Opaque and pearlescent, laminated and stretched products,...

B - Operations – Transporting – 32 – B

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B32B 27/32 (2006.01) B29C 55/04 (2006.01)

Patent

CA 2025868

An opaque and pearlescent, laminated and stretched product comprises a layer (A) and a layer (B) overlaid on and laminated by melt-adhesion to at least one side of the layer (A). The layer (A) forms a uniform layer comprising 97 to 70 % by weight of a crystalline polypropylene and 3 to 30 % by weight of a cyclopentadiene derived petroleum resin having a softening point of 160°C or higher and stretched in at least one direction. The layer (B) comprising a crystalline polypropylene whose crystalline melting point is higher or lower than that of the crystalline polypropylene forming the layer (A) by less than 10°C.

Un produit opaque et nacré, laminé et étiré, est constitué d'une couche (A) et d'une couche (B) appliquée et laminée par adhérence à chaud sur au moins un côté de la couche (A). La couche (A) forme une couche uniforme renfermant 97 à 70 % en poids d'un polypropylène cristallisé et de 3 à 30 % en poids d'une résine de pétrole dérivée du cyclopentadiène, possédant un point de ramollissement de 160 degrés C ou plus, et étiré dans au moins une direction. La couche (B) renferme un polypropylène cristallisé dont le point de ramollissement est supérieur ou inférieur à celui du polypropylène cristallisé formant la couche (A), avec un écart de moins de 10 degrés C.

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