US20020190152A1 - Roll product and winding method - Google Patents
Roll product and winding method Download PDFInfo
- Publication number
- US20020190152A1 US20020190152A1 US10/139,232 US13923202A US2002190152A1 US 20020190152 A1 US20020190152 A1 US 20020190152A1 US 13923202 A US13923202 A US 13923202A US 2002190152 A1 US2002190152 A1 US 2002190152A1
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- United States
- Prior art keywords
- core
- film
- flat board
- sheet
- winding
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H18/00—Winding webs
- B65H18/28—Wound package of webs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/18—Constructional details
- B65H75/22—Constructional details collapsible; with removable parts
- B65H75/2209—Constructional details collapsible; with removable parts collapsible by use of hinged or slidable parts; foldable without removing parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/18—Constructional details
- B65H75/28—Arrangements for positively securing ends of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/41—Winding, unwinding
- B65H2301/414—Winding
- B65H2301/4143—Performing winding process
- B65H2301/41432—Performing winding process special features of winding process
- B65H2301/414325—Performing winding process special features of winding process winding a core in-line with the web, e.g. wound core made out of sheet material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2402/00—Constructional details of the handling apparatus
- B65H2402/40—Details of frames, housings or mountings of the whole handling apparatus
- B65H2402/41—Portable or hand-held apparatus
- B65H2402/412—Portable or hand-held apparatus details or the parts to be hold by the user, e.g. handle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
- B65H2515/12—Density
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/17—Nature of material
- B65H2701/175—Plastic
- B65H2701/1752—Polymer film
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/50—Storage means for webs, tapes, or filamentary material
- B65H2701/51—Cores or reels characterised by the material
- B65H2701/511—Cores or reels characterised by the material essentially made of sheet material
- B65H2701/5112—Paper or plastic sheet material
Definitions
- This invention relates to a roll product of a plastic film such as stretch film for packaging, food wrapping film, or a plastic sheet for e.g. packaging container, wound around a tubular member formed of flat cardboard instead of a paper tube, and a winding method for manufacturing roll products.
- a plastic film such as stretch film for packaging, food wrapping film, or a plastic sheet for e.g. packaging container, wound around a tubular member formed of flat cardboard instead of a paper tube, and a winding method for manufacturing roll products.
- Plastic films and sheets for packaging such as stretch film used to prevent collapse of articles on pallets and food wrapping film are 300 mm to 500 mm wide and usually as long as several hundred meters.
- a paper tube having a high strength is usually used as a core.
- a coreless roll product in which the winding density is increased at the wind-start portion, i.e. the radially central portion of the roll product and the plastic film is wound with the high-density central portion as a core.
- wound film is often in close contact with adjacent layer at the high-density central portion, so that it cannot be used to the last. Thus, this portion becomes a waste. Also, as the end of use becomes near, the shape retainability of the roll itself worsens, so that the work of wrapping the film around an article while pulling the film becomes difficult.
- the stretch film is usually formed of a polyolefin resin having a thickness of about 18 ⁇ m and a width of 500 mm and it is wound onto the core while imparting a tension of 5-8 kg/m, a large residual stress is produced in the stretch film that has been wound onto the core. Therefore, during storage after winding, the core itself may be destroyed by compression, or if it is left in a high-temperature atmosphere for a long time, winding displacement in the axial direction of the core may develop, thus lowering its commercial value.
- An object of this invention is to provide a roll product which does not use a paper tube for its core, which makes it possible to discard the used core without difficulty, which makes it possible to use a wound long strip of sheet or film to the last inch without waste, and which will not develop compressive destruction of the core or winding displacement.
- the core is formed by cylindrically bending a flat board of a material which can be developed into a flat board.
- the core By forming the core by cylindrically bending the flat board, it can be returned to a flat board state after use. Thus it is not so bulky as conventional paper tubes, so that it can be easily discarded or recycled.
- the material for the flat board by selecting one having required strength or rigidity, since the cylindrically bent flat board has shape retainability necessary for the core with the sheet or film wound therearound, it is possible to use up the wound sheet or film to the last.
- the core may be formed by joining together both side edges of the bent flat board.
- the core may be formed with a gap provided between both side edges of the bent flat board.
- the wound sheet or film By forming the core with a gap provided between the side edges of the flat board, the wound sheet or film enters the gap between the side edges of the flat board. By the interposition of the sheet or film, circumferential displacement of both sides is prevented. After winding, in the process of pulling out the sheet or film, the core retains the cylindrical shape and it is possible to prevent its inner diameter from decreasing. This makes it possible for the wound sheet or film to be shape-retained along the core even at the end of use and thus to use it with a tensile force applied to the last.
- the core may be formed with both side edges of the bent flat board abutting each other.
- the sheet or film due to frictional force acting between its end, flat board and the mandrel of the winding machine, even if it is not fastened to the core using an adhesive or the like, the sheet or film can be wound without slipping.
- the flat board is preferably formed of cardboard.
- Two or more flat boards may be used to form a core by putting one on another around the mandrel of a winding machine.
- the wound film is a stretch film, it is preferably wound with the tension during winding restricted such that when a cut having a depth of 10 mm or over is formed in the wound stretch film roll over the entire width in the axial direction, the width of widening of the cut produced due to residual stress in the stretch film is 5 mm or less.
- Caps each having a fitting portion and a flange portion are preferably fitted in both ends of the core.
- the core is radially restricted at both ends, so that its shape retainability improves. Even if the width of the sheet or film increases, in the process of pulling out the sheet or film after winding, it is possible to prevent the inner diameter of the core from decreasing.
- the core is also restricted in the axial direction at its both ends by the flange portions of the caps, in the process of pulling out the sheet or film, it is possible to reliably prevent the core from coming out of the roll of wound sheet or film.
- Both ends of the core preferably protrude from both ends of the wound and superposed sheet or film.
- the caps can be easily fitted in the core. Also, normally, since the flange portions of the caps do not contact the end faces of the wound sheet or film, in the process of using the sheet or film by pulling it out, the ends of the sheet or film will not contact the flange portions of the caps, so that there will be no trouble of pulling out.
