US20090183469A1 - Ream of paper having heat sealable wrapper - Google Patents
Ream of paper having heat sealable wrapper Download PDFInfo
- Publication number
- US20090183469A1 US20090183469A1 US11/876,495 US87649507A US2009183469A1 US 20090183469 A1 US20090183469 A1 US 20090183469A1 US 87649507 A US87649507 A US 87649507A US 2009183469 A1 US2009183469 A1 US 2009183469A1
- Authority
- US
- United States
- Prior art keywords
- paper
- ream
- wrapper
- layer
- packaged
- 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.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/31—Heat sealable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2317/00—Animal or vegetable based
- B32B2317/12—Paper, e.g. cardboard
- B32B2317/122—Kraft paper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2323/00—Polyalkenes
- B32B2323/04—Polyethylene
- B32B2323/046—LDPE, i.e. low density polyethylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2581/00—Seals; Sealing equipment; Gaskets
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/139—Open-ended, self-supporting conduit, cylinder, or tube-type article
- Y10T428/1393—Multilayer [continuous layer]
Definitions
- the invention relates to a wrapper for reams of paper that may be heat sealed without damaging the paper.
- Paper sheets are packaged for shipping and storage in ream quantities of 500 sheets. Each ream of sheets is wrapped by a tubular shaped overwrap having a longitudinal seal. After the tubular form is shaped, the ends are folded to complete the package. To maintain the wrapper in closed position, adhesives or heat seals are used.
- the cost of hot melt adhesives includes not only the adhesive itself, but also the machinery to apply the adhesive to the wrapper as well as downtime needed to clean adhesive off of machine parts which become coated due to jambs and feed problems.
- Some heat sealed wrappers use a coating of low density polyethylene (LDPE) on one surface.
- LDPE low density polyethylene
- the LDPE is softened to a point to allow bonding of the coated surface to the opposite surface of the wrapper.
- the degree of heating and pressure necessary to effectuate a heat seal causes the polyethylene to bond to the wrapped product.
- U.S. Pat. No. 5,250,348 discloses the application of a layer of polyamine, for example, polyethyleneimine (P.E.I.) coated onto the paper substrate on the side opposite of the LDPE.
- P.E.I. polyethyleneimine
- the use of P.E.I. allows the use of low temperature and pressure to effect a heat seal.
- temperatures of 520 to 590 degrees Fahrenheit and pressure of 0.04 pounds per square inch and a dwell time of 1 to 1.5 seconds are sufficient.
- Carbonless paper is also protected with chip board on the top and bottom so contact with the molten LDPE is prevented along the longitudinal seam.
- this laminate as a wrapper for reams of copy paper often causes the polyethylene layer to adhere to the sheet of paper immediately adjacent the longitudinal seam. There is a need in the prior art for a wrapper for reams of paper that does not damage or bond to the paper being packaged.
- the wrapper for a ream of paper has an inner surface coated with polyethylene.
- the polyethylene layer is used to create a seal with the application of heat. Areas of the inner surface in proximity to a heat source during the heat sealing process and where a seal will not be beneficial are covered with a heat shield, such as a varnish. In this way, damage to the paper is avoided.
- the varnish includes Styrenated Acrylic polymer, with Kaolin Clay and ink. Other possible varnishes include acrylics, clay coatings, Styrene Butadiene Rubber (SBR) latex, polyvinylidene chloride, silicone and inks. The varnish is applied to the wrapper during the same manufacturing process as the polyethylene coating.
- FIG. 1 is a view of the outer surface of the wrapper.
- FIG. 2 depicts the inner surface of the wrapper.
- FIG. 3 is a cross-section of the wrapper.
- FIG. 4 is a view of the manufacturing process for the wrapper.
- the wrapper is folded about a ream of paper.
- panels are formed in the wrapper to encapsulate the ream of paper. These panels include a set of middle panels covering the top, bottom and sides of the paper, and two sets of end panels, folded inwardly and sealed to form the ends of the package.
