KR20000029514A - Double-Coated Tape, Double-Coated Tape Manufacturing Method, and Double-Coated Tape Manufacturing Device - Google Patents

Abstract

PURPOSE: A double-sided tape can be easily remove separator by installing adhesive backing at center portion in width wise direction. CONSTITUTION: A coiled double sided tape can be mass-produced by unwinding and conveying a rolled base tape(5), which is formed by winding around a wide band-shaped separator a base tape body, composed of laminated adhesive backing, with the laminated adhesive backing inside, cutting the conveyed base tape body(6) into a plurality of bands in a converging width wise direction by means of a tape cutter(A), cutting the adhesive backing of respective cut, band-shaped tape bodies(11) into three fine straps in a width wise direction by an adhesive backing cutter(B), winding around an adhesive backing winding shaft(40) deckle edges(14a) of the cut adhesive backing to remove the same, and winding the tape bodies(11), with adhesive backings laminated only at central portions thereof in a width wise direction, onto a tape winding shaft(50) to form the same in the form of a coil.

Description

Double-Coated Tape, Double-Coated Tape Manufacturing Method, and Double-Coated Tape Manufacturing Device}

As a conventional double-sided tape, as shown in FIG. 8, the tape main body having the adhesive base material 2 as an overlapping layer on the entire surface of one side of the target separator 1 having a predetermined width so that the adhesive base material 2 side is inward. It is wound and rolled up, and is comprised in the coil form.

To use this double-sided tape, as shown in Fig. 8 arrow, the double-sided tape main body, first drawn out from the coil body and cut to a predetermined length, is moved to the adhered surface 3 as shown in Fig. 9. Stick toward. Next, another member (not shown) on the adhesive substrate 2 exposed to the adhesive surface 3 with the pincer or the fingertips peeled off the separator 1 and leaving only the adhesive substance 2 on the adhesive surface 3 To combine.

In addition, the coil-shaped double-sided tape shown in FIG. 8 is a disk composed of a roll-shaped tape body of a wide object having an adhesive layer on one side of the separator, that is, a band-shaped tape main body wound so that the adhesive base side is inward. Tape 5 is produced by cutting (slicing) or slitting at predetermined intervals, as shown by the imaginary line of FIG.

However, in the conventional double-sided tape, since the adhesive base material 2 is an overlapping layer in the entire width direction of the separator 1, it is difficult to hold the separator 1 only with fingers and tweezers from the tape body attached, and the separator 1 for exposing the adhesive base material 2 is exposed. Peeling work becomes cumbersome.

In addition, since the adhesive base material 2 is exposed to the coil side 1a of the double-sided tape and becomes sticky, handling of the double-sided tape is also inconvenient.

Furthermore, in order to automate the process of affixing the double-sided tape body drawn out from the coil-like double-sided tape to a predetermined portion, the side edge portion of the double-sided tape body 1 withdrawn is guided to the predetermined position by the guide member 8 as shown in FIG. The constitution is essential. However, when the conventional double-sided tape is used in the automatic bonding process of the tape, the adhesive base material 2 exposed to the side edge portion of the double-sided tape main body comes into contact with the guide member 8, thereby preventing the smooth transfer of the double-sided tape main body. For this reason, there also existed a problem that it was difficult to take out a double-sided tape main body and to position it correctly in the width direction appropriate position.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems in the prior art, and its first object is to provide a double-sided tape which can be peeled off easily by providing an adhesive base only at the center portion in the width direction of the separator.

In addition, a second and third object of the present invention is to provide a manufacturing method and a manufacturing apparatus of a double-sided tape is provided with an adhesive base only in the center portion in the width direction of the separator.

In the present invention, the adhesive base material is formed in an overlapping layer as much as the middle portion in the width direction of a strip-shaped object or a separator having a predetermined width called a release paper and a release film. The present invention relates to a double-sided tape having a structure in which no adhesive base material is provided at the left and right edges of the separator and a manufacturing method and a manufacturing apparatus of the double-sided tape.

1 is a perspective view of a double-sided tape as an embodiment of the present invention

Figure 2 (a) is a cross-sectional view of the double-sided tape attached to the adhered surface

Fig. 2 (b) is a cross sectional view of the double-sided tape affixed to the adhered surface of the member corner portion;

3 is an overall configuration diagram of an apparatus for manufacturing double-sided tape as an embodiment of the present invention.

