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

Multilayer film for resealable packaging

A multi-layer film and thin-layer technology, applied in packaging, wrapping paper, transportation and packaging, etc., can solve the problems of unsuitable resealable packaging, etc.

Inactive Publication Date: 2018-10-19
BOSTIK SA
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This film is not suitable for the production of resealable packaging

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
  • Multilayer film for resealable packaging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] In the adhesive composition indicated in the table below, 0.5% of irganox® 1010 was added to it and prepared as a viscous liquid at 160°C by simply mixing the ingredients (using a twin-screw extruder) at that temperature.

[0083] MFI is shown in the table.

[0084] Measure the first opening force by peeling at 5°C:

[0085] A multilayer film including an adhesive layer composed of the composition is prepared in the following manner.

[0086] Approximately 8 g of the adhesive composition was placed on a square PET sheet with a side length of 15 cm and a thickness of 50 microns. Then apply a second PET sheet that is the same as the first PET sheet, and apply 100kg / cm on the assembly using a hydraulic press at a temperature of 120°C 2 Pressure for 2 minutes. The thickness of the adhesive layer in the multilayer film (monitored using a caliper) is approximately 250 microns.

[0087] A rectangular sample of 1 cm×10 cm was cut from the multilayer film thus obtained, and the sample ...

Embodiment 2-5

[0095] Example 1 was repeated using the contents shown in the table (for the ingredients of the composition).

[0096] The obtained first and second opening forces are also shown in the table.

Embodiment A

[0097] Example A (comparative):

[0098] Example 1 was repeated using a mixture of Kraton® D1111 and Kraton® D1113BT in the ratio indicated, so that the composition exemplified by application WO02 / 064694 was obtained.

[0099] It was observed that the first opening force of Examples 1 to 5 was reduced relative to Example A, indicating that the resealable package is easier to open. In addition, Examples 2 to 4 show a significant increase in the force of the second opening compared to Example A, which reflects that the quality of the resealing of the package (once opened) is improved.

[0100]

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
melt flow indexaaaaaaaaaa
softening pointaaaaaaaaaa
Login to View More

Abstract

The invention relates to: 1) a multilayer film including a layer having a thickness of between 7 and 300 [mu]m and consisting of a hot-melt pressure-sensitive adhesive composition having an MFI of 0.01 to 100 g / 10 minutes, said composition including: 40% to 70% of an SIS styrene block copolymer mixture having a styrene content of 10% to 16% and a diblock copolymer content of 50% to 90%; and 30% to60% of one or more tackifying resins having a softening temperature of between 5 DEG C and 140 DEG C; 2) a method for manufacturing said film by means of coextrusion; and 3) the use of said film formanufacturing resealable cartons.

Description

[0001] This application is a divisional application of the following applications: application date September 23, 2013, application number 201180056700.7, the title of the invention "multilayer film for resealable packaging". Technical field [0002] The subject of the present invention is a multilayer film comprising a layer composed of an extrudable hot-melt self-adhesive composition, a method for preparing the film and its use for producing resealable packages (or boat-shaped packaging boxes) ), especially for the packaging of food, especially perishable food. Background technique [0003] The sealable boat-shaped packaging box is used in the agro-food processing industry and mass sales for packaging perishable food, especially fresh products. Such packaging is described by patents and patent applications US4673601, EP1053952 and WO02 / 064694. [0004] After opening the package for the first time and a part of the food stored in it has been consumed, the user can manually reseal ...

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): C09J153/02C09J11/06C09J11/08B65D65/40B32B27/06B32B27/18B32B27/20
CPCB32B7/12B32B25/14B32B27/302C08L2205/02C09J153/02C08L53/02C08L2666/02C09J7/29C09J7/22C09J7/38B65D77/2096C09J153/025
Inventor C.诺特奥C.罗伯特
Owner BOSTIK SA
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