JP2003327352A - Takeup method for sheet coated with sticky material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a takeup method for a sheet coated with a sticky material capable of taking up the sheet while it flows and eliminating necessity for applying any stickiness processing to a bobbin tube such as a hot melt process or application of a pressure sensitive adhesive double coated tape. <P>SOLUTION: An affixing roller 2 to invert the rotating direction of the bobbin tube C relative to a turret board T and rotate in the reverse direction to the bobbin tube when a sticky material coated sheet F fed continuously by a turret winder is transferred from a full wound roll R to a new bobbin tube C<SB>1</SB>is installed in such a way as capable of contacting with and separating from the bobbin tube, and the sheet is cut between the full wound roll transferred with rotation of the turret machine and the new bobbin tube rotating to the opposite direction to the takeup position, and the forefront of the affixing surface F<SB>1</SB>of the cut sheet is abutted and affixed to the surface of the new bobbin tube while it is held in the sheet advancing direction and pinched in the bottom between the abutted new bobbin tube and the affixing roller, and the sheet is folded back by the reversely directed rotations of the affixing roller and the new bobbin tube and then taken up on the new bobbin tube with its sticky surface facing obverse. <P>COPYRIGHT: (C)2004,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a winding method for winding a sheet having a pressure-sensitive adhesive applied on one surface thereof around a core tube with the pressure-sensitive adhesive surface facing the surface. . 2. Description of the Related Art Rolls obtained by winding a sheet coated with an adhesive on one surface with a pressure-sensitive adhesive surface on the front side and wound around a core tube or the like are widely used daily as adhesive rolls for removing dust such as carpets. Conventionally, however, the winding of this type of roll is such that the continuously fed sheet or film is rotated in the same direction as the turret board of the turret board via a touch roller with its adhesive surface as a surface side. When winding from a full roll to a new roll core tube, the new roll core tube is preliminarily subjected to an adhesive treatment such as hot melt or double-sided adhesive tape. The tip of the sheet cut by the cutting blade is wound around a new core tube using the adhesion. However, when the sheet coated with the adhesive is wound, the adhesive surface is on the outer surface side of the core tube and the back surface is subjected to a release treatment, so that the sheet is adhered to the new core tube. There is a problem that even if the treatment is performed, adhesion is poor and good adhesion cannot be achieved, and improvement thereof has been demanded. [0004] In view of the above, the present applicant has taken measures against the above-mentioned situation, and made it possible to improve the adhesion at the leading end of the cut sheet without necessitating an adhesive treatment such as hot melt or double-sided adhesive tape on the new core tube. A method for improving the workability of continuous winding of the sheet has been previously proposed. (Japanese Patent Application 2001-3
[0005] In this method, as shown in FIG. 7, a full roll R is obtained by winding a continuously fed sheet F by a predetermined length.
Sheet Upon replacing more Aramaki core tube C ₁ wound, as well as cutting the sheet between the migrated fully wound roll R and the winding position Aramaki core tube C _1, the adhesive surface F ₁ the tip of the cut sheet after attaching against laminated pressed backwards Aramaki core tube C ₁ surface that rotates to leave the flow direction, pressing the pasted sheet F
Reverse the paste is folded by the rotation of the Aramaki core tube C ₁ of rotation, a subsequent sheet Aramaki core tube C ₁ wound take how an adhesive surface F ₁ as the surface. In this method, a dancer roller 11 is provided between two guide rollers 10 and 1 so as to be swingable.
The sheet that has passed through the guide roller 10 is
And feeds the second guide roller 1 to the second guide roller 1, so that the slack of the sheet between the two guide rollers 10, 1 can be absorbed. The core tube C is successively supplied to a predetermined position of the turret board T through the supply section 12, and can be freely inserted and removed between the winding position and the transition position of the full roll R. In addition, a sheet cutting blade 4 for cutting the sheet therebetween is provided, and the full rolls R are sequentially shifted by the rotation of the turret board T and are discharged onto the receiving table 13 at a predetermined discharge position as needed. , To be sent to the next step. [0008] However, the adhesive strength of the sheet varies depending on the application, for example, for removing carpet dust, removing pet hair, and for wooden board floors, and is not necessarily uniform. . In particular, it has been found that when the pressure-sensitive adhesive sheet requiring a weak adhesive force utilizes the adhesive force of the adhesive sheet in cutting and rewinding the sheet, sufficient adhesion cannot be obtained by instantaneous contact. The present invention has been made in view of the above situation, and in order to further solve the problem, an apparatus for performing the method according to the above-mentioned proposal is particularly intended to press another sticking roller against the surface of a new winding core during sheet cutting and rewinding. It is an object of the present invention to ensure that even if the adhesive strength of the sheet is weak, the sheet can be securely wound around a new winding core, and that the sheet can be wound up which has not been achieved until now. [0010] That is, in order to achieve the above object, the present invention provides a method of winding a sheet having an adhesive applied on one surface thereof around a core tube of a turret winder with the adhesive surface facing the surface. In the take-up winding, when rewinding the continuously fed sheet from a full roll having been wound to a predetermined length to a new core tube, the rotation direction of the turret board and the rotation direction of the core tube are reversed. And a sticking roller is provided so as to be in contact with and detachable from the core tube, and is rotated in the opposite direction to the core tube, and the full roll transferred by the rotation of the turret board and the reverse of the winding position. The sheet is cut between the newly wound core tubes rotating in the direction, and the front end of the adhesive surface of the cut sheet is pressed against the surface of the newly wound core tube rotating in the above opposite direction in the flow direction of the sheet, and is adhered. Partially connect the sheet to the application roller Touch the new winding core tube at the winding position and sandwich it in the valley between the pasting roller that is in contact with it, and rotate the new winding core.