Figure 4 is an enlarged cross-sectional view of the tape, adhesive substrate cutting machine that is the main part of the apparatus

5 is an enlarged cross-sectional view of a tape body wound around a tape winding shaft.

6 is a perspective view of the double-sided tape produced by the above device

7 is a diagram showing another embodiment of the tape winding shaft drive mechanism.

8 is a perspective view of a conventional double-sided tape

9 is a cross-sectional view of a conventional tape body attached to an adhered surface.

10 is a perspective view illustrating a conventional manufacturing method

Fig. 11 is a schematic diagram of a tape guide mechanism used in the tape autoadhesive step;

In order to achieve the first object, in the double-sided tape according to claim 1, a double-sided tape main body having a pressure-sensitive adhesive base on one side of the target separator having a predetermined width is wound so that the side of the adhesive base is inward. In the double-coated tape formed in the form of a coil, the upper and lower adhesive portions of the separator are left to install the above adhesive base material.

In the state where the double-sided tape main body is attached to the surface to be adhered, fingers and tweezers are formed between the left and right side edge portions of the separator on which the adhesive base layer is not formed and the thickness of the adhesive base layer is formed between the surfaces to be adhered. It is easy to hold the side edges on the right and left of the separator, and the separator can be simply peeled off with respect to the adhesive base layer adhered to the adhered surface.

In addition, since the adhesive material is not exposed to the side edges of the double-sided tape body, the side of the double-sided tape on the coil is not sticky and the handling and storage of the double-sided tape is easy.

In addition, since the adhesive material is not exposed to the side edge portion of the double-sided tape body, even when the side edge portion of the double-sided tape body drawn out from the coil-sided double-sided tape is guided by the guide member, smooth withdrawal and conveyance of the double-sided tape is possible.

In order to achieve the second object, in the method for producing a double-sided tape according to claim 2, a disc tape body having an adhesive layer as an overlap layer on one side of a wide range of target separators is wound so that the adhesive base side is inward. Loosen and transport the disc tape composed of the roll shape, and the conveyed disc tape main body is cut with a tape cutter according to the conveying direction, and at the same time, the width direction center part of the adhesive base material layer of each cut tape main body is cut. The adhesive tape cutting machine was cut to the width of the adhesive tape, and the thin tapered side edges of the adhesive tape layer were wound with the adhesive tape winding shaft to remove the tape. It is wound up by a winding shaft to be configured as a coil.

The disk tape body (separator and adhesive base material layer) is cut into a plurality of objects on a continuous tape body conveying path until the tape on the roll is released and conveyed to the disk tape body, and then the tape body is wound on a coil winding shaft. By providing a step, a step of cutting the central portion in the width direction of the adhesive base material layer of each of the cut target tape bodies to a predetermined width, and a step of winding and removing the cut thin side edge portion of the adhesive base material layer. A plurality of coil-shaped double-sided tapes having an adhesive layer as an overlapping layer can be produced only in the center portion in the width direction of the separator.

In claim 3, in the method for producing a double-sided tape according to claim 2, the tape cutter and the adhesive base material cutter are integrated to cut the disc tape body (separator and adhesive base material layer) by a tape cutter, and It is comprised so that cutting of the adhesive base material layer by a base material cutting machine may be performed simultaneously.

Production of the double-sided tape by integrating the process of cutting the disc tape main body (separator and adhesive base material layer) into a plurality of objects, and the process of cutting the width direction center part of the adhesive base material layer of each cut object tape main body to predetermined width | variety. The number of processes constituting the method is reduced.

