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High-transparency slippery PET sheet material and manufacture method thereof

A transparent and smooth technology, used in flat products, other household appliances, applications, etc., can solve the problems of low quality, easy aging, and poor smoothness of PET sheets, achieve good UV resistance, ensure high transparency, The effect of ensuring slippery performance

Inactive Publication Date: 2017-09-01
浙江中盛新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PET sheets are widely used, but the existing PET sheets generally have low transparency, poor smoothness, low UV resistance, and easy aging. The existing PET sheet manufacturing process cannot well control various The appearance of defects, resulting in a decrease in the quality of PET sheets

Method used

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  • High-transparency slippery PET sheet material and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A kind of manufacture method of highly transparent smooth PET sheet, comprises the steps:

[0036] Step 1, pre-crystallization, the PET crystallization temperature is set at 155°C, the hot air dew point is controlled at -40°C, the time is controlled at 80min, and the pre-crystallization temperature is 10°C lower than the drying temperature;

[0037] Step 2, drying, PET is dried with a dehumidifying dryer, the air is heated to 165°C, the time is controlled at 5hr, the dew point of the hot air of the dehumidifying dryer is controlled at -45°C, and the moisture content after drying must be lower than 0.003% (30ppm). The air flow after drying is maintained at 3m 3 / kg·hr;

[0038] Step 3, extruding from the extruder, mixing the raw materials evenly according to the proportion, a kind of highly transparent and smooth PET sheet, its raw material components are calculated in weight percentage: 0.5% of transparent additive, 3% of smooth masterbatch, anti- 0.9% of ultraviolet ...

Embodiment 2

[0046] A kind of manufacture method of highly transparent smooth PET sheet, comprises the steps:

[0047] Step 1. Pre-crystallization, the PET crystallization temperature is set at 145°C, the hot air dew point is controlled at -45°C, the time is controlled at 40min, and the pre-crystallization temperature is 10°C lower than the drying temperature;

[0048] Step 2, drying, PET is dried with a dehumidification dryer, the air is heated to 155°C, the time is controlled at 7hr, the dew point of the hot air of the dehumidification dryer is controlled at -40°C, and the moisture content after drying must be lower than 0.003% (30ppm). The air flow rate after drying is maintained at 3.7m 3 / kg·hr;

[0049] Step 3: extruding from the extruder, mixing the raw materials evenly according to the proportion, a kind of highly transparent and smooth PET sheet, its raw material components are calculated in weight percentage: 0.2% of transparent additive, 1% of smooth masterbatch, anti- 0.5% of...

Embodiment 3

[0057] A kind of manufacture method of highly transparent smooth PET sheet, comprises the steps:

[0058] Step 1. Pre-crystallization. The PET crystallization temperature is set at 150°C, the hot air dew point is controlled at -43°C, the time is controlled at 60 minutes, and the pre-crystallization temperature is 5°C lower than the drying temperature;

[0059] Step 2, drying, PET is dried with a dehumidification dryer, the air is heated to 160°C, the time is controlled at 6hr, the dew point of the hot air in the dehumidification dryer is controlled at -43°C, and the moisture content after drying must be lower than 0.003% (30ppm). The air flow after drying is maintained at 3.5m 3 / kg·hr;

[0060] Step 3: extruding from the extruder, mixing the raw materials evenly according to the proportion, a kind of highly transparent and smooth PET sheet, its raw material components are calculated in weight percentage: 0.3% of transparent additive, 2% of smooth masterbatch, anti-corrosion ...

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Abstract

The invention discloses a high-transparency slippery PET sheet material, raw materials of which comprise the following ingredients (by weight): 0.2-0.5% of a transparencizing agent, 1-3% of slippery master batch, 0.5-0.9% of an anti-ultraviolet auxiliary agent, 1-2% of a dispersing aid, and the rest of noncrystalline PET or modified PET. By the adoption of a new material ratio and through addition of the transparencizing agent, the PET sheet material is endowed with high transparency. By addition of slippery particles, the PET sheet material is endowed with good slipperiness and has good strength and toughness and smooth and flat surface. As the anti-ultraviolet auxiliary agent which will not influence the transparency is also added, the PET sheet material is endowed with good anti-ultraviolet performance. The materials used are all nontoxic auxiliary materials. Thus, the PET sheet material belongs to a green and environmental product. The invention discloses a manufacture method of the high-transparency slippery PET sheet material. By accurately controlling key parameter in each step, high transparency and slipperiness of the sheet material can be guaranteed, and various defects are avoided.

Description

technical field [0001] The invention belongs to the technical field of new materials, in particular to a highly transparent and smooth PET sheet and a manufacturing method thereof. Background technique [0002] The chemical formula of polyethylene terephthalate is -OCH2-CH2OCOC6H4CO- English name: polyethylene terephthalate, PET for short, is a high polymer, which is derived from the dehydration condensation reaction of polyethylene terephthalate. Ethylene terephthalate is obtained from the esterification of terephthalic acid and ethylene glycol. PET sheets are widely used, but the existing PET sheets generally have low transparency, poor smoothness, low UV resistance, and easy aging. The existing PET sheet manufacturing process cannot well control various The appearance of defects reduces the quality of PET sheets. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a highly transparent and smooth PET sheet and it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L93/04C08L23/06C08L23/30C08K5/12B29C47/92B29C47/08B29B13/06B29L7/00B29C48/92
CPCB29B13/06B29C48/002B29C48/07B29C48/92B29C2948/92704B29C2948/92857C08L67/02C08L2201/10C08L2205/03C08L93/04C08L23/06C08K5/12C08L23/30
Inventor 叶文进叶侃看羊荣妙周旭英
Owner 浙江中盛新材料股份有限公司
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