KR102234833B1 - Fabric tape with anchor layer and preparing method thereof - Google Patents

Abstract

The present invention relates to a fabric tape comprising an anchor layer between a base fabric and a laminating film, and a manufacturing method thereof.According to the present invention, a peeling phenomenon between the base fabric and the laminating film is prevented, and the tear property is improved to improve product quality. Can improve.

Description

A fabric tape including an anchor layer, and a method for manufacturing the same TECHNICAL FIELD [Fabric TAPE WITH ANCHOR LAYER AND PREPARING METHOD THEREOF]

The present invention relates to a fabric tape comprising an anchor layer and a method of manufacturing the same, and more particularly, to a fabric tape that can prevent peeling between the base fabric and the laminating film by including an anchor layer between the base fabric and the laminating film, and It relates to its manufacturing method.

Fabric tape is a generally widely used type of adhesive tape that can be torn by hand, and is currently used for various purposes, such as packing or packing work using paper boxes, and curing tape or health tape for building construction. In general, the fabric tape, as shown in Figs. 1 and 2, after laminating a polyethylene film 210 on one side of the base fabric 220 of the plain weave, and then the adhesion consisting of an adhesive on the opposite side where lamination has not been performed. It is prepared by applying the layer 230.

In terms of price competitiveness and quality stability, polyester yarns, which are synthetic fibers, are increasingly used as base fabrics for fabric tapes, rather than natural cotton yarns. However, as the laminating film, a non-polar film such as a polyolefin film such as a polyethylene film, a polypropylene film, a polybutylene film, and a copolymer film thereof is mainly used.

However, in the case of a polyester-based fabric having a polar property, the adhesion to a polyethylene film having a non-polar property is weak, and a delamination phenomenon often occurs, which is peeled off by an adhesive. This delamination phenomenon causes fatal defects in the smooth production of products and has a decisive effect on the quality of the product itself.

The present invention is to overcome the problems of the prior art described above, one object of the present invention is to coat a non-polar polyethylene film forming a laminating film on the base fabric of a fabric tape woven with a polyester yarn having a polar property. In the process, by introducing an anchor layer between the base fabric and the laminating film to prevent delamination due to low lamination strength, a fabric tape that improves the adhesion between the base fabric and the laminating film, thereby improving the mechanical strength of the fabric tape. Is to provide.

Another object of the present invention is to provide a method of manufacturing a fabric tape that can prevent the fabric from being easily peeled off and torn in the adhesive coating process during the fabrication of the fabric tape, or from the occurrence of residues on the cut surface when cutting the adhesive-coated fabric.

One aspect of the present invention for achieving the above object,

Between the base fabric and the laminating film comprising an anchor layer comprising at least one anchor agent selected from the group consisting of ethyl-vinyl acetate (EVA), acrylic, styrene, polyurethane, polyamide, polyethyleneimine, and polyester It relates to a fabric tape, characterized in that.

The anchor layer may have a thickness of 0.05 µm to 5 µm.

The base fabric may be composed of synthetic fibers selected from the group consisting of polyester, polyacrylic, polyamide, polyimide, polyethylene, and polypropene.

In the present invention, the laminating film may be composed of polyethylene, preferably a low-density polyethylene film.

Another aspect of the present invention for achieving the above object,

In manufacturing a fabric tape by laminating a laminating film on one side of the base fabric and then applying a pressure-sensitive adhesive to the other side that has not been laminated, ethyl-vinyl acetate (EVA), acrylic, styrene, polyurethane, It relates to a method for manufacturing a fabric tape, comprising the step of forming an anchor layer by applying at least one anchor agent selected from the group consisting of polyamide, polyethyleneimine, and polyester, followed by drying.

The anchor layer formation step includes coating the anchor solution on the base fabric by a mesh gravure method, a roll to roll method, a direct coating method, or a printing method, and It may include drying in a drying chamber at a temperature.

According to the present invention, by forming an anchor layer between the base fabric of the fabric tape and the laminating film, the bonding strength between the base fabric and the laminating film is strengthened, thereby increasing the lamination strength between the base fabric and the laminating film to prevent peeling. .