- FIG. 1 shows an exemplary wrapper, with the dotted lines indicating where the wrapper is folded. Given the flexible nature of the wrapper, fold lines do not need to be formed in the wrapper itself.
- the ream of paper is placed in the center of the wrapper on central panel 42 .
- the size of the panel 42 corresponds to the size of the paper being wrapped.
- the wrapper is folded about the ream of paper, with the panels 44 covering the sides of the ream and the bottom panels 46 , 48 folded to cover the bottom of the ream of paper.
- the bottom panels overlap and are heat sealed together.
- the end panels are folded inwardly with the two side end panels 66 , 68 folded against the ream of paper and the central end panel 62 overlying these two panels.
- the end panels are folded along lines 48 - 50 to complete the end seal.
- FIG. 2 shows the inner surface of the wrapper, with the application of varnish along the left edge 68 and right edge 70 .
- the varnish 17 may be a Styrenated Acrylic polymer latex, with Kaolin Clay and ink, and is spaced from the left edge to expose a strip of polyethylene coating that will heat seal to the outside of the panel 46 .
- the ink provides color to the varnish so the coverage of the varnish is visible.
- the varnish covers the side panels 44 and slightly covers the middle panel 42 . As can be seen, part of the triangular piece formed by fold lines 48 must remain unvarnished to expose polyethylene for the heat seal along the end seal.
- the varnish is shown terminating short of the right edge to expose the polyethylene coating.
- FIG. 3 shows a cross-section of the laminate 10 , as seen along lines 3 - 3 of FIG. 2 .
- the substrate 12 such as Kraft paper, a laminate of paper/film or a film
- the varnish 17 is applied on top of the LDPE layer.
- a primer of P.E.I. is preferably placed over the top of the print.
- the preferred primer is Polymin P #014811 made by BASF Wyandotte Corp. in Parsippany, N.J. which contains Polyethyleneimine and Polyaziridine.
- the primer could be placed under the print.
- the primer coating can be 100% coverage or pattern coated.
- a pattern coating will give seals that are easier to open because the bond will fluctuate between areas of high bond force to areas of low bond force. Areas of low bond force within the seal region facilitate opening and separation of plies.
- the preferred composition of the laminate is as follows:
- Kraft paper substrate 12 can be substituted with a paper/film laminate or a single film substrate.
- the preferred composition of the heat shield varnish is:
- Styrenated Acrylic has a Tg of 0 to 10 degrees Fahrenheit, and a melt temperature of 350 to 370 degrees Fahrenheit. Clay addition levels of 15% or higher give good release of the bottom sheet from the wrapper. Clay levels below 15% have had a slight tack of the varnish to the bottom sheet. Without the use of clay, the varnish would have the potential of sticking to the bottom of the sheet with enough force to distort the paper or dislodge portions of the surface fibers.
- Clay was preferred because it performed better than Aluminum Oxide as a release agent and clay is lower cost.
- FIG. 4 shows the preferred method for forming the laminate.
- a supply reel 22 feeds a substrate 12 toward a first P.E.I. applicator 26 applying a layer 24 onto the first surface 14 of the substrate.
- This P.E.I. application is optional. It is only needed when other priming methods cannot be used.
- a polyethylene extruder 30 applies a layer of polyethylene 16 to the top surface of the laminate.
- a varnish applicator provides two lanes of varnish 17 to the laminate.
- a P.E.I. applicator applies a layer of P.E.I. 20 to the second surface 18 of a laminate.
- the completed laminate is fed toward a take-up reel 36 .
Landscapes
- Paper (AREA)
- Laminated Bodies (AREA)
Abstract
The wrapper for a ream of paper has an inner surface coated with polyethylene. When the wrapper is formed about a ream of paper, the inner layer overlaps and contacts the outer layer along a longitudinal seam. The polyethylene layer is used to create a seal with the application of heat. Areas of the inner surface in proximity to a heat source during the heat sealing process and where a seal will not be beneficial are covered with a heat shield, such as a varnish. In this way, damage to the paper is avoided. The varnish includes Styrenated Acrylic polymer, with Kaolin Clay and ink. The varnish is applied to the wrapper during the same manufacturing process as the polyethylene coating.
