EP1840063B1 - Film roll - Google Patents
Film roll Download PDFInfo
- Publication number
- EP1840063B1 EP1840063B1 EP06702623A EP06702623A EP1840063B1 EP 1840063 B1 EP1840063 B1 EP 1840063B1 EP 06702623 A EP06702623 A EP 06702623A EP 06702623 A EP06702623 A EP 06702623A EP 1840063 B1 EP1840063 B1 EP 1840063B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- film
- terminal end
- film roll
- roll
- adhesive member
- 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
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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
- B65H19/00—Changing the web roll
- B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
- B65H19/102—Preparing the leading end of the replacement web before splicing operation; Adhesive arrangements on leading end of replacement web; Tabs and adhesive tapes for splicing
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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
- B65H19/00—Changing the web roll
- B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
- B65H19/29—Securing the trailing end of the wound web to the web roll
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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
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/17—Nature of material
- B65H2701/175—Plastic
- B65H2701/1752—Polymer film
Definitions
- the present invention relates to a film roll to be loaded into a packaging machine as a roll unit, on which a packaging material such as a plastic film or the like used for packaging food and other products is wound.
- a packaging machine has been conventionally used in which film is pulled out from a film roll formed by winding a length of film made of resin, and products such as food products are packaged with the film
- JP-A Publication No.558-43295 discloses a packaging machine in which a film roll is loaded and products are packaged. With this machine, a terminal end of the film F at the outermost convolution of the film roll (see F101 in Figure 11(a) ) is a free end, i.e., the end is not held in place (see Figure 3 of the patent document).
- This document describes a mechanism in which the free terminal end of the film hanging down from the loaded film roll is guided to a predetermined position by means of a guide board.
- the terminal end of the film is a free end as described above, it can cause a problem when the film roll is automatically loaded into the packaging machine.
- JP-A Publication H08-9441 discloses a film roll in which the terminal end of the film is held in place and is easily peeled off the same when using the film (see the second and third figures in the patent document).
- This film roll has an opening that is formed at a predetermined distance away from the terminal end of the film, and a tape is attached so as to cover the opening. Accordingly, since the terminal end of the film is not temporarily held in place, the terminal end of the film can be easily peeled off from the film roll, compared to a film roll in which the terminal end of the film is held in place by adhesive tape and the like.
- EP-A-1 428 861 discloses an adhesive tape for joining two materials, especially a new paper roll to the end of an old roll, comprising a paper carrier with a primary adhesive layer on the top and a secondary adhesive layer underneath.
- the primary adhesive layer adheres onto the start of the new material, while the secondary adhesive layer adheres to the old material.
- JP-A-621 36459 discloses an adhesive tape, wherein the inner surfaces of two support material layers are laminated together, so as to allow peeling, by using a low adhesive layer, and a high adhesive layer formed to the outer surface of each of the support material layers.
- JP-A-2004 142806 of the same applicant discloses a laterally sealing mechanism including a rotating shaft, an arm member, and a seal jaw and ironing members.
- the rotating shafts located on both sides of a tubular film are rotated synchronously in the opposite direction to each other.
- an opening must be formed near the terminal end of the film in order to hold the terminal end of the film in place, which may damage the film when a portion of the film is cut to form such an opening.
- an object of the present invention is to provide a film roll in which the terminal end of the film can be temporarily held in place and can also be easily peeled off without damaging the film.
- a film roll according to a first aspect of the present invention is loaded into a packaging machine as a packaging material for packaging products, the film roll comprising a length of film for packaging products, a core around which the length of film is wound, and an adhesive member.
- the adhesive member is provided between a terminal end portion of the film at the outermost convolution of the film roll and a portion of the film on which the terminal end portion overlaps, in order to temporarily hold the terminal end in place. Further, the adhesive member is formed such that it increases in thickness in the direction toward the terminal end.
- the adhesive member is disposed between a terminal end portion of the film and a portion of the film on which the terminal end portion overlaps in order to temporarily hold in place the terminal end of the film at the outermost convolution of the film roll, which is the first portion of the film to be pulled out from the film roll by the packaging machine.
- the adhesive member is formed such that it increases in thickness in the direction toward the terminal end of the film.
- the terminal end of the film rises a few millimeters above the roll unit because of the adhesive member that increases in thickness in the direction toward the terminal end. Therefore, when automatically replacing the film roll, the terminal end of the film rising above the roll unit can be automatically peeled off by the packaging machine, and the film can be conveyed to a film splice device such as an autosplicer. As a result, it is possible to provide a film roll that does not need to be processed, and yet enables the terminal end of the film to be easily and mechanically peeled off by the packaging machine compared to conventional film rolls. Therefore, adopting the present invention to a packaging machine that automatically joins films is effective, especially in terms of improving operational efficiency.
- the adhesive member is formed such that it increases in thickness toward the terminal end of the film, it is possible to minimize the amount that a portion of the film, excluding the terminal end thereof, rises above the film roll. Therefore, it is possible to prevent problems, such as loosening of the film or damage to the film, which may occur during conveyance of the film roll.
- terminal end portion of the film here refers to a band-shaped portion having a width of a few centimeters, which is parallel to the terminal end of the film.
- the terminal end of the film refers to the end of the length of film at the outermost convolution of the film roll wound around the core.
- a film roll according to a second aspect of the present invention is the film roll according to the first aspect of the present invention, wherein the adhesive member is a double-sided tape.
- a double-sided tape is used as the adhesive member for temporarily holding the terminal end of the film in place.
- the terminal end of the film can be temporarily held in place with an easy and inexpensive means.
- the adhesive member for temporarily holding the film in place is a low viscosity adhesive which provides adhesion that is not as strong as regular double-sided tape. Accordingly, the terminal end of the film can be reliably temporarily held in place and be easily pulled out after the film roll is automatically loaded into the packaging machine.
- a film roll according to a third aspect of the present invention is the film roll according to the first aspect of the present invention, wherein the adhesive member comprises a plurality of micro-suction cups, which are formed by introducing numerous fine air bubbles into a resin.
- the adhesive member for temporarily holding the terminal end of the film in place comprises a plurality of micro-suction cups. Accordingly, the terminal end of the film can be easily temporarily held with adequate adhesion and also be easily pulled out without any residual adhesive remaining on the film.
- a film roll according to a fourth aspect of the present invention is the film roll according to any one of the first through third aspects of the present invention, wherein the adhesive member is formed such that the area in contact with the film decreases in size toward the terminal end portion of the film.
- the adhesive member is formed such that the area in contact with the film decreases in size in the direction toward the terminal end of the film. Accordingly, adhesion becomes weaker toward the terminal end of the film, and the terminal end of the film can be easily pulled out when needed.
- a film roll according to a fifth aspect of the present invention is the film roll according to any one of the first through fourth aspects of the present invention, wherein the adhesive member has a surface in contact with the terminal end portion side of the film and a surface in contact with a portion of the film on which the terminal end portion overlaps, and either one of the surfaces has weaker adhesion than the other surface.
- the level of adhesion will be different between one surface in contact with the terminal end portion side of the film and the other surface in contact with the film roll side (the side having a portion of the film on which the terminal end portion overlaps).
- the present invention provides a film roll that does not need to be processed, and yet enables the terminal end of the film to be easily and mechanically peeled off by the packaging machine compared to conventional film rolls.
- a film roll 9 which will be described in a later part of the following description, one end of a film F, which is the starting point of the winding around a paper tube (core) 9a, is referred to as a beginning end F0, and the other end of the film F at the outermost convolution of the film roll 9 when the film F is completely wound around the paper tube 9a is referred to as an terminal end F1.
- a vertical bag packaging machine 3 is a machine in which potato chips or other food products to be packaged are wrapped with a film formed into a tubular shape, and then sealed lengthwise and widthwise so as to manufacture a bag.
- the material to be packaged is basically dropped in a predetermined quantity from a weighing machine 2 provided above the bag packaging machine 3.
- the weighing machine 2 is a combination weighing machine that includes a feeder, a pool hopper 24, a weighing hopper 25, and a collecting and discharging chute 26.