In addition, according to the present invention, it is possible to prevent the laminating fabric from bursting or peeling off from the laminating film in the fabric tape or curing/retention tape adhesion process during fabrication of the fabric tape.

1 is a schematic perspective view of a fabric tape.
2 is a schematic cross-sectional view of a typical fabric tape.
3 is a schematic cross-sectional view of a fabric tape according to an embodiment of the present invention.
4 is a schematic diagram of a general fabric tape manufacturing facility.

Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. In addition, in describing the present invention, detailed descriptions of related known general-purpose functions or configurations will be omitted.

One aspect of the present invention relates to a fabric tape comprising an anchor layer between the base fabric and the laminating film.

Figure 2 is a schematic cross-sectional view of the fabric tape of an embodiment of the present invention. Referring to Figure 2, the fabric tape 100 of an embodiment of the present invention is a base fabric 130, ethyl-vinyl acetate (EVA) coated on the base fabric 130, acrylic, styrene, polyurethane, polyamide , An anchor layer 120 comprising at least one anchor agent selected from the group consisting of polyethyleneimine and polyester, a transparent or colored laminating film 110 laminated on the anchor layer 120, and a base fabric 130 ) And an adhesive layer 140 that is laminated on the opposite surface of which the laminating film is not laminated.

In the fabric tape 100 of the present invention, the anchor layer 120 may increase the lamination strength between the laminating film 110 and the base fabric 130 to significantly reduce delamination defects caused by the adhesive.

In the present invention, the anchor layer 120 is used to combine the base fabric 130 and the laminating film 110, for example, ethyl vinyl acetate (EVA), acrylic, styrene, polyurethane, polyamide, polyethyleneimine and poly It may include one or more selected from the group consisting of ester-based anchor agents, and preferably, a polyurethane-based or polyethyleneimine-based anchor agent may be used.

The polyurethane resin can be applied to the process of laminating the laminating film 110 to the base fabric 130. Polyurethane resin exhibits excellent properties in terms of initial adhesion as well as final adhesion after aging. The final adhesive strength may exhibit a peel strength of about 20 to 50 g/inch when a polyethylene laminating film is used. The final adhesive strength depends on the type or structure of the fabric used, and may also vary depending on the amount of anchor solution applied.

It is preferable that a hydroxyl group remains as the said polyurethane resin. Specifically, for example, a lacquer-type polyurethane-based resin can be mentioned. The polyurethane-based anchor agent may form the anchor layer 120 by only drying and removing a solvent or water.

In the case of polyethyleneimine, as a high-adhesion, adsorption anchoring agent, the amino group of imine undergoes hydrogen bonding with a hydroxyl group, an ionic bond with a carboxyl group, and a covalent bond with a carbonyl group. Therefore, the laminated strength between the base fabric 130 and the laminating film 110 may be improved by using this comprehensive bonding force.

It is preferable that the thickness of the anchor layer 120 is 0.05 µm to 5 µm. When the anchor layer 120 is too thick, tearing property and water resistance are deteriorated, so the thickness of the anchor layer 120 is preferably 5 μm or less.

In the fabric tape 100 according to the present invention, the base fabric 130 is created by weaving weft and warp, and any kind of yarn used for the weft and warp may be used. The base fabric 130 has a shape cut according to a set standard. Knitted fabrics using warp and weft are mainly used. This knitted fabric is a weft knitting structure in which each warp is in an independent form to form a regular and uniform loop structure, and a weft yarn is inserted between the loops to weave, and the warp is between long fiber filaments, and the weft is formed of long fiber processed yarn (DTY). It is the base fabric for fabric tape.

