KR20080093755A - Method for manufacturing pressure sensitive adhesion sheet having re-positionable property - Google Patents
Method for manufacturing pressure sensitive adhesion sheet having re-positionable property Download PDFInfo
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- KR20080093755A KR20080093755A KR1020070037932A KR20070037932A KR20080093755A KR 20080093755 A KR20080093755 A KR 20080093755A KR 1020070037932 A KR1020070037932 A KR 1020070037932A KR 20070037932 A KR20070037932 A KR 20070037932A KR 20080093755 A KR20080093755 A KR 20080093755A
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- bead
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Adhesive Tapes (AREA)
Abstract
Description
본 발명은 점착시트의 제조방법에 관한 것으로, 보다 구체적으로는 비드(미소구)가 포함된 점착제를 이형지에 코팅한 후, 상기 코팅체를 베이스 시트에 전사시킴으로써, 비드(미소구)를 배열하는 공정이 생략되어 생산성이 향상되고, 탈부착이 용이하며, 시공 후에는 높은 접착력을 유지할 수 있는 점착시트의 제조방법에 관한 것이다.The present invention relates to a method for producing a pressure-sensitive adhesive sheet, and more specifically, after coating a pressure-sensitive adhesive containing beads (microspheres) on a release paper, transferring the coating to the base sheet to arrange beads (microspheres). Since the process is omitted, the productivity is improved, the attachment and detachment is easy, and a method for manufacturing the pressure-sensitive adhesive sheet capable of maintaining high adhesive strength after construction.
점착시트는 유리, 사무, 인테리어, 건설, 광고, 또는 장식 등의 용도로 물체의 면에 부착하여 물건의 보호 및 장식의 목적으로 사용되고 있다. 또한 대부분의 반사지, 광고용 필름 또는 인테리어용 필름에는 제품의 용도상 이면에 점착제 처리를 한 후 이형지로 점착제 면을 보호하기도 한다.The adhesive sheet is used for the protection and decoration of objects by attaching to the surface of the object for the purpose of glass, office, interior, construction, advertising or decoration. In addition, most reflective paper, advertising film or interior film is used to protect the adhesive surface with a release paper after the adhesive treatment on the back surface for the purpose of the product.
일반적으로, 점착시트는 압연이나 캐스팅을 통해 베이스 시트(base sheet)를 생산한 후, 이형지 위에 점착제를 코팅하고, 점착제가 코팅된 면과 베이스 시트를 합지하여 제조되고 있다. 이형지는 시공 시 점착제로부터 박리가 쉽게 하기 위해 실리콘의 이형체를 처리하여 사용한다. 그리고 점착력의 균일성을 위해 점착제가 코팅되는 이형지면의 평활도는 뛰어나도록 만든다. 그러나, 상기 방법의 경우 피착물에 부착 시 높은 평활도로 인하여 재위치 선정성이 낮아지게 되는 문제점이 있었다. 이에 따라, 재위치 선정성을 높이기 위해 비드(미소구)를 사용하는 기술이 시도되었다.In general, the pressure-sensitive adhesive sheet is produced by rolling or casting a base sheet (base sheet), and then coating the pressure-sensitive adhesive on a release paper, laminating the adhesive-coated surface and the base sheet. Release paper is used by treating a release body of silicone in order to easily peel off from the adhesive during construction. And the uniformity of the release surface on which the pressure-sensitive adhesive is coated for uniformity of adhesive force is made to be excellent. However, the method has a problem that the repositionability is lowered due to the high smoothness when attached to the adherend. Accordingly, a technique of using beads (microspheres) has been attempted to increase repositionability.
구체적으로, 종래 점착시트를 제조함에 있어는 재위치 선정성을 높이기 위해, 이형지에 점착제를 코팅한 후, 상기 점착제 상에 재위치 선정성을 높이기 위한 비드를 배열한 다음, 베이스 시트에 합지시킨 후, 이형지를 제거하여 제조되고 있다.Specifically, in manufacturing a conventional adhesive sheet, in order to increase the repositionability, after coating the adhesive on the release paper, the beads for increasing the repositionability on the adhesive is arranged, then laminated on the base sheet, the release paper It is manufactured by removing.