Description
- The present Patent application claims benefit of U.S. patent application Ser. No. 10/359,160 filed Feb. 6, 2003, and entitled Ream Wrapper For Heat Seal Application Wrap Lines.
- The invention relates to a wrapper for reams of paper that may be heat sealed without damaging the paper.
- Paper sheets are packaged for shipping and storage in ream quantities of 500 sheets. Each ream of sheets is wrapped by a tubular shaped overwrap having a longitudinal seal. After the tubular form is shaped, the ends are folded to complete the package. To maintain the wrapper in closed position, adhesives or heat seals are used. The cost of hot melt adhesives includes not only the adhesive itself, but also the machinery to apply the adhesive to the wrapper as well as downtime needed to clean adhesive off of machine parts which become coated due to jambs and feed problems.
- Some heat sealed wrappers use a coating of low density polyethylene (LDPE) on one surface. The LDPE is softened to a point to allow bonding of the coated surface to the opposite surface of the wrapper. Often, the degree of heating and pressure necessary to effectuate a heat seal causes the polyethylene to bond to the wrapped product.
- U.S. Pat. No. 5,250,348 (Knauf) discloses the application of a layer of polyamine, for example, polyethyleneimine (P.E.I.) coated onto the paper substrate on the side opposite of the LDPE. The use of P.E.I. allows the use of low temperature and pressure to effect a heat seal. When sealing carbonless paper, temperatures of 520 to 590 degrees Fahrenheit and pressure of 0.04 pounds per square inch and a dwell time of 1 to 1.5 seconds are sufficient. Carbonless paper is also protected with chip board on the top and bottom so contact with the molten LDPE is prevented along the longitudinal seam.
- The use of this laminate as a wrapper for reams of copy paper often causes the polyethylene layer to adhere to the sheet of paper immediately adjacent the longitudinal seam. There is a need in the prior art for a wrapper for reams of paper that does not damage or bond to the paper being packaged.
- It is an object of the invention to provide a wrapper for paper sealed by heat without damaging the paper.
- It is another object of the invention to provide a heat shield on the inner surface of the wrapper to protect the paper.
- It is another object of the invention to selectively place a heat shield to allow the proper amount of bonding.
- It is another object of the invention to provide a heat shield in the form of a varnish applied during the formation of the wrapper.
- These and other objects of the invention will become apparent to one of ordinary skill in the art after reviewing the disclosure of the invention.
- The wrapper for a ream of paper has an inner surface coated with polyethylene. When the wrapper is formed about a ream of paper, the inner layer overlaps and contacts the outer layer along a longitudinal seam. The polyethylene layer is used to create a seal with the application of heat. Areas of the inner surface in proximity to a heat source during the heat sealing process and where a seal will not be beneficial are covered with a heat shield, such as a varnish. In this way, damage to the paper is avoided. The varnish includes Styrenated Acrylic polymer, with Kaolin Clay and ink. Other possible varnishes include acrylics, clay coatings, Styrene Butadiene Rubber (SBR) latex, polyvinylidene chloride, silicone and inks. The varnish is applied to the wrapper during the same manufacturing process as the polyethylene coating.
-
FIG. 1 is a view of the outer surface of the wrapper. -
FIG. 2 depicts the inner surface of the wrapper. -
FIG. 3 is a cross-section of the wrapper. -
FIG. 4 is a view of the manufacturing process for the wrapper. - The wrapper is folded about a ream of paper. During the folding process, panels are formed in the wrapper to encapsulate the ream of paper. These panels include a set of middle panels covering the top, bottom and sides of the paper, and two sets of end panels, folded inwardly and sealed to form the ends of the package.