In order to achieve the third object, in the apparatus for producing a double-sided tape according to claim 4, the double-sided tape main body having an adhesive layer as an overlapping layer on one side of a separator of a wide range so that the adhesive base side is inward. A disc tape shaft which is wound and mounted to support a disc tape composed of a roll shape and releases the disc tape on a roll,

A tape cutter which cuts the disc tape main body (separator and adhesive base material layer) conveyed from the disc tape shaft into a plurality of strips along the conveying direction, and an adhesive base layer of each target tape body cut by the tape cutter. A tape-and-adhesive substrate cutter incorporating a pressure-sensitive adhesive material cutter for cutting a widthwise central portion into a predetermined width;

An adhesive base winding shaft for winding a thin string side edge portion of the adhesive base material layer cut by the adhesive base material cutter;

The side edge portion of the pressure-sensitive adhesive base layer by the pressure-sensitive adhesive base winding shaft is removed, so that the tape winding shaft is wound around the tape main body in which the pressure-sensitive adhesive substrate is an overlapping layer only in the central portion in the width direction.

Due to the extremely compact device structure including a disc tape shaft, a tape and adhesive base material cutter, and an adhesive base winding axis and a tape winding axis, a large number of coil-sided double-sided tapes having an adhesive layer as an overlapping layer in the widthwise center portion of the separator can be produced.

In claim 5, in the apparatus for producing double-sided tape according to claim 4, a guide roller for controlling the conveying direction of the tape main body is provided in the tape main body conveying path between the disc tape shaft and the tape winding shaft. will be.

By varying the conveying direction of the tape main body by the guide roller, the degree of freedom in the arrangement of the disc tape shaft, the tape / adhesive cutting machine, the adhesive base winding shaft, and the tape winding shaft is increased.

According to claim 6, in the apparatus for producing double-sided tape according to claim 4, the tape-adhesive substrate cutting machine,

A plurality of tape cutting rotations arranged in parallel at a predetermined interval in the axial direction, and a rotation tape for cutting any adhesive base material arranged in parallel inside the adjacent tape cutting rotations are integrated on the same axis, and the transfer disc tape Cutting rollers arranged in a direction crossing the main body,

The outer circumferential surface is arranged in parallel with the cutter roller so as to be in contact with the tape cutting rotation, so that it is composed of a base roller which rotates in opposite directions with the cutter roller at the same time.

When the disc tape body is cut by rotation, the back side (the side on which the adhesive base layer is not formed) is supported in the form of pressure contact with the outer circumferential surface of the base roll, and the cutting position of the disc tape body is It does not change in the width direction of the tape body (it does not scatter).

Separator rotation speed for cooperating with the base roll to make tape cutting machine and rotational pressure for cutting material for gluing machine for gluing machine with the base roll are integrated on the same axis as the cutter roller. have.

In the tape-and-stick substrate cutter, the disc tape main body is cut to the target, and only the central portion in the width direction of the adhesive base layer of each target tape main body is cut to a predetermined width.

In claim 7, according to claim 6, in the apparatus for producing a double-sided tape according to claim 6, discs which are press-contacted to a base roller driven by a motor at both ends of the cutter roller are integrated on the same axis. It is configured to rotate the cutter roller and the base roller at the same time.

Since the cutter roller is synchronously rotated in the opposite direction to the base roller by a disk pressed against the base roller driven by the motor, a motor for driving the cutter roller does not need to be separately installed.

In claim 8, in the apparatus for manufacturing a double-sided tape according to any one of claims 6 and 7, the gap between the rotational speed for cutting the pressure-sensitive adhesive material and the outer circumferential surface of the base roll is determined by the separator. It is set to the thickness.

The rotation speed for cutting the adhesive base material cuts only the adhesive base layer which is a redundant layer on the separator without damaging the separator.

In claim 9, in the apparatus for manufacturing a double-sided tape according to any one of claims 6 and 7, the gap between the rotational speed for cutting the pressure-sensitive adhesive material and the outer peripheral surface of the base roll is separated from the separator. It is set to be slightly smaller than the thickness.

The rotation speed for adhesive base material cutting penetrates into the separator surface layer part of the lower surface of the adhesive base material layer of the cut tape main body, and the adhesive base material layer is reliably cut | disconnected.

Embodiment of this invention is described based on an Example.

1 to 6 show an embodiment of the present invention, Figure 1 is a perspective view of a double-sided tape of one embodiment of the present invention, Figure 2 (a), (b) is a cross-sectional view of the double-sided tape attached to the adhered surface, Fig. 3 is an overall configuration diagram of a double-sided tape manufacturing apparatus, FIG. 4 is an enlarged cross-sectional view of a separator-adhesive substrate cutting machine, which is a main part of the device, FIG. 5 is an enlarged cross-sectional view of a tape body wound around a tape winding shaft, and FIG. (A) is a perspective view of the state wound around the tape winding shaft, (b) is a perspective view of the double-sided tape continuous body from which the strip coil was removed.

