CA1327304C - Apparatus and method for roll wrapping with poly-coated paper - Google Patents
Apparatus and method for roll wrapping with poly-coated paperInfo
- Publication number
- CA1327304C CA1327304C CA000548656A CA548656A CA1327304C CA 1327304 C CA1327304 C CA 1327304C CA 000548656 A CA000548656 A CA 000548656A CA 548656 A CA548656 A CA 548656A CA 1327304 C CA1327304 C CA 1327304C
- Authority
- CA
- Canada
- Prior art keywords
- roll
- wrapper
- paper
- thermoplastic
- wrapping
- 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 - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B25/00—Packaging other articles presenting special problems
- B65B25/14—Packaging paper or like sheets, envelopes, or newspapers, in flat, folded, or rolled form
- B65B25/146—Packaging paper or like sheets, envelopes, or newspapers, in flat, folded, or rolled form packaging rolled-up articles
- B65B25/148—Jumbo paper rolls
Abstract
ABSTRACT OF THE DISCLOSURE
An apparatus and method for wrapping paper rolls with a paper coated with a thermoplastic material. The leading edge of the wrapper is adhered to the roll by softening the thermoplastic. After the wrapper is wrapped about the roll, the trailing edge of the wrapper is adhered to the wrapped roll by softening the thermoplastic. The wrapping apparatus includes a heatable transport bar for heating the desired portions of the wrapper and contacting the heated portions to the roll.
An apparatus and method for wrapping paper rolls with a paper coated with a thermoplastic material. The leading edge of the wrapper is adhered to the roll by softening the thermoplastic. After the wrapper is wrapped about the roll, the trailing edge of the wrapper is adhered to the wrapped roll by softening the thermoplastic. The wrapping apparatus includes a heatable transport bar for heating the desired portions of the wrapper and contacting the heated portions to the roll.
Description
. ~ B64112812 .~
1 APP~RATUS AND METHOD FOR ROLL WRAPPING
WITH POLY-COA~ED PAPER
BACKGROUND OF THE INVENTION
The present invention relates to paper manufacturing equipment, and more particularly to roll wrapping machines.
When manufacturing paper, it is common to wrap the completed rolls with a heavy paper for protection during subsequent shipment andJor storage. The paper wrapped about the roll is known as a "roll wrapper" and is typically a kraft paper to protect the paper roll from marking and moisture damage.
Typically, roll wrapping machines use liquid adhesive to secure the roll wrapper about the paper roll.
Exemplary machines are illustrated in U.S. Patents 3,416,491, issued December 17, 1968, to Turnbull et al, ~ enti~led LEADING EDGE GLUER: 2,938,319, issued May 31, 1960, - to Nystrand, entitled APPARATUS FOR HANDLING CYLINDRIC~L
OBJECTS; 2,803,935, issued August 27, 1957, to Gibson, entitled ROLL WRAPPING MACHINE; and 2,746,224, issued May 22, 1956, to Wollett, entitled WRAPPING MACHINE. However, the liquid adhesive applicators are inherently sloppy creating an unsightly wrapped roll. Further, the adhesive applicators requlre maintenance and servicing, resulting in down-time.
The aforementioned problems are overcome in a roll wrapping machine here described eliminating the need for liquid adhesive applicators. More particularly, here described are an apparatus and method for wrapping paper rolls with a paper coated with a thermoplastic, using the softened B
- -`` `` ` 1 327304 , _.
1 thermoplastic as the adhesive to secure the wrapper about the roll.
The present method includes the steps o~ 1) providing a wrapper coated on one side with a thermoplastic, 2) adhering the leading edge of the wrapper to the paper ~: roll by softening the thermoplastic, 3) wrapping the wrapper ,~t.~ about the roll, and 4) adhering the trailing edge of the wrapper to the roll by softening the thermoplastic. The present apparatus includes structure for implementing this defined method.
The presently defined method and apparatus totally eliminate the need for liquid adhesive applicators, and the attendant maintenance, servicing, and down-time. Further, the wrapped rolls have a neat and attractive appearance without liquid glue slopped about the roll wrapper. Third, the poly-coating on the roll wrapper improves moisture pxotection of the roll.
hese and other ob~ects, advantages, and features ; of the invention will be more readily understood and appreciated by reference to the detailed description of a preferred embodiment and the drawings wherein:
Fig. 1 is a front perspective view of a roll wrapping machine embodying the invention;
Fig. 2 is a rear perspective view of the roll wrapping machine;
Figs. 3 6 are side elevational views of the roll wrapping maching illustrating its operation:
Fig. 7 is a plan view of the paper-receiving face of the gripper bar; and Fig. 8 is a sectional view taken along plane VIII-VIII in Fig. 7.
, `
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` -~ ` 1 32730 "~ ,, ~ 1 DETAILED DESCRIPTION QF THE PREFERRED EMBODIMENT
, . .
