High-barrier biodegradable free-standing bag and preparation method thereof

A biodegradable, high-barrier technology, applied in biological packaging, chemical instruments and methods, bags, etc., can solve the problems of high cost, white pollution, difficult recycling, etc., and achieve low production cost, oxygen transmission rate and water vapor. The effect of low transmittance and simple preparation process

Active Publication Date: 2020-03-27
JIANGSU GOLDEN RAINBOW NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Technical problem to be solved: Aiming at the current situation that the existing non-degradable seal-type stand-up pouches are discarded in large quantities and cause serious "white pollution", recycling is difficult and the cost is high, the present invention provides a high-barrier biodegradable stand-up pouch and its preparation method, which The design principle idea is:

Method used

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  • High-barrier biodegradable free-standing bag and preparation method thereof
  • High-barrier biodegradable free-standing bag and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] (1) 5 parts of PLGA (repeating unit-OCH 2 CO-proportion is 80%, M W 100000), 70 parts of PPC, 25 parts of PBS, 1 part of poly(N-propionylethyleneimine), 0.5 parts of phthalic anhydride, 0.2 parts of erucamide, 0.5 parts of nano-silica, 0.3 parts of white oil After mixing evenly, add it to a parallel twin-screw extruder, melt blend and air-cool and pelletize to prepare a high-barrier biodegradable self-sealing strip modified material;

[0051] (2) Add the modified material of the high-barrier biodegradable self-sealing strip prepared in step (1) into the bone bar extruder to melt and extrude, water-cooled and shaped, and harvested into a high-barrier biodegradable self-sealing strip;

[0052] (3) Mix 92 parts of PBAT, 7 parts of organically modified montmorillonite, 1 part of hyperbranched polyester HyPer C181, and 0.3 part of white oil into a parallel twin-screw extruder, melt blend and air-cooled granules to prepare the bonding layer modified material;

[0053] (4) ...

Embodiment 2

[0058] (1) 10 parts of PLGA (repeating unit-OCH 2 CO- accounts for 90%, M W 200000), 60 parts of PPC, 30 parts of PBS, 1 part of poly(N-propionylethyleneimine), 0.5 parts of phthalic anhydride, 0.2 parts of erucamide, 0.5 parts of nano-silica, 0.3 parts of white oil After mixing evenly, add it to a parallel twin-screw extruder, melt blend and air-cool and pelletize to prepare a high-barrier biodegradable self-sealing strip modified material;

[0059] (2) Add the modified material of the high-barrier biodegradable self-sealing strip prepared in step (1) into the bone bar extruder to melt and extrude, water-cooled and shaped, and harvested into a high-barrier biodegradable self-sealing strip;

[0060] (3) Mix 92 parts of PBAT, 7 parts of organically modified montmorillonite, 1 part of hyperbranched polyester HyPer C181, and 0.3 part of white oil into a parallel twin-screw extruder, melt blend and air-cooled granules to prepare the bonding layer modified material;

[0061] (4)...

Embodiment 3

[0066] (1) 10 parts of PLGA (repeating unit-OCH 2 CO- accounts for 90%, M W 200000), 70 parts of PPC, 20 parts of PBS, 1 part of poly(N-propionylethyleneimine), 0.5 parts of phthalic anhydride, 0.2 parts of erucamide, 0.5 parts of nano-silica, 0.3 parts of white oil After mixing evenly, add it to a parallel twin-screw extruder, melt blend and air-cool and pelletize to prepare a high-barrier biodegradable self-sealing strip modified material;

[0067] (2) Add the modified material of the high-barrier biodegradable self-sealing strip prepared in step (1) into the bone bar extruder to melt and extrude, water-cooled and shaped, and harvested into a high-barrier biodegradable self-sealing strip;

[0068] (3) Mix 92 parts of PBAT, 7 parts of organically modified montmorillonite, 1 part of hyperbranched polyester HyPer C181, and 0.3 part of white oil into a parallel twin-screw extruder, melt blend and air-cooled granules to prepare the bonding layer modified material;

[0069] (4)...

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Abstract

The invention discloses a high-barrier biodegradable free-standing bag and a preparation method thereof. The free-standing bag is composed of two parts of a high-barrier biodegradable self-sealing strip and a five-layer composite high-barrier biodegradable bag body, the main substrate of the high-barrier biodegradable self-sealing strip is PLGA and PPC with excellent barrier property, the five-layer composite high-barrier biodegradable bag body is composed of single-light white kraft paper, a bonding layer, a first barrier layer, a second barrier layer and a heat seal layer, and is integrallyformed by adopting the four-layer co-extrusion and film-coating combined process. Compared with a traditional non-degradable free-standing bag, the prepared high-barrier biodegradable free-standing bag has the advantages that the physical mechanical property and the heat sealing performance are substantially equivalent, the barrier property is more excellent, biodegradation can be achieved, the problem of "white pollution" caused by waste of traditional free-standing bags is solved, and the application of the biodegradable plastic in the field of high-barrier food packaging is expanded, so that the high-barrier biodegradable free-standing bag has very important significance.

Description

technical field [0001] The invention belongs to the field of food packaging and relates to a seal type stand-up pouch, more specifically to a high-barrier biodegradable stand-up pouch and a preparation method thereof. Background technique [0002] The stand-up bag was first invented in 1963, and it was popularized from the United States in the 1990s, and has gradually been recognized around the world. Now it has penetrated into many corners of our lives. At present, stand-up pouches are mainly divided into five basic types: ordinary stand-up pouches, stand-up pouches with suction nozzles, sealed stand-up pouches, mouth-proof stand-up pouches and special-shaped stand-up pouches. Among them, stand-up bags with zippers are widely used in our life, such as nuts, candy, biscuits, jelly and other food packaging fields. [0003] The self-sealing stand-up pouch is composed of two main parts, the self-sealing strip and the multi-layer composite high-barrier bag body. The main mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D65/46B32B27/30B32B27/18B32B7/12B32B27/08B32B27/10B32B29/06B32B27/36B32B33/00
CPCB65D65/466B32B27/302B32B27/18B32B7/12B32B27/08B32B27/10B32B29/06B32B27/36B32B27/365B32B33/00B32B2307/7163B32B2307/7244B32B2307/7246B32B2439/70B29C48/92B29C48/08B29C48/914B29C48/21B29C48/49B29C48/022C08L69/00C08L2205/03C08L67/02C08L67/04B32B27/306B32B29/00B32B2439/06B32B2307/54B32B2307/732B32B2270/00B32B2307/31C08K3/22C08K5/092C08K5/20C08L79/02C08L91/00C08K3/34C08L67/00C08K5/10C08L31/04C08K5/09B29K2069/00B29K2105/0088B29K2995/006B65D33/2508B65D75/008C08G64/0208C08G2230/00
Inventor 司鹏刘志刚吴维果梁鹏李国方
Owner JIANGSU GOLDEN RAINBOW NEW MATERIAL CO LTD
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