Sheeting made from polymers of ethylene and propylene, and...

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 23/12 (2006.01) B32B 17/10 (2006.01) B32B 27/06 (2006.01) B44C 1/10 (2006.01) C08J 5/18 (2006.01) C08L 23/06 (2006.01) C09J 7/02 (2006.01) B29C 43/24 (2006.01)

Patent

CA 2143676

The invention concerns sheeting made from ethylene and propylene polymers optionally also containing processing aids, fillers, pigments or other additives. The sheeting is characterized in that it contains (a) a propylene homopolymer with a melt flow rate (measured at 230°C and under a load of 2.16 kg) of about 0.8 to 3.0 g/10 min, a melting point T m of about 154 to 168°C (determined by differential scanning calorimetry) and an E-modulus of about 900 to 1500 N/mm2 (determined in accordance with DIN 53457n and (b) an ethylene homopolymer with a melt flow rate (measured at 190°C and under a load of 2.16 kg) of about 1.5 to 3.0 g/10 thin, a melting point T m of about 110 to 130°C and an E-modulus of about 200 to 400 N/mm2, in the ratio of 100 parts by wt of the propylene homopolymer to about 5 to 20 parts by wt. of the ethylene homopolymer. The sheeting can be used in the form of self-adhesive composite sheets suitable for the lamination-coating of any kind of object.

L'invention concerne une feuille à base de polymères d'éthylène et de propylène, renfermant éventuellement des auxiliaires de transformation, des charges, pigments ou autres adjuvants. Cette feuille est caractérisée en ce qu'elle renferme a) un homopolymère du propylène d'un indice de fluidité MFI (230 C/2,16 kg) d'environ 0,8 à 3,0 g/10 min, d'un point de fusion (Tm) d'environ 154 à 168 C (déterminé par ACD) et d'un module E d'environ 900 à 1500 N/mm2 (déterminé conformément à DIN 53457), et b) un homopolymère d'éthylène d'un indice de fluidité MFI (190 C/2,16 kg) d'environ 1,5 à 3,0 g/10 min, d'un point de fusion (Tm) d'environ 110 à 130 C et d'un module E d'environ 200 à 400 N/mm2, étant entendu qu'on compte 100 parties en poids d'homopolymère du propylène pour environ 5 à 20 parties en poids d'homopolymère d'éthylène. La feuille peut se présenter sous la forme d'une feuille composite autocollante au moyen de laquelle des objets ou articles quelconques peuvent être revêtus.

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