KR102452666B1 - Thermally Activated Adhesive Tape for Athleisure Materials - Google Patents

Abstract

The present invention relates to a thermally active adhesive tape for athleisure materials, comprising: 61 to 67 wt % of styrene-butadiene-styrene copolymer; 15 to 19 wt % of terpene phenol resin; 16 to 20 wt % of polyterpene resin; and 0.8 to 1.2 wt % of antioxidant, wherein the polyterpene resin may be composed of two or more monoterpenes. According to the present invention, there is no need to remove the water-repellent treatment agent in the heat-activated bonding process for bonding a logo or a seam to a fluorine-based membrane, no heating is required for logo or seam temporary adhesion, and excellent adhesion to fluorine-based membrane materials with low surface energy can be provided. Also, the temperature of the bonding (heating press) process after the temporary bonding is low, and the water resistance and peeling strength can be improved to prevent the edge of the logo from peeling during the washing process.

Description

Thermally Activated Adhesive Tape for Athleisure Materials

The present invention relates to a composition of a thermally active adhesive tape for athleisure materials, and more particularly, to a thermally active adhesive tape for athleisure materials having excellent adhesive strength to a fluorine-based membrane (eg, E-PETE).

Athleisure is a new word that combines the words athletic and leisure.

Athleisure Look is accelerating market growth due to consumers' well-being culture and desire for a balance between comfort and style.

The athleisure look market reflects the needs of consumers who want to reduce weight and pursue style at the same time so that they can enjoy light walking and running activities. In other words, E-PTFE (Expanded PTFE, hereinafter fluorine-based membrane) is laminated to the inner liner or outer fabric, and stretch technology has been applied to the product.

The fluorine-based membrane is a material suitable for providing athleisure with functions such as windproof, waterproof, and moisture permeability.

However, since the fluorine-based membrane has the lowest surface energy among polymers (fluorine membrane 23, nylon 40, polyester 45 mN/m), there is a problem in that adhesion by chemical bonding is difficult. This means that it is difficult to attach a logo or the like to the surface.

In general, acrylic adhesive tape is used for materials with low surface energy, but the adhesive strength is low, and the heat-sealing film is suitable for materials with high surface energy such as polyurethane. It causes wrinkles (puckering), so it is not suitable for use in athleisure look with a 2-layer fluorine-based membrane applied.

International Publication WO 2014/033770

In the present invention, there is no need to remove a water repellent agent in the thermally active bonding process of adhering a logo or a seam to a fluorine-based membrane, and there is no need for heating when temporarily adhering a logo or a seam, and a fluorine-based membrane material having low surface energy Thermal activity for athleisure materials with improved water resistance and peel strength to prevent the problem of the logo from peeling off during the washing process. One purpose is to provide an adhesive tape.

The thermally active adhesive tape for athleisure material according to the present invention contains 61 to 67 wt% of a styrene-butadiene-styrene copolymer, 15 to 19 wt% of a terpene phenol resin, 16 to 20 wt% of a polyterpene resin, and 0.8 to 1.2 wt% of antioxidant, and the polyterpene resin may be composed of two or more types of monoterpenes.

In the thermally active adhesive tape for athleisure material according to the present invention, the styrene-butadiene-styrene copolymer may contain 70 to 80% of a styrene-butadiene diblock component.

In the thermally active adhesive tape for athleisure material according to the present invention, the polyterpene resin may be composed of α-terpene and β-terpene.

In the thermally active adhesive tape for athleisure material according to the present invention, the polyterpene resin may be composed of α-terpene and dipentene.

In the thermally active adhesive tape for athleisure material according to the present invention, the polyterpene resin may have an α-terpene content of 77 to 82%.

In the thermally active adhesive tape for athleisure material according to the present invention, the glass transition temperature of the terpene phenol resin may be 70 ~ 72 ℃.

In the thermally active adhesive tape for athleisure material according to the present invention, the glass transition temperature of the polyteprene resin may be 90 ~ 95 ℃.

In the thermally active adhesive tape for athleisure material according to the present invention, the hydroxyl value of the terpene phenol resin may be 140 to 160.

In the thermally active adhesive tape for athleisure material according to the present invention, the content of the styrene-butadiene-styrene copolymer is 64wt%, the content of the terpene phenol resin is 17wt%, and the content of the polyterpene resin is 18wt%, The content of the antioxidant may be 1 wt%, and the polyterpene resin may be composed of 14 wt% α-terpene and 4 wt% β-terpene.

According to the present invention, there is provided a thermally active adhesive tape for athleisure materials with improved water resistance and peeling strength so as to prevent the problem of the logo from peeling off during the washing process.

According to the present invention, there is no need to remove the water repellent agent in the thermally active bonding process of bonding a logo or a seam to the fluorine-based membrane.

