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

Preservative film

A technology of plastic wrap and vinylidene chloride, which is applied in the field of plastic wrap, can solve the problems of reduced productivity and perforation, and achieve the effects of less frequency of occurrence, excellent cutting performance, and suppression of cracking failures

Active Publication Date: 2021-03-26
ASAHI KASEI KK
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When subsequent stretching is performed, for example, when inflation film formation is performed, the inflation may cause perforation starting from the inclusions and lower productivity (for example, refer to Patent Document 1).

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
  • Preservative film
  • Preservative film
  • Preservative film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0217] 91.3 parts by mass of vinylidene chloride-based resin with a weight average molecular weight of 90,000 (vinylidene chloride repeating unit is 88 mol%, vinyl chloride repeating unit is 12 mol%), acetyl tributyl citrate (Taoka Chemical Industry Co., Ltd.) 8.1 parts by mass and 0.6 parts by mass of epoxidized soybean oil (Newcizer 510R, NOF Corporation) were mixed for 5 minutes with a Henschel mixer. After mixing, the mixture is aged for more than 24 hours to obtain a composition.

[0218] The obtained composition was supplied to a melt extruder and melted, and melted and extruded from an annular die attached to the front end of the extruder to form a soaking portion. At this time, the heating conditions of the extruder were adjusted so that the temperature of the molten resin at the branch outlet of the ring die was 170° C., and a ring shape was extruded at an extrusion rate of 10 kg / hr.

[0219] After it is cooled in the soaking liquid and cold water tank, the parison i...

Embodiment 2～6、 comparative example 1～7

[0222] Except having changed into each condition shown in Table 1, it carried out similarly to Example 1, and obtained the wound body of the wrap film of Examples 2-6 and Comparative Examples 1-7. Each evaluation was performed using the roll body of the obtained wrap film.

[0223]

[0224] ※ATBC: Acetyl tributyl citrate

[0225] DBS: dibutyl sebacate

[0226] DALG: Diacetyllauroylglycerin

[0227] ESO: Epoxidized soybean oil

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

No PUM Login to View More

Abstract

The purpose of the present invention is to provide a preservative film which has a low occurrence frequency of breakage, is suppressed in cracking failure, and has excellent machinability. The preservative film contains a vinylidene chloride resin and at least one compound selected from the group consisting of citric acid esters, dibasic acid esters and acetylated fatty acid glycerides, and wherein: the vinylidene chloride resin contains 72-93 mol% of vinylidene chloride repeating units; the content of the compound is greater than 8 wt% and 19 wt% or less relative to the total amount of the preservative film, and the tear strength of the preservative film in the TD direction is 2.0 cN to 4.2 cN.

Description

technical field [0001] The present invention relates to plastic wrap. Background technique [0002] Wrapping films made of vinylidene chloride-based resins have excellent oxygen barrier properties, water vapor barrier properties (moisture resistance), and transparency, and can be heated in microwave ovens, so they are widely used for fresh fish for the purpose of oxygen barrier and moisture protection. , raw meat, processed meat, fresh vegetables, non-staple food, etc. [0003] As vinylidene chloride-based resins for forming cling film, vinylidene chloride, vinyl chloride, etc., which can be copolymerized with vinylidene chloride, are generally used in terms of film extrusion processability, crystallinity, transparency, and softening temperature A vinylidene chloride copolymer obtained by copolymerizing other monomers. [0004] A wrap film made of a vinylidene chloride-based resin is usually produced by melt-extruding a vinylidene chloride-based resin, followed by stretchi...

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): C08L27/08C08L91/00C08K5/11C08K5/103C08J5/18
CPCC08J5/18C08J2327/08C08J2491/00C08K5/11C08K5/103
Inventor 田中达夫田中利采
Owner ASAHI KASEI KK
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