- FIG. 1 is a perspective view showing a roll product of an embodiment of this invention
- FIG. 2 is a sectional view of the same
- FIG. 3 is a perspective view showing how the winding is started
- FIG. 4 is a sectional view of the state of FIG. 3;
- FIG. 5 is a sectional view showing the state at an initial stage of winding
- FIG. 6 is a perspective view showing the state in which a core has been formed in the initial stage of winding
- FIG. 7 is a sectional view showing a portion of FIG. 6;
- FIG. 8A is a sectional view showing another embodiment
- FIG. 8B is a sectional view showing a winding start portion of the roll of FIG. 8A;
- FIG. 9A is a sectional view of a still another embodiment
- FIG. 9B is a sectional view showing a portion of the roll of FIG. 9A;
- FIG. 10 is a sectional view showing the roll of a further embodiment
- FIG. 11 is a sectional view showing one example of a core of the roll of another embodiment
- FIG. 12 is a perspective view showing how the core shown in FIG. 11 is formed
- FIG. 13 is a sectional view showing another example of the core
- FIG. 14 is a perspective view showing how the core shown in FIG. 13 is formed
- FIG. 15 is an exploded perspective view showing a roll of another embodiment with caps fitted in both ends of the core;
- FIG. 16 is a longitudinal sectional side view of the roll of FIG. 15;
- FIG. 17 is a sectional view taken along line A-A of FIG. 12;
- FIG. 18 is a perspective view showing how a cut is formed in the roll of stretch film
- FIG. 19 is a sectional view of another embodiment.
- FIG. 20 is a sectional view taken along line A-A of FIG. 19.
- FIGS. 1 and 2 show a roll product 1 embodying the present invention.
- the roll product 1 is made by winding a long strip of plastic sheet or film 4 onto a core formed by bending a flat board 2 of cardboard with a gap 3 formed between side edges thereof, with its end portion 4 a inserted into the inner side of the bent flat board 2 through the gap 3 .
- the tapered end portion 4 a of the rolled sheet or film 4 which is set on a spool 6 of a winding machine, is put on the outer peripheral surface of a mandrel 5 of the winding machine.
- the flat board 2 of cardboard having such a length B that when wound around the mandrel 5 , the gap 3 exists between both side edges, is supplied with its end slightly bent, inside of the sheet or film 4 so as to contact the outer peripheral surface of the mandrel 5 .
- the roll product 1 of a long strip of plastic sheet or film is thus obtained in which as shown in FIGS. 1 and 2 , without using a conventional paper tube, the core 2 a is formed by bending the flat board 2 of cardboard.
- the core 2 a can be developed into a flat board after use.
- the flat board 2 besides paper materials such as cardboard, a sheet of a synthetic resin such as polyethylene or polypropylene can be used.
- the sheet or film disposed in the gap 3 serves as a slip stop.
- both side edges will not slip on each other even if both side edges are not bonded together with an adhesive, so that it is possible to retain the cylindrical shape.
- the core 2 a will not break or shrink. It is also possible to prevent axial displacement of the core 2 a . This makes it possible to use the wound long strip of film or sheet to the last inch with a tensile force applied thereto.
- the end of sheet or film 4 can be caught in the cylinder of the core 2 a merely by putting the end portion 4 a of the film or sheet 4 on the outer periphery of the mandrel 5 , feeding the flat board 2 into inside of the sheet or film in contact with the outer periphery of the mandrel 5 and turning the shaft 7 of the mandrel.
- the slip-stop effect by the end of film caught eliminates the need of bonding the side edges of the flat board together and fastening the end portion 4 a of the film 4 to the core 2 a . This simplifies the winding work for the roll.
- the end portion 4 a of the film 4 may not be tapered as shown in FIG. 3 but be left straight.
- FIGS. 8A and 8B show a roll la of another embodiment in which the length B of the flat board 2 is longer than in the embodiment of FIG. 3 so that its side edges will overlap each other, and the end portion 4 a of the film 4 gets caught through the overlapped portion into inside of the flat board 2 .
- the slip-stop effect by the end portion 4 a of the film 4 caught at the overlapped portion prevents the side edges of the flat board 2 from slipping on each other and prevents the core 2 a from 1 shrinking and prevents axial displacement of the core 2 a .
- the film it is possible to use up the film to the last inch with a suitable tension applied thereto.
- FIGS. 9A and 9B show a roll product 1 b of the third embodiment.
- a flat board 2 of cardboard is placed along the mandrel 5 of the winding machine, and bent so that a gap 3 is present between its both side edges to form a core 2 a , and the end portion of sheet or film 4 is fastened to the core 2 a and the film is wound around the core 2 a.
- the sheet or film 4 is received in the gap 3 between the side edges of the flat board 2 .
- the end portion 4 a of the sheet of film 4 is fastened to the core 2 a , it can be wound without slipping, so that after winding, axial displacement of the core 2 a is prevented.
- FIG. 10 shows a roll product 1 c of the fourth embodiment.
- a flat board 2 of cardboard is cylindrically bent along the mandrel 5 of the winding machine so that both side edges of the thus bent flat board 2 will abut together to form a core 2 a , and the end of the sheet or film 4 is fastened to the core and the film is wound.
- FIG. 11 shows an example of the core 2 a of a roll product of another embodiment. As shown by chain line in FIG. 12, it is formed by cylindrically bending a rectangular flat board 2 and bonding both side edges together with an adhesive 9 .
- FIG. 13 shows another example of the core 2 a . As shown by chain line in FIG. 14, it is formed by cylindrically bending a rectangular flat board 2 and bonding both side edges together with an adhesive tape 10 .
- These flat boards 2 can be cylindrically bent by putting them on a cylinder or mandrel of a winding machine. As described above, by joining both sides, the core 2 a is formed. By winding sheet or film 4 thereon, a roll product can be produced.
- the flat board 2 may be cylindrically bent beforehand, its both sides be joined together and it may be mounted on the mandrel of a winding machine. By joining both sides of the flat board 2 with an adhesive or an adhesive tape, the shape retainability of the core 2 a further improves.
- FIGS. 15 - 17 show a roll product 1 d of the fifth embodiment.
- this roll product 1 d as with the roll product 1 a shown in FIGS. 8A and 8B, on a core 2 a formed by cylindrically bending a flat board 2 of cardboard with an overlap 2 b between both side edges of the flat board 2 , a long strip of sheet or film 4 is wound with its end portion 4 a getting caught into the inner side of the core 2a through between both side edges overlapped.
- caps 8 formed of a synthetic resin are mounted at both ends of the core 2 a .