For example, the base fabric 130 of the fabric tape may be a plain weave fabric or may be made of a weft inserting method as proposed by the present applicant in Korean Patent No. 1158529. The base fabric 130 for a fabric tape according to an embodiment of the present invention is made of a weft inserting type knitted fabric, and the knitted fabric has an independent warp to form a regular and constant open loop or a cloth loop structure, and between the loops It is formed as a stomach tissue in the form of weaving by inserting a weft thread. The weaving of the polyester fabric is made of independent warp yarns, each of which is warp, to form a loop structure of a certain rule, and a weft yarn is inserted between the loops to form a weaving structure in the form of weaving. The warp yarn is formed of filament yarn, and the weft yarn is formed of long fiber processed yarn to increase the frictional force of the weft yarn surface so that it can be more securely fixed to the loop formed on the warp to prevent slipping and improve adhesion to the film. have. In the fabric tape 200 according to an embodiment of the present invention configured as described above, the laminating film 110 is formed to be affected by the weaving structure of the base fabric 130 so as to have tearability in the weft direction, that is, the width direction. This is good.

The laminating film 110 used in the present invention may use a transparent film or a film of various colors depending on the use of the fabric tape. The laminating film 110 of the fabric tape of the present invention may use a polyethylene resin as a base resin. In addition, in order to improve the lamination strength and tear strength of the polyethylene resin, it is preferably a low-density polyethylene resin (LDPE). However, if necessary, in addition to low-density polyethylene, a second polyethylene selected from the group consisting of resins such as linear LDPE, very low density polyethylene, high density polyethylene, and polypropylene. You can add resin. However, it is preferable to mix high-density polyethylene (HDPE) in an amount of less than 30 wt%, and when mixing more than 30 wt%, the lamination strength may be lowered, and the adhesion between the polyester fabric and the film may be deteriorated. This is because high-density polyethylene having a high molecular weight polyethylene molecule has a higher degree of curing than that of low-density polyethylene, so that adhesion with a polar polyester fabric is inferior.

The base fabric 130 of the present invention has excellent handleability by using a long-fiber filament yarn as a warp, and because it can obtain superior strength with fine yarn compared to a short fiber, the base fabric can be made thin. In addition, since the long fiber filament yarn has a uniform fineness, when a fabric knitted with the long fiber filament yarn is used, a woven tape having a beautiful appearance can be manufactured. In addition, the long fiber processed yarn used as a weft yarn in an embodiment of the present invention has an advantage of having uniform fineness and superior weavability with a long fiber filament yarn compared to a short fiber.

In particular, short fibers mainly used as the base fabric 130 in the conventional fabric tape have a problem that not only the strength is weak, but also the fineness is not uniform, so that the adhesive raw material is often used in the post process, but is used in the base fabric of the present invention. The long-fiber filament yarn and the long-fiber processed yarn have uniform fineness of the fibers, so that the smoothness of the adhesive layer can be increased, and as a result, the amount of the pressure-sensitive adhesive can be reduced.

Polyester, polyamide, viscose rayon, acetate, polyurethane, etc. may be used as the material of the warp and weft constituting the base fabric 130 of the present invention, and long fibers in terms of water resistance and other physical properties, especially in terms of weavability It is preferable to use.

As the material of the weft yarn of the base fabric 130, it is preferable to use a long fiber processed yarn, preferably a polyester DTY (draw textured yarn) yarn. The base fabric of the present invention is characterized in that it is knitted in a weft knitting machine. In addition, since the base fabric of the present invention is made of long-fiber processed yarn, the surface friction of the weft yarn is increased, so that it can be more reliably fixed to the loop formed on the warp, so that the warp and the weft are not pushed.

In addition, the density of the warp yarn and the weft yarn may be appropriately adjusted according to the use of the fabric tape, but in the case of warp yarn, it is preferably 12 to 24 yarns/inch, and in the case of weft yarn, it is preferably 22 to 40 yarns/inch. Even if either of the warp/weft density is too small, it is difficult to obtain the strength of the base fabric, and if the warp/weft density is high, the strength of the base fabric is secured, but the number of inserts of the warp and weft yarns increases, thereby reducing productivity. The thickness of the warp and weft may also be appropriately selected and used according to the use of the fabric tape, but in the case of warp, the range of 30 to 75 denier is preferable, and in the case of weft, the range of 50 to 300 denier is preferable.

The adhesive layer 140 formed on the opposite side of the laminating film 110 based on the base fabric 130 is composed of an adhesive uniformly applied to the surface of the base fabric 130.