- the bag packaging machine 3 includes a bag packaging unit 5 (see Figure 3 ), which is the main portion that bags the material to be packaged, a film supply unit 6 that supplies a film F to be made into a bag to the bag packaging unit 5, and a control unit 90 (see Figure 2 ) that controls the movement of the drive portions of the bag packaging unit 5 and the film supply unit 6.
- the film supply unit 6 is a unit that supplies the film F in sheet form to a forming mechanism 13 (see Figure 3 ) of the bag packaging unit 5, and is disposed adjacent to the bag packaging unit 5. With this film supply unit 6, after a film roll 9 formed by winding the film F is conveyed from a stockroom by a conveying device which is not shown, the film roll 9 is loaded therein, and the film F is unreeled from the film roll 9.
- the film F unreeled from the film roll 9 is delivered by operation of a delivery motor 6a (see Figure 2 ) that rotates the film roll 9, and is pulled and conveyed to the bag packaging unit 5 by operation of a pair of conveying belts 6c and a pull-down belt mechanism 14 of the bag packaging unit 5, which will be described below.
- the film supply unit 6 includes: a pawl member 6b for automatically pulling out the end of the film F, i.e., the terminal end F1 of the film F from the film roll 9; the pair of conveying belts 6c that convey the terminal end F1 of the film F that is pulled out from the film roll 9 by means of the pawl member 6b to an autosplicer 6d; and the autosplicer (film splice device) 6d that joins the beginning end F0 of the film F of a film roll that was immediately previously loaded and the terminal end F1 of a film roll 9 that is newly loaded to replace the old film roll.
- a pawl member 6b for automatically pulling out the end of the film F, i.e., the terminal end F1 of the film F from the film roll 9
- the pair of conveying belts 6c that convey the terminal end F1 of the film F that is pulled out from the film roll 9 by means of the pawl member 6b to an autosplicer 6d
- the pawl member 6b is disposed such that the distal end thereof is capable of moving to a position close to the film surface of the film roll 9.
- the distal end of the pawl member 6b is moved to the position close to the film surface of the film roll 9.
- the film roll 9 is rotated by the delivery motor 6a, and consequently it will be possible to automatically pull out the terminal end F1 of the film F rising about 0.5 mm to 1.0 mm above the film surface of the film roll 9 from the film roll 9 because of an adhesive member 9b that will be described below.
- the pair of conveying belts 6c use two conveying belts together, which comprise a drive roller, a driven roller, and a annular belt to sandwich the film F between the two conveying belts and convey the film F.
- the pair of conveying belts 6c sandwiches the terminal end F1 of the film which was pulled out from the film roll 9 by means of the pawl member 6b, and conveys the film F to the autosplicer 6d (in the direction of the dashed line arrow shown in Figure 6 ).
- the autosplicer 6d draws the end (beginning end F0) of the film F by suction and closely holds the end thereof in the direction of the solid arrow shown in Figure 6 , when all the film F is delivered from the film roll 9. Then, the film F pulled out from a newly loaded film roll 9 is also drawn by suction and closely held in the direction of the same solid arrow shown in Figure 6 . Subsequently, the beginning end F0 of the film F of the previously loaded film roll 9 and the terminal end F1 of the film F of the newly loaded film roll 9 are automatically joined together. In this way, the very end (beginning end F0) of the immediately previously loaded film roll 9 is joined to the terminal end F1 of the newly loaded film roll 9. Consequently, it will be possible to continuously supply the film F to the bag packaging machine 3 even when the film roll 9 is replaced.
- the bag packaging unit 5 has a forming mechanism 13 that forms the film F that is delivered in a sheet form into a tubular shape, a pull-down belt mechanism 14 that conveys the tubular-shaped film F (hereinafter referred to as tubular film Fm) downward, a vertical sealing mechanism 15 that seals the overlapping portions of the tubular film Fm lengthwise, and a transverse sealing mechanism 17 that seals the top and bottom ends of the bag B by sealing the tubular film Fm widthwise.
- a forming mechanism 13 that forms the film F that is delivered in a sheet form into a tubular shape
- a pull-down belt mechanism 14 that conveys the tubular-shaped film F (hereinafter referred to as tubular film Fm) downward
- a vertical sealing mechanism 15 that seals the overlapping portions of the tubular film Fm lengthwise
- a transverse sealing mechanism 17 that seals the top and bottom ends of the bag B by sealing the tubular film Fm widthwise.
- the forming mechanism 13 has a tube 13b and a former 13a.
- the tube 13b is a cylindrical-shaped member and is open at the top and bottom ends.
- a material to be packaged C that has been weighed by the weighing machine 2 is dropped into the opening at the top end of the tube 13b.
- the former 13a is disposed so as to enclose the tube 13b.
- the shape of the former 13a is formed such that the sheet-like film F that is unreeled from the film roll 9 is formed into a tubular shape as the film F passes between the former 13a and the tube 13b (see Figure 3 ).
- the tube 13b and the former 13a of the forming mechanism 13 can be replaced with ones with different sizes, according to the size of the bags to be manufactured.
- the pull-down belt mechanism 14 is a mechanism in which the tubular film Fm wound around the tube 13b is held by suction and conveyed downward. As shown in Figure 3 , the pull-down belt mechanism 14 has belts 14c that sandwich the tube 13b from both the left and right sides. With the pull-down belt mechanism 14, the belts 14c, which function to hold the film F by suction, are rotated by a driving roller 14a and a driven roller 14b so as to convey the tubular film Fm downward. Note that in Figure 3 , an illustration of a roller drive motor that rotates the driving roller 14a and the other members has been omitted.
- the vertical sealing mechanism 15 is a mechanism that heats and seals lengthwise the overlapping portions of the tubular film Fm that is wound around the tube 13b, while pressing the overlapping portions against the tube 13b with a specific amount of pressure.
- This vertical sealing mechanism 15 is positioned on the front side of the tube 13b, and has a heater, and a heater belt that is heated by the heater, and comes in contact with the overlapping portions of the tubular film Fm.
- the vertical sealing mechanism 15 also has a drive apparatus for moving the heater belt toward and away from the tube 13b.
- the transverse sealing mechanism 17 which is described for a better understanding of the invention is disposed underneath the forming mechanism 13, the pull-down belt mechanism 14, and the vertical sealing mechanism 15.
- the transverse sealing mechanism 17 is a mechanism that includes a pair of sealing jaws 51 that accommodate the heater (see Figure 3 ).
- the transverse sealing mechanism 17 further comprises a sealing jaws moving mechanism 160 that move the pair of sealing jaws 51 toward and away from each other; an oscillating carriage 110 on which the sealing jaws moving mechanism 160 and the sealing jaws 51 are mounted; and an oscillation mechanism 170 that rotates (oscillates) the oscillating carriage 110 about the rotational axis O-O.
- the pair of sealing jaws 51 includes a front sealing jaw 51a and a back sealing jaw 51b.
- the pair of sealing jaws 51 is supported at a front end portion 110a of the oscillating carriage 110 such that the front sealing jaw 51a and the back sealing jaw 51b are located respectively in front and back of the tubular film Fm.
- the pair of sealing jaws 51 is configured to press against each other to hold the tubular film Fm therebetween and to seal, by application of pressure and heat, the portions of the tubular film Fm that will be the top and bottom ends of the bags.
- the inside of one of the sealing jaws 51 has a built-in cutter, which is not shown. This cutter is positioned at the center of the transverse sealing portion of the sealing jaws 51 in the height direction, and serves to cut the bag B away from the following tubular film Fm.
- the oscillating carriage 110 is pivotally supported by bearings 158, 159 such that the oscillating carriage 110 rotates about the rotational axis O-O (see Figure 5 ). Specifically, a left oscillation axis member 158a and a right oscillation axis member 159a that respectively extend to the left and right from the oscillating carriage 110 are pivotally supported by the bearings 158, 159.
- the oscillating carriage 110 extends substantially horizontally forward and backward from the rotational axis 0-0.
- the sealing jaws 51 are disposed at the front end portion 110a, and a force receiving unit 115 that receives the force of a rod 175 of the oscillation mechanism 170 is disposed at a back end portion 110b.
- the oscillating carriage 110 mainly comprises left and right frames 111, 112, and coupling members 113, 114 which couple the left and right frames 111, 112 at the center and rear thereof.
- the force receiving unit 115 is fixed to the coupling member 114, specifically at the horizontal central portion of the coupling member 114 (see Figure 4 ).
