摘要:
A tear resistant film comprises more than five layers situated one on the other in a parallel array. The layers are individually selected from a stiff polyester or copolyester, a ductile polymeric material, and optionally, an intermediate material. The stiff polyester or copolyester is oriented in at least one direction. Tear resistance may be measured in a Graves area test and reflects the ability of the film to absorb energy. The films of the invention are useful in many articles including security control laminates for glazing members.
摘要:
A tear resistant film comprises more than five layers situated one on the other in a parallel array. The layers are individually selected from a stiff polyester or copolyester, a ductile polymeric material, and optionally, an intermediate material. The stiff polyester or copolyester is oriented in at least one direction. Tear resistance may be measured in a Graves area test and reflects the ability of the film to absorb energy. The films of the invention are useful in many articles including security control laminates for glazing members.
摘要:
A tear resistant film comprises at least three layers situated one on the other in a parallel array. The layers are individually selected from a stiff polyester or copolyester, a ductile sebacic acid based copolyester, and optionally, an intermediate material. Tear resistance may be measured in a Graves area test and reflects the ability of the film to absorb energy. The films of the invention are useful in many articles including security control laminates for glazing members.
摘要:
Articles including post-formed multilayer optical films with layers of at least one strain-induced birefringent material, methods of manufacturing such articles by post-forming multilayer optical films, and multilayer optical films that are particularly well-suited to post-forming operations are disclosed. The articles, methods and multilayer optical films of the present invention allow for post-forming of multilayer optical films including strain-induced index of refraction differentials while retaining the desired optical properties of the multilayer optical films.
摘要:
Fresnel lenses are prepared from a transparent substrate and a structured polyurethane layer. The structured polyurethane layer includes a curable reaction mixture. The curable reaction mixture includes a polyol, a polyisocyanate, a catalyst, and at least one UV stabilizer. The Fresnel lenses may be used in panel arrays and in solar power generation devices.
摘要:
An ink receptive article including a substrate having on at least a portion of a major surface thereof an antistatic layer, and wherein the antistatic layer has on at least a portion of a major surface thereof an ink receptive layer, wherein the ink receptive layer includes a crosslinked polymer selected from the group consisting of polyurethanes, polyethers, polyesters, polyacrlylics, polyureas, copolymers thereof, and blends thereof.
摘要:
The present invention is directed an oriented, foamed article having an integral security element, and a method of making the article. The oriented foam article is particularly useful in the preparation of printed security documents such as currency, stock and bond certificates, birth and death certificates, land titles and abstracts and the like.
摘要:
A transparent tamper-indicating data sheet is provided wherein a transparent durable layer (a first major component), such as polyester or a multilayer optical film (MOF), is adhered to a fragile layer (a second major component), such as a holographic foil or a security laminate, such as Confirm™ Security Laminate, either the fragile sheet or film or the durable layer being printed with identification and/or verification information. The components of the transparent data sheet are laminated together with or without an adhesive layer between the two major components. The two major components have the same outside dimensions and are congruent. Evidence of tampering with the identification or verification information is easily viewed from either side of the transparent data sheet.
摘要:
Dental articles including at least one optical surface formed of a multilayer optical film including layers of at least one strain-induced birefringent material are disclosed. The multilayer optical films included in the dental articles is preferably post-formed into desired non-planar shapes in manners that result in some deformation of the optical stack of the multilayer optical films. A variety of dental implements can be constructed with multilayer optical film including dental mirrors, light guides for use in connection with photo-curing dental materials, and matrix bands for use in molding photo-curing dental restoratives.
摘要:
A multilayer optical film comprising: (a) an optical stack comprising alternating layers of at least a first polymer and a second polymer; and (b) a holographic image.