- Each cap 8 comprises a fitting portion 8 a and a flange portion 8 b provided at one end thereof. Their flange portions 8 b are in abutment with the end faces of the core 2 a . Since both ends of the core 2 a protrude from both ends of the wound sheet or film 4 , gaps s are present between both ends of the sheet or film 4 and the flange portions 8 b of the caps 8 .
- the shape retainability of the core 2 a improves, so that after winding, in the process of unwinding the sheet or film 4 for use, the core 2 a is prevented from shrinking. As the width of the film or sheet increases, this is more effective.
- caps 8 having fitting portions 8 a of different lengths according to the width of the sheet or film, i.e. the length of the core 2 a it is possible to more effectively cope with a wide sheet or film 4 .
- the caps 8 may be fitted into its both ends.
- the caps 8 may be fitted into both ends of the core 2 a.
- the slip stop effect of the sheet or film 4 caught in the gap 3 of the cylindrically bent flat board 2 improves the shape retainability of the core 2 a , in addition to the fact that the caps 8 are fitted.
- the fact that both abutting side edges of the flat board 2 will not slip on each other, as well as the fact that the caps 8 are fitted improves the shape retainability of the core 2 a .
- the core 2 a After winding, in the process of unwinding the sheet or film for use, the core 2 a will not shrink and it is possible to use the wound sheet or film to the last inch with a tensile force applied.
- FIGS. 19 and 20 show another embodiment which is substantially the same in other embodiments except that two flat boards 2 a , 2 b are used to form a core, put one on another around the mandrel of a winding machine.
- One of the flat boards may have a smaller width than the width of the film wound.
- Table 1 shows the results of tests in which the influence of the tension applied to stretch film during winding on winding shrinkage and winding displacement was examined for roll products of stretch film.
- a polyolefin resin stretch film having a thickness of 18 ⁇ m and a width of 500 mm was wound by a winding machine to a length of 300 meters while adjusting the speed between the mandrel 5 and the spool 6 .
- Setting the tension per unit width applied to the stretch film was set to three different values, 8 kg/m, 5 kg/m and 0.5 kg/m, various rolls of stretch film were made by winding it onto paper tubes having different thicknesses and an inner diameter of 3 inches. After leaving them for four hours in a 40° C. atmosphere, they were checked on whether the paper tubes were destroyed due to winding shrinkage or whether winding displacement occurred.
- the core is formed by cylindrically bending a flat board made of cardboard or synthetic resin sheet, it can be returned to a flat board after use. Thus, it is not so bulky as conventional paper tubes and can be easily discarded or recycled.
- both side edges of the flat board are prevented from slipping on each other by providing the gap between both side edges of the cylindrically bent flat board with the end of the film received in the gap, abutting both side edges, or biting the end portion of the sheet or film into the cylinder.
- the core has the shape retainability required.
- the core is restricted in the radial direction, so that the shape retainability improves.
- the width of the sheet or film is large, in the process of using the sheet or film by pulling it out, it is possible to prevent the inner diameter of the core from decreasing.
- the core is restricted in the axial direction, too, at its both ends by the flange portions of the caps, it is possible to reliably prevent the core from moving in the axial direction or from coming out.
Abstract
An improved roll product is proposed in which a long strip of film or sheet is wound on a core without using a conventional paper tube. The core used can be discarded without difficulty. The core is formed by bending a flat board of cardboard into a cylindrical shape. The side edges of the flat board may be spaced apart, butted together or overlapped. The side edges may or may not be joined together. The end of the film gets caught between the side edges of the flat board. This arrangement allows the film wound to be used up to the last inch while applying a tension thereto and without breakage of the core or winding displacement. A cap may be fitted into both ends of the core to increase the shape retainability of the core.
Description
- This invention relates to a roll product of a plastic film such as stretch film for packaging, food wrapping film, or a plastic sheet for e.g. packaging container, wound around a tubular member formed of flat cardboard instead of a paper tube, and a winding method for manufacturing roll products.
- Plastic films and sheets for packaging such as stretch film used to prevent collapse of articles on pallets and food wrapping film are 300 mm to 500 mm wide and usually as long as several hundred meters. Thus, in order to roll it into a roll product, a paper tube having a high strength is usually used as a core.
- In offices where such roll products are used in large amounts, used paper tubes are stocked in large amounts. Since these paper tubes have high strength so as not to collapse during winding, it is impossible to collapse them merely by stomping. Thus, they are bulky and difficult to discard. Also, recycling is not easy.
- In order to solve these problems, a coreless roll product is proposed in which the winding density is increased at the wind-start portion, i.e. the radially central portion of the roll product and the plastic film is wound with the high-density central portion as a core.
- With such a coreless roll product, wound film is often in close contact with adjacent layer at the high-density central portion, so that it cannot be used to the last. Thus, this portion becomes a waste. Also, as the end of use becomes near, the shape retainability of the roll itself worsens, so that the work of wrapping the film around an article while pulling the film becomes difficult.
- Further, if a stretch film is wound, since the stretch film is usually formed of a polyolefin resin having a thickness of about 18 μm and a width of 500 mm and it is wound onto the core while imparting a tension of 5-8 kg/m, a large residual stress is produced in the stretch film that has been wound onto the core. Therefore, during storage after winding, the core itself may be destroyed by compression, or if it is left in a high-temperature atmosphere for a long time, winding displacement in the axial direction of the core may develop, thus lowering its commercial value.
- An object of this invention is to provide a roll product which does not use a paper tube for its core, which makes it possible to discard the used core without difficulty, which makes it possible to use a wound long strip of sheet or film to the last inch without waste, and which will not develop compressive destruction of the core or winding displacement.
- In a roll product of the present invention in which a long strip of sheet or film is wound on a core, the core is formed by cylindrically bending a flat board of a material which can be developed into a flat board.
- By forming the core by cylindrically bending the flat board, it can be returned to a flat board state after use. Thus it is not so bulky as conventional paper tubes, so that it can be easily discarded or recycled.
- Also, as the material for the flat board, by selecting one having required strength or rigidity, since the cylindrically bent flat board has shape retainability necessary for the core with the sheet or film wound therearound, it is possible to use up the wound sheet or film to the last.
- The core may be formed by joining together both side edges of the bent flat board.
- By joining both side edges of the flat board with adhesive or adhesive tape, the shape retainability of the core further improves.
- The core may be formed with a gap provided between both side edges of the bent flat board.
