type of arrangement is particularly useful for large volume users where it is practical to have custom manufacture of the file folders. For many applications it would be desirable to have such a customized file folder for users where the volume is considerably less. Under these circumstances, theindicia 6 are not printed on thepaper substrate 2. The file folders will be produced without the printedindicia 6 and thus a blank reinforced file folder will result.. This blank reinforced file folder can be produced with the same economies of scale as a custom file folder in that large runs can be used. To provide the specific customization, the finished file folder is processed through a thermal printer, a printer using an ultraviolet curable ink or other suitable printer to applysimilar indicia 6 directly on the surface of the reinforcing substrate. A curable permanent ink, such as a curable UV ink, can be used and as such, the finished reinforced file folders can be customized with the new indicia permanently secured to the reinforcing film substrate. This procedure can also be used for large volume applications. - With this arrangement, the file folders will be produced in large runs and maintained in inventory. Once a customized order has been received, a printing arrangement can be programmed to provide the desired indicia on the exterior face of the reinforced file folders. Thus, the printing step can be postponed until the customized order is received. In this way, the advantages of having large runs for manufacture of the file folder are achieved while allowing the customization of the file folder to be completed as a secondary step at a later point in time.
- With both of the above arrangements, the file folder is suitable for repeated use or has extended life and durability.
- The sectional view of
Figure 8 shows apaper substrate 2 which has a reinforcingfilm 12 applied to both the inside and the outside of thepaper substrate 2. With this arrangement, the reinforcingfilms 12 are applied to both surfaces such that the inside and outside of the file folder is reinforced. It has been found that thepaper substrate 2 can be made of a desirable paper stock and reinforced with thefilms 12. Apaper stock 14 reinforced with thefilms 12 provides excellent durability and a life similar to a much heavier paper stock file folder. For example, a file folder made of paper stock 16 has excellent durability, however, the cost of the paper stock is relatively high. Similar life can be provided merely using a thinner paper stock such aspaper stock 14 and applying the reinforced film to at least one surface or on both surfaces of the paper stock. This requires the additional cost of the reinforcing film, however, such a file folder has similar properties with respect to durability and expected life, while providing other desirable characteristics with respect to convenient removal of client specific information and can be produced at a similar or lower cost. The breathable cellulose based film allows application of the film to opposite sides of the substrate. The film provides extended folder life expectancy or similar life expectancy but using a lighter paper stock. Most file folders have a paper stock thickness of 0,25 to 0,41 mm (10 to 16 thousandths of an inch). - A particularly desirable reinforcing film is made of cellulose acetate and is available in different thicknesses, usually less than 15,2 µ (0,6 mils). This film in combination with the paper substrate provides a file folder having good durability as well as the desirable features previously desired. This film is recyclable in a manner similar to paper stock. The matte upper surface finish is preferred to allow manual writing thereon and good adhesion with printable inks.
- The cellulose based film is easily coloured to consistent standards. The manufacture of the folder can easily and quickly change over from one colour file folder to a different coloured file folder by changing the colour of the reinforcing film. The paper stock remains unchanged and can be bought in large quantities. With coloured reinforcing film, printing occurs on top of the film. This colour coding of file folders produces folders which are less prone to colour fade and have increased colour durability.
- The cellulose based film reinforced file folder can advantageously be used with composite layered labels where the upper layer of the labels is a cellulous based film. With this combination, recycling of the file folder is simplified as all components are of a cellulose based material or of a material easily recycled during recycling of a paper substrate material.
- The reinforced file folder having a cellulous based film has been described with respect to covering a majority of the front and back panels with the cellulous based film. It is also beneficial to use this cellulose based film having a matte finish on a labeling tab as superior labeling surface. Such a product provides the required durability and label retention properties with rendering the file folder more suitable for high quality recycling.
- The file folder with the recyclable film allows erasing of pen, marker or pencil markings, is water resistance, reduces paper cuts, is dirt resistance and is easily cleaned to improve hygiene. Curable ink is not removable with an eraser and as such can be used for more permanent identification. Printing on the acetate reinforcing film using an ultra violet curable ink provides permanent marking and great clarity. This ink also cures quickly allowing fast production rates.
