Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

POSS (polyhedral oligomeric silsesquioxanes) modified high barrier three-layer co-extrusion packaging film and preparation method thereof

A three-layer co-extrusion and packaging film technology, which is applied in the field of packaging films, can solve the problems affecting the barrier properties of films, LLDPE and EVOH incompatibility, etc., to improve mechanical properties and heat resistance, ensure transparency, and improve barrier properties Effect

Active Publication Date: 2011-04-20
XIAMEN UNIV +1
View PDF9 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wu Yanqiu et al. (Chinese invention patent, publication number: CN101323685A, blended film of linear low density polyethylene and ethylene-vinyl alcohol copolymer and its production method) solved the incompatibility of LLDPE and EVOH. The problem of adding an adhesive layer between
However, since polyvinyl alcohol is a hydrophilic film, it will absorb water, which will affect the barrier properties of the film.

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
  • POSS (polyhedral oligomeric silsesquioxanes) modified high barrier three-layer co-extrusion packaging film and preparation method thereof
  • POSS (polyhedral oligomeric silsesquioxanes) modified high barrier three-layer co-extrusion packaging film and preparation method thereof
  • POSS (polyhedral oligomeric silsesquioxanes) modified high barrier three-layer co-extrusion packaging film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Step 1: In a flask filled with high-purity nitrogen, add (i-C 4 h 9 ) 7 Si 8 o 9 (OH) 3 7.119g, THF 25ml and Et 3 N 2.732g, then slowly inject n-alkyltrichlorosilane CH 3 (CH 2 ) n CH 2 SiCl 3 (n=1) 1.598 g. After stirring overnight, it was filtered, and the filtrate was rotovapped to obtain a pale yellow solid powder. Crystallize in a solution of toluene and acetonitrile to obtain a POSS modifier, and dry it in vacuum at 50°C for 12 hours before use.

[0028] Step 2: Put LDPE, LLDPE, and POSS modifiers into the blender according to the ratio of 10:87:3 and mix them evenly, then use a twin-screw extruder to melt and extrude to pelletize, and the heating temperature in the 9th zone is 170, 180 , 200, 210, 210, 200, 190, 190, 180°C. The prepared masterbatch is dried under vacuum condition, and the POSS content in the masterbatch is 3%. .

[0029] Step 3: Mix the middle layer (EVOH:PE-g-MAH=85:15) and the inner layer (LDPE:LLDPE:oleic acid amide=20:79:1) in ...

Embodiment 2

[0032] Step 1: In a flask filled with high-purity nitrogen, add (i-C 4 h 9 ) 7 Si 8 o 9 (OH) 3 7.910g, THF 30ml and Et 3 N 3.036g, then slowly inject n-alkyltrichlorosilane CH 3 (CH 2 ) n CH 2 SiCl 3 (n=4) 2.195 g. After stirring overnight, it was filtered, and the filtrate was rotovapped to obtain a pale yellow solid powder. Crystallize in a solution of toluene and acetonitrile to obtain a POSS modifier, and dry it in vacuum at 70°C for 12 hours before use.

[0033] Step 2: Same as Example 1.

[0034] Step 3: Mix the middle layer (EVOH: PE-g-MAH=90:10) and the inner layer (LDPE: LLDPE: oleic acid amide = 10:89:1) in a blender, and then mix them with the outer masterbatch ( LDPE:LLDPE:POSS modifier=10:87:3) co-extruded and casted by a three-layer co-extrusion cast film machine to obtain a POSS modified high-barrier three-layer co-extruded packaging film with a film thickness of 60 μm.

[0035] Step 4: After placing the sample at room temperature for 3 days, test ...

Embodiment 3

[0037] Step 1: In a flask filled with high-purity nitrogen, add (i-C 4 h 9 ) 7 Si 8 o 9 (OH) 3 8.701g, THF 30ml and Et 3 N 3.340g, then slowly inject n-alkyltrichlorosilane CH 3 (CH 2 ) n CH 2 SiCl 3 (n=6) 2.732 g. After stirring overnight, it was filtered, and the filtrate was rotovapped to obtain a pale yellow solid powder. Crystallize in a solution of toluene and acetonitrile to obtain a POSS modifier, and dry it in vacuum at 70°C for 12 hours before use.

[0038] Step 2: Put LDPE, LLDPE, and POSS modifier into a mixer at a ratio of 20:74:6 and mix evenly, and the POSS content in the masterbatch is 6%. Then use a twin-screw extruder to melt-extrude and granulate, and the heating temperatures in zone 9 are 180, 200, 220, 220, 220, 210, 210, 200, and 190°C, respectively. The prepared masterbatch is dried under vacuum conditions.

[0039] Step 3: Mix the middle layer (EVOH: PE-g-MAH=85:15) and the inner layer (LDPE: LLDPE: oleic acid amide = 10:89:1) in a blender...

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
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a POSS (polyhedral oligomeric silsesquioxanes) modified high barrier three-layer co-extrusion packaging film and a preparation method thereof, relating to a packaging film. The invention provides a polyhedral oligomeric silsesquioxanes modified high barrier three-layer co-extrusion packaging film with better barrier property, mechanical property, heat resistance and transparency and a preparation method thereof. The film comprises an outer layer, an intermediate layer and an inner layer, wherein the outer layer of the film comprises the components of low-density polyethylene, linear low-density polyethylene and a polyhedral oligomeric silsesquioxanes modifier, the intermediate layer of the film comprises the components of ethylene-vinyl alcohol copolymer and compatibilizing resins, and the inner layer of the film comprises the components of LDPE, LLDPE and an opening agent. Firstly, the polyhedral oligomeric silsesquioxanes modifier is prepared, then the outer layer film master batch containing the polyhedral oligomeric silsesquioxanes modifier is prepared, and finally the polyhedral oligomeric silsesquioxanes modified high barrier three-layer co-extrusion packaging film is prepared.

Description

technical field [0001] The invention relates to a packaging film, in particular to a high-barrier three-layer co-extrusion packaging film modified by polyhedral oligomeric silsesquioxane (POSS) and a preparation method thereof. Background technique [0002] With the development of science and technology and the improvement of living standards, people have put forward various new requirements for packaging materials. In the field of food packaging, packaging materials are required to have high barrier properties to oxygen, carbon dioxide and water in order to extend the shelf life of food. At present, there are many packaging techniques and methods in actual use, including vacuum packaging, inflatable packaging, moisture-proof packaging, deoxygenation packaging, self-adjusting atmosphere packaging, etc., all of which are inseparable from barrier film packaging materials. So far, although there are many varieties of barrier packaging films, including composite films, they sti...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/18C08L23/08C08L23/06C08K5/549B65D65/40
Inventor 戴李宗蒋斌杰罗宇峰罗伟昂许一婷
Owner XIAMEN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com