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Sealing strips and methods of use

A sealing strip, flat technology, applied in packaging and other directions, to achieve the effect of less failure, high efficiency and high productivity

Active Publication Date: 2021-07-06
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 winglet to the flexible film package

Method used

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  • Sealing strips and methods of use
  • Sealing strips and methods of use
  • Sealing strips and methods of use

Examples

Experimental program
Comparison scheme
Effect test

example

[0210] 1. Sealing strip

[0211] Flexible pouches are manufactured by heat sealing the fitment to a multilayer film using a seal strip device. The weatherstrip device has an opposed weatherstrip having such Figure 1 to Figure 4 The structure of the sealing strip 10, 210 shown in . Each weather strip satisfies Equation (1) and Equation (2), in which the following values ​​are shown in Table 2 below.

[0212] Table 2

[0213]

[0214] Flexible multilayer films having the structures shown in Table 3 below were used in the inventive examples.

[0215] 2. Multilayer film

[0216] Table 3. Composition of flexible multilayer film (Film 1) laminated multilayer film

[0217]

[0218] 3. Accessories

[0219] Nine comparative samples (CS) and four inventive examples (IE) of fittings were prepared. The dimensions of each fitting are the same, and the only difference between the fittings is the material. CS fittings consist of 100wt% INFUSE 9817. The accessory of the presen...

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Abstract

The present disclosure provides a weather strip. In an embodiment, the weather strip comprises a base member having a flat front surface and a flat concave surface a distance (d) behind said front surface. The front surface defines an x-axis, X. The flat concave surface has a first end point (A1), wherein an axis perpendicular to the flat concave surface defines a first y-axis (Y1) at the first end point (A1). The weatherstrip has a concave surface extending a distance (d) between said first end point (A1) and a point (B1) on said flat front surface. Said concave surface delimits a sector arc of an ellipse between said first end point (A1) and said point (B1).

Description

technical field [0001] The invention relates to a weatherstrip, a weatherstrip device and a method for sealing a flexible fitting between two flexible membranes. Background technique [0002] Flexible pouches with rigid pour spouts are known for storing and delivering flowable materials, often referred to as "pour-pouches". Many conventional pouring sachets utilize rigid pouring spouts where the base of the spout has winglets. Each winglet is a structure perpendicular to the base, each winglet extending radially (in opposite directions) from the annular base of the spout. The winglets serve to increase the surface area of ​​the annular base in order 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 winglet to the flexible film package. The specialized heat seal strip requires a unique shape that matches the shape of the spout base and w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C65/18B29C65/04B29C65/08B29C65/72B29K23/00B29K96/04
CPCB29C65/08B29C65/18B29C65/72B29C66/1122B29C66/53262B29C66/71B29C66/73921B29C66/81423B29C66/81431B29C66/83221B29C65/04B29K2023/08B29K2023/00B29K2096/04B29K2023/0633B29K2023/065B29K2023/0625B29K2067/003B29K2077/00B29K2023/12B29K2023/0616B65B61/186B65B61/20B65D75/5883
Inventor 马良凯S·L·克拉布特里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
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