- a left oscillation axis member 158a and a right oscillation axis member 159a are respectively fixed to the left and right frames 111, 112, specifically at the outer sides of the central portions of the left and right frames 111, 112 in the front and back direction.
- the sealing jaws moving mechanism 160 is a mechanism configured to move the pair of sealing jaws 51 such that they come in contact with and move away from the tubular film Fm, and the sealing jaws moving mechanism 160 is incorporated in the oscillating carriage 110.
- the sealing jaws moving mechanism 160 mainly comprises a drive unit 161, and a linking mechanism that converts the rotational force from the drive unit 161 into a reciprocating forward and backward motion of the front sealing jaw 51a and the back sealing jaw 51b.
- This linking mechanism mainly comprises a rotation plate 162; a front coupling member 163; a back coupling member 164; a back sealing jaw fixing member 165; a horizontal connecting bar 166; front and back bars 168 that extend forward from both the left and right ends of the horizontal connecting bar 166; and a front sealing jaw fixing member 169 that couples the front and back bars 168 at their ends.
- the drive unit 161 is formed by a jaw pressing motor 161a and a speed reducer 161b, and is disposed lengthwise such that the rotary shaft extends in the vertical direction.
- the drive unit 161 includes a mounting plate on the speed reducer 161b that is disposed on the top side of the jaws-pressing motor 161a.
- the mounting plate is fastened by a bolt at the central portion of the coupling member 113 of the oscillating carriage 110.
- the drive unit 161 is fixed so as to hang from substantially the central portion of oscillating carriage 110.
- the jaw pressing motor 161 a and the speed reducer 161 b of the drive unit 161 are located under the rotational axis O-O. In other words, the jaw pressing motor 161a and the speed reducer 161b of the drive unit 161 overlap with the rotational axis 0-0 when viewed in plan.
- the rotation plate 162 is fixed to an output rotary shaft that protrudes from the top of the speed reducer 161b of the drive unit 161.
- the front coupling member 163 is pivotally supported by a pin member 163a at one end of a rotation plate 162, and the back coupling member 164 is pivotally supported by a pin member 164a at the other end of the rotation plate 162.
- the horizontal central portion of the back sealing jaw fixing member 165 is supported at a front end of the front coupling member 163 by a pivotal pin member 163b, and the both left and right ends of the back sealing jaw fixing member 165 are fixed to the slide members 167 that can slide forward and backward along the front and back bars 168. Further, the back sealing jaw 51b is fixed to the back sealing jaw fixing member 165.
- the horizontal central portion of the horizontal connecting bar 166 is pivotally supported at a rear end of the back coupling member 164 by a pin member 164b.
- Each of the front and back bars 168 extends forward from both left and right ends of the horizontal connecting bar 166.
- These front and back bars 168 are supported by four slide supporting members 168a that are fixed to the central portions and the front portions of the left and right frames 111, 112 of the oscillating carriage 110 such that the front and back bars 168 are capable of freely sliding forward and backward along the oscillating carriage 110.
- the front sealing jaw fixing member 169 extends horizontally so as to couple the distal ends of the front and back bars 168 on the left and right sides of the front sealing jaw fixing member 169, and fixes the front sealing jaw 5 1 a in place.
- the oscillation mechanism 170 imparts a vertical reciprocating force on the oscillating carriage 110, and as shown by arrow A3 in Figure 4 , the oscillation mechanism 170 rotates (oscillates) the oscillating carriage 110 about the rotational axis 0-0.
- This oscillation mechanism 170 mainly comprises an oscillation drive unit 172 and a crank mechanism that converts the rotational force of the oscillation drive unit 172 into a vertical reciprocating motion.
- the crank mechanism mainly comprises an off-center support board 173 and a rod 175.
- the oscillation drive unit 172 comprises an oscillation motor 172a and a speed reducer 172b.
- the oscillation drive unit 172 is fixed to the fixing member 154 so as to hang therefrom so that the rotary shaft of the oscillation drive unit 172 extends horizontally.
- Both left and right ends of the fixing member 154 are respectively fixed to beam members 151, 152, and the beam members 151, 152 are integrated with a fixing frame of the bag packaging machine 3 via different beam members 153, 155, and the like.
- an off-center support board 173 Fixed to the output rotary shaft of the speed reducer 172b of the oscillation drive unit 172 is an off-center support board 173 shown in Figure 4 .
- the central portion thereof is fixed to the output rotary shaft of the speed reducer 172b.
- the off-center support board 173 pivotally supports an upper end of the rod 175 via a pin member 174 at a position deviated from the central portion, i.e., the center of rotation of the off-center support board 173. Therefore, when the off-center support board 173 rotates, the upper end of the rod 175 will revolve around the center of rotation of the horizontally disposed oscillation drive unit 172.
- a lower end of the rod 175 is pin-supported by the force receiving unit 115 of the oscillating carriage 110 via a pin member 176.
- This force receiving unit 115 is capable of freely revolving about the rotational axis 0-0 of the oscillating carriage 110.
- the rod 175 can be manually extended and retracted, and the angle of rotation of the oscillating carriage 110 can be changed by adjusting the length of the rod 175. In this way, by changing the angle of rotation of the oscillating carriage 110, ultimately it will be possible to change the distance of vertical movement of the sealing jaws 51 that are disposed at the front end portion 110a of the oscillating carriage 110.
- the control device 90 performs various types of control for the weighing machine 2 and the bag packaging machine 3.
- the control device 90 comprises a CPU, ROM, RAM, and the like. According to operations and settings inputted from operating switches 7 and a touch panel display 8 shown in Figures 1 and 2 , the control device 90 controls the delivery motor 6a that rotates the film roll 9 in the film supply unit 6 in order to unreel the film F, the drive portion of each mechanism of the bag packaging unit 5, and the like. In addition, the control device 90 controls the driving of the feeder of the weighing machine 2, the pool hopper 24, the weighing hopper 25, and the like. Further, the control device 90 acquires necessary information from the sensors in the weighing machine 2 and the bag packaging machine 3, and uses this information in the various types of control.
- control device 90 can also control an intermittent operation for intermittent weighing, bag manufacturing, and packaging.
- the film F is intermittently supplied from the film supply unit 6 to the bag packaging unit 5 in the bag packaging machine 3, and the bags are intermittently manufactured in the bag packaging unit 5.
- the control device 90 when the control device 90 controls the oscillation motor 172a of the oscillation mechanism 170, the control device 90 will repeat a first control mode for rotating the oscillation motor 172a in a forward direction and a second control mode for rotating the oscillation motor 172a in a reverse direction. However, if it is possible to achieve appropriate oscillation control with only one of the first control mode or the second control mode, oscillation control will be performed in order to keep the oscillation motor 172a rotating in the same direction.
- the film roll 9 such as the one shown in Figures 8(a) or Figure 8(b) is used as a film roll to be loaded into the bag packaging machine 3.
- the film roll 9 of the present embodiment comprises a length of film F that is wound around a paper tube 9a, and an adhesive member 9b having a plurality of micro-suction cups on both surfaces thereof for temporarily holding the terminal end F1 of the film F in place.
- an adhesive member 9b having a plurality of micro-suction cups on both surfaces thereof for temporarily holding the terminal end F1 of the film F in place.
- an adhesive member 9b for temporarily holding the terminal end F1 of the film F in place is disposed between the reverse side of a portion (the side that touches the film F) that is within 10-20 mm from the terminal end F1 of the film F (toward the upstream in the conveying direction of the film F, i.e., toward the beginning end F0 of the film F) and the front side of a portion of the film roll 9 on which the terminal end F1 overlaps (the side that touches the terminal end F1 portion).
- the adhesive member 9b is formed so as to increase in thickness in the direction from the inside of the film roll 9 toward the terminal end F1. Therefore, in the film roll 9 of the present embodiment, the terminal end F1 of the film F can be raised up from the film surface of the film roll 9 by about 0.5 to 1.0 mm.
- the adhesive member 9b which is formed by introducing numerous fine air bubbles into a resin such as acrylic emulsion resin.