그러나 위와 같은 종래의 방법은 비드를 배열하는 공정이 수반되고, 이와 함께 균일한 배열을 도모하기가 난해하여 생산성이 떨어지고, 또한 탈부착이 용이하지 못하는 문제점이 있다. 구체적으로, 비드가 베이스 시트 쪽으로 돌출되어 있기 때문에, 합지과정에서 이형지와의 접착된 면과 베이스 시트와의 접착된 면 중에서 이형지와 접착된 면 쪽이 접착력이 더 강하여 이형지와의 탈착(분리)이 용이하지 못하고, 베이스 시트와는 부착력이 떨어지는 문제점이 있다.However, the conventional method as described above involves a process of arranging beads, and it is difficult to attain a uniform arrangement with this, which leads to a problem in that productivity is low and desorption is not easy. Specifically, since the beads protrude toward the base sheet, the bonding surface between the release paper and the base sheet bonded to the release sheet is stronger in the lamination process, so that the detachment (separation) from the release paper is stronger. It is not easy and there is a problem in that the adhesive strength is inferior to the base sheet.
본 발명은 상기와 같은 종래 기술의 문제점을 해결하기 위하여 발명한 것으로서, 점착제에 비드를 포함(혼합)시킨 후, 점착제를 코팅함으로써, 비드의 배열공정이 생략되어 생산성이 향상되고, 점착제 코팅만으로 재위치 선정성을 가지며, 이형지와의 탈착 및 베이스 시트와의 부착력이 우수한 점착시트의 제조방법을 제공하는 데에 그 목적이 있다.The present invention has been invented to solve the problems of the prior art as described above, by including (mixing) the beads in the pressure-sensitive adhesive, and then coating the pressure-sensitive adhesive, the alignment process of the beads is omitted, productivity is improved, and only the pressure-sensitive adhesive coating It is an object of the present invention to provide a method for producing a pressure-sensitive adhesive sheet having positionality and excellent adhesion to a release sheet and adhesion to a base sheet.
상기 목적을 달성하기 위하여 본 발명은, 점착제에 비드(bead)를 혼합하여 점착제에 비드를 포함시키는 단계와; 비드가 포함된 점착제를 이형지에 코팅하는 단계와; 상기 코팅체를 베이스 시트에 전사시키는 단계;를 포함하는 점착시트의 제조방법을 제공한다.In order to achieve the above object, the present invention comprises the steps of including a bead (bead) to the pressure-sensitive adhesive; Coating a pressure-sensitive adhesive containing beads on a release paper; It provides a method for producing a pressure-sensitive adhesive sheet comprising a; transferring the coating to the base sheet.
이때, 상기 비드는 점착제 100중량부에 대하여 5 ~ 20 중량부로 포함된 것이 바람직하며, 또한 상기 비드의 입도 크기는 10㎛ ~ 25㎛인 것이 바람직하다.At this time, the beads are preferably contained in 5 to 20 parts by weight based on 100 parts by weight of the pressure-sensitive adhesive, and the particle size of the beads is preferably 10㎛ ~ 25㎛.
이하, 본 발명을 보다 상세히 설명한다.Hereinafter, the present invention will be described in more detail.
본 발명에 따라서, 점착제는 비드를 포함(비드와의 혼합)한 상태로 이형지 상에 코팅된다. 구체적으로, 점착시트는 이형지 상에 점착제를 코팅하고, 점착제가 코팅된 면과 베이스 시트를 합지하여 제조되어지되, 상기 점착제는 비드와 혼합된 상태에서 이형지 상에 코팅된다.According to the present invention, the pressure-sensitive adhesive is coated on a release paper with beads (mixed with beads). Specifically, the pressure-sensitive adhesive sheet is prepared by coating the pressure-sensitive adhesive on a release paper, and laminating the surface coated with the pressure-sensitive adhesive and the base sheet, the pressure-sensitive adhesive is coated on the release paper in a mixed state with the beads.
