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PET sheet for express packaging

A sheet and packaging technology, applied in the field of PET sheet, can solve the problems of difficulty in exerting practical effects, difficulty in implementation, and high cost of promotion, and achieve the effects of rich colors, gorgeous appearance and good pressure resistance.

Inactive Publication Date: 2019-09-27
HEBEI JINDA PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the "shared express box" has been launched on the market, and recyclable packaging boxes are used instead of cartons at the end of the delivery process; Recycling is cumbersome to use, difficult to implement, high in promotion costs, and difficult to achieve actual results

Method used

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  • PET sheet for express packaging
  • PET sheet for express packaging
  • PET sheet for express packaging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The invention provides a PET plate for express packaging, which comprises the following components in parts by weight: polyethylene terephthalate 1000KG, polyester toughening agent 5KG, and polyester tackifier 2KG.

[0021] Specifically, the polyethylene terephthalate is obtained by transesterifying dimethyl terephthalate and ethylene glycol, and then undergoing polycondensation reaction. It belongs to crystalline saturated polyester and is milky white or light yellow, Highly crystalline polymer with a smooth and shiny surface.

[0022] Specifically, the polyester toughening agent is a vinyl elastomer bifunctionalized with acrylate and glycidyl ester.

[0023] Specifically, the polyester tackifier is one or more types of polyurethane.

[0024] Specifically, the specific implementation steps of the plate processing are:

[0025] S1, feed according to the ratio of the above raw and auxiliary materials, mix through a mixer, crystallize and dry, the crystallization drying...

Embodiment 2

[0034] The invention provides a PET plate for express packaging, which comprises the following components in parts by weight: polyethylene terephthalate 1000KG, polyester toughening agent 6KG, and polyester tackifier 2KG.

[0035] Specifically, the polyethylene terephthalate is obtained by transesterifying dimethyl terephthalate and ethylene glycol, and then undergoing polycondensation reaction. It belongs to crystalline saturated polyester and is milky white or light yellow, Highly crystalline polymer with a smooth and shiny surface.

[0036] Specifically, the polyester toughening agent is a vinyl elastomer bifunctionalized with acrylate and glycidyl ester.

[0037] Specifically, the polyester tackifier is one or more types of polyurethane.

[0038] Specifically, the specific implementation steps of the plate processing are:

[0039] S1, feed according to the ratio of the above raw and auxiliary materials, mix through a mixer, crystallize and dry, the crystallization drying...

Embodiment 3

[0048] The invention provides a PET plate for express packaging, which comprises the following components in parts by weight: polyethylene terephthalate 1000KG, polyester toughening agent 5KG, and polyester tackifier 3KG.

[0049] Specifically, the polyethylene terephthalate is obtained by transesterifying dimethyl terephthalate and ethylene glycol, and then undergoing polycondensation reaction. It belongs to crystalline saturated polyester and is milky white or light yellow, Highly crystalline polymer with a smooth and shiny surface.

[0050] Specifically, the polyester toughening agent is a vinyl elastomer bifunctionalized with acrylate and glycidyl ester.

[0051] Specifically, the polyester tackifier is one or more types of polyurethane.

[0052] Specifically, the specific implementation steps of the plate processing are:

[0053] S1, feed according to the ratio of the above raw and auxiliary materials, mix through a mixer, crystallize and dry, the crystallization drying...

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Abstract

The invention discloses a PET sheet for express packaging. The PET sheet includes the following ingredients (by weight): 1000KG of polyethylene terephthalate, 5KG of a polyester toughening agent, and 2KG of a polyester tackifier. The polyethylene terephthalate is prepared by the following steps: exchanging dimethyl terephthalate with ethylene glycol, followed by polycondensation. The polyester toughening agent is acrylate and glycidyl ester bifunctionalized vinyl elastomer. The polyester tackifier is one or more of polyurethane. The PET sheet used for express packaging replaces carton packaging currently used for express delivery. The PET sheet is directly processed into a box for containing express items as an express box. Meanwhile, the express box needn't be recovered by the courier, but can be directly folded and stored by the user for use in the next time of mailing or directly recovered by the plastics manufacturer to be reworked.

Description

technical field [0001] The invention belongs to the technical field of plastic packaging, and in particular relates to a PET plate used for express packaging. Background technique [0002] Polyethylene terephthalate (PET) material has many advantages, such as high resistance to CO2, O2 and water vapor penetration, high strength, impact resistance, high chemical resistance, good transparency and gloss, and excellent appearance. Good, etc. Compared with other plastic varieties, PET has better stiffness and higher pressure resistance. And PET is known as the king of environmental protection in plastics, which can be fully recycled. [0003] At present, the packaging cartons, foams, and tapes generated by express delivery in my country are astonishing, basically non-degradable, and difficult to recycle. According to statistics, 99% of express packages will become garbage, either incinerated or landfilled. [0004] At present, the "shared express box" has been launched on the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L75/04
CPCC08L67/02C08L2205/03C08L75/04
Inventor 李志辉张民王磊孙仲恒许聪聪
Owner HEBEI JINDA PLASTIC