Method for making thermoformable plastic sheets or plates for use as a heat-tackifiable reinforcing material
    1.
    发明授权
    Method for making thermoformable plastic sheets or plates for use as a heat-tackifiable reinforcing material 失效
    用于制造可热成型塑料片或板的方法,用作耐热粘性增强材料

    公开(公告)号:US06613429B1

    公开(公告)日:2003-09-02

    申请号:US09615333

    申请日:2000-07-12

    IPC分类号: A41D2700

    摘要: A method for making sheets and/or plates that are thermoformable as of a temperature of 80-90° C. and heat-tackifiable as of 80-90° C., and suitable for use as a heat-tackifiable reinforcing material. According to the method, 30-70 wt % of granules of one or more polymers that have a low melting point (50-90° C.) and are thermoformable as of 80-90° C. are mixed with 70-30 wt % of one or more polymers with a higher melting or softening point, in the form of granules or a powder having a particle size greater than around 500 &mgr;m, and preferably of 500-1000 &mgr;m, both kinds of polymers being thermoplastic and at least partially compatible, and optionally with the usual additives; the mixture is extruded under low-shear conditions at low temperatures of 100-140° C. to give a mixture having a pasty consistency that is insufficient to form a uniform mixture of molten polymers; and, after extrusion, and optionally once a fabric base (9,12) has been added to the extruded product, the product is laminated or calendered at a high pressure and at a temperature of around 100° C. to reduce the thickness thereof, then cooled to less than 30° C. before the end of the lamination or calendering process.

    摘要翻译: 一种制备片和/或板的方法,其可热成型为80-90℃的温度,并且可热粘合的为80-90℃,并且适合用作耐热粘性增强材料。 根据该方法,将30-70重量%的一种或多种具有低熔点(50-90℃)并且可热成型为80-90℃的聚合物的颗粒与70-30重量% 一种或多种具有较高熔点或软化点的聚合物,其为颗粒形式或具有大于约500μm,优选500-1000μm的粒度的粉末,两种聚合物是热塑性的并且至少部分相容 ,和任选地与通常的添加剂; 该混合物在低剪切条件下在100-140℃的低温下挤出,得到糊状稠度不足以形成熔融聚合物的均匀混合物的混合物; 并且在挤出之后,并且任选地一旦将织物基底(9,12)加入到挤出产品中,则产物在高压和约100℃的温度下层压或压延以减小其厚度, 然后在层压或压延过程结束之前冷却至低于30℃。

    Method for making thermoformable plastic sheets or plates for use as a
heat-tackifiable reinforcing material
    2.
    发明授权
    Method for making thermoformable plastic sheets or plates for use as a heat-tackifiable reinforcing material 失效
    用于制造可热成型塑料片或板的方法,用作耐热粘性增强材料

    公开(公告)号:US6103045A

    公开(公告)日:2000-08-15

    申请号:US125688

    申请日:1998-09-15

    摘要: A method for making sheets and/or plates that are thermoformable as of a temperature of 80-90.degree. C. and heat-tackifiable as of 80-90.degree. C., and suitable for use as a heat-tackifiable reinforcing material. According to the method, 30-70 wt % of granules of one or more polymers that have a low melting point (50-90.degree. C.) and are thermoformable as of 80-90.degree. C. are mixed with 70-30 wt % of one or more polymers with a higher melting or softening point, in the form of granules or a powder having a particle size greater than around 500 .mu.m, and preferably of 500-1000 .mu.m, both kinds of polymers being thermoplastic and at least partially compatible, and optionally with the usual additives; the mixture is extruded under low-shear conditions at low temperatures of 100-140.degree. C. to give a mixture having a pasty consistency that is insufficient to form a uniform mixture of molten polymers; and, after extrusion, and optionally once a fabric base (9, 12) has been added to the extruded product, said product is laminated or calendered at a high pressure and at a temperature of around 100.degree. C. to reduce the thickness thereof, then cooled to less than 30.degree. C. before the end of the lamination or calendering process.

    摘要翻译: PCT No.PCT / FR97 / 00305 Sec。 371日期:1998年9月15日 102(e)1998年9月15日PCT PCT 1997年2月19日PCT公布。 出版物WO97 / 30837 日期:1997年8月28日一种制造片状和/或板材的方法,该片材和/或板材可热成型为80-90℃的温度,并且在80-90℃下是可热粘合的,并且适合用作可热粘合的 增强材料。 根据该方法,将30-70重量%的一种或多种具有低熔点(50-90℃)并且可热成型为80-90℃的聚合物的颗粒与70-30重量% 的一种或多种具有较高熔点或软化点的聚合物,其为颗粒形式或粉末形式,其粒度大于约500μm,优选500-1000μm,这两种聚合物是热塑性的,并且至少 部分相容,以及任选地与通常的添加剂; 该混合物在低剪切条件下在100-140℃的低温下挤出,得到糊状稠度不足以形成熔融聚合物的均匀混合物的混合物; 并且在挤出之后,并且任选地一旦将织物基底(9,12)加入到挤出的产品中,则所述产品在高压和约100℃的温度下层压或压延以减小其厚度, 然后在层压或压延过程结束之前冷却至低于30℃。