- the adhesive member 9b having this type of structure will temporarily hold the terminal end F1 of the film F in place with a low viscosity adhesive that has weaker adhesion than a regular adhesive tape. Accordingly, in regular use, it is possible to prevent the terminal end F1 of the film F from being peeled off from the film roll 9. Meanwhile, once the film roll 9 is loaded, it is possible to hold the terminal end F1 on the film roll 9 with adhesion such that the terminal end F1 of the film F can be easily peeled off from the film roll by means of the pawl member 6b.
- micro-suction cup sheet is more advantageous than an adhesive material such as a regular double-sided tape, because the terminal end F1 of the film F can be temporarily held in place repeatedly with adequate adhesion and residual adhesive will not remain on the film F.
- the film roll 9 in this embodiment is a film roll formed by winding a length of film F around the paper tube 9a, and is automatically loaded into the bag packaging machine 3.
- the adhesive member 9b for temporarily holding the terminal end F1 of the film F in place is disposed at a portion within 10-20 mm from the terminal end F1 of the film F, and between the reverse side of the terminal end F1 portion and the front side of a portion of the film F on which the terminal end F1 overlaps.
- the adhesive member 9b is formed so as to increase in thickness from the inside of the film F toward the terminal end F1.
- the terminal end F1 of the film F can be raised up from the film surface of the film roll 9 by about 0.5 to 1.0 mm. Therefore, compared to a film roll in which the terminal end of the film is temporarily held in place with a conventional adhesive tape, the film roll 9 allows the terminal end F1 of the film to be easily and automatically pulled out by the bag packaging machine 3 by means of the pawl member 6b and the like. In addition, even if the adhesive member 9b is inserted underneath the terminal end F1 portion of the film roll 9, since the adhesive member 9b is formed such that it increases in thickness from the inside of the film F toward the terminal end F1, it is possible to prevent a portion of the film F, excluding the terminal end F1, from rising above the surface of the film F.
- the terminal end F1 of the film F is raised up only by the amount minimally necessary, and it will consequently be possible to avoid a problem such as loosening of the film F. Further, since the terminal end of the film F does not need to be processed, the risk of damaging the film F will be avoided, and it is consequently possible to provide a film roll that is suitable for a bag packaging machine 3 in which the processes from automatically loading the film roll 9 to starting the operation of the machine are automated.
- a micro-suction cup sheet that is formed by introducing numerous fine air bubbles into a resin such as acrylic emulsion resin is used as the adhesive member 9b.
- the terminal end F1 of the film F can be temporary held on the surface of the film F repeatedly with adequate adhesion. Further, since adhesion is provided by the suction cups, it is possible to prevent residual adhesive from remaining on the film F, unlike a case in which a double-sided tape is used as an adhesive member.
- micro-suction cups for temporarily holding the terminal end F1 of the film roll 9, because the terminal end F1 can be temporary held in place repeatedly with adequate adhesion and residual adhesive will not remain on the film F.
- an adhesive member 9d that is triangular in plan view may be used.
- the adhesive member 9d shown in Figure 9 is formed such that the apex of the triangle faces the terminal end F1 of the film F.
- the adhesive member 9d is disposed such that the adhesion area decreases in size in the direction toward the terminal end F1 of the film F, the adhesion thereof will weaken from the downstream side to the terminal end F1. Accordingly, the terminal end F1 can be more easily pulled out from the film roll 9.
- the terminal end F1 can be easily pulled out from the film roll 9 by means of the pawl member 6b.
- a film roll as shown in Figure 10 may be used in which the terminal end F1 of the film is formed in a shape such that both side portions of the terminal end are cut out and only the central portion thereof is left.
- the film roll of the present invention does not need to be processed, and yet the terminal end of the film thereon can be easily and mechanically peeled off by a packaging machine. Because of this effect, in particular, the film roll of the present invention is widely applicable to packaging machines in which processes from loading a film roll to a setting the film roll are automated.
Landscapes
- Containers And Plastic Fillers For Packaging (AREA)
- Replacement Of Web Rolls (AREA)
- Wrappers (AREA)
- Storage Of Web-Like Or Filamentary Materials (AREA)
- Adhesive Tapes (AREA)
- Making Paper Articles (AREA)
Abstract
Description
- The present invention relates to a film roll to be loaded into a packaging machine as a roll unit, on which a packaging material such as a plastic film or the like used for packaging food and other products is wound.
- A packaging machine has been conventionally used in which film is pulled out from a film roll formed by winding a length of film made of resin, and products such as food products are packaged with the film
- For example,
JP-A Publication No.558-43295(published on September 26,1983 Figure 11(a) ) is a free end, i.e., the end is not held in place (seeFigure 3 of the patent document). This document describes a mechanism in which the free terminal end of the film hanging down from the loaded film roll is guided to a predetermined position by means of a guide board. However, when the terminal end of the film is a free end as described above, it can cause a problem when the film roll is automatically loaded into the packaging machine. - To address this problem, a method for holding the terminal end of the film on the roll side by using an adhesive tape and the like has been adopted (see 109b of
Figure 11(b) ) as a method for temporarily holding the terminal end of the film of a film roll on the roll side. However, when the terminal end of the film is temporarily held in place by using an adhesive tape and the like, the terminal end not being a free end poses no problem until the film is in use (during automatically loading of the film and the like), but it has been very difficult to have the packaging machine mechanically peel off the adhesive tape when the terminal end of the film needs to be pulled out from the film roll in order to be used. Therefore, the adhesive tape needs to be peeled off manually, and it may be an obstacle in terms of facilitating a complete automation of the packaging machine, such as automatic film roll loading and automatic film splicing. -
JP-A Publication H08-9441 (published on January 31,1996 -
EP-A-1 428 861 discloses an adhesive tape for joining two materials, especially a new paper roll to the end of an old roll, comprising a paper carrier with a primary adhesive layer on the top and a secondary adhesive layer underneath. The primary adhesive layer adheres onto the start of the new material, while the secondary adhesive layer adheres to the old material. -
JP-A-621 36459 -
JP-A-2004 142806 - However, the conventional film rolls described above have the following problem.
- Specifically, with the film roll disclosed in patent document
JP A-H08-9441 - In view of the above, an object of the present invention is to provide a film roll in which the terminal end of the film can be temporarily held in place and can also be easily peeled off without damaging the film.
- A film roll according to a first aspect of the present invention is loaded into a packaging machine as a packaging material for packaging products, the film roll comprising a length of film for packaging products, a core around which the length of film is wound, and an adhesive member. The adhesive member is provided between a terminal end portion of the film at the outermost convolution of the film roll and a portion of the film on which the terminal end portion overlaps, in order to temporarily hold the terminal end in place. Further, the adhesive member is formed such that it increases in thickness in the direction toward the terminal end.
- Here, in the film roll that is formed by winding a length of film to be loaded into a packaging machine, the adhesive member is disposed between a terminal end portion of the film and a portion of the film on which the terminal end portion overlaps in order to temporarily hold in place the terminal end of the film at the outermost convolution of the film roll, which is the first portion of the film to be pulled out from the film roll by the packaging machine. Further, with the film roll of the present invention, the adhesive member is formed such that it increases in thickness in the direction toward the terminal end of the film.
- Accordingly, the terminal end of the film rises a few millimeters above the roll unit because of the adhesive member that increases in thickness in the direction toward the terminal end. Therefore, when automatically replacing the film roll, the terminal end of the film rising above the roll unit can be automatically peeled off by the packaging machine, and the film can be conveyed to a film splice device such as an autosplicer. As a result, it is possible to provide a film roll that does not need to be processed, and yet enables the terminal end of the film to be easily and mechanically peeled off by the packaging machine compared to conventional film rolls. Therefore, adopting the present invention to a packaging machine that automatically joins films is effective, especially in terms of improving operational efficiency.
- In addition, since the adhesive member is formed such that it increases in thickness toward the terminal end of the film, it is possible to minimize the amount that a portion of the film, excluding the terminal end thereof, rises above the film roll. Therefore, it is possible to prevent problems, such as loosening of the film or damage to the film, which may occur during conveyance of the film roll.
- Note that the terminal end portion of the film here refers to a band-shaped portion having a width of a few centimeters, which is parallel to the terminal end of the film. The terminal end of the film refers to the end of the length of film at the outermost convolution of the film roll wound around the core.
