WO2016153246A1 - Adhesive sheet embossed with rhombuses having different aspect ratios - Google Patents

Adhesive sheet embossed with rhombuses having different aspect ratios Download PDF

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Publication number
WO2016153246A1
WO2016153246A1 PCT/KR2016/002835 KR2016002835W WO2016153246A1 WO 2016153246 A1 WO2016153246 A1 WO 2016153246A1 KR 2016002835 W KR2016002835 W KR 2016002835W WO 2016153246 A1 WO2016153246 A1 WO 2016153246A1
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Prior art keywords
embossing
adhesive
film
adhesive sheet
rhombus
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PCT/KR2016/002835
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French (fr)
Korean (ko)
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강태욱
시카타켄지
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주식회사 한국후지야마산업
강태욱
시카타켄지
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Publication of WO2016153246A1 publication Critical patent/WO2016153246A1/en

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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

Definitions

  • the present invention relates to a pressure-sensitive adhesive sheet having a rhombus embossing having a different aspect ratio, and more particularly, a release film in which rhombus shapes consisting of squares having four sides having the same length and two diagonal lengths are arranged regularly, and the release film
  • a pressure-sensitive adhesive sheet composed of a pressure-sensitive adhesive film laminated on the substrate to reduce the longitudinal and horizontal elongation variation of the pressure-sensitive adhesive sheet, when the adhesive film is attached to an adherend such as metal or glass, bubbles can be smoothed to reduce the collection phenomenon.
  • the present invention relates to an adhesive sheet having a rhombus embossing having a different aspect ratio.
  • the adhesive sheet used for the exterior is attached to various materials having a metal, glass, plastic sheet, painted surface or a flat surface and is used for the purpose of making the appearance beautiful or preventing the material from being damaged.
  • FIG. 1 One example of the configuration of such an adhesive sheet is composed of a surface treatment layer 1, a substrate layer 2, an adhesive layer 3, a release liner layer 4, and the like from above, as shown in FIG. 1.
  • the layer 2 may be subjected to various types of processing such as a printing layer (not shown) in addition to the surface treatment layer 1 of FIG. 1 to impart additional functions.
  • the release liner layer 4 is formed with various types of embossing protrusions to improve the bubble release function of the pressure-sensitive adhesive layer 3, and the protrusion shape applied to the release liner layer 4 is the pressure-sensitive adhesive layer 3 of the adhesive sheet. Is transferred to.
  • the pressure-sensitive adhesive layer 3 has an embossed pattern of grooves having a recessed shape.
  • the engraved embossed pattern formed on the pressure-sensitive adhesive layer 3 has a function of providing workability by providing bubble release property when attached to a flat surface.
  • the appearance quality problem which is often found, is often seen in the longitudinal direction, and may be shown in the shape of a length or as a fine stain phenomenon due to the difference in the lengthwise luster.
  • the pressure-sensitive adhesive coating micro-bubbles or bubbles are collected in the embossed protrusion of the release liner layer may appear in the coating direction.
  • This phenomenon tends to be more severe in appearance unevenness when the embossed release liner layer 4 is used for the bubble release treatment than when the flat non-bubble general release liner layer is used.
  • the appearance product may cause a deterioration in use in the appearance product, such as a problem that the appearance becomes uneven after the adhesive coating, drying, and the base plywood.
  • An object of the present invention is to provide a pressure-sensitive adhesive sheet that has been proposed to solve the above-described conventional problems and has improved the bubble omission phenomenon by reducing the vertical and horizontal elongation variation.
  • an object of the present invention is to reduce the bubble collection phenomenon in the embossed protrusions mainly collected in the longitudinal direction.
  • the pressure-sensitive adhesive sheet having a rhombic embossing having different aspect ratios proposed in the present invention is a release film in which rhombus-shaped lattice patterns formed by crossing four sides of the same length and protruding embossing are regularly arranged, and laminated on the release film. It consists of an adhesive film.
  • the four sides of the embossing to form the grid pattern has a predetermined height and a predetermined width, the upper end and both side portions are made of embossing having a predetermined radius of curvature, the longitudinal direction relative to the horizontal diagonal length of the rhombus shape It is preferable that the ratio of the diagonal length is larger than one.
  • the predetermined height of the embossing is 6 ⁇ 18 ⁇ m
  • the predetermined width is 10 ⁇ 100 ⁇ m
  • the predetermined radius of curvature is 1 ⁇ m ⁇ 50 ⁇ m
  • the area of the rhombus is 1089 ⁇ 6600 ⁇ m 2
  • the ratio of the diagonal length to the diagonal length in the longitudinal direction is designed to be proportional to the elongation in the transverse and longitudinal directions of the fabric. However, if necessary, the ratio of the diagonal length to the horizontal diagonal length of the rhombus shape is greater than one. You can also change the height, width, and length of the horizontal and vertical diagonals freely.
  • the variation in the longitudinal elongation of the adhesive sheet may be reduced to smooth out bubbles when the adhesive film is attached to a metal or glass, thereby reducing the collection phenomenon.
  • the shape of the embossed protrusion on the release film is rounded to have a predetermined radius of curvature so that the surface tension of the adhesive layer to which the shape is transferred is easily acted on.
  • 1 is an example of sectional drawing of a conventional adhesive sheet.
  • FIGS. 2A and 2B are examples of the appearance and cross-sectional views of the pressure-sensitive adhesive sheet of the present invention.
