Apparatus for lining by lamination air-permeable containers with
thermoplastic sheeting or film
    81.
    发明授权
    Apparatus for lining by lamination air-permeable containers with thermoplastic sheeting or film 失效
    用于通过层压具有热塑性片材或薄膜的透气容器进行衬里的装置

    公开(公告)号:US4124434A

    公开(公告)日:1978-11-07

    申请号:US735774

    申请日:1976-10-26

    CPC classification number: B29C51/32 B29C51/165 B29C51/22 B29C51/424

    Abstract: Apparatus for lining by lamination air-permeable containers with thermoplastic film involving a deep drawing operation. The containers are held in deep drawing molds formed in a rotating table and the film blanks are formed from a film web onto individual holding means secured to another rotating table, the driving means for the tables being synchronized such that the film blanks are timely presented for the deep drawing operation following heating. Each holding means includes a metallic frame having a plurality of closely spaced pins for penetrating a film blank around the area to be deep drawn, the pins causing the area to be relieved of stresses during heating and shrinkage and hence troublesome wrinkles in the blanks prior to being deep drawn. Surprisingly, the pins do not cause tearing of even very thin film, because of the head conductor property of the pins and its effect on the arcing of the film blank in the vicinity of the pins as the blank shrinks.

    Abstract translation: 通过层压透气容器进行衬里的装置,其中包括涉及深冲压操作的热塑性薄膜。 将容器保持在形成在旋转台中的深拉模具中,并且薄膜坯料由薄膜网形成到固定到另一旋转台上的单独的固定装置上,用于桌子的驱动装置被同步,使得薄膜坯料被及时呈现 加热后的深冲作业。 每个保持装置包括金属框架,该金属框架具有多个紧密间隔的销,用于穿透围绕要拉深的区域的薄膜坯料,所述销使得该区域在加热和收缩期间减轻应力,并且因此在坯料之前产生麻烦的皱纹 被深吸。 令人惊奇的是,由于引脚的头部导体特性以及当毛坯收缩时,针对引脚附近的薄膜坯料的电弧的影响,引脚不会导致甚至非常薄的薄膜的撕裂。

    Polymeric and oligomeric formals
    82.
    发明授权
    Polymeric and oligomeric formals 失效
    聚合物和低聚物

    公开(公告)号:US4119612A

    公开(公告)日:1978-10-10

    申请号:US681672

    申请日:1976-04-29

    CPC classification number: C08K5/06 C08G4/00 C08G65/34 C08L101/00

    Abstract: A polymeric formal having the general formula ##STR1## wherein p is 0 or 1, n is a positive integer from 2 to 200 and R represents optionally halogen-substituted straight-chained or branched-chained alkyl radicals having 3 to 8 carbon atoms, an aryl radical or an aralkyl radical which can be substituted on one or both sides with alkyl or hydroxyalkyl ether groups; improved methods for the preparation of such formals, tetrabromoxylylene-bis-(.beta.-hydroxyethylether) compounds employed in the preparation of such formals and the use of such polymeric and oligomeric formals as flame retardant agents in plastic compositions especially thermoplastic and polycondensation plastic compositions.

    Abstract translation: 具有通式 + TR 的聚合物形式,其中p为0或1,n为2至200的正整数,R表示任选卤素取代的直链或支链烷基,其具有3至 8个碳原子,可以在烷基或羟烷基醚基团的一面或两面上被取代的芳基或芳烷基; 用于制备用于制备这种甲醛的这种甲醛,四溴苯甲烯 - 双(β-羟乙醚)化合物的改进方法以及在塑料组合物,特别是热塑性和缩聚塑料组合物中使用这种聚合物和低聚物作为阻燃剂的阻燃剂。

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