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KR-102962526-B1 - Bird Collision Preventing Laminate

KR102962526B1KR 102962526 B1KR102962526 B1KR 102962526B1KR-102962526-B1

Abstract

The present invention relates to a laminate for preventing bird collisions, and more specifically, to a laminate for preventing bird collisions characterized by comprising a first substrate layer, a plurality of collision prevention patterns formed at predetermined intervals on one side of the first substrate layer, and an adhesive layer formed on one side where the collision prevention patterns are formed, wherein a reflective pigment that reflects light in the ultraviolet region is incorporated into the collision prevention patterns, and wherein the reflective pigment comprises a plate-shaped first compound and a second compound surrounding the first compound, wherein the first compound is mica with a plate-shaped structure and the second compound is titanium oxide, so that the reflective pigment is coated such that the titanium oxide surrounds the mica with a plate-shaped structure, thereby maintaining transparency in the visible light region while reflecting wavelengths in the ultraviolet region that are recognized by birds, thereby achieving a bird collision prevention function without reducing aesthetics and visibility when viewed from a human perspective, and having minimal discoloration even when exposed to the atmosphere for a long time.

Inventors

  • 박예림
  • 이종혁
  • 김진호

Assignees

  • 주식회사 상보

Dates

Publication Date
20260512
Application Date
20230630

Claims (9)

  1. The apparatus comprises a first substrate layer, a plurality of collision prevention patterns coated at predetermined intervals on one side of the first substrate layer, an adhesive layer formed on the side where the collision prevention patterns are formed, and a top coating layer formed on the other side of the first substrate layer. Reflective pigments that reflect light in the ultraviolet wavelength range are incorporated into the above collision prevention pattern and arranged in random directions, and The first substrate layer is formed as a transparent substrate, and the top coating layer comprises a UV-curable resin and a UV-curable curing agent. The above reflective pigment comprises a plate-shaped first compound and a second compound surrounding the first compound and having a refractive index higher than that of the first compound, wherein The first compound is plate-shaped mica and the second compound is titanium oxide, so that the reflective pigment coats the plate-shaped mica so that the titanium oxide surrounds it, A laminate for preventing bird collisions, characterized by incorporating the above-mentioned reflective pigment in an amount of 6 to 10 parts by weight per 100 parts by weight of the above-mentioned collision prevention pattern.
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  6. In paragraph 1, A laminate for preventing bird collisions, characterized in that the first substrate layer is formed of PET.
  7. A laminate for preventing bird collisions according to claim 6, further comprising a second substrate layer disposed on one side of the adhesive layer, wherein the collision prevention pattern is disposed between the first substrate layer and the second substrate layer.
  8. A laminate for preventing bird collisions according to claim 6, further comprising a release film layer disposed on one side of the adhesive layer.
  9. In claim 6, the bird collision prevention laminate is characterized by having a reflectance of 20% to 40% in the wavelength range of 350 nm to 450 nm.

Description

Bird Collision Preventing Laminate The present invention relates to a laminate for preventing bird collisions, and more specifically, to a laminate for preventing bird collisions characterized by comprising a first substrate layer, a plurality of collision prevention patterns formed at predetermined intervals on one side of the first substrate layer, and an adhesive layer formed on one side where the collision prevention patterns are formed, wherein a reflective pigment that reflects light in the ultraviolet region is incorporated into the collision prevention patterns, and wherein the reflective pigment comprises a plate-shaped first compound and a second compound surrounding the first compound, wherein the first compound is mica with a plate-shaped structure and the second compound is titanium oxide, so that the reflective pigment is coated such that the titanium oxide surrounds the mica with a plate-shaped structure, thereby maintaining transparency in the visible light region while reflecting wavelengths in the ultraviolet region that are recognized by birds, thereby achieving a bird collision prevention function without reducing aesthetics and visibility when viewed from a human perspective, and having minimal discoloration even when exposed to the atmosphere for a long time. According to a survey by the Ministry of Environment and the National Institute of Ecology, bird collisions occurred at a total of 56 locations nationwide, including building windows and transparent sound barriers, from December 2017 to August 2018. An estimation of the total damage nationwide revealed that a significant number of birds are dying from collisions with transparent windows, leading to issues such as the disposal of carcasses alongside the bird deaths. Accordingly, the Ministry of Environment established measures to reduce bird collisions with transparent windows and implemented measures to mitigate the damage. So-called bird guards are attached or formed on transparent parts of artificial structures, such as transparent sound barriers on roads and railways, glass windows in buildings, and subway entrances, to prevent bird collisions. Methods used for bird guards include the print pattern method, which involves printing a specific shape onto glass using paints such as ceramics and then heat-treating it; UV-reflective pattern glass, in which a UV-reflective pattern is embedded on the surface so that it appears transparent to humans but is recognizable by birds; opaque and translucent glass, in which images, patterns, or text are engraved on the surface by utilizing the property of glass to corrode with hydrogen fluoride; and methods of attaching bird collision prevention tapes or mesh to the glass. However, these bird guards present several challenges: the patterns often fail to adhere properly to the glass surface during installation due to the specific characteristics of each product; applying the stickers at regular intervals requires significant labor, and maintaining consistent spacing is difficult. Furthermore, maintenance is challenging as the patterns frequently detach due to environmental factors such as rain or wind. Referring to Fig. 1, in order for birds to recognize pattern-shaped obstacles, a spacing of less than 10 cm in width and 5 cm in height is required, so a specific type of pattern is required. Accordingly, the Bird Guard Guidelines require that the spacing between patterns be within 5 cm vertically and 10 cm horizontally. Accordingly, when printing or attaching patterns on a transparent surface, the area between patterns must be 50 cm² or less. Regarding the adhesion of the pattern, the film adhered to transparent glass or a substrate must be composed of polyester or a polyester composite containing a visibility mark, and an acrylic pressure-sensitive adhesive or an equivalent must be used as the adhesive. The adhesive film is required to be free from impediments to use such as wrinkling, curling, tearing, pinholes, or discoloration, and must be able to adhere uniformly to the transparent substrate layer and be peelable as necessary. In response to these demands, applying bird guard films to transparent substrates such as building exterior walls or sound barriers can prevent bird collisions, but the patterns become visible to the human eye, compromising visibility and aesthetics. Accordingly, there is a need for a bird guard with improved transparency that can sufficiently prevent bird collisions without compromising visibility and aesthetics. Figure 1 is a guideline for a conventional bird guard. FIG. 2 is a cross-sectional view of a laminate for preventing bird collisions according to a preferred embodiment of the present invention. FIG. 3 is a drawing illustrating a collision prevention pattern (13) according to an embodiment of the present invention. FIG. 4 is a cross-sectional view of a laminate for preventing bird collisions according to another embodiment of the present invention. FIG. 5 is