  • 3A and 3B are cross-sectional views of patterns in which a lattice pattern formed by intersecting protruding embossing on a release film has a shape of a rhombus.
  • Figure 4 is a view showing a projection cross-sectional view and the like of the projecting embossing to form a grid pattern according to the present invention.
  • 5 to 8 are various embodiments according to the aspect ratio of the diagonal length of the projecting embossing to form a grid pattern according to the present invention.
  • FIGS. 2A and 2B are examples of the appearance and cross-sectional views of the pressure-sensitive adhesive sheet of the present invention.
  • the pressure sensitive adhesive sheet of the present invention largely consists of an adhesive film and a release film.
  • the adhesive film is composed of a base layer and an adhesive layer laminated on the base layer
  • the release film is a structure in which the support layer and the molding layer are sequentially laminated on the slip prevention layer.
  • the release coating layer may be applied on top of the release film as needed.
  • a lattice pattern formed by intersecting intersecting embossing is molded into a rhombus shape, and thus, the adhesive layer of the pressure-sensitive adhesive film laminated to the shaping layer of the release film has a concave-convex shape corresponding thereto. Is formed.
  • polyolefins such as polyethylene and polypropylene
  • polyesters such as polyethylene terephthalate and polybutylene terephthalate
  • polyvinyl chloride such as polyethylene terephthalate and polybutylene terephthalate
  • polyvinyl chloride such as polyethylene terephthalate and polybutylene terephthalate
  • polystyrene polyurethane
  • polycarbonate such as poly
  • poly Amide polyimide, polymethyl methacrylate, polybutene, polybutadiene, polymethylpentene
  • ethylene vinyl acetate copolymer ethylene (meth) acrylic acid copolymer
  • ethylene (meth) acrylic acid ester copolymer such as ABS resin, ionomer resin Since a film, a foamed film, or a laminated film thereof, which are widely used in the industry or commercially available, may be used, further description thereof will be omitted.
  • a technical feature of the present invention is a bar which is an embossing protrusion constituting a gap pattern formed in a molded layer of a release film, which will be described in detail below.
  • 3A and 3B are cross-sectional views of patterns in which a lattice pattern formed by intersecting protruding embossing on a release film has a shape of a rhombus.
  • lattice patterns are regularly arranged in a rhombus shape in which four sides have the same length and two diagonal lines (the two diagonal lengths are different) cross each other at right angles. have.
  • the convex-convex protrusions having the intaglio shape corresponding thereto will be transferred to the adhesive layer of the adhesive film laminated with the release film.
  • the four sides constituting the illustrated embossing protrusion have a predetermined height and a predetermined width.
  • the ratio of the longitudinal diagonal length to the horizontal diagonal length of the embossing protrusion part which forms a grid pattern was made larger than one.
  • the height of the embossing to form a lattice pattern is 6 ⁇ 18 ⁇ m, the width is 10 ⁇ 100 ⁇ m but this is only one embodiment, depending on the design may be possible to change the size of the height and dimensions.
  • the ratio of the diagonal length in the horizontal direction and the diagonal length in the longitudinal direction is proportional to the elongation in the transverse direction and the longitudinal direction in the state of setting the area of the lattice pattern lattice pattern to 1089 to 6400 ⁇ m 2 .
  • the diagonal length in the horizontal direction and the diagonal length in the vertical direction may be partially changed as necessary in proportion to the height or width of the embossing.
  • the embossing forming the lattice pattern of the present invention described above has a ratio of the length of the horizontal diagonal to the length of the diagonal diagonal larger than 1, provided that the lengths of the four sides are the same.
  • the adhesive film is laminated on the release film, and the work of winding the roller with the roller is continuously performed. Therefore, a variation in longitudinal and horizontal elongation of the adhesive film occurs. For this reason, the adhesive film separated from the release film is separated from metal, glass, When attached to a plastic or the like, there is a difference in bubble release performance in the horizontal and vertical directions.
  • Figure 4 is a view showing a projection cross-sectional view and the like of the projecting embossing to form a grid pattern according to the present invention.
  • the upper and lower end portions of the embossing consisting of the projections forming a lattice pattern, both sides of the lower portion was rounded so as to have a predetermined curvature (curve radius of 1 ⁇ m ⁇ 50 ⁇ m).
  • the reason for providing such a shape is that when the adhesive film is negatively transferred to the adhesive film, when the adhesive film is pressurized to the adherend such as glass, plastic, or stainless steel, the surface tension of the adhesive layer can be increased to suppress the phenomenon of bubbles being collected. Because.
  • the reason for setting the radius of curvature of the embossing to 1 ⁇ m to 50 ⁇ m is to consider the height and width of the embossing.
  • Figures 5 to 8 show various embodiments according to the aspect ratio of the diagonal length of the embossing constituting the grid pattern according to the present invention
  • the ratio of the longitudinal length to the longitudinal length may be variously designed as 0.92: 1.08, 0.91: 1.09, 0.94: 1.06, 0.93: 1.07, and the like.
  • the preferred design ratios were 1: 1.17, 1: 1.2, 1: 1.13, 1: 1.15, etc., and thus the specific design range was more than about 1: 1 and 1.3 or less.