본 발명에 따르면, 비드가 점착제에 포함된 상태로 이형지 상에 코팅되어, 종래와 같은 비드 배열공정이 배제되어 생산성이 향상된다. 그리고 점착제에는 비드가 포함되어 있음에 따라 점착제 코팅만으로 재위치 선정성을 갖게 할 수 있다. 또한, 비드를 점착제 내부에 균일하게 분산, 배열할 수 있으며, 이형지와 맞닿는 면은 평활도가 줄어들어 이형지와 탈착이 용이하고(박리력 향상), 베이스 시트와의 부착력(점착력)은 우수해진다. 아울러, 재위치 선정성이 우수하고, 피착물에 시공 후에는 비드가 점착제 내부로 밀려들어 감으로써 장기 점착력이 높다. 구체적으로, 시공을 위해 이형지를 벗겨 내면 점착제 표면에 비드가 위치하여 요철을 부여 함에 따라 재위치 선정성을 향상시키고, 시공 과정에서는 비드가 상온에서 점착제보다는 경질(Hard)임으로 인하여 시공을 위해 압력을 가할 때 점착제 속으로 밀려 들어가 피착면과의 점착력은 높아진다. According to the present invention, the beads are coated on the release paper in a state contained in the pressure-sensitive adhesive, thereby eliminating the bead arrangement process as in the prior art to improve productivity. And since the adhesive contains the beads can be repositionable only by the adhesive coating. In addition, the beads can be uniformly dispersed and arranged in the pressure-sensitive adhesive, and the surface contacting the release paper is reduced in smoothness, so that the release paper is easily detached from the release paper (improving peeling force), and the adhesion to the base sheet (adhesive force) is excellent. Moreover, it is excellent in repositioning property, and long-term adhesive force is high because a bead pushes in an adhesive after construction to a to-be-adhered body. Specifically, peeling off the release paper for construction improves repositionability as beads are placed on the surface of the adhesive to impart unevenness, and in the construction process, pressure is applied to the construction because the beads are hard rather than adhesive at room temperature. When it is pushed into the adhesive, the adhesive force with the adherend surface becomes high.
상기 베이스 시트는 압연이나 캐스팅을 통해 제조된 통상의 것을 사용할 수 있으며, 예를 들어 폴리염화비닐(PVC)계, 폴리에스테르(PET)계 또는 폴리프로필렌(PP)계 중에서 선택된 하나 또는 둘 이상을 혼합한 것으로부터 제조된 것을 사용할 수 있다.The base sheet may be a conventional one manufactured by rolling or casting, and for example, one or two or more selected from polyvinyl chloride (PVC), polyester (PET), or polypropylene (PP) systems may be mixed. What was manufactured from what was used can be used.
상기 점착제는 통상적으로 사용되고 있는 아크릴계, 고무계, 우레탄계, 에폭시계, 실리콘계 등을 사용할 수 있으며, 이는 열경화형 및 광경화형을 포함한다.The pressure-sensitive adhesive may be commonly used acrylic, rubber, urethane, epoxy, silicone, and the like, which includes thermosetting and photocuring.
상기 비드는 폴리프로필렌, 폴리에틸렌, 폴리염화비닐, 아크릴 등의 고분자로부터 성형된 성형체로서, 구형, 타원형 등의 형상을 가질 수 있으며, 이는 속이 빈 중공구(hollow spherical)를 포함한다. 이러한 비드는 목적하는 점착제층의 두께보다 작은 입도 크기를 가지는 것을 사용하며, 바람직하게는 구형으로서 10㎛ ~ 25㎛의 입도 크기(직경)를 가지는 미소구가 좋다. 이때, 입도 크기가 너무 크면 점착력이 떨어질 수 있으며, 입도 크기가 너무 작으면 재위치 선정성이 떨어질 수 있다.The bead is a molded article formed from a polymer such as polypropylene, polyethylene, polyvinyl chloride, acrylic, etc., and may have a spherical shape, an elliptical shape, and the like, and includes hollow hollow spheres. Such beads are those having a particle size smaller than the thickness of the desired pressure-sensitive adhesive layer, preferably microspheres having a particle size (diameter) of 10 μm to 25 μm as a spherical shape. In this case, if the size of the particle size is too large, the adhesive force may fall, and if the size of the particle size is too small, repositionability may be reduced.