., A roll wrapping machine constructed as a preferred ~` embodiment of the invention is illustrated in Figs. 1-6 and generally designated 10. Basically, the machine 10 includes a wrapper roll support 12, a wrapper dispensing assembly 14, a gripper bar 16, and a roll support assembly 18. A roll 20 of roll wrapping material is supported on the support 12; and a $~ paper roll 22 to be wrapped is supported on the support assembly ~
18. The roll wrapper material 21 having a thermoplastic coating is dispensed by the assembly 14; and as the wrapper material is dispensed~ the heater bar moves upwardly and downwardly to convey the leading and trailing edges of each wrapper to the paper roll. The gripper bar 16 is heatable to tackify the thermoplastic on the roll wrapper and thereby adhere the roll wrapper to the roll. Only the leading and trailing ~: edges of the wrapper need be heated as will be described.
Wrapper roll support 12, dispensing assembly 14, and roll support assembly 18 are generally well known to those having ordinary skill in the art and will not be described in detail. Exemplary roll wrapping machines ~, incorporating this structure are those sold by Lambs-Gray Harbor Company of Hoaquiam, Washington.
The wrapper roll support 12 is a conventional support comprising an axle supported on a back stand (not shown). optionally, multiple supports can be provided for multiple wrapping rolls to accommodate rolls of varying widths and materials. If multiple rolls are included, a selector mechanism is also provided for selecting the appropriate wrapper material for each paper roll.
The wrapping material roll 20 is rotatably :, suppoxted by the support 12 for subsequent delivery to the ~: 3 !.
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r 1 327304 S 1 dispensing assembly 14. In the preferred embodiment, the ~ wrapping material is a 42-pound kraft paper coated with ! ~ polyethylene at a rate of approximately 14.4 pounds per ! basis (i.e. 3,000 square feet). The thermoplaetic S ultimately faces the paper roll 22 to be wrapped.
As used herein, the term "ther~oplastic material"
means polymerized resins which are thermoplastic in nature (i.e. becomes softened and flowable upon heating above their thermal softening point without decomposition).
Thermoplastic~ are a well-known class of material6 and include polymerized olefins (e.g. polyethylene, polypropylene, and polybutylene) and polymerized vinyls ; (e.g. polyvinyl chloride, polyvinyl acetate, and variouB
vinyl polymer3). The major thermoplastic material used in coating paper is polyethylena, for example recycled milk cartons. The so~tening temperature of polyethylene is approximately 280 degrees F.
Although a papsr coated with thermoplastic is utilized in the present invention, it is expected that other ~; 2Q papers coated with other materials which act as he~t-activated adhesives can also be used.
!'. The dispensing assembly 14 includes a pair of f~ed rollers 24a and 24b, a pair o~ guide plates 26a and 26b, and a knlfe 28. The feed roller~ a4 are powered; and the wrapping material 21 extend6 therebetween to be drawn from the roll 20. At least one of the rollers 24a ha~ ~n encoder ; thereon enabling the wrapping machine to ~onitor the length - of paper difipensed from the as~embly 14. Th~ guido plates 26 are gen2rally parallel one ~nother and dsfine a relatively larga open mouth 30 at ~heir upper end to receive the paper from th~ roller~ 24 and guide the paper ~o the gripper bar 16. A knife 28 is ~ounted ~n aonventional -:
1 fashion on plate 26a and includes a mechanism (not `~ specifically shown) for tran~porting the Xnife horizontally ,~i ~ within the slot 32 to cut the wrapping material 21.
~~ The paper roll support 18 include~ a pair of rollers 18a and 18b which are parallel to one another and are powered enabling a paper roll 22 supported thereon to be rotated.
The gripper bar 16 is illustrated in detail in Figs. 7 and 8. The bar includes vacuum ports ~or gripping the paper and a heated ~ace for heating the roll wrapper to tackify the thermoplastic. The heater bar 16 includes a paper receiving face 34 tFig. 7) which receive~ the roll ~ wrapping material thereacross. The face 34 i8 defined by a -~ face plate 36 which is approximately 108 inches long and 8 inches high (note Fig. 7 i8 not to ~cale). A plurality of strip heaters 38 are sandwiched between the face plate 36 and an intermediate plate 40. O~erlying the intermediate plate 40 is an insulation layer 42 and a base plate 44. A
frame plate 46 is spaced from the base plate 44 by leg plates 48 to define a vacuum chamber 50 therebetween. Face plate 36, inter~ediate plata 40, base plate 44, frame plate 46, and leg plate~ 48 are all fabricated of aluminum. Bolts 52 with nuts 54 extend through all components o~ the gripper bar 16 to tia the Qlements together. Preferably, ~urflcient etrip heater~ 38 are included to provide approximately nine watts per square inch over the entire face 34.
A plurality of vacuum ports 56 and 58 extend through thQ face 34 to the vacuum chamber 5Q. The upper row of linearly aligned port~ 56 are all 1/4 inch ln diameter and ~paced on two-inch center~. The lower row o~ ports 58 ~ i~:
~ ~ are all 1~2 inch in diameter and spaced on the same two-inch '~
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`: 1 327304 i 1 centers. Each of the lower portY 58 i8 counterbor~d at 60 .; to a diameter of 1 1/8 inch.