- A film roll according to a second aspect of the present invention is the film roll according to the first aspect of the present invention, wherein the adhesive member is a double-sided tape.
- Here, a double-sided tape is used as the adhesive member for temporarily holding the terminal end of the film in place.
- Consequently, the terminal end of the film can be temporarily held in place with an easy and inexpensive means. Note that it is preferable that the adhesive member for temporarily holding the film in place is a low viscosity adhesive which provides adhesion that is not as strong as regular double-sided tape. Accordingly, the terminal end of the film can be reliably temporarily held in place and be easily pulled out after the film roll is automatically loaded into the packaging machine.
- A film roll according to a third aspect of the present invention is the film roll according to the first aspect of the present invention, wherein the adhesive member comprises a plurality of micro-suction cups, which are formed by introducing numerous fine air bubbles into a resin.
- Here, the adhesive member for temporarily holding the terminal end of the film in place comprises a plurality of micro-suction cups. Accordingly, the terminal end of the film can be easily temporarily held with adequate adhesion and also be easily pulled out without any residual adhesive remaining on the film.
- A film roll according to a fourth aspect of the present invention is the film roll according to any one of the first through third aspects of the present invention, wherein the adhesive member is formed such that the area in contact with the film decreases in size toward the terminal end portion of the film.
- Here, the adhesive member is formed such that the area in contact with the film decreases in size in the direction toward the terminal end of the film. Accordingly, adhesion becomes weaker toward the terminal end of the film, and the terminal end of the film can be easily pulled out when needed.
- A film roll according to a fifth aspect of the present invention is the film roll according to any one of the first through fourth aspects of the present invention, wherein the adhesive member has a surface in contact with the terminal end portion side of the film and a surface in contact with a portion of the film on which the terminal end portion overlaps, and either one of the surfaces has weaker adhesion than the other surface.
- Here, of the surfaces of the adhesive member in contact with the film, the level of adhesion will be different between one surface in contact with the terminal end portion side of the film and the other surface in contact with the film roll side (the side having a portion of the film on which the terminal end portion overlaps).
- In this way, by weakening the adhesion on one of the surfaces in contact with the film, the terminal end of the film that is temporarily held in place can be easily released and pulled out.
- The present invention provides a film roll that does not need to be processed, and yet enables the terminal end of the film to be easily and mechanically peeled off by the packaging machine compared to conventional film rolls.
-
-
Figure 1 is a schematic perspective view of a bag packaging machine and a weighing machine representing background art. - Figure is a control block diagram of the bag packaging machine.
- Figure is a perspective diagram schematically illustrating a bag packaging unit of the bag packaging machine.
-
Figure 4 is a partial perspective side view of a transverse sealing mechanism. -
Figure 5 is a plan view of the transverse sealing mechanism. -
Figure 6 is a sectional side view illustrating an internal configuration of a film supply unit included in the bag packaging machine shown inFigure 1 . -
Figure 7 is an enlarged view of section A inFigure 6 . -
Figure 8(a) is a perspective view illustrating the configuration of a film roll to be loaded into the bag packaging machine according to an embodiment of the present invention. -
Figure 8(b) is a sectional side view illustrating the film roll shown inFigure 8(a) . -
Figure 9 is a perspective view illustrating an example of a film roll according to another embodiment of the present invention. -
Figure 10 is a perspective view illustrating another example of a film roll according to another embodiment of the present invention. , -
Figure 11(a) and Figure 11(b) are perspective views illustrating conventional film rolls. -
- 3
- bag packaging machine (packaging machine)
- 5
- bag packaging unit
- 6
- film supply unit
- 6a
- delivery motor
- 6b
- pawl member
- 6d
- autosplicer
- 6c
- pair of conveying belts
- 9
- film roll
- 9a
- paper tube (core)
- 9b
- adhesive member
- 9d
- adhesive member
- 13
- formation mechanism
- 15
- vertical sealing mechanism
- 17
- transverse sealing mechanism
- 90
- control device
- F
- film
- F0
- beginning end
- F1
- terminal end
- A bag packaging machine loaded with a film roll according to an embodiment of the present invention will now be described with reference to
Figure 1 through Figure 8(b) . - Note that regarding a
film roll 9 which will be described in a later part of the following description, one end of a film F, which is the starting point of the winding around a paper tube (core) 9a, is referred to as a beginning end F0, and the other end of the film F at the outermost convolution of thefilm roll 9 when the film F is completely wound around thepaper tube 9a is referred to as an terminal end F1. - As shown in
Figure 1 , a verticalbag packaging machine 3 is a machine in which potato chips or other food products to be packaged are wrapped with a film formed into a tubular shape, and then sealed lengthwise and widthwise so as to manufacture a bag. - The material to be packaged is basically dropped in a predetermined quantity from a weighing
machine 2 provided above thebag packaging machine 3. The weighingmachine 2 is a combination weighing machine that includes a feeder, apool hopper 24, a weighinghopper 25, and a collecting and dischargingchute 26. - The
bag packaging machine 3 includes a bag packaging unit 5 (seeFigure 3 ), which is the main portion that bags the material to be packaged, afilm supply unit 6 that supplies a film F to be made into a bag to thebag packaging unit 5, and a control unit 90 (seeFigure 2 ) that controls the movement of the drive portions of thebag packaging unit 5 and thefilm supply unit 6. - The
film supply unit 6 is a unit that supplies the film F in sheet form to a forming mechanism 13 (seeFigure 3 ) of thebag packaging unit 5, and is disposed adjacent to thebag packaging unit 5. With thisfilm supply unit 6, after afilm roll 9 formed by winding the film F is conveyed from a stockroom by a conveying device which is not shown, thefilm roll 9 is loaded therein, and the film F is unreeled from thefilm roll 9. - The film F unreeled from the
film roll 9 is delivered by operation of adelivery motor 6a (seeFigure 2 ) that rotates thefilm roll 9, and is pulled and conveyed to thebag packaging unit 5 by operation of a pair of conveyingbelts 6c and a pull-downbelt mechanism 14 of thebag packaging unit 5, which will be described below. - In addition, as shown in
Figures 6 and7 , thefilm supply unit 6 includes: apawl member 6b for automatically pulling out the end of the film F, i.e., the terminal end F1 of the film F from thefilm roll 9; the pair of conveyingbelts 6c that convey the terminal end F1 of the film F that is pulled out from thefilm roll 9 by means of thepawl member 6b to anautosplicer 6d; and the autosplicer (film splice device) 6d that joins the beginning end F0 of the film F of a film roll that was immediately previously loaded and the terminal end F1 of afilm roll 9 that is newly loaded to replace the old film roll. - As shown in
Figure 7 , thepawl member 6b is disposed such that the distal end thereof is capable of moving to a position close to the film surface of thefilm roll 9. As anew film roll 9 is loaded, the distal end of thepawl member 6b is moved to the position close to the film surface of thefilm roll 9. In this state, thefilm roll 9 is rotated by thedelivery motor 6a, and consequently it will be possible to automatically pull out the terminal end F1 of the film F rising about 0.5 mm to 1.0 mm above the film surface of thefilm roll 9 from thefilm roll 9 because of anadhesive member 9b that will be described below. - The pair of conveying
belts 6c use two conveying belts together, which comprise a drive roller, a driven roller, and a annular belt to sandwich the film F between the two conveying belts and convey the film F. The pair of conveyingbelts 6c sandwiches the terminal end F1 of the film which was pulled out from thefilm roll 9 by means of thepawl member 6b, and conveys the film F to theautosplicer 6d (in the direction of the dashed line arrow shown inFigure 6 ). - The
autosplicer 6d draws the end (beginning end F0) of the film F by suction and closely holds the end thereof in the direction of the solid arrow shown inFigure 6 , when all the film F is delivered from thefilm roll 9. Then, the film F pulled out from a newly loadedfilm roll 9 is also drawn by suction and closely held in the direction of the same solid arrow shown inFigure 6 . Subsequently, the beginning end F0 of the film F of the previously loadedfilm roll 9 and the terminal end F1 of the film F of the newly loadedfilm roll 9 are automatically joined together. In this way, the very end (beginning end F0) of the immediately previously loadedfilm roll 9 is joined to the terminal end F1 of the newly loadedfilm roll 9. Consequently, it will be possible to continuously supply the film F to thebag packaging machine 3 even when thefilm roll 9 is replaced. - Note that the configuration of the