FIG. 1 shows an exemplary wrapper, with the dotted lines indicating where the wrapper is folded. Given the flexible nature of the wrapper, fold lines do not need to be formed in the wrapper itself. - The ream of paper is placed in the center of the wrapper on
central panel 42. The size of thepanel 42 corresponds to the size of the paper being wrapped. The wrapper is folded about the ream of paper, with thepanels 44 covering the sides of the ream and thebottom panels side end panels central end panel 62 overlying these two panels. The end panels are folded along lines 48-50 to complete the end seal. -
FIG. 2 shows the inner surface of the wrapper, with the application of varnish along theleft edge 68 andright edge 70. Thevarnish 17 may be a Styrenated Acrylic polymer latex, with Kaolin Clay and ink, and is spaced from the left edge to expose a strip of polyethylene coating that will heat seal to the outside of thepanel 46. The ink provides color to the varnish so the coverage of the varnish is visible. On both sides, the varnish covers theside panels 44 and slightly covers themiddle panel 42. As can be seen, part of the triangular piece formed byfold lines 48 must remain unvarnished to expose polyethylene for the heat seal along the end seal. The varnish is shown terminating short of the right edge to expose the polyethylene coating. This enables eitherpanel right edge 70. The space between theleft edge 68 and the beginning of thevarnish 17 is up to one inch. The varnish extends from the left edge at least until the fold line between theside panel 44 andpanel 48. By enabling the amount of varnish applied to thecentral end panel 62, the opening force to break the end seal can be varied. The greater extent of varnish used, the less area available for heat sealing. -
FIG. 3 shows a cross-section of the laminate 10, as seen along lines 3-3 ofFIG. 2 . As can be seen, thesubstrate 12, such as Kraft paper, a laminate of paper/film or a film, has a P.E.I.layer 20 applied to onesurface 18 and a lowdensity polyethylene layer 16 applied to thesecond surface 14. Thevarnish 17 is applied on top of the LDPE layer. A primer of P.E.I. is preferably placed over the top of the print. The preferred primer is Polymin P #014811 made by BASF Wyandotte Corp. in Parsippany, N.J. which contains Polyethyleneimine and Polyaziridine. - If the print area is small, especially in the seal regions, the primer could be placed under the print. The primer coating can be 100% coverage or pattern coated. A pattern coating will give seals that are easier to open because the bond will fluctuate between areas of high bond force to areas of low bond force. Areas of low bond force within the seal region facilitate opening and separation of plies.
- The preferred composition of the laminate is as follows:
- Kraft Paper
- 20 lbs/3,000 ft2 to 80 lbs/3,000 ft2. Typically 50 lbs/3,000 ft2.
- LDPE Coating
- 5 lbs/3,000 ft2 to 20 lbs/3,000 ft2. Typically 10 lbs/3,000 ft2.
- Dried Varnish Coating
- 0.05 lbs/3,000 ft2 to 2 lbs/3,000 ft2. Typically 0.4 lbs/3,000 ft2.
- Dried Primer Coating
- 0.005 lbs/3,000 ft2 to 2 lbs/3,000 ft2. Typically 0.02 lbs/3,000 ft2.
-
Kraft paper substrate 12 can be substituted with a paper/film laminate or a single film substrate. - The preferred composition of the heat shield varnish is:
-
Styrenated Acrylic Polymer 30.6% wt. Kaolin Clay 20.0% wt. Ink - blue 0.1% wt. Volatiles 49.3% wt. - Styrenated Acrylic has a Tg of 0 to 10 degrees Fahrenheit, and a melt temperature of 350 to 370 degrees Fahrenheit. Clay addition levels of 15% or higher give good release of the bottom sheet from the wrapper. Clay levels below 15% have had a slight tack of the varnish to the bottom sheet. Without the use of clay, the varnish would have the potential of sticking to the bottom of the sheet with enough force to distort the paper or dislodge portions of the surface fibers.