Reference numeral 10 in FIG. 1 denotes a tape main body 11 having an adhesive layer 14b as an overlapping layer on one side of the target separator 12 having a predetermined width (for example, 3 mm width) so that the adhesive base material 14 (14b) side is inward. It is a double-sided tape wound on a branch pipe 52 of the same width as 12 and integrated in a coil shape. The adhesive base material 14 (14b) is provided leaving the side part 12a of the width direction both sides of the separator 12. That is, the adhesive base material 14 (14b) which has a predetermined width (for example, 1.2 mm width) only in the center of the width direction of the separator 12 becomes an overlapping layer, and according to the left and right side edge portions 12a of the separator 12, the predetermined width (for example, The adhesive base material 14 (14b) is not provided in the area | region of 0.9 mm width).

Therefore, when the tape main body 11 is stuck to the to-be-adhered surface 3, as shown to FIG.2 (a), (b), the side edge part 12a of a separator will become a shape which lifts from the to-be-adhered surface 3 by the thickness of the adhesive base material 14b. For this reason, the side edge part 12a of the separator 12 can be easily picked up by a finger, and the separator 12 can be peeled off and the adhesive base material 14b can be easily exposed. In particular, when the adhesive base material 14b is formed in the to-be-adhered surface 3 of a member corner part as shown in FIG.2 (b), it is more effective.

In addition, the structure of the double-sided tape 10 is, for example, a separator 12 composed of a release paper or a release film coated with polyethylene coating or a silicone coating, and a pressure-sensitive adhesive base 14 integrated by forming an adhesive on both sides of a nonwoven fabric or a plastic film as an overlapping layer. Although it is one thing, the adhesive 12 which consists of silicone rubber in the separator 12 comprised from the polyester film was mentioned as an overlap layer.

FIG. 3 shows a disk tape 5 (see FIG. 10) formed in a roll shape by winding a wide object tape body having an adhesive layer 14 as an overlapping layer on one side of the separator 12, and then processing the double-sided tape 10 as shown in FIG. The whole structure of the manufacturing apparatus of a double-sided tape is shown, and the code | symbol H is a housing of this apparatus.

In the apparatus housing H, a disk-shaped tape 5, which is supported by a roll, is unloaded, and a disk tape shaft 20 for discharging the roller-shaped disk tape 5 to be sent to the disk tape body 6 and a disk tape body 6 conveyed from the disk tape shaft 20 are conveyed. A tape-and-adhesive substrate cutter 30 for cutting an object having a predetermined width, i.e., an adhesive base layer 14 of each object tape body 11 cut at the same time as a strip, into three thin strings in the width direction; The adhesive base winding shaft 40 which winds the thin side and right side edge ear portions 14a in the width direction left and right of the adhesive base material layer 14 and the side edge ear portions 14a on the left and right sides are removed by the adhesive base winding shaft 40, and only the width direction center part is adhere | attached. The tape winding shaft 50 which winds the tape main body 11 (refer FIG. 5) to which the base material layer 14 (14b) remains is arrange | positioned in parallel with each other.

The disc tape shaft 20 is made to be rotatable by the number of bearing shafts, and the disc tape 5 attached to the disc tape shaft 20 is conveyed by the driving rollers 28 and 38 to the disc tape body. Each target tape body 11 cut into 30 is wound around the tape winding shaft 50 and pulled out, thereby naturally unwinding. Then, the released disc tape main body 6 is guided to the guide rollers 24, 25 and 26 and conveyed to the tape-and-adhesive cutting machine 30. Reference numeral 27 denotes a tension roller, which is used to keep the disc tape body 6, which is sent to the cutter 30, in a constant tension state without loosening. Reference numeral M ₁ denotes a motor for rotating the driving rollers 28 and 38. The rotational force of the motor M ₁ is transmitted to the drive rollers 28 and 38 by the belt 29, and the disc tape main body 6 is conveyed at a constant speed V ₁ by the rotation of the drive rollers 28 and 38.

