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APET (amorphous polyethylene terephthalate) composite sheet material and preparation method thereof and packaging sheet material

A composite sheet and packaging sheet technology, applied in the field of packaging materials, can solve the problems of prolonging the shelf life, accelerating the deterioration of materials, increasing the production cost and manufacturing cost, etc., and achieving the effect of prolonging the shelf life, preventing oxidation failure and low production cost.

Active Publication Date: 2017-12-19
FOSHAN NANHAI LIDA PACKAGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the packaging bag made of APET composite sheet does not have the effect of extending the shelf life. When the material is packaged, a part of oxygen often enters the packaging bag, which makes the material react with the oxygen in the bag to accelerate the deterioration of the material. Vacuumizing the bag will increase the production cost and manufacturing cost, so it is necessary to develop a low-cost APET composite sheet that can absorb oxygen

Method used

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  • APET (amorphous polyethylene terephthalate) composite sheet material and preparation method thereof and packaging sheet material
  • APET (amorphous polyethylene terephthalate) composite sheet material and preparation method thereof and packaging sheet material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The composition of the oxygen absorber is: 0.5-5% of iron powder, 5-15% of ethylene / vinyl alcohol copolymer, 10-20% of polyethylene, 65-80% of APET masterbatch; the polyethylene is low-density polyethylene.

[0027] 1) Place 137KG APET slices in a crystallization tower, crystallize at 165°C for 270 minutes, and then dry the crystallized APET slices at 170°C for 5 hours to obtain dried APET slices;

[0028] 2) Fully mix the components of 1.8KG oxygen absorber, and then dry the uniformly mixed oxygen absorber, 20KG copolyester and 16KG PVDC at 175°C for 5.5h;

[0029] 3) Feed the dried APET slices to the main discharge channel of the discharge device; at the same time, the dried oxygen absorber is deoxidized in the secondary discharge channel, and the oxygen absorber is transported to the middle of the main discharge channel, and then The APET composite sheet was obtained by hot pressing and melting.

Embodiment 2

[0031] The composition of the oxygen absorber is: 0.5-5% of iron powder, 5-15% of ethylene / vinyl alcohol copolymer, 10-20% of polyethylene, 65-80% of APET masterbatch; the polyethylene is low-density polyethylene.

[0032] 1) Place 137KG APET slices in a crystallization tower, crystallize at 165°C for 270 minutes, and then dry the crystallized APET slices at 170°C for 5 hours to obtain dried APET slices;

[0033] 2) Fully mix the components of 3.6KG oxygen absorbent, and then dry the uniformly mixed oxygen absorbent, 20KG copolyester and 16KG PVDC at 175°C for 5.5h;

[0034] 3) Mix the dried APET slices, dried copolyester and dried PVDC evenly, and discharge to the main discharge channel of the discharge device; at the same time, the dried oxygen absorber is deoxidized in the secondary discharge channel , and transport the oxygen absorber to the middle of the main discharge channel, and then hot press and melt to obtain the APET composite sheet.

Embodiment 3

[0036] The composition of the oxygen absorber is: 0.5-5% of iron powder, 5-15% of ethylene / vinyl alcohol copolymer, 10-20% of polyethylene, 65-80% of APET masterbatch; the polyethylene is low-density polyethylene.

[0037] 1) Place 137KG APET slices in a crystallization tower, crystallize at 165°C for 270 minutes, and then dry the crystallized APET slices at 170°C for 5 hours to obtain dried APET slices;

[0038] 2) Fully mix the components of 5.5KG oxygen absorber, and then dry the mixed oxygen absorber, 20KG copolyester and 16KG PVDC at 175°C for 5.5h;

[0039] 3) Mix the dried APET slices, dried copolyester and dried PVDC evenly, and discharge to the main discharge channel of the discharge device; at the same time, the dried oxygen absorber is deoxidized in the secondary discharge channel , and transport the oxygen absorber to the middle of the main discharge channel, and then hot press and melt to obtain the APET composite sheet.

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Abstract

The invention provides an APET (amorphous polyethylene terephthalate) composite sheet material. The APET composite sheet material comprises the following components in parts by weight: 137-168 parts of APET slice resin and 1-11 parts of an oxygen absorbent. The invention further discloses a preparation method of the APET composite sheet material and a packaging sheet material using the APET composite sheet material. The APET composite sheet material is prepared from the oxygen absorbent and the APET slice resin, and has a high oxygen isolating property; a packaging bag made of the composite sheet material can effectively isolate oxygen from the interior of the packaging bag; besides, the APET composite sheet material has an oxygen absorbing function, so that the packaging bag made of the composite sheet material can absorb oxygen in the bag body, and thus the shelf life of food in the bag body is effectively prolonged; and in addition, the APET composite sheet material also has a good impact-resistant effect and high blister packaging heat sealing performance.

Description

technical field [0001] The invention belongs to the technical field of packaging materials, in particular to an APET composite sheet, a preparation method thereof, and a packaging sheet Background technique [0002] Composite sheet is a solid material with polymer as the basic component, which is formed by monomer or additives at a certain temperature and pressure, or cross-linked and solidified. It is widely used in convenience foods, beverages, Packaging of electronic appliances, metal products, etc., as well as lighting, advertising, decoration and other industries. [0003] APET composite sheet is a kind of plastic-absorbing material. Its chemical name is: non-crystalline polyethylene terephthalate composite sheet. It is a thermoplastic environmental protection plastic product. Its side materials and waste materials can be recycled, and it is also degradable Plastic, which is widely used in food, medical, packaging and other fields, and domestically has relatively matur...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L23/08C08L23/06C08L67/00C08L27/08C08K3/08C09J7/02C09J123/08
CPCC08K2003/0856C08L67/02C08L2201/14C08L2205/025C08L2205/035C08L2207/066C09J123/0853C09J2301/122C09J2301/41C09J2467/006C08L23/0861C08L23/06C08L67/00C08L27/08C08K3/08
Inventor 张逢辉
Owner FOSHAN NANHAI LIDA PACKAGING
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