According to the present invention, there is no need for heating when temporarily bonding a logo or a seam, excellent adhesion to a fluorine-based membrane material having low surface energy, and a low temperature of the bonding (heating press) process after temporary bonding have

Hereinafter, the present invention will be described in detail. However, the present invention is not limited or limited by the exemplary embodiments, and the object and effect of the present invention can be naturally understood or made clearer by the following description, and the object and effect of the present invention can be achieved only with the following description. It is not limited. In addition, in the description of the present invention, if it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

The thermally active adhesive tape for athleisure material according to the present invention contains 61 to 67wt% of styrene-butadiene-styrene copolymer (hereinafter referred to as 'SBS'), 15 to 19wt% of terpene phenol resin, and 16 to 20wt% of It contains a polyterpene resin and 0.8 to 1.2 wt% of an antioxidant, and the polyterpene resin may be composed of two or more mono-terpenes.

Preferably, in the thermally active adhesive tape for athleisure material according to the present invention, the content of the styrene-butadiene-styrene copolymer is 64wt%, the content of the terpene phenol resin is 17wt%, and the content of the polyterpene resin is 18wt% (α -terpene is composed of 14wt% and β-terpene 4wt%), and the content of antioxidant is composed of 1wt%.

The thermally active adhesive tape for athleisure materials according to the present invention means that the semi-solid adhesive can be melted by heat and pressure, and can be restored to the initial semi-solid state when the applied heat and pressure are removed. · It means adhesive.

Therefore, once heat is applied, it is distinguished from a thermosetting adhesive that does not recover to its initial state even if the applied heat is removed.

The optimum adhesive properties may depend on the unit structure of the styene domain and the butadiene domain of SBS rubber (triblock, diblock, and radial), the content of styrene, and the selection of a tackifier.

In the present invention, when the SBS content exceeds 67wt% and the content of the terpene phenol resin and the content of the polyterpene resin are less than 15wt% and 16wt%, respectively, the adhesive strength of the thermally active adhesive tape for athleisure material may be sharply reduced.

In addition, when the SBS content is less than 61wt% and the content of the terpene phenol resin and the content of the polyterpene resin exceed 19wt% and 21wt%, respectively, the thermally active adhesive tape for athleisure material has adhesiveness (hereinafter referred to as 'tack') ) may be lost and it may be impossible to weld at room temperature.

In addition, in the present invention, the styrene-butadiene-styrene copolymer is preferably composed of 70 to 80% of the styrene-butadiene diblock component.

On the other hand, in order to increase the adhesion to the fluorine-based membrane, which is the object of the present invention, the fluorine-based membrane that provides the athleisure look with functions such as windproof, waterproof and moisture permeability is reduced due to the fine pores of 0.1 to 0.2um. needs to be improved.

It is necessary to improve wetting so that the adhesive can sufficiently penetrate between the pores, which requires an appropriate content of the tackifier (polyterpene resin in the present invention).

In addition, even after adhesion to the fluorine-based membrane is made, it is necessary to prevent the adhesion from falling off or the deformation of the logo from occurring during the washing process, which prevents polarity control of the tackifier (polyterpene resin in the present invention). can be resolved through

The polarity control of the tackifier can be obtained through the combination of three (α-terpene, β-terpene, dipentene) types of mono-terpenes having different polarities.

It is possible to obtain an appropriate polarity by composing the polyterpene resin with two types of monoterpenes.

Preferably, the polyterpene resin is composed of α-terpene and β-terpene, or composed of α-terpene and dipentene, but it is necessary to configure the polyterpene resin to have an α-terpene content of 77 to 82% in each. Preferably, the ratio of α-terpene and β-terpene is configured to be 7:2.

In addition, in the present invention, the terpene phenol resin is preferably composed of a glass transition temperature of 70 ~ 72 ℃. This means that it is lower than the styrene domain (90-95° C.) of the styrene-butadiene-styrene copolymer.

In addition, in the present invention, the glass transition temperature of the polyteprene resin is preferably configured to be 90 ~ 95 ℃. This means that it is similar to the styrene domain (90-95° C.) of the styrene-butadiene-styrene copolymer.

In addition, in the present invention, the hydroxyl value of the terpene phenol resin is preferably configured to be 140 to 160.

Raw material
(wt%) Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 SBS-1 64 64 64 64 SBS-2 64 SBS-3 64 SBS-4 64 TP-1 17 17 17 17 17 TP-2 17 TP-3 17 αT-1 14 14 14 14 14 14 αT-2 18 βT 4 4 4 4 4 4 antioxidant One One One One One One One total 100 100 100 100 100 100 100 peel strength
(N/15mm) 21.3 22.5 5 5 13.4 9.6 13.6

SBS-1 SBS-2 SBS-3 SBS-4 manufacturing company Kraton TSRC Kraton TSRC product name Kraton D1118 Taipol 4270 Kraton D1102 Vector 4211A Styrene content (%) 31 37 28 30 Double block content (%) 78 70 16 <1

