KR20020075863A - Tape roll and its wind-up core and method for producing tape roll - Google Patents

Abstract

The tape roll comprises an annular winding core and an annular tape roll, wherein the annular winding core has a winding core sheet, the winding core sheet includes a first edge and a second edge, and the winding core sheet comprises an annular winding core. When forming the first and second edges are opposed to each other and not fixed to each other, the annular tape roll comprises an inner circumferential tape surface and the winding core is in intimate contact with the inner circumferential tape surface.

Description

Tape roll, manufacturing method of tape roll and winding core for tape roll {TAPE ROLL AND ITS WIND-UP CORE AND METHOD FOR PRODUCING TAPE ROLL}

Tape rolls generally include tape that is wound on a winding core and can be reused as needed. In this case, a rigid or strong annular plastic or paper product is commonly used as the winding core.

Strong annular plastic products as described above are obtained by cutting the plastic injected annular tube into round slices or by plastic injection molding. To form a strong annular paper product, the paper sheet is formed into a paper roll for making a strong paper tube by curing the paper layer by a pressure-sensitive adhesive between the paper layers, the paper sheet being round Cut into slices.

To produce a tape roll according to the invention, a plastic or paper core tube is fitted to the mandrel to securely connect the mandrel to the core tube, and then the core tape is wound up by rotating the mandrel or paper core tube. Rewind to the top. The raw tape and the winding core are then cut into round slices as needed and the mandrel is further removed.

In a conventional tape roll with a strong wound core sheet, tape-thickness shrinkage due to roll tightening or residual stress is prevented so that the tape roll side is tapered at the end. If the winding core with the tape used is placed, the winding core is unlikely to collapse into pieces, which is a drawback to preventing an increase in the amount of waste. In such a case, an attempt to turn the winding core into pieces by cutting requires a tool to cut the winding core, thus increasing the regeneration cost.

Summary of the Invention

It is an object of the present invention to provide a tape roll which can be kept in a stable rotational state by causing the winding core to follow the shrinkage of the tape in the width direction, and when the tape roll is used up completely, the remaining portion is easily disposed or recycled. .

The tape roll according to the invention is characterized in that the winding core sheet is constrained to the inner circumferential tape surface of the annular tape roll and in this state both edges of the winding core sheet remain unbonded with each other. Here, the "uncoupled" edge means that when the winding core sheet forms an annular winding core, the edges of the winding core sheet are opposite each other and are not fixed to each other. When the tape is a pressure sensitive adhesive tape, the winding core sheet and the inner peripheral tape surface forming the contact interface are joined to each other by using the pressure sensitive adhesive of the pressure sensitive adhesive tape itself.

Another tape roll according to the invention is characterized in that the wound core sheet is joined to the inner peripheral tape face of the annular tape roll and in such a state both edges of the wound core sheet remain unbonded with each other. When the tape is a pressure sensitive adhesive tape, the winding core sheet and the inner peripheral tape surface forming the contact interface are connected to each other by using the pressure sensitive adhesive of the pressure sensitive adhesive tape itself.

The tape roll manufacturing method according to the present invention comprises winding one wound core sheet layer onto a mandrel by butt-winding or gap-winding, while rotating the mandrel. Returning the raw tape onto the wound core sheet, and then taking the raw tape out of the mandrel or cutting the raw tape into round slices and then taking the piece of raw tape out of the mandrel, After winding the binder pressure sensitive adhesive film on the wound core sheet, the raw material tape on the binder pressure sensitive adhesive film may be rewound on the binder pressure sensitive adhesive film. Here, the term "butt-wound" means that the unbonded edges of the wound core sheet are in contact with each other, and the term "gap-wound" means that the unbonded edges have a gap and face each other.

The present invention relates to a tape roll, a winding core thereof, and a method for producing a tape roll.

1 is a diagram showing an embodiment of an apparatus for producing a tape roll according to the present invention;

2 is a diagram showing an apparatus for enlarging and retracting the diameter of a mandrel in the apparatus of FIG. 1;

3a to 3c are diagrams showing another embodiment of the annular wound core sheet used in accordance with the present invention;

4 is a diagram showing an example of an annular body with a photosensitive adhesive film used according to the present invention;

5A and 5B are diagrams for explaining the effects of tape rolls according to the present invention, respectively.