  • the ratio of the length in the longitudinal direction to the length in the horizontal direction is greater than about 1: 1 and 1.3 or less
  • the pressure-sensitive adhesive film is pushed in a predetermined direction to adhere to a glass surface or the like
  • the elongation of the transverse and vertical directions of the pressure-sensitive adhesive film is This is because it is possible to prevent the trapping of bubbles, which mostly occur along the longitudinal direction due to the deviation, in advance.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Adhesive Tapes (AREA)

Abstract

The present invention relates to an adhesive sheet embossed with rhombuses having different aspect ratios, the invention providing an adhesive sheet comprising: a release film having regularly arranged thereon rhombus shapes consisting of quadrilateral forms in which the lengths of the four sides are the same while the lengths of two diagonals, that intersect each other perpendicularly, are mutually different; and an adhesive film which is laminated onto the release film, wherein, by reducing deviation in the longitudinal and latitudinal elongation rates of the adhesive sheet, it is possible to ensure smooth air-bubble dissipation and so reduce the phenomenon of trapping when the adhesive film is attached to metal or glass or the like.

Description

종횡 비율이 상이한 마름모형 엠보싱을 갖는 점착 시트Adhesive sheet with rhombus embossing with different aspect ratios
본 발명은 종횡 비율이 상이한 마름모형 엠보싱을 갖는 점착 시트에 관한 것으로 보다 상세하게는 네 변의 길이가 같고 두 대각선의 길이가 서로 다른 사각형으로 이루어지는 마름모 형상이 규칙적으로 배열되는 이형 필름과, 상기 이형 필름상에 적층된 점착 필름으로 이루어지는 점착 시트를 제공하여 점착 시트의 종횡 연신율 편차를 감소시킴으로써 점착 필름을 금속이나 유리 등과 같은 피착제에 부착하는 경우 기포 빠짐을 원활하게 하여 포집 현상을 감소시킬 수 있도록 한 종횡 비율이 상이한 마름모형 엠보싱을 갖는 점착 시트에 관한 것이다.The present invention relates to a pressure-sensitive adhesive sheet having a rhombus embossing having a different aspect ratio, and more particularly, a release film in which rhombus shapes consisting of squares having four sides having the same length and two diagonal lengths are arranged regularly, and the release film By providing a pressure-sensitive adhesive sheet composed of a pressure-sensitive adhesive film laminated on the substrate to reduce the longitudinal and horizontal elongation variation of the pressure-sensitive adhesive sheet, when the adhesive film is attached to an adherend such as metal or glass, bubbles can be smoothed to reduce the collection phenomenon. The present invention relates to an adhesive sheet having a rhombus embossing having a different aspect ratio.
일반적으로 외장용에 사용되는 점착 시트는 금속, 유리, 플라스틱 시트, 도장 면 또는 평탄한 면을 가지는 다양한 재질에 부착되어 외관을 미려하게 하거나 재질의 훼손을 방지하기 위한 목적으로 사용되고 있다.In general, the adhesive sheet used for the exterior is attached to various materials having a metal, glass, plastic sheet, painted surface or a flat surface and is used for the purpose of making the appearance beautiful or preventing the material from being damaged.
이러한 점착 시트의 구성의 일예는 도 1에서 볼 수 있는 것과 같이, 위로부터 표면처리층(1), 기재층(2), 점착제층(3) 및 이형라이너층(4) 등으로 구성되며, 기재층(2)에는 추가 기능을 부여하기 위해 도 1의 표면처리층(1)외에 인쇄층(미도시) 등 다양한 형태의 가공이 행해질 수 있다.One example of the configuration of such an adhesive sheet is composed of a surface treatment layer 1, a substrate layer 2, an adhesive layer 3, a release liner layer 4, and the like from above, as shown in FIG. 1. The layer 2 may be subjected to various types of processing such as a printing layer (not shown) in addition to the surface treatment layer 1 of FIG. 1 to impart additional functions.
통상 이형라이너층(4)에는 점착제층(3)의 기포 빠짐 기능을 개선하기 위하여 다양한 형태의 엠보싱 돌기가 형성되며, 이형라이너층(4)에 부여된 돌기 형상은 점착 시트의 점착제층(3)에 전사된다.In general, the release liner layer 4 is formed with various types of embossing protrusions to improve the bubble release function of the pressure-sensitive adhesive layer 3, and the protrusion shape applied to the release liner layer 4 is the pressure-sensitive adhesive layer 3 of the adhesive sheet. Is transferred to.
따라서, 이형라이너층(4)을 제거한 경우 점착제층(3)에는 음각 형상으로 홈이 파진 형태의 엠보 문양이 생성된다. Therefore, when the release liner layer 4 is removed, the pressure-sensitive adhesive layer 3 has an embossed pattern of grooves having a recessed shape.
점착제층(3)에 형성된 음각 형상의 엠보 문양은 평면에 부착시 기포 빠짐성을 부여하여 시공성을 좋게 하는 기능을 가진다. The engraved embossed pattern formed on the pressure-sensitive adhesive layer 3 has a function of providing workability by providing bubble release property when attached to a flat surface.
그런데, 기포 빠짐 기능을 부여한 이형라이너층(4)을 사용하여 점착 코팅, 건조 및 점착 합판한 경우 제품 외관에 균일하지 않은 면이 많이 나타난다. However, when the adhesive coating, drying, and adhesive plywood were used using the release liner layer 4 provided with the bubble release function, many uneven surfaces appeared in the product appearance.