The vacuum chambsr 50 is connected in conventienal fashion via a flexible duct 62 to a blower 64. Preferably, the blower 64 is operated to create a vacuum of 27 inche~ in the chamber 50.
As illustrated in Fig. 1, the gripper bar 16 is ~ tran6portable in a cubstantially vertical plane between an ,~ uppermost position 16' (shown in phantom) and a lowermost ~, 10 position 16" (also shown in phantom). The kransportation ~, -~- mechanism for the gripper bar 16 is conventional and well llQWn in the art.
.~
operation The operation of the roll wrapping machine 10 is lS illustrated in Figs. 3-6. First, a paper roll 22 to be ~' wrapped is supported on rollers 18a and 18b. Rollers 24 are actuated to dispense the wrapping ~heet 21 80 that a leading edge portion 21a is positioned ovar the gripper bar facQ 34 (Fig. 3). Th~ arrangement of tha vacuum ports 56 and 58 (see Figs. 7 and 8) is important to insure proper positioning of the paper on the gripper bar race. As the wrapper i8 61id downwardly over the gripper bar face 34, the vacuum provld~d by the small port~ 56 slows the wrapper down wlthout actually etopping it. The greater vacuum provided by the larger ports 58 with the counterbores 60 stops the : wrapper completely and securely grip~ the wrapper.
The gripper bar 16 is then transported to its lower po~ition 16" tangential to tha paper roll 22. The gripper bar 16 holds the leading edge 21a with the thermoplastic against the papar roll. The heat providQd by the gripper bar 16 raisas ~he t~mper tUXQ o~ the thermoplastlc above its ~oftening point so that the '~
~ -6-. -^~ 1 thermoplastic acts as an adhasive to secure the leading edge 21a to the paper roll 22. Gripper bar 16 i8 maintain~d in the position illustrated in Fig. 4 for approximately 9 seconds to insure proper securement o~ the leading edge 2la s.
to the paper roll 22.
Two actions then take place as illustrated in Fig.
5. The gripper bar 16 returns to its uppermost position 16' adjacent the dispensing mechanism 14; while the paper roll 22 is rotated by the rollers 18. Rotation of the roll 22 pu116 the wrapping material 21 about the paper roll and thereby ef~ects wrapping. The encoder (not shown) on roller~ 24 measure~ the paper dispensed from the knife 28 since the last cutting operation. When the proper length has been dispensed, the knife 28 is actuated in conventional fashion to sever a wrappar from the ~aterial 21.
Preferably, the length of the wrapper i~ greater than the circumference of the roll 22 80 that ths tralling adgo Or :``
the wrapper wlll be adhered to ths wrapping as will be describ~d.
Fig. 6 illustrates the complotion of the roll ,, wrapping operation. The gripper bar 16 moves downwardly to its lower po~ition 16" as the roll 22 continues to rotate until the trailing edge 21b i8 positioned over the wrapping material. At thia point, the gripper bar face 34 i8 again tangential to the paper roll 22. The gripper bar is held in `~ thi~ lowar poaition 16'1 again for approximately nine seconds J to insuxe that the so~tenQd or tackifiad thermoplastic pxoperly adheres to the undQrlying layer of wrapping ; material. When wrapping i5 compl~te, gripper bar 16 returns to its uppermo~t po~ition 1~' to receive the new leading edge of the continuou~ web 21.
~: ~ 1 327304 ~ 1 The ends of the wrapper on the roll 22 are crimped y`; in conventional fashion; and headers, or paper disks, may be .L
adhered to either end of the crimped wrapper ends. A
~`~ conventional roll ejector (not shown) is then actuated to . S e;ect the wrapped roll 22 from the support assembly 18.
.~ Embodiments of the present invention totally ., .
eliminate the need for using liquid adhesive applicators with ~ their attendant maintenance, servicing, and down-time problems.
-~; Seccnd, the wrapped rolls are extremely neat and uniformly sealed ~ 10 without unsightly glue overlap or slop. Third, the : ~
poly-coated wrapping paper creates more effective moisture protection than has previously been available.
The above description is that of a preferred embodiment of the invention. Various alterations and changes can be made without departing from the spirit and broader aspects of the invention as set forth in the appended claims, which are to be interpreted in accordance with the principles of patent law, including the doctrine of ~; equivalents.
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1 APP~RATUS AND METHOD FOR ROLL WRAPPING
WITH POLY-COA~ED PAPER
BACKGROUND OF THE INVENTION
The present invention relates to paper manufacturing equipment, and more particularly to roll wrapping machines.
When manufacturing paper, it is common to wrap the completed rolls with a heavy paper for protection during subsequent shipment andJor storage. The paper wrapped about the roll is known as a "roll wrapper" and is typically a kraft paper to protect the paper roll from marking and moisture damage.
Typically, roll wrapping machines use liquid adhesive to secure the roll wrapper about the paper roll.
