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    • 91. 发明公开
    • Process for preparing multilayer fibrous structures
    • Verfahren zur Herstellung mehrschichtiger Faserstrukturen。
    • EP0072548A1
    • 1983-02-23
    • EP82107382.2
    • 1982-08-13
    • Montedison S.p.A.
    • Credali, LinoMartini, EmilioLori, Domenico
    • D21H1/02B32B29/02
    • B32B5/26B32B7/12B32B29/02B32B38/0036B32B2262/02B32B2262/062B32B2439/00D21H11/04D21H13/14D21H27/36D21H27/38Y10T428/31902Y10T428/31978Y10T442/659Y10T442/668
    • The bonding of composite sheets, comprising a layer of cellulosic fibres and a layer adjacent thereto consisting in whole or in part of thermoplastic synthetic fibres, is accomplished by superimposing such sheets on the side of their respective cellulosic fibre layers and by inserting between such layers a film of a thermoplastic polymer having the following characteristics:

      (a) a melting temperature lower than the melting temperature of the polymer forming the thermoplastic synthetic fibres contained in the layer adjacent to the cellulosic layer, intended for the adhesion, of the composite sheet;
      (b) a viscosity in the molten state - measured in a capillary viscosimeter, at a velocity gradient equal to or lower than 10 -1 seconds, and at a temperature comprised between a temperature higher by 10°C than the melting temperature of such polymer and a temperature higher by 20°C than the melting temperature of the abovesaid thermoplastic fibres - lower than 1 . 10 8 poises, and preferably lower than 1 . 10 5 poises;
      (c) a surface tension not exceeding by more than 5 dynes cm the surface tension of the polymer forming such thermoplastic fibres, measured at the same temperature;
      (d) a solubility parameter, at a temperature of 25°C, in a ratio of from 0.8 to 1.15, extremes included, to the solubility parameter of the polymer forming such thermoplastic fibres; and by heating the whole at a temperature ranging from a temperature exceeding by 10°C the melting temperature of the polymer forming such film to a temperature exceeding by 20°C the melting temperature of the polymer forming the synthetic fibres existing in the layer which is adjacent to the cellulosic fibre layer, intended for the adhesion, of the composite sheet.
    • 通过在其各自的纤维素纤维层的一侧叠加这样的片材并且通过在这些层之间插入来实现包括纤维素纤维层和与其相邻的层,其全部或部分由热塑性合成纤维构成的复合片材的粘合 具有以下特征的热塑性聚合物膜:(a)低于构成复合片材粘合的纤维素层相邻层中所含热塑性合成纤维的聚合物的熔融温度的熔融温度; ...(b)熔融状态下的粘度 - 在毛细管粘度计中测量,速度梯度等于或低于10 <1秒,并且在高于10℃的温度下, 这种聚合物的熔融温度和比上述热塑性纤维的熔融温度高20℃的温度 - 低于1℃。 10 8泊,优选低于1。 10 5泊; ...(c)形成这种热塑性纤维的聚合物的表面张力不超过5达因厘米。 在相同温度下测量;(d)溶解度参数,在25℃的温度下,包含的极限为0.8至1.15,与形成这种热塑性纤维的聚合物的溶解度参数; 并且通过在温度超过10℃的温度下将形成该膜的聚合物的熔融温度加热至超过20℃的温度,从而形成存在于层中的合成纤维的聚合物的熔融温度 与用于粘合的复合片材的纤维素纤维层相邻。
    • 95. 发明公开
    • Process for the preparation of cardboard of the corrugated type
    • 维尔法赫尔·赫尔斯特隆·冯·考特·卡尔顿(Karton)。
    • EP0044617A1
    • 1982-01-27
    • EP81302706.7
    • 1981-06-16
    • Montedison S.p.A.CARTOPIAVE S.p.A.
    • Credali, LinoMartini, EmilioLori, Domenico
    • B31F1/20B32B27/08
    • B32B3/28B31F1/2804B32B5/26B32B27/08B32B27/12B32B27/32B32B2262/02B32B2262/0253B32B2307/7265B32B2309/00B32B2323/043B32B2323/046
    • A cardboard of the corrugated type is prepared using as at least one liner(4) and as corrugated medium(8) a fibrous material consisting either totally or partially of thermoplastic synthetic fibres, and making the liner adhere to the tips of the corrugations of the corrugated medium bythermo-adhesion, wherein there is inserted between the surface of the liner to be adhered and the tips of the corrugations of the corrugated medium a film(5) of thermoplastic polymer having the following characteristics :

      (a) a melting temperature lower than that of the thermoplastic polymer constituting the synthetic fibres present in the liner and in the corrugated medium;
      (b) a viscosity of less than 1 x 10 8 poises, measured at a temperature of from a temperature exceeding by 10°C its melting temperature to a temperature exceeding by' 20°C the meltina temperature of the thermoplastic polymer constituting the synthetic fibres;
      (c) a surface tension not exceeding by more than 5 dynes/cm the surface tension of the thermoplastic polymer constituting the synthetic fibres, measured at the same temperature;
      (d) a solubility parameter at 25°C in a ratio of from 0.85:1 to 1:15:1 to the solubility parameter of the thermoplastic polymer constituting the synthetic fibres;

      and wherein the adhesion of the liner to the corrugated medium is carried out at a temperature at which no deformation of the corrugated medium occurs which is from a temperature exceeding by 10°C the melting temperature of the thermoplastic polymer constituting the film to a temperature exceeding by 20°C the melting temperature of the thermoplastic polymer constituting the synthetic fibres present in the liner and in the corruoated medium.
    • 波纹状的纸板采用至少一个衬垫(4)和波纹状介质(8)制备,纤维材料全部或部分由热塑性合成纤维组成,并使衬垫粘附在 波纹介质通过热粘合插入到待粘合的衬垫的表面和波纹介质的波纹的尖端之间,具有以下特征的热塑性聚合物膜(5):(a)熔化温度较低 比构成衬里和波纹状介质中存在的合成纤维的热塑性聚合物高; (b)粘度小于1×10 8泊,在温度超过10℃的温度下测量其熔融温度至超过20℃的温度,构成合成的热塑性聚合物的熔融温度 纤维; (c)在相同温度下测量的构成合成纤维的热塑性聚合物的表面张力不超过5达因/厘米的表面张力; (d)25℃下的比例为0.85:1至1:15:1的溶解度参数与构成合成纤维的热塑性聚合物的溶解度参数; 并且其中衬垫对瓦楞纸介质的粘附是在不发生波纹介质的变形的温度下进行的,该温度超过10℃,构成膜的热塑性聚合物的熔融温度超过温度 构成存在于衬里和波纹介质中的合成纤维的热塑性聚合物的熔融温度为20℃。