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Flexible fittings for flexible containers

A technology for flexible containers and accessories, which is applied in the field of flexible containers and can solve problems such as small wings

Active Publication Date: 2021-02-12
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, winglets are problematic because they require specialized heat seal strips to effectively seal the winglets to the flexible film package

Method used

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  • Flexible fittings for flexible containers
  • Flexible fittings for flexible containers
  • Flexible fittings for flexible containers

Examples

Experimental program
Comparison scheme
Effect test

example

[0175] Flexible multilayer films having the structures shown in Table 2 below were used in the inventive examples.

[0176] 1. Multilayer film

[0177] Table 2 - Composition of flexible multilayer films (Film 1)

[0178] laminated multilayer film

[0179]

[0180] 2. Accessories

[0181] Assemblies of nine comparative samples (CS) and four inventive examples (IE) were prepared. The dimensions of each fitting are the same, with only the material changing in all fittings. CS accessories are constructed of 100% by weight INFUSE9817. The accessories of the present invention consist of 70% by weight of INFUSE 9817 and 30% by weight of DMDC-1250NT 7HDPE. Each fitting had a bottom wall thickness of 0.8 mm, and a base inner diameter of 12.5 mm, and a base outer diameter of 14.1 mm.

[0182] The materials and compositions used for the fittings are shown in Table 3 below.

[0183] Table 3 - Accessories Materials

[0184]

[0185] 3. Processing conditions

[0186] Each fit...

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Abstract

The present disclosure provides a flexible container. In an embodiment, said flexible container (8) comprises a first multilayer film (16) and a second multilayer film (18). Each multilayer film includes a sealing layer. The multilayer films are arranged such that the sealing layers are opposed to each other and the second multilayer film (18) is superimposed on the first multilayer film (16). The multilayer films are sealed along a common peripheral edge (20). The flexible container (8) comprises a fitting (10). The accessory (10) comprises a base (12). The substrate (12) comprises a polymeric blend of 60% to 90% by weight ethylene / α-olefin multi-block copolymer and 40% to 10% by weight high density polyethylene (HDPE). The flexible container (8) includes a fitting seal (22) comprising the substrate (12) between the multilayer films. The substrate (12) is sealed to each multilayer film at a portion of the common peripheral edge (20).

Description

Background technique [0001] The present disclosure relates to a flexible container having a flexible fitting. [0002] Flexible bags having rigid pouring spouts for storing and delivering flowable materials, commonly referred to as "pour bags", are known. Many conventional pouring bags utilize rigid pouring spouts in which the base of the spout has winglets. Each winglet is a structure perpendicular to the base, each winglet extending radially away (in the opposite direction) from the annular base of the spout. The winglets are used to increase the surface area of ​​the annular base to promote adhesion between the spout and the flexible packaging film. [0003] However, winglets are problematic because they require specialized heat seal strips to effectively seal the winglets to the flexible film package. Specialty heat seal strips require a unique shape that matches the shape of the spout base and winglets. In addition, the heat sealing process requires precise and matche...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D75/58
CPCB65D75/5883B65D47/122B65D75/5861
Inventor 马良凯S·L·卡佩瑞J·C·戈梅斯M·H·米尔戈贡M·S·布莱克M·O·拉博内维尔M·J·特平M·J·希思C·M·塞勒L·A·万舒姆雷恩N·C·马佐拉
Owner DOW GLOBAL TECH LLC