Embodiments of the present invention are described in detail with reference to the drawings.

1 shows an embodiment of an apparatus for producing a tape roll according to the invention.

As shown in FIG. 1, one end of the expandable-shrinkable rotating mandrel 1 is cantilevered by a bearing 10.

In order to make the diameter of the mandrel 1 enlargeable and retractable, the pair of opposed segments 11, 13 of the divided segments 11-14 are each enlarged-contractable by hydraulic lugs 21, 23. Supported, the remaining pair of opposed segments 12, 14 are supported by expandable-retractable hydraulic lugs 22, 24, respectively. In other words, after the pair of hydraulic lugs 21 and 23 are enlarged or retracted, the remaining pair of hydraulic lugs 22 and 24 are enlarged or retracted.

Hydraulic inlets 3a (3b) are provided on hydraulic lugs 21, 23 (22, 24). A movable bearing 101 movable back and forth is provided at the remaining end of the mandrel 1.

Moreover, the motor 41, the reduction gear 42, and the transmission belt 43 are provided.

The cutting tool 5 is fixed to a trestle so that the cutting tool 5 can move in both X and Y directions.

In order to produce a tape roll according to the invention, the diameter of the mandrel 1 is first enlarged and the sacrificial tape is wound on the mandrel 1 being rotated. In addition, only one layer of the winding core sheet is wound on the sacrificial tape in a spiral in a butt-wrap or gap-wound state.

Instead of spiral butt-wrap or gap-wound (as shown in FIG. 3A), only one layer of the wound core sheet A is shown in FIG. 3B butt-wound (for example, Japanese rolled sushi ( Similar to Japanese rolled sushi] or a wave shape in which another layer of the winding core sheet is added thereto (ie, the opposite edge of the core sheet is wound core) as shown in FIG. 3C. Can be wound on it by butt-winding by butt-winding extending obliquely about the axis of the < RTI ID = 0.0 >

After one layer of the winding core sheet is wound on the sacrificial tape by butt-winding, the raw material pressure-sensitive adhesive tape (base before cutting to a predetermined tape width) is gradually wound up by rotating the mandrel.

When the raw material tape reaches the predetermined roll amount, the cutting tool 5 is moved in the Y direction and the X direction at the predetermined position, and at the same time, the mandrel 1 carries out the raw material tape roll and the butt-wrapped winding core sheet. Rotate to cut to the desired tape width.

In the present case, when the edge of the cutting tool reaches the sacrificial tape layer, the edge of the cutting tool is controlled so that it does not contact the rotating mandrel so that the cutting extends to the butt-wrapped winding core sheet.

The cutting tool 5 is then repeatedly moved in the X direction corresponding to the width of the tape roll cut into round pieces. In addition, the sacrificial tape can be removed from the inner surface of each piece of tape roll to obtain a tape roll according to the present invention.

Non-tacky raw tapes without any coating of pressure sensitive adhesives can be used in accordance with the aforementioned embodiments of the present invention. In this case, one winding starting end of the raw material tape is fixed to the butt-wrapped winding core sheet by two layers of pressure-sensitive adhesive tape, and then the non-sticky raw material tape is wound up by rotating the mandrel as well. . When the raw material tape reaches the predetermined roll amount, the cutting tool is moved in the Y direction and the X direction at the predetermined position, and at the same time the mandrel is rotated to feed the raw material tape roll and the butt-wound core sheet to the predetermined tape. Cut to width. This cutting operation is repeated to obtain a tape roll according to the present invention.

After one layer of the winding core sheet is wound on the sacrificial tape by butt-winding or gap-winding according to the above-described embodiment of the present invention, a thin pressure-sensitive adhesive film is pressed against its surface to form an adhesive raw material tape or Rewind the sticky raw tape onto the rotating mandrel. When the desired amount of raw tape roll is achieved, the cutting tool is moved in the Y and X directions at the predetermined position, and at the same time the mandrel is rotated to feed the raw tape roll and the butt-wound core sheet to the desired tape width. Cut. This cutting operation is repeated to obtain a tape roll cut to a predetermined width by moving the cutting tool in the X direction.

