Preparation method of PET protective film with high toughness and impact resistance

An impact-resistant and protective film technology, applied in the field of preparation of high-toughness and impact-resistant PET protective film, can solve the problems of poor toughness, poor impact resistance, shortened product service life, limited application scope of PET protective film, etc. Wear resistance, low production cost, low haze effect

Inactive Publication Date: 2020-03-06
SUZHOU UNITE ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing PET protective film is mainly made by sticking together a layer of release film and a layer of PET original film. Possess basic performance, poor toughness and impact resistance, which limits the application range of PET protective film and shortens the service life of the product

Method used

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  • Preparation method of PET protective film with high toughness and impact resistance
  • Preparation method of PET protective film with high toughness and impact resistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The invention provides a technical solution: a preparation method of a high-toughness and impact-resistant PET protective film, comprising the following specific steps:

[0027] S1: Select raw materials: including PET substrate layer, polylactic acid composite layer and PET release layer, the PET substrate layer is composed of the following raw materials in parts by weight: 80 parts of PET particles, 2 parts of nano-zirconia, terminal 3 parts of hydroxyl hyperbranched polyester hydroxyl, 1 part of smooth degassing agent and 1 part of leveling agent; the polylactic acid composite layer is composed of the following raw materials in parts by weight: 40 parts of polylactic acid, 9 parts of toughened particles, plasticizer 4 parts of antioxidants and 3 parts of antioxidants.

[0028] S2: Preparation of the PET base material layer: The raw materials of the PET base material layer were mixed evenly in parts by weight, and extruded through an extruder. The extrusion temperature...

Embodiment 2

[0033] The invention provides a technical solution: a preparation method of a high-toughness and impact-resistant PET protective film, comprising the following specific steps:

[0034] S1: Select raw materials: including PET substrate layer, polylactic acid composite layer and PET release layer, the PET substrate layer is composed of the following raw materials in parts by weight: 85 parts of PET particles, 3.5 parts of nano-zirconia, terminal 5 parts of hydroxyl hyperbranched polyester hydroxyl, 1.5 parts of smooth degassing agent and 1.5 parts of leveling agent; the polylactic acid composite layer is composed of the following raw materials in parts by weight: 60 parts of polylactic acid, 27 parts of toughening particles, plasticizing 11 parts of antioxidants and 4 parts of antioxidants.

[0035] S2: Preparation of the PET base material layer: The raw materials of the PET base material layer were mixed evenly according to the weight part, and extruded through an extruder. The...

Embodiment 3

[0040] The invention provides a technical solution: a preparation method of a high-toughness and impact-resistant PET protective film, comprising the following specific steps:

[0041] S1: Select raw materials: including PET substrate layer, polylactic acid composite layer and PET release layer, the PET substrate layer is composed of the following raw materials in parts by weight: 90 parts of PET particles, 5 parts of nano-zirconia, terminal 7 parts of hydroxyl hyperbranched polyester hydroxyl, 2 parts of smooth degassing agent and 2 parts of leveling agent; the polylactic acid composite layer is composed of the following raw materials in parts by weight: 80 parts of polylactic acid, 45 parts of toughening particles, plasticizing 18 parts of antioxidants and 5 parts of antioxidants.

[0042]S2: Preparation of the PET base material layer: The raw materials of the PET base material layer were mixed evenly in parts by weight, and extruded through an extruder. The extrusion temper...

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Abstract

The invention discloses a preparation method of a PET protective film with high toughness and impact resistance. The preparation method includes the following specific steps: S1, raw materials are selected; S2, a PET base material layer is prepared; S3, a polylactic acid composite layer is prepared; S4, the polylactic acid composite layer is coated; and S5, a PET release layer is pasted. The PET base material layer combines nano-zirconium dioxide with hydroxy-terminated hyperbranched polyesters, high toughness and high wear resistance are achieved through the synergistic effect of the nano-zirconium dioxide and the hydroxy-terminated hyperbranched polyesters, by coating the upper surface and the lower surface of the PET base material layer with the polylactic acid composite layer, good toughness can be provided from the outer side to resist impact force of external objects, a process is simple, the production cost is low, the stability is good, and industrialization is achieved advantageously.

Description

technical field [0001] The invention relates to the technical field of protective films, in particular to a preparation method of a high-toughness and impact-resistant PET protective film. Background technique [0002] With the rapid development of IT and electronic industries and the development of many emerging high-tech application fields, the demand for PET protective films for electronic products is increasing. However, because the surface of electronic product components is very fragile and sensitive, there must be very strict requirements on the cleanliness, crystal point level, viscosity, and temperature resistance of the protective film covering it. In the production and use of many electronic products or touch screens, LCD screens, etc., in order to avoid possible damage during processing and handling, PET protective films must be used to provide comprehensive protection, and to avoid damage to the pasted objects by the protective film itself. pollute. [0003] I...

Claims

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Application Information

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IPC IPC(8): B29D7/01B29K67/00
CPCB29D7/01B29K2067/003B29K2067/046
Inventor 张峰
Owner SUZHOU UNITE ELECTRONICS
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