TP-1 TP-2 TP-3 manufacturing company Kraton DRT DRT product name Syvares TP-2040 Dertopene T-115 Dertopene T-160 Softening temperature (℃) 120 120 160 hydroxyl value 140-160 40 to 60 60 Glass transition temperature (℃) 71 66 105

αT-1 αT-2 βT manufacturing company DRT DRT DRT product name Piccolyte A-135 Piccolyte A-115 Piccolyte S-135 Softening temperature (℃) 135 115 135 Glass transition temperature (℃) 90 70 90

Table 1 is a summary of the peel strength of seven specimens prepared with different raw materials and composition ratios, and Table 2 shows the characteristics of the four styrene-butadiene-styrene copolymers (SBS) applied in Table 1. Table 3 summarizes the characteristics of the three terpene phenolic resins applied to Table 1, and Table 4 summarizes the characteristics of the polyterpene resins applied to Table 1.

In Table 4, 'αT' and 'βT' denote α-terpene and β-terpene, respectively, and Songnox 11B PW from Songwon Industries was applied as the antioxidant.

Specimens for measuring peel strength were prepared according to the following procedure.

1) Adhesive film manufacturing

After applying the prepared adhesive on the silicone release-treated PET film, it was completely dried while passing through a dry chamber (the temperature was increased from 60°C to 110°C sequentially) to obtain an adhesive film having a thickness of 60um.

2) Temporary Adhesive (Temporary Adhesive)

After removing the release PET film from one side of the adhesive film, it was attached to the prepared water-repellent fabric (Gore-Tex) and compressed with a heating press (temperature 90° C., pressure 0.5 MPa, time 5 seconds).

3) Adhesion

The PET film on the other side of the specimen prepared in 2) was removed, and the water-repellent fabric (Gore-Tex) was overlapped and compressed with a heating press (upper/lower temperature of 150° C., pressure of 0.5 MPa, time of 5 seconds).

4) cutting

It was cut into 15 mm in width and left at room temperature for 1 hour.

5) Peel strength test

It proceeded according to the standard of ASTM D3330, and the test speed was 100 mm/min.

Referring to Table 1, it can be seen that Examples 1 and 2 show a very high peel strength compared to the other examples.

As shown in Table 2, SBS-1 and SBS-2 applied at this time can confirm that the styrene-butadiene double block content is 78% and 70%, respectively, and it can be confirmed that the peel strength is better at SBS-2, which is 70%. have.

On the other hand, in Table 1, Examples 1 and 2 have different types of terpene phenol resins from Examples 5 and 6, Examples 1 and 2 to which TP-1 is applied are Example 5 to which Tp-2, 3 is applied, respectively It can be confirmed that the peel strength is superior to that of ,6. Referring to Table 3, it can be seen that the glass transition temperature of TP-1 is 71°C and the hydroxyl value is 140~160.

Next, in Table 1, Examples 1 and 2 and Example 7 have different types of polyterpene resin, but Example 1 in which αT-1 (α-terpene) and βT-1 (β-terpene) are applied together It can be seen that the ,2-valent αT-2 (α-terpene) shows superior peel strength compared to Example 7 in which it is applied alone. Referring to Table 4, αT-1 (α-terpene) and βT-1 (β -terpene) has a glass transition temperature of 90 °C.

Claims (9)

61 to 67 wt% of a styrene-butadiene-styrene copolymer, 15 to 19 wt% of a terpene phenol resin, 16 to 20 wt% of a polyterpene resin, and 0.8 to 1.2 wt% of an antioxidant;
The polyterpene resin is a thermally active adhesive tape for athleisure materials composed of two or more mono-terpenes. The method according to claim 1,
The styrene-butadiene-styrene copolymer is a thermally active adhesive tape for athleisure materials comprising 70 to 80% of a styrene-butadiene double block component. The method according to claim 1,
The polyterpene resin is a thermally active adhesive tape for athleisure materials composed of α-terpene and β-terpene. The method according to claim 1,
The polyterpene resin is a thermally active adhesive tape for athleisure materials composed of α-terpene and dipentene. 5. The method according to claim 3 or 4,
The polyterpene resin is a thermally active adhesive tape for athleisure materials having an α-terpene content of 77 to 82%. The method according to claim 1,
The glass transition temperature of the terpene phenol resin is 70 ~ 72 ℃ thermally active adhesive tape for athleisure materials. The method according to claim 1,
The glass transition temperature of the polyterpene resin is 90 ~ 95 ℃ thermally active adhesive tape for athleisure materials. The method according to claim 1,
The hydroxyl value of the terpene phenol resin is 140-160 thermally active adhesive tape for athleisure materials. The method according to claim 1,
The content of the styrene-butadiene-styrene copolymer is 64wt%,
The content of the terpene phenol resin is 17wt%,
The content of the polyterpene resin is 18wt%,
The content of the antioxidant is 1 wt%,
The polyterpene resin is a thermally active adhesive tape for athleisure material consisting of 14wt% of α-terpene and 4wt% of β-terpene.