The present invention provides a step of spirally winding a winding core onto a rotating mandrel by butt-winding or gap-winding, and spirally winding a pressure-sensitive adhesive film thereon, as shown in FIG. 4. Preforming an annular material (referred to as a wound core sheet, considered as a pressure sensitive adhesive film) by means of the film, and inserting the annular material with the pressure sensitive adhesive film in a fixed manner and then in the same manner as described above Winding the tape onto the mandrel, and rotating the cutting tool in the Y and X directions at a predetermined position with the mandrel rotating to cut the raw tape to a predetermined width when a predetermined amount of raw tape roll has been reached. By cutting the raw tape into a predetermined width.

In the case of producing the annular material, each having a pressure-sensitive adhesive film, each winding core sheet is spirally wound on a rotating mandrel by an injection molding step of the winding core sheet, butt-winding or gap-winding using an injection machine. Following the taking step and winding the pressure-sensitive adhesive film thereon spirally and superimposed thereon, injection treatment may be possible.

Even in the case where the raw material tape is wound without cutting the raw material tape into round pieces according to the above-described embodiment of the present invention, the present invention is applicable in this case.

According to this embodiment of the present invention, a sacrificial tape bearing a brand name can be used, and thus the sacrificial tape can be left unremoved.

In addition, instead of the sacrificial tape, for example, a thin paper tube bearing an auxiliary core or a brand name can be used, in which state the paper tube does not adhere to the inner periphery of the annular body.

The tape rolls produced according to the invention use winding cores so that both edges of the winding core sheet are not connected to each other, and each winding core easily contacts toward the inner diameter when the tape base of the tape roll contacts. As a result, even when a tape base such as a polyvinyl pressure-sensitive adhesive tape shrinks due to roll tightening or residual stress, the tape roll can be kept to a good degree by preventing the tape roll side from tapering (like bamboo shoots).

This effect can be sufficiently predicted because the film stiffness is practically ignored even in the case of the annular material with the pressure-sensitive adhesive film.

This effect is particularly noticeable because the winding core is easily contacted by butt-winding when there is an edge to edge gap between both edges of the winding core sheet. Also, when the winding core comes out of the tape roll side, it can be easily corrected by butt-winding.

Further, even when the auxiliary winding core is provided inside, the above effect can be ensured because the outer winding core slides and contracts with respect to the auxiliary winding core.

5A is a side view of a tape roll made according to the invention, wherein the winding core sheet A is adhered to the inner surface of the annular tape roll B by butt-winding. As shown in FIG. 5B, foreign matter cannot enter and remain in the gap e between both edges of the wound core sheet A since there is no gap between both edges. In particular, when the annular tape roll is a pressure sensitive adhesive tape roll, the pressure sensitive adhesive flowing from the innermost edge of the pressure sensitive adhesive tape prevents the formation of adhesive bumps therein.

Thus, the wound core sheet does not form the articulated bump after the tape runs out and only the wound core sheet is left, so that the wound core sheet can be treated as a high purity recyclable material.

According to the above-described embodiment of the present invention, the material used for the wound core sheet A is not limited to a specific kind, and plastics such as polyethylene, polypropylene, and mixtures thereof, or paper or other plastic waste (for example, Recycled from plastics with different kinds of adhesives). Such wound core sheets may generally be about 2,000 μm to 500 μm.

As the pressure-sensitive adhesive film (a), an extremely thin film is used that allows the introduction and attachment of foreign matter to substantially eliminate the gap forming the adhesive bumps despite the butt-winding.

According to the above-described embodiment of the present invention, the annular tape roll (B) is not limited to a specific kind but may be made of plastic such as polyethylene, polypropylene and polyvinyl chloride, or paper, metal foil and their laminating agent or general pressure-sensitive adhesive. It can be made into another product with one of the coated bases.

In the tape roll produced according to the present invention, the inner diameter of each winding core is easily shrunk when the inner diameter of each winding core follows the shrinkage of the tape base of the tape roll. As a result, even when the tape base shrinks due to roll tightening or residual stress, the tape roll can be kept to a good degree by preventing the tape roll side from tapering (like bamboo shoots). In addition, only the annular body of the wound core sheet remains unconnected after the tape has been used, since the annular body can be easily expanded with a soft flat material before it is placed. In addition, the annular winding core sheet formed by the butt-wound has no gap with respect to the annular tape roll and also has no adhesive bumps, so that the winding core sheet without pressure-sensitive adhesive can be treated with high purity recyclable material.

