JP2007224101A - Anti-slipping hot melt composition and carpet and floor material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anti-slipping hot melt composition which has auto adhesiveness and surface tackiness but can be removed, and to provide a carpet, a floor material, and the like, which each can be produced by coating the back side of the material with the hot melt composition. <P>SOLUTION: The anti-slipping adhesive hot melt composition is characterized by comprising 100 pts.wt. of a styrenic block copolymerization elastomer (A), 200 to 600 pts.wt. of an oil (B), and 200 to 300 pts.wt. of a tackifying resin (C), and the carpet, the floor material, and the like each using the composition. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a non-slip hot melt composition that can be peeled off while having self-adhesiveness and surface tackiness, and a carpet, floor material, and the like that are manufactured by applying the hot melt composition to the back surface.

Conventionally, acrylic emulsion-based pressure-sensitive adhesives have been used as anti-slip members for carpets, floor materials, etc., which are self-adhesive and surface-tackable and can be removed again. However, these have the problem of the need for a drying step after coating and the odor. In addition, the conventional acrylic emulsion has a problem that a pressure-sensitive adhesive must be separately applied on site.

As an anti-slip agent for carpets and flooring, a hot melt composition comprising a copolymer comprising a styrene block and a hydrogenated polyolefin, a polystyrene block reinforcing resin, a plasticizer and / or an amorphous polyolefin is disclosed. This hot melt composition requires a reinforcing resin for the polystyrene block. For this reason, there exists a fault that the self-adhesion property of the composition itself and surface tackiness will be insufficient.
JP2001-19926

A composition comprising 100 parts by weight of a styrenic block copolymer elastomer, 10 to 200 parts by weight of polypropylene, and 5 to 150 parts by weight of mineral oil has been disclosed. Since this composition essentially requires polypropylene, there is a drawback that self-adhesion and surface tackiness become insufficient due to crystallization of the polypropylene part. In addition, it is described that as a disadvantage when the oil exceeds 150 parts by weight, the hardness of the composition is too low and the molded product is easily deformed by an external pressure.
JP-A-10-279747

The problems to be solved by the present invention are a hot-melt composition that is self-adhesive and surface-tackable but can be re-peeled, and weather resistance and thermal stability used for anti-slip processing of carpets, floor materials, etc. It is to provide an excellent hot melt composition. Another object of the present invention is to provide a floor material capable of simplifying on-site construction by previously applying a hot melt composition to the floor material. It is another object of the present invention to provide a floor material that can be re-peeled even between hot melt composition surfaces and has a self-adhesive property and a surface tack property that does not use a release paper.

As means for solving the above problems, 100 parts by weight of the styrene block copolymer elastomer (A), 200 to 600 parts by weight of the oil (B), and 200 to 300 parts by weight of the tackifier resin (C) are contained. It is suitable as a hot melt composition used for anti-slip members such as carpets and floor materials that are detachable while having self-adhesiveness and surface tackiness. .
In the present invention, the components (A), (B), and (C) are added in order that the shear strength with respect to the stainless steel plate at 23 ° C. and a load of 20 g / cm 2 is at least 10 N / 5 cm × 5 cm and re-peeling is possible. The composition used is preferred.
Furthermore, a more preferable anti-slip adhesive hot-melt composition is a composition containing 20 to 60 parts by weight of the olefin block copolymer elastomer (D) with respect to 100 parts by weight of the styrene block copolymer elastomer (A).

The present invention provides an anti-slip hot-melt composition that is self-adhesive and surface-tackable and can be peeled off again, and carpets, floor materials, and the like that are manufactured by applying the hot-melt composition to the back surface. be able to.

The styrene block copolymer elastomer (A) of the present invention is a styrene-ethylene-butylene block copolymer (SEBS) that is a hydrogenated product of a styrene-butadiene block copolymer (SBS) or SEBS and SBS, There are styrene-isoprene block copolymer (SIS), a mixture of two or more of SIS-ethylene-propylene block copolymer (SEPS), which is a hydrogenated product of SIS. SEBS has good adhesion to a support and adhesion to an adherend and good removability. ABA-type hydrogenated products such as SEBS and SEPS have better oil retention.

The present invention contains 100 parts by weight of the styrene block copolymer elastomer (A), 200 to 600 parts by weight of the oil (B), and 200 to 300 parts by weight of the tackifier resin (C) in the hot melt compounding. The anti-slip hot melt composition is characterized in that the cohesive force is insufficient when the styrenic block copolymer elastomer (A) is 100 parts by weight or less, and the viscosity becomes higher and the coating property is inferior above that.