film roll 9 will be described below. - As shown in
Figure 3 , thebag packaging unit 5 has a formingmechanism 13 that forms the film F that is delivered in a sheet form into a tubular shape, a pull-downbelt mechanism 14 that conveys the tubular-shaped film F (hereinafter referred to as tubular film Fm) downward, avertical sealing mechanism 15 that seals the overlapping portions of the tubular film Fm lengthwise, and atransverse sealing mechanism 17 that seals the top and bottom ends of the bag B by sealing the tubular film Fm widthwise. - The forming
mechanism 13 has atube 13b and a former 13a. Thetube 13b is a cylindrical-shaped member and is open at the top and bottom ends. A material to be packaged C that has been weighed by the weighingmachine 2 is dropped into the opening at the top end of thetube 13b. The former 13a is disposed so as to enclose thetube 13b. The shape of the former 13a is formed such that the sheet-like film F that is unreeled from thefilm roll 9 is formed into a tubular shape as the film F passes between the former 13a and thetube 13b (seeFigure 3 ). In addition, thetube 13b and the former 13a of the formingmechanism 13 can be replaced with ones with different sizes, according to the size of the bags to be manufactured. - The pull-down
belt mechanism 14 is a mechanism in which the tubular film Fm wound around thetube 13b is held by suction and conveyed downward. As shown inFigure 3 , the pull-downbelt mechanism 14 hasbelts 14c that sandwich thetube 13b from both the left and right sides. With the pull-downbelt mechanism 14, thebelts 14c, which function to hold the film F by suction, are rotated by a drivingroller 14a and a drivenroller 14b so as to convey the tubular film Fm downward. Note that inFigure 3 , an illustration of a roller drive motor that rotates the drivingroller 14a and the other members has been omitted. - The
vertical sealing mechanism 15 is a mechanism that heats and seals lengthwise the overlapping portions of the tubular film Fm that is wound around thetube 13b, while pressing the overlapping portions against thetube 13b with a specific amount of pressure. Thisvertical sealing mechanism 15 is positioned on the front side of thetube 13b, and has a heater, and a heater belt that is heated by the heater, and comes in contact with the overlapping portions of the tubular film Fm. Although not shown in the figure, thevertical sealing mechanism 15 also has a drive apparatus for moving the heater belt toward and away from thetube 13b. - The
transverse sealing mechanism 17 which is described for a better understanding of the invention is disposed underneath the formingmechanism 13, the pull-downbelt mechanism 14, and thevertical sealing mechanism 15. Thetransverse sealing mechanism 17 is a mechanism that includes a pair of sealingjaws 51 that accommodate the heater (seeFigure 3 ). - Although an illustration thereof has been omitted in
Figure 3 , as shown inFigures 4 and5 , thetransverse sealing mechanism 17 further comprises a sealingjaws moving mechanism 160 that move the pair of sealingjaws 51 toward and away from each other; anoscillating carriage 110 on which the sealingjaws moving mechanism 160 and the sealingjaws 51 are mounted; and anoscillation mechanism 170 that rotates (oscillates) theoscillating carriage 110 about the rotational axis O-O. - The pair of sealing
jaws 51 includes afront sealing jaw 51a and aback sealing jaw 51b. The pair of sealingjaws 51 is supported at afront end portion 110a of theoscillating carriage 110 such that thefront sealing jaw 51a and theback sealing jaw 51b are located respectively in front and back of the tubular film Fm. As described below, the pair of sealingjaws 51 is configured to press against each other to hold the tubular film Fm therebetween and to seal, by application of pressure and heat, the portions of the tubular film Fm that will be the top and bottom ends of the bags. - In addition, the inside of one of the sealing
jaws 51 has a built-in cutter, which is not shown. This cutter is positioned at the center of the transverse sealing portion of the sealingjaws 51 in the height direction, and serves to cut the bag B away from the following tubular film Fm. - The
oscillating carriage 110 is pivotally supported bybearings oscillating carriage 110 rotates about the rotational axis O-O (seeFigure 5 ). Specifically, a leftoscillation axis member 158a and a rightoscillation axis member 159a that respectively extend to the left and right from theoscillating carriage 110 are pivotally supported by thebearings oscillating carriage 110 extends substantially horizontally forward and backward from the rotational axis 0-0. The sealingjaws 51 are disposed at thefront end portion 110a, and aforce receiving unit 115 that receives the force of arod 175 of theoscillation mechanism 170 is disposed at aback end portion 110b. - The
oscillating carriage 110 mainly comprises left andright frames coupling members right frames force receiving unit 115 is fixed to thecoupling member 114, specifically at the horizontal central portion of the coupling member 114 (seeFigure 4 ). In addition, a leftoscillation axis member 158a and a rightoscillation axis member 159a are respectively fixed to the left andright frames right frames - The sealing
jaws moving mechanism 160 is a mechanism configured to move the pair of sealingjaws 51 such that they come in contact with and move away from the tubular film Fm, and the sealingjaws moving mechanism 160 is incorporated in theoscillating carriage 110. The sealingjaws moving mechanism 160 mainly comprises adrive unit 161, and a linking mechanism that converts the rotational force from thedrive unit 161 into a reciprocating forward and backward motion of thefront sealing jaw 51a and theback sealing jaw 51b. This linking mechanism mainly comprises arotation plate 162; afront coupling member 163; aback coupling member 164; a back sealingjaw fixing member 165; a horizontal connectingbar 166; front andback bars 168 that extend forward from both the left and right ends of the horizontal connectingbar 166; and a front sealingjaw fixing member 169 that couples the front andback bars 168 at their ends. - The
drive unit 161 is formed by ajaw pressing motor 161a and aspeed reducer 161b, and is disposed lengthwise such that the rotary shaft extends in the vertical direction. Thedrive unit 161 includes a mounting plate on thespeed reducer 161b that is disposed on the top side of the jaws-pressingmotor 161a. The mounting plate is fastened by a bolt at the central portion of thecoupling member 113 of theoscillating carriage 110. In other words, thedrive unit 161 is fixed so as to hang from substantially the central portion ofoscillating carriage 110. In addition, as clearly shown inFigure 5 , thejaw pressing motor 161 a and thespeed reducer 161 b of thedrive unit 161 are located under the rotational axis O-O. In other words, thejaw pressing motor 161a and thespeed reducer 161b of thedrive unit 161 overlap with the rotational axis 0-0 when viewed in plan. - The
rotation plate 162 is fixed to an output rotary shaft that protrudes from the top of thespeed reducer 161b of thedrive unit 161. Thefront coupling member 163 is pivotally supported by apin member 163a at one end of arotation plate 162, and theback coupling member 164 is pivotally supported by apin member 164a at the other end of therotation plate 162. The horizontal central portion of the back sealingjaw fixing member 165 is supported at a front end of thefront coupling member 163 by apivotal pin member 163b, and the both left and right ends of the back sealingjaw fixing member 165 are fixed to theslide members 167 that can slide forward and backward along the front and back bars 168. Further, theback sealing jaw 51b is fixed to the back sealingjaw fixing member 165. The horizontal central portion of the horizontal connectingbar 166 is pivotally supported at a rear end of theback coupling member 164 by apin member 164b. Each of the front and back bars 168 extends forward from both left and right ends of the horizontal connectingbar 166. These front andback bars 168 are supported by fourslide supporting members 168a that are fixed to the central portions and the front portions of the left andright frames oscillating carriage 110 such that the front andback bars 168 are capable of freely sliding forward and backward along theoscillating carriage 110. Further, the front sealingjaw fixing member 169 extends horizontally so as to couple the distal ends of the front and back bars 168 on the left and right sides of the front sealingjaw fixing member 169, and fixes thefront sealing jaw 5 1 a in place. - The
oscillation mechanism 170 imparts a vertical reciprocating force on theoscillating carriage 110, and as shown by arrow A3 inFigure 4 , theoscillation mechanism 170 rotates (oscillates) theoscillating carriage 110 about the rotational axis 0-0. Thisoscillation mechanism 170 mainly comprises anoscillation drive unit 172 and a crank mechanism that converts the rotational force of theoscillation drive unit 172 into a vertical reciprocating motion. The crank mechanism mainly comprises an off-center support board 173 and arod 175. - The