The tape-adhesive cutting machine 30 is arranged in parallel with the cutter roll 31, which is a free roll, and is arranged in the direction of cutting the carrier disc tape body 6 sideways as shown in FIG. It consists of a metal base roller 38, which is the installed driving roller. The cutter roller 31 is coaxially formed with a plurality of tape cutting turns 32 arranged in parallel in the axial direction and a pair of tape cutting turns 34 placed in parallel with a tape cutting turn 32 adjacent to each other. In an integrated structure, the outer circumferential surface of the base roller 38 is arranged so as to be in contact with the tape cutting rotation 32 of the cutter roller 31.

In addition, at the left and right ends of the cutter roller 31, a disk 35 having an outer diameter is integrated on the same axis as the tape cutting rotational speed 32, and the cutter roller according to the rotation of the base roller 38 is maintained by press-holding the disk roller 38 to the base roller 38. 31 can be rotated in synchronization with the base roller 38 in the opposite direction.

In addition, the disc tape main body 6 is formed with the adhesive base layer 14 side facing upward, and the plurality of objects (the tape cutting rotations 32 and 32 interval distance are equivalent in the width direction (Fig. 4 left and right directions) through both the rollers 31 and 38). The adhesive base material layer 14 of the tape main body 11 of each object cut | disconnected at the same time and cut | disconnected in the shape of the strip | belt with the width | variety to which it cut | disconnects is cut into three thin strings in the width direction (between rotation degree 32, 34 in the side edge part of the target tape main body 11). Cut at a distance apart by a distance of.

That is, the tape cutting rotation 32 and the base roller 38 of the cutter roller 31 constitute a tape cutter A for cutting the disc tape main body 6 (separator 12 and the adhesive base material layer 14) into a plurality of objects with a predetermined width.

In addition, the rotational speed 34 and the base roller 38 for cutting the adhesive roller 31 of the cutter roller 31 are set at the thickness of the separator 12 between the rotational speed 34 and the outer circumferential surface of the base roller 38 to be adhered to each tape body 11 cut. The adhesive base material cutter B which cut | disconnects only the base material layer 14 to three thin strings in the width direction is comprised. The tape and adhesive base material cutter 30 has a structure in which the tape cutter A and the adhesive base material cutter B are integrated so that the cutting of the disc tape body 6 by the tape cutter A and the adhesive base material layer 14 by the adhesive base material cutter B can be simultaneously performed. It is.

In addition, the disc tape main body 6 between the cutter roller 31 and the base roller 38 is cut by the rotational speeds 32 and 34 in a state where the side where the adhesive base material layer 14 is not formed is pressed against the outer circumferential surface of the base roller 38. There is no fear of scattering in the direction. Therefore, in the present embodiment, the interval between the adhesive rotations 34 and 34 for cutting the adhesive base material is close to 0.5 mm, so that the width of the adhesive base layer 14b of the double-sided tape of FIG.

The gap between the rotational speed 34 for cutting the adhesive material and the outer circumferential surface of the base roller 38 is set to be exactly a few microns smaller than the thickness of the separator main body 12, so that the knife tip of the rotational speed 34 has the separator main body 12 at the lower surface of the adhesive base material layer 14 It is comprised so that it may intrude to the surface layer part of this, and it makes it possible for the adhesive base material cutter B to cut | disconnect the adhesive base material layer 14 reliably.

Then, the thin side edge portion 14a of the thin string of the adhesive base material layer 14 cut by the adhesive base material cutter B is wound on the adhesive base winding shaft 41 disposed in parallel with the cutter roller 31 above the cutter roller 31, thereby remaining in the center in the width direction. It is reliably peeled off and removed to the adhesive base material layer 14b.

In FIG. 3, the code | symbol M <_2> is a motor for rotatingly driving the adhesive base winding shaft 40. As shown in FIG. The winding shaft 40 is rotated at a predetermined rotational speed by a drive force transmission mechanism composed of a motor side chain wheel 42, a chain 43, and a winding shaft side chain wheel 44. Reference numeral 46 denotes a guide roll for leading the side edge portion 14a of the adhesive base material layer 14 cut by the adhesive base material cutter B (rotational speed 34, base roll 38) to the winding shaft 40.

