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    • 8. 发明授权
    • Process of preparation of biodegradable films from semi refined kappa carrageenan
    • 从半精制卡波卡拉胶制备可生物降解薄膜的工艺
    • US07067568B1
    • 2006-06-27
    • US11003250
    • 2004-12-03
    • Pushpito Kumar GhoshArup Kumar SiddhantaKamalesh PrasadRamavatar MeenaAmit Bhattacharya
    • Pushpito Kumar GhoshArup Kumar SiddhantaKamalesh PrasadRamavatar MeenaAmit Bhattacharya
    • C09J3/215C09J3/18C09J11/02C09J11/08
    • C08B37/0042C08J5/18C08J2305/00C08L5/00C08L5/12C08L2666/02
    • The present invention relates to use of inexpensive semi-refined kappa carrageenan as a seaweed polysaccharide in preparation of tough, biodegradable films exhibiting improved performance over films obtained from refined kappa carrageenan. The formulation requires no gelling salt and the only other essential components of the film are glycerol and water, the former being used as plasticizer as reported in the prior art. The films can be recycled and reprocessed if required. The performance of the films can be further enhanced by incorporating polyvinyl alcohol that lends toughness and clarity as also natural rubber latex that imparts greater elasticity and barrier properties. Films of optimum composition can be pulse heat sealed immediately after casting and used for preparation of soft capsules and pouches. It is possible to store solvents and oils in the pouches. In view of the more eco-friendly processing of semi-refined kappa carrageenan compared to refined kappa carrageenan, films made with the former would also effectively be “greener”.
    • 本发明涉及廉价的半精制卡波卡拉胶作为海藻多糖的用途,用于制备韧性可生物降解的膜,其表现出从精制的卡拉卡拉胶获得的薄膜的性能改善。 制剂不需要胶凝盐,膜的唯一其它基本组分是甘油和水,前者被用作现有技术中报道的增塑剂。 如果需要,这些胶片可以回收再利用。 通过加入提供韧性和透明度的聚乙烯醇以及赋予更大弹性和阻隔性能的天然橡胶胶乳,可以进一步提高膜的性能。 最佳组成的膜可以在铸造后立即进行脉冲热封,并用于制备软胶囊和小袋。 可以将溶剂和油储存在袋中。 鉴于与精制卡波卡拉胶相比,半精制卡波卡拉胶更加环保的加工,与前者相比,电影也将更加“绿化”。
    • 9. 发明授权
    • Carpet tile production method
    • 地毯瓦生产方法
    • US4737221A
    • 1988-04-12
    • US38869
    • 1987-04-15
    • Peter W. BellDavid S. QueenJohn B. Smith
    • Peter W. BellDavid S. QueenJohn B. Smith
    • D06N7/00B32B1/06C09J3/18
    • D06N7/0081D06N7/0076D06N2201/082D06N2203/042D06N2203/08D06N2205/06D06N2207/123D06N2209/067D06N2209/1628Y10T156/1052Y10T156/109Y10T428/23979Y10T428/23986Y10T442/647Y10T442/669
    • A method of backing carpeting material 19 with hot-melt compositions such as atactic polypropylene (APP) or bitumen (with or without additives) comprises carefully doctoring selected thicknesses of the composition to the undersurface of the material 19 with the wear surface of the material uppermost. In one arrangement (FIG. 3) this is achieved using a lick roll arrangement 20 incorporating a doctor blade, cooling the backed product at cooling zones 28, 29 and applying the material to a nip formed by rollers 21. In another arrangement (FIG. 1) this is achieved by doctor box 16 applying the composition to a carrier 13, the carpeting material 19 then being laminated at roll 21 to the layer of composition, the laminate then being cooled before being stripped from the carrier (13). In a further arrangement (FIG. 2) the carrier is in the form of sheet material 15 which is supported by endless belt 13 and which is bonded into the hot-melt composition to become an integral part thereof.
    • 使用热熔组合物如无规立构聚丙烯(APP)或沥青(具有或不具有添加剂)的地毯材料19的背衬方法包括:将材料19的下表面的选定厚度仔细地涂覆到材料19的下表面上, 。 在一种布置(图3)中,这是使用结合有刮刀的舔辊装置20来实现的,在后退的冷却区域28,29上冷却支撑的产品,并将材料施加到由辊21形成的辊隙上。 1)这通过将组合物施加到载体13上的涂料盒16实现,然后将地毯材料19在辊21上层合到组合物层上,然后层压体在从载体(13)剥离之前被冷却。 在另外的布置(图2)中,载体是片材15的形式,其由环形带13支撑并且结合到热熔组合物中以成为其一体部分。