PET瓶胚專用干燥機，PET瓶胚結晶機，PET瓶胚干燥機PET 瓶胚專用干燥機 中英文雙語同步介紹
PET 瓶胚專用干燥機是專為 PET 瓶胚注塑工藝研發(fā)的聚酯切片深度干燥專用設備，以預結晶 + 低露點除濕干燥為核心，精準適配瓶胚注塑對原料含水率、結晶度的嚴苛要求，是瓶胚量產的核心前道工藝設備。
PET preform special dryer is a special equipment for deep drying of polyester chips developed exclusively for the PET preform injection moulding process, with pre-crystallization + low dew point dehumidification drying as the core, accurately adapting to the stringent requirements of preform injection moulding for raw material moisture content and crystallinity, and is the core front-end process equipment for mass preform production.
該設備針對 PET 瓶胚注塑（含普通飲料瓶、熱灌裝瓶、醫(yī)藥食品級瓶胚）的工藝特性專項設計，可將 PET 切片含水率穩(wěn)定降至 **≤20ppm**，結晶度精準控制在25%~35%，全程密閉防二次吸濕，且能與瓶胚注塑機聯(lián)動供料，完全匹配 48~320 腔高腔數模具的高速注塑節(jié)拍。
Designed specifically for the process characteristics of PET preform injection moulding (including ordinary beverage bottles, hot-fill bottles, pharmaceutical and food-grade preforms), the equipment can stably reduce the moisture content of PET chips to ≤20ppm, accurately control the crystallinity at 25%~35%, prevent secondary moisture absorption with full-process airtightness, and can realize linked feeding with preform injection moulding machines, fully matching the high-speed injection cycle of high-cavity moulds from 48 to 320 cavities.
設備區(qū)別于常規(guī) PET 干燥機，具備露點更穩(wěn)定、控溫更精準、密閉性更強、注塑聯(lián)動性優(yōu)等特點，適配食品、飲料、醫(yī)藥日化等行業(yè)的 PET 瓶胚規(guī)模化生產，是保障瓶胚無氣泡、無發(fā)白、力學性能達標的關鍵設備。
Different from conventional PET dryers, the equipment has the characteristics of more stable dew point, more precise temperature control, stronger airtightness and excellent injection interconnection performance, adapted to the large-scale production of PET preforms in food, beverage, pharmaceutical and daily chemical industries, and is a key equipment to ensure that preforms are free of bubbles and whitening and meet mechanical performance standards.
一、設備應用核心必要性
PET 為強吸濕性高分子材料，常溫下易吸附空氣中的水汽，而瓶胚注塑為高溫高壓工藝（料筒溫度 270~290℃），切片含水率超標會直接導致生產失效。
PET is a highly hygroscopic polymer material that easily absorbs water vapor in the air at room temperature, while preform injection moulding is a high-temperature and high-pressure process (barrel temperature 270~290℃), and excessive moisture content of chips will directly lead to production failure.
If the moisture content of PET chips exceeds 20ppm, severe hydrolysis will occur during high-temperature injection moulding, leading to bubbles, whitening, foggy spots and shrinkage marks on the preform surface.
若 PET 切片含水率＞20ppm，高溫注塑時會發(fā)生劇烈水解，導致瓶胚表面出現(xiàn)氣泡、發(fā)白、霧斑、縮痕等缺陷，力學性能大幅下降，后續(xù)吹瓶易破裂、壁厚不均，廢品率可達 3%~5%。
If the moisture content of PET chips exceeds 20ppm, severe hydrolysis will occur during high-temperature injection moulding, leading to defects such as bubbles, whitening, foggy spots and shrinkage marks on the preform surface, a sharp drop in mechanical properties, and easy cracking and uneven wall thickness in subsequent bottle blowing, with a scrap rate of up to 3%~5%.
瓶胚注塑多為高腔數、高射速連續(xù)生產，單模周期僅 3~5s，對原料供應的連續(xù)性、均勻性要求極高，常規(guī) PET 干燥機存在露點波動大、易二次吸濕、供料不同步等問題，無法適配瓶胚注塑工藝。
Preform injection moulding is mostly continuous production with high cavity number and high injection speed, with a single mould cycle of only 3~5s, which has extremely high requirements for the continuity and uniformity of raw material supply. Conventional PET dryers have problems such as large dew point fluctuations, easy secondary moisture absorption and asynchronous feeding, which cannot adapt to the preform injection moulding process.
PET 瓶胚專用干燥機通過定型預結晶 + 深度低露點干燥 + 全程密閉輸送，從根源上解決 PET 水解問題，同時實現(xiàn)與注塑機的精準聯(lián)動，保證原料連續(xù)穩(wěn)定供應，將瓶胚廢品率降至 0.5% 以下，是瓶胚規(guī)模化生產的必備設備。
Through shaping pre-crystallization + deep low dew point drying + full-process airtight conveying, the PET preform special dryer fundamentally solves the problem of PET hydrolysis, and at the same time realizes precise interconnection with the injection moulding machine to ensure continuous and stable supply of raw materials, reducing the preform scrap rate to below 0.5%, and is an essential equipment for large-scale preform production.
不同等級瓶胚對干燥品質要求逐級提升，醫(yī)藥 / 食品級瓶胚需將切片含水率降至≤10ppm，僅有專用干燥機可實現(xiàn)該工藝要求，滿足 FDA、GMP 等國際認證標準。
The requirements for drying quality of different grades of preforms increase step by step. Pharmaceutical/food-grade preforms need to reduce the chip moisture content to ≤10ppm, and only special dryers can meet this process requirement and comply with international certification standards such as FDA and GMP.