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導致複合鋁箔包裝袋出現離層的因素有哪些

2020/12/31 分類:材料新聞 1222 0

複合鋁箔包裝袋的出現給人們的生活帶來了巨大的便利，我們在平常時也隨處可見這種包裝，它也是消費者在購買時首先吧包裝之一。

然而成品的複合鋁箔包裝袋需要通過層層的制作，到最後才制成成品，而在制作的過程中會出現各種各樣的問題，其中常見的有離層現象，下面就給大家介紹一下出現離層的因素有哪些?

首先是材料導致的離層：因为鋁箔袋也是由多层材料复合而成，而复合材料的选择过程中，不同的材料特性不同，如果包装的东西不同，可能会因选择的材料不对而出现分层。比如有些产品油份大，有些需要高温处理，而有些需要低温冷藏。所以在采购複合包裝袋时一定需要告诉厂家，是用来包装什么的;

其次是複合師傅技術不合格導致的離層：複合鋁箔包裝袋一般都是由二层及两层以上材料复合而成，而在复合过程中，这些材料需要通过特殊的工艺进行处理，在复合过程中胶水使用或多或少都会影响袋子的离层;

再有是固化不充分或溫度太低或太短導致離層：複合包裝袋复合好后，需要放置恒温50度的一个环境去进行烘烤，其时间需要达到48小时，这样的目的也是为了把胶水烧烤干。而有些厂家为了节省时间，会提前把袋拿出来进行分切制袋而导致离层。这也是为什么包装袋在制作过程中，需要7-15个工作日。

最後是印刷油墨導致的離層：一是由于油墨中未揮發的活性溶劑、油墨中的樹脂或添加劑消耗了一部分固化劑，從而引起黏合劑的主劑與固化劑配比失調造成熱封離層。二是油墨本身墨層的耐熱性欠佳，在熱封時油墨層被破壞而引起熱封離層。當使用不耐熱的聚酯胺類油墨或將氨化聚丙烯類油墨用于高溫熱封場合時都可能産生熱封離層。

以上是对于“導致複合鋁箔包裝袋出現離層的因素有哪些”的介绍，希望对您有所帮助。飞富润包装彩印是一家专业的複合鋁箔包裝袋生产厂家，若您有需要的话可直接联系在线客服，获取相关资料。

本文出自泉州市飛富潤包裝彩印有限公司，轉載請注明出處：/2025.html

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"But you don't get all the whales you see, by a long shot. Many a whale gets away before you can fasten to him, and many another whale, after you have laid on and fastened, will escape you. He sinks, and tears the iron loose; he runs away to windward ten or twenty miles an hour, and you must cut the line to save your lives; he smashes the boat, and perhaps kills some of his assailants; he dies below the surface, and when he dies there he stays below, and you lose him; and sometimes he shows[Pg 66] such an amount of toughness that he seems to bear a charmed life. We fight him with harpoon and lance, and in these later days they have an invention called the bomb-lance or whaling-gun. A bomb-shell is thrown into him with a gun like a large musket, and it explodes down among his vitals. There's another gun that is fastened to the shaft of a harpoon, and goes off when the whale tightens the line; and there's another that throws a lance half-way through him. Well, there are whales that can stand all these things and live. The reply came slowly. "No; her husband is quite another man; this man's wife has been dead for years. No, Charlotte Oliver lives in--hark!" "Since the hour of her marriage she has never gone into her chamber without locking the door; she has never come out of it unarmed." The only purpose of my publication was to convince everybody of this, and thereby prevent the repetition of such a scandalous scene. An interpreter translated to the accused the questions put by the judge, who understood the replies, though he was not allowed to speak excepting in English. Dick, examining with the thoroughness of an expert, with Jeff’s and his chum’s life perhaps depending on his care, stated that he saw no damage to the waterproofed coverings of the water supports. Declaring that they would stand by and watch the airplane, Sandy and Dick watched Larry and Jeff get settled, Dick spun the propeller to pump gas into the still heated cylinders, Jeff gave the “switch-on—contact!” call, Dick, pulling down on the “prop,” sprang aside to avoid its flailing blades, and the amphibian’s engine took up its roar. He transmitted the suggestion. Almost as his hand touched the cable and twitched at it, his other hand, as he lay with his weight on his chin, face and chest, contacted something else—a large, roundish object, feeling like a spare landing wheel tire. It was short and to the point upon Cairness's part, and having finished he stood up. "I don't believe a word of hit," said the woman, who yet showed that she was touched by the allusion to the Baptist Church, as the Deacon had calculated, for most of the people of that section professed to be of that denomination. "What'll yo' gi' me for them chickens?" HoME 学生妹被老师 ENTER NUMBET 0010www.aaa87.com.cn
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