- The effect of the P.E.I. coating on a laminate can be seen from comparing the four laminates listed below.
- 1. P.E.I. 100% Coverage
-
-
Print 2 color 25% Coverage - 50# White Extensible Kraft
- 10# LDPE Chevron 1019
- 0.4# Heat Shield Varnish—No Clay
-
- 2. P.E.I. 100% Coverage
-
-
Print 2 color 25% Coverage - 50# White Extensible Kraft
- 10# LDPE Chevron 1019
- 0.6# Heat Shield Varnish—No Clay
-
- 3. No P.E.I.
-
-
Print 2 color 25% Coverage - 50# White Extensible Kraft
- 10# LDPE Chevron 1019
- 0.4# Heat Shield Varnish—No Clay
-
- 4. No P.E.I.
-
-
Print 2 color 25% Coverage - 50# White Extensible Kraft
- 10# LDPE Chevron 1019
- 0.6# Heat Shield Varnish—No Clay
-
- Heat Seal Settings:
- Heat Seal Unit Manufacturer=WillPemco
- Side Seal Temperatures=345 degrees Fahrenheit
- Girth Seal=300 degrees Fahrenheit
- Dwell Time=2 seconds
- Pressure=1 to 2 psi
- The characteristics of each laminate is summarized in the following Table:
-
Heat Shield Coat Weight Sticking To Laminate P.E.I. (lbs/3,000 ft2) Seal Strength Bottom Sheet 1 Yes 0.4 Excellent Slight 2 Yes 0.6 Excellent Slight 3 No 0.4 Poor Slight 4 No 0.6 Poor Slight - Comments:
- 1. The heavier heat shield varnish coating weight induced a slight CD curl. Curl can cause the wrapper machine to jamb, therefore the lower varnish coating weight was preferred.
- 2. The slight tack to the bottom sheet did not tear the sheet, but was not considered desirable because surface fiber could become loosened or the sheet could become distorted if the tack level increased.
- The effect of the amount of filler in the varnish is seen by comparing the various laminates listed below:
-
Filler Heat Shield Content Coat Weight Sticking To Laminate Filler Type % Weight (lbs/3,000 ft2) Bottom Sheet 1 Clay 15 0.4 Very Slight 2 Clay 20 0.4 None 3 A12 03 15 0.4 Very Slight 4 A12 03 20 0.4 Very Slight 5 None 0 0.4 Slight - Comments:
- 1. Clay was preferred because it performed better than Aluminum Oxide as a release agent and clay is lower cost.
-
FIG. 4 shows the preferred method for forming the laminate. Asupply reel 22 feeds asubstrate 12 toward a first P.E.I.applicator 26 applying alayer 24 onto thefirst surface 14 of the substrate. This P.E.I. application is optional. It is only needed when other priming methods cannot be used. Downstream, apolyethylene extruder 30 applies a layer ofpolyethylene 16 to the top surface of the laminate. Over the polyethylene layer, a varnish applicator provides two lanes ofvarnish 17 to the laminate. A P.E.I. applicator applies a layer of P.E.I. 20 to thesecond surface 18 of a laminate. The completed laminate is fed toward a take-up reel 36. - While the invention has been described with reference to a preferred embodiment, variations and modifications would be apparent to one of ordinary skill in the art, and the invention encompasses such variations and modifications.
Claims (12)
1. A packaged ream of paper comprising:
a plurality of pieces of paper stacked to form a ream of paper;
a wrapper extending from a first side to a second side and between an upper extent and a lower extent to form an outer surface and an inner surface dimensioned to wrap about the ream of paper and form an overlap area along at least a portion of the first side and second side;
a heat sealable polymer layer applied to at least a portion of the inner surface of the wrapper to secure the wrapper about the ream of paper when subjected to a predetermined temperature and predetermined pressure;
a primer layer applied to at least a portion of the outer surface of the wrapper to reduce at least one of the predetermined temperature and the predetermined pressure at which the heat sealable polymer layer forms a seal; and
a melt shield layer at least applied bordering at least a portion of the overlap area on the inner surface of the wrapper to restrict the heat sealable polymer layer from encountering the ream of paper and to protect the ream of paper from contact with molten heat sealable polymer layer when subjected to the predetermined temperature and the predetermined pressure applied to at least the overlap area to secure the wrapper about the ream of paper.
