KR101605380B1 - adhesive tape using non woven fabrics - Google Patents

Abstract

The present invention relates to a pressure-sensitive adhesive tape using a nonwoven fabric which can be easily cut by hand as well as improved productivity and productivity by simplifying a manufacturing process, and includes a nonwoven fabric in which cut-out grooves are formed at regular intervals in the width direction; A pressure sensitive adhesive laminated on the inner surface of the nonwoven fabric; And a resin film laminated on the outer surface of the nonwoven fabric.

Description

[0001] The present invention relates to an adhesive tape using non woven fabrics,

The present invention relates to an adhesive tape, and more particularly, to an adhesive tape using a nonwoven fabric which can be easily cut by hand as well as improving the productivity by improving the productivity and improving the tackiness.

Adhesive tapes are made by applying pressure-sensitive adhesive to paper, cloth, plastic film, etc., and are used to fix an object to another object or to protect a specific part of an object by covering it.

There are various types of such adhesive tapes, and one of them is a fabric tape.

Fabric tapes are made by wrapping rolls of fabric in the form of a net made of warp and weft, coated with a coating material such as PVC or PE, coated on the opposite side of the coated side of the fabric, rolled in roll form, .

The technology related to such a fabric tape includes various technologies including Patent Documents 1 to 3. Patent Document 1 discloses a technique in which woven fabrics and fabrics embedded in the fabrics are bonded at the overlapping points of the fabric fibers and the seed fibers, And a pressure sensitive adhesive applied on at least a part of the polymer, the pressure sensitive adhesive tape being capable of being manually cut in the longitudinal direction,

Patent Document 2 discloses a backing fabric material; And a pressure sensitive adhesive coated on at least one side of such a backing and comprising at least one vinyl aromatic block copolymer and an at least partially hydrogenated pressure sensitive adhesive resin,

Patent Document 3 relates to an adhesive tape composed of a woven fabric, a carrier which is preferably a woven polyester fabric, and a pressure-sensitive adhesive layer applied on at least one side of the pressure-sensitive adhesive tape, wherein an adhesive tape per unit width of a longitudinal thread The ratio of the linear density per unit length of the transverse thread to the linear density is 2.2 to 6, and the carrier has a basis weight of 110 g / m < 2 > or more.

Since the conventional fabric tape is made of a fabric, a process of weaving the fabric is required, and in the weaving process, it takes a long time to weave the fabric by weaving warp and weft.

As a technique developed to overcome such disadvantages, there is an adhesive tape made using a nonwoven fabric as in Patent Documents 4 and 5.

Patent Document 4 relates to a method for producing a heatable adhesive tape comprising mixing a polyamide resin as a nonwoven material with chloroform and stirring the mixture at 40 DEG C for 4 hours and 30 minutes to prepare a solution, ,

Patent Document 5 discloses a nonwoven fabric comprising a nonwoven fabric layer made of a polymeric material resin, a resin-coated layer formed on one surface of the nonwoven fabric layer, a pressure-sensitive adhesive layer formed on the other surface of the nonwoven fabric layer, And a hardening step is formed in the form of a straight line so that the adhesive tape can be easily cut without a separate cutter or the like.

The adhesive tape made using such a nonwoven fabric has advantages of simplifying the manufacturing process and improving durability because there is no weaving process.

However, in the case of manufacturing according to Patent Document 4, there is a gap between the polyamide yarns forming the nonwoven fabric, which not only thickens the adhesive tape, but also weakens the strength. In the case of forming a hardening step as in Patent Document 5, Since it takes a lot of time to produce the high temperature and high pressure in the process of forming the flower bed, if the temperature control is not performed accurately, the hardened portion will be excessively cured and boiled, The ductility is deteriorated due to the formation of the hardening step.

1. Korean Patent Publication No. 1999-0072199 2. Korean Patent Publication No. 2009-0004592 3. Korean Patent Publication No. 2011-0031090 4. Korean Patent Publication No. 1997-0010912 5. Korean Patent No. 1336715

It is an object of the present invention to provide an adhesive tape using a nonwoven fabric which can be easily cut by hand as well as the productivity is improved and the tackiness is improved by simplifying the manufacturing process .