- Although various preferred embodiments of the present invention have been described herein in detail, it will be appreciated by those skilled in the art, that variations may be made thereto without departing from the scope of the appended claims.
Claims (26)
- A file folder comprising a paper stock substrate (2) folded to form a front panel (23a), a back panel (23b) and a labeling tab (24) along one edge of said back panel, said file folder (23) further including a cellulous based reinforcing film (12) adhered to both a front and rear side of said labeling tab (24) and extending over at least a border region on an exterior surface of said back panel.
- A file folder as claimed in claim 1 wherein said cellulous based reinforcing film (12) is adhered to said paper substrate (2) by a water based adhesive.
- A file folder as claimed in claim 1 or 2 wherein said reinforcing film (12) has a matte exterior finish (18).
- A file folder as claimed in claim 1 wherein said reinforcing film (12) is a multi-layer breathable film having an outer cellulous layer with an underlying adhesive layer adhering said cellulous layer to said paper substrate (4).
- A file folder as claimed in claims 1 through 4 wherein said reinforcing film (12) covers at least 50% of an outside surface of said file folder (23).
- A file folder (23) as claimed in claim 3 including a series of discrete labels (36) adhered to said labeling tab (24), each discrete label (36) including an outer cellulous based film layer.
- A file folder (23) as claimed in claim 6 wherein each discrete label includes water based adhesive layer securing the label to the reinforcing film (12).
- A file folder (23) as claimed in any of claims 1 through 7 wherein said reinforcing film (12) has an exterior textured surface providing improved adhesion with water based adhesives and improved adhesion with cooperating inks.
- A file folder (23) as claimed in claim 8 wherein said reinforcing film (12) extends over and generally covers the exterior surfaces of said front and back panels.
- A file folder (23) as claimed in claim 9 wherein said reinforcing film (12) includes printed indicia (32) on the surface of the reinforcing film (12) for assisting a user in manually recording information on said reinforcing film (12).
- A file folder (23) as claimed in claim 10 wherein said reinforcing film (12) provides an erasable surface for conventional ink and pencil markings.
- A file folder (23) as claimed in claim 1 wherein said reinforcing film (12) covers exterior surfaces of said front and back panels of said file folder (23).
- A file folder (23) as claimed in claim 12 wherein said reinforcing film (12) has an exterior matte finish (18) and provides a receptor surface for receiving adhesive labels thereon and a manual recording surface for receiving ink or pencil markings while allowing manual erasing thereof.
- A file folder (23) as claimed in claim 10 wherein said printed indicia (6) is strongly bonded or adhered to said matte finish (18) outer surface.
- A composite file folder (23) as claimed in claim 1 wherein said reinforcing film (12) is clear and said paper stock (2) includes printing on the surface thereof visible through said reinforcing film (12).
- A composite file folder (23) as claimed in any of claims 1 through 15 wherein said reinforcing film (12) covers at least 75% of the outside surface of said file folder (23).
- A composite file folder (23) as claimed in claim 1 or claim 16 wherein said paper stock (2) includes a coded area on said front and back panels which has been colour printed to provide colour coding of said file folder (23) said coded area is covered by said reinforcing film (12) and visible therethrough.
- A file folder (23) as claimed in any of claims 1 through 17 wherein said paper stock (2) has a thickness in the range of 0,25 to 0,41 mm (10 to 16 thousandths of an inch) and said reinforcing film (12) has a thickness of less than 15,2 µ (6 mils).
- A file folder (23) as claimed in any of claims 1 through 18 wherein said reinforcing film (12) is secured to generally cover both the inside and outside surfaces of said front panel and said back panel.
- A file folder (23) as claimed in any of claims 1 through 19 wherein said file folder (23) has two labeling tabs (24) and said reinforcing film (12) covers both sides of each labeling tab (24).
- A file folder as claimed in any of the claims 1 through 20 wherein said file folder (23) is recyclable.