2. The packaged ream of paper of claim 1 wherein the melt shield is a includes at least one of varnish, Styrenated Acrylic polymer latex, Styrenated Acrylic polymer with Kaolin Clay, polyvinylidene chloride, silicone coating, and ink.
3. The packaged ream of paper of claim 1 wherein the primer layer is configured to reduce the predetermined pressure to less than 5 pounds/square inch (psi) and wherein the melt shield layer is configured to maintain structural stability when subjected to greater than 5 psi.
4. The packaged ream of paper of claim 1 wherein the primer layer is configured to reduce the predetermined temperature to less than 400 degrees F. and wherein the melt shied layer is configured to maintain structural stability when subjected to greater than 400 degrees F.
5. The packaged ream of paper of claim 1 wherein the primer layer includes polyethyleneimine (P.E.I.).
6. The packaged ream of paper of claim 1 wherein the heat sealable polymer is arranged along one of the first side and the second side of the wrapper and wherein the melt shield layer is applied over a portion of the heat sealable polymer to restrict the heat sealable polymer to a strip extending at an extremity of the one of the first side and the second side of the wrapper.
7. The packaged ream of paper of claim 1 wherein the heat sealable polymer layer includes a polyethylene layer.
8. The packaged ream of paper of claim 7 wherein the polyethylene layer includes low density polyethylene (LDPE).
9. The packaged ream of paper of claim 1 wherein the melt shield layer extends continuously between the upper extent and the lower extent along the overlap area.
10. The packaged ream of paper of claim 1 wherein the melt shield layer extends at least partially into the overlap area.
11. The packaged ream of paper of claim 1 wherein the heal sealable polymer layer extends over an entirety of the inner surface of the wrapper and the melt shield layer extends over the heat sealable polymer layer except along a lane extending within the overlap area on one of the first side and the second side of the wrapper.
12. The packaged ream of paper of claim 1 wherein the wrapper includes at least one paper and film.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/876,495 US20090183469A1 (en) | 2003-02-06 | 2007-10-22 | Ream of paper having heat sealable wrapper |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/359,160 US20040157025A1 (en) | 2003-02-06 | 2003-02-06 | Ream wrapper for heat seal application wrap lines |
US11/876,495 US20090183469A1 (en) | 2003-02-06 | 2007-10-22 | Ream of paper having heat sealable wrapper |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/359,160 Continuation US20040157025A1 (en) | 2003-02-06 | 2003-02-06 | Ream wrapper for heat seal application wrap lines |
Publications (1)
Publication Number | Publication Date |
---|---|
US20090183469A1 true US20090183469A1 (en) | 2009-07-23 |
Family
ID=32823783
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/359,160 Abandoned US20040157025A1 (en) | 2003-02-06 | 2003-02-06 | Ream wrapper for heat seal application wrap lines |
US11/876,495 Abandoned US20090183469A1 (en) | 2003-02-06 | 2007-10-22 | Ream of paper having heat sealable wrapper |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/359,160 Abandoned US20040157025A1 (en) | 2003-02-06 | 2003-02-06 | Ream wrapper for heat seal application wrap lines |
Country Status (1)
Country | Link |
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US (2) | US20040157025A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080302067A1 (en) * | 2007-06-08 | 2008-12-11 | Sergio Sobreira De Oliveira | Easy-opening ream wrap |
