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Multilayer films and methods of making the same

A multi-layer thin film and outer layer technology, applied in chemical instruments and methods, coatings, layered products, etc., can solve problems such as decreased work efficiency

Active Publication Date: 2020-07-10
EXXONMOBIL CHEM PAT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, efficiently recycling laminate structures with polyamide substrates has been a challenge for the packaging industry
In addition, even with conventional PTFE tape, film manufacturers have had difficulty achieving a smooth and flat seal made of polyethylene laminate without having the welded rod stick to the laminate surface, which is not possible. avoiding a decrease in work efficiency

Method used

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  • Multilayer films and methods of making the same
  • Multilayer films and methods of making the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0138] Example 1 illustrates the tensile properties exhibited by an inventive laminate film sample (Sample 1) having an MDO substrate formulated as described herein, compared to a comparative sample of the same thickness having a polyamide substrate ( Sample 1a) compared. The polyethylene and additive products used in the samples included: PE-1 polymer (the first polyethylene described herein) (with bis(n-propylcyclopentadienyl) hafnium dichloride metallocene catalyst Prepared as further described in US Patent No. 6,956,088; Density: 0.916 g / cm 3 ;MI:0.50g / 10min;MIR:29.6;M w : 156,768; MWD: 3.3; M z / M w : 2.4) (ExxonMobil Chemical Company, Houston, Texas, USA), PE-2 polymer (second and third polyethylene described in this paper) (density: 0.940g / cm 3 ; MI: 0.25g / 10min; MIR: >60; MWD: ~4) (ExxonMobil Chemical Company, Houston, Texas, USA), EXXONMOBIL TM HDPE HTA 108HDPE resin (the fourth polyethylene described in this paper) (density: 0.961g / cm 3 ; MI: 0.70g / 10min) (Exx...

Embodiment 2

[0145] Another inventive film sample (Sample 2) was prepared with a sealant layer distribution of 1:3:1 and formulations of sealant outer layer and sealant core layer as shown in Table 2, but otherwise identical to Sample 1. Drop tests were performed on all three samples described in this article to compare drop test performance. Table 3 shows the test results and the non-breakage rate calculated therefrom.

[0146] Table 2: Formula by structure (wt %) and layer thickness of sample 2

[0147]

[0148] Table 3: Rupture Fraction (R 1-3 ) and the non-damage rate (R) calculated from it

[0149] sample number R 1

[0150] From Table 3 it can be seen that the drop test performance of the laminate structure is maintained at a comparable level, if not improved, by replacing the conventional polyamide substrate with the MDO substrate described herein, whether additionally in the sealant The first and second polyethylene compound sealants described herein are used in th...

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Abstract

Disclosed are multilayer films with at least one MDO substrate.

Description

[0001] CROSS REFERENCE TO RELATED APPLICATIONS This application claims the benefit of Serial No. 62 / 591,568 filed November 28, 2017, the disclosure of which is incorporated herein by reference in its entirety. [0002] field of invention [0003] The present invention relates to films, in particular to multilayer films comprising machine direction oriented (MDO) substrates, laminates comprising such films and methods for preparing such films. [0004] Background of the invention [0005] Stand up pouches (SUPs) are commonly known as pouches that can stand on a shelf for display to consumers, which have been developed to replace traditional rigid packaging such as bottles and cans used in the flexible packaging industry. SUPs have long been popular in the food, home or personal care markets and are also widely used as convenient refills for bottles. [0006] Laminate films are commonly used in industry to prepare SUPs with sufficient stiffness-related and toughness-related prop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/32C08J5/18B32B1/02
CPCB32B27/08B32B27/32B32B27/327B32B1/02B32B2250/05B32B2250/24B32B2250/246B32B2270/00B32B2307/31B32B2307/514B32B2307/516B32B2307/544B32B2307/546B32B2307/732B32B2439/06B32B2439/70B32B7/12B32B2250/03B32B2250/242B32B2255/26B32B2307/518B32B2307/558B32B2307/72B32B2307/7244B32B2307/7246B32B2323/04B32B2327/18
Inventor 彭昭杰
Owner EXXONMOBIL CHEM PAT INC