To achieve the above object, there is provided an adhesive tape using a nonwoven fabric, comprising: a nonwoven fabric having cutouts formed at regular intervals in a width direction; A pressure sensitive adhesive laminated on the inner surface of the nonwoven fabric; And a resin film laminated on the outer surface of the nonwoven fabric.

Between the pressure-sensitive adhesive and the nonwoven fabric, a binder is preferably further laminated so that the pressure-sensitive adhesive is more strongly adhered to the nonwoven fabric.

It is also preferable that the cut-out groove formed in the resin film is relatively small and densely formed as compared with the cut-out groove formed in the nonwoven fabric.

Wherein the resin film comprises a first polyethylene or polypropylene having a density of 0.917 to 0.921 g / cm3, a second polyethylene or polypropylene having a density of 0.912 to 0.914 g / cm3, a third polyethylene or polypropylene having a density of 0.936 to 0.938 g / cm3, (Master Batch) to the nonwoven fabric.

The nonwoven fabric is preferably made of filament yarn.

The pressure-sensitive adhesive may be prepared by mixing 18 to 28% by weight of natural rubber, 25 to 37% by weight of RESIN, 5 to 15% by weight of polybutene, and 38 to 52% by weight of calcium carbonate .

As described above, the adhesive tape using the nonwoven fabric according to the present invention has the effect of improving the productivity by simplifying the manufacturing process of the adhesive tape by producing the adhesive tape using the nonwoven fabric.

The nonwoven fabric can also be produced by laminating a pressure-sensitive adhesive and a film.

Furthermore, the cutout grooves can be formed on both the nonwoven fabric and the film, so that the cutout grooves can be cut along the cutout grooves more easily, thereby facilitating taping work.

1 is a perspective view of an example of a roll with an adhesive tape wound thereon using the nonwoven fabric according to the present invention.
2 is an enlarged perspective view of a part of an adhesive tape using the nonwoven fabric according to the present invention.
3 is a cross-sectional view of an example of a laminated structure of an adhesive tape using a nonwoven fabric according to the present invention
4 is a cross-sectional view of another example of the laminated structure of the adhesive tape using the nonwoven fabric according to the present invention

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Like reference numerals are used for like elements in describing each drawing. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.

INDUSTRIAL APPLICABILITY The adhesive tape of the present invention can simplify the manufacturing process, has excellent stretchability and ductility, and can be easily cut and used by hand.

The adhesive tape 10 using the nonwoven fabric according to the present invention is formed by applying a pressure-sensitive adhesive 12 to a nonwoven fabric 11 and is wound on a roll 20 as shown in Fig.

The nonwoven fabric adhesive tape 10 thus made has a disadvantage in that the conventional woven adhesive tape is torn in a certain direction by hand even when the woven fabric is torn in a certain direction.

Accordingly, in the present invention, the cut-out groove 11g is formed in the nonwoven fabric 11 so that the adhesive tape made of the nonwoven fabric 11 can be easily torn in a predetermined direction. That is, as shown in Tables 2 to 5, the cut grooves 10g and 11g are formed in the width direction of the adhesive tape 10 so that the tape can be cut easily by hand.

Of course, the adhesive tape 10 based on a nonwoven fabric is formed by laminating a pressure-sensitive adhesive 12 and a resin film 13 like ordinary adhesive tapes.

The cutout groove 11g may be formed when a nonwoven fabric is manufactured by forming a fine blade on a roller that rolls the nonwoven material when fabricating the nonwoven fabric.

Thus, even if the cut-out groove 11g is formed only in the nonwoven fabric 11, the adhesive tape can be easily cut along the cut-out groove 11g.

That is, in the process of manufacturing the nonwoven fabric adhesive tape, the material of the resin film 13 is supplied to one surface (the surface on which the cutout groove is formed) of the nonwoven fabric while continuously supplying the nonwoven fabric 11 formed with the cutout groove 11g, Cutting grooves 13g may be formed in the resin film 13 opposed to the cut grooves 11g formed in the nonwoven fabric 11 as shown in FIG. Therefore, if the cut-out groove 11g is formed only in the nonwoven fabric 11, the cut-out groove 13g can be formed in the corresponding resin film 13, so that it is not necessary to form the cut-out groove in the resin film 13.