US8568842B2 (en) | 2010-12-28 | 2013-10-29 | International Paper Company | Film for wrapping, methods of making and using |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050233116A1 (en) * | 2004-04-16 | 2005-10-20 | Mueller Lou A | Zone-coated poly ream wrapper |
WO2006058875A1 (en) * | 2004-12-02 | 2006-06-08 | Innovia Films Ltd | Improvements in or relating to coated films |
GB0912201D0 (en) | 2009-07-14 | 2009-08-26 | Imerys Minerals Ltd | Coating compositions |
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US3260359A (en) * | 1965-06-09 | 1966-07-12 | Procter & Gamble | Package improvement |
US4421780A (en) * | 1980-12-24 | 1983-12-20 | Societa' Italiana Resine S.I.R. S.P.A. | Heat-sealable polyolefin films and processes for their preparation |
US4613046A (en) * | 1984-06-28 | 1986-09-23 | James River Corporation | Reclosable package and carton blank |
US5175978A (en) * | 1991-12-09 | 1993-01-05 | International Paper Company | Method for wrapping products in very low contact pressure applications |
US5250348A (en) * | 1991-12-09 | 1993-10-05 | International Paper Company | Improved wrapper paper for use in very low contact pressure applications |
US5421512A (en) * | 1988-03-11 | 1995-06-06 | Fbi Brands Ltd. | System for packaging perishable liquids in gable top cartons |
US6242397B1 (en) * | 1997-08-08 | 2001-06-05 | Lever Brothers Co., Division Of Conopco, Inc. | Soap wrappers |
US6505735B1 (en) * | 1998-03-07 | 2003-01-14 | British American Tobacco (Investments) Limited | Label for resealing a pack of smoking articles |
US20030087778A1 (en) * | 1999-01-15 | 2003-05-08 | Unilever Home & Personal Care Usa, Division Of Conopco | Soap wrappers |
US20030203166A1 (en) * | 1993-02-16 | 2003-10-30 | Dronzek Peter J. | Shrinkable polymeric labels |
-
2003
- 2003-02-06 US US10/359,160 patent/US20040157025A1/en not_active Abandoned
-
2007
- 2007-10-22 US US11/876,495 patent/US20090183469A1/en not_active Abandoned
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US3260359A (en) * | 1965-06-09 | 1966-07-12 | Procter & Gamble | Package improvement |
US4421780A (en) * | 1980-12-24 | 1983-12-20 | Societa' Italiana Resine S.I.R. S.P.A. | Heat-sealable polyolefin films and processes for their preparation |
US4613046A (en) * | 1984-06-28 | 1986-09-23 | James River Corporation | Reclosable package and carton blank |
US5421512A (en) * | 1988-03-11 | 1995-06-06 | Fbi Brands Ltd. | System for packaging perishable liquids in gable top cartons |
US5175978A (en) * | 1991-12-09 | 1993-01-05 | International Paper Company | Method for wrapping products in very low contact pressure applications |
US5250348A (en) * | 1991-12-09 | 1993-10-05 | International Paper Company | Improved wrapper paper for use in very low contact pressure applications |
US20030203166A1 (en) * | 1993-02-16 | 2003-10-30 | Dronzek Peter J. | Shrinkable polymeric labels |
US6242397B1 (en) * | 1997-08-08 | 2001-06-05 | Lever Brothers Co., Division Of Conopco, Inc. | Soap wrappers |
US6505735B1 (en) * | 1998-03-07 | 2003-01-14 | British American Tobacco (Investments) Limited | Label for resealing a pack of smoking articles |
US20030087778A1 (en) * | 1999-01-15 | 2003-05-08 | Unilever Home & Personal Care Usa, Division Of Conopco | Soap wrappers |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080302067A1 (en) * | 2007-06-08 | 2008-12-11 | Sergio Sobreira De Oliveira | Easy-opening ream wrap |
US9346216B2 (en) | 2007-06-08 | 2016-05-24 | International Paper Company | Easy-opening ream wrap |
US8568842B2 (en) | 2010-12-28 | 2013-10-29 | International Paper Company | Film for wrapping, methods of making and using |
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US20040157025A1 (en) | 2004-08-12 |
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