주로 많이 나타나는 외관 품질 문제는 길이 방향으로 많이 나타나며, 길이 모양으로 나타나거나 길이 방향 광택 차이로 인한 미세 얼룩 현상으로 나타나기도 한다. 또한, 점착제 코팅시 마이크로 기포 혹은 기포가 이형 라이너층의 양각 형상 돌출부에 포집되어 코팅 방향으로 나타나기도 한다.The appearance quality problem, which is often found, is often seen in the longitudinal direction, and may be shown in the shape of a length or as a fine stain phenomenon due to the difference in the lengthwise luster. In addition, when the pressure-sensitive adhesive coating, micro-bubbles or bubbles are collected in the embossed protrusion of the release liner layer may appear in the coating direction.
이러한 현상은 기포 빠짐 처리되지 않은 평탄한 일반 이형라이너층을 사용한 경우보다 기포 빠짐 처리를 위해 엠보 처리된 이형라이너층(4)을 사용한 경우가 그 외관 불균일 현상이 더욱 심해지는 경향을 보이기도 한다.This phenomenon tends to be more severe in appearance unevenness when the embossed release liner layer 4 is used for the bubble release treatment than when the flat non-bubble general release liner layer is used.
특히 점착제 코팅, 건조 및 기재 합판 후 외관이 불균일해지는 문제가 발생하는 등 외관 제품으로 사용하는데 있어 품질 저하를 유발시킬 수 있다.In particular, it may cause a deterioration in use in the appearance product, such as a problem that the appearance becomes uneven after the adhesive coating, drying, and the base plywood.
또한, 점착 시트를 스퀴지로 가압하여 부착할 경우 길이 방향의 기재 연신율이 높은 관계로 기포 빠짐성이 저하되는 등 작업에 어려움이 있었다.In addition, when the pressure-sensitive adhesive sheet is attached by pressing with a squeegee, there is a difficulty in work such as the bubble omission property decreases due to the high elongation of the substrate in the longitudinal direction.
본 발명은 전술한 종래의 문제점을 해결하기 위하여 제안된 것으로 종횡 연신율 편차를 감소시켜 기포 빠짐 현상을 개선시킨 점착 시트를 제공하는 것을 목적으로 한다.An object of the present invention is to provide a pressure-sensitive adhesive sheet that has been proposed to solve the above-described conventional problems and has improved the bubble omission phenomenon by reducing the vertical and horizontal elongation variation.
또한, 이형 필름상에 점착 필름을 코팅하는 경우 주로 길이 방향으로 포집되어지는 양각 돌출부에서의 기포 포집 현상을 감소시키는 것을 목적으로 한다. In addition, when the adhesive film is coated on the release film, an object of the present invention is to reduce the bubble collection phenomenon in the embossed protrusions mainly collected in the longitudinal direction.
본 발명에서 제안하는 종횡 비율이 상이한 마름모형 엠보싱을 갖는 점착 시트는 네 변의 길이가 같고 돌출된 엠보싱이 교차하여 형성된 마름모 형상의 격자 패턴이 규칙적으로 배열되는 이형 필름과, 상기 이형 필름상에 적층된 점착 필름으로 이루어진다. The pressure-sensitive adhesive sheet having a rhombic embossing having different aspect ratios proposed in the present invention is a release film in which rhombus-shaped lattice patterns formed by crossing four sides of the same length and protruding embossing are regularly arranged, and laminated on the release film. It consists of an adhesive film.
본 발명에서, 상기 격자 패턴을 형성하는 엠보싱의 네 변은 소정 높이와 소정 폭을 가지며, 그 상단부와 양측면부는 소정의 곡률 반경을 갖는 엠보싱으로 이루어지고, 상기 마름모 형상의 가로 방향 대각선 길이 대비 세로 방향 대각선 길이의 비율은 1 보다 큰 것이 바람직하다.In the present invention, the four sides of the embossing to form the grid pattern has a predetermined height and a predetermined width, the upper end and both side portions are made of embossing having a predetermined radius of curvature, the longitudinal direction relative to the horizontal diagonal length of the rhombus shape It is preferable that the ratio of the diagonal length is larger than one.
본 발명에 있어서, 상기 엠보싱의 상기 소정 높이는 6~18㎛, 상기 소정 폭은 10~100㎛, 상기 소정 곡률 반경은 1㎛~50㎛, 마름모의 면적은 1089~64000㎛2 으로 하고, 가로방향의 대각선 길이와 세로방향의 대각선 길이의 비율을 원단의 가로방향과 세로방향의 연신율에 비례하는 것으로 설계하였으나, 필요에 따라서는 상기 마름모 형상의 가로 방향 대각선 길이 대비 세로 방향 대각선 길이의 비율은 1 보다 크게 한 상태에서 높이와 폭과 가로 및 세로 방향 대각선 길이를 자유롭게 변경할 수도 있다.In the present invention, the predetermined height of the embossing is 6 ~ 18㎛, the predetermined width is 10 ~ 100㎛, the predetermined radius of curvature is 1㎛ ~ 50㎛, the area of the rhombus is 1089 ~ 6600㎛ 2 , horizontal direction The ratio of the diagonal length to the diagonal length in the longitudinal direction is designed to be proportional to the elongation in the transverse and longitudinal directions of the fabric. However, if necessary, the ratio of the diagonal length to the horizontal diagonal length of the rhombus shape is greater than one. You can also change the height, width, and length of the horizontal and vertical diagonals freely.