또한, 상기 비드는 점착제, 예를 들어 아크릴계 점착제와 균일하게 잘 섞일 수 있도록, 밀도는 1.5 g/㎤ ~ 3.0 g/㎤을 가지며, 아크릴수지로 성형된 미소구가 바람직하다. 아울러, 상기 비드는 점착제 100중량부에 대하여 5 ~ 20 중량부로 포함된 것이 바람직하다. 이때, 비드가 5중량부 미만으로서 함량이 너무 낮으면 재 위치 선정성이 떨어지며, 20중량부를 초과하여 함량이 너무 많으면 피착물과의 점착력이 떨어져 바람직하지 않다. In addition, the beads have a density of 1.5 g / cm 3 to 3.0 g / cm 3 so that the beads can be uniformly well mixed with the pressure-sensitive adhesive, for example, an acrylic pressure-sensitive adhesive, and microspheres molded of acrylic resin are preferable. In addition, the beads are preferably contained in 5 to 20 parts by weight based on 100 parts by weight of the pressure-sensitive adhesive. At this time, if the content is too low as the bead is less than 5 parts by weight, the repositioning property is inferior, and if the content is too much exceeding 20 parts by weight, the adhesion with the adherend is not preferable is not preferable.
상기 이형지는 점착제와의 탈리가 용이하도록 이형성을 가지는 것이면, 사용 가능하며, 예를 들어 종이나 필름 상에 실리콘 처리된 것을 사용할 수 있다.The release paper can be used as long as it has a release property so that detachment from the pressure-sensitive adhesive can be easily carried out. For example, a silicone-treated paper or film can be used.
이하, 본 발명의 실시예 및 비교예를 설명한다. 하기의 실시예 및 비교예는 본 발명에 대한 이해를 돕기 위해 제공되는 것일 뿐, 이에 의해 본 발명의 기술적 범위가 한정되는 것은 아니다.Hereinafter, examples and comparative examples of the present invention will be described. The following examples and comparative examples are provided only to assist in understanding the present invention, and the technical scope of the present invention is not limited thereto.
[실시예]EXAMPLE
통상의 아크릴계 열경화형 점착제 100 중량부에 대하여, 입도가 20㎛인 비드(미소구)를 5 중량부를 첨가하여 혼합하였다. 상기 비드가 포함된 점착제를 40㎛의 두께(건조 후의 두께)로 이형지 위에 코팅한 다음, 건조시킨 후, 베이스시트(PET 필름)에 전사시켰다.To 100 parts by weight of the normal acrylic thermosetting pressure-sensitive adhesive, 5 parts by weight of beads (microspheres) having a particle size of 20 µm were added and mixed. The bead-containing adhesive was coated on a release paper with a thickness of 40 μm (thickness after drying), then dried, and then transferred to a base sheet (PET film).
그리고 위와 같이 제조된 점착시트 시편에 대하여, 점착력(상온 20분 후, 상온 3일 후)과 Probe Tack을 측정하여 그 결과를 하기 [표 1]에 나타내었으며, 각 항목별 Test 방법은 아래와 같다.And for the pressure-sensitive adhesive sheet prepared as described above, by measuring the adhesive force (after 20 minutes at room temperature, after 3 days at room temperature) and Probe Tack and the results are shown in the following [Table 1], the test method for each item is as follows.
[실 시공성 평가][Workability Evaluation]
20 × 20㎝ 크기로 절단한 점착시트 시편을 준비하여 이를 아크릴판 위에 압력을 가하지 않은 상태로 놓은 후 시편의 위치 이동시 아크릴 판에 붙지 않고 이동 가능의 여부를 관찰하였다. 아크릴판과 붙지 않고 이동 가능시 "우수" 로 평가하고, 시편의 위치 이동시 추가의 힘이 발생할 경우를 "불량" 이라고 평가하였다. An adhesive sheet specimen cut to a size of 20 × 20 cm was prepared and placed thereon without applying pressure on the acrylic plate, and then the movement of the specimen without sticking to the acrylic plate was observed. It was evaluated as "good" when it was movable without sticking with an acrylic plate, and when "additional force" was generated when the specimen was moved.