oscillation drive unit 172 comprises anoscillation motor 172a and aspeed reducer 172b. Theoscillation drive unit 172 is fixed to the fixingmember 154 so as to hang therefrom so that the rotary shaft of theoscillation drive unit 172 extends horizontally. Both left and right ends of the fixingmember 154 are respectively fixed tobeam members beam members bag packaging machine 3 viadifferent beam members - Fixed to the output rotary shaft of the
speed reducer 172b of theoscillation drive unit 172 is an off-center support board 173 shown inFigure 4 . On one side of the off-center support board 173, the central portion thereof is fixed to the output rotary shaft of thespeed reducer 172b. On the opposite side, the off-center support board 173 pivotally supports an upper end of therod 175 via apin member 174 at a position deviated from the central portion, i.e., the center of rotation of the off-center support board 173. Therefore, when the off-center support board 173 rotates, the upper end of therod 175 will revolve around the center of rotation of the horizontally disposedoscillation drive unit 172. On the other hand, a lower end of therod 175 is pin-supported by theforce receiving unit 115 of theoscillating carriage 110 via apin member 176. Thisforce receiving unit 115 is capable of freely revolving about the rotational axis 0-0 of theoscillating carriage 110. Thus, when theoscillation motor 172a is actuated and the off-center support board 173 starts rotating, therod 175 moves theforce receiving unit 115 in the vertical direction, and theoscillating carriage 110 starts rotating about the rotational axis O-O. - Note that the
rod 175 can be manually extended and retracted, and the angle of rotation of theoscillating carriage 110 can be changed by adjusting the length of therod 175. In this way, by changing the angle of rotation of theoscillating carriage 110, ultimately it will be possible to change the distance of vertical movement of the sealingjaws 51 that are disposed at thefront end portion 110a of theoscillating carriage 110. - The
control device 90 performs various types of control for the weighingmachine 2 and thebag packaging machine 3. Thecontrol device 90 comprises a CPU, ROM, RAM, and the like. According to operations and settings inputted from operating switches 7 and atouch panel display 8 shown inFigures 1 and2 , thecontrol device 90 controls thedelivery motor 6a that rotates thefilm roll 9 in thefilm supply unit 6 in order to unreel the film F, the drive portion of each mechanism of thebag packaging unit 5, and the like. In addition, thecontrol device 90 controls the driving of the feeder of the weighingmachine 2, thepool hopper 24, the weighinghopper 25, and the like. Further, thecontrol device 90 acquires necessary information from the sensors in the weighingmachine 2 and thebag packaging machine 3, and uses this information in the various types of control. - In addition to controlling the continuous operation for continuous weighing, bag manufacturing, and packaging, the
control device 90 can also control an intermittent operation for intermittent weighing, bag manufacturing, and packaging. In the intermittent operation control, the film F is intermittently supplied from thefilm supply unit 6 to thebag packaging unit 5 in thebag packaging machine 3, and the bags are intermittently manufactured in thebag packaging unit 5. - Further, when the
control device 90 controls theoscillation motor 172a of theoscillation mechanism 170, thecontrol device 90 will repeat a first control mode for rotating theoscillation motor 172a in a forward direction and a second control mode for rotating theoscillation motor 172a in a reverse direction. However, if it is possible to achieve appropriate oscillation control with only one of the first control mode or the second control mode, oscillation control will be performed in order to keep theoscillation motor 172a rotating in the same direction. - In the present embodiment, the
film roll 9 such as the one shown inFigures 8(a) or Figure 8(b) is used as a film roll to be loaded into thebag packaging machine 3. - Specifically, the
film roll 9 of the present embodiment comprises a length of film F that is wound around apaper tube 9a, and anadhesive member 9b having a plurality of micro-suction cups on both surfaces thereof for temporarily holding the terminal end F1 of the film F in place. By temporarily holding the terminal end F1 of the film F with respect to thefilm roll 9, it is possible to prevent a problem caused by the terminal end F1 of the film F becoming separated from thefilm roll 9 during conveyance of thefilm roll 9. - As shown in
Figures 8(a) and 8(b) , anadhesive member 9b for temporarily holding the terminal end F1 of the film F in place is disposed between the reverse side of a portion (the side that touches the film F) that is within 10-20 mm from the terminal end F1 of the film F (toward the upstream in the conveying direction of the film F, i.e., toward the beginning end F0 of the film F) and the front side of a portion of thefilm roll 9 on which the terminal end F1 overlaps (the side that touches the terminal end F1 portion). As shown inFigure 8(b) , theadhesive member 9b is formed so as to increase in thickness in the direction from the inside of thefilm roll 9 toward the terminal end F1. Therefore, in thefilm roll 9 of the present embodiment, the terminal end F1 of the film F can be raised up from the film surface of thefilm roll 9 by about 0.5 to 1.0 mm. - Therefore, it is possible to prevent a portion of the film F inward of where the
adhesive member 9b is attached from becoming raised up from the surface of thefilm roll 9, and consequently instances of the film F becoming damaged and other such problems can be avoided. Accordingly, only the terminal end F1 is raised up from the film surface of thefilm roll 9 by the amount minimally necessary, and it will consequently be possible to obtain afilm roll 9 which is easily pulled out without damaging the film F of thefilm roll 9. - It is possible to use a micro-suction cup sheet having a 100 to 300 µm thickness as the
adhesive member 9b, which is formed by introducing numerous fine air bubbles into a resin such as acrylic emulsion resin. Theadhesive member 9b having this type of structure will temporarily hold the terminal end F1 of the film F in place with a low viscosity adhesive that has weaker adhesion than a regular adhesive tape. Accordingly, in regular use, it is possible to prevent the terminal end F1 of the film F from being peeled off from thefilm roll 9. Meanwhile, once thefilm roll 9 is loaded, it is possible to hold the terminal end F1 on thefilm roll 9 with adhesion such that the terminal end F1 of the film F can be easily peeled off from the film roll by means of thepawl member 6b. - Note that the above-described micro-suction cup sheet is more advantageous than an adhesive material such as a regular double-sided tape, because the terminal end F1 of the film F can be temporarily held in place repeatedly with adequate adhesion and residual adhesive will not remain on the film F.
- (1) The
film roll 9 in this embodiment is a film roll formed by winding a length of film F around thepaper tube 9a, and is automatically loaded into thebag packaging machine 3. With thisfilm roll 9, theadhesive member 9b for temporarily holding the terminal end F1 of the film F in place is disposed at a portion within 10-20 mm from the terminal end F1 of the film F, and between the reverse side of the terminal end F1 portion and the front side of a portion of the film F on which the terminal end F1 overlaps. Theadhesive member 9b is formed so as to increase in thickness from the inside of the film F toward the terminal end F1. - Accordingly, the terminal end F1 of the film F can be raised up from the film surface of the
film roll 9 by about 0.5 to 1.0 mm. Therefore, compared to a film roll in which the terminal end of the film is temporarily held in place with a conventional adhesive tape, thefilm roll 9 allows the terminal end F1 of the film to be easily and automatically pulled out by thebag packaging machine 3 by means of thepawl member 6b and the like. In addition, even if theadhesive member 9b is inserted underneath the terminal end F1 portion of thefilm roll 9, since theadhesive member 9b is formed such that it increases in thickness from the inside of the film F toward the terminal end F1, it is possible to prevent a portion of the film F, excluding the terminal end F1, from rising above the surface of the film F. Therefore, the terminal end F1 of the film F is raised up only by the amount minimally necessary, and it will consequently be possible to avoid a problem such as loosening of the film F. Further, since the terminal end of the film F does not need to be processed, the risk of damaging the film F will be avoided, and it is consequently possible to provide a film roll that is suitable for abag packaging machine 3 in which the processes from automatically loading thefilm roll 9 to starting the operation of the machine are automated. - (2) With the
film roll 9 in this embodiment, a micro-suction cup sheet that is formed by introducing numerous fine air bubbles into a resin such as acrylic emulsion resin is used as theadhesive member 9b. - Accordingly, the terminal end F1 of the film F can be temporary held on the surface of the film F repeatedly with adequate adhesion. Further, since adhesion is provided by the suction cups, it is possible to prevent residual adhesive from remaining on the film F, unlike a case in which a double-sided tape is used as an adhesive member.