The sheet was pinched and turned by the rotation of the adhering rolls in contact with each other, and the subsequent sheet was taken into a new core tube with the adhesive surface as a surface. According to the present invention, the pressure-sensitive adhesive-coated sheet which is sent is adhered to the surface of the new core tube which rotates in the direction opposite to the direction of the sheet while rotating the turret. The surfaces come into contact and are cut by the cutting blade between the full roll and the new core tube. Then, the front end of the cut sheet is instantaneously attached to the new core tube rotating in the opposite direction using the adhesive surface together with the cutting by the adhesive force of the sheet. The adhesive surface of the sheet that is in contact with the surface of the pasting roll is slightly adhered, and is sandwiched between the valley between the new core tube and the pasting roll. At this time, since the rotation direction of the sticking roll is opposite to that of the new core tube, as soon as a part is stuck between the sticking valleys, the sheet is immediately turned back and the subsequent sheets are in the same direction as the sheet flow direction and sticky. Winded on a new core tube with the surface facing. The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG.
FIG. 2 is a schematic view showing a main part of a winding device for carrying out the present invention. FIG. 2 is a diagram showing a state when a sheet is cut in the method of the present invention, and FIG. Is shown.
FIG. 4 is a state diagram when the winding to the new core tube and the full roll are stopped, FIG. 5 is a state diagram when the sticking roll is restored, and a winding end roll is restored, and FIG. 6 is a state diagram when the turret is turned. As shown in each of these figures, the apparatus for carrying out the method of the present invention is basically the same as the conventional apparatus shown in FIG. 7, and is continuously fed from the previous step. the sheet F which agent has been applied, is its adhesive side F ₁ through the guide roller 1 in the surface wound to hung been wound core tube C on the circumference of the turret plate T configuration, Makishinkan C is Sequentially
The full roll R, which is supplied to a predetermined position of the turret board T through a supply unit (not shown), is shifted by the rotation of the turret board T, is wound at the winding position, and is fully wound, It sequentially shifts to a predetermined position, is discharged onto a receiving table at the discharge position as appropriate, and is sent to the next process. [0014] Then, similarly freely out that shown in Figure 7 between a transition position of the core tube C ₁ and the fully wound roll R of the winding position, sea and the cutting blade 4 is provided for cutting the the sheets therebetween ing. Although not shown, a dancer roller for absorbing the slack of the sheet F to be fed is provided at the front portion of the guide roller 1 as shown in FIG. According to the present invention, in the above-described winding device, the rotation directions of the core tube C and the turret board T are opposite to each other.
That is, the winding direction is counterclockwise, but the turret board T is clockwise, and both are always rotating in the opposite direction during operation, as in the previously proposed device shown in FIG. but, in the present invention, further therefore the winding effective implementation, detachably affixed roller 2 to the winding core tube is provided by the close drive mechanism 3 to Aramaki core tube C ₁ at the winding position, the with the joining roller 2 is formed so as to rotate in Aramaki core tube C ₁ and the reverse direction (sheet flow in the same direction), after the full winding, in close proximity to the migrated fully wound roll C positioned, the drive mechanism Thus, the trailing end roller 5 is provided so as to be able to contact and separate from the full roll R, so that the trailing end of the full roll R can be reliably pressed. Here, it is preferable that in advance subjected to adhesive surface F ₁ is that no Hittsuka processing sheets F come is fed to the surface of the application roller 2. Thus, in the above-described apparatus, the sheet F fed through the guide roller 1 is fully wound and moves to the next position by the rotation of the turret board, and the sheet F is rotated to the winding position. When the sheet cutting blade 4 between the Aramaki core tube C ₁ and the fully wound roll R to rotate in the direction the sheet is cut by Makishiri roller 4 the end of the sheet being wound fully wound roll R while surely wound stuck to the full wound roll R against the tip adhesive surface of the cut sheet F is in contact with Aramaki core tube C _1, as shown in FIG. 2, it is pasted. The adhesive surface of the sheet leading edge of the sheet F that has been cut in Aramaki core tube C ₁ is in contact at the same time the surface of the application roller 2 Pasted instantly adhesion sheet is stuck a little, Aramaki sheet is sandwiched as shown in Figure 3 in the valley of the core tube C ₁ and the application roller 2. Then, the cut sea and F are cut as described above.