Exemplary machines are illustrated in U.S. Patents 3,416,491, issued December 17, 1968, to Turnbull et al, ~ enti~led LEADING EDGE GLUER: 2,938,319, issued May 31, 1960, - to Nystrand, entitled APPARATUS FOR HANDLING CYLINDRIC~L
OBJECTS; 2,803,935, issued August 27, 1957, to Gibson, entitled ROLL WRAPPING MACHINE; and 2,746,224, issued May 22, 1956, to Wollett, entitled WRAPPING MACHINE. However, the liquid adhesive applicators are inherently sloppy creating an unsightly wrapped roll. Further, the adhesive applicators requlre maintenance and servicing, resulting in down-time.
The aforementioned problems are overcome in a roll wrapping machine here described eliminating the need for liquid adhesive applicators. More particularly, here described are an apparatus and method for wrapping paper rolls with a paper coated with a thermoplastic, using the softened B
- -`` `` ` 1 327304 , _.
1 thermoplastic as the adhesive to secure the wrapper about the roll.
The present method includes the steps o~ 1) providing a wrapper coated on one side with a thermoplastic, 2) adhering the leading edge of the wrapper to the paper ~: roll by softening the thermoplastic, 3) wrapping the wrapper ,~t.~ about the roll, and 4) adhering the trailing edge of the wrapper to the roll by softening the thermoplastic. The present apparatus includes structure for implementing this defined method.
The presently defined method and apparatus totally eliminate the need for liquid adhesive applicators, and the attendant maintenance, servicing, and down-time. Further, the wrapped rolls have a neat and attractive appearance without liquid glue slopped about the roll wrapper. Third, the poly-coating on the roll wrapper improves moisture pxotection of the roll.
hese and other ob~ects, advantages, and features ; of the invention will be more readily understood and appreciated by reference to the detailed description of a preferred embodiment and the drawings wherein:
Fig. 1 is a front perspective view of a roll wrapping machine embodying the invention;
Fig. 2 is a rear perspective view of the roll wrapping machine;
Figs. 3 6 are side elevational views of the roll wrapping maching illustrating its operation:
Fig. 7 is a plan view of the paper-receiving face of the gripper bar; and Fig. 8 is a sectional view taken along plane VIII-VIII in Fig. 7.
, `
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` -~ ` 1 32730 "~ ,, ~ 1 DETAILED DESCRIPTION QF THE PREFERRED EMBODIMENT
, . .
., A roll wrapping machine constructed as a preferred ~` embodiment of the invention is illustrated in Figs. 1-6 and generally designated 10. Basically, the machine 10 includes a wrapper roll support 12, a wrapper dispensing assembly 14, a gripper bar 16, and a roll support assembly 18. A roll 20 of roll wrapping material is supported on the support 12; and a $~ paper roll 22 to be wrapped is supported on the support assembly ~
18. The roll wrapper material 21 having a thermoplastic coating is dispensed by the assembly 14; and as the wrapper material is dispensed~ the heater bar moves upwardly and downwardly to convey the leading and trailing edges of each wrapper to the paper roll. The gripper bar 16 is heatable to tackify the thermoplastic on the roll wrapper and thereby adhere the roll wrapper to the roll. Only the leading and trailing ~: edges of the wrapper need be heated as will be described.
Wrapper roll support 12, dispensing assembly 14, and roll support assembly 18 are generally well known to those having ordinary skill in the art and will not be described in detail. Exemplary roll wrapping machines ~, incorporating this structure are those sold by Lambs-Gray Harbor Company of Hoaquiam, Washington.
The wrapper roll support 12 is a conventional support comprising an axle supported on a back stand (not shown). optionally, multiple supports can be provided for multiple wrapping rolls to accommodate rolls of varying widths and materials. If multiple rolls are included, a selector mechanism is also provided for selecting the appropriate wrapper material for each paper roll.
The wrapping material roll 20 is rotatably :, suppoxted by the support 12 for subsequent delivery to the ~: 3 !.
~. ~
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r 1 327304 S 1 dispensing assembly 14. In the preferred embodiment, the ~ wrapping material is a 42-pound kraft paper coated with ! ~ polyethylene at a rate of approximately 14.4 pounds per ! basis (i.e. 3,000 square feet). The thermoplaetic S ultimately faces the paper roll 22 to be wrapped.
As used herein, the term "ther~oplastic material"
means polymerized resins which are thermoplastic in nature (i.e. becomes softened and flowable upon heating above their thermal softening point without decomposition).
Thermoplastic~ are a well-known class of material6 and include polymerized olefins (e.g. polyethylene, polypropylene, and polybutylene) and polymerized vinyls ; (e.g. polyvinyl chloride, polyvinyl acetate, and variouB
vinyl polymer3). The major thermoplastic material used in coating paper is polyethylena, for example recycled milk cartons. The so~tening temperature of polyethylene is approximately 280 degrees F.
Although a papsr coated with thermoplastic is utilized in the present invention, it is expected that other ~; 2Q papers coated with other materials which act as he~t-activated adhesives can also be used.