Next, the oil (B) used in the present invention is, for example, paraffinic oil, naphthenic oil, aromatic oil or a mixture thereof and a hydrogenated product thereof. In the present invention, 200 to 600 parts by weight of the styrene block copolymer elastomer (A) is used with respect to 100 parts by weight. When the amount is less than 200 parts by weight, the adhesion to the re-peeling surface is increased and the re-peelability is deteriorated.

Next, the tackifier resin (C) used in the present invention is, for example, rosin, terpene, aliphatic, aromatic, alicyclic, or a mixture thereof. The softening point of the tackifier is preferably 90 to 150 ° C. If it is less than 90 ° C., it lacks heat resistance and blocking properties, and if it is 150 ° C. or more, the coatability becomes poor. Furthermore, it is preferable to mix in consideration of adhesion to the adherend to be used. In the present invention, the styrene block copolymer elastomer (A) is used in an amount of 200 to 300 parts by weight of the tackifier resin (C) with respect to 100 parts by weight. If it is less than 200 parts by weight, the adhesion to the support is insufficient, and if it exceeds 300 parts by weight, the flexibility as a slip stopper is insufficient. Further, the adhesiveness is increased and the removability is deteriorated.

In the present invention, components (A), (B), and (C) were used in order that the breaking strength against a stainless steel plate at 23 ° C. and a load of 20 g / cm 2 is at least 10 N / 5 cm × 5 cm and re-peeling is possible. A composition is preferred.

A more preferred non-slip adhesive hot melt composition is a composition containing 20 to 60 parts by weight of the olefin block copolymer elastomer (D) with respect to 100 parts by weight of the styrene block copolymer elastomer (A). The olefin-based block copolymer elastomer (D) of the present invention is an olefin-ethylene-butylene block copolymer elastomer (CEBC), a styrene-ethylene-butylene-olefin block copolymer elastomer (SEBC) alone or in combination of two or more. It is a mixture. If the olefin block copolymer elastomer (D) is less than 20 parts by weight, the effect of improving the oil retention cannot be obtained, and if it exceeds 60 parts by weight, the cohesive force is lowered.

  In the present invention, the hot-melt composition may optionally include a lubricant such as stearamide, an anti-blocking agent such as calcium stearate, a filler such as calcium carbonate, and an antioxidant such as hindered phenol. An agent or the like may be added as appropriate.

The hot melt composition of the present invention is prepared in a melt dissolution tank such as a heating type melt stirring tank, preferably in a vacuum, under a nitrogen stream, at a normal temperature of 150 ° C. to 250 ° C. Are sequentially melt-mixed, a kneader twin-rotary blade is used to melt and mix under heating, and a single- or twin-screw extruder is used for melt mixing.

  The method for producing a carpet or floor material using the hot melt composition in the present invention can be obtained by coating the hot melt composition melted on the back surface of the carpet or floor material with a hot melt coater.

  There are no particular restrictions on the carpet and floor material used in the present invention. It can be anything that is generally on the market. However, when soft vinyl chloride is used for the carpet and floor material used, a layer for blocking a plasticizer such as a PET film may be provided. Further, when the hot melt composition cannot obtain sufficient adhesive strength on the back surface of the carpet or floor material, a fibrous layer such as a polyester nonwoven fabric may be provided in order to obtain mechanical adhesive strength.

First, the evaluation method of the Example of this invention and a comparative example is described.
Description of evaluation method (a) Evaluation method of anti-slip effect As a method of confirming the anti-slip effect, shear strength was measured. Tile carpet (Tori Co., Ltd. GA type) with a primer treatment on one side, polyethylene film laminated on the other side, and a polyester spunbond nonwoven fabric bonded to each other. Use a iron to adhere to the vinyl chloride backing layer of the tile carpet. Then, the hot melt composition is processed at 50 g / m 2 on the polyester spunbond nonwoven fabric side with a roll coater (coating temperature 180 ° C.). This hot melt composition surface and a stainless steel plate are overlapped and pressure-bonded by two reciprocations of a 2 kg roller to obtain a test piece. The shear adhesive strength was measured at a tensile rate of 100 mm / min in the horizontal and horizontal directions at 23 ° C. and a load of 20 g / cm 2. The unit is N / 5cm × 5cm.