Even in the case of an annular winding core sheet having a pressure-sensitive adhesive film formed by butt-winding, the winding core sheet can be treated as a high purity recycled material having no ringing paste. The separated pressure-sensitive adhesive film can likewise be arranged after it has become a compact mass.

Tape rolls made in accordance with the present invention can be easily formed into shapes that are difficult to roll, such as triangles, rectangles, ellipses, etc., to prevent them from being lost by clouds.

According to the present invention, after the tape roll is used, the remaining portion can be easily disposed of and recycled, and another tape roll can be provided previously in a substantially stable state.

Claims (20)

In tape rolls, An annular winding core comprising a winding core sheet, the winding core sheet having a first edge and a second edge, wherein the first and second edges face each other when the winding core sheet forms an annular winding core. The annular winding core, which is fixed and not fixed, An annular tape roll comprising an inner peripheral tape surface, The winding core is in intimate contact with the inner peripheral tape surface Tape rolls. The method of claim 1, The first and second edges have gaps and oppose each other Tape rolls. The method of claim 1, The first and second edges are in contact with each other Tape rolls. The method of claim 1, The first and second edges spiral around an axis of the winding core Tape rolls. The method of claim 1, The first and second edges extend substantially parallel to the axis of the winding core. Tape rolls. The method of claim 1, The tube is cylindrical Tape rolls. The method of claim 1, The tape is a pressure-sensitive adhesive tape, and the wound core sheet and inner peripheral tape surfaces forming the contact interface are adhered to each other by the pressure-sensitive adhesive of the pressure-sensitive adhesive tape itself. Tape rolls. In tape rolls, An annular body with a pressure-sensitive film, wherein the annular body comprises a winding core sheet, the winding core sheet having a first edge and a second edge, and wherein the winding core sheet forms a tube when the first core is formed. And the second edge is opposed to and fixed to each other, and the annular body has an outer surface constrained by the pressure-sensitive film; An annular tape roll having an inner peripheral tape surface, The annular body having the pressure sensitive film is in intimate contact with the inner peripheral tape surface Tape rolls. The method of claim 8, The first and second edges are opposed to each other by a gap Tape rolls. The method of claim 8, The first and second edges are in contact with each other Tape rolls. The method of claim 8, The tape is a pressure-sensitive adhesive tape, and inner circumferential tape surfaces forming a contact interface with the annular body having the pressure-sensitive adhesive film are attached to each other by a pressure-sensitive adhesive of the pressure-sensitive adhesive tape itself. Tape rolls. In the manufacturing method of a tape roll, Winding the wound core sheet onto the mandrel by one of butt-wrap and gap-wound to form one layer, Rewinding the raw tape onto the winding core sheet while rotating the mandrel; Taking the raw tape out of the mandrel; Method of manufacturing tape rolls. In the manufacturing method of a tape roll, Winding the wound core sheet onto the mandrel by one of butt-wrap and gap-wound to form one layer, Rewinding the raw tape onto the winding core sheet while rotating the mandrel; Cutting the raw tape into round slices; Taking out the cut raw tape out of the mandrel; Method of manufacturing tape rolls. The method of claim 12, Winding the binder pressure-sensitive adhesive film onto a butt-wrap or gap-wound winding core sheet; Rewinding a raw material tape onto the binder pressure-sensitive adhesive film. Method of manufacturing tape rolls. In the winding core for a tape roll, The annular body comprises a wound core sheet, The winding core sheet includes a first edge and a second edge, and when the winding core sheet forms the annular body, the first and second edges face each other and are not fixed. Winding core for tape rolls. The method of claim 15, Further comprising a pressure-sensitive adhesive film covering the outer surface of the annular body Winding core for tape rolls. The method of claim 15, The auxiliary core is provided in the inner periphery of the annular body in an unattached state. Winding core for tape rolls. The method of claim 16, The auxiliary core is provided in the inner periphery of the annular body in an unattached state. Winding core for tape rolls. The method of claim 17, The auxiliary core is a paper core Winding core for tape rolls. The method of claim 18, The auxiliary core is a paper core Winding core for tape rolls.