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A kind of preparation method of multi-layer composite polymer packaging material

A packaging material and multi-layer composite technology, applied in the field of food packaging materials, can solve the problems of performance impact, performance reduction, and no further consolidation of performance, and achieve the effect of strengthening blocking performance and excellent gas.

Active Publication Date: 2017-09-15
DALIAN JUTONG PLASTIC PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Second, the processing performance of EVOH is not ideal. Generally, it needs to be modified or coated with a binder on the surface of EVOH film before it can be combined with other polymer materials. This is a problem that needs to be improved.
[0010] The technical solution is based on degradability as the technical breakthrough point. PP / EVOH composite multilayer film can also be used as food packaging materials. The addition of biologically active hydrophilic groups will undoubtedly have an impact on the barrier properties of EVOH, and this Performance is the most notable performance of EVOH. This technical solution not only does not further consolidate this performance, but reduces it. Therefore, although this solution has certain biodegradability, its own performance is affected

Method used

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  • A kind of preparation method of multi-layer composite polymer packaging material
  • A kind of preparation method of multi-layer composite polymer packaging material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A preparation method of a multilayer composite high polymer packaging material, comprising the steps of:

[0037] The 1st step, the preparation of modified PET: get polyethylene terephthalate 120g, polybutylene terephthalate 50g, polypropylene 80g, isobutyl methacrylate 2g, polycarbonate 5g and Put 10 g of ethylene-vinyl acetate copolymer into a rheometer, melt and blend at 265 ° C, and cool to obtain modified PET;

[0038] Step 2. Preparation of modified PP: Take 200g of polypropylene, 15g of nano-titanium oxide, 13 parts of glass fiber, 40g of polyolefin elastomer, 60g of PP-g-MAH, 15g of polyacrylate, and 4g of ethylene-vinyl acetate copolymer and polyamide 15g, put it into an internal mixer and knead at 148°C, and the kneading time is 3min10s to obtain modified PP;

[0039] Step 3. Preparation of modified EVOH: Take 200g of EVOH, 150g of PP-g-MAH and 20g of polyacrylic acid, put them into an internal mixer for internal mixing, the temperature of internal mixer is 2...

Embodiment 2

[0042] A preparation method of a multilayer composite high polymer packaging material, comprising the steps of:

[0043] The 1st step, the preparation of modified PET: get polyethylene terephthalate 170g, polybutylene terephthalate 100g, polypropylene 150g, isobutyl methacrylate 8g, polycarbonate 15g and Put 30 g of ethylene-vinyl acetate copolymer into a rheometer, melt and blend at 265 ° C, and cool to obtain modified PET;

[0044] Step 2. Preparation of modified PP: Take 200g of polypropylene, 15g of nano-titanium oxide, 13 parts of glass fiber, 40g of polyolefin elastomer, 60g of PP-g-MAH, 15g of polyacrylate, and 4g of ethylene-vinyl acetate copolymer and polyamide 15g, put it into an internal mixer and knead at 148°C, and the kneading time is 3min10s to obtain modified PP;

[0045] Step 3. Preparation of modified EVOH: Take 400g of EVOH, 250g of PP-g-MAH and 50g of polyacrylic acid, put them into an internal mixer for internal mixing, the temperature of internal mixer i...

Embodiment 3

[0048] A preparation method of a multilayer composite high polymer packaging material, comprising the steps of:

[0049] The 1st step, the preparation of modified PET: get polyethylene terephthalate 140g, polybutylene terephthalate 70g, polypropylene 120g, isobutyl methacrylate 5g, polycarbonate 11g and Put 21g of ethylene-vinyl acetate copolymer into a rheometer, melt and blend at 265°C, and cool to obtain modified PET;

[0050] Step 2, preparation of modified PP: take 150g of polypropylene, 10g of nano-titanium oxide, 10g of glass fiber, 30g of polyolefin elastomer, 30g of PP-g-MAH, 10g of polyacrylate, 20g of ethylene-vinyl acetate copolymer and Put 10g of polyamide into an internal mixer and knead at 148°C for 3min10s to obtain modified PP;

[0051] Step 3. Preparation of modified EVOH: Take 320g of EVOH, 240g of PP-g-MAH and 30g of polyacrylic acid, put them into an internal mixer for internal mixing, the temperature of internal mixer is 210°C, and the internal mixing ti...

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Abstract

The invention discloses a preparing method of a multilayer composite high polymer packaging material, belonging to the technical field of packaging materials. The method comprises following steps: 1, preparing modified PET; 2, preparing modified PP; preparing modified EVOH; 4, placing the modified PET, modified PP and modified EVOH into an extruder, and co-extruding and shaping four layers of films according to a laminating sequence of the modified PET, modified PP and modified EVOH. The preparing method of the multilayer composite high polymer packaging material further improves a block property of the multilayer composite high polymer packaging material which has excellent gas and smell blocking properties, mechanical properties and tear resistance.

Description

technical field [0001] The invention discloses a preparation method of a multilayer composite high polymer packaging material, which belongs to the technical field of food packaging materials. Background technique [0002] Food packaging materials refer to paper, bamboo, wood, metal, enamel, ceramics, plastic, rubber, natural fiber, chemical fiber, glass and other products used for packaging and containing food or food additives, and coatings that directly contact food or food additives. [0003] For food packaging materials, non-toxicity is the most basic requirement. Due to direct contact with food materials, toxic materials will endanger human health. Barrier performance is also the main performance of food packaging materials. It prevents the external environment from affecting food materials. Barrier properties include oxygen barrier properties, moisture barrier properties, light barrier properties, and odor barrier properties. High temperature resistance and low tempe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L23/12C08L69/00C08L23/08C08L23/00C08L51/06C08L33/04C08L77/00C08L33/02C08K5/101C08K7/14C08K3/22B32B27/08B32B27/20B32B27/30B32B27/32B32B27/36B65D65/40B29C47/06
CPCB29C48/18B32B27/08B32B27/20B32B27/30B32B27/32B32B27/36B32B2250/03B32B2250/24B32B2305/30B32B2307/5825B32B2307/7248B32B2307/7265B32B2323/10B32B2439/70B65D65/40C08K2201/011C08L23/0861C08L23/12C08L67/02C08L2201/14C08L2205/025C08L2205/03C08L2205/035C08L69/00C08L23/0853C08K5/101C08L23/00C08L51/06C08L33/04C08L77/00C08K7/14C08K2003/2241C08L33/02
Inventor 付立洲
Owner DALIAN JUTONG PLASTIC PRODS
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