!'. The dispensing assembly 14 includes a pair of f~ed rollers 24a and 24b, a pair o~ guide plates 26a and 26b, and a knlfe 28. The feed roller~ a4 are powered; and the wrapping material 21 extend6 therebetween to be drawn from the roll 20. At least one of the rollers 24a ha~ ~n encoder ; thereon enabling the wrapping machine to ~onitor the length - of paper difipensed from the as~embly 14. Th~ guido plates 26 are gen2rally parallel one ~nother and dsfine a relatively larga open mouth 30 at ~heir upper end to receive the paper from th~ roller~ 24 and guide the paper ~o the gripper bar 16. A knife 28 is ~ounted ~n aonventional -:
1 fashion on plate 26a and includes a mechanism (not `~ specifically shown) for tran~porting the Xnife horizontally ,~i ~ within the slot 32 to cut the wrapping material 21.
~~ The paper roll support 18 include~ a pair of rollers 18a and 18b which are parallel to one another and are powered enabling a paper roll 22 supported thereon to be rotated.
The gripper bar 16 is illustrated in detail in Figs. 7 and 8. The bar includes vacuum ports ~or gripping the paper and a heated ~ace for heating the roll wrapper to tackify the thermoplastic. The heater bar 16 includes a paper receiving face 34 tFig. 7) which receive~ the roll ~ wrapping material thereacross. The face 34 i8 defined by a -~ face plate 36 which is approximately 108 inches long and 8 inches high (note Fig. 7 i8 not to ~cale). A plurality of strip heaters 38 are sandwiched between the face plate 36 and an intermediate plate 40. O~erlying the intermediate plate 40 is an insulation layer 42 and a base plate 44. A
frame plate 46 is spaced from the base plate 44 by leg plates 48 to define a vacuum chamber 50 therebetween. Face plate 36, inter~ediate plata 40, base plate 44, frame plate 46, and leg plate~ 48 are all fabricated of aluminum. Bolts 52 with nuts 54 extend through all components o~ the gripper bar 16 to tia the Qlements together. Preferably, ~urflcient etrip heater~ 38 are included to provide approximately nine watts per square inch over the entire face 34.
A plurality of vacuum ports 56 and 58 extend through thQ face 34 to the vacuum chamber 5Q. The upper row of linearly aligned port~ 56 are all 1/4 inch ln diameter and ~paced on two-inch center~. The lower row o~ ports 58 ~ i~:
~ ~ are all 1~2 inch in diameter and spaced on the same two-inch '~
~ -5-~.~
~`
`: 1 327304 i 1 centers. Each of the lower portY 58 i8 counterbor~d at 60 .; to a diameter of 1 1/8 inch.
The vacuum chambsr 50 is connected in conventienal fashion via a flexible duct 62 to a blower 64. Preferably, the blower 64 is operated to create a vacuum of 27 inche~ in the chamber 50.
As illustrated in Fig. 1, the gripper bar 16 is ~ tran6portable in a cubstantially vertical plane between an ,~ uppermost position 16' (shown in phantom) and a lowermost ~, 10 position 16" (also shown in phantom). The kransportation ~, -~- mechanism for the gripper bar 16 is conventional and well llQWn in the art.
.~
operation The operation of the roll wrapping machine 10 is lS illustrated in Figs. 3-6. First, a paper roll 22 to be ~' wrapped is supported on rollers 18a and 18b. Rollers 24 are actuated to dispense the wrapping ~heet 21 80 that a leading edge portion 21a is positioned ovar the gripper bar facQ 34 (Fig. 3). Th~ arrangement of tha vacuum ports 56 and 58 (see Figs. 7 and 8) is important to insure proper positioning of the paper on the gripper bar race. As the wrapper i8 61id downwardly over the gripper bar face 34, the vacuum provld~d by the small port~ 56 slows the wrapper down wlthout actually etopping it. The greater vacuum provided by the larger ports 58 with the counterbores 60 stops the : wrapper completely and securely grip~ the wrapper.
The gripper bar 16 is then transported to its lower po~ition 16" tangential to tha paper roll 22. The gripper bar 16 holds the leading edge 21a with the thermoplastic against the papar roll. The heat providQd by the gripper bar 16 raisas ~he t~mper tUXQ o~ the thermoplastlc above its ~oftening point so that the '~
~ -6-. -^~ 1 thermoplastic acts as an adhasive to secure the leading edge 21a to the paper roll 22. Gripper bar 16 i8 maintain~d in the position illustrated in Fig. 4 for approximately 9 seconds to insure proper securement o~ the leading edge 2la s.
to the paper roll 22.
Two actions then take place as illustrated in Fig.
5. The gripper bar 16 returns to its uppermost position 16' adjacent the dispensing mechanism 14; while the paper roll 22 is rotated by the rollers 18. Rotation of the roll 22 pu116 the wrapping material 21 about the paper roll and thereby ef~ects wrapping. The encoder (not shown) on roller~ 24 measure~ the paper dispensed from the knife 28 since the last cutting operation. When the proper length has been dispensed, the knife 28 is actuated in conventional fashion to sever a wrappar from the ~aterial 21.
Preferably, the length of the wrapper i~ greater than the circumference of the roll 22 80 that ths tralling adgo Or :``
the wrapper wlll be adhered to ths wrapping as will be describ~d.