본 발명에서 제안하는 종횡 비율이 상이한 마름모형 엠보싱을 갖는 점착 시트를 사용하는 경우 점착 시트의 종횡 연신율 편차를 감소시켜 점착 필름을 금속이나 유리 등에 부착하는 경우 기포 빠짐을 원활하게 하여 포집 현상을 감소시킬 수 있다.When using an adhesive sheet having a rhombus embossing having a different aspect ratio proposed in the present invention, the variation in the longitudinal elongation of the adhesive sheet may be reduced to smooth out bubbles when the adhesive film is attached to a metal or glass, thereby reducing the collection phenomenon. Can be.
또한, 엠보싱을 갖는 이형 필름상에 접착제 코팅시 이형 필름상의 양각 돌출부로 인해 포집되어지는 마이크로 기포 또는 기포 포집 현상을 감소시킬 수 있다.In addition, it is possible to reduce the micro-bubbles or bubble collection phenomenon that is collected due to the embossed protrusion on the release film when the adhesive coating on the release film having embossing.
또한, 본 발명에서는 점착 필름에 음각으로 전사된 엠보싱의 표면 장력을 효율적으로 이용하여 플라스틱, 유리, 스테인레스 스틸 등과 같은 피착제에 가압하여 부착시 기포 빠짐을 원활하도록 하였다. 이를 위해 본 발명에서는 이형 필름상의 양각 돌출부의 형상을 소정 곡률 반경을 갖도록 라운딩 처리하여 형상이 전사된 점착층의 표면장력이 용이하게 작용하도록 하였다. In addition, in the present invention, by effectively using the surface tension of the embossing transferred intaglio to the pressure-sensitive adhesive film to pressurize to an adhesive such as plastic, glass, stainless steel, etc. to smooth out bubbles when attached. To this end, in the present invention, the shape of the embossed protrusion on the release film is rounded to have a predetermined radius of curvature so that the surface tension of the adhesive layer to which the shape is transferred is easily acted on.
도 1은 종래 점착 시트의 단면도의 일예이다.1 is an example of sectional drawing of a conventional adhesive sheet.
도 2a 및 2b는 본 발명의 점착 시트의 외관 및 그 단면도의 일예이다.2A and 2B are examples of the appearance and cross-sectional views of the pressure-sensitive adhesive sheet of the present invention.
도 3a 및 3b는 이형 필름에 돌출 엠보싱이 교차하여 형성된 격자 패턴이 모름모 형상으로 이루어진 패턴과 그 단면도이다.3A and 3B are cross-sectional views of patterns in which a lattice pattern formed by intersecting protruding embossing on a release film has a shape of a rhombus.
도 4는 본 발명에 따른 격자 패턴을 형성하는 돌출 엠보싱의 돌기 형상 단면도 등을 보여주는 도면이다.Figure 4 is a view showing a projection cross-sectional view and the like of the projecting embossing to form a grid pattern according to the present invention.
도 5 내지 8은 본 발명에 따른 격자 패턴을 형성하는 돌출 엠보싱의 대각선 길이의 종횡 비율에 따른 다양한 실시예이다.5 to 8 are various embodiments according to the aspect ratio of the diagonal length of the projecting embossing to form a grid pattern according to the present invention.
본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정해서 해석되어서는 아니 되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다. The terms or words used in this specification and claims are not to be construed as limiting in their usual or dictionary meanings, and the inventors may appropriately define the concept of terms in order to best explain their invention in the best way possible. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that the present invention.
따라서, 본 명세서에 기재된 실시예와 도면에 도시된 구성은 본 발명의 가장 바람직한 일실시예에 불과할 뿐이고 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원시점에 있어서 이들을 대체할 수 있는 다양한 균등물과 변형예들이 있을 수 있음을 이해하여야 한다.Therefore, the embodiments described in the specification and the drawings shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.
이하, 첨부된 도면을 참조하여 본 발명에서 제안하는 종횡 비율이 다른 마름모형 엠보싱을 갖는 점착시트에 대하여 설명하기로 한다.Hereinafter, an adhesive sheet having a rhombus embossing having different aspect ratios proposed by the present invention will be described with reference to the accompanying drawings.
도 2a 및 2b는 본 발명의 점착 시트의 외관 및 그 단면도의 일예이다.2A and 2B are examples of the appearance and cross-sectional views of the pressure-sensitive adhesive sheet of the present invention.
도시된 바와 같이, 본 발명의 점착 시트는 크게 점착 필름과 이형 필름으로 이루어진다.As shown, the pressure sensitive adhesive sheet of the present invention largely consists of an adhesive film and a release film.
도면에서 알 수 있듯이, 점착 필름은 기재층과 기재층 상부에 적층된 점착층으로 이루어지고, 이형 필름은 슬립 방지층에 지지층 및 성형층이 순차적으로 적층되어 있는 구조이다. 참고로, 이형 코팅층은 필요에 따라 이형 필름 상부에 도포될 수 있다.As can be seen in the drawings, the adhesive film is composed of a base layer and an adhesive layer laminated on the base layer, the release film is a structure in which the support layer and the molding layer are sequentially laminated on the slip prevention layer. For reference, the release coating layer may be applied on top of the release film as needed.
본 발명에 있어서, 이형 필름의 성형층에는 돌출 엠보싱이 교차하여 교차하여 형성된 격자 패턴이 마름모 형상으로 성형되어 있고 따라서 이형 필름의 성형층에 합판되는 점착 필름의 점착층에는 이에 대응하는 형상의 요철이 형성된다.In the present invention, in the shaping layer of the release film, a lattice pattern formed by intersecting intersecting embossing is molded into a rhombus shape, and thus, the adhesive layer of the pressure-sensitive adhesive film laminated to the shaping layer of the release film has a concave-convex shape corresponding thereto. Is formed.
