摘要:
The present invention provides a method for producing retroreflective sheeting useful for marking or the like of signs such as road signs and construction signs; number plates of vehicles such as motorcars and motorcycles; materials for safety such as clothes and life jackets; signboards, etc., and the method is a method for producing retroreflective sheeting, which comprises embedding glass beads substantially in a monolayer in a temporary support at least one surface of which is composed of a thermoplastic resin in such a manner that at least part of each bead is embedded in the thermoplastic resin; forming a vapor-deposited metal film on the surface in which the glass beads were embedded; superposing thereon a thermoformable support film; pressing the resultant superposed matter under heating to embed the vapor-deposited metal film portion of each of the glass beads in the support film; and peeling the temporary support from the superposed matter in such a manner that the glass beads remain in the support film, said method being characterized in that a thin film containing a coupling agent is previously formed on the vapor-deposited metal film of the temporary support in which the glass beads are embedded and on which the vapor-deposited metal film is then formed, and then the support film is superposed thereon.
摘要:
The present invention provides a retroreflective sheeting comprising:a base retroreflective sheeting having a flat front face layer at the light-incident side, anda fluorine-contained resin film having a total light transmittance of at least 80%, laminated on the flat front face layer of the base retroreflective sheeting via an adhesive layer.This retroreflective sheeting is low in extent of freezing or snow sticking on the surface when used in cold districts, and shows excellent stain removability even for the stain made on the surface by mischief with a paint, an ink or the like.
摘要:
A method for making retroreflective sheeting comprising the steps of placing a light-transmittable protective film on glass beads in a support sheet which consists of a binder layer and a reinforcing layer, and which is provided with retroreflective glass beads embedded in the binder layer, and thermoforming parts of the support sheet under heating and pressure so as to partially bond the binder layer of the support sheet to the protective film, which is characterized in that the reinforcing layer of the support sheet consists of a crosslinkable resin having shearing stress S in the range of 6.times.10.sup.6 -1.2.times.10.sup.7 dyne/cm.sup.2 before the thermoforming. A retroreflective sheeting made by this method has a high uniformity of the joint portions of the support sheet and protective film. Even when this retroreflective sheeting is used outdoors for a long period of time, troubles including peeling-off of the protective film do not substantially occur. This retroreflective sheeting can be utilized extensively as a road sign board, a license plate for a vehicle, a sign board for construction work and an advertisement board.
摘要:
Retroreflective sheeting having excellent weatherability under prolonged outdoor use, which comprises a support sheet in one side of which retroreflective glass beads are embedded as substantially a monolayer in such a manner that at least their non-reflective portions are exposed on said sheet; and a light-transmittable protective film provided on the glass beads on said support sheet, said protective film being partially fixed onto the support sheet; in which at least the surface layer of the support sheet in which the glass beads are embedded is formed of a resin composition comprising (a) thermofusible resin(s) having a glass transition temperature not higher than 50.degree. C. and (a) cellulose derivative(s) having a glass transition temperature not lower than 90.degree. C.
摘要:
This invention provides a capsule type retroreflective sheeting excelling in strength and longterm weatherability, the connecting walls, which partially connect the light-transmitting protective film and support film while retaining the spaces between the two films, being free of internal flaws such as deficiently filled portions and having uniform structure and shape. The capsule type retroreflective sheeting in which the connecting walls are formed by partially thermofusing and thermoforming the support film is characterized in that the support film is composed of a resin composition which contains a thermofusible rein and a crosslinking agent, said thermofusible resin having a shearing stress at 180.degree. C. within a range of 9.times.10.sup.3 .times.1.times.10.sup.5 dyne/cm.sup.2, and which can form a non-fusible crosslinked resin having a shearing stress at 180.degree. C. of at least 1.times.10.sup.6 dyne/cm.sup.2 after the crosslinkage.
摘要翻译:本发明提供一种具有强度和长期耐候性的胶囊型逆反射片,连接壁部分地连接透光保护膜和支撑膜,同时保持两个膜之间的间隔,没有内部缺陷,例如不充分的部分 并具有均匀的结构和形状。 其中通过部分热熔和热成型支撑膜形成连接壁的胶囊型定向反光片的特征在于,支撑膜由含有热熔性树脂和交联剂的树脂组合物构成,所述热熔性树脂具有剪切应力 在180℃下在9×10 3×1×10 5达因/ cm 2的范围内,并且可以在交联后形成在180℃下具有至少1×10 6达因/ cm 2的剪切应力的不熔融交联树脂。
摘要:
This invention relates to lens type functional retroreflective sheeting having retroreflective regions and visual functionality presenting regions, the retroreflective sheeting comprising:a base sheet consisting of a support comprising a functional resin layer containing a functional pigment having light-storing or fluorescent properties, microspherical lens-embedding regions in which microspherical lenses are densely distributed on the surface of the functional resin layer of the support so as to form a mono-layer, and microspherical lens-free regions in which substantially no microspherical lens is embedded and the functional resin layer is exposed;a transparent protective film disposed above the microspherical lens-bearing surface of the base sheet; andbonds at which said base sheet and said transparent protective film are partly bonded together. This lens type functional retroreflective sheeting not only afford good visibility to viewers positioned in the direction of the light source (e.g., automobile drivers), but also afford good visibility at night to drivers and pedestrians positioned in directions different from the that of the light source.
摘要:
The present invention discloses lens-type retroreflective sheeting excellent in appearance and having constant thickness and desired retroreflective performance, wherein the transparent microspheres in the retroreflective layer are composed of transparent microspherical lenses (A) having a refractive index of 1.8 or more and transparent microspherical fillers (B) having a refractive index different by at least 5% from the refractive index of the lenses (A).
摘要:
The present invention comprises lens-type retroreflective sheeting which is excellent in appearance and having constant thickness and desired retroreflective performance, wherein the transparent microspheres in the retroreflective layer are composed of transparent microspherical lenses (A) having a refractive index of 1.8 or more and transparent microspherical fillers (B) having a refractive index different by at least 5% from the refractive index of the lenses (A).
摘要:
A negative electrode active material for an electric device includes an alloy containing Si in a range of greater than or equal to 27% by mass and less than 100% by mass, Sn in a range of greater than 0% by mass and less than or equal to 73% by mass, V in a range of greater than 0% by mass and less than or equal to 73% by mass, and inevitable impurities as a residue. The negative electrode active material can be obtained with, for example, a multi DC magnetron sputtering apparatus by use of Si, Sn, and V as targets. An electric device using the negative electrode active material can achieve long cycle life and ensure a high capacity and cycle durability.
摘要:
Disclosed is a negative electrode active material for electrical devices, comprising an alloy having a composition represented by the formula: SixCyAlz. In the composition formula: SixCyAlz, x, y and z represent mass percent values and satisfy the following conditions: x+y+z=100; 36≦x
摘要翻译:公开了一种电气器件用负极活性物质,其包含具有由下式表示的组成的合金:SixCyAlz。 在组成式中:SixCyAlz,x,y和z表示质量百分数值,满足以下条件:x + y + z = 100; 36 @ x <100; 0