Film
OwnerHans Georg Daviknes, Ole Jan Myhreinventors
Life of this patent
Estimating the term…
Abstract
The present invention provides a uniaxially oriented multilayer film comprising at least (i) a layer (A) and (ii) a layer (B), wherein said layer (A) comprises a linear low density polyethylene (LLDPE) comprising (e.g. selected from):—a multimodal LLDPE produced using a Ziegler Natta catalyst (znLLDPE), or—a LLDPE produced using a single site catalyst (mLLDPE) or—a mixture of a mLLDPE and a multimodal znLLDPE, said layer (B) comprises a multimodal LLDPE, and said multilayer film is in the form of a stretched film which is uniaxially oriented in the machine direction (MD) in a draw ratio of at least 1:3.
Claims24
1-22. (canceled)
A uniaxially oriented multilayer film comprising at least (i) a layer (A) and (ii) a layer (B), wherein said layer (A) comprises a linear low density polyethylene (LLDPE) comprising:
- a multimodal LLDPE produced using a Ziegler Natta catalyst (znLLDPE), or
- a LLDPE produced using a single site catalyst (mLLDPE) or
- a mixture of a mLLDPE and a multimodal znLLDPE,
- said layer (B) comprises a multimodal LLDPE, and
- said multilayer film is in the form of a stretched film which is uniaxially oriented in the machine direction (MD) in a draw ratio of at least 1:3.
A process for the preparation of a multilayer film of claim 1, comprising forming a film by extruding a composition (a) comprising a multimodal znLLDPE, a mLLDPE or a mixture thereof as layer (A), a composition (b) comprising a multimodal LLDPE as layer (B), and optionally, a composition (c) comprising a LLDPE as layer (C), and stretching said film in the machine direction in a draw ratio of at least 1:3.
Dependencies are inferred from the claim text.