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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0658284 (1976-02-17) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 320 인용 특허 : 0 |
Cellular retroreflective sheeting, which comprises a base layer of retroreflective elements and a transparent cover film supported in spaced relation away from the base layer by a network of narrow intersecting bonds that form hermetically sealed cells within which retroreflective elements are isola
Cellular retroreflective sheeting, which comprises a base layer of retroreflective elements and a transparent cover film supported in spaced relation away from the base layer by a network of narrow intersecting bonds that form hermetically sealed cells within which retroreflective elements are isolated from retroreflective elements of different cells, is given greater durability by use of bonds that are cured in situ after they have been thermoformed into sealing contact between the cover film and base layer.
Retroreflective sheeting comprising (1) a base sheet having a layer of retroreflective elements disposed over one of its surfaces; (2) a cover sheet disposed in spaced relation from the layer of retroreflective elements; and (3) a network of narrow intersecting bonds extending between said cover she
Retroreflective sheeting comprising (1) a base sheet having a layer of retroreflective elements disposed over one of its surfaces; (2) a cover sheet disposed in spaced relation from the layer of retroreflective elements; and (3) a network of narrow intersecting bonds extending between said cover sheet and base sheet and comprising binder material thermoformed at the point of contact between said bonds and at least one of said cover sheet and base sheet so as to adhere the two sheets together and form a plurality of cells within which retroreflective elements are hermetically sealed; characterized in that the binder material is selected from materials that show increased adhesion to said at least one of the cover sheet and base sheet when a solid layer of the material that has been previously laminated to said sheet is cured, and further characterized in that the binder material is cured in situ after being thermoformed, whereby the bonds have increased bond strength to the cover sheet and base sheet.
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