- A method of manufacturing file folders (23) comprising moving an elongate paper substrate (2) past a laminating station, providing at said laminating station a reinforcing film (12) having a matte finish (18) recording surface of a cellulose base material and an underlying thermal adhesive layer, heating said reinforcing film (12) to activate said thermal adhesive layer, aligning said reinforcing film (12) such that at least one edge of said film overlies one edge of said paper substrate (2), securing said multi-layer reinforcing film (12) to said paper substrate (2) such that said reinforcing generally extends across at least 50% of the width of said paper substrate (2), said reinforcing film (12) being secured to said paper substrate (2) by applying pressure to said recording surface forcing said thermal adhesive layer into intimate contact with said paper substrate (2), folding and adhering said paper substrate (2) to form a reinforced edge (20) with said matte finish (18) recording surface located about said reinforced edge (20), die cutting said reinforced edge (20) to form a series of labeling tabs (24), cutting said substrate (2) across the width thereof to form discrete file folders (23), and folding said-discrete file folders (23) about a hinge line to form front and back panels (23a, 23b) with said labeling tabs (24) on side edges of said back panels (23b) and said reinforcing film (12) to the exterior of said panels (23a, 23b) and across said hinge line (28).
- A method as claimed in claim 22 wherein said reinforcing film (12) is slightly less than the width of said paper substrate (2) and said reinforcing film (12) is maintained in alignment with said paper substrate (2) to be within the width thereof.
- A method as claimed in claim 23 wherein said method includes printing on said paper substrate (2) prior to said laminating station indicia (6) or markings intended to assist in use of the file folder (23) and wherein said reinforcing film (12) is generally transparent and applied over said indicia (6) or markings.
- A method as claimed in claim 24 wherein said method includes printing on said reinforcing film (12) after application of the reinforcing film (12) to said paper substrate (2).
- A method as claimed in claim 22 for manufacturing file folders (23) of different colours comprising maintaining a series of reinforcing films (12) of different colours, selecting the coloured reinforcing film (12) to be applied and thereafter applying said reinforcing film (12).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2421694 | 2003-03-12 | ||
CA2421694A CA2421694C (en) | 2003-03-12 | 2003-03-12 | Composite file folder |
PCT/CA2004/000357 WO2004080727A1 (en) | 2003-03-12 | 2004-03-12 | Composite file folder |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1603759A1 EP1603759A1 (en) | 2005-12-14 |
EP1603759B1 true EP1603759B1 (en) | 2008-09-03 |
Family
ID=35310940
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04719893A Expired - Lifetime EP1603759B1 (en) | 2003-03-12 | 2004-03-12 | Composite file folder |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1603759B1 (en) |
AT (1) | ATE407021T1 (en) |
AU (1) | AU2004220483B2 (en) |
DE (1) | DE602004016300D1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107521788B (en) * | 2017-09-28 | 2024-04-19 | 佛山市鑫锦龙机械科技有限公司 | Plastic file production line |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4427737A (en) * | 1981-04-23 | 1984-01-24 | E. R. Squibb & Sons, Inc. | Microporous adhesive tape |
FR2740071B1 (en) * | 1995-10-20 | 1998-03-27 | Gillibert | DOOR VIEW WITH ENHANCED COVER FOR THE PROTECTION OF ANY ELEMENT EXCEEDING INSIDE POCKETS |
GB2344313B (en) * | 1998-10-03 | 2001-10-24 | Profile Products U K Ltd | File |
-
2004
- 2004-03-12 EP EP04719893A patent/EP1603759B1/en not_active Expired - Lifetime
- 2004-03-12 DE DE602004016300T patent/DE602004016300D1/en not_active Expired - Fee Related
- 2004-03-12 AT AT04719893T patent/ATE407021T1/en not_active IP Right Cessation
- 2004-03-12 AU AU2004220483A patent/AU2004220483B2/en not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
AU2004220483B2 (en) | 2010-07-01 |
ATE407021T1 (en) | 2008-09-15 |
DE602004016300D1 (en) | 2008-10-16 |
AU2004220483A1 (en) | 2004-09-23 |
EP1603759A1 (en) | 2005-12-14 |
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