- By forming the core with a gap provided between the side edges of the flat board, the wound sheet or film enters the gap between the side edges of the flat board. By the interposition of the sheet or film, circumferential displacement of both sides is prevented. After winding, in the process of pulling out the sheet or film, the core retains the cylindrical shape and it is possible to prevent its inner diameter from decreasing. This makes it possible for the wound sheet or film to be shape-retained along the core even at the end of use and thus to use it with a tensile force applied to the last.
- The core may be formed with both side edges of the bent flat board abutting each other.
- By abutting both sides of the bent flat board, even if both sides are not joined together using an adhesive or the like, the side edges will not slip on each other. Thus, in the process of pulling out the sheet or film after winding, the core retains the cylindrical shape and it is possible to prevent its diameter from decreasing.
- It is possible to wind the sheet or film with its end portion engaged in the core through between both side edges of the cylindrically bent flat board.
- By biting the end of sheet or film into the core through between side edges of the cylindrically bent flat board, interposition of the sheet or film will serve as a slip stop, thereby preventing circumferential displacement of the core. In the process of pulling the sheet or film after winding, the core can retain the cylindrical shape, its inner diameter will not decrease, and it is possible to prevent the core from moving in the axial direction.
- Further, by the interposition of the sheet or film, due to frictional force acting between its end, flat board and the mandrel of the winding machine, even if it is not fastened to the core using an adhesive or the like, the sheet or film can be wound without slipping.
- When the flat board is cylindrically bent, whether the gap exists between both sides or both sides are superposed, it is possible to bite the end portion of the sheet or film into the core through both sides.
- The flat board is preferably formed of cardboard.
- Generally, for paper, the larger its thickness, the larger its rigidity. Thus, if cardboard is used as the flat board, it is possible to achieve shape retainability required for the core. Also, it can be easily developed into a flat board after use. Thus it can be easily discarded or recycled.
- Two or more flat boards may be used to form a core by putting one on another around the mandrel of a winding machine.
- If the wound film is a stretch film, it is preferably wound with the tension during winding restricted such that when a cut having a depth of 10 mm or over is formed in the wound stretch film roll over the entire width in the axial direction, the width of widening of the cut produced due to residual stress in the stretch film is 5 mm or less.
- When the stretch film is wound, by reducing the residual tension in the stretch film by restricting the tension during winding as small as possible, so that the width of widening of the cut will be 5 mm or less, it is possible to prevent winding shrinkage and winding displacement of the stretch film and shrinkage and axial displacement of the core after winding. Thus, there is no need to use a high-strength core such as conventional paper tubes. Also, even if the roll is left at high temperature for a long time, no winding displacement will occur.
- Caps each having a fitting portion and a flange portion are preferably fitted in both ends of the core.
- In this arrangement, by the fitting portions of the fitted caps, the core is radially restricted at both ends, so that its shape retainability improves. Even if the width of the sheet or film increases, in the process of pulling out the sheet or film after winding, it is possible to prevent the inner diameter of the core from decreasing.
- Since the core is also restricted in the axial direction at its both ends by the flange portions of the caps, in the process of pulling out the sheet or film, it is possible to reliably prevent the core from coming out of the roll of wound sheet or film.
- Further, when handling the roll product, even if one end of the roll product contacts a floor surface, since it does not directly contacts the floor surface, damage to the product is prevented.
- Both ends of the core preferably protrude from both ends of the wound and superposed sheet or film.
- With this arrangement, the caps can be easily fitted in the core. Also, normally, since the flange portions of the caps do not contact the end faces of the wound sheet or film, in the process of using the sheet or film by pulling it out, the ends of the sheet or film will not contact the flange portions of the caps, so that there will be no trouble of pulling out.
- Other features and objects of the present invention will become apparent from the following description made with reference to the accompanying drawings, in which:
- FIG. 1 is a perspective view showing a roll product of an embodiment of this invention;
- FIG. 2 is a sectional view of the same;
- FIG. 3 is a perspective view showing how the winding is started;
- FIG. 4 is a sectional view of the state of FIG. 3;
- FIG. 5 is a sectional view showing the state at an initial stage of winding;
- FIG. 6 is a perspective view showing the state in which a core has been formed in the initial stage of winding;
- FIG. 7 is a sectional view showing a portion of FIG. 6;
- FIG. 8A is a sectional view showing another embodiment;
- FIG. 8B is a sectional view showing a winding start portion of the roll of FIG. 8A;
- FIG. 9A is a sectional view of a still another embodiment;
- FIG. 9B is a sectional view showing a portion of the roll of FIG. 9A;
- FIG. 10 is a sectional view showing the roll of a further embodiment;
- FIG. 11 is a sectional view showing one example of a core of the roll of another embodiment;
- FIG. 12 is a perspective view showing how the core shown in FIG. 11 is formed;
- FIG. 13 is a sectional view showing another example of the core;
- FIG. 14 is a perspective view showing how the core shown in FIG. 13 is formed;
- FIG. 15 is an exploded perspective view showing a roll of another embodiment with caps fitted in both ends of the core;
- FIG. 16 is a longitudinal sectional side view of the roll of FIG. 15;
- FIG. 17 is a sectional view taken along line A-A of FIG. 12;
- FIG. 18 is a perspective view showing how a cut is formed in the roll of stretch film;
- FIG. 19 is a sectional view of another embodiment; and
- FIG. 20 is a sectional view taken along line A-A of FIG. 19.
- Hereinbelow, the embodiments of this invention will be described with reference to the accompanying drawings.
- FIGS. 1 and 2 show a
roll product 1 embodying the present invention. As shown in FIGS. 3 and 4, theroll product 1 is made by winding a long strip of plastic sheet orfilm 4 onto a core formed by bending aflat board 2 of cardboard with agap 3 formed between side edges thereof, with itsend portion 4 a inserted into the inner side of the bentflat board 2 through thegap 3. - As shown in FIGS. 3 and 4, at the start of winding into the
roll product 1, thetapered end portion 4 a of the rolled sheet orfilm 4, which is set on aspool 6 of a winding machine, is put on the outer peripheral surface of amandrel 5 of the winding machine. Next, theflat board 2 of cardboard having such a length B that when wound around themandrel 5, thegap 3 exists between both side edges, is supplied with its end slightly bent, inside of the sheet orfilm 4 so as to contact the outer peripheral surface of themandrel 5. - In this state, when a
rotary shaft 7 of themandrel 5 is rotated in the direction of the arrow, as shown in FIG. 5, theflat board 2 is bent along the outer peripheral surface of themandrel 5 to form acore 2 a and the sheet orfilm 4 is simultaneously wound along the outer surface of thecore 2 a. As shown in FIGS. 6 and 7, with theend portion 4 a of the sheet orfilm 4 caught into the inner side of theflat board 2 through thegap 3 between both side edges of theflat board 2, the sheet orfilm 4 is wound on thecore 2 a with the speeds between themandrel 5 and thespool 6 adjusted so that no excessive tension is applied to it. - The
roll product 1 of a long strip of plastic sheet or film is thus obtained in which as shown in FIGS. 1 and 2, without using a conventional paper tube, thecore 2 a is formed by bending theflat board 2 of cardboard. Thecore 2 a can be developed into a flat board after use. - As the
flat board 2, besides paper materials such as cardboard, a sheet of a synthetic resin such as polyethylene or polypropylene can be used. - The embodiment of this invention has the above- described structure, of which the operation will be described below.
