High-strength tear-resistant PE (polyethylene) film as well as preparation method and application thereof

A density and medium density technology, applied in the field of packaging materials, can solve the problems of large loss and labor, and achieve the effect of high tensile strength and good tear resistance

Pending Publication Date: 2022-04-29
珠海市德燊环保包装有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the eight-side seal bag is used as a ramen bag, because the packaged noodles are larger and there are many types of seasonings, many food packaging factories usually can only use manual packaging.
When workers pack ramen noodl

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-strength tear-resistant PE (polyethylene) film as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031] Example 1

[0032] This embodiment provides a PE film with high strength and tear resistance, which sequentially comprises an inner layer, a middle layer and an outer layer, and the thicknesses of each layer are 15μm, 30μm and 15μm respectively.

[0033] The inner layer comprises the following raw materials in parts by weight: 43.2 parts of linear low density polyethylene, 20 parts of low density polyethylene, 35 parts of first metallocene polyethylene, 1.5 parts of opening agent and 0.3 parts of polyphthalamide (PPA);

[0034] The middle layer comprises the following raw materials in parts by weight: 19.5 parts of second metallocene polyethylene, 30 parts of medium density polyethylene, 50 parts of high density polyethylene and 0.5 part of polyphthalamide (PPA);

[0035] The outer layer comprises the following raw materials in parts by weight: 29.5 parts of second metallocene polyethylene, 50 parts of medium density polyethylene, 20 parts of low density polyethylene and 0....

Example Embodiment

[0049] Example 2

[0050] This embodiment provides a PE film with high strength and tear resistance, which sequentially comprises an inner layer, a middle layer and an outer layer, and the thicknesses of each layer are 15μm, 30μm and 15μm respectively.

[0051] The inner layer comprises the following raw materials in parts by weight: 43 parts of linear low density polyethylene, 20 parts of low density polyethylene, 35.3 parts of first metallocene polyethylene, 1.5 parts of opening agent and 0.2 part of polyphthalamide (PPA);

[0052] The middle layer comprises the following raw materials in parts by weight: 19 parts of second metallocene polyethylene, 30.5 parts of medium density polyethylene, 50 parts of high density polyethylene and 0.5 part of polyphthalamide (PPA);

[0053] The outer layer comprises the following raw materials in parts by weight: 29 parts of second metallocene polyethylene, 50 parts of medium density polyethylene, 20 parts of low density polyethylene and 0.5 p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Densityaaaaaaaaaa
Melt indexaaaaaaaaaa
Densityaaaaaaaaaa
Login to view more

Abstract

The invention belongs to the technical field of packaging materials, and discloses a high-strength tear-resistant PE (polyethylene) film as well as a preparation method and application thereof. The PE film sequentially comprises an inner layer, a middle layer and an outer layer, the inner layer comprises the following raw materials: linear low-density polyethylene, low-density polyethylene and first metallocene polyethylene; the middle layer comprises the following raw materials: second metallocene polyethylene, medium density polyethylene and high density polyethylene; the outer layer comprises the following raw materials: second metallocene polyethylene, medium-density polyethylene and low-density polyethylene; the density of the first metallocene polyethylene is 0.916 to 0.920 g/cm < 3 >, and the melt index of the first metallocene polyethylene is 0.9 to 1.1 g/10min; and the density of the second metallocene polyethylene is 0.925-0.929 g/cm < 3 >, and the melt index is 1.2-1.4 g/10 min. The PE film has excellent longitudinal and transverse tensile strength, has the characteristic of tear resistance, and can be applied to preparation of high-strength packaging bags.

Description

technical field [0001] The invention belongs to the technical field of packaging materials, and in particular relates to a high-strength, tear-resistant PE film and its preparation method and application. Background technique [0002] At this stage, polyethylene film (PE film) has been widely used in product packaging due to its moisture resistance, low moisture permeability, low cost, and good packaging effect. However, in order to protect the products in the package and achieve a better packaging effect, the PE film is usually required to have a certain strength, but the tensile strength of the enhanced PE film on the existing market is generally around 25MPa, although it can meet large The packaging requirements of some products, but cannot meet the packaging requirements of some specific products. [0003] For example, the eight-side seal bag made of PE film has been widely used in the field of light solid packaging such as candy and biscuits because of its good upright...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B32B27/32B32B27/06B65D65/40B29D7/01
CPCB32B27/32B32B27/08B65D65/40B29D7/01B32B2250/242B32B2307/51B32B2307/5825B32B2439/06
Inventor 苏壮李可金
Owner 珠海市德燊环保包装有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap