Unlock instant, AI-driven research and patent intelligence for your innovation.

Biodegradable preservative film with controlled atmosphere function and preparation method thereof

A biodegradable, fresh-keeping film technology, applied in the field of packaging materials, can solve the problems of white pollution and non-degradable fresh-keeping film materials, and achieve the effects of no loss of raw materials, easy industrial scale production, and low cost.

Pending Publication Date: 2021-07-23
吉林省中亿医药包装有限公司
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem mainly solved by the present invention: Aiming at the non-degradable traditional plastic wrap materials, which will cause white pollution after being discarded, a biodegradable atmosphere-modified functional plastic wrap and its preparation method are proposed. The present invention combines biodegradable resin , stabilizer, compatibilizer, calcium carbonate, and vegetable oil are evenly mixed, then granulated and cast to form a film, which can completely eliminate white pollution

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 3 parts of polylactic acid (PLA), 97 parts of polybutylene terephthalate-adipate (PBAT), 3 parts of nano-calcium carbonate, 1 part of zinc stearate, 3 parts of DuPont compatibilizer, white oil Add 2 parts into the mixer, and stir at a low speed for 8 minutes at 20°C to obtain a mixture; put the mixture into a twin-screw granulator, extrude, pull strands, cut into pellets, and then put the pellets into the flow casting Machine extrusion, casting, film forming, winding to get the plastic wrap.

Embodiment 2

[0020] 100 parts of polybutylene terephthalate-adipate (PBAT), 5 parts of polycaprolactone, 2 parts of nano calcium carbonate, 1.5 parts of barium stearate, 2.5 parts of DuPont compatibilizer, rapeseed oil Add 2 parts into the mixer, and stir at a low speed for 8 minutes at 20°C to obtain a mixture; put the mixture into a twin-screw granulator, extrude, pull strands, cut into pellets, and then put the pellets into the flow casting Machine extrusion, casting, film forming, winding to get the plastic wrap.

Embodiment 3

[0022] 5 parts of polylactic acid (PLA), 20 parts of polymethylethylene carbonate (PPC), 70 parts of polybutylene terephthalate-adipate (PBAT), 5 parts of polycaprolactone, stearin Add 1.5 parts of zinc oxide, 1.5 parts of Dupont compatibilizer, and 2 parts of linseed oil into the mixer, and stir at a low speed for 8 minutes at 20°C to obtain a mixture; put the mixture into a twin-screw granulator, extrude, Stranding, pelletizing, and then putting the pellets into a tape casting machine for extrusion, casting, film forming, and winding to obtain a plastic wrap.

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 invention aims to provide a biodegradable preservative film with a controlled atmosphere function and a preparation method thereof, and is used for solving the problems that the current traditional preservative film material is non-degradable and can cause white pollution after being discarded. The biodegradable resin, the stabilizer, the compatilizer, the calcium carbonate and the vegetable oil are uniformly mixed, granulated and cast into a film, and white pollution can be completely eradicated. The biodegradable preservative film is prepared from the following raw materials in parts by weight: 80 to 95 parts of degradable polymer, 2 to 6 parts of nano calcium carbonate, 1 to 4 parts of stabilizer, 1 to 2 parts of compatilizer and 1 to 5 parts of vegetable oil. The biodegradable preservative film with the controlled atmosphere function has excellent mechanical properties and fruit and vegetable and food preservation performance, and can be completely degraded without toxicity and harm after being used and discarded. The preparation method is simple in process, low in cost and convenient for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of packaging materials, and relates to a fully biodegradable modified atmosphere preservation film prepared from biodegradable polymers and natural polymer fillers as raw materials and a preparation method thereof, in particular to a biodegradable function modified atmosphere preservation film and The preparation method belongs to the technical field of packaging materials. Background technique [0002] The "white pollution" and "marine microplastics" caused by the use of traditional petroleum-based materials have become the main environmental problems facing human society. The biodegradable modified atmosphere cling film can discharge the harmful gas or the gas that accelerates the decay of the wrapped food, fruits and vegetables, and can effectively prevent the outside air from entering the food, fruits and vegetables, so as to prolong the preservation period of food, fruits and vegetables. It can be comp...

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): C08L67/02C08L67/04C08L91/06C08K3/26C08K5/098C08J5/18C08L91/00C08L69/00C08K5/57C08K13/02C08K5/09
CPCC08J5/18C08J2367/02C08J2467/04C08J2491/06C08K2003/265C08K2201/011C08K5/098C08J2491/00C08J2469/00C08J2467/02C08K5/57C08K13/02C08K5/09
Inventor 生刚王自庆马胜来马丽颖马福浩孙英杰
Owner 吉林省中亿医药包装有限公司