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Silage Membrane Solutions

A technology of silage and multi-layer film, applied in the field of multi-layer film, can solve problems such as film rupture and equipment interference

Active Publication Date: 2022-07-05
SABIC GLOBAL TECH BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At such temperatures, migration of PIB tends to occur, which can then lead to film blocking (blocking) on, for example, rolls of film, thereby causing undesired loss of The frequency at which rupture of the membrane or disturbance of the equipment occurs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] Example 1. Films according to the invention were produced on a 5-layer coextrusion blown film line as described below.

[0109] Line description and process settings:

[0110] Number of extruders 5 number of layers 5 thickness 25μm BUR (Blow-Up Ratio) 2.5 die Gap: 2.4mm; diameter 550mm double ring Dual flow air ring, non-contact type air cooling temperature 15℃ ring 52% of total power IBC 60% power Line speed 61m / min output 352kg / h

[0111] Extruder temperature distribution (°C):

[0112] Extruder A Extruder B Extruder C Extruder D Extruder E Area 1 40 40 40 40 40 Zone 2 210 210 210 210 210 Zone 3 210 210 210 210 210 Zone 4 210 210 210 210 210 Zone 5 - - 210 - - filter 1 210 210 210 210 210 filter 2 210 210 210 210 210 filter 3 210 210 210 210 210

[0113] Die temperature distribution (°...

Embodiment 2

[0119] Example 2 (comparative). Films according to the prior art were produced on a 5-layer coextrusion blown film line as described below.

[0120] Line description and process settings:

[0121] Number of extruders 5 number of layers 5 thickness 25μm BUR (Blow-Up Ratio) 2.4 die Gap: 2.4mm; diameter 400mm double ring Dual flow air ring, non-contact type air cooling temperature 15℃ ring 51% of total power IBC 46% power Line speed 55m / min output 240kg / h

[0122] Extruder temperature distribution (°C):

[0123] Extruder A Extruder B Extruder C Extruder D Extruder E Area 1 40 40 40 44 40 Zone 2 199 186 210 187 198 Zone 3 210 210 210 210 210 Zone 4 210 210 210 210 210 Zone 5 210 210 210 210 210 Area 6 210 210 210 210 210 Area 7 210 210 210 210 210 Area 8 - 210 - 210 -

[0124] Die temperature distr...

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PUM

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Abstract

The present invention relates to a multilayer film comprising at least three layers, two outer layers and a core layer, wherein: the core layer contains 1-octene and has a value between >0.910 g / cm 3 with 0.925g / cm 3 An ethylene copolymer of a density between, wherein the additional first outer layer comprises a density between >0.915 g / cm 3 with 0.930g / cm 3 An ethylene homopolymer of a density between, wherein the additional second outer layer comprises the optional first ethylene copolymer and has a density between 0.850 g / cm 3 with <0.890g / cm 3 between the density of the second ethylene copolymer. Such films exhibit improved adhesion properties and additionally provide benefits in, inter alia, reduced migration of components from the film during storage and use at elevated temperatures.

Description

technical field [0001] The present invention relates to multilayer films, particularly for silage film applications, silage comprising said films and uses of said films. Background technique [0002] Films for silage film applications can be used to package silage. Films for silage film applications can be in particular stretch silage films and / or bunker silage films. Films for silage film applications can thus protect the contents, especially forage, for example for preferably at least 12 months. The stretched silage film may thus be an adhesive film, which may be used, in particular, for example for the protection and storage of preferably round or square bales of hay. [0003] Films for silage film applications are thus known, for example, from EP2286658, which describes films comprising two different ethylene-vinyl acetate based copolymers. [0004] Polyethylene-based films, in particular multilayer films, are generally used today, which contain a certain amount of po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/08B32B27/32C08F110/10C08L23/04A23K30/10A01F25/13B65D71/00
CPCB32B27/08B32B27/32B32B2250/03B32B2250/242B32B2307/50B32B2307/558B32B2307/72B32B2410/00B32B2553/00A01F25/13A23K30/10B32B2250/05
Inventor L·巴卡罗A·斯卡拉
Owner SABIC GLOBAL TECH BV
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