- As described above, since for the
core 2 a, a material that it can be returned to a flat plate, such as cardboard, is selected, it is not so bulky as conventional paper tubes and can be easily discarded or recycled. Also, since the larger the thickness of paper, the higher its rigidity, if cardboard is used as theflat board 2, the shape retainability required as the core is obtained. - Since the end of the sheet or
film 4 is inserted into the inner side of theflat board 2 through thegap 3 between both side edges of theflat board 2, the sheet or film disposed in thegap 3 serves as a slip stop. Thus, both side edges will not slip on each other even if both side edges are not bonded together with an adhesive, so that it is possible to retain the cylindrical shape. Thus, while the sheet or film is being used by unwinding, thecore 2 a will not break or shrink. It is also possible to prevent axial displacement of thecore 2 a. This makes it possible to use the wound long strip of film or sheet to the last inch with a tensile force applied thereto. - As shown in FIGS. 3 and 4, the end of sheet or
film 4 can be caught in the cylinder of thecore 2 a merely by putting theend portion 4 a of the film orsheet 4 on the outer periphery of themandrel 5, feeding theflat board 2 into inside of the sheet or film in contact with the outer periphery of themandrel 5 and turning theshaft 7 of the mandrel. The slip-stop effect by the end of film caught eliminates the need of bonding the side edges of the flat board together and fastening theend portion 4 a of thefilm 4 to thecore 2 a. This simplifies the winding work for the roll. - The
end portion 4 a of thefilm 4 may not be tapered as shown in FIG. 3 but be left straight. - FIGS. 8A and 8B show a roll la of another embodiment in which the length B of the
flat board 2 is longer than in the embodiment of FIG. 3 so that its side edges will overlap each other, and theend portion 4 a of thefilm 4 gets caught through the overlapped portion into inside of theflat board 2. - In this embodiment, too, the slip-stop effect by the
end portion 4 a of thefilm 4 caught at the overlapped portion prevents the side edges of theflat board 2 from slipping on each other and prevents thecore 2 a from 1 shrinking and prevents axial displacement of thecore 2 a. Thus it is possible to use up the film to the last inch with a suitable tension applied thereto. - FIGS. 9A and 9B show a
roll product 1 b of the third embodiment. Aflat board 2 of cardboard is placed along themandrel 5 of the winding machine, and bent so that agap 3 is present between its both side edges to form acore 2 a, and the end portion of sheet orfilm 4 is fastened to thecore 2 a and the film is wound around thecore 2 a. - With this arrangement, as shown in detail in FIG. 9B, the sheet or
film 4 is received in thegap 3 between the side edges of theflat board 2. This prevents circumferential displacement of the side edges, so that in the process of unrolling the sheet orfilm 4, it is possible to prevent the inner diameter of thecore 2 a from decreasing. Also, since theend portion 4 a of the sheet offilm 4 is fastened to thecore 2 a, it can be wound without slipping, so that after winding, axial displacement of thecore 2 a is prevented. Thus it is possible to use the sheet orfilm 4 to the last centimeter with a tensile force applied thereto. - FIG. 10 shows a roll product1 c of the fourth embodiment. A
flat board 2 of cardboard is cylindrically bent along themandrel 5 of the winding machine so that both side edges of the thus bentflat board 2 will abut together to form acore 2 a, and the end of the sheet orfilm 4 is fastened to the core and the film is wound. - In this arrangement, too, even if the abutting both side edges of the
flat board 2 are not bonded with an adhesive, they will not slip on each other. After winding, in the process of unrolling the sheet or film, thecore 2 a will retain its cylindrical shape and will not shrink. Thus, it can be used up to the last millimeter with a tensile force applied thereto. - FIG. 11 shows an example of the
core 2 a of a roll product of another embodiment. As shown by chain line in FIG. 12, it is formed by cylindrically bending a rectangularflat board 2 and bonding both side edges together with an adhesive 9. FIG. 13 shows another example of thecore 2 a. As shown by chain line in FIG. 14, it is formed by cylindrically bending a rectangularflat board 2 and bonding both side edges together with anadhesive tape 10. - These
flat boards 2 can be cylindrically bent by putting them on a cylinder or mandrel of a winding machine. As described above, by joining both sides, thecore 2 a is formed. By winding sheet orfilm 4 thereon, a roll product can be produced. Theflat board 2 may be cylindrically bent beforehand, its both sides be joined together and it may be mounted on the mandrel of a winding machine. By joining both sides of theflat board 2 with an adhesive or an adhesive tape, the shape retainability of thecore 2 a further improves. - FIGS.15-17 show a roll product 1 d of the fifth embodiment. In this roll product 1 d, as with the
roll product 1 a shown in FIGS. 8A and 8B, on acore 2 a formed by cylindrically bending aflat board 2 of cardboard with anoverlap 2 b between both side edges of theflat board 2, a long strip of sheet orfilm 4 is wound with itsend portion 4 a getting caught into the inner side of the core 2a through between both side edges overlapped. - In this roll product id, as shown in FIGS. 15 and 16, at both ends of the
core 2 a, caps 8 formed of a synthetic resin are mounted. Eachcap 8 comprises afitting portion 8 a and aflange portion 8 b provided at one end thereof. Theirflange portions 8 b are in abutment with the end faces of thecore 2 a. Since both ends of thecore 2 a protrude from both ends of the wound sheet orfilm 4, gaps s are present between both ends of the sheet orfilm 4 and theflange portions 8 b of thecaps 8. - Since the
core 2 a is restricted in a radial direction by thefitting portions 8 a of thecaps 8, the shape retainability of thecore 2 a improves, so that after winding, in the process of unwinding the sheet orfilm 4 for use, thecore 2 a is prevented from shrinking. As the width of the film or sheet increases, this is more effective. - By using the
caps 8 havingfitting portions 8 a of different lengths according to the width of the sheet or film, i.e. the length of thecore 2 a, it is possible to more effectively cope with a wide sheet orfilm 4. - Further, since the