In addition, as the pressure-sensitive adhesive used in the present invention, various pressure-sensitive adhesives such as natural rubber, synthetic rubber, acrylic, hot melt, etc. can be used, but when a thin adhesive layer is required, an acrylic pressure-sensitive adhesive having a high bonding strength is preferable.

Another aspect of the present invention relates to a method of manufacturing a fabric tape. In the method of the present invention, in manufacturing a fabric tape by laminating a laminating film on one side of the base fabric and then applying a pressure-sensitive adhesive to the other side of the base fabric, ethyl-vinyl acetate (EVA), acrylic, and At least one anchor agent selected from the group consisting of styrene, polyurethane, polyamide, polyethyleneimine and polyester is applied and dried to form an anchor layer.

The anchor layer formation step is after coating an anchor solution with a viscosity of 1000 to 5000 cps on the base fabric by a mesh gravure method, a roll to roll method, a direct coating method, or a printing method. The anchor layer is formed by drying in a drying chamber at a temperature of 70°C to 100°C.

3 is a view showing a manufacturing process capable of carrying out the fabric tape manufacturing method of the present invention. Referring to Figure 3, the laminating film 311 unwound from the film winding roll 310 and the fabric winding roll 320, and the base fabric 321 on which the anchor layer is formed are laminated films by guide rollers 330a and 330b. 311) is aligned to one side and conveyed.

The anchor layer is performed by a separately formed anchor coater and dryer. At this time, the viscosity of the anchor solution is preferably 1000 to 5000 cps, more preferably 2000 to 3000 cps. When the viscosity of the anchor solution is higher than 5000 cps, there is a problem that it is difficult to transfer a uniform amount to the surface of the base fabric to be bonded due to the decrease in the flowability of the anchor solution, and when it is lower than 1000 cps, the base fabric or laminating film to be bonded This is because it becomes very difficult to control the exact shape and quantity on the surface of the.

When the base fabric on which the anchor layer is formed and the laminating film are aligned, the laminating film 311 and the base fabric 321 discharged by the guide rollers 330a and 330b are then heated and pressed rollers 340a to generate high-temperature heat. By passing through 340b), the laminating film 311 and the base fabric 321 are combined with each other. Subsequently, the laminated laminating film 311 and the base fabric 321 are cooled while passing through the cooling rollers 350a and 350b, are wound on a winding roll 360, and then the laminating film 311 and the base fabric 321 In the combined state, fabrication of the fabric tape is completed by going through a separate process of applying an adhesive on the base fabric 321.

In general, in the manufacture of fabric tapes, the adhesive is a solvent-free type, and a solid adhesive is used, and the adhesive is applied while passing through the calender roller of the adhesive coating machine, but a liquid adhesive such as rubber or acrylic dissolved in the solvent is used as a solvent type. It can also be carried out by drying the solvent.

The method of forming the adhesive layer is not particularly limited, and for example, roll coating, kiss roll coating, gravure coating, reverse coating, roll brushing, spray coating, dip roll coating, bar coating, knife coating, air knife coating, curtain coating, lip Methods, such as an extrusion coating method using coating, a die coater, etc., are mentioned. The thickness of the adhesive layer is not particularly limited and is, for example, about 1 to 100 µm. It is preferably 2 to 50 µm, more preferably 2 to 40 µm, and still more preferably 5 to 35 µm.

Hereinafter, the present invention will be described in more detail by way of examples. However, the following examples are for illustrative purposes only, and the scope of the present invention is not construed as being limited by the examples. Both parts and percentages in each example are based on weight. Unless otherwise specified below, the conditions for standing at room temperature are all 23°C and 65% RH.

Example

Comparative Example 1

Warp 30 denier weft 75 denier DTY (draw textured yarn, processed yarn) A polyethylene film (40 g/m ² ) was laminated on one side of the knitted fabric. At this time, the polyethylene film was 100% LDPE (low density polyethylene), coated by T-DIE extrusion, and the coating operation speed was an average of 60 m/min.