[점착력 평가][Adhesion evaluation]
점착력 평가는 인장 시험기를 이용한 KS A1107의 Test 방법을 따랐으며, 피착면은 SUS 재질을 사용하였다. 이때 시편 부착 후 20분 후와 3일 후로 점착력을 평가하였다.Adhesion was evaluated according to the test method of KS A1107 using a tensile tester, and the surface to be adhered was made of SUS material. At this time, the adhesive strength was evaluated after 20 minutes and 3 days after the specimen attachment.
[초기 점착성(Tack) 평가][Initial Tack Evaluation]
초기 점착성 평가는 Probe Tack방법을 이용하였다. 구체적으로, 1인치 SUS 구를 800 g중의 하중으로 점착제 면에 0.5초간 접촉 후 접착제로부터 분리하는데 필요한 이동 거리에 대한 힘의 변화를 측정하였다. 이때, 측정된 최대의 힘을 Tack Force로 나타내고, 이동 거리에 대한 Tack Force에 접촉 면적을 나눈 값을 Tack Energy(= 이동 거리 x Tack Force / 접촉 면적)로 나타내었다.Initial adhesive evaluation was performed using the probe tack method. Specifically, the change in force with respect to the travel distance required to detach the adhesive from the adhesive after contacting the adhesive face for 0.5 seconds with a 1-inch SUS sphere at a load in 800 g was measured. At this time, the measured maximum force was expressed as a Tack Force, and the value obtained by dividing the contact area by the Tack Force with respect to the moving distance was expressed as Tack Energy (= moving distance x Tack Force / contact area).
[비교예 1]Comparative Example 1
비드(미소구)를 포함하지 않은 점착제를 사용한 것을 제외하고는 상기 실시예와 동일한 방법으로 점착시트를 제조한 후, 상기 실시예와 동일하게 물성을 측정하여 그 결과를 하기 [표 1]에 나타내었다.Except for using a pressure-sensitive adhesive that does not contain beads (microspheres) after the pressure-sensitive adhesive sheet was prepared in the same manner as in the above Example, the physical properties were measured in the same manner as in the above Example and the results are shown in the following [Table 1] It was.
[비교예 2]Comparative Example 2
종래와 같은 방법으로 비드(미소구)의 입도가 9㎛인 것을 점착제 상에 배열하는 방법으로 실시하였다. 구체적으로, 이형지 상에 아크릴계 열경화형 점착제를 코팅한 다음, 상기 점착제 위에 입도가 9㎛인 비드(미소구)를 배열하였으며, 다음으로 건조 후 베이스 시트(PET 필름)에 전사시켜 제조하였다. 이때, 비드(미소구)는 점착제 100 중량부에 대하여 5 중량부를 사용하였다. 이와 같이 제조된 본 비 교예의 시편에 대하여 상기 실시예와 동일한 방법으로 물성을 평가하였으며, 그 결과를 하기 [표 1]에 나타내었다.It carried out by the method of arranging on the adhesive that the particle size of a bead (microsphere) is 9 micrometers by the method similar to the past. Specifically, an acrylic thermosetting pressure-sensitive adhesive was coated on a release paper, beads (microspheres) having a particle size of 9 μm were arranged on the pressure-sensitive adhesive, and then dried and transferred to a base sheet (PET film). At this time, the beads (microspheres) were used 5 parts by weight based on 100 parts by weight of the pressure-sensitive adhesive. The physical properties of the specimens prepared as described above were evaluated in the same manner as in Example, and the results are shown in the following [Table 1].
[비교예 3]Comparative Example 3
비드(미소구)의 입도가 30㎛인 것을 제외하고는 상기 비교예 2와 동일한 방법으로 점착시트를 제조하여 물성을 평가하였으며, 그 결과를 하기 [표 1]에 나타내었다. Except that the particle size of the beads (microspheres) was 30㎛ to prepare a pressure-sensitive adhesive sheet in the same manner as in Comparative Example 2 to evaluate the physical properties, the results are shown in Table 1 below.