fitting portions 8 a of thecaps 8 are fitted in thecore 2 a at both ends thereof with theflange portions 8 b in abutment with the end faces of thecore 2 a, the latter is also restricted in the axial direction. Thus, after winding, in the process of unwinding the sheet orfilm 4, it is possible to reliably prevent thecore 2 a from displacing in the axial direction or from coming off the wound roll product 1 d. - Since the gaps s are present between the
flange portions 8 b of thecaps 8 and the end faces of the wound sheet orfilm 4, after winding, in the process of using the sheet or film by pulling it out, both ends are kept out of contact with theflange portions 8 b. Thus, no trouble will occur if thecaps 8 are fitted. - When handling the roll product, even if one end of the
roll product 1 contacts the floor surface, since the end faces of thecore 2 a or the sheet or film will not directly contact the floor surface, damage to theroll product 1 is prevented. - Even if the length B of the
flat board 2 is selected so that thegap 3 is present between its both side edges, and as shown in FIG. 1, the end of the sheet orfilm 4 is caught through thegap 3 to form thecore 2 a and the film is wound around the core, thecaps 8 may be fitted into its both ends. - Similarly, as shown in FIG. 1, if the
core 2 a is formed so that thegap 3 exists between both side edges of the cylindrically bentflat board 2, the end portion of the sheet orfilm 4 is fastened to thecore 2 a and it is wound around thecore 2 a, the caps may be fitted into both ends of thecore 2 a. In this arrangement, the end of sheet orfilm 4 gets caught in thegap 3 to prevent circumferential displacement of theflat board 2, so that slip-stop effect is achieved. - Further, in the arrangement shown in FIG. 10 in which both side edges of the cylindrically bent
flat board 2 are brought into abutment with each other to form thecore 2 a and theend portion 4 a of the sheet orfilm 4 is fastened to thecore 2 a, thecaps 8 may be fitted into both ends of thecore 2 a. - In the arrangement shown in FIGS. 8A and 8B, the slip stop effect of the sheet or
film 4 caught in thegap 3 of the cylindrically bentflat board 2 improves the shape retainability of thecore 2 a, in addition to the fact that thecaps 8 are fitted. In the arrangement shown in FIG. 10, the fact that both abutting side edges of theflat board 2 will not slip on each other, as well as the fact that thecaps 8 are fitted, improves the shape retainability of thecore 2 a. After winding, in the process of unwinding the sheet or film for use, thecore 2 a will not shrink and it is possible to use the wound sheet or film to the last inch with a tensile force applied. - FIGS. 19 and 20 show another embodiment which is substantially the same in other embodiments except that two
flat boards - Table 1 shows the results of tests in which the influence of the tension applied to stretch film during winding on winding shrinkage and winding displacement was examined for roll products of stretch film.
- In the winding test, a polyolefin resin stretch film having a thickness of 18 μm and a width of 500 mm was wound by a winding machine to a length of 300 meters while adjusting the speed between the
mandrel 5 and thespool 6. Setting the tension per unit width applied to the stretch film was set to three different values, 8 kg/m, 5 kg/m and 0.5 kg/m, various rolls of stretch film were made by winding it onto paper tubes having different thicknesses and an inner diameter of 3 inches. After leaving them for four hours in a 40° C. atmosphere, they were checked on whether the paper tubes were destroyed due to winding shrinkage or whether winding displacement occurred. - The results are as shown in Table 1. For rolls that were wound with as slight tension as 0.5 kg/m applied, a 10 mm-deep cut was formed in the surface of the wound roll of stretch film over the entire width in the axial direction as shown in FIG. 18 and the width of the widening of the cut was measured. The width was 2 mm. This satisfies the condition of this invention that the cut widening width should be 5 mm or less. Thus, even if a thin paper tube having a thickness of 4.5 mm or less, no compressive destruction or no winding displacement occurred.
- In contrast, when the tension at the winding portion was as large as 5 kg/m or 8 kg/m, the cut widening width was 8 mm and 12 mm, respectively. Because of high winding shrinkage due to residual stress of the stretch film, if the thickness of the paper tube was 5 mm or less, compressive destruction occurred in the paper tube. Also, when the rolls were left in a 40° C. atmosphere for 4 hours, winding displacement occurred.
- Thus, by measuring the widening width of a cut formed in the surface of wound stretch film roll over the entire width in the axial direction, it is possible to determine the degree of residual stress in the stretch film, i.e. the degree of winding shrinkage. According to the present invention, since the stretch film is wound with as light tension applied to the stretch film as possible, the residual stress in the stretch film and winding shrinkage decrease. Thus, there is no need to use a high-strength paper tube as the core. Even if one formed by cylindrically bending a flat board of cardboard is used as the core, no compressive destruction of the core due to winding shrinkage will occur. Also, even if left in a high-temperature atmosphere, no winding displacement will occur.
- As explained above, according to this invention, since the core is formed by cylindrically bending a flat board made of cardboard or synthetic resin sheet, it can be returned to a flat board after use. Thus, it is not so bulky as conventional paper tubes and can be easily discarded or recycled.
- Also, both side edges of the flat board are prevented from slipping on each other by providing the gap between both side edges of the cylindrically bent flat board with the end of the film received in the gap, abutting both side edges, or biting the end portion of the sheet or film into the cylinder. Thus the core has the shape retainability required. Thus, after winding, in the process of using the sheet or film by pulling it out, it is possible to prevent the core from shrinking and axial displacement of the core. Thus it is possible to use the wound long strip of sheet or film to the last with a tensile force applied.
- Further, when the end portion of the sheet or film is engaged into the core through between both side edges of the flat board, the work of fastening the end portion to the outer peripheral surface of the core is unnecessary, so that the work of winding the film is simplified.