Fig. 6 illustrates the complotion of the roll ,, wrapping operation. The gripper bar 16 moves downwardly to its lower po~ition 16" as the roll 22 continues to rotate until the trailing edge 21b i8 positioned over the wrapping material. At thia point, the gripper bar face 34 i8 again tangential to the paper roll 22. The gripper bar is held in `~ thi~ lowar poaition 16'1 again for approximately nine seconds J to insuxe that the so~tenQd or tackifiad thermoplastic pxoperly adheres to the undQrlying layer of wrapping ; material. When wrapping i5 compl~te, gripper bar 16 returns to its uppermo~t po~ition 1~' to receive the new leading edge of the continuou~ web 21.
~: ~ 1 327304 ~ 1 The ends of the wrapper on the roll 22 are crimped y`; in conventional fashion; and headers, or paper disks, may be .L
adhered to either end of the crimped wrapper ends. A
~`~ conventional roll ejector (not shown) is then actuated to . S e;ect the wrapped roll 22 from the support assembly 18.
.~ Embodiments of the present invention totally ., .
eliminate the need for using liquid adhesive applicators with ~ their attendant maintenance, servicing, and down-time problems.
-~; Seccnd, the wrapped rolls are extremely neat and uniformly sealed ~ 10 without unsightly glue overlap or slop. Third, the : ~
poly-coated wrapping paper creates more effective moisture protection than has previously been available.
The above description is that of a preferred embodiment of the invention. Various alterations and changes can be made without departing from the spirit and broader aspects of the invention as set forth in the appended claims, which are to be interpreted in accordance with the principles of patent law, including the doctrine of ~; equivalents.
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Claims
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
A method of wrapping a paper roll comprising:
providing a continuous web of roll wrapping material having a thermoplastic coating on one side thereof;
adhering a leading edge portion of said continuous web to the paper roll by heating the thermoplastic above its softening point in the leading edge portion and contacting the softened thermoplastic to the paper roll;
rotating the paper roll to draw the continuous web about the roll;
cutting a roll wrapper from the continuous web, the roll wrapper having a length greater than the circumference of the roll;
adhering a trailing edge portion of the roll wrapper to the roll wrapper drawn about the paper roll by heating the thermoplastic above its softening point in the trailing edge portion and contacting the softened adhesive to the roll wrapper to complete securement of the roll wrapper about the roll.
A method as defined in claim 1 wherein both of said adhering steps include grasping the appropriate edge portion of the wrapping material with a heatable bar and transporting the grasped portion into contact with the paper roll.
A method as defined in claim 1 wherein the thermoplastic forms a continuous coating on one side of the roll wrapping material to create a continuous vapor barrier on the wrapped roll.
A method of wrapping a paper roll comprising:
providing a roll wrapper having a heat-activated adhesive on one side thereof:
adhering a leading edge portion of the roll wrapper to a paper roll by heat-activating the adhesive in the leading edge portion;
wrapping the roll wrapper about the paper roll;
adhering a trailing edge portion of the roll wrapper to the roll wrapper by heat-activating the adhesive in the trailing edge portion.
A method as defined in claim 4 wherein said heat-activated adhesive comprises a thermoplastic.
A method as defined in claim 5 wherein the thermoplastic is continuously coated on one side of the roll wrapper to form a vapor barrier on the wrapped roll.
A method as defined in claim 4 wherein both of said adhering steps comprise grasping the appropriate portion of the wrapper with a heated bar and moving the bar as necessary to contact the appropriate portion to the paper roll.
An apparatus for wrapping paper rolls comprising:
support means for supporting and selectively rotating a paper roll;
roll wrapper dispensing means for supporting a continuous web of roll wrapper;
a transport bar means for grasping a portion of the roll wrapper and transporting the grasped portion from said dispensing means to a paper roll on said support means, said transport bar being heatable, whereby said transport bar means can be used to activate a heat-activated adhesive on a roll wrapper.
An apparatus as defined in claim 8 wherein said transport bar means defines a gripping face with vacuum ports opening therethrough, said ports varying in at least one of spacing and size to provide different amounts of gripping force at different locations on said gripping face.
An apparatus a defined in claim 9 wherein said dispensing means dispenses said continuous web across said face from a receiving face portion to a releasing face portion, the gripping force in said releasing face portion being greater than in said receiving face portion.
A roll wrapper apparatus comprising:
a roll wrapper dispensing assembly;
a paper roll support assembly; and a heating assembly including a heatable bar for heating portions of a roll wrapper dispensed from the dispensing assembly and for contacting the heated portion with the paper roll, whereby said roll wrapper apparatus can adhere a roll wrapper having a heat-activated adhesive to a paper roll.
A roll wrapper apparatus as defined in claim 11 wherein said heatable bar is a gripper bar for selectively gripping the roll wrapper and heating the portions thereof.
A roll wrapper apparatus as defined in claim 12 wherein said gripper bar includes:
a paper-receiving face; and vacuum means for drawing a partial vacuum against said face, said partial vacuum varying in a selected fashion across said face to control roll wrapper movement thereover.