참고로, 본 발명의 점착 시트에 사용되는 재료로는 예컨대 폴리에틸렌, 폴리프로필렌 등의 폴리올레핀, 폴리에틸렌테레프탈레이트, 폴리부틸렌테레프탈레이트 등의 폴리에스테르, 폴리염화비닐, 폴리스틸렌, 폴리우레탄, 폴리카보네이트, 폴리아미드, 폴리이미드, 폴리메타크릴산메틸, 폴리부텐, 폴리부타디엔, 폴리메틸펜텐, 에틸렌초산비닐공중합체, 에틸렌(메트)아크릴산공중합체, 에틸렌(메트)아크릴산에스테르공중합체, ABS수지, 아이오노머수지로 이루어지는 필름, 발포 필름, 또는 그들의 적층 필름 등과 같이 업계에서 널리 사용하고 있거나 시판 중인 것을 사용할 수 있으므로 추가적인 설명은 생략하기로 한다.For reference, as a material used for the adhesive sheet of the present invention, for example, polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyvinyl chloride, polystyrene, polyurethane, polycarbonate, poly Amide, polyimide, polymethyl methacrylate, polybutene, polybutadiene, polymethylpentene, ethylene vinyl acetate copolymer, ethylene (meth) acrylic acid copolymer, ethylene (meth) acrylic acid ester copolymer, ABS resin, ionomer resin Since a film, a foamed film, or a laminated film thereof, which are widely used in the industry or commercially available, may be used, further description thereof will be omitted.
다음, 본 발명의 기술적 특징은 이형 필름의 성형층에 형성되는 격차 패턴을 구성하는 엠보싱인 돌기부에 있는 바 이하에서는 이에 대하여 보다 상세히 설명하기로 한다.Next, a technical feature of the present invention is a bar which is an embossing protrusion constituting a gap pattern formed in a molded layer of a release film, which will be described in detail below.
도 3a 및 3b는 이형 필름에 돌출 엠보싱이 교차하여 형성된 격자 패턴이 모름모 형상으로 이루어진 패턴과 그 단면도이다.3A and 3B are cross-sectional views of patterns in which a lattice pattern formed by intersecting protruding embossing on a release film has a shape of a rhombus.
도시된 바와 같이, 이형 필름 상부에 적층된 성형층에는 네 변의 길이가 같고 교차하는 두 대각선(두 대각선의 길이는 상이함)이 상호 직교하도록 교차하여 형성되는 격자 패턴이 마름모 형상으로 규칙적으로 배열되어 있다.As shown in the figure, in the forming layer laminated on the release film, lattice patterns are regularly arranged in a rhombus shape in which four sides have the same length and two diagonal lines (the two diagonal lengths are different) cross each other at right angles. have.
따라서, 이형 필름과 합판되는 점착 필름의 점착층에는 이에 대응하는 음각의 형상인 요철 돌기부가 전사되어 형성될 것이다. Therefore, the convex-convex protrusions having the intaglio shape corresponding thereto will be transferred to the adhesive layer of the adhesive film laminated with the release film.
도시된 엠보싱 돌기부를 구성하는 네 변은 소정 높이와 소정 폭을 가지고 있음을 알 수 있다.It can be seen that the four sides constituting the illustrated embossing protrusion have a predetermined height and a predetermined width.
본 발명에서는 점착 필름의 기포 빠짐 현상을 개선하기 위하여 격자 패턴을 형성하는 엠보싱 돌기부의 가로 방향 대각선 길이 대비 세로 방향 대각선 길이의 비율을 1 보다 크게 하였다.In this invention, in order to improve the bubble omission phenomenon of the adhesive film, the ratio of the longitudinal diagonal length to the horizontal diagonal length of the embossing protrusion part which forms a grid pattern was made larger than one.
이는 점착 필름의 길이 방향인 세로 방향의 연신율이 더 크다는 점에 착안한 것으로 가로 방향 대각선 길이 대비 세로 방향 대각선 길이의 비율을 1 보다 크게 함으로써 점착 필름을 유리, 플라스틱, 스테인레스 스틸 등과 같은 피착제에 점착하는 경우 길이 방향(세로 방향)을 따라 배출되는 공기의 이동을 원활하게 함으로써 기포의 발생을 줄일 수 있기 때문이다. This is focused on the fact that the elongation in the longitudinal direction, which is the longitudinal direction of the adhesive film, is larger, and the adhesive film is adhered to the adherend such as glass, plastic, or stainless steel by increasing the ratio of the diagonal length in the longitudinal direction to the horizontal length in the adhesive film. This is because the occurrence of bubbles can be reduced by smoothly moving the air discharged along the longitudinal direction (vertical direction).
본 발명의 경우 격자 패턴을 형성하는 엠보싱의 높이는 6~18㎛ 이고, 그 폭은 10~100㎛ 으로 하였으나 이는 일 실시예에 불과한 것으로 설계에 따라서는 높이와 치수의 사이즈 변경이 가능할 수 있다.In the present invention, the height of the embossing to form a lattice pattern is 6 ~ 18㎛, the width is 10 ~ 100㎛ but this is only one embodiment, depending on the design may be possible to change the size of the height and dimensions.
