The present invention provides a cap or closure comprising a polypropylene composition, wherein said composition comprises: (i) a random propylene ethylene copolymer having an ethylene content of 3.3-7% wt, and (ii) an additive selected from an antistatic agent, an antioxidant, an acid scavenger and a nucleating agent.
1. A cap or closure comprising a polypropylene composition, wherein said composition comprises:
(i) a multimodal random propylene ethylene copolymer having an ethylene content of 3.3-7% wt wherein said multimodal random propylene ethylene copolymer comprises two different propylene copolymers,
(ii) 0.01 to 0.3% wt of a non-polymeric nucleating agent, and
(iii) a sterically hindered phenol antioxidant in the amount of 0.01 to 1 wt %.
2. A cap or closure as claimed in claim 1 , wherein the melt flow rate of the composition is 5 to 30 g/10 min.
3. A cap or closure as claimed in claim 1 , wherein said composition comprises an antistatic agent.
4. A cap or closure as claimed in claim 1 , wherein said composition comprises an acid scavenger.
5. A cap or closure as claimed in claim 1 , wherein said composition comprises an antistatic agent and an acid scavenger.
6. A cap or closure as claimed in claim 1 for use in the food or drinks industry.
7. A cap or closure as claimed in claim 1 which is a screw cap.
8. A cap or closure as claimed in claim 1 , wherein the haze of said composition is less than 25%.
9. A cap or closure as claimed in claim 1 , wherein the multimodal random propylene ethylene copolymer having an ethylene content of 3.3 to 6.5% wt.