- (A) The above embodiment is described using an example in which the terminal end F1 of the film F of the
film roll 9 is temporarily held in place by the micro-suction cups of theadhesive member 9b. However, the present invention is not limited thereto. - For example, it is possible to use a low viscosity double-sided tape instead of the micro-suction cups. Consequently, it will be possible to temporarily hold the terminal end of the
film roll 9 using an adhesive member that is relatively inexpensive compared to the micro-suction cups. Note that, when using a double-sided tape as an adhesive member, it is preferable to use a low viscosity double-sided tape that has weaker adhesion than regular double-sided tape. Consequently, it will be possible to easily pull out the terminal end F1 of the film F from thefilm roll 9. - However, as in the above embodiment 1, it is especially preferable to use micro-suction cups for temporarily holding the terminal end F1 of the
film roll 9, because the terminal end F1 can be temporary held in place repeatedly with adequate adhesion and residual adhesive will not remain on the film F. - (B) The above embodiment is described using an example in which the
adhesive member 9b is rectangular in plan view. However, the present invention is not limited thereto. - For example, as shown in
Figure 9 , anadhesive member 9d that is triangular in plan view may be used. Theadhesive member 9d shown inFigure 9 is formed such that the apex of the triangle faces the terminal end F1 of the film F. In this way, since theadhesive member 9d is disposed such that the adhesion area decreases in size in the direction toward the terminal end F1 of the film F, the adhesion thereof will weaken from the downstream side to the terminal end F1. Accordingly, the terminal end F1 can be more easily pulled out from thefilm roll 9. - (C) In the above embodiment, a detailed description is not provided regarding the strength of adhesion of the micro-suction sheet used as the
adhesive member 9b on the front and reverse sides of the film F. However, the side that comes in contact with the terminal end F1 portion and the side that comes in contact with the film F may have a different level of adhesive strength. - In such a case, since one side has weaker adhesion than the other side, the terminal end F1 can be easily pulled out from the
film roll 9 by means of thepawl member 6b. - (D) The above embodiment is described using an example in which the terminal end F1 of the film F of the film roll has a linear shape. However, the present invention is not limited thereto.
- For example, in order to enable the film to be easily pulled from the film roll, a film roll as shown in
Figure 10 may be used in which the terminal end F1 of the film is formed in a shape such that both side portions of the terminal end are cut out and only the central portion thereof is left. - The film roll of the present invention does not need to be processed, and yet the terminal end of the film thereon can be easily and mechanically peeled off by a packaging machine. Because of this effect, in particular, the film roll of the present invention is widely applicable to packaging machines in which processes from loading a film roll to a setting the film roll are automated.
Claims (5)
- A film roll (9) to be loaded into a packaging machine (3) as a packaging material for packaging a product, comprising:a length of film (F) for packaging the product; anda core (9a) around which the length of film (F) is wound;
characterized in thatan adhesive member (9b, 9d) is provided between a terminal end portion (F1) of the film (F) at the outermost convolution of the film roll (9) and a portion of the film (F) on which the terminal end portion (F1) overlaps in order to temporarily hold the terminal end portion (F1) of the film (F) in place, the adhesive member is formed so as to increase in thickness toward the terminal end portion (F1) of the film (F). - The film roll (9) according to claim 1, wherein the adhesive member is a double-sided tape.
- The film roll (9) according to claim 1, wherein the adhesive member is comprised of micro-suction cups which are formed by introducing numerous fine air bubbles into a resin.
- The film roll (9) according to one of any claims 1 through 3, wherein the adhesive member (9d) is formed such that the area thereof in contact with the film (F) decreases in size toward the terminal end portion (F1) of the film.
- The film roll (9) according to any one of claims 1 through 4, wherein the adhesive member comprises a surface in contact with the terminal end portion (F1) of the film (F), and a surface in contact with a portion of the film (F) on which the terminal end portion (F1) overlaps, and either one of the surfaces of the adhesive member has weaker adhesion than the other surface.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005008560A JP4520313B2 (en) | 2005-01-17 | 2005-01-17 | Film roll |
PCT/JP2006/300337 WO2006075683A1 (en) | 2005-01-17 | 2006-01-13 | Film roll |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1840063A1 EP1840063A1 (en) | 2007-10-03 |
EP1840063A4 EP1840063A4 (en) | 2008-08-27 |
EP1840063B1 true EP1840063B1 (en) | 2009-06-17 |
Family
ID=36677706
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06702623A Expired - Fee Related EP1840063B1 (en) | 2005-01-17 | 2006-01-13 | Film roll |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1840063B1 (en) |
JP (1) | JP4520313B2 (en) |
AU (1) | AU2006205456C1 (en) |
DE (1) | DE602006007311D1 (en) |
WO (1) | WO2006075683A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010082137A (en) * | 2008-09-30 | 2010-04-15 | Daio Paper Corp | Toilet paper roll |
CN105600542B (en) * | 2015-10-22 | 2017-09-29 | 佛山达健实验设备有限公司 | The outer method and apparatus and reel for sealing volume without glue for packaging section reel |
CN107253638B (en) * | 2017-06-08 | 2019-06-04 | 南京嘉旭机械制造股份有限公司 | The mouth-sealing method and material head puncher of product volume material head after a kind of cutting |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1560555A (en) * | 1923-03-15 | 1925-11-10 | Eastman Kodak Co | Package of sensitized material |
US3960272A (en) * | 1974-06-03 | 1976-06-01 | Crown Zellerbach Corporation | Roll product with manually graspable tail end and manufacture thereof |
JPS62136459A (en) * | 1985-12-11 | 1987-06-19 | Dainippon Ink & Chem Inc | Adhesive tape for coupling sheet in roll and coupling method for sheet in roll |
JPH089441B2 (en) * | 1989-04-26 | 1996-01-31 | 日本たばこ産業株式会社 | Continuous feeder for strips |
JPH03104458U (en) * | 1990-02-14 | 1991-10-30 | ||
US5323981A (en) * | 1991-12-13 | 1994-06-28 | Sequa Corporation | Splicer tape system |
JP2558609Y2 (en) * | 1992-10-13 | 1997-12-24 | オリエンタル写真工業株式会社 | Magazine for roll material |
US5388387A (en) * | 1993-03-12 | 1995-02-14 | Kliklok Corporation | Packaging film feeding and splicing apparatus and method |
DE10122105A1 (en) * | 2001-05-07 | 2002-11-14 | Emtec Magnetics Gmbh | Wraps of strip or ribbon-shaped media with an identification label and method of manufacture |
JP2004043122A (en) * | 2002-07-12 | 2004-02-12 | Sony Corp | Rolled image receiving sheet |
JP2004142806A (en) * | 2002-10-25 | 2004-05-20 | Ishida Co Ltd | Bag-making and packaging machine and laterally sealing mechanism thereof |
DE10258667A1 (en) * | 2002-12-13 | 2004-07-08 | Tesa Ag | Adhesive tape for joining the beginning of a new paper roll to the end of an old paper roll that is running out |
JP3104458U (en) * | 2004-04-06 | 2004-09-16 | カゴメ株式会社 | Packaging material roll |
-
2005
- 2005-01-17 JP JP2005008560A patent/JP4520313B2/en not_active Expired - Fee Related
-
2006
- 2006-01-13 EP EP06702623A patent/EP1840063B1/en not_active Expired - Fee Related
- 2006-01-13 DE DE602006007311T patent/DE602006007311D1/en active Active
- 2006-01-13 WO PCT/JP2006/300337 patent/WO2006075683A1/en active Application Filing
- 2006-01-13 AU AU2006205456A patent/AU2006205456C1/en not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
AU2006205456A1 (en) | 2006-07-20 |
WO2006075683A1 (en) | 2006-07-20 |
AU2006205456C1 (en) | 2011-11-03 |
AU2006205456B2 (en) | 2011-06-02 |
EP1840063A4 (en) | 2008-08-27 |
EP1840063A1 (en) | 2007-10-03 |
JP4520313B2 (en) | 2010-08-04 |
DE602006007311D1 (en) | 2009-07-30 |
JP2006193310A (en) | 2006-07-27 |
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