A method of wrapping a paper roll comprising:
providing a continuous web of roll wrapping material having a thermoplastic coating on one side thereof;
adhering a leading edge portion of said continuous web to the paper roll by heating the thermoplastic above its softening point in the leading edge portion and contacting the softened thermoplastic to the paper roll;
rotating the paper roll to draw the continuous web about the roll;
cutting a roll wrapper from the continuous web, the roll wrapper having a length greater than the circumference of the roll;
adhering a trailing edge portion of the roll wrapper to the roll wrapper drawn about the paper roll by heating the thermoplastic above its softening point in the trailing edge portion and contacting the softened adhesive to the roll wrapper to complete securement of the roll wrapper about the roll.
A method as defined in claim 1 wherein both of said adhering steps include grasping the appropriate edge portion of the wrapping material with a heatable bar and transporting the grasped portion into contact with the paper roll.
A method as defined in claim 1 wherein the thermoplastic forms a continuous coating on one side of the roll wrapping material to create a continuous vapor barrier on the wrapped roll.
A method of wrapping a paper roll comprising:
providing a roll wrapper having a heat-activated adhesive on one side thereof:
adhering a leading edge portion of the roll wrapper to a paper roll by heat-activating the adhesive in the leading edge portion;
wrapping the roll wrapper about the paper roll;
adhering a trailing edge portion of the roll wrapper to the roll wrapper by heat-activating the adhesive in the trailing edge portion.
A method as defined in claim 4 wherein said heat-activated adhesive comprises a thermoplastic.
A method as defined in claim 5 wherein the thermoplastic is continuously coated on one side of the roll wrapper to form a vapor barrier on the wrapped roll.
A method as defined in claim 4 wherein both of said adhering steps comprise grasping the appropriate portion of the wrapper with a heated bar and moving the bar as necessary to contact the appropriate portion to the paper roll.
An apparatus for wrapping paper rolls comprising:
support means for supporting and selectively rotating a paper roll;
roll wrapper dispensing means for supporting a continuous web of roll wrapper;
a transport bar means for grasping a portion of the roll wrapper and transporting the grasped portion from said dispensing means to a paper roll on said support means, said transport bar being heatable, whereby said transport bar means can be used to activate a heat-activated adhesive on a roll wrapper.
An apparatus as defined in claim 8 wherein said transport bar means defines a gripping face with vacuum ports opening therethrough, said ports varying in at least one of spacing and size to provide different amounts of gripping force at different locations on said gripping face.
An apparatus a defined in claim 9 wherein said dispensing means dispenses said continuous web across said face from a receiving face portion to a releasing face portion, the gripping force in said releasing face portion being greater than in said receiving face portion.
A roll wrapper apparatus comprising:
a roll wrapper dispensing assembly;
a paper roll support assembly; and a heating assembly including a heatable bar for heating portions of a roll wrapper dispensed from the dispensing assembly and for contacting the heated portion with the paper roll, whereby said roll wrapper apparatus can adhere a roll wrapper having a heat-activated adhesive to a paper roll.
A roll wrapper apparatus as defined in claim 11 wherein said heatable bar is a gripper bar for selectively gripping the roll wrapper and heating the portions thereof.
A roll wrapper apparatus as defined in claim 12 wherein said gripper bar includes:
a paper-receiving face; and vacuum means for drawing a partial vacuum against said face, said partial vacuum varying in a selected fashion across said face to control roll wrapper movement thereover.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US915,730 | 1986-10-06 | ||
| US06/915,730 US4716709A (en) | 1986-10-06 | 1986-10-06 | Apparatus and method for roll wrapping with poly-coated paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1327304C true CA1327304C (en) | 1994-03-01 |
Family
ID=25436189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000548656A Expired - Fee Related CA1327304C (en) | 1986-10-06 | 1987-10-06 | Apparatus and method for roll wrapping with poly-coated paper |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4716709A (en) |
| CA (1) | CA1327304C (en) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI82010C (en) * | 1988-11-30 | 1991-01-10 | Pesmel Insinoeoeritoimisto | Device combination in a packaging machine |