Examples 1 to 3: Measurement of the lamination strength of knitted fabrics according to the concentration of polyurethane solids

An anchor layer was formed on the same fabric as Comparative Example 1 using a solvent-type polyurethane anchor solution on the warp 30 denier weft 75 denier DTY (processing) knitted fabric. Ethyl acetate was used as a diluting solvent for the solvent-type polyurethane anchor solution, and the solid content of the main material was 65%, and the solid content of the hardener was 75% of the polyurethane-based anchoring agent.

An anchor solution having a viscosity of 3000 cps was coated on a polyester base fabric at a rate of 60 m/min ^{by a mesh gravure method with a roll temperature of 70 to 100 o} C and a maturation condition of 50 ^{o C for 48 hours.}

It was dried at a drying chamber temperature of 70 to 100 ^o C to form a polyurethane anchor layer.

At this time, the final solid content concentration was performed differently as shown in Table 1 below, and the anchor layer coating was applied ^{from 2g to 5g/m 2 based on the polyurethane solid content.} After the anchor layer was formed, low-density polyethylene laminating was performed.

The peeling strength between the base fabric and the laminating film at the left edge (L), the center (C), and the right edge (R) of the fabric tapes prepared in Examples 1 to 3 and Comparative Example 1 was measured by the American Test Materials Association. It was measured according to the ASTM D3330 test method of, and the results are shown in Table 1 below.

Comparative Example 1 Example 1 Example 2 Example 3 Solid content 0% 15% 20% 25% location L C R L C R L C R L C R Lamination strength
(gf/25㎜) 25 31 27 68 100 74 153 171 143 242 193 214 Average
(gf/25㎜) 27.6 80.6 155.6 216.3

As can be seen from the results of Table 1, the fabric of the fabric tapes of Examples 1 to 3 in which the anchor layer of the present invention was introduced, it can be seen that the bonding strength between the base fabric and the laminating film is significantly improved. As described above, according to the present invention, it is possible to significantly improve the peeling of the film by improving the bonding strength between the base fabric and the laminating film.

As the concentration of solids increased, the laminating strength of the laminating film increased.If the concentration of solids exceeded 30%, the curing reaction rapidly increased, making it impossible to work, and it was confirmed that the solid content of 25% is the optimal solids concentration. In the case of 25% solid content, the lamination strength increased by 7.8 times compared to the case where the urethane-based adhesive was not used.

Comparative Examples 2 and 4 to 6: Measurement of the lamination strength of fabric fabrics according to the concentration of polyurethane solids

Warp 50 denier weft 150 denier DTY After forming an anchor layer in the same manner as in Example 1 using a 20% solid content polyurethane anchor solution on the fabric, a polyethylene film (85 g/m²) Was laminated. The final solid content concentration was varied as indicated in Table 2 below, and at this time, the anchor layer coating was 5 g to 8 g/m based on the polyurethane solid content.²Applied.

The peel strength between the base fabric and the laminating film at the left side (L), the center (C), and the right side (R) of the fabric tapes prepared in Examples 4 to 6 and Comparative Example 2 was measured as in Example 1. It measured by the same method, and the results are shown in Table 2 below.

Comparative Example 2 Example 4 Example 5 Example 6 Solid content 0% 15% 20% 25% Measurement location L C R C R R L C R S C R Lamination strength (gf/25㎜) 44 54 65 120 133 113 194 224 210 294 278 312 Average (gf/25㎜) 54.3 140.1 209.3 294.6

As can be seen from the results of Table 2, in the case of the woven fabric of the present invention, when the solid content was raised to the level of 25%, the lamination strength was averaged at 294.6 gf/25 mm level, and the comparison without treatment with the anchor agent Lamination strength increased by 5.4 times compared to the base fabric of the example.

Comparative Examples 3 and 7-9: Lamination strength according to polyethyleneimine solid content concentration

The same fabric as Example 1, the warp 30 denier weft yarn 75 denier DTY (processing), was applied to the knitted fabric by diluting the polyethyleneimine anchor solution to the concentration of the table below using water containing 30% methanol. The application was performed using a gravure coating method, and the amount of application was 0.3 to 3 g/m ² based on solid content. The polyethylene film layer was ^{at the level of 40 g/m 2} and was coated by a T-DIE extrusion coating method.