- Also, since the caps each having the fitting portion and the flange portion are fitted in both ends of the core, the core is restricted in the radial direction, so that the shape retainability improves. Thus, even if the width of the sheet or film is large, in the process of using the sheet or film by pulling it out, it is possible to prevent the inner diameter of the core from decreasing. Also, since the core is restricted in the axial direction, too, at its both ends by the flange portions of the caps, it is possible to reliably prevent the core from moving in the axial direction or from coming out. Thus it is possible to use the sheet or film with a tensile force applied to the last.
- Besides, by measuring the width of widening of a cut formed in the surface of the wound stretch film roll, it is possible to grasp the degree of residual stress in the stretch film, i.e. the degree of winding shrinkage. Thus, by winding the stretch film with as a light tension applied as possible so that the cut widening width will be at a predetermined value, no compressive destruction of the core will occur. Also, even if left in a high- temperature atmosphere for a long time, no winding displacement will occur.
TABLE 1 Thickness of Winding paper pipe tension Cut widening Deformation Winding (mm) (kg/m) width of paper pipe displacement 15 8 12 No Observed 15 5 8 No Observed 15 0.5 2 No No 12 8 12 No Observed 12 5 8 No Observed 12 0.5 2 No No 10 8 12 No Observed 10 5 8 No Observed 10 0.5 2 No No 7 8 12 No Observed 7 5 8 No Observed 7 0.5 2 No No 5 8 12 No Observed 5 5 8 No Observed 5 0.5 2 No No 4.5 8 12 broken Observed 4.5 5 8 broken Observed 4.5 0.5 2 No No 4 8 12 broken Observed 4 5 8 broken Observed 4 0.5 2 No No 3 8 12 broken Observed 3 5 8 broken Observed 3 0.5 2 No No 2 8 12 broken Observed 2 5 8 broken Observed 2 0.5 2 No No 1 8 12 broken Observed 1 5 8 broken Observed 1 0.5 2 No No 0.5 8 12 broken Observed 0.5 5 8 broken Observed 0.5 0.5 2 No No
Claims (14)
1. A roll product formed by winding a long strip of sheet or film on a core, characterized in that said core is formed by bending a flat board into a cylindrical shape, said core being made of a material which can be developed into a flat board after use.
2. A roll product as claimed in claim 1 wherein said flat board has its side edges joined together after bending.
3. A roll product as claimed in claim 1 wherein said core is formed with a gap provided between side edges of said flat board after bending.
4. A roll product as claimed in claim 1 wherein said core is formed with side edges of said flat board overlapping each other after bending.
5. A roll product as claimed in claim 1 wherein said core is formed with side edges of said flat board abutting each other after bending.
6. A roll product as claimed in claim 1 , 3 or 4 wherein the end portion of said film or sheet is caught into said core through between side edges of said bent flat board.
7. A roll product as claimed in any of claims 1-6 wherein said flat board is formed of cardboard.
8. A roll product as claimed in any of claims 1-7 wherein the film is a stretch film and wherein the film is wound with the tension to the film during winding restricted such that when a cut having a depth of 10 mm is formed in the surface of the wound film roll over the entire width, the width of widening of said cut caused due to residual stress in the stretch film will be 5 mm or less.
9. A roll product as claimed in any of claims 1-8 wherein caps each having a fitting portion and a flange portion are fitted in both ends of said core.
10. A roll product as claimed in claim 9 wherein both ends of said core protrude from both ends of said wound sheet or film.
11. A roll product as claimed in any of claims 1-10 wherein a plurality of said flat boards are used to form said core.
12. A method of winding a long strip of sheet or film into a roll product, comprising the steps of placing a flat board along a mandrel of a winding machine, bending said flat board with a gap present between side edges of said flat board to form a core, and winding said sheet or film on said core with its end portion fastened to said core.
13. A method of winding a long strip of sheet or film into a roll product, comprising the steps of placing a flat board along the outer periphery of a mandrel of a winding machine, bending said flat board with its side edges abutting each other to form a core, and winding said sheet or film on said core with its end portion fastened to said core.
14. A method of winding a long strip of sheet or film into a roll product, comprising the steps of placing an end portion of said sheet or film on the outer periphery of a mandrel of a winding machine, feeding a flat board to the inner side of said sheet or film so as to contact the outer peripheral surface of said mandrel to simultaneously wind said flat board and said sheet or film, bending said flat board into a cylindrical shape to form a core, and getting one end of the sheet or film caught into said core through between side edges of the bent flat board.
Applications Claiming Priority (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001-137451 | 2001-05-08 | ||
JP2001137451A JP2002332164A (en) | 2001-05-08 | 2001-05-08 | Roll product |
JP2001141663A JP2002338145A (en) | 2001-05-11 | 2001-05-11 | Roll product |
JP2001-141663 | 2001-05-11 | ||
JP2001-189860 | 2001-06-22 | ||
JP2001189860A JP3579008B2 (en) | 2001-06-22 | 2001-06-22 | Stretch film roll |
JP2001394951A JP2003192236A (en) | 2001-12-26 | 2001-12-26 | Roll product and winding method |
JP2001-394951 | 2001-12-26 | ||
JP2001-394945 | 2001-12-26 | ||
JP2001394945A JP2003192237A (en) | 2001-12-26 | 2001-12-26 | Roll product |
JP2002102689A JP2003292251A (en) | 2002-04-04 | 2002-04-04 | Roll product |
JP2002-102689 | 2002-04-04 |
Publications (1)
Publication Number | Publication Date |
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US20020190152A1 true US20020190152A1 (en) | 2002-12-19 |
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Family Applications (1)
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US10/139,232 Abandoned US20020190152A1 (en) | 2001-05-08 | 2002-05-07 | Roll product and winding method |