[비교예 4][Comparative Example 4]
비드(미소구)의 함량은 1.0 중량부, 입도 크기는 20㎛인 것을 제외하고는 상기 비교예 2와 동일한 방법으로 점착시트를 제조하여 물성을 평가하였으며, 그 결과를 하기 [표 1]에 나타내었다.The content of the beads (microspheres) was 1.0 parts by weight, except that the particle size was 20 ㎛ to prepare a pressure-sensitive adhesive sheet in the same manner as in Comparative Example 2 to evaluate the physical properties, the results are shown in the following [Table 1] It was.
상기 [표 1]에 나타난 바와 같이, 본 발명에 따른 실시예의 경우 우수한 점착력과 실시공성을 가짐과 동시에, 이형지와의 박리성을 나타내는 Probe Tack에 있어서 매우 우수한 결과를 가짐을 알 수 있다. 특히, 비교예 4와 대비되는 바와 같이, 비드(미소구)를 더 많은 량(동일한 입도 크기)을 사용함에도 불구하고 점착력, Probe Tack 등에 매우 우수한 결과를 가짐을 알 수 있다.As shown in [Table 1], in the case of the embodiment according to the present invention it can be seen that it has a very good results in the probe tack showing excellent adhesive strength and workability, at the same time peeling with the release paper. In particular, as compared with Comparative Example 4, it can be seen that even though using a larger amount (same particle size) of the beads (microspheres) has a very good results in adhesion, Probe Tack and the like.
또한, 상기 [표 1]에 나타난 바와 같이, 비드(미소구)의 입도 크기가 너무 작은 경우(비교예 2, 9㎛)에는 점착력은 우수하나 실시공성(재위치 선정성 등)이 떨어지며, 이와 반대로 비드(미소구)의 입도 크기가 너무 큰 경우(비교예 3, 30㎛)에는 실시공성(재위치 선정성 등)은 우수한 점착력이 현저히 떨어짐을 알 수 있었다.In addition, as shown in [Table 1], when the particle size of the beads (microspheres) is too small (Comparative Examples 2, 9 µm), the adhesion is excellent, but the implementation porosity (repositionability, etc.) is inferior, on the contrary When the size of the beads (microspheres) was too large (Comparative Examples 3, 30 µm), it was found that the excellent adhesive strength of the performance porosity (repositionability, etc.) remarkably decreased.
전술한 바와 같이, 본 발명은 비드가 점착제에 포함된 상태로 이형지 상에 코팅되어, 종래와 같은 비드 배열공정이 배제되어 생산성이 향상되는 효과를 갖는다. 그리고 점착제에는 비드가 포함되어 있음에 따라 점착제 코팅만으로 재위치 선정성을 갖게 할 수 있다. 또한, 비드를 점착제 내부에 균일하게 분산, 배열할 수 있으며, 이형지와 맞닿는 면은 평활도가 줄어들어 이형지와 탈착이 용이하고(박리력 향상), 베이스 시트와의 부착력(점착력)은 우수해지는 효과를 갖는다. 또한, 작은 압력으로도 비드가 점착제 속으로 밀려 들어가기 때문에 시공 후에는 더 높은 점착력을 유지하는 효과를 갖는다.As described above, the present invention is coated on a release paper in a state in which the beads are included in the pressure-sensitive adhesive, thereby eliminating the bead arrangement process as in the prior art has the effect of improving the productivity. And since the adhesive contains the beads can be repositionable only by the adhesive coating. In addition, the beads can be uniformly dispersed and arranged in the pressure-sensitive adhesive, the surface contacting the release paper is reduced in smoothness, so that it is easy to detach and release the release paper (improving peeling force), the adhesion to the base sheet (adhesive force) has an effect that is excellent. . In addition, the beads are pushed into the pressure-sensitive adhesive even at a small pressure has the effect of maintaining a higher adhesive force after construction.
Claims (3)
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020070037932A KR20080093755A (en) | 2007-04-18 | 2007-04-18 | Method for manufacturing pressure sensitive adhesion sheet having re-positionable property |
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| KR1020070037932A KR20080093755A (en) | 2007-04-18 | 2007-04-18 | Method for manufacturing pressure sensitive adhesion sheet having re-positionable property |
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