(B) Evaluation method for removability The following evaluation was performed as confirmation of removability. Tile carpet (Tori Co., Ltd. GA type) with a primer treatment on one side, polyethylene film laminated on the other side, and a polyester spunbond nonwoven fabric bonded to each other. Use a iron to adhere to the vinyl chloride backing layer of the tile carpet. Then, the hot melt composition is processed at 50 g / m 2 on the polyester spunbond nonwoven fabric side with a roll coater (coating temperature 180 ° C.). This hot-melt composition surface and a stainless steel plate are overlapped, and the sample left at 60 ° C., 40 g / cm 2 load for 1 week is allowed to stand at 23 ° C., no load for 12 hours or more to obtain a test piece. When this was peeled by hand, the adhesive residue state was observed. The evaluation results were evaluated as ○ for interfacial peeling between the hot melt and the stainless steel plate, and x for cohesive failure of the hot melt. A partial cohesive failure is indicated by Δ.

C. Evaluation method of self-adhesion The following evaluation was performed to confirm self-adhesion. Tile carpet (Tori Co., Ltd. GA type) with a primer treatment on one side, polyethylene film laminated on the other side, and a polyester spunbond nonwoven fabric bonded to each other. Use a iron to adhere to the vinyl chloride backing layer of the tile carpet. Then, the hot melt composition is processed at 50 g / m 2 on the polyester spunbond nonwoven fabric side with a roll coater (coating temperature 180 ° C.). The surfaces of the hot melt compositions are overlapped and left at 60 ° C., 40 g / cm 2 load for 1 week, and allowed to stand at 23 ° C., no load for 12 hours or more to obtain a test piece. The peel adhesive strength of this was measured at a tensile speed of 100 mm / min. The unit is N / 5cm.

Examples Hereinafter, the present invention will be described in more detail with reference to examples and comparative examples, but the present invention is not limited thereto.
Examples 1-4, Comparative Examples 1-6
Styrene-ethylene-butylene block copolymer (SEBS) A product number: Kraton G-1726 (styrene content: 30%, MFR: 65 g / 10 min (200 ° C., 5 kg)) manufactured by Kraton Polymer Co., styrene-ethylene-butylene block copolymer Polymer (SEBS) B Product number: Kraton G-1654 (styrene content: 31%), olefin-ethylene-butylene block copolymer elastomer (CEBC) A manufactured by Kraton Polymer Co. Product number: Septon 6200P (MFR: 2. 5 g / 10 min (230 ° C., 2.16 kg)), paraffinic oil A Part number: Process oil PW-90 (specific gravity: 0.870) manufactured by Idemitsu Kosan Co., Ltd. Tackifying resin (TF) A Part number: Clearon P manufactured by Yashara Chemical Co., Ltd. -125 (hydrogenated terpene resin), tackified tree (TF) B number: Yasuhara Chemical Co. POLYSTAR U-130 (the terpene phenol resin) with the formulation shown in Table 1, to obtain approximately 60 minutes heated mixed formulation at 180 ° C. using a Rabonida. Each evaluation was performed using this formulation, and the results are shown in Table 2.

The present invention relates to a hot-melt composition that is self-adhesive and surface-tackable and can be re-peeled, and a hot-melt composition that is excellent in weather resistance and thermal stability used for anti-slip processing of carpets, floor materials, etc. Is to provide. Another object of the present invention is to provide a floor material capable of simplifying on-site construction by previously applying a hot melt composition to the floor material. It is another object of the present invention to provide a floor material that can be re-peeled even between hot melt composition surfaces and has a self-adhesive property and a surface tack property that does not use a release paper.

Claims (4)

In hot-melt blending, 100 parts by weight of styrene block copolymer elastomer (A), 200 to 600 parts by weight of oil (B), and 200 to 300 parts by weight of tackifying resin (C) are characterized. An anti-slip adhesive hot melt composition. 2. The anti-slip adhesive hot melt composition according to claim 1, wherein the shear strength against a stainless steel plate at 23 [deg.] C. and a load of 20 g / cm <2> is at least 10 N / 5 cm * 5 cm and is removable. The hot-melt compounding contains 20 to 60 parts by weight of the olefin block copolymer elastomer (D) with respect to 100 parts by weight of the styrene block copolymer elastomer (A). Non-slip adhesive hot melt composition. A carpet and floor material produced by applying the hot melt composition according to any one of claims 1 to 3 to the back surface of the carpet and floor material.