한편, 본 발명에서는 마름모 형상인 격자 패턴의 면적을 1089~64000㎛2 으로 설정한 상태에서 가로방향의 대각선 길이와 세로방향의 대각선 길이의 비율을 원단의 가로방향과 세로방향의 연신율에 비례하는 것으로 설계하였다.Meanwhile, in the present invention, the ratio of the diagonal length in the horizontal direction and the diagonal length in the longitudinal direction is proportional to the elongation in the transverse direction and the longitudinal direction in the state of setting the area of the lattice pattern lattice pattern to 1089 to 6400 μm 2 . Designed.
마찬가지로 엠보싱의 높이 또는 폭에 비례하여 가로 방향 대각선 길이와 세로 방향 대각선 길이는 필요에 따라 치수를 일부 변경할 수 있을 것이다.Similarly, the diagonal length in the horizontal direction and the diagonal length in the vertical direction may be partially changed as necessary in proportion to the height or width of the embossing.
전술한 본 발명의 격자 패턴을 형성하는 엠보싱은 네 변의 길이가 모두 동일하다는 전제하에 가로 방향 대각선 길이 대비 세로 방향 대각선 길이의 비율을 1 보다 크게 한 것으로, 그 이유는 다음과 같다.The embossing forming the lattice pattern of the present invention described above has a ratio of the length of the horizontal diagonal to the length of the diagonal diagonal larger than 1, provided that the lengths of the four sides are the same.
통상 점착 시트를 제작함에 있어서 이형 필름에 점착 필름을 합판하여 롤러로 감아 당기는 작업이 지속적으로 이루어지기 때문에 점착 필름의 종횡 연신율 편차가 발생하고 이러한 이유로 인하여 이형 필름으로부터 분리한 점착 필름을 금속, 유리, 플라스틱 등에 부착하여 미는 경우 가로 방향 및 세로 방향으로의 기포 빠짐 성능에 차이가 발생한다.In general, in the manufacture of the adhesive sheet, the adhesive film is laminated on the release film, and the work of winding the roller with the roller is continuously performed. Therefore, a variation in longitudinal and horizontal elongation of the adhesive film occurs. For this reason, the adhesive film separated from the release film is separated from metal, glass, When attached to a plastic or the like, there is a difference in bubble release performance in the horizontal and vertical directions.
특히, 세로 방향으로의 연신율이 가로 방향의 연신율보다 더 크기 때문에 이러한 영향을 무시하고 정사각형 패턴을 형성하는 경우 세로 방향을 따라 배출되는 공기의 일부가 외부로 빠져 나가지 못하고 포집되어 공기 얼룩이 생기는 경우가 발생한다.In particular, since the elongation in the longitudinal direction is larger than the elongation in the horizontal direction, when neglecting these effects and forming a square pattern, a part of the air discharged along the longitudinal direction may not be able to escape to the outside, and air stains may occur. do.
그러나, 본 발명에서와 같이 네 변의 길이가 모두 동일하고 가로 방향 대각선 길이 대비 세로 방향 대각선 길이의 비율을 1보다 크게 한 경우 점착 필름에 형성된 마름모 형상의 요철부(음각부)를 통하여 배출되는 공기의 배출 속도가 거의 균일하게 유지되어 점착 필름 부착시 기포 포집 현상이 현저하게 저감되는 효과를 얻을 수 있다. However, as in the present invention, when all four sides have the same length and the ratio of the length of the diagonal length to the length of the horizontal direction is greater than 1, the air discharged through the rhombus-shaped uneven portion (negative part) formed in the adhesive film It is possible to obtain an effect that the discharge rate is kept substantially uniform, and the bubble collection phenomenon is significantly reduced when the adhesive film is attached.
다음, 도 4는 본 발명에 따른 격자 패턴을 형성하는 돌출 엠보싱의 돌기 형상 단면도 등을 보여주는 도면이다.Next, Figure 4 is a view showing a projection cross-sectional view and the like of the projecting embossing to form a grid pattern according to the present invention.
도 4에서 알 수 있듯이, 격자 패턴을 형성하는 돌기부로 이루어진 엠보싱의 상단부와 하단부의 양측면부가 소정의 곡률(곡률반경은 1㎛~50㎛)을 갖도록 라운딩 처리하였다. As can be seen in Figure 4, the upper and lower end portions of the embossing consisting of the projections forming a lattice pattern, both sides of the lower portion was rounded so as to have a predetermined curvature (curve radius of 1㎛ ~ 50㎛).
이러한 형상을 제공한 이유는 점착 필름으로 음각으로 전사된 경우 점착 필름이 유리, 플라스틱, 스테인레스 스틸 등과 같은 피착체에 가압 부착시 점착층의 표면장력을 크게하여 기포가 포집되는 현상을 억제할 수 있기 때문이다. The reason for providing such a shape is that when the adhesive film is negatively transferred to the adhesive film, when the adhesive film is pressurized to the adherend such as glass, plastic, or stainless steel, the surface tension of the adhesive layer can be increased to suppress the phenomenon of bubbles being collected. Because.
즉, 격자 패턴을 형성하는 돌기부로 이루어진 엠보싱의 상단부 및 하단부의 양측면부를 소정 곡률 반경으로 라운딩 처리함으로써, 사각형 형상으로 각이 형성된 경우 종래의 엠보싱(도 1 참조)을 이용하여 점착하는 경우와 비교하여 그 점착 모서리 부분에서 발생할 수 있는 포집 현상의 제거가 상대적으로 용이하기 때문이다.That is, by rounding both sides of the upper end and the lower end of the embossing including the protrusions forming the lattice pattern with a predetermined radius of curvature, when the angle is formed in a rectangular shape, compared with the case of sticking using the conventional embossing (see FIG. 1). This is because it is relatively easy to remove the collection phenomenon that may occur at the adhesive edge portion.