Country Status (5)
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US (1) | US20020190152A1 (en) |
EP (1) | EP1256541A3 (en) |
KR (1) | KR20020085834A (en) |
CN (1) | CN1384036A (en) |
AU (1) | AU3703502A (en) |
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US20100320302A1 (en) * | 2009-06-23 | 2010-12-23 | Catbridge Machinery, Llc | In-Line Formed Core Supporting a Wound Web |
US20100327100A1 (en) * | 2009-06-24 | 2010-12-30 | Elsner Engineering Works | Foil roll with wound stiffening core, apparatus for winding the roll and method |
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---|---|---|---|---|
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1942951A (en) * | 1930-02-11 | 1934-01-09 | Baxenden Thomas George | Spool for photographic films |
US1990860A (en) * | 1933-06-30 | 1935-02-12 | Edward D Schive | Stock roll |
US3593938A (en) * | 1969-10-08 | 1971-07-20 | United States Steel Corp | Method and apparatus for processing strip |
US3840194A (en) * | 1972-03-09 | 1974-10-08 | Uniflex | Core plug |
US4659031A (en) * | 1984-01-23 | 1987-04-21 | E & A Enterprises | Inserts and cooperating retaining means for use with web dispensing means |
US6390428B1 (en) * | 1999-02-18 | 2002-05-21 | Riso Kagaku Corporation | Tube core and holders for stencil sheet roll |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3411733A (en) * | 1967-03-14 | 1968-11-19 | Whitehouse Products Inc | Core |
US3770542A (en) * | 1971-08-25 | 1973-11-06 | Johnson & Johnson | Adhesive tape and method |
SE399694B (en) * | 1976-05-19 | 1978-02-27 | Moelnlycke Ab | ROLL OF RAILWAY MATERIAL |
JPS5318883A (en) * | 1976-08-06 | 1978-02-21 | Nitto Electric Ind Co Ltd | Process for preparing tape |
US4372500A (en) * | 1981-02-18 | 1983-02-08 | Alfred Saraisky | Inserts for use with web dispensing means |
DE3314489A1 (en) * | 1983-04-21 | 1984-10-25 | Continental Gummi-Werke Ag, 3000 Hannover | Winding sleeve for rubber strip |
JPS63123762A (en) * | 1986-11-14 | 1988-05-27 | Asahi Chem Ind Co Ltd | Portable wound-up film |
JPH05293608A (en) * | 1992-04-23 | 1993-11-09 | Nippon Steel Corp | Take-up reel for thin sheet casting strip |
AT408650B (en) * | 1992-10-14 | 2002-01-25 | Teufelberger Gmbh | INNER SLEEVE FOR WRAPS |
CA2508489A1 (en) * | 1998-08-07 | 2000-02-07 | Sekisui Jushi Kabushiki Kaisha | Packaging strap coil and method for producing the same, packaging strap coil unit and packaging machine equipped with strap coil reel |
-
2002
- 2002-04-30 AU AU37035/02A patent/AU3703502A/en not_active Abandoned
- 2002-05-06 EP EP02010055A patent/EP1256541A3/en not_active Withdrawn
- 2002-05-07 KR KR1020020025015A patent/KR20020085834A/en not_active Application Discontinuation
- 2002-05-07 US US10/139,232 patent/US20020190152A1/en not_active Abandoned
- 2002-05-08 CN CN02119060A patent/CN1384036A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1942951A (en) * | 1930-02-11 | 1934-01-09 | Baxenden Thomas George | Spool for photographic films |
US1990860A (en) * | 1933-06-30 | 1935-02-12 | Edward D Schive | Stock roll |
US3593938A (en) * | 1969-10-08 | 1971-07-20 | United States Steel Corp | Method and apparatus for processing strip |
US3840194A (en) * | 1972-03-09 | 1974-10-08 | Uniflex | Core plug |
US4659031A (en) * | 1984-01-23 | 1987-04-21 | E & A Enterprises | Inserts and cooperating retaining means for use with web dispensing means |
US6390428B1 (en) * | 1999-02-18 | 2002-05-21 | Riso Kagaku Corporation | Tube core and holders for stencil sheet roll |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8689849B2 (en) * | 2005-05-02 | 2014-04-08 | Fabio Perini, S.P.A. | Device for production of a coreless roll of web material |
US20090101748A1 (en) * | 2005-05-02 | 2009-04-23 | Fabio Perini S.P.A. | Coreless Roll of Web Material, Machine and Method for its Production |
US7992818B2 (en) * | 2005-05-02 | 2011-08-09 | Fabio Perini S.P.A. | Coreless roll of web material, machine and method for its production |
US20120186751A1 (en) * | 2005-05-02 | 2012-07-26 | Fabio Perini S.P.A. | Coreless roll of web material, machine and method for its production |
US20100320302A1 (en) * | 2009-06-23 | 2010-12-23 | Catbridge Machinery, Llc | In-Line Formed Core Supporting a Wound Web |
WO2011005293A3 (en) * | 2009-06-23 | 2011-05-05 | Catbridge Machinery, Llc | In-line formed core supporting a wound web |
US20100327100A1 (en) * | 2009-06-24 | 2010-12-30 | Elsner Engineering Works | Foil roll with wound stiffening core, apparatus for winding the roll and method |
US8540181B2 (en) | 2009-06-24 | 2013-09-24 | Elsner Engineering Works, Inc. | Foil roll with wound stiffening core, apparatus for winding the roll and method |
US10011449B2 (en) | 2010-12-17 | 2018-07-03 | 3M Innovative Properties Company | Open gap film roll core |
US9290348B2 (en) | 2010-12-17 | 2016-03-22 | 3M Innovative Properties Company | Open gap film roll core |
US20130320124A1 (en) * | 2011-01-14 | 2013-12-05 | Alain Rochon | Rolled Sheets of Floor Covering and Manufacture |
US9309078B2 (en) * | 2011-01-14 | 2016-04-12 | Tarkett Inc. | Rolled sheets of floor covering and manufacture |
US20230095152A1 (en) * | 2016-10-12 | 2023-03-30 | Sonoco Development, Inc. | Core with cushion strip and varying slot depth |
US11661305B2 (en) * | 2016-10-12 | 2023-05-30 | Sonoco Development, Inc. | Core with strip or strips of varying density |
US20190330002A1 (en) * | 2016-10-26 | 2019-10-31 | Eastman Performance Films, Llc | Packaged flexible film and flexible film packaging system therefor |
US10894682B2 (en) * | 2016-10-26 | 2021-01-19 | Eastman Performance Films, Llc | Packaged flexible film and flexible film packaging system therefor |
US20230043876A1 (en) * | 2020-11-10 | 2023-02-09 | Showa Denko Materials Co., Ltd. | Reel body, method for manufacturing reel body, and method for manufacturing article |
US11970361B2 (en) * | 2022-12-06 | 2024-04-30 | Sonoco Development, Inc. | Core with cushion strip and varying slot depth |
Also Published As
Publication number | Publication date |
---|---|
EP1256541A2 (en) | 2002-11-13 |
EP1256541A3 (en) | 2003-07-16 |
AU3703502A (en) | 2002-11-14 |
KR20020085834A (en) | 2002-11-16 |
CN1384036A (en) | 2002-12-11 |
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