METHOD FOR PRODUCING SHAPE MEMORY ANTI-COUNTERFEITING IDENTIFIER
    59.
    发明授权
    METHOD FOR PRODUCING SHAPE MEMORY ANTI-COUNTERFEITING IDENTIFIER 有权
    VERFAHREN ZUR HERSTELLUNG EINESFORMGEDÄCHTNISIDENTIFIKATORSZUM SCHUTZ VORFÄLSCHUNGEN

    公开(公告)号:EP2624241B1

    公开(公告)日:2017-02-15

    申请号:EP10857746.1

    申请日:2010-12-22

    摘要: A method for producing shape memory anti-counterfeiting identifier includes the following steps: a high polymer material with a shape memory function without the need of sunshine cross-linking or chemical cross-linking is directly extruded to become sheet in an extruder or is injected to be molded in an injection molding machine, and the extruded sheet can be a planar sheet or a sheet having a surface on which concave-convex patterns or characters are formed; the above sheet is then heated to the temperature higher than the vitrification temperature and lower than the melting point temperature, and the patterns or characters are pressed on the planar sheet, or the sheet on which the concave-convex patterns or characters are already formed is pressed to become planes or other patterns and characters; the sheet is then cut into small sheets, wherein one pattern or one group of characters is implied on every small sheet, and when the small sheets are again heated to the temperature higher than the vitrification temperature and lower than the melting point temperature, they will return to the extruded state.

    摘要翻译: 一种形状记忆防伪识别器的制造方法,其特征在于,具有不需要阳光交联或化学交联的形状记忆功能的高分子材料直接在挤出机中挤出成为片材,或注入到 在注射成型机中成型,并且挤出片材可以是具有凹凸图案或字符的表面的平面片材或片材; 然后将上述片材加热到高于玻璃化温度并低于熔点温度的温度,并且将图案或字符压在平面片上,或者已经形成凹凸图案或字符的片材是 被迫成为飞机或其他模式和人物; 然后将片材切成小片,其中每个小片材上都包含一种图案或一组字符,并且当小片材再次被加热到高于玻璃化温度并低于熔点温度的温度时,它们将 回到挤出状态。

    BIDIRECTIONAL SHAPE-MEMORY POLYMER, METHOD OF ITS PRODUCTION AND ITS USE
    60.
    发明授权
    BIDIRECTIONAL SHAPE-MEMORY POLYMER, METHOD OF ITS PRODUCTION AND ITS USE 有权
    双向形状记忆聚合物,方法ITS和使用

    公开(公告)号:EP2935413B1

    公开(公告)日:2016-08-03

    申请号:EP13814153.6

    申请日:2013-12-20

    IPC分类号: C08J3/24 B29C61/00

    摘要: The present invention relates to an article consisting of or comprising a bidirectional shape-memory polymer (bSMP), the bSMP comprising: first phase-segregated domains (AD) having a first transition temperature (Tt,AD) corresponding to a crystallization transition or glass transition of the first domains (AD), second phase-segregated domains (SD) having a second transition temperature (Tt,AD) corresponding to a crystallization transition or glass transition of the second domains (SD), the second transition temperature (Tt,SD) being higher than the first transition temperature (Tt,AD), and covalent or physical bonds cross-linking the polymer chains of the bSMP, and in this way interconnecting the first and second domains (AD, SD), wherein the second phase-separated domains (SD) form a skeleton which is at least partially embedded in the first phase-segregated domains (AD), and wherein polymer chain segments of the bSMP forming the first domains (AD) are substantially orientated in a common direction, such that the bSMP is able to undergo a reversible shape-shift between a first shape (A) at a first temperature (Thigh) and a second shape (B) at a second temperature (Tlow) upon variation of temperature between the first and second temperature (Thigh, Tlow) driven by the crystallization and melting or vitrification and melting of the first phase-separated domains (AD) and without application of an external stress, with Tlow