In addition, reference numeral 48 is a guide roll 46 and the take-up shaft 40 speed detection roll is installed during the conveying path of the side edge of the ear portion 14a of the liver, on the basis of the take-up speed of the speed detection roll 48 is detected side edge of the ear portion 14a to the motor of M ₂ The rotation speed v ₂ is feedback-controlled so that the winding speed V ₂ of the side edge ear part 14a by the winding shaft 40 becomes constant.

I.e. the motor M ₂ rotational speed v ₂ is when schedule the coil diameter of the binary-side edge of the ear portion 14a wound on the take-up shaft 40 gradually enlarged in accordance with progress winding of the take-up shaft 40 side edge of the ear portion 14a by the side edge of the ear portion 14a of The winding speed V ₂ of the cutter is larger than the conveying speed of the tape main body 11 by the cutter 30 (cutting roller 31, base roller 38), and the wound side edge part 14a is cut off by overtension, and the side edge ear part 14a is continuously You will not be able to wind up.

Thus, in this embodiment, the speed V ₂ of winding the side edge 14a is detected as the speed detection roll 48, and the rotational speed v ₂ of the motor M ₂ is such that the winding speed V ₂ is always a constant speed (V ₂ = V ₁ ). It is possible to wind the continuous side edge ear part 14a by controlling.

The tape winding shaft 50 is disposed below the base roller 38 in front of the disc tape 20 (right of FIG. 3), and rotates at a predetermined speed by the motor M ₃ . The winding shaft 50 removes the edge 7a of the side edge of the adhesive material through the edge 7 of the disc tape 6 cut at the rotational speed 32 for tape cutting at the axially shortest position of the cutter roller 31, and the tape / adhesive cutting machine 30. Each of the plurality of target tape bodies (tape main body having the adhesive base layer 14b as an overlapping layer) 11 is wound as much as the plurality of target tape bodies. Reference numeral 52 is a guide roller.

The rotational force of the motor M ₃ which rotates the tape winding shaft 50 is transmitted to the tape winding shaft 50 by the belt 57. Numeral 58 denotes a speed detecting roll which is installed in the tape main conveying path between the tape and adhesive cutting machine 30 and the tape winding shaft 50 to detect the winding speed of the tape main body 11 wound on the tape winding shaft 50. the rotation speed of the motor M ₃ based on the detection winding speed of the tape main body 11 that v ₂ is controlled feed pack. In other words, if the winding of the tape main body 11 by the tape winding shaft 50 proceeds, the winding speed of the tape main body 11 by the tape winding shaft 50 is unfavorable compared with the ejection speed of the tape main body 11 in the cutter 30. Therefore, it is possible that the winding speed of the tape main body 11 is always ₃ V winds a constant (V ₃ = V ₁₎ to a continuous tape main body 11 by controlling the rotational speed v of the motor ₃ so that the M _3.

On the outer circumference of the tape winding shaft 50, the branch pipe 54 (refer to FIGS. 1 and 6) having a width corresponding to the width of the double-sided tape 10 (target tape body 11) is cut and two more than the number corresponding to the number of the target tape bodies 11 conveyed. The branch pipe series 53 is angularly integrated with the tape winding shaft 50 by pinching rings (not shown) arranged at both ends of the tape winding shaft 50 at the same time. For this reason, as shown in Fig. 6 (a), the tape winding shaft 50 has a double-sided tape 10 on a coil wound around the main pipe 54, and a fragment coil 7A wound on the base pipe 54 on the base 7 of the disc tape. A continuous rolled double-sided tape assembly 10A is formed in a matched form. Here, a large number of double-sided tapes 10 are obtained by loosening the narrow ring and taking out the roll-shaped tape assembly 10A from the tape winding shaft 50 to remove the chip coils 7A at both ends.

In this manner, according to the present embodiment method, the disc tape body 6 and the adhesive base layer 14 which have been conveyed by the tape-adhesive cutting machine 30 are unwound and conveyed by the roller tape 5 having a predetermined length attached to the disc tape shaft 20. Each tape main body 11 was cut in the longitudinal direction (conveying direction), and the unnecessary adhesive base layer (side edge portion 14a) was wound around the adhesive base winding shaft 40 to be removed. By winding on the axis 50, one roll-shaped disc tape 5 can be processed into a plurality of roll-shaped double-sided tape 10 in a short time.