참고로, 엠보싱의 곡률 반경을 1㎛~50㎛으로 한 이유는 엠보싱의 높이와 폭을 고려한 것이다.For reference, the reason for setting the radius of curvature of the embossing to 1 µm to 50 µm is to consider the height and width of the embossing.
다음, 도 5 내지 8은 본 발명에 따른 격자 패턴을 구성하는 엠보싱의 대각선 길이의 종횡 비율에 따른 다양한 실시예를 보여준다Next, Figures 5 to 8 show various embodiments according to the aspect ratio of the diagonal length of the embossing constituting the grid pattern according to the present invention
도시된 바와 같이, 가로 방향 길이 대비 세로 방향 길이의 비는 0.92 : 1.08, 0.91 : 1.09, 0.94 : 1.06, 0.93 : 1.07 등으로 다양하게 설계할 수 있다. 이를 달리 표현하면 바람직한 설계 비율은 1 : 1.17, 1 : 1.2, 1 : 1.13, 1 : 1.15 등이었으며, 따라서 그 구체적인 설계 범위는 대략 1 : 1 초과 1.3 이하였다.As shown, the ratio of the longitudinal length to the longitudinal length may be variously designed as 0.92: 1.08, 0.91: 1.09, 0.94: 1.06, 0.93: 1.07, and the like. In other words, the preferred design ratios were 1: 1.17, 1: 1.2, 1: 1.13, 1: 1.15, etc., and thus the specific design range was more than about 1: 1 and 1.3 or less.
본 발명에서 가로 방향 길이 대비 세로 방향 길이의 비를 대략 1 : 1 초과 1.3 이하로 한 경우, 점착 필름을 유리면 등에 부착시키기 위하여 가압하여 일정방향으로 밀었을 경우 점착 필름의 가로 및 세로 방향의 연신율의 편차로 인해 연신율이 높은 세로 방향을 따라 대부분 발생하는 기포의 포집현상을 사전에 방지할 수 있기 때문이다.In the present invention, when the ratio of the length in the longitudinal direction to the length in the horizontal direction is greater than about 1: 1 and 1.3 or less, when the pressure-sensitive adhesive film is pushed in a predetermined direction to adhere to a glass surface or the like, the elongation of the transverse and vertical directions of the pressure-sensitive adhesive film is This is because it is possible to prevent the trapping of bubbles, which mostly occur along the longitudinal direction due to the deviation, in advance.

Claims (1)

  1. 일정한 높이와 폭을 가진 돌출된 엠보싱이 교차하여 형성된 마름모 형상의 격자 패턴이 규칙적으로 배열되는 이형 필름과,A release film in which rhombus-shaped lattice patterns formed by intersections of projecting embossing having a constant height and width are arranged regularly;
    상기 이형 필름상에 적층된 점착 필름을 포함하며,It includes an adhesive film laminated on the release film,
    돌출된 상기 엠보싱의 높이는 6~18㎛이고, 폭은 10~100㎛이며,The height of the embossed protruding is 6-18㎛, the width is 10-100㎛,
    상기 마름모 형상의 상기 격자 패턴을 형성하는 엠보싱의 네변의 길이는 동일하고, The lengths of the four sides of the embossing forming the lattice pattern of the rhombus shape are the same,
    상기 마름모 형상의 상기 격자 패턴을 형성하는 상기 엠보싱의 가로 방향 대각선 길이 대비 세로 방향 대각선 길이의 비율은 1: 1 초과 1.3 이하이며, The ratio of the longitudinal diagonal length to the horizontal diagonal length of the embossing forming the rhombus-shaped lattice pattern is greater than 1: 1 and less than 1.3,
    상기 마름모 형상의 상기 격자 패턴의 면적은 1089~64000㎛2 이며,The area of the lattice pattern of the rhombus shape is 1089 ~ 6400 µm 2 ,
    상기 세로 방향은 상기 이형 필름에 상기 점착 필름을 합판하여 롤러로 감아 당기는 방향이고, 상기 가로 방향은 상기 세로 방향에 수직인 방향이며, The vertical direction is a direction in which the adhesive film is laminated on the release film and wound with a roller, and the horizontal direction is a direction perpendicular to the vertical direction,
    상기 격자 패턴을 형성하는 상기 엠보싱의 상단부와 하단부의 양 측면부는 1㎛~50㎛의 곡률 반경을 갖도록 라운딩 처리하여 상기 점착 필름이 피착제에 가압 부착시 점착층의 표면 장력을 크게 하여 기포의 포집 현상을 억제할 수 있도록 한 것을 특징으로 하는 종횡 비율이 상이한 마름모형 엠보싱을 갖는 점착 시트. Both side portions of the upper end and the lower end of the embossing forming the lattice pattern are rounded to have a radius of curvature of 1 μm to 50 μm to increase the surface tension of the adhesive layer when the pressure-sensitive adhesive film is adhered to the adhesive, thereby collecting bubbles. The adhesive sheet which has rhombus embossing with a different aspect ratio characterized by being able to suppress a phenomenon.
PCT/KR2016/002835 2015-03-24 2016-03-22 Adhesive sheet embossed with rhombuses having different aspect ratios WO2016153246A1 (en)

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