COLLATION SHRINK FILM

1 . A multilayer collation shrink film comprising at least the following layers:

A) a layer comprising at least the following components:

a1) a multimodal polymer of ethylene with at least two different comonomers selected from alpha-olefins having from 4 to 10 carbon atoms, which multimodal polymer of ethylene has a density in the range from 910 to 935 kg/m 3 , and a Mw/Mn of 2 to 8;

a2) a multimodal terpolymer of ethylene and two alpha-olefin comonomers wherein the multimodal terpolymer has a density in the range from 930 to 950 kg/m 3 and a Mw/Mn of 10 to 20; and

a3) LDPE;

B) a layer comprising at least the following components:

b1) recycled LDPE; and

b2) a multimodal terpolymer of ethylene and two alpha-olefin comonomers wherein the multimodal terpolymer has a density in the range from 930 to 950 kg/m 3 and a Mw/Mn of 10 to 20.

2 . The multilayer collation shrink film according to claim 1 , wherein, the multilayer film contains at least 3 layers.

3 . The multilayer collation shrink film according to claim 1 , wherein

the content of component a1) in layer A) is in the range from 5 to 25 wt.-%. based on the overall weight of layer A); and/or

the content of component a2) in layer A) is in the range from 5 to 25 wt.-% based on the overall weight of layer A); and/or

the content of component a3) in layer A) is in the range from 50 to 90 wt.-% based on the overall weight of layer A);

wherein the weight proportions of components (a1) to (a3) add up to 100 wt.-%.

4 . The multilayer collation shrink film according to claim 1 , wherein

the content of component b 1) in layer B) is in the range from 60 to 95 wt.-% based on the overall weight of layer B); and/or

the content of component b2) in layer B) is in the range from 5 to 40 wt.-% based on the overall weight of layer B);

wherein the weight proportions of components (b1) and (b2) add up to 100 wt.-%.

5 . The multilayer collation shrink film according to claim 1 , wherein

the components according to layer A) and/or B) comprise additives, preferably selected from the group consisting of slip agents, UV-stabilizer, pigments, antioxidants, nucleating agents and mixtures thereof, wherein these additives are contained in an amount from 0 to 5000 ppm based on the overall weight of the respective layer; and/or

the components according to layer A) and/or B) comprise admixtures selected from the group consisting of pigments, fillers, antiblocking agents and mixtures thereof, wherein these admixtures are contained in an amount from 0 to 5 wt.-% based on the overall weight of the respective layer.

6 . The multilayer collation shrink film according to claim 1 , wherein layer A) consists of components a1) to a3) and these component optionally contain additives and/or layer B) consists of components b1) to b2) and these components optionally contain additives.

7 . The multilayer collation shrink film according to claim 1 , wherein component a1) has one or more of the following technical features:

MFR 2 of 0.5 to 10 g/10 min (according to ISO 1133 at 190° C. under 2.16 kg load);

MFR 21 /MFR 2 of 13 to 35 (MFR 21 at 190° C. under 21.6 kg load);

MWD in the range from 2 to 7.

8 . The multilayer collation shrink film according to claim 1 , wherein component a1) comprises 1-butene and 1-hexene.

9 . The multilayer collation shrink film according to claim 1 , wherein component a2) and/or b2) has one or more of the following technical features:

the two alpha-olefin comonomers are C4 to 10 alpha-olefins;

the multimodal terpolymer has an MFR21 of 5.0 to 200 g/10 min determined according to ISO 1133;

the multimodal terpolymer comprises

i. a lower molecular weight fraction being a polyethylene homopolymer and

ii. a higher molecular weight fraction being a terpolymer of ethylene and at least two alpha-olefin comonomers having 4 to 10 carbon atoms;

the multimodal terpolymer has a MFR 21 in the range of 15.0 to 50.0 g/10 min;

the FRR21/5 of the multimodal terpolymer is in the range from 10.0 to 50.0;

Mw/Mn is in the range from 14 to 18;

the density is in the range from 930 to 940 kg/m 3 and the Mw/Mn in the range of 10 to 20 .

10 . The multilayer collation shrink film according to claim 1 , wherein component a3)

is a homopolymer; and/or

is a virgin polymer; and/or

has a MFR 2 in the range from 0.10 to 20 g/10 min; and/or

has a density in the range from 905 to 940 kg/m 3 .

11 . The multilayer collation shrink film according to claim 1 , wherein component b1)

originates from post consumer waste; and/or

has a MFR 2 in the range from 0.1 to 10 g/10 min; and/or

a density in the range from 910 to 945 kg/m 3 .

12 . The multilayer collation shrink film according to claim 1 , wherein the film has one or more of the following properties:

a tensile stress at 15% strain in the range from 7.5 to 17.5 MPa; and/or

a shrinkage in machine direction in the range from 60 to 80%; and/or

a shrinkage in cross direction in the range from 20 to 30%; and/or

a retraction force in the range from 0.5 to 1.5 kg/cm 2 ; and/or

a contraction force in the range from 15 to 25 kg/cm 2 ; and/or

layer A) has a thickness in the range from 2 to 25 μm; and/or

layer B) has a thickness in the range from 10 to 100 μm; and/or

the overall film thickness is in the range from 15 to 150 μm.

13 . The multilayer collation shrink film according to claim 1 , wherein the film consists of a core layer B) sandwiched by two outer layers A), wherein

both outer layers A) consist of

a1) 12 to 18 wt.-% of a multimodal polymer of ethylene with at least two different comonomers selected from alpha-olefins having from 4 to 10 carbon atoms, which multimodal polymer of ethylene has a density in the range from 910 to 935 kg/m 3 , and a Mw/Mn of 2 to 8;

a2) 12 to 18 wt.-% of a multimodal terpolymer of ethylene and at least two alpha-olefin comonomers wherein the multimodal terpolymer has a density in the range from 930 to 940 kg/m 3 ; and

a3) 64 to 76 wt.-% of a LDPE homopolymer being a virgin polymer having a density in the range from 905 to 940 kg/m 3 and an MFR 2 in the range from 0.1 to 20 g/10 min; and

core layer B) consists of

b1) 65 to 75 wt.-% of recycled LDPE having a MFR 2 in the range from 0.1 to 10 g/10 min and a density in the range from 910 to 940 kg/m 3 ; and

b2) 35 to 25 wt.-% of a multimodal terpolymer of ethylene and at least two alpha-olefin comonomers wherein the multimodal terpolymer has a density in the range from 930 to 940 kg/m 3 .

14 . A method for manufacturing a film according to claim 1 , wherein the film is manufactured by a one-step blown film coextrusion process.

15 . (canceled)

16 . (canceled)

17 . The multilayer collation shrink film according to claim 2 , wherein the multilayer film consists of 3 layers wherein layer B) forms the core layer and is sandwiched by two outer layers A).

18 . The multilayer collation shrink film according to claim 17 , wherein both outer layers A) consist of identical components and are the same.

19 . The multilayer collation shrink film according to claim 8 , wherein component a1) comprises 1-butene and 1-hexene.

20 . The multilayer collation shrink film according to claim 19 , wherein component a1) is a terpolymer comprising an ethylene butene copolymer (i) and an ethylene hexene copolymer (ii), wherein butene/hexene are the only comonomers present in the respective component.

21 . The multilayer collation shrink film according to claim 9 , wherein components a2) and b2) are identical.