Fig. 7 shows another embodiment of the drive mechanism for driving the tape winding shaft, wherein the motor M ₂ for driving the driving rollers 28, 38 is to drive the tape winding shaft 50 degrees.

In other words, the rotation of the motor M ₂ is transmitted to the tape winding shaft 50 through the belt 29a, the powder clutch 62 and the gear mechanism 64. The powder clutch 62 is controlled such that the winding speed V ₃ of the tape main body 11 is always constant (V ₃ = V ₁ ).

Further, a contact protrusion is provided on the outer circumferential surface of the tape winding shaft 50 in contact with the inner circumferential surface of the cylindrical paper tube linear body 53, and the paper tube linear body 53 has a structure of a conventionally known sliding clutch (not shown). .

In other words, the branch winding body 53 is fixedly fixed to the tape winding shaft 50 by the narrow ring ring, and the branch pipe series 53 can be rotated together with the tape winding shaft 50. However, if the load (tension force acting on the tape body 11) acting on the tape winding shaft 50 exceeds the allowable value of the sliding clutch (friction resistance force acting between the contact protrusion and the inner circumferential surface of the branching body 53), the contact along the inner circumferential surface of the branching body 53 The projections slide in the circumferential direction, i.e., the tape winding shaft 50 with respect to the branch pipe body 53 slips and rotates, and the tape winding shaft 50 makes a gap between the cutter 30 and the tape winding shaft 50 without winding the tape body 11 more than necessary. Tape body 11 always maintains constant tension

As described in the above description, according to the double-sided tape of claim 1, the separator for the adhesive base material can be easily peeled off, thereby making it easy to use the double-sided tape.

In addition, since the side of the coil-sided double-sided tape is not sticky, it is easy to handle or store the double-sided tape.

In addition, since the adhesive material is not exposed to the side edge of the tape body, even if the side edge of the tape body drawn out from the coil-sided double-sided tape is guided by the guide member, the tape body can be smoothly drawn out and its position is accurate in the width direction. Determination becomes possible, thereby making it possible to achieve auto-adhesion of the double-sided tape.

According to the method of manufacturing the double-sided tape according to claim 2, the disc tape is cut along the conveying direction in which the disc tape body is released, and only a part of the adhesive base layer is cut off, and then the tape body is wound. In the process, it is possible to manufacture a plurality of coil-sided double-sided tapes in which a pressure-sensitive adhesive base is an overlapping layer only in the center portion in the width direction of the separator.

According to claim 3, the disc tape body is cut by the tape cutter and the pressure-sensitive adhesive base layer is cut at the same time, so that the manufacturing method of the double-sided tape is simplified and the time required for manufacturing is also shortened.

According to the manufacturing apparatus of the double-sided tape according to claim 4, since the disk tape shaft, the tape-adhesive substrate cutting machine, the adhesive base winding shaft, and the tape winding shaft are provided in a very simple structure, the adhesive base material overlaps only the center portion in the width direction of the separator. It is also possible to produce inexpensive double-sided tape on the market because it can produce double-sided tape in layers.

According to claim 5, a disk tape shaft, a tape / adhesive cutting machine, and an adhesive material are formed by appropriately providing a guide for controlling the conveying direction of the tape body in the conveyance path of the tape body between the disk tape shaft and the tape winding shaft. In the apparatus of the winding shaft and the tape winding shaft, the degree of freedom of arrangement is increased and the apparatus can be made compact.

According to claim 6, the separator and the pressure sensitive adhesive base layer can be cut precisely in the width direction, so that a double-sided tape having a very narrow pressure sensitive adhesive base layer of 0.5 mm can be produced. In addition, the tape-and-adhesive cutting machine is compact, so that the whole apparatus is compact.

According to claim 7, since there is no need to separately install a drive source (motor) for driving the tape adhesive base material cutter, the device structure is simplified and compact.

According to claim 8, since the rotation rate for cutting the adhesive base material does not cause the separator to be damaged when the adhesive base material layer is cut, the defective product having a cut in the separator does not occur.