Polyethyleneimine anchor solution having a viscosity of 3000 cps on a polyester base fabric was coated at a rate of 60 m/min at a ^{roll temperature of 80 to 100 o} C and a maturation condition of 50 ^{o C for 48 hours by a mesh gravure method, and the drying chamber temperature} It ^{dried at 80-100 o} C to form a polyethyleneimine anchor layer.

The peel strength between the base fabric and the laminating film at the left edge (L), the center (C), and the right edge (R) of the fabric tapes prepared in Examples 7 to 9 and Comparative Example 3 was measured as in Example 1. It was measured by the same method, and the results are shown in Table 3 below.

Comparative Example 3 Example 7 Example 8 Example 9 Solid content 0% 3% 6% 15%
Measurement location L C L C R Ooh L C R L C R Lamination strength
(gf/25㎜) 25 31 27 29 27 25 35 31 43 51 56 65 Average
(gf/25㎜) 27.6 27 36.3 69.4

As can be seen from the results of Table 3, when the polyethyleneimine anchor layer is formed according to the present invention, the lamination strength is increased by up to 2.5 times depending on the solid content compared to the case of the comparative example in which the polyethyleneimine anchor layer is not formed. I did.

In the above, the present invention has been described in detail with reference to the preferred embodiments of the present invention, but the present invention is not limited to the above-described embodiments. It will be obvious that transformation is possible. For example, in the above, mainly a fabric tape has been described as an example, but the present invention is not limited thereto, and the present invention is applicable to double-sided tapes, decorative ribbons, and the like.

100: fabric tape 110: laminating film
120: anchor layer 130: base fabric
140: adhesive layer

Claims (9)

An anchor layer containing at least one anchor agent selected from the group consisting of styrene, polyurethane, polyamide, polyethyleneimine, and polyester is included between the base fabric and the laminating film, and the base fabric is a loop having a regular inclination. A fabric tape, characterized in that it consists of a knitted fabric formed of a top-knit structure in which a tissue is formed and a weft is inserted between loops to weave.
The fabric tape according to claim 1, wherein the fabric tape comprises a base fabric, a laminating film formed on one or both sides of the base fabric, and an adhesive layer formed on the opposite side of the laminating film.
The fabric tape of claim 1, wherein the anchor layer has a thickness of 0.05 µm to 5 µm.
The method of claim 1, wherein the laminating film is composed of a polyethylene film selected from the group consisting of low density polyethylene (LDPE), linear low density polyethylene (linear LDPE), ultra low density polyethylene (VLDPE), and high density polyethylene (HDPE). Fabric tape characterized by.
The fabric tape of claim 1, wherein the base fabric is made of synthetic fibers selected from the group consisting of polyester, polyacryl, polyamide, polyimide, polyethylene, and polypropene.
In manufacturing a fabric tape by laminating a laminating film on one side of the base fabric and then applying a pressure-sensitive adhesive to the other side that has not been laminated, it is composed of styrene, polyurethane, polyamide, polyethyleneimine, and polyester on one side of the base fabric. It includes the step of forming an anchor layer by applying at least one anchor agent selected from the group and drying it, and forming a loop structure having a regular warp with the base fabric, and inserting a weft yarn between the loops to weave. A method of manufacturing a fabric tape, characterized in that using a knitted fabric formed from a weft-knit structure.
The method of claim 6, wherein the base fabric is made of synthetic fibers selected from the group consisting of polyester, polyacryl, polyamide, polyimide, polyethylene, and polypropene.
The method of claim 6, wherein the laminating film is made of a polyethylene film.
The method of claim 6, wherein the forming of the anchor layer comprises coating an anchor solution having a viscosity of 1000 to 5000 cps on the base fabric by a mesh gravure method, a roll-to-roll method, a direct coating method, or a printing method, and 70° C. to 100° C. A method of manufacturing a fabric tape comprising the step of drying in a drying chamber at a temperature of.

Images