摘要:
A dental appliance for positioning a patient's teeth includes a removable orthodontic tooth positioning appliance having teeth receiving cavities shaped to directly receive at least some of the patient's teeth and apply a resilient positioning force to the patient's teeth. The appliance includes a hard polymer layer having a hard polymer layer elastic modulus disposed between a first soft polymer layer having a first soft polymer layer elastic modulus and a second soft polymer layer having a second soft polymer layer elastic modulus. The hard polymer layer elastic modulus is greater than each of the first soft polymer layer elastic modulus and the second soft polymer layer elastic modulus. At least one of the first soft polymer layer and the second soft polymer layer has a flexural modulus of greater than about 35,000 psi.
摘要:
The present invention relates to an optical film structure having improved properties and comprising at least one prism film and/or diffuser film as well as a multilayer optical film, wherein the multilayer optical film has at least one top film having an outer layer directed towards the prism film and/or diffuser film and made from a plastics composition containing a transparent thermoplastic and at least one quaternary ammonium salt of a perfluoroalkylsulfonic acid as lubricant additive. According to the invention the outer layer has at least one coefficient of sliding friction of 5 μm (R3z in accordance with ISO 4288). The invention also provides a backlight unit containing the improved film structure and the use of the optical film structure according to the invention for liquid crystal screens.
摘要翻译:本发明涉及具有改进性能并且包括至少一个棱镜膜和/或漫射膜以及多层光学膜的光学膜结构,其中该多层光学膜具有至少一个顶部膜,其外层指向 棱镜膜和/或漫射膜,并由含有透明热塑性塑料和至少一种全氟烷基磺酸季铵盐作为润滑剂添加剂的塑料组合物制成。 根据本发明,外层具有至少一个相对于根据ASTM D 1894-06测量的棱镜膜和/或漫射膜的<0.30的滑动摩擦系数,粗糙度R3z>5μm(R3z按照 与ISO 4288)。 本发明还提供了一种背光单元,其包含改进的膜结构和根据本发明的用于液晶屏的光学膜结构的使用。
摘要:
The present invention relates to a layer structure having improved properties for laser engraving, to particular embodiments of said layer structures in the form of co-extrusion films, and to security documents, preferably identification documents comprising said layer structures.
摘要:
The present invention relates to a layer structure having improved properties for laser engraving, to particular embodiments of said layer structures in the form of co-extrusion films, and to security documents, preferably identification documents having said layer structures.
摘要:
The invention relates to films having good sliding friction properties and gloss values, consisting of a plastics composition comprising from 96 to 99.499 wt. % of a transparent polycarbonate and from 0.001 to 4 wt. % quaternary ammonium salts of perfluoroalkylsulfonic acids as lubricant additive and from 0.5 to 29.999 wt. % barium sulfate, the sum of the mentioned constituents in each case being 100 wt. %. The films exhibit improved properties in processing. The invention relates further to mouldings produced from these films.