According to claim 9, since the knife edge of the adhesive base material cutting rotation degree contacts the surface layer part of the separator of the lower surface of an adhesive base material layer, the coil-shaped double-sided tape in which the side edge part of the adhesive base material layer was reliably removed is obtained. In addition, since the amount of penetration of the cutting edge of the pressure-sensitive adhesive material cutting into the separator surface layer portion is very small, there is no fear that the function as the separator will be disturbed.

Claims (9)

In a double-sided tape in which a double-sided tape main body having an adhesive layer as an overlap layer on one side of a target separator having a predetermined width is wound so that the side of the adhesive base material is inward, the double-sided tape formed in a coil shape, wherein the pressure-sensitive adhesive material is on both sides of the left and right sides of the separator. Double-sided tape, characterized in that it is installed leaving the edge side A disc tape body having an adhesive layer as an overlap layer on one side of a separator of a wide range of objects is unloaded and conveyed a disc tape composed of a roll shape wound so that the adhesive base side is inward, and the conveyed disc tape body is conveyed in the conveying direction. The tape-shaped cutter was cut into a plurality of strips along the tape, and the central portion in the width direction of the adhesive base material layer of each target tape body was cut with a pressure-sensitive adhesive base cutter at a predetermined width. A method of manufacturing a double-sided tape, wherein the edge portion of the edge is wound with an adhesive base winding shaft to be removed, and the tape main body of which the adhesive base material is an overlapping layer is wound around the tape winding shaft only in the central portion in the width direction to form a coil. 3. The double-sided structure according to claim 2, wherein the tape cutting machine and the adhesive base cutting machine are integrated, and both the cutting of the disc tape body by the tape cutting machine and the cutting of the adhesive base layer by the adhesive base material cutter are performed simultaneously. Tape manufacturing method The disc tape body with the adhesive layer on one side of a wide range of target separators is wound so that the adhesive material is inward, and the disc tape composed of a roll shape is supported, and the disc tape shaft for unwinding and sending the disc tape , A tape cutter for cutting the disc tape body conveyed from the disc tape shaft into a plurality of objects along a conveying direction, and a central portion in the width direction of the adhesive base material layer of each object tape body cut by the tape cutter with a predetermined width; Tape and adhesive base material cutter which the adhesive base material cutter which cuts is integrated, An adhesive base winding shaft for winding a thin string side edge portion of the adhesive base layer cut by the adhesive base material cutter; Apparatus for producing a double-sided tape comprising a tape winding shaft for winding the tape main body of the adhesive base material in the overlapping layer only in the widthwise center portion by removing the side edge portion of the pressure-sensitive adhesive material layer according to the pressure-sensitive adhesive material winding shaft 5. The apparatus for manufacturing double-sided tape according to claim 4, wherein a guide roller for controlling the conveying direction of the tape body is provided in the tape body conveying path between the disc tape shaft and the tape winding shaft. The tape-adhesive substrate cutting machine according to claim 4, wherein the tape-adhesive substrate cutting machine includes a plurality of tape cutting rotations arranged in parallel with predetermined intervals in the axial direction, and integral adhesive material cutting arranged in parallel with the adjacent tape cutting rotations. Cutting rollers are integrated in the same axis and arranged in the direction of cutting the carrier disk tape sideways, The outer peripheral surface is arranged in parallel with the cutter roller so as to contact the rotational speed for cutting the tape, and the manufacturing apparatus of the double-sided tape, characterized in that the base roller is installed in the opposite direction to rotate with the cutter roller at the same time 7. The apparatus for manufacturing double-sided tape according to claim 6, wherein both ends of the cutter roller are integrally coaxial with a disk contacting the base roller driven by the motor so that the cutter roller and the base roller rotate simultaneously. 8. The apparatus for manufacturing a double-sided tape according to claim 6 or 7, wherein a gap between the rotation for the pressure-sensitive adhesive material cutter and the outer circumferential surface of the base roll is set by the thickness of the separator. 8. The apparatus for manufacturing a double-sided tape according to claim 6 or 7, wherein a gap between the rotational speed of the pressure sensitive adhesive material cutter and the outer circumferential surface of the base roll is set slightly smaller than the thickness of the separator.