However, in the process of applying the raw material of the resin film 13, the cutout groove 11g formed in the nonwoven fabric 11 can be filled, and when the cutout groove 11g formed in the nonwoven fabric 11 is filled, 4, the cut-out grooves 13g are formed in the resin film 13, and the cut-out grooves 13g are formed at finer and narrower intervals than the cut-out grooves 11g formed in the nonwoven fabric, (13g). The reason for this is that the cutout groove 13g in the resin film forms a fine blade on the outer peripheral surface of the discharge roller for discharging the tape in the process of discharging the resin film 13 after the resin film 13 is applied to the nonwoven fabric 11, And in this process, the cut-out groove 13g formed by the blade of the discharge roller can not be accurately aligned with the cut-out groove 11g formed in the nonwoven fabric 11. That is, the interval of the cutout grooves 13g formed in the resin film 13 is relatively narrower than the interval of the cutout grooves 11g formed in the nonwoven fabric, and the depth of the cutout grooves 13g is relatively low, Any one of the plurality of cut-out grooves 13g formed in the nonwoven fabric 13 is aligned with the cut-out grooves 11g formed in the nonwoven fabric 11, so that it can be cut by hand.

Further, the adhesive tape 10 using the nonwoven fabric according to the present invention may further include a binder 14 between the pressure-sensitive adhesive and the nonwoven fabric so that the pressure-sensitive adhesive is more strongly adhered to the nonwoven fabric.

The binder 14 is used to prevent the adhesive 12 from segregating from the nonwoven fabric by allowing the adhesive 12 to permeate the nonwoven fabric 11. The binder 14 may be selected from various binders used for manufacturing the adhesive tape.

The adhesive tape using the nonwoven fabric according to the present invention constructed as described above can be made using nonwoven fabrics of various materials, but preferably nonwoven fabrics made using filament yarns are used.

The pressure sensitive adhesive 12 is a means for adhering the adhesive tape 10 to a desired place, and may be any one of a non-solvent rubber adhesive, a solvent rubber adhesive and an acrylic adhesive depending on the type, , Acrylic system, or silicon system may be used.

For example, 18 to 28% by weight of rubber containing natural rubber and synthetic rubber, 25 to 37% by weight of resin RESIN, 5 to 15% by weight of polybutene and 38 to 52% by weight of calcium carbonate It is preferable to apply it by coating.

In addition, the resin film may be made of various resins having appropriate stretching properties, and preferred examples thereof include first polyethylene or polypropylene having a density of 0.917 to 0.921 g / cm3, a second polyethylene having a density of 0.912 to 0.914 g / cm3 Polyethylene or polypropylene, a third polyethylene or polypropylene having a density of 0.936 to 0.938 g / cm < 3 >, and a master batch.

10: Adhesive tape
11: Nonwoven fabric 11g: Cutting groove
12: Adhesive
13: Resin film 13g: Cutting groove
14: Binder
20: Rollers

Claims (7)

A nonwoven fabric 11 having a plurality of cutout grooves 11g formed in a width direction thereof;
A pressure-sensitive adhesive (12) laminated on the inner surface of the nonwoven fabric; And
And a resin film (13) laminated on the outer surface of the nonwoven fabric,
The cutting grooves 11g formed in the nonwoven fabric 11 are spaced apart from the adjacent cutout grooves 11g by a first distance,
A plurality of cutout grooves 13g are formed in the resin film 13 in the width direction of the resin film 13,
The cutout groove 13g formed in the resin film 13 is spaced apart from the adjacent cutout groove 13g by a second interval,
Wherein the second gap is smaller than the first gap,
And the second gap is smaller than the first gap so that the position of the cutout groove formed on the resin film matches the position of the cutout groove formed in the nonwoven fabric. The method according to claim 1,
Wherein a binder is further laminated between the pressure-sensitive adhesive and the nonwoven fabric so that the pressure-sensitive adhesive is more strongly adhered to the nonwoven fabric. delete delete delete The method according to claim 1,
Wherein the nonwoven fabric is made of filament yarn. The method according to claim 1,
Wherein the pressure-sensitive adhesive is any one of a non-solvent type rubber pressure-sensitive adhesive, a solvent-type rubber pressure-sensitive adhesive, and an acrylic pressure-sensitive adhesive.

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