摘要:
The invention is a method, triggering unit, and system for activating an oxygen scavenging composition at high speeds. The triggering unit includes a plurality of UV lamps that can operate at increased temperatures and have high output intensites from about 10 to 35 mW/cm2. The triggering unit can activate films at speeds from about 20 to 100 fps. Mercury amalgam lamps are useful in the practice of the invention. The invention also includes a UV dose management system and film tensioning system that facilitates triggering at high film speeds. The UV dose management system controls the amount of UV exposure that the film receives so that the oxygen scavenging rate of the activated composition can be controlled.
摘要翻译:本发明是一种高速激活氧气清除组合物的方法,触发单元和系统。 触发单元包括能够在增加的温度下操作并具有约10至35mW / cm 2的高输出强度的多个UV灯。 触发单元可以以大约20至100fps的速度激活胶片。 汞合金灯在本发明的实践中是有用的。 本发明还包括一种UV剂量管理系统和薄膜张紧系统,其有助于以高胶片速度触发。 UV剂量管理系统控制膜接收的UV暴露量,从而可以控制活化组合物的除氧速率。
摘要:
A multilayer film includes a first and second outer layer each including a polymer; and an internal layer including an oxygen scavenger; where the first outer layer includes a blend of a polymer and an antifog agent, where the antifog agent includes at least one of a mono fatty acid derivative of glycerol, and a polyglycerol mono fatty acid derivative; and wherein the first outer layer includes from 0.1% to 3%, by weight of the first outer layer, of the antifog agent.
摘要:
The present invention generally relates to polymeric compositions capable of providing enhanced crosslinking efficiency, to single and multilayer films having the subject composition contained within at least one layer of said film, to a method of treating said film to provide enhanced crosslink within said at least one layer of the film and to the resultant cross-linked film product as well as articles made from said cross-linked film product.
摘要:
An oxygen scavenging composition composed of a carrier and a metal coated, inert, porous particulate material having the metal substantially in a zero valence state. The composition is contained within the interior cavity of a container to scavenge oxygen therein. The composition may form at least a part of the interior surface of the container or be present therein in the form of a film, mat, sachet or ceramic.
摘要:
An oxygen scavenging agent and compositions capable of providing good oxygen absorption capabilities which contain said agent, wherein the agent is a modified anionic hydrotalcite particulate material.
摘要:
Improved compositions for scavenging oxygen are disclosed. These materials, characterized by low degree crystallinity and a glass transition temperature of lower than -15.degree. C., have high oxygen scavenging rates at low temperatures. The composition comprises an ethylenically unsaturated hydrocarbon and a transition metal salt catalyst and can be incorporated into various types of layers. It is preferable that the composition be incorporated into layers of multilayered articles used for packaging oxygen-sensitive products such as food products.
摘要:
A method of making a foam comprising the following steps. A mixture is created comprising (i) a first reactant comprising triglyceride having acrylate functionality, (ii) a second reactant comprising diacrylate, and (iii) a blowing agent. The mixture is expanded to create a froth. The first and second reactants of the froth are reacted to create the foam.
摘要:
The invention is a method, triggering unit, and system for activating an oxygen scavenging composition at high speeds. The triggering unit includes a plurality of UV lamps that can operate at increased temperatures and have high output intensites from about 10 to 35 mW/cm2. The triggering unit can activate films at speeds from about 20 to 100 fps. Mercury amalgam lamps are useful in the practice of the invention. The invention also includes a UV dose management system and film tensioning system that facilitates triggering at high film speeds. The UV dose management system controls the amount of UV exposure that the film receives so that the oxygen scavenging rate of the activated composition can be controlled.
摘要翻译:本发明是一种高速激活氧气清除组合物的方法,触发单元和系统。 触发单元包括能够在增加的温度下操作并具有约10至35mW / cm 2的高输出强度的多个UV灯。 触发单元可以以大约20至100fps的速度激活胶片。 汞合金灯在本发明的实践中是有用的。 本发明还包括一种UV剂量管理系统和薄膜张紧系统,其有助于以高胶片速度触发。 UV剂量管理系统控制膜接收的UV暴露量,从而可以控制活化组合物的除氧速率。
摘要:
The invention is a UV sensitive composition that undergoes a color change upon exposure to a predetermined dosage of UV-C radiation. The UV-C sensitive composition comprises a halogenated polymer, such as polyvinylidene chloride, that produces an acid upon exposure to UV radiation, and a pH sensitive dye. Upon exposure to UV-C radiation, the halogenated polymer undergoes degradation and produces HCl. The pH sensitive dye changes color as a result in an increase in HCl in the system. The composition may also include an acid scavenging composition and/or a diluent to control the amount of HCl produced in the system. The amount of HCl liberated from UV-C exposure may be selectively controlled so that a color change may be produced at a desired UV-C dosage. In some embodiments, the composition may be used to indicate a UV-C dosage from about 100 to 1600 mJ/cm2.
摘要翻译:本发明是在暴露于预定剂量的UV-C辐射时经历变色的UV敏感组合物。 UV-C敏感组合物包含在暴露于UV辐射时产生酸的卤代聚合物,例如聚偏二氯乙烯和pH敏感染料。 当暴露于UV-C辐射时,卤化聚合物发生降解并产生HCl。 pH敏感染料会改变颜色,导致系统中HCl的增加。 组合物还可以包括酸清除组合物和/或稀释剂以控制系统中产生的HCl的量。 可以选择性地控制从UV-C曝光释放的HCl的量,使得可以在期望的UV-C剂量下产生颜色变化。 在一些实施方案中,组合物可用于表示约100至1600mJ / cm 2的UV-C剂量。
摘要:
The present invention is directed to an oxygen scavenger composition comprising a mixture of (i) a polyester polymer composed of polymer segments containing cycloalkenyl group or functionality; and (ii) an ester type polymer selected from (a)a polyester having a high content of alkylene groups; (b) a polylactone; and (c) a polyvinylacetate having at least about 50 weight percent vinyl acetate mer units therein. The present polymer composition has been found to act as an oxygen scavenger agent under both ambient and refrigerated conditions, to be compatible with conventional film forming packaging materials, to provide compositions exhibiting low tack, and to be capable of being readily processed using conventional film forming equipment.