Tip portion thereof adhesive face F ₁ of pasted Aramaki core tube C ₁ and the bonding roller 2 rotating in opposite directions, when clamped both valley and the joining roller 2 at this time the sheet sticking roller in contact with the Aramaki core is sandwiched pasted above rotates the Aramaki core tube opposite direction is taken Aramaki core tube C ₁ wound adhesive side F ₁ is folded back as a surface Go on. That is, the full roll moves and stops due to the rotation of the turret board, and the sheet is adhered to the new core tube rotating in the opposite direction while maintaining the flow direction. The sheet is sandwiched between the valley between the new core tube and the sticking roller by the reverse rotation of the sticking roller immediately after the sticking, and the sheet is folded back so that the adhesive surface is on the front side as shown in FIG. The subsequent winding is performed in the same direction as the sheet flow. Thereafter, when the sheet is wound around the new core tube using the adhesive surface applied to the sheet surface, the sticking roller 2 which has been in contact with the new core tube is wound around the new winding tube. It separates from the core tube and returns to the standby position as shown in FIG. 5, and the winding end roller 4 also separates from the full roll R and returns to the original position. Then, when the full roll is full again and the full roll moves, the sticking roller 2 and then the trailing end roller 4 sequentially move, respectively. Thereafter, by repeating this, the winding around the core tube is repeated along with the rotation of the turret board, so that the sheet coated with the adhesive is efficiently wound. As described above, according to the present invention, the adhesive surface of the sheet to be fed is pressed against the surface of the new core tube rotating in the opposite direction to the rotation of the turret board while rotating. Is disposed, and the sheet between the new core tube and the full roll is cut, and the leading end of the cut sheet is rotated in reverse with the new core tube. The sheet is sandwiched between the valleys of the sticking rollers, and the sheet is folded by the rotation of both to wind the new core tube with the adhesive surface as its surface. On the other hand, when the sheet partially contacts the new core tube rotating in the opposite direction and also touches the application roller rotating in the opposite direction and is sandwiched between the two, the cut end even when the sheet has low adhesive strength. Wraps immediately after a part is stuck by pressing The sheet can be easily wound around the core tube with the adhesive surface facing as the sheet flows with the rotation of the application roller, and even if the new core tube is constantly rotating when rewinding. There is no hindrance to the winding, and there is no need to separately apply an adhesive treatment to the new core tube, unlike the conventional adhesive coated sheet rewinding. It is possible to efficiently obtain a pressure-sensitive adhesive sheet roll that is extremely reliable and has stable quality. In particular, according to the present invention, it can be said that at the time of winding, the leading end of the sheet is wound around a new core tube rotating in the direction opposite to the sheet flowing direction. Since the sheet is folded back in the same direction as the sheet, the sheet hardly sags even if the sheet has low adhesive strength, and there is an advantage that the sheet can be efficiently wound around the new core tube as it flows.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing a main configuration of a winding device according to the present invention. FIG. 2 is an explanatory diagram of a state when cutting a sheet in the apparatus. FIG. 3 is an explanatory view showing a state immediately after winding the sheet around a new core tube after cutting the sheet of the apparatus. FIG. 4 is an explanatory diagram of a state in which a full roll is stopped and wound on a newly wound core tube. FIG. 5 is an explanatory diagram of a state in which a sticking roller and a trailing end roller are returned. FIG. 6 is an explanatory diagram of a state when the turret board is turned again. FIG. 7 is a schematic diagram showing a main part of a winding device proposed earlier by the present applicant. [Description of References] T Turret board F Sheet F ₁ Adhesive surface C of sheet C Core tube C ₁ New core tube 1 Guide roller 2 Sticking roller 4 Sheet cutting blade 5 Roller end roller

Claims (1)

Claims: 1. The sheet which is continuously fed in a winding operation of winding a sheet coated with an adhesive on one surface thereof around a core tube of a turret winding machine with the adhesive surface facing the surface. When rewinding a full roll of a fixed length into a new core tube, rotate the turret board in the opposite direction to the rotation direction of the core tube, and rotate in contact with the core tube. Provide a sticking roller so that it can be separated and rotated and rotate in the opposite direction to the core tube,
The sheet is cut between the full roll transferred by the rotation of the turret board and the new core tube rotating in the opposite direction of the winding position, and the front end of the cut adhesive surface of the cut sheet is kept in the flow direction of the sheet. While pressing and sticking to the surface of the new core tube rotating in the direction, the subsequent sheet is partially brought into contact with the attaching roller, so that the new core tube at the winding position and the attaching roller in contact with the new core tube. The adhesive-coated sheet is characterized in that the sheet is sandwiched between valleys, the sheet is sandwiched and turned by the rotation of a sticking roller facing the rotation of the new core, and the subsequent sheet is wound around a new core tube with the adhesive surface as a surface. Winding method.