| US5079898A (en) * | 1988-12-06 | 1992-01-14 | Indeco Products, Inc. | Device and method for wrapping bales of hay or the like with protective material prior to ejection from a baler |
| IT1246210B (en) * | 1990-10-18 | 1994-11-16 | Of Fri S R L Officine Frigerio | AUTOMATIC PERIPHERAL BANDING MACHINE OF ROLLS OF INSTRISCIAL MATERIAL, SUCH AS FABRIC. |
| FI89149C (en) * | 1991-02-12 | 1996-09-11 | Valmet Paper Machinery Inc | Foerfarande och anordning Foer emballering av rullar, i synnerhet pappersrullar, med foerpackningsomslag |
| DE4340515C2 (en) * | 1993-11-29 | 1997-08-28 | Kleinewefers Gmbh | Method and device for packaging a roll of material web |
| DK171214B1 (en) * | 1994-05-13 | 1996-07-29 | Campen A S | Apparatus for use in plastic film packaging of web-shaped material |
| US5564258A (en) * | 1994-11-10 | 1996-10-15 | Lanatech, Inc. | Method and apparatus for holding and wrapping stretch wrap packaging material |
| US5617708A (en) * | 1995-03-13 | 1997-04-08 | Southpac Trust International, Inc. | Floral grouping wrapping apparatus and method |
| US5647193A (en) * | 1995-03-13 | 1997-07-15 | Southpac Trust International, Inc. | Pot wrapping apparatus and method |
| US5617709A (en) * | 1995-03-13 | 1997-04-08 | Southpac Trust International, Inc. | Pot cover forming apparatus and method |
| DE19736497A1 (en) * | 1997-08-22 | 1999-03-04 | Meyer Maschinenfabrik Gmbh Geb | Process for producing a tape roll and device for carrying out the process |
| US7107739B1 (en) * | 2004-12-07 | 2006-09-19 | Five Brothers Properties, Ltd | Cross-feed wrapping apparatus and process |
| US9908648B2 (en) | 2008-01-07 | 2018-03-06 | Lantech.Com, Llc | Demand based wrapping |
| WO2009089279A1 (en) | 2008-01-07 | 2009-07-16 | Lantech. Com, Llc | Electronic control of metered film dispensing in a wrapping apparatus |
| US20110154699A1 (en) * | 2009-08-03 | 2011-06-30 | Avery Dennison Corporation | Preprinted Roll-On Shrink-On Label |
| US20220204198A1 (en) * | 2012-06-18 | 2022-06-30 | TAB Industries, LLC | Exhaust Blower for Orbital Pallet Wrappers |
| CA3109066C (en) | 2012-10-25 | 2023-03-07 | Lantech.Com, Llc | Effective circumference-based wrapping |
| WO2014066757A1 (en) | 2012-10-25 | 2014-05-01 | Lantech.Com, Llc | Rotation angle-based wrapping |
| CA2889579C (en) | 2012-10-25 | 2020-07-14 | Lantech.Com, Llc | Corner geometry-based wrapping |
| CA2901256C (en) | 2013-02-13 | 2017-12-12 | Lantech.Com, Llc | Containment force-based wrapping |
| CA3038441C (en) | 2014-01-14 | 2021-04-27 | Lantech.Com, Llc | Dynamic adjustment of wrap force parameter responsive to monitored wrap force and/or for film break reduction |
| CA2893396C (en) | 2015-04-07 | 2021-11-09 | Cascades Conversion Inc. | Header for packaging a roll of paper |
| CA3106566C (en) | 2018-08-06 | 2023-04-04 | Lantech.Com, Llc | Stretch wrapping machine with curve fit control of dispense rate |
| AU2020346736B2 (en) | 2019-09-09 | 2024-02-22 | Lantech.Com, Llc | Stretch wrapping machine with dispense rate control based on sensed rate of dispensed packaging material and predicted load geometry |
| EP4192740A1 (en) * | 2020-08-07 | 2023-06-14 | Stefano Petri | Method for winding a strip around a product of cylindrical shape and relative winding machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1573669A (en) * | 1924-02-19 | 1926-02-16 | Charles W H Bolingbroke | Package-sealing device |
| US2746224A (en) * | 1952-08-26 | 1956-05-22 | American Viscose Corp | Wrapping machine |
| US2803935A (en) * | 1956-07-19 | 1957-08-27 | Gibson Cedric Marold | Roll wrapping machine |
| US2938319A (en) * | 1957-11-04 | 1960-05-31 | Paper Converting Machine Co | Apparatus for handling cylindrical objects |
| US2962852A (en) * | 1959-04-20 | 1960-12-06 | Einar H Hedquist | Article wrapping machine |
| US3429097A (en) * | 1965-09-17 | 1969-02-25 | Lamb Grays Harbor Co Inc | Wrapper dispensing and roll wrapping mechanism |
| US3416491A (en) * | 1966-10-20 | 1968-12-17 | Lamb Grays Harbor Co Inc | Leading edge gluer |
| NL6916506A (en) * | 1968-11-16 | 1970-05-20 | ||
| US3716964A (en) * | 1970-12-28 | 1973-02-20 | Allis Chalmers Mfg Co | Wrapping sheet dispenser for roll wrapping machine |
| US3719021A (en) * | 1971-02-11 | 1973-03-06 | New Jersey Machine Corp | Packaging machine |
| US3816969A (en) * | 1972-09-25 | 1974-06-18 | Reliance Electric Co | Fully automatic wrapping machine |
| SE407677B (en) * | 1976-10-18 | 1979-04-09 | Gustavsson Olov Erland | KIT AND APPLIANCE FOR SHAPING A PROTECTIVE OIL AROUND A PRISMATIC OR CYLINDRICAL FOREMAL |
| US4189894A (en) * | 1978-08-28 | 1980-02-26 | Curtis & Marble Machine Company | Method of and apparatus for wrapping products |
-
1986
- 1986-10-06 US US06/915,730 patent/US4716709A/en not_active Expired - Lifetime
-
1987
- 1987-10-06 CA CA000548656A patent/CA1327304C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US4716709A (en) | 1988-01-05 |
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